Filter element assembly and flat plate type filter with same

Abstract

The utility model discloses a filter element assembly and a flat plate type filter with the same, a filter element comprises a film-covered filtering base material and a non-woven fabric layer arranged on one side of the film-covered filtering base material, the filter element is in a folded sheet shape, a frame piece comprises a pair of frameworks, each framework comprises a connecting rod and an arch-shaped frame, two tail ends of the arch-shaped frames are respectively connected to the pair of connecting rods, and the connecting rods are connected with the frame piece. The frameworks are oppositely arranged, the arch-shaped frames on the frameworks are correspondingly embedded into the folding grooves of the filter element and abut against the filter element, the non-woven fabric layers are connected with the arch-shaped frames through the bonding layers, and the positioning pieces are arranged on the frameworks and connected with the connecting rods on the frameworks. The non-woven fabric layer on one side of the film-coated filtering base material can be relatively fixed with the framework after being bonded, the stability of the filter element in a frame piece is improved after the other framework is connected with the framework in a positioning manner, the position stability of the filter element during filtering work is ensured, the stability between the pair of frameworks is improved after the pair of frameworks is connected, and the filtering efficiency is improved. And the filter element assemblies are not easy to misplace, so that the mounting accuracy and the mounting effect are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering devices, in particular to a filter element component and a flat filter having the same. Background Art

[0002] The filter element plays a filtering role during use. The filter element plays the role of intercepting impurities and allowing gas to pass through. During the long-term use of the filter, a lot of dust will adhere to the filter element on the air inlet side. If the dust and impurities are not cleaned, the filtering effect will inevitably be reduced. However, frequent maintenance and replacement of the filter element will also affect work efficiency and increase costs. Based on this, a filter element with a coating can be used. For example, in the prior art, a PTFE layer is coated on both sides of the non-woven fabric layer. The PTFE layer can better avoid the accumulation of dust compared to the non-woven fabric layer. However, due to the low surface free energy of the PTFE layer, it may cause unstable connection during the process of forming a filter element assembly with the external structure. In addition, especially for a flat-plate filter, a pair of skeletons are located on both sides of the filter element and are relatively arranged, and are respectively positioned in the grooves of the filter element after aligning the folded pieces, and the filter element and the skeleton are placed together as a whole in the outer frame to form a flat-plate filter. In this method, the periphery of the filter element needs to protrude from the periphery of the skeleton so that the filter element can be positioned by bending and wrapping the skeleton to ensure that the position of the filter element is fixed. This method not only has a poor positioning and fixing effect on the filter element, but also leads to a large amount of filter element usage, which also increases the cost. Utility Model Content

[0003] The purpose of the utility model is to provide a filter element assembly and a flat filter having the same, wherein the non-woven fabric layer on one side of the membrane-coated filter substrate can be relatively fixed in position after being bonded to a frame, and the other frame is positioned and connected to the frame to improve the stability of the filter element in the frame member, thereby ensuring its stable position during filtering work, and after a pair of frames are connected, the stability between the two is improved, and the filter element assemblies are not easily misaligned with each other, thereby ensuring installation accuracy and installation effect.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] Filter element assembly, including:

[0006] The filter element comprises a membrane filter substrate and a non-woven fabric layer arranged on one side of the membrane filter substrate. The filter element is in a folded sheet shape, and the non-woven fabric layer is located on the air outlet side of the filter element.

[0007] The frame member includes a pair of skeletons, the skeletons include connecting rods and bow-shaped frames, the two ends of the plurality of bow-shaped frames are respectively connected to the pair of connecting rods, the pair of skeletons are arranged opposite to each other, and the bow-shaped frames on the two skeletons are correspondingly embedded in the folding grooves of the filter element and abut against the filter element, and the non-woven fabric layer is connected to the bow-shaped frames through an adhesive layer.

[0008] A positioning member is arranged on the frame and connects a pair of connecting rods on the frame.

[0009] As a further optimization, the membrane filter substrate includes a base non-woven fabric and a PTFE layer respectively arranged on both sides of the base non-woven fabric. The non-woven fabric layer is hot-pressed connected to the PTFE layer on one side. The use of the non-woven fabric layer solves the problem that the PTFE layer is difficult to connect / bond.

[0010] As a further optimization, the positioning member includes an insert rod, which is arranged on the connecting rod of one skeleton and in the same direction as the bow frame on the skeleton. A socket is provided on the connecting rod of the other skeleton. After the insert rod abuts against the filter element, it is embedded in the socket to fix the adjacent connecting rod. When the insert rod is embedded in the socket, part of the filter element is also embedded in the socket, forming an effect similar to "interference abutment" to ensure the connection stability of a pair of skeletons.

[0011] As a further optimization, the height of the insertion rod is greater than the height of the bow frame, and less than the sum of the heights of the bow frame and the connecting rod.

[0012] As a further optimization, the positioning member includes an insertion rod, which is arranged on a bow frame of one frame, and a hole is provided on the connecting rod of another frame. After the insertion rod abuts against the filter element, it is embedded in the hole to fix the adjacent connecting rod.

[0013] As a further optimization, at least one side of the insertion rod away from the connecting rod has magnetic attraction, a magnet is provided in the insertion hole, and the insertion rod is adsorbed on the magnet, thereby further improving the connection stability between a pair of skeletons.

[0014] As a further optimization, there are four positioning members, and the four positioning members are symmetrically arranged on the frame member in pairs to ensure the stability and balance of a pair of skeleton connections.

[0015] The utility model also provides a flat filter, comprising an outer frame and the filter element assembly mentioned above, wherein an embedding groove is arranged in the outer frame, and the side of the frame member is arranged in the embedding groove.

[0016] As a further optimization, a rib plate is provided on one side of the outer frame close to the non-woven fabric layer, which can ensure the structural stability of the outer frame and limit the filter element after abutting against the filter element.

[0017] As a further optimization, the outer frame is a bent forming structure.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. A non-woven fabric layer is arranged on one side of the membrane filter substrate, and the non-woven fabric layer can be bonded to a frame to achieve a relatively fixed position. After the other frame is positioned and connected to the frame, the stability of the filter element in the frame is improved to ensure that the filter element is in a stable position during filtering;

[0020] 2. After positioning and connecting a pair of skeletons, the stability between the two is improved, the overall structural integrity of the filter element assembly is realized, and it is convenient to install it in the filter. The filter element assemblies are not easily misaligned with each other, ensuring the accuracy and effect of the installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the filter element assembly of the present utility model.

[0022] Figure 2 It is a cross-sectional view of the filter element in the filter element assembly of the utility model.

[0023] Figure 3 It is a schematic diagram of the connection between the frame member and the connecting member in the filter element assembly of the utility model.

[0024] Figure 4 This is a structural diagram of another embodiment of the connecting piece in the filter element assembly of the utility model.

[0025] Figure 5 This is a structural diagram of the flat plate filter of the utility model.

[0026] Figure 6 This is a structural diagram of the outer frame of the flat-plate filter of the utility model. DETAILED DESCRIPTION

[0027] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0028] like Figures 1 to 3As shown, the filter element assembly 100 includes a filter element 1, a frame member and a positioning member 3. The filter element 1 includes a membrane filter substrate 11 and a non-woven fabric layer 12 arranged on one side of the membrane filter substrate 11. The filter element 1 is in a folded sheet shape and forms a lower folded groove 101 and an upper folded groove 102, wherein the side with the non-woven fabric layer 12 is located on one side of the lower folded groove 101. The filter element 1 is clamped by a pair of frame members, and an air inlet side is formed on one side of the upper folded groove 102, and an air outlet side is formed on one side of the lower folded groove 101, that is, the non-woven fabric layer 12 is located on the air outlet side. The frame member includes a pair of skeletons, specifically a first skeleton 21 and a second skeleton 22. The first skeleton 21 includes a first connecting rod 211 and a first bow frame 212. The two ends of the plurality of first bow frames 212 are respectively connected to the pair of first connecting rods 211, and the side of the first bow frame 212 with an open end is in a downward state, and the second skeleton 22 It includes a second connecting rod 221 and a second bow frame 222, and both ends of the multiple second bow frames 222 are respectively connected to a pair of second connecting rods 221, and the second bow frame 222 has an open end on one side facing upward. Based on the above arrangement, the multiple first bow frames 212 can be extended into the lower folding groove 101 and abut against the folding position on the filter element 1, that is, abut against the non-woven fabric layer 12, and then the multiple second bow frames 222 are extended into the upper folding groove 102 and abut against the folding position on the filter element 1, that is, abut against the membrane filter substrate 11, so that the filter element 1 is positioned between a pair of skeletons, and an adhesive layer (not shown) is provided at the folding position of the non-woven fabric layer 12, specifically, glue can be applied at the folding position, and fixedly connected to the first bow frame 212 through the bonding action of the glue, and the first connecting rod 211 and the second connecting rod 221 are connected by a positioning member 3.

[0029] In the present invention, the width of the filter element 1 is slightly larger than the width of the first frame 21 and the second frame 22. The first frame 21 is placed on the table, and the side of the filter element 1 with the non-woven fabric layer 12 after folding is placed downward on the first frame 21, so that the lower folding groove 101 of the filter element 1 is opposite to the first arch frame 212 and abuts against the first arch frame 212. The filter element 1 (non-woven fabric layer 12) and the first arch frame 212 are bonded by the adhesive layer, and the filter element 1 and the first frame 21 are accurately and stably connected. The second skeleton 22 is then placed on the filter element 1, and the second bow frame 222 is aligned with the upper folded groove 102 of the filter element 1 and abutted against the filter element 1 (membrane filter substrate 11), and then the second skeleton 22 and the first skeleton 21 are fixedly connected through the positioning member 3, so that the filter element 1 and the frame member can be stably connected; moreover, the downward pressure of the second bow frame 222 on the filter element 1 can make the filter element 1 (non-woven fabric layer 12) and the first bow frame 212 more fully bonded, thereby improving the reliability of the connection between the three.

[0030] The utility model improves the bonding effect of the filter element 1 on this side by arranging a non-woven fabric layer 12 on one side of the membrane-coated filter substrate 11, so that the non-woven fabric layer 12 is fixedly connected to a skeleton through the adhesive layer, and then positioned and connected to the skeleton through another skeleton to improve the stability of the filter element 1 in the frame member, thereby ensuring its stable position during filtering work; and after a pair of skeletons are positioned and connected, the stability between the two is improved, the overall structural property of the filter element assembly 100 is realized, and it is convenient to operate and install in the filter, and the position between the pair of skeletons is relatively fixed. On the one hand, there will be no misalignment between the two when the filter element assembly 100 is installed on the filter, and on the other hand, the position of the filter element 1 can also be ensured to be stable.

[0031] The membrane filter substrate 11 includes a base non-woven fabric 111 and PTFE layers 112 respectively arranged on both sides of the base non-woven fabric 111. The non-woven fabric layer 12 is hot-pressed and connected to the PTFE layer on one side. Therefore, the filter element 1 has the filtering performance of the membrane filter substrate 11. The setting of the non-woven fabric layer 12 can avoid the problem that the PTFE layer 112 itself (the characteristics of the membrane) cannot be easily bonded to the bow frame after applying an adhesive layer (coating glue) on it. Instead, the non-woven fabric layer 12 is hot-pressed on the PTFE layer 112 on one side instead of coating it with glue and bonding it to the bow frame. The non-woven fabric layer 12 is located on the air outlet side of the filter element 1, and the air inlet side is still the PTFE layer 112. During the air inlet filtration process, since its surface energy is not stained with dust on this side, dust accumulation on this side can be avoided to affect the filtering effect; in addition, by adding another layer of non-woven fabric layer 12 on the basis of the membrane filter substrate 11, the filtering effect of the filter element 1 itself will not be affected.

[0032] Continue as Figure 3 As shown, in one embodiment of the utility model, the positioning member 3 includes an insertion rod 31, which is arranged on the second connecting rod 221 of the second skeleton 22 and is arranged in the same direction and parallel to the second bow frame 222 on the skeleton. A socket 32 ​​is provided on the first connecting rod 212 of the first skeleton 211. After the insertion rod 31 abuts against the filter element 1, it is embedded in the socket 32 ​​to fix the adjacent second connecting rod 222 and the first connecting rod 212 together, that is, the insertion rod 31 presses down the filter element 1 abutting therewith so that the ends formed by the two enter the socket 32 ​​together. On the one hand, the filter element 1 can be further positioned to prevent the filter element 1 from being misplaced and moved. On the other hand, the filter element (with a certain thickness) can be used to fill the space between the insertion rod 31 and the side wall of the socket 32 ​​so that the action between the two is closer, thereby ensuring the stability of the positioning member 3 connecting a pair of skeletons.

[0033] The height of the insertion rod 31 is greater than the height of the bow frame, and less than the sum of the heights of the bow frame and the connecting rod, so that the insertion rod 31 can be inserted into the insertion hole 32.

[0034] like Figure 4 As shown, in another embodiment of the utility model, the positioning member 3 includes an insertion rod, that is, a short rod 31', and the short rod 31' is arranged on a second bow frame 222 of the second skeleton 22. A socket 32 ​​is formed on the first connecting rod 211 of the first skeleton 21. After the short rod 31' abuts against the filter element 1, it is embedded in the socket 32 ​​to fix the adjacent connecting rod. The difference between this embodiment and the above is that the insertion rod is integrated with one of the bow frames.

[0035] Furthermore, the side of the insertion rod 31 away from the connecting rod can have magnetic attraction. For example, a magnet (not shown) matching the shape of the insertion rod 31 is provided, and another magnet is provided in the socket 32. The adsorption of magnets can further ensure the connection stability between the first connecting rod 211 and the second connecting rod 221.

[0036] The above-mentioned positioning members 3 are arranged in four, and the four connecting members 3 are symmetrically arranged on the frame member in pairs, preferably located near the corners of the frame member, which can ensure the stability and balance of the connection between the first frame 21 and the second fixing member 22.

[0037] like Figures 5 to 6 As shown, the utility model also provides a flat filter 200, including an outer frame 4 and the above-mentioned filter element assembly 100, the outer frame 4 is provided with an embedding groove 40, the side of the frame member is arranged in the embedding groove 40, the side with the coated filter substrate 11 is the air inlet side, and the side with the non-woven fabric layer 12 is the air outlet side.

[0038] In addition, a rib plate 41 may be provided on one side of the outer frame 4 close to the non-woven fabric layer 12 to improve the stability of the outer frame 4 and connect the non-woven fabric layer 12 and the rib plate 41 through an adhesive layer to further improve the position stability of the non-woven fabric layer 12 relative to the outer frame 4.

[0039] The outer frame 4 can be a bent molding structure. Specifically, after the three sides of the outer frame 4 are bent and formed, the existing molding structure is guaranteed by installing the upper rib plate 41, and then the filter element assembly 100 is extended into the embedding groove 40 through the unformed side. After the filter element assembly 100 is in place, the side is locked to complete the entire assembly process.

[0040] The specific embodiments described herein are merely examples of the spirit of the present invention. A person skilled in the art of the present invention may make various modifications or additions to the specific embodiments described or replace them in a similar manner, but this will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A filter element assembly, characterized in that: include: The filter element comprises a membrane-covered filter substrate and a non-woven fabric layer arranged on one side of the membrane-covered filter substrate. The filter element is in a folded sheet shape, and the non-woven fabric layer is located on the air outlet side of the filter element. The frame member includes a pair of skeletons, the skeletons include connecting rods and bow-shaped frames, the two ends of the plurality of bow-shaped frames are respectively connected to the pair of connecting rods, the pair of skeletons are arranged opposite to each other, and the bow-shaped frames on the two skeletons are correspondingly embedded in the folding grooves of the filter element and abut against the filter element, and the non-woven fabric layer is connected to the bow-shaped frames through an adhesive layer. A positioning member is arranged on the frame and connects a pair of connecting rods on the frame.

2. The filter element assembly according to claim 1, characterized in that: The membrane filter substrate comprises a base non-woven fabric and PTFE layers respectively arranged on both sides of the base non-woven fabric, and the non-woven fabric layer is hot-pressed connected to the PTFE layer on one side.

3. The filter element assembly according to claim 1, characterized in that: The positioning member comprises an insertion rod, which is arranged on a connecting rod of one frame and in the same direction as the bow frame on the frame. A plug hole is provided on the connecting rod of the other frame. After the insertion rod abuts against the filter element, it is embedded in the plug hole to fix the adjacent connecting rod.

4. The filter element assembly according to claim 3, characterized in that: The height of the insertion rod is greater than the height of the bow frame, and less than the sum of the heights of the bow frame and the connecting rod.

5. The filter element assembly according to claim 1, characterized in that: The positioning member comprises an insert rod, which is arranged on a bow frame of one frame, and a plug hole is arranged on a connecting rod of another frame. After the insert rod abuts against the filter element, it is embedded in the plug hole to fix the adjacent connecting rod.

6. The filter element assembly according to any one of claims 3 to 5, characterized in that: At least one side of the insertion rod away from the connecting rod has magnetic attraction, a magnet is arranged in the insertion hole, and the insertion rod is adsorbed on the magnet.

7. The filter element assembly according to claim 1, characterized in that: There are four positioning members, and the four positioning members are symmetrically arranged on the frame member in pairs.

8. Flat plate filter, characterized in that: It comprises an outer frame and a filter element assembly according to any one of claims 1 to 7, wherein an embedding groove is provided in the outer frame, and the side of the frame member is arranged in the embedding groove.

9. The flat plate filter according to claim 8, characterized in that: A rib plate is provided on one side of the outer frame close to the non-woven fabric layer.

10. The flat plate filter according to claim 8, characterized in that: The outer frame is a bending structure.

Images