Filtering device for pharmaceutical weighing equipment

Abstract

The utility model discloses a kind of filtering devices for pharmaceutical weighing equipment, belong to weighing equipment technical field, comprising: multiple installation frames, detachably set in air inlet, the inner wall of installation frame is provided with multiple L-shaped limit plates;Filter bag, detachably installed in installation frame and set in each L-shaped limit plate outside, the inside of filter bag is hollow and one end is provided with opening;Fixed component, set on L-shaped limit plate;The scheme will filter bag set in each L-shaped limit plate of installation frame, then through the operation fixed component can press filter bag, that is, the installation of filter bag is completed, the installation and dismounting process of filter bag is simple and fast, without the aid of external tool and dismounting screw, convenient operation, time-saving and labor-saving, dismounting efficiency is high;And when installing and dismounting, filter bag does not need to be pulled or wound, greatly reduce the damage to filter bag, more conducive to the subsequent use of filter bag, with higher practicality.

Description

Technical Field

[0001] This utility model relates to the field of weighing equipment technology, and more specifically, to a filtration device for pharmaceutical weighing equipment. Background Technology

[0002] Pharmaceutical weighing equipment, often referred to as negative pressure weighing hoods or negative pressure weighing chambers, is a key piece of equipment in the pharmaceutical, biological, and chemical industries for the accurate weighing and dispensing of toxic, harmful, highly active, or highly allergenic materials. The core function of pharmaceutical weighing equipment is to create a negative pressure environment within the working area, preventing dust from escaping and protecting operators and the production environment. The airflow carries dust generated during the weighing process to the air inlet, where it is filtered by the filtration system before being discharged or recycled.

[0003] Currently, the filter screen inside the air inlet of weighing equipment needs to be cleaned or replaced after a period of use. However, the installation and removal of the filter screen inside the air inlet is quite cumbersome, requiring tools and steps such as unscrewing screws. This is very inconvenient, time-consuming, and inefficient. Moreover, the disassembly and assembly process can easily damage the filter screen, resulting in waste and affecting subsequent use.

[0004] Therefore, it is necessary to provide a filtration device for pharmaceutical weighing equipment to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a filtration device for pharmaceutical weighing equipment to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A filter device for pharmaceutical weighing equipment, installed at the air inlet of the weighing equipment, wherein a guide plate is installed outside the air inlet, comprising: Multiple mounting frames are detachably installed inside the air inlet, and the inner wall of the mounting frame is provided with multiple L-shaped limiting plates; The filter bag is detachably installed in the mounting frame and sleeved on each of the L-shaped limiting plates. The filter bag is hollow inside and has an opening at one end. A fixing component is provided on the L-shaped limiting plate to press down the filter bag at the corresponding position.

[0007] Furthermore, the fixing component includes: A screw is threadedly connected to the L-shaped limiting plate, and a pressure plate is rotatably connected to one end of the screw; A limiting rod is provided, one end of which is connected to the pressure plate, and the other end of which slides through the L-shaped limiting plate.

[0008] Furthermore, the L-shaped limiting plate is threaded with multiple studs, and an abutment block is connected to one end of each stud near the pressure plate.

[0009] Furthermore, the side wall of the air inlet is provided with multiple sets of guide plates, and the outer wall of the mounting frame is provided with multiple guide grooves that slide and adapt to the guide plates.

[0010] Furthermore, each of the mounting frames is provided with a retractable limiting block on the side wall of the air inlet, and the end of the limiting block facing the outside of the air inlet is set as an inclined surface.

[0011] Furthermore, an inner cavity is provided in the side wall of the air inlet, which is slidably connected to the limiting block. An elastic element is provided on the bottom wall of the inner cavity, and the other end of the elastic element is connected to the limiting block.

[0012] Furthermore, a handle is also provided on the inner side wall of the mounting frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This solution involves placing the filter bag over each L-shaped limiting plate of the mounting frame, and then using the fixing components to press the filter bag down, thus securing it. The mounting frame is then placed into the air inlet, completing the filter bag installation. To remove the filter bag, the mounting frame is removed from the air inlet, and then the fixing components are released, allowing the filter bag to be pulled off the L-shaped limiting plates. As can be seen, the installation and removal of the filter bag is simple and quick, requiring no external tools or screws, making it convenient and saving considerable time and effort, significantly improving efficiency. Furthermore, the filter bag is not pulled or rolled during installation and removal, greatly reducing the risk of damage and waste, better protecting the filter bag, and facilitating its subsequent use, thus demonstrating high practicality.

[0014] In addition, when disassembling the filter bag, simply release the fixing parts first, and then the filter bag can be moved away as a whole, which greatly reduces the impact of dust on the filter bag and effectively reduces the dispersion of dust during disassembly, further protecting operators and the production environment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the weighing device of this utility model; Figure 2 This is a schematic diagram of the air inlet of the weighing equipment of this utility model; Figure 3 This is a schematic diagram of the structure of the present invention after the air inlet is removed from the mounting frame and filter bag. Figure 4This is a schematic diagram of the structure of the filter bag of this utility model after it is installed in the mounting frame; Figure 5 for Figure 4 Enlarged structural diagram at point A in the middle; Figure 6 This is a structural diagram of the filter bag of this utility model during the installation process; Figure 7 This is a schematic diagram of the overall structure of the mounting frame of this utility model; Figure 8 This is a partial cross-sectional view of the corresponding limiting block at the air inlet of this utility model.

[0016] Explanation of the labels in the diagram: 1. Weighing equipment; 2. Air inlet; 3. Guide plate; 4. Mounting frame; 5. L-shaped limiting plate; 6. Filter bag; 7. Fixing component; 71. Screw; 72. Pressure plate; 73. Limiting slide bar; 8. Stud; 9. Abutment block; 10. Guide plate; 11. Guide groove; 12. Limiting block; 13. Recessed cavity; 14. Elastic element; 15. Handle. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-8 A filter device for pharmaceutical weighing equipment, installed at the air inlet 2 of the weighing equipment 1, with a guide plate 3 installed outside the air inlet 2, characterized in that it includes: Multiple mounting frames 4 are detachably installed inside the air inlet 2, and multiple L-shaped limiting plates 5 are provided on the inner wall of the mounting frame 4; The filter bag 6 is detachably installed inside the mounting frame 4 and fitted over each L-shaped limiting plate 5. The filter bag 6 is hollow inside and has an opening at one end. The filter bag 6 can use filter cloth or filter screen, and can be made of polyester fiber, polypropylene fiber or other composite fiber materials, which can be selected according to actual needs.

[0019] The fixing component 7 is set on the L-shaped limiting plate 5 and is used to press down the filter bag 6 at the corresponding position.

[0020] When in use, the weighing device 1 creates a negative pressure environment in the working area to prevent dust generated during weighing from overflowing. The dust is then carried by airflow from the air inlet 2 and filtered through the filter bag 6 in the air inlet 2.

[0021] When installing the filter bag 6 at the air inlet 2, first, place the filter bag 6 over each of the L-shaped limiting plates 5 of the mounting frame 4, meaning each L-shaped limiting plate 5 is located inside the filter bag 6. There can be four L-shaped limiting plates 5, located at the four corners of the inner wall of the mounting frame 4, thus supporting the four corners of the filter bag 6. Then, by operating the fixing component 7, the filter bag 6 can be pressed down. The fixing component 7 and the mounting frame 4 limit and fix the filter bag 6, thus completing the installation between the filter bag 6 and the mounting frame 4. Afterward, place the mounting frame 4 into the air inlet 2, and finally close the guide plate 3, completing the installation process of the filter bag 6 inside the air inlet 2. To disassemble the filter bag 6, first remove the guide plate 3, then remove the mounting frame 4 from the air inlet 2, and then release the fixing parts 7 from the filter bag 6. The filter bag 6 can then be pulled off from each L-shaped limiting plate 5, thus completing the disassembly of the filter bag 6. In summary, the installation and disassembly process of the filter bag 6 is simple and quick, requiring no external tools or screws. It is convenient to operate, saving a significant amount of time and effort, and significantly improving the efficiency of filter bag 6 installation and disassembly. Furthermore, during installation and disassembly, there is no need to pull or roll the filter bag 6, making installation fast and greatly reducing the possibility of damage to the filter bag 6, minimizing waste, better protecting the filter bag 6, and facilitating its subsequent use, thus demonstrating high practicality.

[0022] In addition, when disassembling the filter bag 6, simply release the fixing part 7 first, and then the filter bag 6 can be moved away as a whole. This can greatly reduce the impact of dust on the filter bag 6, effectively reduce the scattering of dust during disassembly, and further protect the operators and the production environment.

[0023] Furthermore, since multiple mounting frames 4 and multiple filter bags 6 are installed inside the air inlet 2, a single filter bag 6 can be cleaned or replaced as needed, without the need for overall replacement, thus saving costs and improving the utilization rate of the filter bag 6.

[0024] For preferred options, please refer to [link / reference]. Figure 4-7 The fixing component 7 includes: Screw 71 is threadedly connected to L-shaped limiting plate 5, and one end of screw 71 is rotatably connected to pressure plate 72; The limiting rod 73 has one end connected to the pressure plate 72 and the other end sliding through the L-shaped limiting plate 5.

[0025] Specifically, since the screw 71 is rotatably connected to the pressure plate 72, and under the restriction of the limiting slide bar 73, rotating the screw 71 can drive the pressure plate 72 to move up or down. That is, the pressure plate 72 will drive the limiting slide bar 73 to move along the L-shaped limiting plate 5, thereby adjusting the position of the pressure plate 72.

[0026] When the filter bag 6 is placed over the multiple L-shaped limiting plates 5, that is, when the four sides of the filter bag 6 are positioned between the pressure plate 72 and the inner wall of the mounting frame 4, and the filter bag 6 is continuously moved to its final position, the screw 71 is then rotated to move the pressure plate 72 toward the filter bag 6, and finally the pressure plate 72 presses down on the filter bag 6, thus fixing the filter bag 6. Removing the filter bag 6 is similar; simply reverse the screw 71 to move the pressure plate 72 away from the filter bag 6, and then the filter bag 6 can be moved outwards and pulled out, thus completing the removal of the filter bag 6. The installation and removal of the filter bag 6 are very simple and convenient, saving time and effort.

[0027] A rotating block can be installed on the screw 71 to facilitate the rotation of the screw 71.

[0028] In this embodiment, preferably, please refer to 4-5, the L-shaped limiting plate 5 is threaded with a plurality of studs 8, and the end of the stud 8 near the pressure plate 72 is connected to an abutment block 9.

[0029] Specifically, after the filter bag 6 is pressed down by the pressure plate 72, the screw 8 can be rotated, which will drive the abutment block 9 to move, eventually making the abutment block 9 contact the pressure plate 72 and hold it in place. This makes the pressure plate 72 more stable, increases the pressing force on the filter bag 6, and prevents the filter bag 6 from moving, deviating, or becoming uneven.

[0030] When disassembling the filter bag 6, first rotate the stud 8 to move the abutment block 9 away from the pressure plate 72, then rotate the screw 71 to make the pressure plate 72 no longer press the filter bag 6, and then the filter bag 6 can be removed.

[0031] In this embodiment, preferably, please refer to [reference needed]. Figure 2-4 and Figure 6-7 The side wall of the air inlet 2 is provided with multiple sets of guide plates 10, and the outer wall of the mounting frame 4 is provided with multiple guide grooves 11 that are slidably adapted to the guide plates 10.

[0032] Specifically, when the mounting frame 4 is placed into the air inlet 2, the guide groove 11 of the mounting frame 4 is aligned with the guide plate 10 at the corresponding position. Then, the mounting frame 4 is slid along the guide plate 10 through the guide groove 11 to move the mounting frame 4 into the air inlet 2. The guide plate 10 can not only position and restrict the mounting frame 4, making the mounting frame 4 move in and out more smoothly, but also support the mounting frame 4 and restrict the vertical movement of the mounting frame 4, so that the mounting frame 4 can be stably in the corresponding position, ensuring the stability of the mounting frame 4 in subsequent use.

[0033] In this embodiment, preferably, please refer to [reference needed]. Figure 2 , Figure 4 and Figure 6 A handle 15 is also provided on the inner wall of the mounting frame 4.

[0034] With this design, the mounting frame 4 can be moved by pulling the handle 15, making it easy to move the mounting frame 4 into the air inlet 2 or to move the mounting frame 4 out of the air inlet 2, making the operation simpler.

[0035] In this embodiment, preferably, please refer to [reference needed]. Figure 2-3 Each mounting frame 4 has a retractable limiting block 12 on the side wall of the air inlet 2. The end of the limiting block 12 facing the outside of the air inlet 2 is set as an inclined surface.

[0036] With this design, when the mounting frame 4 is placed into the air inlet 2, the mounting frame 4 will first contact the limiting block 12. The mounting frame 4 will press against the limiting block 12 along its inclined surface, causing the limiting block 12 to retract into the side wall of the air inlet 2 under pressure. When the mounting frame 4 is in place, the limiting block 12 will no longer be pressed and will extend and reset. At this time, the limiting block 12 will block the outer end of the mounting frame 4, thereby limiting the left and right position of the mounting frame 4 through the cooperation of the inner wall of the air inlet 2. This effectively prevents the mounting frame 4 from moving or shaking during use, ensuring the stability of the mounting frame 4.

[0037] When it is necessary to remove the mounting frame 4, first squeeze the limiting block 12 to make it retract into the side wall of the air inlet 2, and then the mounting frame 4 can be moved out of the air inlet 2. The operation is simple and convenient.

[0038] In this embodiment, preferably, please refer to [reference needed]. Figure 8 An inner cavity 13 is provided in the side wall of the air inlet 2 and is slidably connected to the limiting block 12. An elastic element 14 is provided on the bottom wall of the inner cavity 13. The other end of the elastic element 14 is connected to the limiting block 12. The elastic element 14 in this application can be a spring.

[0039] With this design, when the limiting block 12 is compressed, it will move and contract into the recessed cavity 13, causing the elastic element 14 to compress and deform. When the limiting block 12 is no longer compressed, the rebound force of the elastic element 14 will drive the limiting block 12 to move out of the recessed cavity 13 and eventually reset.

[0040] It should be understood that the examples and embodiments described herein are for illustrative purposes only and are not intended to limit the present invention. Those skilled in the art can make various modifications or changes based on them. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0041] It should be noted that if the embodiments of this utility model involve directional indicators such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicators will also change accordingly.

[0042] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, "multiple" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A filter device for pharmaceutical weighing equipment, installed at the air inlet (2) of the weighing equipment (1), wherein a guide plate (3) is installed outside the air inlet (2), characterized in that, include: Multiple mounting frames (4) are detachably installed inside the air inlet (2), and multiple L-shaped limiting plates (5) are provided on the inner wall of the mounting frame (4). The filter bag (6) is detachably installed inside the mounting frame (4) and sleeved on each of the L-shaped limiting plates (5). The filter bag (6) is hollow inside and has an opening at one end. A fixing component (7) is provided on the L-shaped limiting plate (5) to press down the filter bag (6) at the corresponding position.

2. The filtration device for pharmaceutical weighing equipment according to claim 1, characterized in that, The fixing component (7) includes: A screw (71) is threadedly connected to the L-shaped limiting plate (5), and a pressure plate (72) is rotatably connected to one end of the screw (71). The limiting slide bar (73) has one end connected to the pressure plate (72) and the other end sliding through the L-shaped limiting plate (5).

3. A filtration device for pharmaceutical weighing equipment according to claim 2, characterized in that, The L-shaped limiting plate (5) is threaded with multiple studs (8), and an abutment block (9) is connected to one end of the stud (8) near the pressure plate (72).

4. A filtration device for pharmaceutical weighing equipment according to claim 1, characterized in that, The side wall of the air inlet (2) is provided with multiple sets of guide plates (10), and the outer wall of the mounting frame (4) is provided with multiple guide grooves (11) that are slidably adapted to the guide plates (10).

5. A filtration device for pharmaceutical weighing equipment according to claim 1, characterized in that, The side wall of the air inlet (2) is provided with a retractable limiting block (12) at the position of each of the mounting frames (4), and the end of the limiting block (12) facing the outside of the air inlet (2) is set as an inclined surface.

6. A filtration device for pharmaceutical weighing equipment according to claim 5, characterized in that, The air inlet (2) has a recessed cavity (13) that is slidably connected to the limiting block (12) in the side wall. The bottom wall of the recessed cavity (13) is provided with an elastic element (14), and the other end of the elastic element (14) is connected to the limiting block (12).

7. A filtration device for pharmaceutical weighing equipment according to claim 1, characterized in that, A handle (15) is also provided on the inner side wall of the mounting frame (4).

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