Filtering device for scale inhibitor

Abstract

The utility model discloses a scale inhibitor filtering device which comprises a carding tank, a filtering tank, a material carding mechanism, a filtering clamping mechanism and a clamping auxiliary mechanism, and the material carding mechanism comprises a stirring motor, a stirring shaft, carding blades, carding holes and a fixing frame. The filtering clamping mechanism comprises a mounting block, a coarse filtering net, a fine filtering net, a clamping pipe, a clamping rod, an extending groove, a rotating groove, a rotating block, a moving frame and a concave-convex groove, the filtering clamping mechanism comprises a winding block, a winding spring, a winding rod, a lower jacking block, a jacked block, a moving sleeve, a moving groove and a side moving groove, and a stirring motor drives a stirring shaft to achieve efficient and uniform material stirring; the design of carding blades and carding holes can refine and cut materials, the combination of a coarse filter screen and a fine filter screen realizes efficient multi-stage filtration, and the design of a clamping pipe, a clamping rod and a rotating block realizes rapid mounting and dismounting of the filter screens.

Description

Technical Field

[0001] The utility model relates to the technical field of filtration, and more specifically, it relates to a filtration device for scale inhibitors. Background Art

[0002] A filtration device for scale inhibitors is a device specifically designed for purifying and refining scale inhibitors. This device can effectively remove impurities and particulate matter in the scale inhibitor, ensuring the quality and effect of the scale inhibitor.

[0003] In the existing technology, firstly, some devices cannot fully stir the scale inhibitor, which may lead to uneven distribution of materials, unable to cut and refine the scale inhibitor, affecting the subsequent filtration effect. Manual stirring has low efficiency, is difficult to handle a large amount of materials, and cannot ensure the same stirring degree for each batch of materials, resulting in unstable product quality. Secondly, some devices cannot perform multi-stage filtration, affecting the filtration effect. There is a lack of a quick disassembly system, and the filter screen is difficult to fix and replace. Each time the filter screen is replaced or cleaned, a complex disassembly process is required, and it is impossible to ensure a good seal between the filter screen and the tank body, which may lead to leakage. Finally, the filter screen of some devices may become loose during use, making it difficult to accurately adjust the position of the filter screen, and cleaning and replacing the filter screen become difficult and time-consuming. Summary of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] In view of the problems existing in the prior art, the utility model provides a filtration device for scale inhibitors to solve the technical problems mentioned in the background art, such as unable to cut and refine the scale inhibitor, unable to perform multi-stage filtration, and the filter screen is difficult to fix and replace.

[0006] (2) Technical Solutions

[0007] To achieve the above object, the utility model provides the following technical solutions: A filtration device for scale inhibitors includes a combing tank, a filtration tank, a material combing mechanism, a filtration clamping mechanism, and a clamping auxiliary mechanism. The material combing mechanism includes a stirring motor, a stirring shaft, combing blades, combing holes, and a fixing frame. The stirring shaft is installed at the output end of the stirring motor, and the other end of the stirring shaft extends into the combing tank and is rotatably connected with the fixing frame in a limited way. The combing blades are installed on the stirring shaft, and the combing holes are arranged on the combing blades. The filtration clamping mechanism includes a mounting block, a coarse filter screen, a fine filter screen, a clamping pipe, a clamping rod, an insertion groove, a rotation groove, a rotating block, a moving frame, and an uneven groove. The mounting block is arranged on the inner wall of the filtration tank, the coarse filter screen and the fine filter screen are arranged on the mounting block, the rotating block is arranged on the side wall of the clamping rod, the rotating block first drives the clamping rod to move longitudinally in the insertion groove, the rotating block drives the clamping rod to rotate in the rotation groove, the uneven groove is arranged on the side of the clamping rod, and the moving frame horizontally penetrates through the side wall of the clamping pipe.

[0008] The utility model is further arranged such that the filtering and clamping mechanism comprises a winding block, a winding spring, a winding rod, a lower top block, a receiving top block, a moving sleeve, a moving groove and a side moving groove. The winding spring is sleeved on the winding rod, and one end of the winding rod and the winding spring is fixedly connected to the outer surface of the clamping pipe. The winding block rotates and slides on the winding rod, and one end of the winding spring supports the winding block. The lower top block is arranged at the bottom of the winding block. The moving sleeve is longitudinally slidably arranged on the side wall of the clamping pipe. The receiving top block is arranged at the top of the moving sleeve. The lower top block can push the receiving top block to move the moving sleeve. The moving groove is arranged inside the moving sleeve. The side moving grooves are arranged on both sides of the moving groove. The moving frame moves relatively in the moving groove, and both sides of the moving frame are guided and pulled in the side moving grooves.

[0009] The utility model is further arranged such that an installation groove is formed in the side surface of the installation block. Lateral plates are installed on the side surfaces of the coarse filter screen and the fine filter screen. The installation groove on the installation block is arranged with different thicknesses, and the lateral plates of the coarse filter screen and the fine filter screen are respectively fixed in the installation grooves with different thicknesses.

[0010] The utility model is further arranged such that a connecting plate is installed at the bottom end of the side wall of the clamping pipe, and the connecting plate is fixedly installed on the top end surface of the lateral plate. The arrangement of the connecting plate facilitates the installation and cooperation of the device with the clamping pipe.

[0011] The utility model is further arranged such that one end of the clamping rod is rotatably connected to the installation block in a limiting manner, and the other end of the clamping rod extends through the lateral plate and is in quick clamping cooperation with the clamping pipe. The clamping pipe, the clamping rod and the rotating block provide a quick clamping function.

[0012] The utility model is further arranged such that a return spring is installed on the top of the connecting plate, and the other end of the return spring is in cooperation connection with the bottom end surface of the moving sleeve. A threaded ring is arranged on the side wall of the clamping pipe, and the outer end of the threaded ring can be embedded into the side surface of the winding block to fix the winding block on the side wall of the clamping pipe. The arrangement of the return spring facilitates the moving sleeve to return to the initial position.

[0013] The utility model is further arranged such that a flip cover and a support frame are movably arranged on the top end surface of the carding tank. A coarse screen is installed at the open end of the carding tank. The stirring motor is installed on the support frame. The flip cover and the support frame are convenient for adding materials and supporting the stirring motor.

[0014] The utility model is further arranged such that a pressure relief pipe is installed on the side of the filtering tank. A discharge assembly and legs are installed at the bottom of the filtering tank. The discharge assembly and the legs are convenient for discharging the filtered materials and stably supporting.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a filtering device for scale inhibitors, which has the following

[0017] Beneficial effects:

[0018] The utility model is provided with a material combing mechanism. The stirring motor drives the stirring shaft to achieve efficient and uniform material stirring. The design of the combing blades and combing holes can refine and cut the materials, improving the subsequent filtering effect. The fixing frame provides limit support for the stirring shaft, ensuring stable operation for a long time, reducing manual intervention, and improving production efficiency.

[0019] The utility model is provided with a filtering clamping mechanism. The combination of the coarse filter screen and the fine filter screen realizes efficient multi-stage filtering. The design of the clamping pipe, clamping rod and rotating block realizes the quick installation and disassembly of the filter screen. The design of the insertion groove and rotating groove ensures the precise movement and rotation of the clamping rod. The design of the mounting block and side plate ensures good sealing between the filter screen and the tank body.

[0020] The utility model is provided with a clamping auxiliary mechanism. The design of the winding block, winding spring and winding rod provides additional fixing force, increasing the system stability. The design of the winding spring can buffer the impact and extend the service life of the equipment. The design of the moving sleeve and moving groove allows for fine adjustment of the stability of the clamping rod. The return spring ensures that the moving sleeve can quickly return to the initial position, improving the operation efficiency. Description of the drawings

[0021] Figure 1 It is a schematic structural diagram of the whole device of the utility model in the unused state;

[0022] Figure 2 It is a schematic structural diagram of the interior of the device of the utility model;

[0023] Figure 3 It is a schematic structural diagram of the installation method of the coarse filter screen and the fine filter screen of the utility model;

[0024] Figure 4 It is a schematic structural diagram of the filtering clamping mechanism and the clamping auxiliary mechanism of the utility model;

[0025] Figure 5 It is a schematic structural diagram of the rough fixing of the filtering clamping mechanism of the utility model;

[0026] Figure 6 It is a schematic structural diagram of the interior of the filtering clamping mechanism and the clamping auxiliary mechanism of the utility model.

[0027] In the figure: 1, carding tank; 2, filtering tank; 3, stirring motor; 4, stirring shaft; 5, carding blades; 6, carding holes; 7, fixing frame; 8, mounting block; 9, coarse filter screen; 10, fine filter screen; 11, clamping connecting pipe; 12, clamping rod; 13, extending groove; 14, rotating groove; 15, rotating block; 16, moving frame; 17, concave-convex groove; 18, winding block; 19, winding spring; 20, winding rod; 21, lower top block; 22, top-receiving block; 23, moving sleeve; 24, moving groove; 25, side-moving groove; 26, mounting groove; 27, side plate; 28, connecting plate; 29, reset spring; 30, threaded ring; 31, flip cover; 32, support frame; 33, coarse sieve; 34, pressure relief pipe; 35, discharge assembly; 36, support leg. Detailed implementation manners

[0028] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will describe the present invention in detail with reference to the drawings and in combination with the embodiments.

[0029] It should be pointed out that, unless otherwise specified, all the technical and scientific terms used in the present application have the same meanings as those commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0030] In the present invention, unless otherwise stated, the orientations such as "upper, lower" are usually in the directions shown in the drawings, or in the vertical, perpendicular or gravitational directions; similarly, for the convenience of understanding and description, "left, right" are usually in the left and right shown in the drawings; "inside, outside" refer to the inside and outside relative to the contours of the respective components, but the above orientation terms are not used to limit the present invention.

[0031] Please refer to Figures 1-5, A filtering device for a scale inhibitor, comprising a combing tank 1, a filtering tank 2, a material combing mechanism, a filtering clamping mechanism, and a clamping assisting mechanism. The material combing mechanism includes a stirring motor 3, a stirring shaft 4, combing blades 5, combing holes 6, and a fixing frame 7. The stirring shaft 4 is installed at the output end of the stirring motor 3, and the other end of the stirring shaft 4 extends into the combing tank 1 and is rotatably connected with the fixing frame 7 in a limiting manner. The combing blades 5 are installed on the stirring shaft 4, and the combing holes 6 are provided on the combing blades 5. The filtering clamping mechanism includes a mounting block 8, a coarse filter screen 9, a fine filter screen 10, a clamping pipe 11, a clamping rod 12, an insertion groove 13, a rotating groove 14, a rotating block 15, a moving frame 16, and a concave-convex groove 17. The mounting block 8 is arranged on the inner wall of the filtering tank 2, the coarse filter screen 9 and the fine filter screen 10 are arranged on the mounting block 8, the rotating block 15 is arranged on the side wall of the clamping rod 12, the rotating block 15 first drives the clamping rod 12 to move longitudinally in the insertion groove 13, and the rotating block 15 drives the clamping rod 12 to rotate in the rotating groove 14. The concave-convex groove 17 is arranged on the side surface of the clamping rod 12, and the moving frame 16 is horizontally movably penetrated through the side wall of the clamping pipe 11.

[0032] In this embodiment, the stirring motor 3 is started to drive the stirring shaft 4 to rotate. The combing blades 5 on the stirring shaft 4 rotate in the combing tank 1, and the combing holes 6 on the combing blades 5 cut and comb the material. The fixing frame 7 provides support and limitation for the stirring shaft 4 to ensure stable operation. To achieve the rapid installation and disassembly of the coarse filter screen 9 and the fine filter screen 10 with the mounting block 8, the clamping rod 12 longitudinally moves in the insertion groove 13 through the rotating block 15. The clamping rod 12 continues to move, and the rotating block 15 enters the rotating groove 14 to drive the clamping rod 12 to rotate for rough locking. After the clamping rod 12 rotates, the concave-convex groove 17 is made to cooperate with the moving frame 16 by using the clamping assisting mechanism. The moving frame 16 moves horizontally and passes through the side wall of the clamping pipe 11 to achieve re-clamping. The coarse filter screen 9 and the fine filter screen 10 are fixed on the mounting block 8, and the filtering work starts.

[0033] The filtering clamping mechanism includes a winding block 18, a winding spring 19, a winding rod 20, a lower top block 21, a receiving top block 22, a moving sleeve 23, a moving groove 24, and a side moving groove 25. The winding spring 19 is sleeved on the winding rod 20, and one end of the winding rod 20 and the winding spring 19 is fixedly connected to the outer surface of the clamping pipe 11. The winding block 18 rotates and slides on the winding rod 20, and one end of the winding spring 19 supports the winding block 18. The lower top block 21 is arranged at the bottom of the winding block 18. The moving sleeve 23 is longitudinally slidably arranged on the side wall of the clamping pipe 11. The receiving top block 22 is arranged at the top of the moving sleeve 23. The lower top block 21 can push the receiving top block 22 to move the moving sleeve 23. The moving groove 24 is arranged inside the moving sleeve 23. The side moving grooves 25 are arranged on both sides of the moving groove 24. The moving frame 16 moves relatively in the moving groove 24, and both sides of the moving frame 16 are guided and pulled in the side moving grooves 25.

[0034] In this embodiment, the winding block 18 rotates and slides on the winding rod 20, pulling open the winding spring 19. The lower top block 21 pushes the top-receiving block 22, causing the moving sleeve 23 to longitudinally slide on the side wall of the clamping pipe 11. The moving frame 16 moves relative to each other within the moving groove 24, and both sides are guided within the side-shifting groove 25. As the moving sleeve 23 moves, the moving frame 16 moves horizontally, causing the moving frame 16 to extend into the concave-convex groove 17 and fix it again. The return spring 29 provides a return force between the connecting plate 28 and the moving sleeve 23. The threaded ring 30 can be embedded in the side of the winding block 18 to fix the position of the winding block 18.

[0035] Please refer to Figures 1-5 , as a supplementary implementation method of a filter device for a scale inhibitor for the material combing mechanism, the filter clamping mechanism, and the clamping auxiliary mechanism: an installation groove 26 is provided on the side of the installation block 8. Lateral plates 27 are installed on the sides of the coarse filter screen 9 and the fine filter screen 10. The installation groove 26 on the installation block 8 is provided with different thicknesses, and the lateral plates 27 of the coarse filter screen 9 and the fine filter screen 10 are respectively fixed in the installation grooves 26 with different thicknesses. The bottom end of the side wall of the clamping pipe 11 is provided with a connecting plate 28, and the connecting plate 28 is fixedly installed on the top end face of the lateral plate 27. One end of the clamping rod 12 is rotatably connected with the installation block 8 in a limiting manner, and the other end of the clamping rod 12 extends through the lateral plate 27 and is quickly clamped with the clamping pipe 11. A return spring 29 is installed on the top of the connecting plate 28, and the other end of the return spring 29 is connected with the bottom end face of the moving sleeve 23 in a matching manner. A threaded ring 30 is provided on the side wall of the clamping pipe 11, and the outer end of the threaded ring 30 can be embedded in the side of the winding block 18, so that the winding block 18 is fixed on the side wall of the clamping pipe 11. The top end face of the combing tank 1 is movably provided with a flip cover 31 and a support frame 32. A coarse screen 33 is installed at the open end of the combing tank 1. The stirring motor 3 is installed on the support frame 32. A pressure relief pipe 34 is installed on the side of the filter tank 2. A discharge assembly 35 and legs 36 are installed at the bottom of the filter tank 2.

[0036] More specifically, open the flap 31 at the top of the combing tank 1, pour the scale inhibitor raw material to be processed into the combing tank 1, close the flap 31, start the stirring motor 3, the stirring shaft 4 drives the combing blades 5 to rotate, comb and cut the material, the combing holes 6 on the combing blades 5 further refine the material, and the combed material is preliminarily filtered through the coarse screen 33 at the bottom of the combing tank 1. Operate the clamping rod 12 so that it moves and rotates through the insertion groove 13 and the rotation groove 14. The clamping rod 12 cooperates with the moving frame 16 to fix the filtering component. The material is filtered through the coarse filter screen 9 and the fine filter screen 10 in sequence. The installation grooves 26 with different thicknesses ensure the correct installation and fixation of the two filter screens. The winding block 18 slides on the winding rod 20, compresses the winding spring 19, the lower top block 21 pushes the receiving top block 22, the moving sleeve 23 slides on the clamping pipe 11, and the moving frame 16 moves in the moving groove 24 and the side moving groove 25 to assist the clamping process. The filtered material enters the bottom of the filtering tank 2. During the filtering process, if the pressure is too high, the pressure can be released through the pressure relief pipe 34 on the side of the filtering tank 2. After the filtering is completed, the filter screen can be detached for cleaning. After cleaning, the device can carry out the next round of filtering work.

[0037] In summary, when the overall equipment is in use or operation: when the operation of the material combing mechanism is required, the stirring motor 3 is started, driving the stirring shaft 4 to rotate. The combing blades 5 on the stirring shaft 4 rotate in the combing tank 1, and the combing holes 6 on the combing blades 5 cut and comb the material. The fixing frame 7 provides support and limit for the stirring shaft 4 to ensure stable operation.

[0038] When the operation of the filtering clamping mechanism is required, the quick installation and disassembly of the coarse filter screen 9 and the fine filter screen 10 with the mounting block 8 are realized. The clamping rod 12 longitudinally moves in the insertion groove 13 through the rotating block 15. The clamping rod 12 continues to move, and the rotating block 15 enters the rotation groove 14, driving the clamping rod 12 to rotate for rough locking. After the clamping rod 12 rotates, the concave-convex groove 17 is matched with the moving frame 16 by using the clamping auxiliary mechanism, and the moving frame 16 moves horizontally and passes through the side wall of the clamping pipe 11 to realize re-clamping. The coarse filter screen 9 and the fine filter screen 10 are fixed on the mounting block 8, and the filtering work starts.

[0039] When the operation of the clamping auxiliary mechanism is required, the winding block 18 rotates and slides on the winding rod 20, pulling open the winding spring 19. The lower top block 21 pushes the receiving top block 22, causing the moving sleeve 23 to longitudinally slide on the side wall of the clamping pipe 11. The moving frame 16 moves relatively in the moving groove 24, and both sides are guided in the side moving groove 25. As the moving sleeve 23 moves, the moving frame 16 moves horizontally, so that the moving frame 16 extends into the concave-convex groove 17 to re-fix it. The return spring 29 provides a return force between the connecting plate 28 and the moving sleeve 23, and the threaded ring 30 can be embedded in the side of the winding block 18 to fix the position of the winding block 18.

[0040] Open the flap 31 at the top of the combing tank 1, pour the scale inhibitor raw material to be processed into the combing tank 1, close the flap 31, start the stirring motor 3, the stirring shaft 4 drives the combing blades 5 to rotate, comb and cut the material, the combing holes 6 on the combing blades 5 further refine the material, and the combed material is preliminarily filtered through the coarse screen 33 at the bottom of the combing tank 1. Operate the clamping rod 12 so that it moves and rotates through the insertion groove 13 and the rotating groove 14. The clamping rod 12 cooperates with the moving frame 16 to fix the filtering component. The material is filtered through the coarse filter screen 9 and the fine filter screen 10 in sequence. The installation grooves 26 with different thicknesses ensure the correct installation and fixation of the two filter screens. The winding block 18 slides on the winding rod 20, compresses the winding spring 19, the lower top block 21 pushes the top-receiving block 22, the moving sleeve 23 slides on the clamping pipe 11, and the moving frame 16 moves in the moving groove 24 and the side-moving groove 25 to assist the clamping process. The filtered material enters the bottom of the filtering tank 2. During the filtering process, if the pressure is too high, the pressure can be released through the pressure relief pipe 34 on the side of the filtering tank 2. After the filtering is completed, the filter screen can be removed for cleaning. After cleaning, the device can carry out the next round of filtering work.

[0041] In all the solutions mentioned above, for the connection between two components, welding, connection with bolts and nuts, connection with bolts or screws, or other well-known connection methods can be selected according to the actual situation, which will not be elaborated one by one here. For those mentioned above that involve fixed connection, welding is preferably considered. Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A scale inhibitor filtering device, comprising a combing tank (1), a filtering tank (2), a material combing mechanism, a filtering clamping mechanism and a clamping auxiliary mechanism, wherein: The material combing mechanism comprises a stirring motor (3), a stirring shaft (4), combing leaves (5), combing holes (6), and a fixing frame (7); the stirring shaft (4) is mounted on the output end of the stirring motor (3); the other end of the stirring shaft (4) extends into the combing tank (1) and is connected to the fixing frame (7) in a limited rotation manner; the combing leaves (5) are mounted on the stirring shaft (4), and the combing holes (6) are arranged on the combing leaves (5); the filtering clamping mechanism comprises a mounting block (8), a coarse filter screen (9), a fine filter screen (10), a clamping tube (11), a clamping rod (12), an insertion groove (13), a rotating groove (14), A rotating block (15), a moving frame (16) and a concave-convex groove (17); a mounting block (8) is arranged on the inner wall of the filter tank (2); a coarse filter screen (9) and a fine filter screen (10) are arranged on the mounting block (8); the rotating block (15) is arranged on the side wall of the clamping rod (12); the rotating block (15) first drives the clamping rod (12) to move longitudinally in the extending groove (13); the rotating block (15) drives the clamping rod (12) to rotate in the rotating groove (14); the concave-convex groove (17) is arranged on the side of the clamping rod (12); and the moving frame (16) is arranged on the side wall of the clamping pipe (11) for horizontal movement.

2. The antiscalant filtering device according to claim 1, characterized in that: The filtering clamping mechanism comprises a winding block (18), a winding spring (19), a winding rod (20), a lower push block (21), a push block (22), a movable sleeve (23), a movable groove (24) and a lateral displacement groove (25); the winding spring (19) is sleeved on the winding rod (20), and one end of the winding rod (20) and the winding spring (19) are fixedly connected to the outer surface of the clamping tube (11); the winding block (18) rotates and slides on the winding rod (20), one end of the winding spring (19) supports the winding block (18), and the lower push block (21) is arranged on the winding block ( The movable sleeve (23) is longitudinally slidably arranged on the side wall of the clamping tube (11), the top block (22) is arranged on the top of the movable sleeve (23), the lower top block (21) can push the top block (22) to move the movable sleeve (23), the movable groove (24) is arranged inside the movable sleeve (23), the side shift grooves (25) are arranged on both sides of the movable groove (24), the movable frame (16) moves relatively in the movable groove (24), and the two sides of the movable frame (16) are guided and pulled in the side shift grooves (25).

3. The antiscalant filtering device according to claim 1, characterized in that: The side of the mounting block (8) is provided with a mounting groove (26), and the sides of the coarse filter (9) and the fine filter (10) are provided with side plates (27), and the mounting grooves (26) on the mounting block (8) are arranged with different coarseness and fineness, and the side plates (27) of the coarse filter (9) and the fine filter (10) are respectively fixed in the mounting grooves (26) of different coarseness and fineness.

4. The antiscalant filtering device according to claim 1, characterized in that: A connecting plate (28) is installed at the bottom end of the side wall of the clamping tube (11), and the connecting plate (28) is fixedly installed on the top end surface of the lateral plate (27).

5. The antiscalant filtering device according to claim 1, characterized in that: One end of the clamping rod (12) is connected to the mounting block (8) in a limited rotational manner, and the other end of the clamping rod (12) extends through the lateral plate (27) and is quickly clamped with the clamping tube (11).

6. The antiscalant filtering device according to claim 4, characterized in that: A return spring (29) is installed on the top of the connecting plate (28), and the other end of the return spring (29) is matched and connected with the bottom end surface of the moving sleeve (23). A threaded ring (30) is provided on the side wall of the clamping tube (11), and the outer end of the threaded ring (30) can be embedded in the side surface of the winding block (18), so that the winding block (18) is fixed on the side wall of the clamping tube (11).

7. The antiscalant filtering device according to claim 1, characterized in that: The top end surface of the combing tank (1) is movably provided with a flip cover (31) and a support frame (32), the open end of the combing tank (1) is provided with a coarse screen (33), and the stirring motor (3) is installed on the support frame (32).

8. The antiscalant filtering device according to claim 1, characterized in that: A pressure relief pipe (34) is installed on the side of the filter tank (2), and a discharge assembly (35) and a support leg (36) are installed on the bottom of the filter tank (2).

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