Corrosion-resistant capsule filter for industrial containment systems

Abstract

The application relates to the technical field of filters and discloses a corrosion-resistant capsule filter for an industrial closed system, which comprises a shell, an inner cylinder movably connected to the inner wall of the shell, a filter capsule membrane arranged on the outer wall of the inner cylinder, an auxiliary filter assembly arranged on the inner wall of the inner cylinder, the auxiliary filter assembly comprising a threaded rod fixedly installed at the top end of the inner wall of the inner cylinder, an inner threaded cylinder movably connected to the outer wall of the threaded rod, an oval inclined plate fixedly connected to the outer wall of the inner threaded cylinder, and a plurality of right-taper through holes evenly arranged on the surface of the oval inclined plate. The right-taper through holes in the oval inclined plate increase the flow rate of the liquid, and the upwardly moving liquid is changed in direction by the half-spherical cover and directly impacts on the filter capsule membrane connected to the inner cylinder, so that the flow rate of the liquid filtration is improved, the direction of the liquid is changed, and the liquid directly impacts on the filter structure, so that the efficiency and quality of the liquid filtration are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of filter, in particular to a corrosion-resistant capsule filter for industrial closed system. BACKGROUND

[0002] The capsule filter is an integrated filter device with folded filter membrane design, the shell is usually made of polypropylene and other high molecular materials, the internal filter core is packaged without adhesive by hot melt welding technology, has the characteristics of large filter area, strong chemical compatibility, no pollution risk, etc., is suitable for terminal filtration in laboratory, industrial solvent impurity removal, biopharmaceutical sterilization grade filtration and electronic chemical clarification scenes, the disposable structure avoids the cross contamination risk of traditional filter cartridge, and simplifies the installation and maintenance process through standardized interface design.

[0003] When the capsule filter works in the industrial closed system, it needs to be connected in the pipeline for transmitting liquid, and the liquid flows through the filter capsule membrane for filtering operation, but in the process of filtering the liquid by the vertical shell, the flow rate of the liquid is low, and the liquid cannot directly impact on the inner wall of the filter capsule membrane, and the filtering is mostly in the immersion mode, which reduces the efficiency and quality of the filtering in the industrial closed system, and after the filtering is completed, the inner wall of the filter capsule membrane is not cleaned, and after the cleaning is completed, the operation of discharging sewage is easy to cause the impurities to remain and affect the later filtering operation.

[0004] The Chinese invention patent (application number: 201510113570.6) discloses a "whole capsule filter", the specification discloses: a whole capsule filter, comprising a filter shell and a filter core welded in the filter shell, the filter core is composed of a folded assembly formed by folding the filter material and an inner support pipe and an outer support pipe, the filter material of the folded assembly is composed of four layers from outside to inside, i.e. from the upstream to the downstream of the filtration: an upper support protection polypropylene non-woven fabric layer, a polypropylene non-woven fabric layer for filtration, a polyether sulfone microporous filter membrane layer and a lower support protection polypropylene non-woven fabric layer; the two sides of the folded assembly are connected to form a cylindrical structure, which is sleeved between the inner support pipe and the outer support pipe, the inner support pipe and the outer support pipe are distributed with holes for allowing the filtered liquid to flow in; the gap between the filter core and the filter shell is filled with a pre-filter component layer; the top and bottom of the filter shell are provided with openings, the top opening is connected to the filtered liquid, and the bottom opening is connected to the filtered liquid; the filtered liquid entering the filter passes through the pre-filter component layer and the folded assembly, and then flows into the bottom opening of the filter shell from the downstream of the inner support pipe; the above patent can prove the defects existing in the prior art;

[0005] Therefore, it is necessary to design a corrosion-resistant capsule filter for industrial closed system to solve the above problems. SUMMARY

[0006] The present application aims at solving the problems existing in the prior art and provides a corrosion-resistant capsule filter for an industrial closed system.

[0007] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0008] A corrosion-resistant capsule filter for an industrial closed system comprises a shell, an inner cylinder movably connected to the inner wall of the shell, a filter capsule membrane arranged on the outer wall of the upper portion of the inner cylinder, an auxiliary filter assembly arranged on the inner wall of the upper portion of the inner cylinder, and a blowdown assembly arranged on the inner wall of the lower portion of the inner cylinder.

[0009] The auxiliary filter assembly comprises a threaded rod fixedly installed on the top end of the inner wall of the inner cylinder, an inner threaded cylinder movably connected to the outer wall of the threaded rod, an oval inclined plate fixedly connected to the outer wall of the inner threaded cylinder, a plurality of right conical through holes arranged on the surface of the oval inclined plate in a uniform distribution, a plurality of hemispherical covers arranged above the right conical through holes and fixedly installed on the surface of the oval inclined plate, and a filter plate fixedly connected to the lower surface of the oval inclined plate.

[0010] As a preferred technical scheme of the present application, an inner sleeve ring is fixedly connected to the upper portion of the inner threaded cylinder, and a ball bearing is fixedly connected to the outer wall of the inner sleeve ring.

[0011] As a preferred technical scheme of the present application, a limiting ring plate is movably connected to the outer wall of the ball bearing, a spring is fixedly connected to the upper portion of the limiting ring plate, and the spring is fixedly installed on the top end of the inner wall of the inner cylinder.

[0012] As a preferred technical scheme of the present application, a reverse conical filter screen is fixedly connected to the upper portion of the inner cylinder, a rubber conical ring is fixedly connected to the upper portion of the reverse conical filter screen, and the rubber conical ring is movably connected to the inner wall of the shell.

[0013] As a preferred technical scheme of the present application, the blowdown assembly comprises a support cylinder movably installed on the lower portion of the threaded rod, an inclined circular plate fixedly connected to the outer wall of the support cylinder and fixedly installed on the lower portion of the inner cylinder, a positioning shell movably installed on the lower portion of the shell, a guide plate fixedly connected to one side of the inner wall of the positioning shell, an elastic hinge arranged on the upper portion of the guide plate, a semicircular plate arranged on the other end of the elastic hinge, and the outer wall of the elastic hinge movably connected to the lower end of the inclined circular plate.

[0014] As a preferred technical scheme of the present application, a crescent plate is movably connected to the upper portion of the semicircular plate, and one side of the crescent plate is fixedly installed on one side of the inner wall of the positioning shell.

[0015] As a preferred technical scheme of the present application, the inclined circular plate surface is uniformly provided with a plurality of feeding windows, the inclined circular plate is movably connected with a baffle above the inclined circular plate, and the baffle is symmetrically and uniformly provided with two hinges on one side.

[0016] As a preferred technical scheme of the present application, the positioning shell is fixedly connected with a blowdown pipe on one side of the outer wall, the positioning shell is fixedly connected with a liquid inlet pipe in the middle of the lower surface, and the shell is fixedly connected with a liquid outlet pipe at the top end.

[0017] As a preferred technical scheme of the present application, the positioning shell is fixedly connected with a download plate on the upper end edge, the download plate is movably connected with an upper cover plate above the download plate, and the upper cover plate is fixedly installed below the shell.

[0018] As a preferred technical scheme of the present application, the outer wall of the download plate is fixedly connected with a plurality of hinge frames which are uniformly distributed in a circle, the hinge frames are provided with positioning screws above the hinge frames, the positioning screws are provided with positioning bolts on the outer wall of the positioning screws, the positioning bolts are movably connected with buckle plates below the positioning bolts, and the buckle plates are fixedly installed on the outer wall of the shell.

[0019] The present application has the following beneficial effects:

[0020] 1. In order to solve the problem that the flow rate of liquid is low and the liquid cannot directly impact on the inner wall of the filter capsule membrane in the process of filtering liquid by the vertical shell in the prior art, and the filtering is mostly in a submerged mode, thereby reducing the efficiency and quality of filtering in an industrial closed system, the flow rate of liquid is increased by the right conical through hole in the elliptical inclined plate, and the upward moving liquid is changed in direction by the half-sphere cover and directly impacts on the filter capsule membrane connected with the inner cylinder, so that the flow rate of liquid filtering is improved, and the direction of liquid is changed and directly impacts on the filtering structure, thereby improving the efficiency and quality of liquid filtering.

[0021] 2. In order to solve the problem that there is no cleaning of the inner wall of the filter capsule membrane after the filtering structure, and the operation of discharging dirt after cleaning is finished, which easily causes dirt retention to affect the later filtering operation, the elliptical inclined plate loses the liquid thrust when the liquid is closed, the spring elastically recovers and pushes the half-arc plate away from the crescent plate, the blowdown is opened, and the dirt is discharged along the elliptical inclined plate and the guide plate, thereby the blowdown structure can be opened after the filtered liquid is stopped, the dirt is prevented from being retained in the filtering structure, and the filtering effect is affected.

[0022] 3、Through in the filtering process, its liquid pushes the oval inclined plate, increases the flow rate of liquid by the positive taper through hole, and changes the flow direction by the half-sphere cover, so that the filtering efficiency is improved. In the cleaning process, the oval inclined plate is pushed by liquid, and is screwed between the inner threaded cylinder and the threaded rod, so that it rotates to scrape and clean the filter capsule, so that it can be flexibly switched between the filtering adjustment structure and the cleaning structure, and the filtering quality is improved.

[0023] 4、Through in the pollution discharge process, the oval inclined plate is driven by the rebound of the spring, and pushes the half-arc plate to open the pollution discharge structure. In the closing process, the oval inclined plate hits the inclined circular plate for limiting, and pushes the baffle to overturn and cover the feeding window, so as to close the liquid import and prevent the liquid in the shell from flowing back, so that it can be switched between the pollution discharge structure and the anti-backflow structure to prevent impurities from affecting the filtration of liquid. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The overall structure schematic diagram of the corrosion-resistant capsule filter for the industrial closed system is proposed in the present application;

[0025] Figure 2 The partial sectional structure schematic diagram of the corrosion-resistant capsule filter for the industrial closed system is proposed in the present application Figure 1 ;

[0026] Figure 3 The partial sectional structure schematic diagram of the corrosion-resistant capsule filter for the industrial closed system is proposed in the present application Figure 2 ;

[0027] Figure 4 The partial structure schematic diagram of the corrosion-resistant capsule filter for the industrial closed system is proposed in the present application Figure 1 ;

[0028] Figure 5 The partial structure schematic diagram of the corrosion-resistant capsule filter for the industrial closed system is proposed in the present application Figure 2 ;

[0029] Figure 6 The partial sectional structure schematic diagram of the corrosion-resistant capsule filter for the industrial closed system is proposed in the present application Figure 3 ;

[0030] Figure 7 The partial structure schematic diagram of the corrosion-resistant capsule filter for the industrial closed system is proposed in the present application Figure 3 ;

[0031] Figure 8 The partial structure schematic diagram of the corrosion-resistant capsule filter for the industrial closed system is proposed in the present application Figure 1 The enlarged structure schematic diagram of A in the present application

[0032] Figure 9 An internal structure diagram of a corrosion-resistant capsule filter for an industrial closed system according to the present application Figure 1 ;

[0033] Figure 10 An internal structure diagram of a corrosion-resistant capsule filter for an industrial closed system according to the present application Figure 2 .

[0034] In the figure: 1, shell; 2, positioning shell; 3, liquid outlet pipe; 4, liquid inlet pipe; 5, blowdown pipe; 6, auxiliary filter assembly; 601, spring; 602, limit ring plate; 603, threaded rod; 604, oval inclined plate; 605, right conical through hole; 606, hemispherical cover; 607, inner sleeve ring; 608, ball bearing; 609, filter plate; 610, internally threaded cylinder; 7, inner cylinder; 8, blowdown assembly; 801, elastic hinge; 802, semicircular plate; 803, crescent plate; 804, oblique circular plate; 805, hinge; 806, baffle; 807, support cylinder; 808, feed window; 809, guide plate; 9, positioning bolt; 10, filter capsule membrane; 11, rubber conical ring; 12, inverted conical filter screen; 13, upper cover plate; 14, lower cover plate; 15, hinge frame; 16, positioning screw; 17, clamping plate. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application.

[0036] Embodiment one, refer to Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 and Figure 5 shown, a corrosion-resistant capsule filter for an industrial closed system, comprising a shell 1, the inner wall of the shell 1 is movably connected with an inner cylinder 7, the outer wall of the inner cylinder 7 is provided with a filter capsule membrane 10 at the upper part, the filter capsule membrane 10 is used to filter the liquid introduced into the shell, the inner wall of the inner cylinder 7 is provided with an auxiliary filter assembly 6 at the upper part, and the inner wall of the inner cylinder 7 is provided with a blowdown assembly 8 at the lower part;

[0037] The auxiliary filtration assembly 6 includes a threaded rod 603 fixedly installed at the top of the inner wall of the inner cylinder 7. An inner threaded cylinder 610 is movably connected to the outer wall of the threaded rod 603. An elliptical inclined plate 604 is fixedly connected to the outer wall of the inner threaded cylinder 610. The surface of the elliptical inclined plate 604 is provided with evenly distributed positive conical through holes 605. A hemispherical cover 606 is provided above the positive conical through holes 605, and all hemispherical covers 606 are fixedly installed on the surface of the elliptical inclined plate 604. A filter plate 609 is fixedly connected to the lower surface of the elliptical inclined plate 604. When liquid enters the positioning shell 2, it moves upward and passes through the filter plate 609 below the elliptical inclined plate 604 for preliminary filtration. Under pressure, it passes through the elliptical inclined plate 604. The positive conical through-hole 605 on the surface, due to its decreasing diameter, increases the flow velocity of the liquid, impacting the hemispherical cover 606 and changing its direction. The liquid is guided to the inner wall of the inner cylinder 7 and comes into contact with the filter membrane 10 installed in the inner cylinder 7 for secondary filtration. While changing the direction of the liquid, it also pushes the elliptical inclined plate 604 upward. The internal threaded cylinder 610 installed in the middle of the elliptical inclined plate 604 cooperates with the threaded rod 603. As the liquid pushes, it rotates upward on the outer wall of the threaded rod 603 to clean the impurities adhering to the inner wall of the inner cylinder 7 and collect them on the surface of the elliptical inclined plate 604.

[0038] The positive conical through-hole 605 in the elliptical inclined plate 604 increases the flow rate of the liquid, while the hemispherical cover 606 changes the direction of the upward-moving liquid, directly impacting the filter membrane 10 connected to the inner cylinder 7. This increases the flow rate of the liquid filtration and changes the direction of the liquid, directly impacting the filter structure, thereby improving the efficiency and quality of liquid filtration.

[0039] Furthermore, such as Figure 5 As shown, an inner ring 607 is fixedly connected above the internal threaded cylinder 610, and a ball bearing 608 is fixedly connected to the outer wall of the inner ring 607. The ball bearing 608 rotates within the limiting ring plate 602 to reduce the friction between them.

[0040] Furthermore, such as Figure 6 and Figure 6 As shown, a limiting ring plate 602 is movably connected to the outer wall of the ball bearing 608. A spring 601 is fixedly connected above the limiting ring plate 602. The spring 601 is fixedly installed at the top of the inner wall of the inner cylinder 7. The spring 601 connected to the limiting ring plate 602 is compressed by the upwardly moving elliptical inclined plate 604. After losing the thrust of the liquid, the spring 601 loses pressure and moves the elliptical inclined plate 604 downward to reset.

[0041] Furthermore, such as Figure 2As shown, the inner cylinder 7 is fixedly connected with an inverted cone filter screen 12, and the inverted cone filter screen 12 is fixedly connected with a rubber cone ring 11. The rubber cone ring 11 increases the sealing between the inverted cone filter screen 12 and the shell 1. The rubber cone ring 11 is movably connected with the inner wall of the shell 1. The liquid passing through the filter membrane 10 in the inner cylinder 7 is filtered again by the inverted cone filter screen 12, thereby improving the filtering quality.

[0042] Embodiment two, refer to Figure 3 、 Figure 4 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 And Figure 10 As shown, the pollution discharge assembly 8 comprises a supporting cylinder 807 movably installed below the threaded rod 603. The outer wall of the supporting cylinder 807 is fixedly connected with an inclined circular plate 804, and the inclined circular plate 804 is fixedly installed below the inner cylinder 7. The lower portion of the shell 1 is movably installed with a positioning shell 2. The inner wall of the positioning shell 2 is fixedly connected with a guide plate 809. The guide plate 809 and the positioning shell 2 collect and guide the impurities. The upper portion of the guide plate 809 is provided with an elastic hinge 801, and the other end of the elastic hinge 801 is provided with a semi-arc plate 802. The outer wall of the elastic hinge 801 is movably connected with the lower end of the inclined circular plate 804. When the liquid stops being input, the elliptical inclined plate 604 loses the thrust of the liquid, and the spring 601 restores to the original state and pushes the elliptical inclined plate 604 to move downward, impacting the semi-arc plate 802, so that the semi-arc plate 802 is separated from the crescent plate 803 to open the pollution discharge. The impurities collected on the surface of the elliptical inclined plate 604 flow into the guide plate 809 along the inclined surface and are discharged along with the opening of the pollution discharge pipe 5. At the same time, the elliptical inclined plate 604 moves downward and contacts the inclined circular plate 804, which presses the baffle 806 installed on the surface of the inclined circular plate 804 to close the liquid inlet and prevent the liquid in the shell from flowing back.

[0043] Through the closing of the liquid, the elliptical inclined plate 604 loses the thrust of the liquid, and the spring 601 elastically recovers to push the semi-arc plate 802 away from the crescent plate 803 to open the pollution discharge. The impurities are introduced into the guide plate 809 along the elliptical inclined plate 604 for pollution discharge operation, and the elliptical inclined plate 604 impacts the inclined circular plate 804 for limiting and pushes the baffle 806 to overturn and cover the feeding window 808 to close the liquid inlet and prevent the liquid in the shell from flowing back. Therefore, the pollution discharge structure can be opened after stopping the filtrate to prevent the impurities from remaining in the filtering structure and affecting the filtering effect.

[0044] Further, as shown in Figure 4 The upper portion of the semi-arc plate 802 is movably connected with the crescent plate 803. One side of the crescent plate 803 is fixedly installed on one side of the inner wall of the positioning shell 2. The crescent plate 803 limits the semi-arc plate 802 turned upward by the elastic hinge 801 to ensure the sealing.

[0045] Furthermore, such as Figure 9 and Figure 1 As shown, a number of feed windows 808 are evenly distributed on the surface of the inclined circular plate 804. A baffle 806 is movably connected above the inclined circular plate 804. Two hinges 805 are symmetrically and evenly distributed on one side of the baffle 806. The other end of the two hinges 805 on the same side is installed on one side of the baffle 806. The hinges 805 cooperate with the flipping of the baffle 806 to open the liquid introduction and prevent backflow.

[0046] Furthermore, such as Figure 8 As shown, a drain pipe 5 is fixedly connected to one side of the outer wall of the positioning shell 2, an inlet pipe 4 is fixedly connected to the middle of the lower surface of the positioning shell 2, and an outlet pipe 3 is fixedly connected to the top of the outer shell 1. Multiple pipes are used to cooperate in the export and import of liquid and guide the export of impurities.

[0047] Furthermore, such as Figure 8 As shown, a download plate 14 is fixedly connected to the upper edge of the positioning shell 2, and an upper cover plate 13 is movably connected above the download plate 14. The upper cover plate 13 is fixedly installed below the outer shell 1. The outer shell 1 and the positioning shell 2 are assembled by the cooperation between the upper cover plate 13 and the download plate 14.

[0048] Furthermore, such as ​ As shown, several hinge frames 15 are evenly distributed and fixedly connected to the outer wall of the download plate 14. A positioning screw 16 is provided above the hinge frame 15. A positioning bolt 9 is provided on the outer wall of the positioning screw 16. A buckle plate 17 is movably connected below the positioning bolt 9. The buckle plate 17 is fixedly installed on the outer wall of the outer shell 1. By flipping the positioning screw 16 upward with the hinge frame 15 to contact the buckle plate 17, and rotating the positioning bolt 9 to contact the buckle plate 17, the outer shell 1 and the positioning shell 2 are locked.

[0049] The specific working principle of this invention is as follows: The operator places the inner cylinder 7 into the outer shell 1, then places the outer shell 1 containing the inner cylinder 7 onto the positioning shell 2, and aligns the lower end of the inclined circular plate 804 with the elastic hinge 801. After completion, the upper cover plate 13 of the outer shell 1 is aligned with the lower download plate 14 below the positioning shell 2. Then, the hinge frame 15 is flipped upward, driving the positioning bolt 9 and the buckle plate 17 to move downward and contact the buckle plate 17 to lock the outer shell 1 and the positioning shell 2. After locking, the liquid inlet pipe 4 and the liquid outlet pipe 3 connect the entire structure in series in the industrial closed system for liquid filtration.

[0050] Filtering: liquid is introduced into the positioning shell 2 by the liquid inlet pipe 4, and contacts the inclined circular plate 804 below the inner cylinder 7, pushes the baffle 806 through the feed window 808 to flip up by the hinge 805, and the liquid is preliminarily accelerated, contacts the elliptical inclined plate 604, and is preliminarily filtered through the filter plate 609 below the elliptical inclined plate 604. Under the pushing of the pressure, the liquid passes through the right conical through hole 605 on the surface of the elliptical inclined plate 604, and due to the right conical through hole 605, the diameter decreases from large to small, so that the flow rate of the liquid flowing through is increased again, and the liquid hits the half-sphere cover 606 to change the direction of the liquid, and is guided to the inner side wall of the inner cylinder 7, contacts the filter capsule membrane 10 installed on the inner cylinder 7, and is filtered again. After passing through the filter capsule membrane 10, the liquid enters between the inner cylinder 7 and the outer shell 1, and as the liquid level rises, the liquid passing through the filter capsule membrane 10 in the inner cylinder 7 is filtered again by the inverted conical filter screen 12. The filtered liquid is guided out of the liquid outlet pipe 3 and into the industrial closed system.

[0051] Cleaning: while changing the direction of the liquid, the elliptical inclined plate 604 is also pushed to move upward. The middle part of the elliptical inclined plate 604 is installed with an inner threaded cylinder 610 which cooperates with the threaded rod 603. With the pushing of the liquid, the elliptical inclined plate 604 rotates and moves upward on the outer wall of the threaded rod 603, extruding the spring 601 connected by the limiting ring plate 602, and the ball bearing 608 on the outer wall of the inner threaded cylinder 610 rolls with the limiting ring plate 602, reducing the friction in the rotating process, to clean the impurities attached to the inner wall of the inner cylinder 7 and collect on the surface of the elliptical inclined plate 604.

[0052] Discharge: after the liquid stops being input, the surface of the inclined circular plate 804 is flipped down by the baffle 806 connected by the hinge 805, the elliptical inclined plate 604 loses the pushing force of the liquid, and the spring 601 restores to its original state to push the elliptical inclined plate 604 to move downward. At the same time, the elliptical inclined plate 604 moves downward in a reverse manner due to the threaded connection between the inner threaded cylinder 610 and the threaded rod 603, to scrape the impurities on the filter capsule membrane 10 again, so that the impurities are pushed by the falling elliptical inclined plate 604 to the surface of the inclined circular plate 804. The impurities on the surface of the inclined circular plate 804 can be inclinedly introduced into the surface of the half-arc plate 802, and the elliptical inclined plate 604 continues to fall to hit the half-arc plate 802, so that the half-arc plate 802 is separated from the crescent plate 803 to open the discharge, and the impurities collected on the surface of the elliptical inclined plate 604 flow into the guide plate 809 along the inclined surface, and are guided out through the opening of the discharge pipe 5. At the same time, the elliptical inclined plate 604 moves downward and contacts the inclined circular plate 804 to press the baffle 806 installed on the surface of the inclined circular plate 804, to close the liquid inlet and prevent the liquid in the shell from flowing back.

[0053] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A corrosion-resistant capsule filter for use in an industrial containment system, comprising a casing (1), characterized in that, The inner wall of the shell (1) is movably connected with an inner cylinder (7), the upper portion of the outer wall of the inner cylinder (7) is provided with a filter capsule (10), the inner wall of the inner cylinder (7) is provided with an auxiliary filter assembly (6) at the upper portion, and the lower portion of the inner wall of the inner cylinder (7) is provided with a blowdown assembly (8). The auxiliary filter assembly (6) comprises a threaded rod (603) fixedly installed at the top end of the inner wall of the inner cylinder (7), the outer wall of the threaded rod (603) is movably connected with an inner threaded cylinder (610), the outer wall of the inner threaded cylinder (610) is fixedly connected with an oval inclined plate (604), the surface of the oval inclined plate (604) is uniformly provided with a plurality of positive taper through holes (605), the upper portion of each positive taper through hole (605) is provided with a half-sphere cover (606), and the half-sphere cover (606) is fixedly installed on the surface of the oval inclined plate (604), and the lower surface of the oval inclined plate (604) is fixedly connected with a filter plate (609). The blowdown assembly (8) comprises a support cylinder (807) movably installed below the threaded rod (603), the outer wall of the support cylinder (807) is fixedly connected with an inclined circular plate (804), the inclined circular plate (804) is fixedly installed below the inner cylinder (7), the lower portion of the shell (1) is movably installed with a positioning shell (2), one side of the inner wall of the positioning shell (2) is fixedly connected with a guide plate (809), the upper portion of the guide plate (809) is provided with an elastic hinge (801), the other end of the elastic hinge (801) is provided with a half-arc plate (802), and the outer wall of the elastic hinge (801) is movably connected with the lower end of the inclined circular plate (804).

2. A corrosion resistant capsule filter for use in an industrial containment system according to claim 1, wherein, The upper portion of the inner threaded cylinder (610) is fixedly connected with an inner sleeve ring (607), and the outer wall of the inner sleeve ring (607) is fixedly connected with a ball bearing (608).

3. A corrosion resistant capsule filter for use in an industrial containment system according to claim 2, wherein, The outer wall of the ball bearing (608) is movably connected with a limiting ring plate (602), the upper portion of the limiting ring plate (602) is fixedly connected with a spring (601), and the upper portion of the spring (601) is fixedly installed at the top end of the inner wall of the inner cylinder (7).

4. A corrosion resistant capsule filter for use in an industrial containment system according to claim 1, wherein, The upper portion of the inner cylinder (7) is fixedly connected with an inverted taper filter screen (12), the upper portion of the inverted taper filter screen (12) is fixedly connected with a rubber taper ring (11), and the upper portion of the rubber taper ring (11) is movably connected with the inner wall of the shell (1).

5. A corrosion resistant capsule filter for use in an industrial containment system according to claim 4, wherein, The upper portion of the half-arc plate (802) is movably connected with a crescent plate (803), and one side of the crescent plate (803) is fixedly installed on one side of the inner wall of the positioning shell (2).

6. A corrosion resistant capsule filter for use in an industrial containment system according to claim 5, wherein, The surface of the inclined circular plate (804) is uniformly provided with a plurality of feeding windows (808), the upper portion of the inclined circular plate (804) is movably connected with a baffle (806), and two hinges (805) are symmetrically and uniformly arranged on one side of the baffle (806).

7. A corrosion-resistant capsule filter for use in an industrial containment system according to claim 6, wherein, One side of the outer wall of the positioning shell (2) is fixedly connected with a blowdown pipe (5), the lower surface of the positioning shell (2) is fixedly connected with a liquid inlet pipe (4) in the middle, and the top end of the shell (1) is fixedly connected with a liquid outlet pipe (3).

8. A corrosion resistant capsule filter for use in an industrial containment system according to claim 7, wherein, The lower plate (14) is fixedly connected to the upper end edge of the positioning shell (2), and the upper cover plate (13) is movably connected to the upper portion of the lower plate (14) and is fixedly installed below the shell (1).

9. A corrosion resistant capsule filter for use in an industrial containment system according to claim 8, wherein, A plurality of hinge frames (15) are fixedly connected to the outer wall of the lower plate (14) in a circumferentially uniform manner, the positioning screw rod (16) is arranged above the hinge frame (15), the positioning screw bolt (9) is arranged on the outer wall of the positioning screw rod (16), the buckle plate (17) is movably connected below the positioning screw bolt (9) and is fixedly installed on the outer wall of the shell (1).

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