TWM650322U - Bag filter with bag-pressing upper cover - Google Patents

Abstract

This creation is a bag filter with a bag-type upper cover, which includes a casing, a support net and a filter bag. The casing includes a casing and an upper cover. The upper cover can move relative to the casing to open or close the casing, and includes a cover. The body and the bag pressing part, the cover body and the bag pressing part are an integral component. When in use, the support net and the filter bag are placed inside the casing in sequence. When the upper cover is closed, the bag pressing part of the upper cover will support the opening edge of the net. And the bag edge of the filter bag is pressed against the casing. Compared with the existing bag filter machine that uses an additional bag press, this invention can directly close the upper cover through the bag press part of the upper cover that is an integral component with the cover body. The fixed support net and filter bag can reduce the installation and disassembly work time, and at the same time improve the stability of the fixed support net and filter bag, making them less susceptible to the impact of fluid.

Description

Bag filter with press bag upper cover

The invention relates to a filter, in particular to a bag filter machine with a bag-type upper cover.

The filter system can be used to separate impurities in the fluid from the fluid and is widely used in the purification of water and gas. Filters are classified into many categories based on appearance or function. One of the filters is a bag filter, also known as bag filter. The filter is filtered by a filter bag in a sealed body, which is easy to replace.

For example, Figure 5 shows an existing bag filter machine, which roughly includes a shell 90, a support net 80 and a filter bag 70. The outer shell 90 includes a shell 91 and an upper cover 92. When in use, the support net is 80. The filter bag 70 is installed into the casing 91 in sequence, and then the upper cover 92 is closed. As shown in Figure 6, through the side inlet 93 connected to the casing 91 or a side of the upper cover 92 The pipeline at the top inlet 94 inputs fluid into the housing 91, allowing the fluid to be filtered through the filter bag 70, and finally the filtered fluid flows out from the outlet of the housing 91; among them, existing bag filters may have fluid backwash. If this happens, in order to prevent the filter bag 70 from being displaced due to the impact force when the fluid backflushes or the initial fluid input, the area where the fluid can enter the filter bag 70 is reduced, and the fluid may not even be filtered through the filter bag 70 The bag filter directly flows out from the outlet of the housing 91. Therefore, the existing bag filter also includes a bag press 60. The bag press 60 includes a connected spring 61 and a bag press frame 62. Between the support network 80 and After the filter bag 70 is placed in the housing 91 in sequence, the bag press 60 is placed so that the bag press frame 62 presses the bag edge 71 of the filter bag 70 and the opening edge 81 of the support net 80 against the bag press 60 . A resisting edge 95 of the housing 91 is then pressed against the spring 61 after the upper cover 92 is closed, so that the bag pressing frame 62 and the resisting edge 95 jointly clamp the bag edge 71 and the opening edge 81. In this way, the filter bag 70 and the support net 80 can be prevented from being displaced due to fluid impact force.

However, existing bag filter machines using the bag press 60 have the following shortcomings: First, due to the additional provision of the bag press 60, the time taken to install or disassemble the filter bag 70 will inevitably be delayed. Long, in addition, since the filter bag 70 and the support net 80 are pressed and fixed by the independent bag press 60, when the fluid is input into the housing 91, the bag press 60 may be damaged due to the impact force of the fluid. The filter bag 70 and the support net 80 are displaced, so that the function of fixing the filter bag 70 and the support net 80 is affected or fails. It can be seen that the existing bag filter machine has room for improvement and advancement.

In order to solve the problem that the existing bag filter machine uses an additional bag press to fix the filter bag, which takes a long time to install and disassemble, and is easy to shift due to impact force when the fluid is input, causing the function to be affected, this paper The purpose of the creation is to propose a bag filter with a pressed bag type upper cover that can reduce the installation and disassembly work time and can fix the filter bag more stably.

The bag filter machine with a bag-type upper cover proposed by this invention to solve the technical problem includes: a casing, which includes a casing and an upper cover. The upper cover can move relative to the casing to open or close the casing. , and the upper cover includes a cover body and a press bag part, the cover body and the press bag part are an integral component; a support net that can be accommodated inside the casing and includes an opening edge; and a A filter bag that can be accommodated inside the casing and can be attached to the inside of the support net. The filter bag includes a bag edge; when the upper cover is closed, the bag pressing portion of the upper cover will The opening edge of the support net and the bag edge of the filter bag are pressed against the shell, so that the opening edge and the bag edge are jointly clamped by the bag pressing part and the shell.

In the bag filter machine with a bag-type upper cover, the casing includes a resisting portion connected to the inner wall of the casing. When the upper cover is closed, the bag-pressing portion extends into Inside the casing, press the opening edge and the bag edge against the resisting portion of the casing.

In the bag filter with a bag-type upper cover, the abutment portion is a flange, which is annular and extends radially from the inner wall of the housing. The bag-pressing portion Contains a torus, When the upper cover closes the casing, the opening edge of the support net and the bag edge of the filter bag are clamped between the annular flange and the annular surface of the bag pressing part.

The bag filter with a bag-pressing upper cover, wherein the cover body is provided with an inlet, the bag-pressing portion extends from one surface of the cover body and is in the shape of a hollow column, and the bag-pressing portion is located away from the cover body An opening is provided at one end, and the opening is connected with the inlet. When the upper cover closes the casing, the opening is connected with the inside of the casing.

In the bag filter with a bag-type upper cover, the support net includes an outer net part and an inner net part that are spaced apart. The inner net part surrounds a space and is surrounded by the outer net part. The bottom end of the inner mesh part and the bottom end of the outer mesh part are connected through an annular part. The support mesh includes a plurality of through holes, and the plurality of through holes are distributed between the inner mesh part and the outer mesh part.

In the bag filter with a bag-type upper cover, the inner mesh portion is tapered from the bottom of the support mesh toward the top of the support mesh.

The efficiency improvements that can be obtained by the technical means of this creation are:

1. In the bag filter of the present invention with a bag-pressing upper cover, the cover body and the bag-pressing part of the upper cover are an integral component. When the upper cover closes the casing, the support net can be directly fixed with the bag-pressing part. This filter bag does not need to be equipped with an additional bag press like the existing bag filter machine, which can reduce the installation and disassembly work time and improve the efficiency of replacing the filter bag.

2. Compared with the existing bag filter that is fixed by an independent bag press, which is easily unable to securely fix the support net and filter bag due to the impact of fluid input, this invention utilizes the upper cover that is an integral component with the cover body. The bag pressing portion presses and fixes the support net and the filter bag, which can effectively improve the stability of fixing the support net and the filter bag, and is less susceptible to impact force when fluid is input.

10:Chassis

11: Shell

111: Resistance Department

12: Upper cover

121: Cover

122: Bag pressing department

123:Entrance

124:Open your mouth

125:Torus

20:Support network

21:Opening edge

22:Through hole

23:External Network Department

24:Intranet Department

25: Ring part

30:Filter bag

31: bag edge

60: Bag press

61:Spring

62: Bag press stand

70:Filter bag

71: Bag edge

80:Support network

81:Opening edge

90: Shell

91: Shell

92: Upper cover

93:Side entrance

94:Top entrance

95:Rely on fate

Figure 1 is an exploded view of a preferred embodiment of this invention.

Figure 2 is a side cross-sectional view of the support net according to the preferred embodiment of the present invention.

Figure 3 is a side cross-sectional view of the preferred embodiment of this invention.

Figure 4 is a side cross-sectional view of the preferred embodiment of the invention in use.

Figure 5 is an exploded view of an existing bag filter.

Figure 6 is a side cross-sectional view of an existing bag filter.

In order to understand the technical characteristics and practical effects of this invention in detail, and to realize it according to the content of the invention, the preferred embodiment as shown in the figure is further described in detail as follows:

As shown in Figure 1 , a bag filter with a bag-type upper cover is a preferred embodiment of the present invention. It includes a casing 10 , a support net 20 and a filter bag 30 . The support net 20 and the filter bag 30 can It is installed inside the casing 10 in sequence. When the fluid is introduced into the casing 10, the filter bag 30 can be used for filtering. The support net 20 can support and stabilize the filter bag 30 to prevent the filter bag 30 from swinging randomly. This may result in a reduced service life or reduced filtering effect.

As shown in FIGS. 1 and 3 , the casing 10 includes a casing 11 and an upper cover 12 . A space for accommodating the support net 20 and the filter bag 30 for filtering is formed in the casing 11 . The body 11 includes a resisting portion 111, which is connected to the inner wall of the housing 11. The bottom or side wall of the housing 11 can be provided with an outlet as needed, and the bottom of the housing 11 can be designed as The common tapered structure is omitted in the drawings of this creation because the bottom and outlet of the housing 11 are conventional designs of bag filters; the upper cover 12 can move relative to the housing 11 to open or The casing 10 is closed. The upper cover 12 includes a cover body 121 and a pressing bag part 122. The cover body 121 and the pressing bag part 122 are an integral component. The pressing bag part 122 closes the machine on the upper cover 12. The shell 10 is used to press and fix the support net 20 and the filter bag 30 .

Among them, the so-called "the upper cover 12 closes the casing 10" in this creation means that the upper cover 12 will tightly cover the opening at the top of the casing 11, so that the casing 10 is sealed and will not be affected by fluid impact. It can be easily opened by a blow or other external force. For example, in the preferred embodiment of the present invention, when the upper cover 12 covers the opening at the top of the housing 11, the upper cover 12 and the housing 11 are further locked by eye bolts. , in other embodiments, the upper cover 12 and the housing 11 can also be provided with structures that can engage with each other, or the upper cover 12 covers the opening at the top of the housing 11, and the upper cover 12 and the housing 11 interact with each other. A tight fit; in addition, according to the preferred embodiment of the present invention, the upper cover 12 is pivotally connected to the top of the housing 11 and can pivot relative to the housing 11 to cover the opening at the top of the housing 11 or to open from the top of the housing 11. The opening at the top of the casing 11 is lifted up to close or open the casing 10 .

The support net 20 is made of metal and can have a fixed shape. As shown in FIGS. 1 and 2 , the support net 20 includes an opening edge 21 located at the top of the support net 20 and a plurality of through holes disposed therethrough. Hole 22, the plurality of through holes 22 can allow fluid to flow between the inside of the support net 20 and the outside of the support net 20. As shown in Figures 1 and 3, the filter bag 30 includes a bag body and is connected to There is a bag lip 31 on the top of the bag body. The bag body of the filter bag 30 can be made of any one of different materials such as polyester fiber, polypropylene, nylon, etc. depending on the fluid to be filtered. This invention is preferred. The embodiment does not elaborate on the material used for the filter bag 30 .

When the support net 20 and the filter bag 30 are to be placed inside the casing 10 for installation, the support net 20 is first placed, the opening edge 21 of the support net 20 is placed on the abutment portion 111, and then the support net 20 is placed. Insert the filter bag 30, place the bag edge 31 of the filter bag 30 on the opening edge 21 of the support net 20, and place the bag body of the filter bag 30 against the inside of the support net 20, and place it into the support After the net 20 and the filter bag 30 are connected, the upper cover 12 is used to close the casing 10. At this time, as shown in Figure 3, the bag pressing portion 122 of the upper cover 12 will press the opening edge 21 of the support net 20 and the The bag edge 31 of the filter bag 30 is pressed against the resisting portion 111 , so that the opening edge 21 and the bag edge 31 are clamped and fixed by the bag pressing portion 122 and the resisting portion 111 .

After the installation is completed, filtration can be performed through the bag filter with a bag-type upper cover. As shown in Figure 4, after the fluid enters the interior of the casing 10, it will be filtered through the filter bag 30. The filtered fluid passes through The plurality of through holes 22 of the support network 20 flow out from the outlet provided in the housing 11. The process When the fluid is input into the interior of the casing 10 or the fluid backflushes, since the opening edge 21 and the bag edge 31 are clamped by the bag pressing portion 122 and the resisting portion 111, this can be avoided. The support net 20 or the filter bag 30 is deflected and displaced due to the impact force of the fluid.

When the filter bag 30 needs to be replaced due to accumulation of impurities after being used for a period of time, the operation of the bag filter machine with a press bag type upper cover will be stopped first, and after the pressure inside the casing 10 is reduced to a safe range, the remaining When the fluid does not splash outward, the upper cover 12 is lifted up to open the casing 10, and then the filter bag 30 can be directly taken out for replacement, or the support net 20 can be taken out together, and the filter bag 30 can be replaced. The support net 20 is cleaned.

In the bag filter of the present invention with a bag-pressing upper cover, the lid body 121 of the upper cover 12 and the bag-pressing part 122 are an integral component. When the upper cover 12 closes the casing 10, the bag-pressing part 122 can directly press the bag filter. To fix the support net 20 and the filter bag 30, there is no need to install an additional bag press like the existing bag filter machine, which can reduce the installation and disassembly work time, improve the efficiency and convenience of replacing the filter bag 30, and compare with the existing bag filter machine. The bag filter machine is fixed with an independent bag press. It is easy to fail to securely fix the support net and filter bag due to the impact force when the fluid is input. This invention uses the bag press part 122 which is an integral component of the cover 121 to press the bag filter. Fixing the support net 20 and the filter bag 30 against each other can effectively improve the stability of the support net 20 and the filter bag 30 and make them less susceptible to the impact of fluid input.

In the preferred embodiment of the present invention, the bag pressing portion 122 is used in conjunction with the abutment portion 111 connected to the inner wall of the housing 11 to fix the support net 20 and the filter bag 30. In other embodiments, the bag pressing portion The part 122 can also choose to press the opening edge 21 of the support net 20 and the bag edge 31 of the filter bag 30 against the edge of the top opening of the housing 11, or the outer wall of the housing 11, as long as it is in contact with the cover. The bag pressing portion 122 integrated with 121 can press the opening edge 21 and the bag mouth edge 31 against the housing 11, and can also achieve the effect of improving the stability of fixing the support net 20 and the filter bag 30. This invention The advantage of creating the preferred embodiment is that the fixed structure is hidden in the housing 11 so that the bag filter can achieve better sealing performance.

As shown in FIGS. 1 and 3 , in the preferred embodiment of the present invention, further, the abutment portion 111 of the housing 11 is a flange, the flange is annular, and is formed from the inside of the housing 11 The wall extends radially, and the bag pressing portion 122 includes an annular surface 125. As shown in Figure 3, when the upper cover 12 closes the casing 10, the opening edge 21 of the support net 20 and the filter bag 30 The bag lip 31 is clamped between the annular surface 125 of the bag pressing portion 122 and the abutment portion 111 (ie, the annular flange).

In other embodiments, the pressing bag portion 122 and the resisting portion 111 can also adopt different shapes. For example, the resisting portion 111 can be a rib extending from the inner wall of the housing 11 . The bag part 122 may include different structures such as a frame body or a plate body. As long as the upper cover 12 closes the casing 10, the opening edge 21 and the bag edge 31 are directly pressed by the bag pressing part 122 of the upper cover 12. It is fixed against the resisting portion 111. The actual shapes of the resisting portion 111 and the cover 121 are not limited by the preferred embodiment of the present invention. The advantage of the preferred embodiment of the present invention is that through the pressing bag portion The annular annular surface 125 on the 122 is matched with the abutment portion 111 and uses an annular flange to clamp and fix the annular opening edge 21 and the bag lip 31. Compared with the abutment portion 111 and the pressing force of different shapes, For other embodiments of the bag portion 122, the stability of the clamping can be improved, so that the support net 20 and the filter bag 30 can be more firmly maintained in the original position, and it is less likely for fluid to enter the casing. At 10 o'clock, it may be displaced due to the impact force generated during backflushing, allowing the bag filter with a bag-type upper cover to operate stably and normally.

As shown in Figures 1 and 3, in the preferred embodiment of the present invention, the cover 121 is plate-shaped and is provided with an inlet 123. The pressing bag portion 122 extends from one surface of the cover 121. It is hollow cylindrical, and the bag pressing part 122 is provided with an opening 124 at one end away from the cover 121. The opening 124 is connected with the inlet 123. The inlet 123 and the opening 124 are coaxially arranged, and the diameter of the opening 124 is larger than The diameter of the inlet 123 is such that when the upper cover 12 closes the casing 10, the opening 124 is connected to the inside of the casing 10. When using the bag filter with a pressure bag type upper cover, fluid is to be input into the casing 10. When inside, it is connected to the inlet 123 by a pipeline, as shown in Figure 4, so that the fluid can pass through the inlet 123 from the above pipeline and pass through The hollow pressing bag portion 122 finally enters the interior of the casing 10 through the opening 124 so as to flow through the filter bag 30 for filtration.

In other embodiments, the inlet 123 can also be provided on the side of the housing 11 , and the pressing bag portion 122 is provided with a through hole on its outer peripheral surface, or the pressing bag portion 122 can be connected to the cover. The multiple brackets of 121 are matched with the structure of the annular plate connected to the bracket. After the fluid enters through the inlet on the side of the housing 11, it can pass through the through hole on the outer circumferential surface of the pressure bag portion 122 and pass through the opening 124, or Through the space between the above-mentioned brackets and through the opening in the center of the above-mentioned annular plate, one can also enter the interior of the casing 10 and flow through the filter bag 30 for filtering. The advantage of the preferred embodiment of the present invention is that the inlet 123 The coaxial arrangement with the opening 124 allows the fluid to be input directly through the inlet 123, the hollow pressing bag portion 122 and the opening 124. The pressing bag portion 122 will not directly bear the impact force of the fluid input, which can effectively reduce the impact of the fluid input. The wear and tear of the bag pressing part 122 increases its service life.

More specifically, as shown in FIGS. 1 and 3 , the cover 121 is in the shape of a disk, the pressing bag portion 122 is in the shape of a hollow cylinder, and the above-mentioned annular surface 125 is located away from the pressing portion 122 and away from the cover. 121 and surrounds the opening 124. In addition to the annular annular surface 125 and the resisting portion 111, the annular flange can be used to press and fix the opening edge 21 of the support net 20 and the bag of the filter bag 30. In addition to the better clamping stability of the mouth edge 31, the hollow cylindrical bag-pressing portion 122 also has better structural strength.

As shown in Figures 1 and 2, in the preferred embodiment of the present invention, the support network 20 also includes an outer network part 23 and an inner network part 24 that are spaced apart. The inner network part 24 surrounds a space and Surrounded by the outer mesh part 23, and the bottom end of the inner mesh part 24 and the bottom end of the outer mesh part 23 are connected through an annular part 25, a plurality of through holes 22 of the support mesh 20 are distributed in the outer mesh part 23 and the inner mesh part 24, as shown in Figure 4, the bag body of the filter bag 30 can be close to the outer mesh part 23 and the inner mesh part 24. When the fluid flows through the filter bag 30 for filtration, it can Through the through hole 22 located at the outer mesh part 23 or the through hole 22 located at the inner mesh part 24 The through hole 22 finally flows to the outlet provided in the casing 11 and flows out of the casing 10; more specifically, the inner network portion 24 gradually flows from the bottom of the support network 20 toward the top of the support network 20. shrink.

In other embodiments, the support net 20 can also be a common support net for bag filters, adopting a purely groove-like shape, and is not limited by the preferred embodiment of the present invention. The advantages of the preferred embodiment of the present invention That is, by utilizing the spaced outer mesh part 23 and the inner mesh part 24, the bag body of the filter bag 30 can form a zigzag when it is close to the support mesh 20, thereby increasing the area that is in contact with the fluid and performing filtration, and effectively improves filtration. Fluid efficiency.

The above are only preferred embodiments of the present invention and do not impose any formal restrictions on the present invention. Anyone with ordinary knowledge in the technical field can use the present invention without departing from the scope of the technical solution proposed by the present invention. Equivalent embodiments with partial changes or modifications to the technical content disclosed in the creation, and which do not deviate from the content of the technical solution of this creation, still fall within the scope of the technical solution of this creation.

10:Chassis

11: Shell

111: Resistance Department

12: Upper cover

121: Cover

122: Bag pressing department

124:Open your mouth

125:Torus

20:Support network

21:Opening edge

22:Through hole

23:External Network Department

24:Intranet Department

30:Filter bag

31: bag edge

Claims (8)

A bag filter with a bag-type upper cover, which includes: a casing, which includes a casing and an upper cover. The upper cover can move relative to the casing to open or close the casing, and the upper cover includes a cover. body and a bag-pressing part, the cover body and the bag-pressing part are an integral component; a support net that can be accommodated inside the casing and includes an opening edge; and a filter bag that can accommodate Inside the casing and able to abut against the inside of the support net, the filter bag includes a bag edge; wherein, when the upper cover is closed, the bag pressing portion of the upper cover presses the opening edge of the support net and The bag edge of the filter bag is pressed against the shell, so that the opening edge and the bag edge are jointly clamped by the bag pressing part and the shell. The bag filter with a pressed bag type upper cover as claimed in claim 1, wherein the casing includes a resisting portion connected to the inner wall of the casing. When the upper cover is closed, the pressing portion The bag portion extends into the casing and presses the opening edge and the bag edge against the resisting portion of the casing. The bag filter with a bag-type upper cover as described in claim 2, wherein the abutment portion is a flange, the flange is annular and extends radially from the inner wall of the housing, The bag-pressing part includes an annular surface. When the upper cover closes the casing, the opening edge of the support net and the bag edge of the filter bag are clamped between the annular flange and the annular surface of the bag-pressing part. between. The bag filter with a bag-type upper cover according to any one of claims 1 to 3, wherein the cover body is provided with an inlet, and the bag-pressing portion extends from one surface of the cover body to be in the shape of a hollow column , The pressing bag portion is provided with an opening at one end away from the cover body, and the opening is connected with the inlet. When the upper cover is closed on the casing, the opening is connected with the inside of the casing. The bag filter with a pressed bag type upper cover as described in claim 4, wherein the support net includes an outer net part and an inner net part that are spaced apart, and the inner net part surrounds a space and is protected by the outer net part. surrounded by The bottom end of the inner mesh part and the bottom end of the outer mesh part are connected through an annular part. The support mesh includes a plurality of through holes, and the plurality of through holes are distributed between the inner mesh part and the outer mesh part. The bag filter with a bag-type upper cover as described in claim 5, wherein the inner mesh portion is tapered from the bottom of the support mesh toward the top of the support mesh. The bag filter with a pressed bag type upper cover as described in any one of claims 1 to 3, wherein the support net includes an outer net part and an inner net part spaced apart, and the inner net part surrounds a space, And surrounded by the outer mesh part, the bottom end of the inner mesh part and the bottom end of the outer mesh part are connected through an annular part. The support mesh includes a plurality of through holes, and the plurality of through holes are distributed in the inner mesh. department and the extranet department. The bag filter with a bag-type upper cover as described in claim 7, wherein the inner mesh portion is tapered from the bottom of the support mesh toward the top of the support mesh.

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