Dedusting and purifying device and printing equipment

Abstract

The utility model belongs to the technical field of printing equipment, and discloses a dust removal and purification device and printing equipment. The dedusting and purifying device comprises a dust hood, a waste gas collecting chamber and a dust collecting box, wherein one end of the dust hood is communicated with a waste gas source; the waste gas collecting chamber is communicated with the other end of the dust hood, the waste gas collecting chamber is provided with a containing cavity, a purification assembly and a negative pressure fan are sequentially arranged in the containing cavity from bottom to top, the purification assembly is used for filtering and treating dust and harmful gas in waste gas, and the negative pressure fan is used for driving the waste gas to move from bottom to top; the dust collection box is arranged in the containing cavity and located below the purification assembly. The dust removal and purification device can filter and purify dust particles and harmful gas in waste gas, the purification efficiency of first settling and then filtering is higher, and it is guaranteed that discharged gas cannot cause damage to the human body.

Description

Technical Field

[0001] The utility model relates to the technical field of printing equipment, in particular to a dust removal and purification device and printing equipment. Background Art

[0002] Printers are currently an important office equipment. They are responsible for outputting digital documents to physical paper. Almost all enterprises and institutions cannot do without the help of printers. It can be said that as long as there are paper documents such as contracts, invoices, and bidding plans, printers are a must-have in the office.

[0003] However, due to the different working methods of various types of printers, they produce different types of pollutants. For example, laser printers often use the toner + toner imaging method. The printer will charge the photosensitive drum through the corona wire, thereby generating ozone. In addition, during the toner printing process, the toner will be discharged into the air during the process of the photosensitive drum absorbing the toner, the thermal transfer unit heating and fixing, and the photosensitive drum removing the toner. The toner particles are extremely small and have great harm to the human respiratory tract.

[0004] Therefore, there is an urgent need to provide a new dust removal and purification device and printing equipment to solve the above-mentioned technical problems in the prior art. Utility Model Content

[0005] The utility model aims to provide a dust removal and purification device, which can filter and purify dust particles and harmful gases in exhaust gas with higher filtering efficiency, and ensure that the discharged gas will not cause harm to the human body.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The dust removal and purification device includes a dust hood, an exhaust gas collection chamber and a dust box. One end of the dust hood is used to connect to the exhaust gas source; the exhaust gas collection chamber is connected to the other end of the dust hood, and the exhaust gas collection chamber is provided with a accommodating cavity. A purification component and a negative pressure fan are sequentially arranged in the accommodating cavity from bottom to top. The purification component is used to filter and process dust and harmful gases in the exhaust gas, and the negative pressure fan is used to drive the exhaust gas to move from bottom to top; the dust box is arranged in the accommodating cavity and is located below the purification component.

[0008] Optionally, a partition is provided in the above-mentioned waste gas collection chamber, and the above-mentioned partition divides the above-mentioned accommodating chamber into an air inlet chamber and a processing chamber. The above-mentioned air inlet chamber is connected to the above-mentioned dust hood, and the above-mentioned purification component and the above-mentioned negative pressure fan are arranged in the above-mentioned processing chamber; at least part of the above-mentioned air inlet chamber is arranged below the above-mentioned processing chamber, and the above-mentioned dust collection box is arranged in the above-mentioned air inlet chamber.

[0009] Optionally, the inner wall of the exhaust gas collection chamber, the partition plate and the bottom wall of the purification component are jointly arranged to form the air intake cavity, so that the longitudinal section of the air intake cavity is L-shaped.

[0010] Optionally, a flame arrester is provided at the connection between the air inlet cavity and the dust hood.

[0011] Optionally, an air inlet net is provided at the connection between the air inlet cavity and the dust hood, and the air inlet net is provided with a plurality of through holes.

[0012] Optionally, the purification component includes a filter and a purifier which are sequentially arranged along the flow direction of the exhaust gas, the filter is used to filter dust and absorb harmful gases, and the purifier is used to purify the filtered exhaust gas.

[0013] Optionally, the filter comprises a pre-filter layer, a main filter layer and a gas filter layer which are sequentially arranged along the flow direction of the exhaust gas, and the inner diameter of the filter pores of the main filter layer is smaller than the inner diameter of the filter pores of the pre-filter layer.

[0014] Optionally, the negative pressure fan is electrically connected to a controller, and the controller is used to adjust the operating capacity of the negative pressure fan. The wind pressure range of the negative pressure fan is 1745Pa to 2094Pa.

[0015] Optionally, the controller is also electrically connected to the purification component, and the controller is used to monitor the operating status of the purification component.

[0016] Another object of the present invention is to provide a printing device, which includes the dust removal and purification device as described in any of the above schemes.

[0017] Beneficial effects:

[0018] The dust removal and purification device uses a dust hood to introduce waste gas from the waste gas source and discharge the waste gas to the waste gas collection chamber. The negative pressure fan in the waste gas collection chamber drives the waste gas to move from bottom to top and pass through the purification component and the negative pressure fan in turn. During the movement of the waste gas, due to the gravity of the drive box of the negative pressure fan, the larger dust particles first settle and fall into the dust collection box below the purification component under the action of gravity, and then the waste gas moves upward through the purification component. Other dust and harmful gases in the waste gas are filtered and adsorbed by the purification component to achieve dust removal and purification of the waste gas. The dust removal and purification device can filter and purify dust particles and harmful gases in the waste gas. The purification efficiency of settling first and then filtering is higher, ensuring that the discharged gas will not cause damage to the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an axonometric diagram of a dust removal and purification device provided in a specific embodiment of the utility model;

[0020] Figure 2 It is a top view of the dust removal and purification device provided in a specific embodiment of the utility model;

[0021] Figure 3 It is a side view of the dust removal and purification device provided by the specific embodiment of the utility model;

[0022] Figure 4 It is a partial cross-sectional view of a dust removal and purification device provided in a specific embodiment of the utility model.

[0023] In the figure:

[0024] 100. Dust hood;

[0025] 200, exhaust gas collection chamber; 201, maintenance cover; 202, filter compartment door; 203, air outlet; 204, casters; 205, controller; 206, alarm; 210, partition; 211, air inlet chamber; 212, processing chamber; 220, air inlet net; 221, through hole;

[0026] 311, pre-filter layer; 312, main filter layer; 313, gas filter layer; 320, purifier; 330, negative pressure fan;

[0027] 400. Dust box. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0032] Please refer to Figure 1 and Figure 2 The dust removal and purification device in this embodiment includes a dust hood 100 and an exhaust gas collecting chamber 200. The dust hood 100 is used to communicate with an external exhaust gas source. Specifically in this embodiment, the exhaust gas source refers to the exhaust gas outlet generated during the printing process of the printer. The exhaust gas passes through the exhaust gas collecting chamber 200. After filtering and purification, harmful particles and harmful gases such as toner and ozone are adsorbed by the exhaust gas collecting chamber 200, and the purified gas is then discharged from the outlet at the top of the exhaust gas collecting chamber 200.

[0033] Furthermore, a maintenance cover 201 is provided on the top of the exhaust gas collecting chamber 200. By opening the maintenance cover 201, the components in the exhaust gas collecting chamber 200 can be inspected and maintained, thereby ensuring the reliable operation of the dust removal and purification device.

[0034] At the same time, a filter door 202 is also provided on the side wall of the waste gas collection chamber 200. By opening the filter door 202, only the components in the waste gas collection chamber 200 can be replaced, thereby ensuring the continuous and reliable operation of the dust removal and purification device.

[0035] Please continue to refer to Figure 3In this embodiment, an air inlet net 220 is provided at the connection between the waste gas collection chamber 200 and the dust hood 100, and the air inlet net 220 is provided with a plurality of through holes 221. By providing the air inlet net 220 with through holes 221 between the waste gas collection chamber 200 and the dust hood 100, the waste in the dust hood 100 can be initially filtered, and larger objects such as paper fragments, leaves, stones, etc. can be filtered, so as not to affect the subsequent filtering effect. Specifically, Figure 4 The above-mentioned air intake net is provided at the connection between the air intake cavity 211 of the middle exhaust gas collection chamber 200 and the dust collection hood 100, which will not be described in detail here.

[0036] Combine the following Figure 4 The dust removal and purification device is introduced in detail, and the dust removal and purification device includes a dust hood 100, an exhaust gas collecting chamber 200 and a dust box 400. One end of the dust hood 100 is used to connect to the exhaust gas source; the exhaust gas collecting chamber 200 is connected to the other end of the dust hood 100, and the exhaust gas collecting chamber 200 is provided with a accommodating cavity, and a purification component and a negative pressure fan 330 are arranged in the accommodating cavity from bottom to top. The purification component is used to filter and treat dust and harmful gases in the exhaust gas, and the negative pressure fan 330 is used to drive the exhaust gas to move from bottom to top; the dust box 400 is arranged in the accommodating cavity and is located below the purification component.

[0037] The dust removal and purification device uses a dust hood 100 to introduce waste gas from the waste gas source, and discharges the waste gas to the waste gas collection chamber 200. The negative pressure fan 330 in the waste gas collection chamber 200 drives the waste gas to move from bottom to top, and passes through the purification component and the negative pressure fan 330 in turn. During the movement of the waste gas, due to the gravity of the drive box of the negative pressure fan 330, the larger dust particles first settle and fall into the dust box 400 below the purification component under the action of gravity, and then the waste gas moves upward through the purification component. Other dust and harmful gases in the waste gas are filtered and adsorbed by the purification component to achieve dust removal and purification of the waste gas. The dust removal and purification device can filter and purify dust particles and harmful gases in the waste gas. The purification efficiency of settling first and then filtering is higher, ensuring that the discharged gas will not cause damage to the human body.

[0038] Furthermore, a partition 210 is provided in the waste gas collection chamber 200. The partition 210 divides the accommodating chamber into an air inlet chamber 211 and a processing chamber 212. The air inlet chamber 211 is connected to the dust hood 100. The purification component and the negative pressure fan 330 are provided in the processing chamber 212. At least part of the air inlet chamber 211 is provided below the processing chamber 212. The dust box 400 is provided in the air inlet chamber 211. By providing the partition 210, the accommodating chamber can be divided into the air inlet chamber 211 and the processing chamber 212, so that before the waste gas enters the processing chamber 212, it flows along a longer path in the air inlet chamber 211, so that large particles in the waste gas are as much as possible settled in the dust box 400 under the action of gravity, thereby improving the subsequent filtering efficiency, avoiding clogging of the purification component, and improving the service life of the purification component.

[0039] In this embodiment, the inner wall of the waste gas collection chamber 200, the partition plate 210 and the bottom wall of the purification assembly are collectively arranged to form the air inlet cavity 211, so that the longitudinal section of the air inlet cavity 211 is L-shaped. Thus, the length of the flow path of the waste gas in the air inlet cavity 211 can be extended, so that the flow path of the airflow in the waste collection chamber is U-shaped, and the dust box 400 is arranged at the bottom of the L-shaped air inlet cavity 211, so that large particles in the waste gas are fully settled in the dust box 400.

[0040] Optionally, a flame arrester is provided at the connection between the air inlet cavity 211 and the dust hood 100. The flame arrester is used to extinguish sparks in the exhaust gas, so as to prevent the sparks in the exhaust gas from damaging the downstream purification components, thereby increasing the service life of the dust removal and purification device.

[0041] Please continue to refer to Figure 4 The purification assembly includes a filter and a purifier 320 arranged in sequence along the flow direction of the exhaust gas. The filter is used to filter dust and absorb harmful gases, and the purifier 320 is used to purify the filtered exhaust gas. The filter and the purifier 320 are used to filter and purify the dust and harmful gases respectively, which can improve the filtering and purification efficiency. At the same time, since the filter is easy to wear, the filter can also be replaced separately to reduce maintenance costs.

[0042] Optionally, the filter includes a pre-filter layer 311, a main filter layer 312 and a gas filter layer 313 arranged in sequence along the flow direction of the exhaust gas, and the inner diameter of the filter hole of the main filter layer 312 is smaller than the inner diameter of the filter hole of the pre-filter layer 311. It can be imagined that the pre-filter layer 311 is used to filter larger particles, the main filter layer 312 is used to filter smaller dust particles, and the gas filter layer 313 is used to adsorb harmful gases in the exhaust gas. Of course, more than 3 filter layers such as 4 layers, 5 layers or even 6 layers can also be set, and the inner diameter of the filter hole of the filter layer decreases layer by layer, gradually improving the filtering capacity, thereby improving the filtering effect of the filter.

[0043] Furthermore, the main filter layer 312 is composed of a HEPA high-efficiency filter element, and the filtration efficiency of particles of 0.3-0.5 microns is 99.99%; the gas filter layer is composed of a chemical filter element, which can effectively remove harmful gases such as ozone in the air.

[0044] A purifier 320 is also provided above the filter to further purify the gas filtered by the filter to ensure that the discharged gas meets the standard. The purifier 320 may be an activated carbon filter. Figure 1 and Figure 2 The air outlet 203 of the exhaust gas collecting chamber 200 will not be described in detail here.

[0045] Specifically, the negative pressure fan 330 is electrically connected to the controller 205, and the controller 205 is used to adjust the operating capacity of the negative pressure fan 330. The wind pressure range of the negative pressure fan 330 is 1745Pa to 2094Pa. The type and model of the negative pressure fan 330 are not specifically limited. The controller 205 adopts PWM (Pulse Width Modulation) speed regulation, which can realize continuous and accurate adjustment of the air volume according to the amount of smoke and dust generated, and is suitable for wind pressure and air volume under different requirements.

[0046] In this embodiment, the controller 205 is also electrically connected to the purification component, and the controller 205 is used to monitor the operating status of the purification component. The controller 205 is electrically connected to the alarm 206. After the controller 205 detects that the filter is clogged, the alarm 206 can issue an alarm to prompt the operator to replace the filter element in time.

[0047] It should be noted that casters 204 are also provided at the bottom of the exhaust gas collection chamber 200, so that the dust removal and purification device can be easily moved, thereby disassembling and maintaining the dust removal and purification device.

[0048] This embodiment also provides a printing device, which includes a dust removal and purification device as described in any of the above schemes. The dust removal and purification device can be connected to the printing device, and directly inhale harmful particles and harmful gases such as carbon powder and ozone in the exhaust gas through the dust hood 100, so that the exhaust gas is not directly discharged into the air, and can filter and purify dust particles and harmful gases in the exhaust gas. The purification efficiency of settling first and then filtering is higher, ensuring that the discharged gas will not cause damage to the human body.

[0049] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A dust removal and purification device, characterized in that: include: A dust hood (100), one end of the dust hood (100) being connected to an exhaust gas source; An exhaust gas collection chamber (200), the exhaust gas collection chamber (200) being connected to the other end of the dust hood (100), the exhaust gas collection chamber (200) being provided with a receiving chamber, the receiving chamber being provided with a purification component and a negative pressure fan (330) in sequence from bottom to top, the purification component being used to filter and process dust and harmful gases in the exhaust gas, and the negative pressure fan (330) being used to drive the exhaust gas to move from bottom to top; A dust collecting box (400), wherein the dust collecting box (400) is arranged in the accommodating cavity and is located below the purification component.

2. The dust removal and purification device according to claim 1, characterized in that: A partition (210) is arranged in the waste gas collection chamber (200), and the partition (210) divides the accommodating chamber into an air intake chamber (211) and a processing chamber (212); the air intake chamber (211) is connected to the dust hood (100), and the purification component and the negative pressure fan (330) are arranged in the processing chamber (212); at least a part of the air intake chamber (211) is arranged below the processing chamber (212), and the dust collection box (400) is arranged in the air intake chamber (211).

3. The dust removal and purification device according to claim 2, characterized in that: The inner wall of the waste gas collection chamber (200), the partition plate (210) and the bottom wall of the purification component are jointly arranged to form the air intake cavity (211), so that the longitudinal section of the air intake cavity (211) is L-shaped.

4. The dust removal and purification device according to claim 2, characterized in that: A flame arrester is provided at the connection between the air inlet cavity (211) and the dust collection hood (100).

5. The dust removal and purification device according to claim 2, characterized in that: An air inlet net (220) is provided at the connection between the air inlet cavity (211) and the dust hood (100), and the air inlet net (220) is provided with a plurality of through holes (221).

6. The dust removal and purification device according to claim 1, characterized in that: The purification component comprises a filter and a purifier (320) arranged in sequence along the flow direction of the exhaust gas, the filter being used to filter dust and absorb harmful gases, and the purifier (320) being used to purify the filtered exhaust gas.

7. The dust removal and purification device according to claim 6, characterized in that: The filter comprises a pre-filter layer (311), a main filter layer (312) and a gas filter layer (313) which are sequentially arranged along the flow direction of the exhaust gas, and the inner diameter of the filter holes of the main filter layer (312) is smaller than the inner diameter of the filter holes of the pre-filter layer (311).

8. The dust removal and purification device according to any one of claims 1 to 7, characterized in that: The negative pressure fan (330) is electrically connected to a controller (205), and the controller (205) is used to adjust the operating capacity of the negative pressure fan (330). The wind pressure range of the negative pressure fan (330) is 1745Pa to 2094Pa.

9. The dust removal and purification device according to claim 8, characterized in that: The controller (205) is also electrically connected to the purification component, and the controller (205) is used to monitor the operating status of the purification component.

10. A printing device, characterized in that It comprises a dust removal and purification device as described in any one of claims 1 to 9.

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