A dust extraction device and HVAC equipment for a production plant
Patent Information
- Application Number
- CN202521683974.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-07
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-08-07
AI Technical Summary
然而，在纸张裁切的过程中会产生大量纸粉，这些粉尘会通过空调机组回风管道进入HVAC设备内，增大了堵塞空调机组的表冷器的风险，因此，往往利用HVAC滤袋进行除尘
[0007]与现有技术相比，在本申请提供的除尘装置中，滤袋组件的边缘延伸至滑轨与限位凹槽之间，通过机械夹持形成密封边界，能够防止含尘空气泄漏。支撑框组件的外框能够提供滤袋组件的主体的安装空间和边缘固定的支撑结构，由于压紧框朝向外框的一侧设置有滑轨，外框设置有容纳滑轨的限位凹槽，在滑轨和限位凹槽的配合下，能够将滤袋组件的边缘夹紧在两者之间。锁紧结构包括弹性卡扣和用于容纳弹性卡扣的限位卡槽，弹性卡扣设置于压紧框上，限位卡槽设置于外框的外侧壁上，能够实现压紧框与外框的快速连接和分离。在安装过程中，先将滤袋组件主体放入外框内侧，边缘平铺于限位凹槽上方。接着，将压紧框的滑轨对准限位凹槽，沿垂直方向插入，滤袋组件的边缘被带入限位凹槽与滑轨之间。当将压紧框按压至极限位置时，弹性卡扣卡入限位卡槽，回弹后形成自保持锁紧状态。在该除尘装置运行的过程中，含尘空气进入外框与滤袋组件主体之间的空间，穿过滤袋组件主体，粉尘被截留，洁净空气排出，并且，由于滤袋组件的边缘始终与外框、压紧框紧密贴合，大大降低了泄漏现象的发生几率。若要更换滤袋组件时，仅需按压弹性卡扣使其脱离卡槽，向上提拉压紧框，滑轨脱离限位凹槽，移除待更换的滤袋组件，即可更换新的滤袋组件。
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Figure CN224787268U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of papermaking technology, and in particular to a dust removal device and HVAC equipment for a production workshop. Background Technology
[0002] During the paper cutting process, to ensure dimensional stability, reduce static electricity, and guarantee production efficiency, equipment lifespan, and product quality, heating, ventilation, and air conditioning (HVAC) equipment is required in the production workshop to maintain a constant temperature and humidity environment. However, a large amount of paper dust is generated during paper cutting. This dust can enter the HVAC equipment through the return air ducts of the air conditioning unit, increasing the risk of clogging the air conditioning unit's surface cooler. Therefore, HVAC filter bags are often used for dust removal.
[0003] In related technologies, HVAC filter bags are integrated structures of a metal frame and a non-woven fabric filter bag. When replacing them, the entire bag must be discarded, and the metal frame cannot be reused, increasing operating costs. Furthermore, to reduce the discard rate of the metal frame, the non-woven fabric filter bag is often washed and reused. However, the dust inside the filter bag clumps and causes blockages after washing with water, failing to achieve the desired cleaning effect. Utility Model Content
[0004] This application is made in view of the above-mentioned problems. This application provides a dust removal device and an HVAC system for a production workshop.
[0005] According to one aspect of this application, a dust removal device is provided, comprising:
[0006] The system includes a support frame assembly, a pressing frame, a filter bag assembly, and a locking structure. The support frame assembly includes an outer frame. The pressing frame has a slide rail on one side facing the outer frame. The outer frame has a limiting groove for accommodating the slide rail. The main body of the filter bag assembly is disposed inside the outer frame. The edge of the filter bag assembly extends between the slide rail and the groove to press the edge of the filter bag assembly onto the outer frame. The locking structure includes an elastic buckle and a limiting groove for accommodating the elastic buckle. The elastic buckle is disposed on the pressing frame, and the limiting groove is disposed on the outer side wall of the outer frame.
[0007] Compared with existing technologies, in the dust removal device provided in this application, the edge of the filter bag assembly extends between the slide rail and the limiting groove, forming a sealed boundary through mechanical clamping, which can prevent the leakage of dust-laden air. The outer frame of the support frame assembly provides installation space for the main body of the filter bag assembly and a support structure for fixing the edges. Since the pressure frame is provided with a slide rail on the side facing the outer frame, and the outer frame is provided with a limiting groove to accommodate the slide rail, the edge of the filter bag assembly can be clamped between the slide rail and the limiting groove. The locking structure includes an elastic buckle and a limiting groove for accommodating the elastic buckle. The elastic buckle is provided on the pressure frame, and the limiting groove is provided on the outer side wall of the outer frame, which can realize the quick connection and separation of the pressure frame and the outer frame. During installation, the main body of the filter bag assembly is first placed inside the outer frame, with the edges laid flat above the limiting groove. Then, the slide rail of the pressure frame is aligned with the limiting groove and inserted vertically, and the edge of the filter bag assembly is brought into the space between the limiting groove and the slide rail. When the clamping frame is pressed to its limit position, the elastic buckle engages with the limiting groove and springs back to form a self-locking state. During the operation of this dust removal device, dust-laden air enters the space between the outer frame and the filter bag assembly body, passes through the filter bag assembly body, and the dust is trapped while clean air is discharged. Furthermore, because the edges of the filter bag assembly are always in close contact with the outer frame and the clamping frame, the probability of leakage is greatly reduced. To replace the filter bag assembly, simply press the elastic buckle to disengage it from the groove, pull the clamping frame upwards, the slide rail disengages from the limiting groove, remove the filter bag assembly to be replaced, and a new filter bag assembly can be installed.
[0008] Based on this, the dust removal device provided in this application embodiment does not require tools or discard other parts when replacing the filter bag assembly. Furthermore, it does not require repeated cleaning of the used filter bag assembly after replacement, thereby reducing operating costs, shortening the replacement time of the filter bag assembly, and ensuring filtration effect.
[0009] According to another aspect of this application, an HVAC system for a production workshop is provided, comprising:
[0010] The air conditioning unit and the aforementioned dust removal device are provided, wherein the dust removal device is installed at the inlet of the return air duct of the air conditioning unit.
[0011] Compared with the prior art, the beneficial effects of the HVAC equipment for the production workshop provided in this application are the same as those of the dust removal device provided.
[0012] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description
[0013] The above and other objects, features, and advantages of this application will become more apparent from the more detailed description of the embodiments of this application in conjunction with the accompanying drawings. The accompanying drawings are used to provide a further understanding of the embodiments of this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof. In the accompanying drawings, the same reference numerals generally represent the same components or steps.
[0014] Figure 1 A schematic diagram of the dust removal device according to an embodiment of this application is shown;
[0015] Figure 2 A schematic diagram of the support frame assembly according to an embodiment of this application is shown;
[0016] Figure 3 A schematic diagram of the limiting groove according to an embodiment of this application is shown;
[0017] Figure 4 A schematic diagram of the slide rail according to an embodiment of this application is shown.
[0018] Figure label:
[0019] 1-Support frame assembly; 101-Outer frame; 1011-Limiting groove; 102-Support rod; 1021-Anti-slip texture; 2-Pressure frame; 201-Slide rail; 3-Filter bag assembly; 301-Filter bag; 4-Locking structure; 401-Elastic buckle and 402-Limiting groove. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of this application more apparent, exemplary embodiments according to this application will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein.
[0021] During the paper cutting process, to ensure dimensional stability, reduce static electricity, and guarantee production efficiency, equipment lifespan, and product quality, heating, ventilation, and air conditioning (HVAC) equipment is required in the production workshop to maintain a constant temperature and humidity environment. However, a large amount of paper dust is generated during paper cutting. This dust can enter the HVAC equipment through the return air ducts of the air conditioning unit, increasing the risk of clogging the air conditioning unit's surface cooler. Therefore, HVAC filter bags are often used for dust removal.
[0022] In related technologies, HVAC filter bags are integrated structures of a metal frame and a non-woven fabric filter bag. When replacing them, the entire bag must be discarded, and the metal frame cannot be reused, increasing operating costs. Furthermore, to reduce the discard rate of the metal frame, the non-woven fabric filter bag is often washed and reused. However, the dust inside the filter bag clumps and causes blockages after washing with water, failing to achieve the desired cleaning effect.
[0023] To address the aforementioned issues, this application provides a dust removal device that can reduce operating costs, shorten filter bag assembly replacement time, and ensure filtration efficiency. Figure 1 A schematic diagram of the dust removal device according to an embodiment of this application is shown. Figure 2 A schematic diagram of the support frame assembly according to an embodiment of this application is shown.
[0024] Figure 3 A schematic diagram of the limiting groove according to an embodiment of this application is shown. Figure 4 A schematic diagram of the slide rail according to an embodiment of this application is shown. Figures 1 to 4 As shown, the dust removal device includes a support frame assembly 1, a pressing frame 2, a filter bag assembly 3, and a locking structure 4. The support frame assembly 1 includes an outer frame 101. The pressing frame 2 has a slide rail 201 on one side facing the outer frame 101. The outer frame 101 has a limiting groove 1011 to accommodate the slide rail 201. The main body of the filter bag assembly 3 is located inside the outer frame 101, and the edge of the filter bag assembly 3 extends between the slide rail 201 and the limiting groove 1011 to press the edge of the filter bag assembly 3 onto the outer frame 101. The locking structure 4 includes an elastic buckle 401 and a limiting groove 402 to accommodate the elastic buckle 401. The elastic buckle 401 is located on the pressing frame 2, and the limiting groove 402 is located on the outer side wall of the outer frame 101. It should be understood that, due to the... Figure 2 and Figure 3 The limiting groove 1011 cannot be exposed in the middle, therefore, in Figure 2 and Figure 3 The limiting groove 1011 is represented by a dashed line.
[0025] In practice, the filter bag assembly 3 is placed inside the outer frame 101, with its edges laid flat above the limiting groove 1011. Next, the slide rail 201 of the pressing frame 2 is aligned with the limiting groove 1011 and inserted vertically, bringing the edge of the filter bag assembly 3 into the space between the limiting groove 1011 and the slide rail 201. When the pressing frame 2 is pressed to its limit position, the elastic buckle 401 engages with the limiting slot 402, and rebounds to form a self-locking state. During the operation of this dust removal device, dust-laden air enters the space between the outer frame 101 and the filter bag assembly 3, passes through the filter bag assembly 3, and the dust is trapped, while clean air is discharged. Furthermore, because the edge of the filter bag assembly 3 is always tightly fitted to the outer frame 101 and the pressing frame 2, the probability of leakage is greatly reduced. To replace the filter bag assembly 3, simply press the elastic buckle 401 to disengage it from the slot, pull the clamping frame 2 upwards, disengage the slide rail 201 from the limiting groove 1011, remove the filter bag assembly 3 to be replaced, and a new filter bag assembly 3 can be installed.
[0026] Based on this, the dust removal device provided in this application embodiment does not require tools or discard other parts when replacing the filter bag assembly 3. Furthermore, it does not require repeated cleaning of the used filter bag assembly 3 after replacement, thereby reducing the cost of use, shortening the replacement time of the filter bag assembly 3, and ensuring the filtration effect.
[0027] like Figure 1 and Figure 2 As shown, the support frame assembly 1 provided in this application embodiment also includes a plurality of support rods 102 arranged in parallel at equal intervals along the length direction of the outer frame 101. The diameter of the support rods 102 is 3 to 5 mm, and the distance between two adjacent support rods 102 is 70 to 90 mm.
[0028] The outer frame 101 serves as the support structure for the filter bag and must withstand the pressure of the dust-laden airflow during filtration. Support rods 102 are evenly distributed along the length, forming a transverse reinforcement structure that disperses the stress area of the outer frame 101, reducing deformation and helping to maintain the flat shape of the filter bag assembly 3, maximizing the effective filtration area. If the outer frame 101 is a metal frame, the support rods 102 can be metal or stainless steel support rods, connected by welding or bolts; if the outer frame 101 is an engineering plastic frame, the support rods 102 can be insert-molded support rods to ensure bonding strength. When the diameter of the support rods 102 is 3–5 mm, it not only ensures sufficient bending strength but also reduces obstruction to airflow while avoiding excessive weight increase. The filter bag assembly 3 may shake or expand under the action of airflow. The spacing between adjacent support rods 102 is 70–90 mm, which prevents the filter bag assembly 3 from sagging due to a large span (resulting in a reduced filtration area) and also prevents excessively small spacing from increasing airflow resistance.
[0029] For example, such as Figure 1 and Figure 2 As shown, the surface of the support rod 102 provided in this embodiment of the application has anti-slip texture 1021 to increase the roughness of the contact surface, prevent the filter bag assembly 3 from sliding or shifting during installation, and ensure that the edge of the filter bag assembly 3 is accurately aligned with the limiting groove 1011 and the slide rail 201 of the support frame assembly 1. It should be understood that Figure 2 The specific type of anti-slip texture 1021 shown can be adjusted according to the actual situation, as long as it can achieve anti-slip, which will not be elaborated here.
[0030] For example, such as Figure 1 and Figure 2 As shown, the filter bag assembly 3 provided in this embodiment includes multiple filter bags 301. Each filter bag 301 is disposed between two adjacent support rods 102 and / or between the support rod 102 and the outer frame 101. The edges of two adjacent filter bags 301 that are in contact are connected to each other, which can be done by sewing or Velcro. The filtration capacity can be flexibly expanded by increasing the number of filter bags 301 without changing the size of the outer frame 101. The anti-slip texture 1021 of the support rod 102 contacts the surface of the filter bag 301, providing static friction to prevent the filter bag 301 from shaking or shifting under the impact of airflow.
[0031] For example, the filter bag depth provided in this application embodiment is 380-600mm, such as 380mm, 500mm, and 600mm. The filter bag depth refers to the vertical distance from the filter bag body to the bottom of the filter bag (i.e., the effective height of the filter bag), which directly determines the filtration area and space occupied by a single filter bag. Within this range, the greater the filter bag depth, the better the filtration effect.
[0032] In practical applications, the dust removal device provided in this application embodiment also includes multiple pressure sensors, with pressure sensors installed on both the inner and outer sides of each filter bag. When the operator finds that the pressure difference between the inner and outer sides exceeds the target range, the pressure difference of the dust removal device needs to be investigated. If a filter bag is found to be damaged or clogged, the corresponding filter bag needs to be replaced. It should be understood that the specific observation cycle can be adjusted according to the actual situation. Furthermore, the accuracy, response time, model, and specific installation location of the pressure sensors can be adjusted according to the actual situation and are not limited here.
[0033] In practical applications, for more precise monitoring of pressure differences, the dust removal device can also include a controller and an alarm mounted on the clamping frame. The controller is electrically connected to both the pressure sensor and the alarm. When the pressure sensor transmits the detected pressure of the corresponding filter bag to the controller, if the controller determines that the pressure difference between the inner and outer sides exceeds the target range, it activates the electrically connected alarm to alert personnel to replace the filter bag.
[0034] In an alternative embodiment, the dust removal device provided in this application further includes a sealing strip. The sealing strip is disposed within a limiting groove, and its elastic deformation can be used to compensate for machining tolerances, thereby improving structural tolerance. It should be understood that the sealing strip is omitted in the drawings to more clearly show the connection relationships between other components in the dust removal device.
[0035] For example, the sealing strip provided in this application embodiment has a thickness of 2-3 mm to balance the compression and contact stress. The sealing strip can be an L-shaped sealing strip with its long side embedded in the limiting groove and its short side conforming to the side of the slide rail. The sealing strip can also be a U-shaped sealing strip that wraps around both sides of the slide rail.
[0036] For example, in the embodiments of this application, the difference between the length of the clamping frame and the length of the outer frame is 3 to 5 mm, the difference between the width of the clamping frame and the width of the outer frame is 3 to 5 mm, and the thickness of the clamping frame is the same as the thickness of the outer frame, which provides good sealing performance while facilitating installation.
[0037] For example: the length of the compression frame is 488mm, the width is 488mm, and the thickness is 17mm; the length of the outer frame is 485mm, the width is 485mm, and the thickness is 17mm; the depth of the filter bag is 500mm.
[0038] For example: the length of the clamping frame is 593mm, the width is 593mm, and the thickness is 18mm; the length of the outer frame is 590mm, the width is 590mm, and the thickness is 18mm; the depth of the filter bag is 380mm.
[0039] For example: the length of the clamping frame is 593mm, the width is 593mm, and the thickness is 18mm; the length of the outer frame is 590mm, the width is 590mm, and the thickness is 18mm; the depth of the filter bag is 600mm.
[0040] For example: the length of the compression frame is 593mm, the width is 490mm, and the thickness is 18mm; the length of the outer frame is 590mm, the width is 487mm, and the thickness is 18mm; the depth of the filter bag is 380mm.
[0041] For example: the length of the compression frame is 593mm, the width is 490mm, and the thickness is 18mm; the length of the outer frame is 590mm, the width is 487mm, and the thickness is 18mm; the depth of the filter bag is 600mm.
[0042] For example: the length of the compression frame is 593mm, the width is 290mm, and the thickness is 18mm; the length of the outer frame is 590mm, the width is 287mm, and the thickness is 18mm; the depth of the filter bag is 380mm.
[0043] For example: the length of the compression frame is 593mm, the width is 290mm, and the thickness is 18mm; the length of the outer frame is 590mm, the width is 287mm, and the thickness is 18mm; the depth of the filter bag is 600mm.
[0044] For example: the length of the compression frame is 490mm, the width is 490mm, and the thickness is 18mm; the length of the outer frame is 487mm, the width is 487mm, and the thickness is 18mm; the depth of the filter bag is 380mm.
[0045] For example: the length of the clamping frame is 490mm, the width is 490mm, and the thickness is 18mm; the length of the outer frame is 487mm, the width is 487mm, and the thickness is 18mm; the depth of the filter bag is 680mm.
[0046] For example: the length of the compression frame is 490mm, the width is 290mm, and the thickness is 18mm; the length of the outer frame is 487mm, the width is 287mm, and the thickness is 18mm; the depth of the filter bag is 380mm.
[0047] For example: the length of the clamping frame is 490mm, the width is 290mm, and the thickness is 18mm; the length of the outer frame is 487mm, the width is 287mm, and the thickness is 18mm; the depth of the filter bag is 600mm.
[0048] This application also provides an HVAC system for a production workshop, which can prevent dust from clogging components of the air conditioning unit with lower operating costs and higher filtration efficiency. The HVAC system includes an air conditioning unit and the aforementioned dust removal device, which is installed at the inlet of the air conditioning unit's return air duct. It should be understood that this air conditioning unit is a common type of unit in the prior art, and its specific structure and working principle will not be elaborated here. The innovation of this HVAC system lies in the installation of a dust removal device at the inlet of the air conditioning unit's return air duct. The connection between the two is a flange connection. In practical applications, a first flange can be installed on the return air duct, and a second flange can be installed on the outer frame of the dust removal device. After aligning the mounting holes of the first and second flanges, they are tightened with bolts. The specific operating steps can be adjusted according to the actual situation and are not limited here.
[0049] The above description is merely a specific embodiment of this application. Obviously, various modifications and combinations can be made without departing from the spirit and scope of this application. Accordingly, this specification and accompanying drawings are merely exemplary illustrations of this application as defined by the appended claims, and are considered to cover any and all modifications, variations, combinations, or equivalents within the scope of this application. Clearly, those skilled in the art can make various alterations and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and modifications of this application fall within the scope of the claims of this application and their equivalents, the intent of this application includes these modifications and modifications. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of this application. Therefore, the protection scope of this application should be determined by the protection scope of the stated claims.
[0050] It should also be noted that in the apparatus and method of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.
[0051] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.
[0052] The above description has been given for illustrative and descriptive purposes. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although several exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations therein.
Claims
1. A dust removal device, characterized in that, include: The system includes a support frame assembly, a pressing frame, a filter bag assembly, and a locking structure. The support frame assembly includes an outer frame. The pressing frame has a slide rail on one side facing the outer frame. The outer frame has a limiting groove for accommodating the slide rail. The main body of the filter bag assembly is disposed inside the outer frame. The edge of the filter bag assembly extends between the slide rail and the groove to press the edge of the filter bag assembly onto the outer frame. The locking structure includes an elastic buckle and a limiting groove for accommodating the elastic buckle. The elastic buckle is disposed on the pressing frame, and the limiting groove is disposed on the outer side wall of the outer frame.
2. The dust removal device as described in claim 1, characterized in that, The support frame assembly also includes a plurality of support rods arranged in parallel at equal intervals along the length of the outer frame. The diameter of the support rods is 3-5 mm, and the distance between two adjacent support rods is 70-90 mm.
3. The dust removal device as described in claim 2, characterized in that, The surface of the support rod has anti-slip texture.
4. The dust removal device as described in claim 2, characterized in that, The filter bag assembly includes multiple filter bags, each of which is disposed between two adjacent support rods and / or between the support rods and the outer frame, with the edges of two adjacent filter bags in contact being connected to each other.
5. The dust removal device as described in claim 4, characterized in that, The depth of the filter bag is 380~600mm.
6. The dust removal device as described in claim 4, characterized in that, The edges of two adjacent filter bags that come into contact are connected to each other by sewing, and / or the edges of two adjacent filter bags that come into contact are connected to each other by Velcro.
7. The dust removal device according to any one of claims 1 to 6, characterized in that, The dust removal device also includes a sealing strip, which is disposed within the limiting groove.
8. The dust removal device as described in claim 7, characterized in that, The thickness of the sealing strip is 2~3mm.
9. The dust removal device as described in claim 6, characterized in that, The difference between the length of the clamping frame and the length of the outer frame is 3~5mm, the difference between the width of the clamping frame and the width of the outer frame is 3~5mm, and the thickness of the clamping frame is the same as the thickness of the outer frame.
10. An HVAC system for a production workshop, characterized in that, include: An air conditioning unit and a dust removal device according to any one of claims 1 to 9, wherein the dust removal device is disposed at the inlet of the return air duct of the air conditioning unit.