Filtering equipment

Abstract

The embodiment of the utility model discloses filtering equipment. The filtering equipment comprises a shell, a cover body, a partition plate, a filter bag and a pressing mechanism, the cover body is connected to the shell, and an accommodating space is defined by the cover body and the shell; the partition plate is arranged in the shell, divides the containing space into an upper space and a lower space and is provided with a through hole and a clamping groove part, the through hole is communicated with the upper space and the lower space, and the clamping groove part is arranged around the through hole; the filter bag is arranged in the lower space and is communicated with the upper space through the through hole; the pressing mechanism comprises a gland, a pressing plate and a jacking piece, the gland fixes the bag opening of the filter bag to the edge of the through hole, the end of the pressing plate abuts against the clamping groove part, and at least part of the jacking piece is located between the pressing plate and the gland. The bag opening of the filter bag is pressed in a manner of jacking between the pressing plate and the pressing cover, so that the bag opening of the filter bag can be uniformly pressed, no gap is formed between the filter bag and the partition plate, the precision and the reliability of the whole filter equipment are improved, and meanwhile, the jacking pressure between the pressing plate and the pressing cover is controllable.

Description

Technical Field

[0001] The present application relates to the field of filtering technology, and in particular to a filtering device. Background Art

[0002] Traditional bag filters generally use spring compression or gland rotation compression to compress the bag opening of the filter bag. However, these filter bag compression structures have the disadvantages of insufficient or uneven filter bag compression force and poor reliability. In the spring compression method, the spring will deform when it is compressed, resulting in uneven force around the bag opening of the filter bag and problems such as incorrect force direction. In addition, after a long period of use in the spring compression method, the pressure becomes weak due to the decrease in spring elasticity, resulting in problems such as inability to compress or uneven compression. In the gland rotation compression method, the setting accuracy of the inclined wedge block is not high, and there is a situation where the size between the wedge block and the partition is inconsistent, resulting in uneven compression force. At the same time, the gland rotation compression method is also prone to insufficient compression force or non-compression due to incomplete rotation during operation. The above-mentioned traditional compression methods are prone to the risk of some liquid materials directly short-circuiting without filtration, resulting in problems such as product filtration accuracy not meeting quality requirements or excessive particulate impurities. Utility Model Content

[0003] In order to solve the above-mentioned problem, the present application provides a filtering device, in which the filter bag pressing mechanism can evenly press the bag opening of the filter bag, and has a good filter bag pressing effect.

[0004] To achieve the above objectives, the technical solutions adopted in this application are as follows:

[0005] An embodiment of the present application discloses a filtering device, which includes a shell, a cover, a partition, a filter bag and a clamping mechanism; the cover is detachably connected to the top of the shell, and the cover and the shell form a accommodating space; the partition is arranged in the shell, and the partition divides the accommodating space into an upper space and a lower space, and the partition is provided with a through hole and a slot portion, the through hole connects the upper space and the lower space, and the slot portion is arranged around the through hole; at least part of the filter bag is arranged in the lower space and is connected to the upper space through the through hole; the clamping mechanism includes a pressure cover, a pressure plate and a tightening member, the pressure cover fixes the bag mouth of the filter bag to the edge of the through hole, the end of the pressure plate abuts against the slot portion, at least part of the tightening member is located between the pressure plate and the pressure cover, and the tightening member is used to tighten the pressure cover to the edge of the through hole.

[0006] Furthermore, the top tightening member is a fastener, and a fastening hole is provided at the end of the pressing plate, a part of the fastener is fastened in the fastening hole, and one end of the fastener abuts against the pressure cover.

[0007] Furthermore, the pressing plate includes three end portions distributed along the circumference, and three slot portions are arranged around a through hole.

[0008] Furthermore, a groove portion capable of accommodating at least a portion of the gland is provided at an edge of the through hole.

[0009] Further, the bag opening of the filter bag is located in the groove portion.

[0010] Further, the plane where the partition is located is defined as a preset plane, the direction perpendicular to the partition is defined as a preset direction, the pressure plate is arranged basically parallel to the preset plane, the pressure plate has a first projection on the preset plane along the preset direction, the through hole has a second projection on the preset plane along the preset direction, the area of ​​the second projection is defined as a first area, the area of ​​the overlapping part of the first projection and the second projection is defined as a second area, and the ratio of the second area to the first area is less than or equal to 70%.

[0011] Furthermore, the filtering device also includes an outlet, which is arranged at the lowest point of the lower space.

[0012] Furthermore, the filtering device also includes an inlet, which is arranged on the side wall or cover of the shell, and the inlet is connected to the upper space.

[0013] Furthermore, a hollow portion is provided on the pressing plate, and the pressing cover is in a circular ring shape.

[0014] Furthermore, the filtering device also includes a support frame, which is connected to the partition, at least part of which is arranged in the lower space and communicates with the upper space through the through hole, and at least part of the filter bag is arranged in the support frame.

[0015] In the present application, the bag opening of the filter bag is pressed by the mutual pressing between the pressing plate and the pressing cover, which can ensure that the bag opening of the filter bag is pressed evenly, ensure that there is no gap between the filter bag and the partition, and improve the accuracy and reliability of the entire filtering equipment. At the same time, the pressing pressure between the pressing plate and the pressing cover is controllable and can be adjusted according to actual production needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the longitudinal cross-section structure of a filtering device in one implementation of the present application;

[0017] Figure 2 This is a schematic diagram of a top view of a partition in one implementation of the present application;

[0018] Figure 3 This is a schematic diagram of a top view of the structure after the partition and the clamping mechanism are assembled in one implementation of the present application;

[0019] Figure 4 In one implementation of this application, Figure 3 Schematic diagram of the cross-sectional structure in the AA direction;

[0020] Figure 5 This is a schematic diagram of a top view of a pressure plate in one implementation of the present application;

[0021] Figure 6 This is a structural schematic diagram of a card slot portion in one implementation of the present application;

[0022] Figure 7 This is a schematic diagram of a top view of a partition in another implementation of the present application;

[0023] Figure 8 This is a schematic diagram for showing a first area and a second area in one implementation of the present application;

[0024] Fig. 9 This is a schematic diagram of a top view of a pressure plate in another implementation of the present application;

[0025] Fig.10 In another implementation of this application Figure 3 Schematic diagram of the cross-sectional structure in the AA direction;

[0026] Fig.11 This is a schematic diagram of the longitudinal cross-section structure of a filtering device in another implementation of the present application;

[0027] Fig.12 This is a schematic diagram of the longitudinal cross-section structure of a filtering device in another implementation of the present application;

[0028] Fig.13 This is a schematic diagram of the top view of the structure after the partition and the clamping mechanism are assembled in another implementation of the present application.

[0029] In the figure: filtering device 100, shell 11, cover body 12, partition 13, through hole 131, slot portion 132, snap-in slot 1321, groove portion 133, filter bag 14, clamping mechanism 15, pressure cover 151, pressure plate 152, end 1521, hollow portion 1522, pressing member 153, outlet 16, inlet 17, support frame 18; upper space 101, lower space 102. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the specific implementation manner of the present application will be clearly and completely described below in conjunction with the drawings in the implementation manner of the present application.

[0031] The present application embodiment provides a Figure 1 , Figure 2 , Figure 3 and Figure 4The filter device 100 shown in the figure comprises a housing 11, a cover 12, a partition 13, a filter bag 14 and a pressing mechanism 15. The cover 12 is detachably connected to the top of the housing 11, and the cover 12 and the housing 11 can be enclosed to form a storage space. The partition 13 is arranged in the housing 11, and a plurality of through holes 131 and a card slot 132 are provided on the partition 13. The pressing mechanism 15 is connected to the partition 13, and the pressing mechanism 15 comprises a gland 151, a pressing plate 152 and a top tightening member 153. The partition 13 divides the storage space into an upper space 101 and a lower space 102, and the through hole 131 on the partition 13 serves to connect the upper space 101 and the lower space 102, and the filtrate can enter the lower space 102 from the upper space 101 through the through hole 131. Most of the filter bag 14 is located in the lower space 102, and the top of the filter bag 14 (i.e., the bag opening of the filter bag 14) is fixed to the edge of the through hole 131. The filter bag 14 is connected to the upper space 101 through the through hole 131. During filtration, the filtrate in the upper space 101 enters the filter bag 14 located in the lower space 102 from the through hole 131 and is filtered. Whether the bag opening of the filter bag 14 can be tightly pressed to the edge of the through hole 131 has a significant impact on the filtering effect of the filtering device 100. If the bag opening of the filter bag 14 and the edge of the through hole 131 cannot be tightly pressed, and a gap appears between the bag opening of the filter bag 14 and the edge of the through hole 131, the filtrate will pass through the filter bag 14 directly into the lower space 102 through the gap, which will cause the problem of reduced filtering accuracy and excessive impurities in the filtrate. Therefore, in the filtering device 100, the edge of the filter bag 14 needs to be tightly pressed to the edge of the through hole 131 to ensure that the filtrate does not enter the lower space 102 without being filtered. The slot portion 132 on the partition 13 is arranged around the through hole 131. The slot portion 132 is mainly used to fix the pressing mechanism 15. With the cooperation of the slot portion 132 and the pressing mechanism 15, the bag opening of the filter bag 14 is tightly pressed to the edge of the through hole 131. The pressing mechanism 15 includes a pressure cover 151, a pressure plate 152 and a pressing member 153. The function of the pressure cover 151 is to fix the bag opening of the filter bag 14 to the edge of the through hole 131. The pressure cover 151 can press the bag opening of the filter bag 14 to the edge of the through hole 131 in a full circle in the form of surface contact. Compared with the point contact or partial contact pressing method, the full surface contact method can better press the bag opening of the filter bag 14 to the edge of the through hole 131, avoiding the problem of a gap between the bag opening of the filter bag 14 and the edge of the through hole 131 after a period of filtering, and further improving the tightness of the bag opening of the filter bag 14 and the edge of the through hole 131. The end 1521 of the pressing plate 152 abuts against the slot 132, and the pressing plate 152 and the slot 132 abut against each other can better fix the pressing plate 152 on the partition 13.The pressing plate 152 and the slot 132 are arranged in a detachable form. The detachable pressing plate 152 can increase the convenience of taking and placing the filter bag 14. After the pressing plate 152 is removed from the slot 132, the filter bag 14 can be more conveniently taken out from the lower space 102 through the through hole 131. The pressing member 153 is arranged between the gland 151 and the pressing plate 152. The pressing member 153 pushes the gland 151 and the pressing plate 152 apart. Under the action of the pressing member 153 and the pressing plate 152, the gland 151 can be better pressed to the edge of the through hole 131, and then the gland 151 can also better press the bag mouth of the filter bag 14 to the edge of the through hole 131, avoiding the occurrence of a gap between the filter bag 14 and the partition 13, and improving the reliability and filtering efficiency of the filtering device 100.

[0032] As an implementation method, the tensioning member 153 can be any component that can be arranged between the gland 151 and the pressure plate 152 and push the gland 151 and the pressure plate 152 apart in opposite directions. The tensioning member 153 can be a spring. The tensioning member 153 can be a component that is tightened by air pressure after being filled with gas, such as an airbag. The tensioning member 153 can also be a component that is tightened by hydraulic pressure after being filled with liquid. The tensioning member 153 can also be a fastener. In the case where the tensioning member 153 is a fastener, a fastening hole is provided at the end 1521 of the pressure plate 152, a part of the fastener is fastened in the fastening hole, and one end of the fastener abuts against the gland 151. A fastening thread is provided in the fastening hole of the end 1521 of the pressing plate 152, and a part of the fastener is fixed to the pressing plate 152 through the fastening thread. The end of the fastener away from the pressing plate 152 abuts against the gland 151. The part of the fastener located between the pressing plate 152 and the gland 151 pushes the gland 151 and the pressing plate 152 apart from each other, thereby achieving the purpose of pressing the gland 151 to the edge of the through hole 131. Specifically, the fastener can be a bolt, which is screwed into the fastening hole of the end 1521 of the pressing plate 152 and makes the end 1521 of the bolt abut against the gland 151. Further tightening the bolt can make the gland 151 pressed to the edge of the through hole 131, and at the same time, the degree of screwing in of the bolt or the tightening torque of the bolt can be controlled to control the size of the bolt's pressing force on the gland 151. In the clamping mechanism 15, a plurality of ends 1521 are usually provided on the pressing plate 152 to achieve the purpose of pressing the gland 151 from multiple directions. In actual application, the tightening torque of the bolts on each end 1521 can be controlled separately to improve the uniformity of the clamping force acting on the pressure cover 151, ensuring that the entire pressure cover 151 can be tightly pressed to the edge of the through hole 131, thereby improving the reliability and filtering effect of the filtering device 100.

[0033] As a way to achieve this, Figure 5As shown, the pressing plate 152 includes three ends 1521 distributed along the circumference, and three corresponding slots 132 are provided around a through hole 131. The three ends 1521 of the pressing plate 152 cooperate with the three slots 132, so that the pressing plate 152 is subjected to more uniform force during the tightening process. The pressing plate 152 cooperates with the partition 13 through three contact points to form a triangular fixed structure, and the stability of the triangle is improved to ensure that the entire pressing plate 152 is subjected to uniform force and reliability. At the same time, only three ends 1521 are provided on the pressing plate 152, and the pressing plate 152 and the partition 13 are connected to each other through the three ends 1521 and the corresponding slots 132, which can also avoid the problem of the slow flow rate of the filtrate caused by excessive shielding of the through hole 131 by the pressing plate 152 covering more space.

[0034] As an implementation method, the specific structure of the slot portion 132 can be as follows: Figure 6 As shown, the card slot portion includes a card slot 1321 that allows one end of the pressing plate 152 to be inserted. The card slot 1321 can be as shown in FIG. Figure 6 The structure shown is a structure with only one side opening, and the clamping groove can also be a structure with openings on both sides. During the installation of the pressing plate 152, the end of the pressing plate 152 is screwed into the clamping groove 1321 from the open side. On the partition 13, the openings in the three clamping grooves 132 are all arranged in the same direction. During the connection process between the pressing plate 152 and the clamping groove 132, the ends of the pressing plate 152 can be screwed into the clamping grooves 1321 of the corresponding clamping grooves 132 together.

[0035] As a way to achieve this, Figure 7 As shown, the edge of the through hole 131 is provided with a groove portion 133 capable of accommodating at least part of the gland 151. When the edge of the through hole 131 is flush with the other parts of the partition 13, when the gland 151 is pressed against the edge of the through hole 131, the edge of the gland 151 will be higher than the partition 13, and a step portion will be generated between the edge of the gland 151 and the partition 13 due to the height difference. Although the step portion is small in size, it will still affect the flow rate of the filtrate, and may even cause part of the filtrate to remain in this area, affecting the filtration efficiency. After the groove portion 133 is provided at the edge of the through hole 131, the height of the step portion formed between the edge of the gland 151 and the partition 13 can be reduced, and even the height difference between the edge of the gland 151 and the partition 13 can be eliminated. Solve the problem of reduced flow rate of the filtrate and residual filtrate caused by the step portion formed by the height difference between the edge of the gland 151 and the partition 13. In addition, after a groove portion 133 matching the size and shape of the pressure cover 151 is set at the edge of the through hole 131, it can also provide a guiding function for the installation of the pressure cover 151, thereby improving the efficiency and accuracy of the installation of the pressure cover 151.

[0036] As an implementation method, the bag opening of the filter bag 14 is located in the groove portion 133. The bag opening of the filter bag 14 is arranged in the groove portion 133, which makes it easier for the pressure cap 151 to press the bag opening of the filter bag 14. The bag opening of the filter bag 14 is arranged at a position not exceeding the groove portion 133, which can prevent the bag opening of the filter bag 14 from being damaged by the impact of the filtrate. At the same time, the bag opening of the filter bag 14 is completely arranged in the groove portion 133, which can also enable the pressure cap 151 to completely press the bag opening of the filter bag 14, avoiding the problem of gaps in the bag opening of the filter bag 14 when it cannot be pressed tightly, resulting in incomplete filtration.

[0037] As an implementation method, the plane where the partition 13 is located is defined as the preset plane, the direction perpendicular to the partition 13 is defined as the preset direction, the pressing plate 152 is arranged substantially parallel to the preset plane, the pressing plate 152 has a first projection on the preset plane along the preset direction, the through hole 131 has a second projection on the preset plane along the preset direction, and the area of ​​the second projection is defined as the first area (i.e. Figure 8 The area of ​​the area where the first projection and the second projection overlap is defined as the second area (i.e. Figure 8 The ratio of the second area to the first area is less than or equal to 70%. In the filtering device 100, the pressing plate 152 is basically arranged above the through hole 131. The pressing plate 152 will shield the through hole 131 to a certain extent, and the pressing plate 152 will affect the path of the filtrate entering the through hole 131. Although there is still a certain distance between the pressing plate 152 and the through hole 131, when the area occupied by the pressing plate 152 itself is too large, it will inevitably affect the flow rate of the filtrate entering the through hole 131, and even hinder the filtrate from entering the through hole 131 to complete the filtration process. Under the condition of ensuring the strength of the pressing plate 152 itself and the reliability of the connection between the pressing plate 152 and the partition 13, appropriately reducing the area of ​​the pressing plate 152 can reduce the influence of the pressing plate 152 on the flow rate of the filtrate and improve the filtration efficiency. The first area is the area of ​​the through hole 131, and the second area is the projected area of ​​the overlapping portion of the pressing plate 152 and the through hole 131. The portion where the second area is located blocks the through hole 131, and this portion will hinder the process of the filtrate passing through the through hole 131 and entering the filter bag 14. If the portion where the second area is located is too large, it may even cause the filtration process to fail to proceed smoothly. When the ratio of the second area to the first area is less than 70%, it will basically not have a significant impact on the entire filtration process, and the filtration process can still proceed smoothly. Under the premise of ensuring the strength of the pressing plate 152, reducing the area occupied can improve the efficiency of the filtration process, and can also reduce the manufacturing cost of the filtration device 100.

[0038] As a way to achieve this, Fig. 9As shown, a hollow portion 1522 is provided on the pressing plate 152. In order to further ensure or improve the filtering efficiency and reduce the problem of reduced flow rate of the filtrate to be filtered due to the setting position of the pressing plate 152, a corresponding hollow portion 1522 can be provided on the pressing plate 152 to reduce the shielding area of ​​the through hole 131 by the pressing plate 152. The hollow portion 1522 can be provided at any position of the pressing plate 152, can be provided at the edge of the pressing plate 152, or can be provided at the center of the pressing plate 152. The setting position of the hollow portion 1522 only needs to ensure that the strength of the pressing plate 152 and the connection strength between the pressing plate 152 and the slot portion 132 are not reduced.

[0039] As a way to achieve this, Fig.10 As shown, the filter device 100 further includes a support frame 18, which is connected to the partition 13, at least part of the support frame 18 is arranged in the lower space 102 and communicates with the upper space 101 through the through hole 131, and at least part of the filter bag 14 is arranged in the support frame 18. In the filter device 100, after filtration, the filtrate flows out of the filter bag 14 into the lower space 102, while the filter residue is left in the filter bag 14. As the filtration process proceeds, more and more filter residues are in the filter bag 14, and the filter bag 14 is subjected to a downward pulling force due to gravity by the filter residues. This pulling force will increase the difficulty of the pressing mechanism 15 to press the bag mouth of the filter bag 14, and even cause the filter bag 14 to fall off. The support frame 18 is arranged below the partition 13, and the filter bag 14 is arranged in the support frame 18, and the support frame 18 can play a role in supporting the filter bag 14. After a period of filtering, when there is too much filter residue in the filter bag 14, the support frame 18 can support the filter bag 14 to prevent the bag opening of the filter bag 14 from falling off from between the pressing mechanism 15 and the partition 13. In addition, after the support frame 18 is provided, the filter residue carrying capacity of the filter bag 14 can be increased, the number of times the filter bag 14 is replaced can be reduced, and the production efficiency of the filtering device 100 can be improved.

[0040] As a way to achieve this, Fig.11 and Fig.12 As shown, the filter device 100 also includes an outlet 16. Providing the outlet 16 in the filter device 100 can improve the convenience of obtaining the filtrate from the filter device 100, and can also make the filtrate discharged from the filter device 100 as soon as possible, thereby improving the filtration efficiency and reducing the workload of the operator during the filtration process.

[0041] As a way to achieve this, Fig.11 and Fig.12 As shown, the filter device 100 further includes an inlet 17, which is disposed on the side wall of the housing 11 or the cover 12, and is communicated with the upper space 101. The inlet 17 is disposed in the filter device 100, so that the filtrate can be continuously provided to the filter device 100, thereby realizing a continuous and continuous filtering process.

[0042] As an implementation method, the gland 151 is annular. As long as the shape of the gland 151 matches the shape of the through hole 131, the gland 151 can be any annular structure that can press the bag opening of the filter bag 14. Usually, the through hole 131 is circular, and the gland 151 is also correspondingly circular to match the through hole 131.

[0043] As a way to achieve this, Fig.13 As shown, three through holes 131 are evenly arranged on the partition 13, three slots 132 are arranged around each through hole 131, and a groove 133 is arranged at the edge of each through hole 131. A corresponding number and shape of pressing mechanisms 15 are arranged corresponding to each through hole 131. By increasing the number of through holes 131 in the partition 13, the filtering amount per unit time of the filtering device 100 can be increased, the production capacity of the filtering device 100 can be increased, and the filtering efficiency can be improved.

[0044] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. A filtering device, characterized in that: include: case; A cover body, the cover body is detachably connected to the top of the shell body, and the cover body and the shell body are enclosed to form a receiving space; A partition, the partition is arranged in the shell, the partition divides the accommodating space into an upper space and a lower space, the partition is provided with a through hole and a slot portion, the through hole communicates the upper space and the lower space, and the slot portion is arranged around the through hole; a filter bag, at least a portion of which is disposed in the lower space and communicates with the upper space through the through hole; The clamping mechanism includes a pressure cover, a pressure plate and a tightening member. The pressure cover fixes the bag opening of the filter bag to the edge of the through hole. The end of the pressure plate abuts against the slot. At least part of the tightening member is located between the pressure plate and the pressure cover. The tightening member is used to tighten the pressure cover to the edge of the through hole.

2. The filtering device according to claim 1, characterized in that: The top fastening member is a fastener, and a fastening hole is provided at the end of the pressing plate. Part of the fastener is fastened in the fastening hole, and one end of the fastener abuts against the pressure cover.

3. The filtering device according to claim 1, characterized in that: The pressing plate comprises three end portions distributed along the circumference, and three clamping groove portions are arranged around one of the through holes.

4. The filtering device according to claim 1, characterized in that: The edge of the through hole is provided with a groove portion capable of accommodating at least a portion of the gland.

5. The filtering device according to claim 4, characterized in that: The bag opening of the filter bag is located in the groove portion.

6. The filtering device according to claim 1, characterized in that: The plane where the partition is located is defined as a preset plane, the direction perpendicular to the partition is defined as a preset direction, the pressure plate is basically arranged parallel to the preset plane, the pressure plate has a first projection on the preset plane along the preset direction, the through hole has a second projection on the preset plane along the preset direction, the area of ​​the second projection is defined as a first area, the area of ​​the overlapping part of the first projection and the second projection is defined as a second area, and the ratio of the second area to the first area is less than or equal to 70%.

7. The filtering device according to claim 1, characterized in that: The filtering device further comprises an outlet, and the outlet is arranged at the lowest point of the lower space.

8. The filtering device according to claim 1, characterized in that: The filtering device further comprises an inlet, which is arranged on the side wall of the shell or the cover, and the inlet is communicated with the upper space.

9. The filtering device according to claim 1, characterized in that: The pressing plate is provided with a hollow portion, and the pressing cover is in a circular ring shape.

10. The filtering device according to claim 1, characterized in that: The filtering device further comprises a support frame connected to the partition, at least a portion of the support frame is disposed in the lower space and communicates with the upper space through the through hole, and at least a portion of the filter bag is disposed in the support frame.

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