Gaseous boric acid filter element
Through the combination of a multi-layer yarn winding structure and a high-precision inner filter layer, the problem of hardening and blocking of the gaseous boric acid filter element is solved, which extends the service life and improves the filtration accuracy and pollution capacity, realizing the sortable recycling of the filter element.
Patent Information
- Application Number
- CN202323660337.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2033-12-29
AI Technical Summary
When existing gas filters use wire-wound filters to filter gas boric acid, the filter material of the filter element becomes harder due to chemical action, which can easily cause blockage, resulting in short service life and frequent replacement of the filter element.
A gaseous boric acid filter filter element was designed, adopting a multi-layer yarn wound structure. The tightness of the outer filter layer from the inner layer to the outer layer is from tight to fluffy, and the filtration accuracy is from high to low. The inner filter layer is made of high-precision filtering. The material, first filter gaseous boric acid through the outer filter layer to delay the hardening of the filter material, and the inner filter layer ensures the filtration accuracy and extends the service life.
It effectively extends the service life of the filter element, improves the pollution capacity and filtering accuracy, reduces the frequency of replacing the filter element, and realizes classified recycling through the design of the support frame.
Smart Images
Figure CN222219005U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gas filtering, in particular to a gaseous boric acid filter element. Background Art
[0002] A gas filter is a device used to filter impurities from gas. It is widely used in metallurgy, chemical industry, medicine, food and other fields. Its main components are the filter element and the casing. The filter element is the main filtering part. During the production and transportation process, impurity particles will penetrate into the gas. If these particles are not removed, the product may be scrapped and cause economic losses. The filter element is equipped with filter materials to intercept particulate impurities and filter out clean gas for industrial use.
[0003] At present, gas filters can use wire-wound filter elements, which can remove suspended particulate matter, solid particles and microorganisms. When making wire-wound filter elements, textile fiber yarns are evenly wound on a porous skeleton, and then wound layer by layer to a specified diameter, thereby forming thousands of pores of similar size. The size of the pores determines the accuracy of the filter element, and the pore size is determined by the thickness of the yarn and the density during winding.
[0004] In the production process of semiconductors and photovoltaic solar cells, a large amount of pure gaseous boric acid is needed due to process requirements. However, boric acid is corrosive. When using a wire-wound filter element to filter the impurity particles in the gaseous boric acid, the filter material of the filter element becomes hard due to chemical reactions, which can easily cause blockage, resulting in a short service life of the filter element and the need for frequent replacement of the filter element. Summary of the invention
[0005] In order to increase the service life of the entire filter element, the utility model provides a gaseous boric acid filter element.
[0006] The present application provides a universal hanging basket for cantilever beam construction using the following technical solutions:
[0007] A gaseous boric acid filter element comprises a support frame and an inner filter layer and an outer filter layer which are sequentially sleeved on the outer periphery of the support frame from the support frame toward the outside; the outer filter layer comprises an outer filter inner layer, an outer filter middle layer and an outer filter outer layer which are sequentially arranged from the outer filter inner layer toward the outside, the outer filter inner layer, the outer filter middle layer and the outer filter outer layer are all formed by yarn winding, the tightness of the outer filter layer winding is from tight to fluffy from the outer filter inner layer, the outer filter middle layer to the outer filter outer layer, and the filtration accuracy of the outer filter layer is from high to low from the outer filter inner layer, the outer filter middle layer to the outer filter outer layer; a plurality of through holes are arranged on the outer periphery of the support frame, the barrel opening at one end of the support frame is an air outlet, and the barrel opening at the other end is provided with an end cover, and the end cover abuts against the outer filter outer layer.
[0008] By adopting the above technical scheme, the mouth of one end of the filter element is sealed with a sealing end cap, and the mouth of the other end is connected to the filter, and the gaseous boric acid is filtered through the inner filter layer and the outer filter layer of the filter element; during filtration, the gaseous boric acid first passes through the outer filter layer. The tightness of the yarn in the outer filter layer is different, and the degree of oxidation and hardening of the yarn is also different. Although there will be local hardening, it is still fluffy as a whole, thereby delaying the hardening and clogging of the filter material and extending the service life of the filter element; the gaseous boric acid then passes through the inner filter layer. The final purification degree of the gas depends on the filtration accuracy of the inner filter layer. The inner filter layer uses high-precision filter material to ensure that the filtration accuracy of the filter element can meet the cleanliness standard, thereby extending the service life of the filter element while ensuring accuracy.
[0009] Preferably, the yarn of the outer filter middle layer is spirally wound around the outer filter inner layer, and the yarn of the outer filter outer layer is spirally wound around the outer filter middle layer.
[0010] By adopting the above technical solution, the yarn winding method of the outer filter middle layer and the outer filter outer layer is set to spiral winding, the pore channels between the threaded yarns are large, and are not easily blocked after collecting dirt. The size of the pore channels can be changed according to the pitch size of the winding setting, which is convenient for control.
[0011] Preferably, the yarns of the outer filter layer are provided with fluff.
[0012] By adopting the above technical solution, the yarn is processed with fluff, and the fluff is arranged on the yarn to increase the surface area of the filter layer, thereby enhancing the ability to capture foreign particles, so that the impurities adhere to the surface of the fluff, thereby improving the dirt holding strength of the outer filter middle layer and the outer filter outer layer.
[0013] Preferably, the yarns of the outer filter inner layer are cross-wound on the inner filter layer in a grid shape.
[0014] By adopting the above technical solution, the winding method of the filter yarn of the outer filter inner layer is set to be cross-wound in a grid shape. The grid-shaped channel can stably distinguish the shape and size of impurities, so that the filtration accuracy of the outer filter layer and the inner layer is accurate, achieving a stable screening effect.
[0015] Preferably, the thickness of the outer filter inner layer is smaller than the thickness of the outer filter middle layer and the outer filter outer layer.
[0016] By adopting the above technical solution, the thickness of the outer filter inner layer is set to be smaller than the thickness of the outer filter middle layer and the outer filter outer layer. The suitable thickness of the outer filter layer is 10-15mm. The suitable thickness is limited. The precision of the outer filter middle layer and the outer filter outer layer is lower than that of the outer filter inner layer, and a large amount of large-diameter impurities will be filtered out, requiring more dirt holding space. Such reasonable allocation of space can effectively delay the time for impurities to block the filter element.
[0017] Preferably, the through holes include large through holes and small through holes, a plurality of the large through holes extend from one end of the support frame to the other end, and the small through holes are arranged between adjacent large through holes.
[0018] By adopting the above technical solution, large rectangular through holes and small rectangular through holes are evenly spaced along the tube mouth of the support frame from one end to the other end. The larger the size of the through hole, the higher the filtration efficiency and the less likely it is to be blocked. However, the larger the size of the through hole, the less effective supporting structure of the support frame. The combination of large rectangular through holes and small rectangular through holes can ensure the filtration efficiency on the one hand, and the supporting strength of the support frame on the other hand.
[0019] Preferably, a connecting thread is provided at one end of the support frame close to the air outlet.
[0020] By adopting the above technical solution, a connecting thread is provided at one end of the supporting frame near the air outlet, and the filter element can be threadedly connected to various types of connectors. The connector and the filter are combined to enable the filter element to be connected to filters of various models, and the connecting surfaces connected by the threads are engaged with each other, thereby achieving a better tightness, so that the filtered gas inside the filter element is not affected by external gas.
[0021] Preferably, the support frame is provided with a cutting groove, and the cutting groove extends from one end of the support frame to the other end.
[0022] By adopting the above technical solution, a cutting groove is set at one end of the barrel mouth of the support frame, and the cutting groove extends to the other end of the barrel mouth. After the service life of the filter element ends, it is convenient for the cutting tool to extend from the cutting groove at the barrel mouth to cut the tightly wound yarn. After the yarn is cut, the support frame is classified and recycled.
[0023] In summary, the utility model has the following advantages compared with the prior art:
[0024] 1. By setting the outer filter layer with different tightness, the filter material will not become hard as a whole and cause blockage after chemical reaction with gas boric acid, thus extending the service life. In addition, an additional high-precision inner filter layer structure is added to extend the service life while ensuring that the filtering accuracy meets the standard.
[0025] 2. The filter element has a high dirt holding capacity. The outer filter middle layer and the outer filter outer layer are spirally wound to make the pore channel large, which can accommodate a large amount of impurities and is not easy to be blocked. The yarn is processed with fluff to increase the surface area of the dirt holding structure, so that the dirt holding capacity is further improved.
[0026] 3. The support frame can be recycled in different categories. The support frame is equipped with cutting grooves, which facilitate cutting tools to cut tightly wound yarns for easy recycling. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 This is a front view cross-sectional view of the filtering structure of a gaseous boric acid filter element in Example 1 of the present application.
[0028] Figure 2 This is a top view cross-sectional view of the filtering structure of a gaseous boric acid filter element in Example 1 of the present application.
[0029] Figure 3 This is a schematic diagram of the overall structure of the support skeleton of a gaseous boric acid filter element in Example 1 of the present application.
[0030] Figure 4 This is a schematic diagram of the winding method of the outer filter inner layer of a gaseous boric acid filter element in Example 1 of the present application.
[0031] Figure 5 It is a schematic diagram of the winding method of the outer filter middle layer and the outer filter outer layer of a gaseous boric acid filter element in Example 1 of the present application.
[0032] Figure 6 This is a schematic diagram of the overall structure of the support skeleton of a gaseous boric acid filter element in Example 2 of the present application.
[0033] Figure 7 yes Figure 6 Enlarged schematic diagram of part A in the middle.
[0034] Description of reference numerals:
[0035] 1. Support frame; 11. Connecting thread; 12. Through hole; 121. Large through hole; 122. Small through hole; 13. Cutting groove; 14. Air outlet; 15. Bump; 2. Inner filter layer; 3. Outer filter layer; 31. Outer filter inner layer; 32. Outer filter middle layer; 33. Outer filter outer layer; 34. Yarn. DETAILED DESCRIPTION
[0036] The following is combined with Figure 1-7 This application is described in further detail.
[0037] The embodiment of the present application discloses a gaseous boric acid filter element.
[0038] Embodiment 1:
[0039] Reference Figure 1-3A gaseous boric acid filter element comprises a support frame 1 and an inner filter layer 2 and an outer filter layer 3 which are sequentially sleeved on the outer periphery of the support frame 1 from the support frame 1 toward the outside, the outer filter layer 3 comprises an outer filter inner layer 31, an outer filter middle layer 32 and an outer filter outer layer 33 which are sequentially arranged from the outer filter inner layer 31 toward the outside, the outer filter inner layer 31, the outer filter middle layer 32 and the outer filter outer layer 33 are all formed by winding a yarn 34, the filtering accuracy of the outer filter layer 3 is successively from the outer filter inner layer 31, the outer filter middle layer 32 to the outer filter outer layer 33 from high to low, and the winding tightness of the outer filter layer 3 is successively from the outer filter inner layer 31, the outer filter middle layer 32 to the outer filter outer layer 33 from tight to fluffy; thereby achieving the goal that the filter element filter material is not easy to become hard and blocked as a whole after the chemical reaction with the gaseous boric acid, thereby extending the service life of the filter element.
[0040] Reference Figure 4-5 The yarn 34 of the outer filter inner layer 31 is cross-wound on the inner filter layer 2 in a grid shape, and the grid is in the shape of oblique edges. The yarn 34 of the outer filter middle layer 32 is spirally wound on the outer filter inner layer 31, and the yarn 34 of the outer filter outer layer 33 is spirally wound on the outer filter middle layer 32. The larger the winding pitch, the larger the pores and the less likely they are to be blocked. The yarn 34 of the outer filter middle layer 32 and the outer filter outer layer 33 are provided with fluff, and the fluff is evenly distributed on the outer surface of the yarn 34. The filtration accuracy of the outer filter inner layer 31, the outer filter middle layer 32 and the outer filter inner layer 31 are 10μm, 25μm and 50μm respectively, and the thickness of the outer filter inner layer 31, the outer filter middle layer 32 and the outer filter inner layer 31 are 3mm, 5mm and 5mm respectively. The thickness of the outer filter inner layer 31 is less than the thickness of the outer filter middle layer 32 and the outer filter outer layer 33.
[0041] The inner filter layer 2 includes filter cotton wound and connected to the outside of the supporting frame 1, the filter cotton is wound with several turns, the filtration accuracy of the inner filter layer 2 is 5μm, and the width of the inner filter layer 2 is 3mm; by setting the filtration structure as the outer filter layer 3 and the inner filter layer 2, the outer filter layer 3 is set to a fluffy structure with high dirt holding capacity, and the inner filter layer 2 is designed to be light and thin with high filtration accuracy, thereby achieving the purpose of improving the service life of the filter while ensuring the filtration accuracy.
[0042] Reference Figure 3 The support skeleton 1 is cylindrical, and the barrel opening at one end of the support skeleton 1 is an air outlet 14, and the barrel opening at the other end is covered with an end cap, which abuts against the outer filter outer layer 33. The support skeleton 1 is provided with a connecting thread 11 at one end close to the air outlet 14, and the connecting thread 11 is used to cooperate with the connecting piece to connect the filter element as a whole to the filter. The support skeleton 1 is provided with a cutting groove 13, and the cutting groove 13 extends from one end of the support skeleton 1 to the other end. The support skeleton 1 is provided with a plurality of through holes 12, and the through holes 12 include large through holes 121 and through holes 12, and a plurality of large through holes 121 extend from one end of the support skeleton 1 to the other end, and small through holes 122 are arranged between adjacent large through holes 121; the combination of large through holes 121 and small through holes 122 is adopted to ensure the filtering efficiency on the one hand, and the supporting strength of the support skeleton 1 on the other hand.
[0043] The implementation principle of Example 1 is:
[0044] The gaseous boric acid flows into the outer filter layer 3 from all sides, and enters the inner filter layer 2 from the outer filter layer 3, and finally flows into the filter element air outlet 14 through the through holes 12 on the outer periphery of the support frame 1.
[0045] Embodiment 2:
[0046] Reference Figure 6-7 The difference between this embodiment and the first embodiment is that two protrusions 15 are provided on the outer wall of the support frame 1 at one end away from the air outlet 14 , and the two protrusions 15 are arranged opposite to each other, and a groove is formed between the two protrusions 15 .
[0047] The implementation principle of Example 2 is: when the filter layer 2 in the filter element is wound around the supporting frame 1, a small groove will be left at the set protrusion 15, and the protrusion 15 is far away from the through hole 12. The groove will not affect the filtering accuracy of the filter element. After the service life of the filter element ends, it is convenient for the cutting tool to extend from the groove to cut the yarn 34.
[0048] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A gaseous boric acid filter element, characterized in that: The invention comprises a support frame (1), and an inner filter layer (2) and an outer filter layer (3) which are sequentially sleeved on the outer periphery of the support frame (1) from the support frame (1); the outer filter layer (3) comprises an outer filter inner layer (31), an outer filter middle layer (32) and an outer filter outer layer (33) which are sequentially arranged from the inner filter layer (2) to the outside; the outer filter inner layer (31), the outer filter middle layer (32) and the outer filter outer layer (33) are all formed by winding yarns (34); the outer filter layer (3) is wound with a certain degree of elasticity. The degree of filtration changes from compact to fluffy from the outer filter inner layer (31), the outer filter middle layer (32) to the outer filter outer layer (33), and the filtration accuracy of the outer filter layer (3) changes from high to low from the outer filter inner layer (31), the outer filter middle layer (32) to the outer filter outer layer (33); a plurality of through holes (12) are arranged on the periphery of the support frame (1); a barrel opening at one end of the support frame (1) is an air outlet (14), and a barrel opening at the other end is provided with an end cover, and the end cover abuts against the outer filter outer layer (33).
2. A gaseous boric acid filter element according to claim 1, characterized in that: The yarn (34) of the outer filter middle layer (32) is spirally wound around the outer filter inner layer (31), and the yarn (34) of the outer filter outer layer (33) is spirally wound around the outer filter middle layer (32).
3. A gaseous boric acid filter element according to claim 2, characterized in that: The yarn (34) of the outer filter layer (33) is provided with fluff.
4. A gaseous boric acid filter element according to claim 3, characterized in that: The yarns (34) of the outer filter inner layer (31) are cross-wound on the inner filter layer (2) in a grid-like manner.
5. A gaseous boric acid filter element according to claim 4, characterized in that: The thickness of the outer filter inner layer (31) is smaller than the thickness of the outer filter middle layer (32) and the outer filter outer layer (33).
6. The gaseous boric acid filter element according to claim 1, characterized in that: The through holes (12) comprise large through holes (121) and small through holes (122); a plurality of the large through holes (121) extend from one end of the support frame (1) to the other end; and the small through holes (122) are arranged between adjacent large through holes (121).
7. A gaseous boric acid filter element according to claim 6, characterized in that: The outer wall of one end of the support frame (1) close to the air outlet (14) is provided with a connecting thread (11).
8. A gaseous boric acid filter element according to claim 7, characterized in that: The support frame (1) is provided with a cutting groove (13), and the cutting groove (13) extends from one end of the support frame (1) to the other end.