Chemical equipment water recycling device

Abstract

The application discloses a chemical equipment water recycling device, and relates to the technical field of chemical equipment; specifically comprising a movable base, an initial filter box, a secondary filter box and a circulating water storage tank are sequentially installed on the top of the base, an initial filtrate conveying pipe and an initial filtrate conveying pump are installed between the initial filter box and the secondary filter box, a circulating water recovery pipe and a circulating water recovery pump are installed between the secondary filter box and the circulating water storage tank, a support is installed at the bottom of the circulating water storage tank, and a high-pressure pump connected with the circulating water storage tank is installed in the support. In the application, the water recycling device is installed on the movable base, when the chemical equipment is cleaned, the device is moved to the working position, and when the chemical equipment is flushed, the flushing liquid is circulated, so that the working phenomenon is prevented from being polluted, the chemical equipment is in a closed loop state during the flushing process, harmful substances are prevented from being discharged, and water resources are saved by water recycling.

Description

A water recycling device for chemical equipment Technical Field

[0001] This invention relates to the field of chemical equipment technology, and in particular to a water recycling device for chemical equipment. Background Technology

[0002] Chemical industrial equipment is a general term for the machines and equipment used in chemical industrial production. In order to process raw materials into finished products of a certain specification, chemical production often requires a series of chemical processes, such as raw material pretreatment, chemical reaction, and separation and purification of reaction products. The machinery used to realize these processes is often classified as chemical equipment. The quality, output, and cost of chemical products largely depend on the sophistication of chemical equipment. The characteristics of chemical machinery itself must be able to adapt to the special conditions often encountered in chemical processes, such as high temperature, high pressure, high vacuum, ultra-low pressure, flammability, explosiveness, and strong corrosiveness.

[0003] In daily production, chemical equipment needs to be maintained regularly. Tanks, containers, and heat exchangers need to be flushed to remove sludge and scale. However, the routine high-pressure water flushing of this equipment involves spraying water from one end with a high-pressure water gun, while sludge and other impurities are sprayed out from the other end. Much of this is directly discharged onto the ground, causing pollution to the work site. Furthermore, some chemicals are toxic, affecting operational safety.

[0004] In view of this, the present invention provides a water recycling device for chemical equipment to solve the technical problems existing in the prior art. Summary of the Invention

[0005] Based on the technical problems existing in the background technology, the present invention proposes a water recycling device for chemical equipment.

[0006] The present invention proposes a water recycling device for chemical equipment, comprising a movable base, on the top of which a primary filter box, a secondary filter box, and a circulating water storage tank are sequentially installed. A primary filtrate delivery pipe and a primary filtrate delivery pump are installed between the primary filter box and the secondary filter box. A circulating water recovery pipe and a circulating water recovery pump are installed between the secondary filter box and the circulating water storage tank. A support is installed at the bottom of the circulating water storage tank, and a high-pressure pump connected to the circulating water storage tank is installed inside the support.

[0007] The top of the primary filter box is equipped with a primary filtration mechanism, and the top of the primary filtration mechanism is equipped with a recovery hose. The top of the base is also equipped with a vacuum pump, and the air inlet of the vacuum pump is connected to the primary filter box. An intercepting mesh cylinder is installed at the air inlet of the vacuum pump. The bottom of the secondary filter box is equipped with a support shell, and a stepper motor is installed inside the support shell.

[0008] The secondary filtration box is internally equipped with a filtration chamber and a drainage chamber. A drainage pipe is rotatably installed between the filtration chamber and the drainage chamber, and the bottom end of the drainage pipe is connected to a stepper motor. A secondary filtration mechanism is installed on the top of the filtration chamber, and the bottom end of the secondary filtration mechanism is connected to the top of the drainage pipe. Filter residue discharge mechanisms are installed on both sides of the filtration chamber, and filter residue cleaning hoppers are inserted and removed from the top of the filter residue discharge mechanisms.

[0009] Preferably, in this invention, the top of the drain pipe is provided with a transmission groove, and the bottom of the secondary filtration mechanism is provided with a transmission bolt that is sleeved on the outside of the transmission groove at the top of the drain pipe.

[0010] Preferably, in this invention, the secondary filtration mechanism includes a movable cover plate that is easy to assemble and disassemble, and a connecting shaft is fixedly installed at the bottom end of the movable cover plate, and a filter screen cylinder is rotatably installed at the bottom end of the connecting shaft.

[0011] Preferably, in this invention, the bottom end of the connecting shaft extends into the interior of the filter cylinder, and a support ring is fixedly installed on the outer side of the connecting shaft. Multiple staggered brushing components and spiral flushing components are rotatably installed on the outer side of the support ring. An internal toothed ring that meshes with the top of the brushing components and spiral flushing components is installed on the inner wall of the filter cylinder.

[0012] Preferably, in this invention, the scrubbing assembly includes a scrubbing rod and cleaning bristles installed on the outer wall of the scrubbing rod, and the spiral flushing assembly includes a flushing rod, with spirally distributed paddles on the outer side of the flushing rod.

[0013] Preferably, in this invention, the filter residue discharge mechanism includes a discharge shell, and a plurality of arc-shaped rods are provided between the discharge shell and the filter chamber, and a plurality of movable spring pieces are rotatably installed on the outer wall of the arc-shaped rods.

[0014] Preferably, in this invention, the primary filtration mechanism includes a sealing plate that is easy to disassemble and assemble, and an overflow box is installed at the bottom of the sealing plate, and a primary filter screen is installed in the middle of the overflow box.

[0015] Preferably, the primary filtration mechanism further includes a rotating rod penetrating the top of the primary filter cylinder and an annular cavity installed at the inlet of the primary filtrate delivery pipe. The bottom end of the rotating rod is equipped with multiple water turbine blades located inside the annular cavity. The outer wall of the rotating rod is equipped with soft bristles that contact the inner wall of the primary filter cylinder, and the top of the rotating rod is equipped with a pusher brush that contacts the outer wall of the primary filter cylinder.

[0016] Compared with the prior art, the present invention provides a water recycling device for chemical equipment, which has the following beneficial effects:

[0017] In this invention, a water recycling device is installed on a movable base. When cleaning chemical equipment, the device is moved to the work site, water is injected into the device, the outlet of the high-pressure pump is connected to the nozzle for rinsing the chemical equipment, and the recovery hose is connected to the receiving end of the rinsing liquid of the chemical equipment. A vacuum pump is used to connect to the primary filter box, creating a suction negative pressure in the primary filter box. The residual liquid is drawn into the primary filter box and undergoes preliminary filtration by the primary filtration mechanism. Then it is pumped into the secondary filter box for secondary filtration. During filtration, the stepper motor is turned on, driving the secondary filtration mechanism to rotate rapidly. The filtered filter residue is thrown into the filter residue discharge mechanism under the action of centrifugal force. The filtered water enters the drain pipe and is then pumped into the circulating water storage tank. During the rinsing of chemical equipment, the rinsing liquid is circulated to avoid contamination of the work site. The chemical equipment rinsing process is in a closed loop to avoid the discharge of harmful substances. At the same time, water recycling saves water resources. Attached Figure Description

[0018] Figure 1 is a schematic diagram of a water recycling device for chemical equipment proposed in this invention.

[0019] Figure 2 is a side view of a water recycling device for chemical equipment proposed in this invention.

[0020] Figure 3 is a partial cross-sectional view of a water recycling device for chemical equipment proposed in this invention.

[0021] Figure 4 is a schematic diagram of the filter residue discharge mechanism of a water recycling device for chemical equipment proposed in this invention.

[0022] Figure 5 is a schematic diagram of the movable spring structure of a water recycling device for chemical equipment proposed in this invention.

[0023] Figure 6 is a schematic diagram of the secondary filtration mechanism of a water recycling device for chemical equipment proposed in this invention.

[0024] Figure 7 is a schematic diagram of the primary filtration mechanism of a water recycling device for chemical equipment proposed in Embodiment 2 of the present invention.

[0025] Figure 8 is a partial structural diagram of the primary filtration mechanism of a water recycling device for chemical equipment proposed in Embodiment 2 of the present invention.

[0026] Figure 9 is a schematic diagram of the secondary filtration mechanism of a water recycling device for chemical equipment proposed in Embodiment 3 of the present invention.

[0027] In the diagram: 1. Base; 2. Primary filter box; 3. Filter residue cleaning hopper; 4. Primary filtrate transfer pump; 5. Primary filtrate transfer pipe; 6. Recovery hose; 7. Primary filtration mechanism; 71. Overflow box; 72. Soft bristle column; 73. Pushing brush; 74. Rotating rod; 75. Primary filter screen cylinder; 76. Water turbine paddle; 77. Annular cavity; 8. Secondary filtration mechanism; 81. Movable cover plate; 82. Filter screen cylinder; 83. Connecting shaft; 84. Transmission bolt; 85. Support ring; 86. Internal gear ring; 87. Brush. 88. Brush rod, 89. Paddle, 810. Cleaning brush bristles, 9. Secondary filter box, 10. Circulating water recovery pipe, 11. Circulating water recovery pump, 12. Circulating water storage tank, 13. High pressure pump, 14. Bracket, 15. Support shell, 16. Filter residue discharge mechanism, 161. Sludge discharge shell, 162. Movable spring, 163. Arc rod, 17. Vacuum pump, 18. Stepper motor, 19. Drainage chamber, 20. Drainage pipe, 21. Filter chamber, 22. Interception net cylinder. Detailed Implementation

[0028] The embodiments of this patent are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.

[0029] Example 1:

[0030] Referring to Figures 1-8, a water recycling device for chemical equipment includes a movable base 1. A primary filter box 2, a secondary filter box 9, and a circulating water storage tank 12 are sequentially installed on the top of the base 1. A primary filtrate delivery pipe 5 and a primary filtrate delivery pump 4 are installed between the primary filter box 2 and the secondary filter box 9. A circulating water recovery pipe 10 and a circulating water recovery pump 11 are installed between the secondary filter box 9 and the circulating water storage tank 12. A bracket 14 is installed at the bottom of the circulating water storage tank 12, and a high-pressure pump 13 connected to the circulating water storage tank 12 is installed inside the bracket 14.

[0031] The top of the primary filter box 2 is equipped with a primary filter mechanism 7, and the top of the primary filter mechanism 7 is equipped with a recovery hose 6. The top of the base 1 is also equipped with a vacuum pump 17, and the air inlet of the vacuum pump 17 is connected to the primary filter box 2. An intercepting net cylinder 22 is installed at the air inlet of the vacuum pump 17. The bottom of the secondary filter box 9 is equipped with a support housing 15, and a stepper motor 18 is installed inside the support housing 15.

[0032] The secondary filter box 9 is equipped with a filter chamber 21 and a drain chamber 19. A drain pipe 20 is rotatably installed between the filter chamber 21 and the drain chamber 19, and the bottom end of the drain pipe 20 is connected to the stepper motor 18. A secondary filter mechanism 8 is installed on the top of the filter chamber 21, and the bottom end of the secondary filter mechanism 8 is connected to the top of the drain pipe 20. Filter residue discharge mechanisms 16 are installed on both sides of the filter chamber 21, and filter residue cleaning hoppers 3 are inserted and removed from the top of the filter residue discharge mechanisms 16.

[0033] In this invention, a water recycling device is installed on a movable base 1. When cleaning chemical equipment, water is injected into the device. The outlet of the high-pressure pump 13 is connected to a nozzle for rinsing the chemical equipment, while the recovery hose 6 is connected to the receiving end of the rinsing liquid of the chemical equipment. A vacuum pump 17 is connected to the primary filter box 2, creating a suction negative pressure in the primary filter box 2. The residual liquid is drawn into the primary filter box 2 and undergoes preliminary filtration by the primary filtration mechanism 7. Then, it is pumped into the secondary filter box 9 for secondary filtration. At the same time as filtration, the stepper motor 18 is turned on, driving the secondary filtration mechanism 8 to rotate rapidly. The filtered filter residue is thrown into the filter residue discharge mechanism 16 under the action of centrifugal force. The filtered water enters the drain pipe 20 and is then pumped into the circulating water storage tank 12. During the rinsing of chemical equipment, the rinsing liquid is circulated to avoid contamination of the working environment. The rinsing process of chemical equipment is in a closed loop to avoid the discharge of harmful substances. At the same time, water recycling saves water resources.

[0034] As a further embodiment of the present invention, a transmission groove is provided at the top of the drain pipe 20, and a transmission bolt 84 is provided at the bottom of the secondary filtration mechanism 8, which is sleeved on the outside of the transmission groove at the top of the drain pipe 20. In the present invention, after the secondary filtration mechanism 8 is installed, its bottom end is directly inserted into the top of the drain pipe 20, so that the drain pipe 20 drives the secondary filtration mechanism 8 to rotate, thereby throwing out the filter residue intercepted on the outside of the secondary filtration mechanism 8, achieving the effect of cleaning the filter residue.

[0035] As a further embodiment of the present invention, the secondary filtration mechanism 8 includes a movable cover plate 81 that is easy to disassemble and assemble, and a connecting shaft 83 is fixedly installed at the bottom end of the movable cover plate 81. A filter screen cylinder 82 is rotatably installed at the bottom end of the connecting shaft 83. In the present invention, the filtrate from the primary filtration enters the filtration chamber 21 and is filtered from the outside of the filter screen cylinder 82 inward. The stepper motor 18 is periodically turned on to drive the filter screen cylinder 82 to rotate rapidly. The filter residue intercepted on the outer wall of the filter screen cylinder 82 is thrown into the filter residue discharge mechanism 16 under the action of centrifugal force and deposited in the filter residue cleaning hopper 3. After the chemical equipment is flushed, the water inside the device is drained and the filter residue cleaning hopper 3 is pulled out, thus completing the cleaning operation of the secondary filtration filter residue.

[0036] As a further embodiment of the present invention, the bottom end of the connecting shaft 83 extends into the interior of the filter cylinder 82, and a support ring 85 is fixedly installed on the outer side of the connecting shaft 83. Multiple staggered brushing components and spiral flushing components are rotatably installed on the outer side of the support ring 85. An internal toothed ring 86 is installed on the inner wall of the filter cylinder 82, which meshes with the top of the brushing components and the spiral flushing components. In the present invention, when the filter cylinder 82 rotates rapidly under the action of the stepper motor 18, the interior of the filter cylinder 82, relying on the internal toothed ring 86, drives the brushing components and the spiral flushing components to rotate against the inner wall of the filter cylinder 82, thereby completing the cleaning operation of the inner wall of the filter cylinder 82. Furthermore, when the spiral flushing components rotate, an outward impact liquid flow is formed in the inner wall area of ​​the filter cylinder 82, effectively cleaning the mesh of the filter cylinder 82.

[0037] As a further embodiment of the present invention, the brushing assembly includes a brushing rod 87 and cleaning bristles 810 installed on the outer wall of the brushing rod 87. The spiral flushing assembly includes a flushing rod 88, and spirally distributed paddles 89 are provided on the outer side of the flushing rod 88. In the present invention, the brushing rod 87 rotates rapidly along the inner wall of the filter cylinder 82. The cleaning bristles 810 hit the inner wall of the filter cylinder 82 once for each rotation. The cleaning bristles 810 push out the impurities in the holes of the filter cylinder 82 and are flushed by the spirally distributed paddles 89 that follow, thereby achieving rapid cleaning of the surface of the filter cylinder 82 and extending the water recycling time.

[0038] As a further embodiment of the present invention, the filter residue discharge mechanism 16 includes a discharge housing 161, and a plurality of arc-shaped rods 163 are provided between the discharge housing 161 and the filter chamber 21. A plurality of movable springs 162 are rotatably mounted on the outer wall of the arc-shaped rods 163. In the present invention, when the secondary filtration mechanism 8 rotates rapidly, the impurities thrown out from the outer surface of the secondary filtration mechanism 8 impact the movable springs 162, causing the movable springs 162 to swing. When the filter residue enters the interior of the discharge housing 161, the movable springs 162 reset under the action of gravity, separating the discharge housing 161 from the filter chamber 21 and increasing the speed of filter residue deposition.

[0039] As a further embodiment of the present invention, the primary filtration mechanism 7 includes a sealing plate that is easy to disassemble and assemble, and an overflow box 71 is installed at the bottom of the sealing plate, and a primary filter screen 75 is installed in the middle of the overflow box 71. In the present invention, the interior of the primary filter box 2 is under negative pressure under the action of the vacuum pump 17. When the recovery hose 6 is connected to the flushing drain port of the chemical equipment, the sewage is sucked into the primary filter box 2. Under the action of the primary filter screen 75, large particles of filter residue are intercepted, thereby achieving the technical effect of preliminary filtration and purification of sewage.

[0040] Example 2:

[0041] Referring to Figures 7-8, a water recycling device for chemical equipment includes a primary filtration mechanism 7 with a rotating rod 74 penetrating the top of a primary filter cylinder 75 and an annular cavity 77 installed at the inlet of the primary filtrate conveying pipe 5. Multiple water turbine blades 76 are installed at the bottom of the rotating rod 74 inside the annular cavity 77. Soft bristle columns 72 that contact the inner wall of the primary filter cylinder 75 are installed on the outer wall of the rotating rod 74, and a pushing brush 73 that contacts the outer wall of the primary filter cylinder 75 is installed at the top of the rotating rod 74. In this invention, when the pre-filtered filtrate flows through the bottom of the primary filter cylinder 75, it drives the water turbine paddle 76 located inside the annular cavity 77 to move, which in turn drives the rotating rod 74 to rotate inside the primary filter cylinder 75. During the rotation, the pusher brush 73 pushes the impurities located outside the primary filter cylinder 75 outward, and the inside of the primary filter cylinder 75 is also scraped by the soft bristle column 72. The soft bristle column 72 inserts into the mesh of the primary filter cylinder 75, achieving a rapid unclogging effect and improving the efficiency of water recycling.

[0042] Example 3:

[0043] Referring to Figure 9, a water recycling device for chemical equipment has a connecting shaft 83 whose bottom end extends into the interior of a filter cylinder 82. A support ring 85 is fixedly installed on the outer side of the connecting shaft 83. Multiple staggered brushing components and spiral flushing components are rotatably installed on the outer side of the support ring 85. An internal toothed ring 86 is installed on the inner wall of the filter cylinder 82, which meshes with the top of the brushing components and the spiral flushing components. In this invention, when the filter cylinder 82 rotates rapidly under the action of the stepper motor 18, the internal toothed ring 86 drives the brushing components and the spiral flushing components to rotate against the inner wall of the filter cylinder 82, thus completing the cleaning operation of the inner wall of the filter cylinder 82. Furthermore, when the spiral flushing components rotate, an outward impact liquid flow is formed in the inner wall area of ​​the filter cylinder 82, effectively cleaning the mesh of the filter cylinder 82.

[0044] The scrubbing assembly includes a scrubbing rod 87 and cleaning bristles 810 installed on the outer wall of the scrubbing rod 87. The spiral flushing assembly includes a flushing rod 88, and spirally distributed paddles 89 are provided on the outer side of the flushing rod 88. In this invention, the scrubbing rod 87 rotates rapidly along the inner wall of the filter cylinder 82. The cleaning bristles 810 hit the inner wall of the filter cylinder 82 once for each rotation. The cleaning bristles 810 push out impurities in the holes of the filter cylinder 82 and are flushed by the spirally distributed paddles 89 that follow, achieving rapid cleaning of the surface of the filter cylinder 82 and extending the water recycling time.

[0045] When cleaning chemical equipment, the device is moved to the work site and water is injected into it. The outlet of the high-pressure pump 13 is connected to the nozzle for cleaning the chemical equipment, while the recovery hose 6 is connected to the receiving end of the cleaning liquid of the chemical equipment. The vacuum pump 17 is connected to the primary filter box 2, and a suction negative pressure is formed in the primary filter box 2. The residual liquid is drawn into the primary filter box 2 and undergoes preliminary filtration by the primary filtration mechanism 7. Then it is pumped into the secondary filter box 9 for secondary filtration. At the same time as filtration, the stepper motor 18 is turned on, which drives the secondary filtration mechanism 8 to rotate rapidly. The filtered filter residue is thrown into the filter residue discharge mechanism 16 under the action of centrifugal force. The filtered water enters the drain pipe 20 and is then pumped into the circulating water storage tank 12. During the cleaning of chemical equipment, the cleaning liquid is circulated to avoid contamination of the work site. The cleaning process of chemical equipment is in a closed loop to avoid the emission of harmful substances.

[0046] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A water recycling device for chemical equipment, comprising a movable base (1), wherein a primary filter box (2), a secondary filter box (9) and a circulating water storage tank (12) are sequentially installed on the top of the base (1); a primary filtrate delivery pipe (5) and a primary filtrate delivery pump (4) are installed between the primary filter box (2) and the secondary filter box (9); a circulating water recovery pipe (10) and a circulating water recovery pump (11) are installed between the secondary filter box (9) and the circulating water storage tank (12); a support (14) is installed at the bottom of the circulating water storage tank (12), and a high-pressure pump (13) connected to the circulating water storage tank (12) is installed inside the support (14), characterized in that: The top of the primary filter box (2) is equipped with a primary filter mechanism (7), and the top of the primary filter mechanism (7) is equipped with a recovery hose (6). The top of the base (1) is also equipped with a vacuum pump (17), and the air inlet of the vacuum pump (17) is connected to the primary filter box (2). An intercepting net cylinder (22) is installed at the air inlet of the vacuum pump (17). The bottom of the secondary filter box (9) is equipped with a support shell (15), and a stepper motor (18) is installed inside the support shell (15). The filter chamber (21) and the drain chamber (19) are provided inside. A drain pipe (20) is rotatably installed between the filter chamber (21) and the drain chamber (19), and the bottom end of the drain pipe (20) is connected to a stepper motor (18). A secondary filtration mechanism (8) is installed on the top of the filter chamber (21), and the bottom end of the secondary filtration mechanism (8) is connected to the top of the drain pipe (20). Filter residue discharge mechanisms (16) are installed on both sides of the filter chamber (21), and a filter residue cleaning device is inserted and removed from the top of the filter residue discharge mechanism (16). The top of the drain pipe (20) is provided with a transmission slot, and the bottom of the secondary filtration mechanism (8) is provided with a transmission bolt (84) sleeved on the outside of the transmission slot at the top of the drain pipe (20). The secondary filtration mechanism (8) includes a movable cover plate (81) that is easy to disassemble and assemble, and a connecting shaft (83) is fixedly installed at the bottom of the movable cover plate (81). A filter screen cylinder (82) is rotatably installed at the bottom of the connecting shaft (83). The bottom of the connecting shaft (83) extends into the interior of the filter screen cylinder (82), and the connecting shaft (83) A support ring (85) is fixedly installed on the outside of the filter cylinder (82). Multiple brushing components and spiral flushing components are rotatably installed on the outside of the support ring (85). An internal toothed ring (86) is installed on the inner wall of the filter cylinder (82) and meshes with the top of the brushing component and the spiral flushing component. The brushing component includes a brushing rod (87) and cleaning bristles (810) installed on the outer wall of the brushing rod (87). The spiral flushing component includes a flushing rod (88), and a spirally distributed paddle (89) is provided on the outside of the flushing rod (88).

2. The water recycling device for chemical equipment according to claim 1, characterized in that, The filter residue discharge mechanism (16) includes a discharge shell (161), and a plurality of arc-shaped rods (163) are provided between the discharge shell (161) and the filter chamber (21). A plurality of movable spring pieces (162) are rotatably installed on the outer wall of the arc-shaped rods (163).

3. The water recycling device for chemical equipment according to claim 1, characterized in that, The primary filtration mechanism (7) includes a sealing plate that is easy to disassemble and assemble, and an overflow box (71) is installed at the bottom of the sealing plate, and a primary filter screen (75) is installed in the middle of the overflow box (71).

4. A water recycling device for chemical equipment according to claim 3, characterized in that, The primary filtration mechanism (7) is further provided with a rotating rod (74) that penetrates the top of the primary filter cylinder (75) and an annular cavity (77) installed at the inlet of the primary filtrate conveying pipe (5). The bottom end of the rotating rod (74) is provided with multiple water turbine blades (76) located inside the annular cavity (77). The outer wall of the rotating rod (74) is provided with soft bristle columns (72) that contact the inner wall of the primary filter cylinder (75). The top of the rotating rod (74) is provided with a pusher brush (73) that contacts the outer wall of the primary filter cylinder (75).

Images