JP2018062135A - Casing structure of polymer filter device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a force applied to a lid portion as compared with a conventional technique, to reduce a weight of a lid part and to improve a workability, and to facilitate an interior cleaning of a casing and to perform promptly a replacement work in a field.SOLUTION: A cylindrical space 13 with a filtration means 30 inserted therein has a top end plate 50 and a bottom end plate 40. The bottom end plate 40 has an inlet communication passage 41. The top end plate 50 has an outlet communication passage 51. A portion of the top end plate 50 which is in close contact with a communication passage 14 of the cylindrical space 13 is formed in a tapered outer surface 52. The top end plate 50 and the bottom end plate 40 are connected via a connecting member 80 which is inserted in the communication path 14 of the cylindrical space 13. When exchanging the filtration means 30, the top end plate 50, the filtration means 30, the connecting member 80 and the bottom end plate 40 are pulled out integrally.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a casing structure of a polymer filter device that can reduce the weight of a lid and improve workability, and can easily and quickly replace a filtering means on site.

As for the conventional polymer filter device, as shown in FIGS. 13 and 14, a lid 110 is fixed to the opening 103 a of the cylindrical space 103 in the casing 100 with a bolt 111. A filtering means 120 is mounted in the communication path 104 of the cylindrical space 103 coaxially with the axial direction of the cylindrical space 103. The filtering means 120 is composed of a bottomed filter cylinder, the reinforced porous cylinder has a right cylindrical shape, and a cylindrical screen 121 is mounted on the outer periphery (or inner periphery) thereof. An inlet 101 is formed on the upstream side of the casing 100 and an outlet 102 is formed on the downstream side. The inlet connecting portion 101a and the outlet connecting portion 102a are attached to the casing 100 and connected to the production line.
A high-viscosity fluid (−300 ° C.) and a high-viscosity fluid enters the inlet passage 105 from the production line via the inlet 101, is filtered by the cylindrical screen 121 from the filter chamber, and is collected in the inner passage 122. The next step is entered via the outlet 102 communicating with the outlet passage 106. Since the fluid entering the filter chamber overcomes the filtration resistance of the cylindrical screen 121, it becomes a high pressure, which is applied to the entire surface area of the outlet end plate and a very large force is applied to the lid 110, resulting in a large wall thickness as shown in the figure. In order to tighten this, a large number of bolts 111 having a large diameter are required. For example, in the case of FIG. 13, when the inlet pressure p1 = 30 MPa, the force applied to the lid 110 is 272 tons, and the bolt 111 is M36 × 16. Therefore, the weight of the lid 110 is 315 kg, and a large work amount is required for disassembling or assembling this portion.

In the conventional polymer filter device, when replacing the clogged cylindrical screen 121 of the filtering means 120, as a procedure, first, the fluid in the production line is stopped, and the inlet connection portion 101a and the outlet connection portion 102a are removed. Next, the bolt 111 is removed, and the filtering means 120 and the lid 110 are lifted upward by a crane or the like (see FIG. 14). In this case, there is a problem that a large force is required for fishing because the viscous resistance of the fluid is large between the filtering means 120 and the casing 100.
Further, as shown in FIG. 14, a lot of fluid (residual liquid) remains on the inner wall surface of the casing 100 and around the filter chamber. Further, they are solidified by contact with air and are difficult to remove. Further, the fluid also drips from the filtering means 120 and the lid 110 suspended outside the machine, and the vicinity is soiled. In the case of harmful fluids, it may damage objects and people.
From the above, since it is difficult to replace the filtering means 120 at the production site, the entire filter is moved to another place, and the completely cleaned filter that is waiting is connected to the production line and restarted. Accordingly, one or a plurality of standby filters are required, resulting in an increase in cost. There is a problem that the stop time of the production line becomes long (it may take several hours) and a lot of losses such as production amount and energy labor occur.

  On the other hand, as for the prior art of the polymer filter device aiming at facilitating the attachment and replacement to the polymer flow path, for example, the following inventions have been proposed.

JP 2005-113340 A (Patent Document 1) aims to provide a prefilter that is easy to attach to and exchange with a polymer flow path and is excellent in the uniformity of heating and heat retention of a molten polymer. A polymer filter device for filtering a molten polymer, a “polymer filter device” is proposed which is provided with a seat to which an inflow hole and an outflow hole for molten polymer and a pressing rod are attached on a side surface portion thereof. ing.

Japanese Patent Application Laid-Open No. 2006-161222 (Patent Document 2) aims to provide a molten polymer filter device that can be easily attached to or exchanged with a molten polymer flow path and further contributes to an improvement in productivity. A cylindrical housing having a heater and a filter pack that is removably inserted into the housing from above, and an inflow hole and an outflow hole connected to the molten polymer transfer pipe are provided on one side of the housing A pressing means for pressing the filter pack is provided on the opposite side surface, an inflow hole and an outflow hole are provided on the side surface of the filter pack so as to correspond to the inflow hole and the outflow hole on the housing side, and the filter pack is disposed on the bottom side. A "molten polymer filter device" has been proposed that interposes the inflow holes with the housing and spacers that align the outflow holes. To have.

JP 2005-113340 A JP 2006-161222 A

However, the above-described prior art is not intended to reduce the size and weight of the lid greatly, and to reduce the diameter and quantity of the fastening bolts and facilitate the disassembly or assembly of the lid. It is difficult to greatly reduce the amount of work being done.
Therefore, the present invention reduces the force applied to the lid portion compared to the prior art, reduces the weight of the lid portion and improves the workability, and facilitates internal cleaning of the casing, enabling quick replacement work on site. It is an object of the present invention to provide a casing structure of a polymer filter device that has been made possible.

  In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that a cylindrical space is provided in the casing, an outlet passage and an inlet passage are formed on the top side and the bottom side of the casing, and the cylindrical shape is provided. Filtration means is inserted in the axial direction from the top opening of the space and fixed to the communication passage in the cylindrical space, and the top end plate and the bottom end plate are provided on the top side and the bottom side of the cylindrical space. The top end plate has an outlet communication passage communicating with the outlet passage, and the outlet communication passage is connected to an internal passage of the filtering means, and is connected to the cylindrical space of the top end plate. A portion in close contact with the passage is formed on a conical tapered outer surface inclined with respect to the axial direction of the cylindrical space, and includes a connecting member attached to the communication passage of the cylindrical space, and the top end plate The bottom end plate is connected via the connecting member, and the front end plate When replacing the filtering means, characterized in that withdrawing the connecting member and the bottom end plate and the filtering means and the top portion end plate integrally.

  According to a second aspect of the present invention, a cylindrical space is provided in the casing, an outlet passage and an inlet passage are formed on the top side and the bottom side of the casing, and the shaft extends from the top opening of the cylindrical space. Filtration means is inserted in the direction and fixed to the communication passage in the cylindrical space, and includes a top end plate and a bottom end plate on the top side and the bottom side of the cylindrical space, and the bottom end The plate has an inlet communication passage that communicates with the inlet passage, the top end plate has an outlet communication passage that communicates with the outlet passage, and the outlet communication passage is connected to an internal passage of the filtering means, A portion of the top end plate that is in close contact with the communication path of the cylindrical space is formed on a conical tapered outer surface that is inclined with respect to the axial direction of the cylindrical space, and is connected to the communication path of the cylindrical space. The top end plate and the bottom end plate are It is connected via a serial connection member, when replacing the filtering means, characterized in that withdrawing the connecting member and the bottom end plate and the filtering means and the top portion end plate integrally.

  According to a third aspect of the present invention, the portion of the connecting member according to the first or second aspect that is in close contact with the communication path of the cylindrical space is the communication path of the top end plate of the cylindrical space. It is characterized in that it is formed on the outer surface of a conical taper inclined at the same gradient as the portion in close contact with.

  According to a fourth aspect of the present invention, in the casing structure of the polymer filter device according to the second aspect of the present invention, a cleaning liquid or fluid for injecting minute impurities adhering to a narrow gap of the screen after the filtration means is replaced is injected. And an inflow passage for discharging the cleaning liquid or fluid to the outside of the machine. The inflow passage is formed at an upper part inside the inlet passage, the discharge passage is formed above the outlet passage, and the ceiling In a state where the end plate, the filtering means, the connecting member, and the bottom end plate are integrally pulled up to a predetermined height, the inlet passage communicates with the inlet communication passage via the inflow passage, and the outlet connection. The passage communicates with the discharge passage.

  Further, in the invention according to claim 5, a cylindrical space is provided in the casing, an inlet passage and an outlet passage are formed on the top side and the bottom side of the casing, and the shaft extends from the top opening of the cylindrical space. Filtration means is inserted in the direction and fixed to the communication path in the cylindrical space, and a top end plate is provided on the top side of the cylindrical space, and the top end plate and the filtering means The top portion is connected by a connector, and the bottom member of the filtering means has a bottom communication passage communicating with the outlet passage, the bottom communication passage is connected to an internal passage of the filtering means, and the top end plate A portion in close contact with the communication path of the cylindrical space is formed on a conical tapered outer surface inclined with respect to the axial direction of the cylindrical space, and includes a connecting member attached to the communication path of the cylindrical space, The top end plate and the bottom member of the filtering means are Is connected via imaging member, when replacing the filtering means, characterized in that withdrawing the connecting member and said filtering means and said top portion end plate integrally.

  According to a sixth aspect of the present invention, a cylindrical space is provided in the casing, an inlet passage and an outlet passage are formed on the top side and the bottom side of the casing, and the shaft extends from the top opening of the cylindrical space. Filtration means is inserted in the direction and fixed to the communication passage in the cylindrical space, and a top end plate is provided on the top side of the cylindrical space, and the top end plate is connected to the inlet passage. An inlet communication passage that communicates, a bottom member of the filtration means has a bottom communication passage that communicates with the outlet passage, the bottom communication passage is connected to an internal passage of the filtration means, and the top end plate A portion in close contact with the communication path of the cylindrical space is formed on a conical tapered outer surface inclined with respect to the axial direction of the cylindrical space, and includes a connecting member attached to the communication path of the cylindrical space, The top end plate and the bottom member of the filtering means are connected to each other. Linked via members, when replacing the filtering means, characterized in that withdrawing the connecting member and said filtering means and said top portion end plate integrally.

  According to a seventh aspect of the present invention, the portion of the connecting member according to the fifth or sixth aspect that is in close contact with the communication path of the cylindrical space is a communication path of the top end plate of the cylindrical space. It is characterized in that it is formed on the outer surface of a conical taper inclined at the same gradient as the portion in close contact with.

  Further, in the invention according to claim 8, in the casing structure of the polymer filter device according to claim 6, a cleaning liquid or fluid for injecting a minute impurity adhering to a narrow gap of the screen after replacing the filtering means is injected. An inflow passage, and a discharge passage for discharging the cleaning liquid or fluid to the outside of the machine, the cleaning liquid inflow passage is formed in an upper part inside the inlet passage, and the cleaning liquid discharge passage is formed above the outlet passage. In a state where the top end plate, the filtering means, and the connecting member are integrally raised, the inlet passage communicates with the inlet communication passage via the inflow passage, and the bottom communication passage is It is characterized by communicating with the discharge passage.

  In addition, the invention according to claim 9 is characterized in that the connecting member according to claims 1 to 8 is constituted by a member divided in two in the axial direction.

  Furthermore, in the invention described in claim 10, one or a plurality of push bolts are provided on the top side lid of the cylindrical space according to any one of claims 1 to 9 to increase the degree of adhesion of the tapered surface. To improve the sealing effect.

  As described above, according to the casing structure of the polymer filter device according to the present invention, it is possible to reduce the force applied to the lid, and to reduce the weight of the lid and improve the workability. In addition, the internal cleaning becomes easy, and the replacement work of the filtering means can be easily and quickly performed on site.

It is sectional drawing which shows the 1st Example of this invention. It is explanatory drawing at the time of filtration means replacement | exchange of 1st Example. It is sectional drawing which shows the 2nd Example of this invention. It is explanatory drawing at the time of filtration means replacement | exchange of 2nd Example. It is explanatory drawing at the time of extraction of the filtration means of 2nd Example. It is explanatory drawing at the time of washing | cleaning of the filtration means of 2nd Example. It is sectional drawing which shows the 3rd Example of this invention. It is sectional drawing which shows 4th Example of this invention. It is sectional drawing which shows 5th Example of this invention. It is explanatory drawing at the time of filtration means replacement | exchange of 5th Example. It is explanatory drawing at the time of washing | cleaning of the filtration means of the modification of 5th Example of this invention. It is sectional drawing which shows the 6th Example of this invention. It is sectional drawing of the conventional polymer filter apparatus. It is explanatory drawing at the time of filtration means replacement | exchange of the polymer filter apparatus shown in FIG.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In addition, about each structure of the casing structure of the polymer filter apparatus of this invention, it is not limited to a following example, It can change suitably with a use condition.

  FIG. 1 is a cross-sectional view showing a first embodiment of the present invention, and FIG. 2 is an explanatory view when the filtering means is replaced in the first embodiment. The casing 10 is a steel block shape whose outer shape is a rectangular parallelepiped. As shown in FIG. 1 or FIG. 2, the casing 10 is provided with an inlet 11 and an outlet 12 so as to communicate with the communication path 14 of the cylindrical space 13 from one outer surface thereof and open to the other outer surface. The casing is not limited to the contents illustrated in the following examples (first to sixth examples), and may be a structure in which, for example, a thick steel pipe or a stainless steel pipe is welded. .

  A lid 20 is fixed to the opening 13 a of the cylindrical space 13 in the casing 10 with a bolt 21. A filtering means 30 is mounted in the communication passage 14 of the cylindrical space 13 coaxially with the axial direction of the cylindrical space 13. The filtering means 30 is composed of a bottomed filtering cylinder, the reinforced porous cylinder has a right cylindrical shape, and a cylindrical screen 31 is mounted on the outer periphery (or inner periphery) thereof. An inlet 11 is formed on the upstream side (bottom side) of the side surface of the casing 10 and an outlet 12 is formed on the downstream side (top side). The inlet connection portion 11a and the outlet connection portion 12a are respectively attached to the production line.

  As shown in FIG. 1 or FIG. 2, a top end plate 50 and a bottom end plate 40 are provided on the top side and the bottom side of the cylindrical space 13, respectively. The bottom end plate 40 has an inlet communication passage 41 communicating with the inlet passage 15 at the center position, and the top end plate 50 has an L-shaped outlet communication passage 51 communicating with the outlet passage 16 at the side position. It is formed. Further, the other end portion of the outlet communication passage 51 is connected to the internal passage 32 of the filtering means 30.

  In addition, a connecting member 80 that is slidably mounted is provided on the inner wall of the communication path 14 in the cylindrical space 13. The top end plate 50 and the bottom end plate 40 are connected and fixed via a connecting member 80. In addition, about a connection method, a screw | thread or a key-like other method can be employ | adopted suitably. As a result, the upward force and the downward force due to the fluid pressure are balanced, and the lid portion 20 can be greatly reduced in weight, and the diameter and quantity of the tightening bolts 21 can be reduced. Disassembly and assembly work becomes easier. Moreover, the connection member 80 can be comprised by the member (illustration omitted) divided | segmented into two by the axial direction (vertical). This further facilitates disassembly and assembly work.

  When exchanging the filtering means 30, the fluid in the production line is stopped (however, it is not necessary to remove the inlet connecting portion 11a and the outlet connecting portion 12a), the bolt 21 is removed from the lid 20, and the crane as shown in FIG. The top end plate 50, the filtering means 30, the connecting member 80, and the bottom end plate 40 are pulled out as a whole. Thus, when replacing the filtering means 30, the top end plate 50, the filtering means 30, the connecting member 80, and the bottom end plate 40 are integrated so as to wrap and pull out the internal fluid, Almost no fluid remains on the inner surface of the casing 10. Further, since there is little leakage of the fluid to the outside, dripping, etc., there is little risk when handling harmful fluid. Furthermore, there is little adhesion resistance by the fluid at the time of extraction, and the filtration means 30 can be replaced quickly with a small force. In addition, it is not necessary to remove and attach the connection to the production line, which is conventionally required, and the work efficiency is improved.

  Further, as shown in FIG. 1 or FIG. 2, a conical tapered outer surface 52 that is inclined with respect to the axial direction of the cylindrical space 13 is formed in a portion of the top end plate 50 that is in close contact with the communication path 14 of the cylindrical space 13. Is formed. As a result, the leakage of fluid into and out of the machine is reduced, and leakage prevention to the outside of the machine is simplified. further. Since leakage of the circumferential gap is reduced, problems due to fluid retention can be solved, and resistance when the filtering means 30 is pulled out is reduced. In addition, one or more push bolts 22 can be provided on the lid 20 in order to improve the sealing effect by increasing the degree of adhesion of the tapered surface.

  FIG. 3 is a cross-sectional view showing a second embodiment of the present invention, and FIG. 4 is an explanatory view of the second embodiment when the filtering means is replaced. Similarly to the first embodiment described above, the lid 20 is fixed to the opening 13 a of the cylindrical space 13 in the casing 10 with a bolt 21. A filtering means 30 is mounted in the communication passage 14 of the cylindrical space 13 coaxially with the axial direction of the cylindrical space 13. The filtering means 30 is composed of a bottomed filtering cylinder, the reinforced porous cylinder has a right cylindrical shape, and a cylindrical screen 31 is mounted on the outer periphery (or inner periphery) thereof. An inlet 11 is formed on the upstream side (bottom side) of the side surface of the casing 10 and an outlet 12 is formed on the downstream side (top side). The inlet connection portion 11a and the outlet connection portion 12a are respectively attached to the production line.

  As shown in FIG. 3 or FIG. 4, a top end plate 50 and a bottom end plate 40 are provided on the top side and the bottom side of the cylindrical space 13, respectively. The bottom end plate 40 is formed with an L-shaped inlet communication passage 41 communicating with the inlet passage 15 at the side position, and the top end plate 50 is formed with an L-shaped outlet communicating with the outlet passage 16 at the side position. A communication path 51 is formed. Further, the other end portion of the outlet communication passage 51 is connected to the internal passage 32 of the filtering means 30.

  Similarly to the first embodiment described above, a connecting member 80 that is slidably mounted is provided on the inner wall of the communication path 14 in the cylindrical space 13. The top end plate 50 and the bottom end plate 40 are connected and fixed via a connecting member 80. In addition, about a connection method, a screw | thread or a key-like other method can be employ | adopted suitably. As a result, the upward force and the downward force due to the fluid pressure are balanced, and the lid portion 20 can be greatly reduced in weight, and the diameter and quantity of the tightening bolts 21 can be reduced. Disassembly or assembly work becomes easier. Moreover, the connection member 80 can be comprised by the member (illustration omitted) divided | segmented into two by the axial direction (vertical). This further facilitates disassembly and assembly work.

  When exchanging the filtering means 30, the fluid in the production line is stopped (however, it is not necessary to remove the inlet connecting portion 11a and the outlet connecting portion 12a), the bolt 21 is removed from the lid 20, and the crane as shown in FIG. The top end plate 50, the filtering means 30, the connecting member 80, and the bottom end plate 40 including the L-shaped inlet communication passage 41 are pulled out as a unit. In this way, when replacing the filtering means 30, the L-shaped inlet communication passage 41 and the internal fluid are integrally wrapped and pulled out, so that the internal fluid can be contained when pulling out, as described above. The effect of the first embodiment or more is exhibited, and almost no fluid remains on the inner surface of the casing 10 after being pulled out. Further, since there is little leakage of the fluid to the outside, dripping, etc., there is little risk when handling harmful fluid. Furthermore, there is little adhesion resistance by the fluid at the time of extraction, and the filtration means 30 can be replaced quickly with a small force. In addition, it is not necessary to remove and attach the connection to the production line, which is conventionally required, and the work efficiency is improved.

  Similarly to the first embodiment described above, the portion of the top end plate 50 that is in close contact with the communication path 14 of the cylindrical space 13 has an axial direction of the cylindrical space 13 as shown in FIG. A conical tapered outer surface 52 is formed which is inclined with respect to. As a result, the leakage of fluid into and out of the machine is reduced, and leakage prevention to the outside of the machine is simplified. further. Since leakage of the circumferential gap is reduced, problems due to fluid retention can be solved, and resistance when the filtering means 30 is pulled out is reduced.

  FIG. 5 is an explanatory diagram when the filtering means of the second embodiment is pulled out. When there is no crane or the like when replacing the filtering means 30 or when there is no space, the pusher 200 may be used to push up and pull out as shown in FIG. A push-up rod 201 is inserted into the hole 17 at the bottom of the casing 10 (see FIG. 5A), and the push-up rod 201 is moved upward by hydraulic pressure, pneumatic pressure, screw type or the like to filter the top end plate 50 and the filter. The means 30, the connecting member 80, and the bottom end plate 40 are pulled out as a unit (see FIG. 5B). Thereby, the filtering means 30 can be easily and quickly extracted, which is effective when there is no extraction tool such as a crane.

  FIG. 6 is an explanatory diagram at the time of cleaning the filtering means of the second embodiment. After the filtration means 30 is replaced, an inflow passage 18 for injecting the cleaning liquid or fluid and a discharge passage 19 for discharging the cleaning liquid or fluid to the outside of the machine are provided in order to wash out minute impurities attached to the narrow gap of the cylindrical screen 31. . An inflow passage 18 for injecting cleaning liquid or fluid is formed in the upper part inside the inlet passage 15, and a discharge passage 19 for discharging the cleaning liquid or fluid out of the apparatus is formed above the outlet passage 16. As shown in FIG. 6, in the state where the top end plate 50, the filtering means 30, the connecting member 80, and the bottom end plate 40 are integrally raised to a predetermined height (H), the inlet passage 15 injects the cleaning liquid or fluid. While communicating with the inlet communication path 41 via the inflow path 18, the outlet communication path 51 communicates with the discharge path 19 that discharges the cleaning liquid or fluid to the outside of the apparatus. As a result, impurities are not washed away and mixed into the production stream, and the effect on the product quality is extremely large. In addition, you may wash | clean by inject | pouring another washing | cleaning liquid from another washing | cleaning liquid inflow port 18a.

  FIG. 7 is a sectional view showing a third embodiment of the present invention. Since the configuration of the third embodiment is common to the configuration of the second embodiment described above, the configuration that differs between them will be described. As shown in FIG. 7, the portion (reference numeral 82) in close contact with the communication path 14 of the cylindrical space 13 of the connecting member 80 is in close contact with the communication path 14 of the cylindrical space 13 of the top end plate 50 (reference numeral 52). ) And the conical taper outer surface 82 inclined to the same gradient. Thereby, when exchanging the filtering means 30, the extraction of the top end plate 50, the filtering means 30, the connecting member 80, and the bottom end plate 40 becomes much easier than in the case of a parallel surface, and it is in close contact with the inner surface of the casing 10. Sexuality also improves.

  FIG. 8 is a sectional view showing a fourth embodiment of the present invention. Since the configuration of the fourth embodiment is common to the configurations of the first to third embodiments described above, configurations different from these will be described. In the first to third embodiments, an inlet communication passage 41 communicating with the inlet passage 15 is formed in the bottom end plate 40 and the fluid flows from the center, whereas in the fourth embodiment, it is shown in FIG. Thus, the connection member 80 is different in that an inlet 81 communicating with the inlet passage 15 is formed and the fluid flows from the side. This is not necessarily the center feed type for the inlet flow path, and there is no problem with the side feed type depending on the type of fluid. Rather, the side feed type does not require more time-consuming flow path processing. There are also advantages.

  FIG. 9 is a cross-sectional view showing a fifth embodiment of the present invention, and FIG. 10 is an explanatory view when replacing the filtering means of the fifth embodiment. A lid 20 is fixed to the opening 13 a of the cylindrical space 13 in the casing 10 with a bolt 21. A filtering means 30 is mounted in the communication passage 14 of the cylindrical space 13 coaxially with the axial direction of the cylindrical space 13. The filtering means 30 is composed of a bottomed filtering cylinder, the reinforced porous cylinder has a right cylindrical shape, and a cylindrical screen 31 is mounted on the outer periphery (or inner periphery) thereof. An inlet 11 is formed on the upstream side (top side) of the side surface of the casing 10 and an outlet 12 is formed on the downstream side (bottom side), and the inlet connection part 11a and the outlet connection part 12a are respectively attached to the production line.

  As shown in FIG. 9 or FIG. 10, a top end plate 60 is provided on the top side of the cylindrical space 13 on the top side and the bottom side of the cylindrical space 13. An L-shaped inlet communication passage 61 that communicates with 11 is formed. The bottom member 70 of the filtering means 30 has a bottom communication path 71 that communicates with the L-shaped outlet passage 16, and the bottom communication path 71 is connected to the internal passage 32 of the filtration means 30.

  In addition, a connecting member 80 that is slidably mounted is provided on the inner wall of the communication path 14 in the cylindrical space 13. The top end plate 60 and the bottom member 70 of the filtering means 30 are connected and fixed via a connecting member 80. In addition, about a connection method, a screw | thread or a key-like other method can be employ | adopted suitably. As a result, the upward force and the downward force due to the fluid pressure are balanced, and the lid portion 20 can be greatly reduced in weight, and the diameter and quantity of the tightening bolts 21 can be reduced. Disassembly or assembly work becomes easier. Moreover, the connection member 80 can be comprised by the member (illustration omitted) divided | segmented into two by the axial direction (vertical). This further facilitates disassembly and assembly work.

  When exchanging the filtering means 30, the fluid in the production line is stopped (however, it is not necessary to remove the inlet connecting portion 11a and the outlet connecting portion 12a), the bolt 21 is removed from the lid 20, and the crane as shown in FIG. The top end plate 60, the filtering means 30 (including the bottom member 70), and the connecting member 80 are pulled out as a unit. Thus, when replacing the filtering means 30, the top end plate 50, the filtering means 30 and the connecting member 80 are integrated so as to enclose and pull out the internal fluid, and thus the inner surface of the casing 10 after being pulled out. There is almost no fluid left. Further, since there is little leakage of the fluid to the outside, dripping, etc., there is little risk when handling harmful fluid. Furthermore, there is little adhesion resistance by the fluid at the time of extraction, and the filtration means 30 can be replaced quickly with a small force. In addition, it is not necessary to remove and attach the connection to the production line, which is conventionally required, and the work efficiency is improved.

  In addition, a conical tapered outer surface 62 inclined with respect to the axial direction of the cylindrical space 13 is formed in a portion of the top end plate 60 in close contact with the communication path 14 of the cylindrical space 13 as shown in FIG. It is formed. As a result, the leakage of fluid into and out of the machine is reduced, and leakage prevention to the outside of the machine is simplified. further. Since leakage of the circumferential gap is reduced, problems due to fluid retention can be solved, and resistance when the filtering means 30 is pulled out is reduced. As in the third embodiment described above, the portion of the connecting member 80 that is in close contact with the communication passage 14 of the cylindrical space 13 is the same as the portion of the top end plate 60 that is in close contact with the communication passage 14 of the cylindrical space 13. You may form in the conical taper outer surface inclined in the gradient.

  FIG. 11 is an explanatory view at the time of cleaning the filtering means of the modified example of the fifth embodiment. After the filtration means 30 is replaced, an inflow passage 18 for injecting the cleaning liquid or fluid and a discharge passage 19 for discharging the cleaning liquid or fluid to the outside of the machine are provided in order to wash out minute impurities attached to the narrow gap of the cylindrical screen 31. . An inflow passage 18 for injecting cleaning liquid or fluid is formed in the upper part inside the inlet passage 15, and a discharge passage 19 for discharging the cleaning liquid or fluid out of the apparatus is formed above the outlet passage 16. As shown in FIG. 11, in the state where the top end plate 60, the filtering means 30 (including the bottom member 70) and the connecting member 80 are integrated and pulled up to a predetermined height (H), the inlet passage 15 injects the cleaning liquid or fluid. The inflow passage 18 communicates with the inlet communication passage 61 and the bottom communication passage 71 communicates with the discharge passage 19 that discharges the cleaning liquid or fluid out of the apparatus. As a result, impurities are not washed away and mixed into the production stream, and the effect on the product quality is extremely large. In addition, you may wash | clean by inject | pouring another washing | cleaning liquid from another washing | cleaning liquid inflow port 18a.

  FIG. 12 is a sectional view showing a sixth embodiment of the present invention. Since the configuration of the sixth embodiment is the same as the configuration of the fifth embodiment described above, the configuration that differs between them will be described. In the fifth embodiment, an L-shaped inlet communication passage 61 communicating with the inlet passage 11 is formed in the top end plate 60 and the fluid flows from the center, whereas in the sixth embodiment, it is shown in FIG. Thus, the connection member 80 is different in that an inlet 81 communicating with the inlet passage 15 is formed and the fluid flows in from the side. This is not necessarily the center feed type for the inlet flow path, and there is no problem with the side feed type depending on the type of fluid. Rather, the side feed type does not require more time-consuming flow path processing. There are also advantages. In the sixth embodiment, the top end plate 60 and the top of the filtering means 30 are connected by a connecting tool 90. Further, an L-shaped bottom communication passage 71 communicating with the outlet passage 16 is formed in the bottom member 70 of the filtration means 30, and the other end of the bottom communication passage 71 is connected to the internal passage 32 of the filtration means 30.

  As mentioned above, although the example of embodiment in the case of using as a single cylinder about the casing structure of the polymer filter apparatus concerning this invention was demonstrated, the case where it uses as a double cylinder about the content mentioned above is also considered. Therefore, the casing structure of the polymer filter device according to the present invention can be used as a double cylinder of connected or assembly type in parallel or in series, and other three or more cylinders.

10 Casing 11 Entrance
11a Inlet connection
12 Exit
12a Exit connection
13 Cylindrical space 13a Opening portion 14 Communication passage 15 Inlet passage 16 Outlet passage 17 Hole 18 Inflow passage 18a Washing fluid inlet 19 Discharge passage 20 Lid 21 Bolt 22 Push bolt 30 Filtration means 31 Cylindrical screen 32 Internal passage 40 Bottom end plate 41 Inlet Communication passage 50 Top end plate 51 Outlet communication passage 52 Tapered outer surface 60 Top end plate 61 Inlet communication passage 62 Taper outer surface 70 Bottom member 71 Bottom communication passage 80 Connection member 81 Inlet passage 82 Taper outer surface 90 Connector 100 Casing 101 Inlet 101a Inlet connection portion 102 Outlet 102a Outlet connection portion 103 Cylindrical space 103a Opening portion 104 Communication passage 105 Inlet passage 106 Outlet passage 110 Lid 111 Bolt 120 Filtration means 121 Cylindrical screen 122 Internal passage 200 Pusher 201 Push-up rod

As for the conventional polymer filter device, as shown in FIGS. 13 and 14, a lid 110 is fixed to the opening 103 a of the cylindrical space 103 in the casing 100 with a bolt 111. A filtering means 120 is mounted in the communication path 104 of the cylindrical space 103 coaxially with the axial direction of the cylindrical space 103. The filtering means 120 is composed of a bottomed filter cylinder, and the reinforced porous cylinder is a straight cylinder, and a cylindrical screen 121 is mounted on the outer periphery (or inner periphery) thereof. An inlet 101 is formed on the upstream side of the casing 100 and an outlet 102 is formed on the downstream side. The inlet connecting portion 101a and the outlet connecting portion 102a are attached to the casing 100 and connected to the production line.
A high-viscosity fluid (−300 ° C.) and a high-viscosity fluid enters the inlet passage 105 from the production line via the inlet 101, is filtered by the cylindrical screen 121 from the filter chamber, and is collected in the inner passage 122. The next step is entered via the outlet 102 communicating with the outlet passage 106. Since the fluid entering the filter chamber overcomes the filtration resistance of the cylindrical screen 121, it becomes a high pressure, which is applied to the entire surface area of the outlet end plate and a very large force is applied to the lid 110, resulting in a large wall thickness as shown in the figure. In order to tighten this, a large number of bolts 111 having a large diameter are required. For example, in the case of FIG. 13, when the inlet pressure p1 = 30 MPa, the force applied to the lid 110 is 272 tons, and the bolt 111 is M36 × 16. Therefore, the weight of the lid 110 is 315 kg, and a large work amount is required for disassembling or assembling this portion.

In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that a cylindrical space is provided in the casing, an outlet passage and an inlet passage are formed on the top side and the bottom side of the casing, and the cylindrical shape is provided. Filtration means is inserted in the axial direction from the top opening of the space and fixed to the communication path in the cylindrical space, and the top end plate and the bottom end plate are provided on the top side and the bottom side of the cylindrical space. The top end plate has an outlet communication passage communicating with the outlet passage, and the outlet communication passage is connected to an internal passage of the filtering means, and is connected to the cylindrical space of the top end plate. A portion in close contact with the passage is formed on a conical tapered outer surface inclined with respect to the axial direction of the cylindrical space, and includes a connecting member attached to the communication passage of the cylindrical space, and the top end plate The bottom end plate is connected via the connecting member, and the front end plate When replacing the filtering means, characterized in that withdrawing the connecting member and the bottom end plate and the filtering means and the top portion end plate integrally.

According to a second aspect of the present invention, a cylindrical space is provided in the casing, an outlet passage and an inlet passage are formed on the top side and the bottom side of the casing, and the shaft extends from the top opening of the cylindrical space. Filtration means is inserted in the direction and fixed to the communication path in the cylindrical space, and includes a top end plate and a bottom end plate on the top side and the bottom side of the cylindrical space, and the bottom end The plate has an inlet communication passage that communicates with the inlet passage, the top end plate has an outlet communication passage that communicates with the outlet passage, and the outlet communication passage is connected to an internal passage of the filtering means, A portion of the top end plate that is in close contact with the communication path of the cylindrical space is formed on a conical tapered outer surface that is inclined with respect to the axial direction of the cylindrical space, and is connected to the communication path of the cylindrical space. The top end plate and the bottom end plate are It is connected via a serial connection member, when replacing the filtering means, characterized in that withdrawing the connecting member and the bottom end plate and the filtering means and the top portion end plate integrally.

The invention described in Claim 4 is the casing structure of the polymer filter device of claim 2, the cleaning liquid or fluid to wash away microscopic impurities adhering to the fine gap of the screen after replacing the filtering means An inflow passage for injecting, and a discharge passage for discharging the cleaning liquid or fluid to the outside of the machine, wherein the inflow passage is formed at an upper part inside the inlet passage, and the discharge passage is formed above the outlet passage, In a state where the top end plate, the filtering means, the connecting member, and the bottom end plate are integrally raised, the inlet passage communicates with the inlet communication passage via the inflow passage, and the outlet The communication path communicates with the discharge path.

The invention described in Claim 8 is the casing structure of the polymer filter device of claim 6, the washing liquid or fluid to wash away microscopic impurities adhering to the fine gap of the screen after replacing the filtering means An inflow passage for injecting and a discharge passage for discharging the cleaning liquid or fluid to the outside of the machine are provided, and the inflow passage for injecting the cleaning liquid or fluid is formed in the upper part inside the inlet passage , The discharge passage is formed above the outlet passage, and the inlet passage is an inflow for injecting the cleaning liquid or fluid in a state where the top end plate, the filtering means, and the connecting member are integrally raised. together via a passage communicating with said inlet communicating passage, said bottom portion communication passage communicating with the discharge passage for discharging the washing liquid or fluid to the outside of the apparatus And butterflies.

Furthermore, in the invention described in claim 10, a lid is fixed to the top opening of the cylindrical space according to any one of claims 1 to 9 with a bolt, and one or more push bolts are provided on the lid. The sealing effect is improved by increasing the degree of adhesion of the tapered surface.

It is sectional drawing which shows the 1st Example of this invention. It is explanatory drawing at the time of filtration means replacement | exchange of 1st Example. It is sectional drawing which shows the 2nd Example of this invention. It is explanatory drawing at the time of filtration means replacement | exchange of 2nd Example. It is explanatory drawing at the time of extraction of the filtration means of 2nd Example. It is explanatory drawing at the time of washing | cleaning of the filtration means of 2nd Example. It is sectional drawing which shows the 3rd Example of this invention. It is sectional drawing which shows 4th Example of this invention. It is sectional drawing which shows 5th Example of this invention. It is explanatory drawing at the time of filtration means replacement | exchange of 5th Example. It is explanatory drawing at the time of washing | cleaning of the filtration means of the modification of 5th Example of this invention. It is sectional drawing which shows the 6th Example of this invention . It is sectional drawing of the conventional polymer filter apparatus. It is explanatory drawing at the time of filtration means replacement | exchange of the polymer filter apparatus shown in FIG.

A lid 20 is fixed to the opening 13 a of the cylindrical space 13 in the casing 10 with a bolt 21. A filtering means 30 is mounted in the communication passage 14 of the cylindrical space 13 coaxially with the axial direction of the cylindrical space 13. The filtering means 30 is composed of a bottomed filtering cylinder, and the reinforced porous cylinder has a right cylindrical shape, and a cylindrical screen 31 is mounted on the outer periphery (or inner periphery) thereof. An inlet 11 is formed on the upstream side (bottom side) of the side surface of the casing 10 and an outlet 12 is formed on the downstream side (top side). The inlet connection portion 11a and the outlet connection portion 12a are respectively attached to the production line.

As shown in FIG. 1 or 2, a top end plate 50 and a bottom end plate 40 are provided on the top side and the bottom side of the cylindrical space 13, respectively. The bottom end plate 40 has an inlet communication passage 41 communicating with the inlet passage 15 at the center position, and the top end plate 50 has an L-shaped outlet communication passage 51 communicating with the outlet passage 16 at the side position. It is formed. Further, the other end portion of the outlet communication passage 51 is connected to the internal passage 32 of the filtering means 30.

FIG. 3 is a cross-sectional view showing a second embodiment of the present invention, and FIG. 4 is an explanatory view of the second embodiment when the filtering means is replaced. Similarly to the first embodiment described above, the lid 20 is fixed to the opening 13 a of the cylindrical space 13 in the casing 10 with a bolt 21. A filtering means 30 is mounted in the communication passage 14 of the cylindrical space 13 coaxially with the axial direction of the cylindrical space 13. The filtering means 30 is composed of a bottomed filtering cylinder, and the reinforced porous cylinder has a right cylindrical shape, and a cylindrical screen 31 is mounted on the outer periphery (or inner periphery) thereof. An inlet 11 is formed on the upstream side (bottom side) of the side surface of the casing 10 and an outlet 12 is formed on the downstream side (top side). The inlet connection portion 11a and the outlet connection portion 12a are respectively attached to the production line.

As shown in FIG. 3 or FIG. 4, a top end plate 50 and a bottom end plate 40 are provided on the top side and the bottom side of the cylindrical space 13, respectively. The bottom end plate 40 is formed with an L-shaped inlet communication passage 41 communicating with the inlet passage 15 at the side position, and the top end plate 50 is formed with an L-shaped outlet communicating with the outlet passage 16 at the side position. A communication path 51 is formed. Further, the other end portion of the outlet communication passage 51 is connected to the internal passage 32 of the filtering means 30.

FIG. 6 is an explanatory diagram at the time of cleaning the filtering means of the second embodiment. After the filtration means 30 is replaced, an inflow passage 18 for injecting the cleaning liquid or fluid and a discharge passage 19 for discharging the cleaning liquid or fluid to the outside of the machine are provided in order to wash out minute impurities attached to the fine gaps of the cylindrical screen 31. . An inflow passage 18 for injecting cleaning liquid or fluid is formed in the upper part inside the inlet passage 15, and a discharge passage 19 for discharging the cleaning liquid or fluid out of the apparatus is formed above the outlet passage 16. As shown in FIG. 6, in the state where the top end plate 50, the filtering means 30, the connecting member 80, and the bottom end plate 40 are integrally raised to a predetermined height (H), the inlet passage 15 injects the cleaning liquid or fluid. While communicating with the inlet communication path 41 via the inflow path 18, the outlet communication path 51 communicates with the discharge path 19 that discharges the cleaning liquid or fluid to the outside of the apparatus. As a result, impurities are not washed away and mixed into the production stream, and the effect on the product quality is extremely large. In addition, you may wash | clean by inject | pouring another washing | cleaning liquid from another washing | cleaning liquid inflow port 18a.

FIG. 9 is a cross-sectional view showing a fifth embodiment of the present invention, and FIG. 10 is an explanatory view when replacing the filtering means of the fifth embodiment. A lid 20 is fixed to the opening 13 a of the cylindrical space 13 in the casing 10 with a bolt 21. A filtering means 30 is mounted in the communication passage 14 of the cylindrical space 13 coaxially with the axial direction of the cylindrical space 13. The filtering means 30 is composed of a bottomed filtering cylinder, and the reinforced porous cylinder has a right cylindrical shape, and a cylindrical screen 31 is mounted on the outer periphery (or inner periphery) thereof. An inlet 11 is formed on the upstream side (top side) of the side surface of the casing 10 and an outlet 12 is formed on the downstream side (bottom side), and the inlet connection part 11a and the outlet connection part 12a are respectively attached to the production line.

Further, as shown in FIG. 9 or FIG. 10, a conical tapered outer surface 62 that is inclined with respect to the axial direction of the cylindrical space 13 is provided at a portion of the top end plate 60 that is in close contact with the communication path 14 of the cylindrical space 13. Is formed. As a result, the leakage of fluid into and out of the machine is reduced, and leakage prevention to the outside of the machine is simplified. further. Since leakage of the circumferential gap is reduced, problems due to fluid retention can be solved, and resistance when the filtering means 30 is pulled out is reduced. As in the third embodiment described above, the portion of the connecting member 80 that is in close contact with the communication passage 14 of the cylindrical space 13 is the same as the portion of the top end plate 60 that is in close contact with the communication passage 14 of the cylindrical space 13. You may form in the conical taper outer surface inclined in the gradient.

FIG. 11 is an explanatory view at the time of cleaning the filtering means of the modified example of the fifth embodiment. After the filtration means 30 is replaced, an inflow passage 18 for injecting the cleaning liquid or fluid and a discharge passage 19 for discharging the cleaning liquid or fluid to the outside of the machine are provided in order to wash out minute impurities attached to the fine gaps of the cylindrical screen 31. . An inflow passage 18 for injecting cleaning liquid or fluid is formed in the upper part inside the inlet passage 15, and a discharge passage 19 for discharging the cleaning liquid or fluid out of the apparatus is formed above the outlet passage 16. As shown in FIG. 11, in the state where the top end plate 60, the filtering means 30 (including the bottom member 70) and the connecting member 80 are integrated and pulled up to a predetermined height (H), the inlet passage 15 injects the cleaning liquid or fluid. The inflow passage 18 communicates with the inlet communication passage 61 and the bottom communication passage 71 communicates with the discharge passage 19 that discharges the cleaning liquid or fluid out of the apparatus. As a result, impurities are not washed away and mixed into the production stream, and the effect on the product quality is extremely large. In addition, you may wash | clean by inject | pouring another washing | cleaning liquid from another washing | cleaning liquid inflow port 18a.

Claims (10)

A cylindrical space is provided in the casing, an outlet passage and an inlet passage are formed on the top side and the bottom side of the casing, a filtering means is inserted in the axial direction from the top opening of the cylindrical space, and the cylindrical shape It is fixed to the communication path in the space,
A top end plate and a bottom end plate are provided on the top side and the bottom side of the cylindrical space,
The top end plate has an outlet communication passage communicating with the outlet passage, and the outlet communication passage is connected to an internal passage of the filtering means.
A portion of the top end plate that is in close contact with the communication path of the cylindrical space is formed on a conical tapered outer surface inclined with respect to the axial direction of the cylindrical space,
A connecting member attached to the communication path of the cylindrical space, the top end plate and the bottom end plate are connected via the connecting member;
A casing structure for a polymer filter device, wherein when the filtering means is replaced, the top end plate, the filtering means, the connecting member, and the bottom end plate are pulled out as a unit. A cylindrical space is provided in the casing, an outlet passage and an inlet passage are formed on the top side and the bottom side of the casing, a filtering means is inserted in the axial direction from the top opening of the cylindrical space, and the cylindrical shape It is fixed to the communication path in the space,
A top end plate and a bottom end plate are provided on the top side and the bottom side of the cylindrical space,
The bottom end plate has an inlet communication passage communicating with the inlet passage;
The top end plate has an outlet communication passage communicating with the outlet passage, and the outlet communication passage is connected to an internal passage of the filtering means.
A portion of the top end plate that is in close contact with the communication path of the cylindrical space is formed on a conical tapered outer surface inclined with respect to the axial direction of the cylindrical space,
A connecting member attached to the communication path of the cylindrical space, the top end plate and the bottom end plate are connected via the connecting member;
A casing structure for a polymer filter device, wherein when the filtering means is replaced, the top end plate, the filtering means, the connecting member, and the bottom end plate are pulled out as a unit. A portion of the connecting member that is in close contact with the communication path of the cylindrical space is formed on a conical tapered outer surface inclined at the same gradient as a portion of the top end plate that is in close contact with the communication path of the cylindrical space. The casing structure of the polymer filter device according to claim 1, wherein the casing structure is a polymer filter device. The casing structure of the polymer filter device according to claim 2, wherein after the filtration means is replaced, an inflow passage for injecting a cleaning liquid or fluid for washing out minute impurities adhering to a narrow gap of the screen, and the cleaning liquid or fluid are externally connected. The inflow passage is formed in an upper portion of the inlet passage, the discharge passage is formed above the outlet passage,
In the state where the top end plate, the filtering means, the connecting member, and the bottom end plate are integrally raised, the inlet passage communicates with the inlet communication passage via the inflow passage, and A casing structure for a polymer filter device, wherein the outlet communication passage communicates with the discharge passage. A cylindrical space is provided in the casing, an inlet passage and an outlet passage are formed on the top side and the bottom side of the casing, a filtering means is inserted in an axial direction from the top opening of the cylindrical space, and the cylindrical shape It is fixed to the communication path in the space,
A top end plate is provided on the top side of the cylindrical space, and the top end plate and the top of the filtering means are connected by a connector,
A bottom member of the filtration means has a bottom communication path communicating with the outlet passage, the bottom communication path is connected to an internal passage of the filtration means;
A portion of the top end plate that is in close contact with the communication path of the cylindrical space is formed on a conical tapered outer surface inclined with respect to the axial direction of the cylindrical space,
Comprising a connecting member attached to the communication path of the cylindrical space;
The top end plate and the bottom member of the filtering means are connected via the connecting member,
A casing structure for a polymer filter device, wherein when the filtration means is replaced, the top end plate, the filtration means and the connecting member are pulled out as a unit. A cylindrical space is provided in the casing, an inlet passage and an outlet passage are formed on the top side and the bottom side of the casing, a filtering means is inserted in an axial direction from the top opening of the cylindrical space, and the cylindrical shape It is fixed to the communication path in the space,
A top end plate is provided on the top side of the cylindrical space, and the top end plate has an inlet communication path communicating with the inlet path,
A bottom member of the filtration means has a bottom communication path communicating with the outlet passage, the bottom communication path is connected to an internal passage of the filtration means;
A portion of the top end plate that is in close contact with the communication path of the cylindrical space is formed on a conical tapered outer surface inclined with respect to the axial direction of the cylindrical space,
Comprising a connecting member attached to the communication path of the cylindrical space;
The top end plate and the bottom member of the filtering means are connected via the connecting member,
A casing structure for a polymer filter device, wherein when the filtration means is replaced, the top end plate, the filtration means and the connecting member are pulled out as a unit. A portion of the connecting member that is in close contact with the communication path of the cylindrical space is formed on a conical tapered outer surface inclined at the same gradient as a portion of the top end plate that is in close contact with the communication path of the cylindrical space. The casing structure of the polymer filter device according to claim 5 or 6, wherein the casing structure is a polymer filter device.
7. A casing structure of a polymer filter device according to claim 6, wherein an inflow passage for injecting a cleaning liquid or fluid for washing out minute impurities adhering to a narrow gap of the screen after replacing the filtering means, The cleaning liquid inflow passage is formed in an upper part inside the inlet passage, and the cleaning liquid discharge passage is formed above the outlet passage.
In a state where the top end plate, the filtering means, and the connecting member are integrally raised, the inlet passage communicates with the inlet communication passage via the inflow passage, and the bottom communication passage is A casing structure for a polymer filter device, wherein the casing structure communicates with a discharge passage. The casing structure of the polymer filter device according to any one of claims 1 to 8, wherein the connecting member is constituted by a member divided into two in the axial direction. The top lid of the cylindrical space is provided with one or a plurality of push bolts to improve the sealing effect by increasing the adhesion of the tapered surface. The casing structure of the polymer filter device according to Item 1.