Comb-shaped water retaining partition wall of flocculation sedimentation tank and construction method thereof

Abstract

The invention relates to the technical field of comb-type water-retaining partition walls of flocculation sedimentation tanks, and specifically to a comb-type water-retaining partition wall of a flocculation sedimentation tank and a construction method thereof, wherein the comb-type water-retaining partition wall of a flocculation sedimentation tank comprises: a comb-type water-retaining partition wall, a water-retaining groove, a walking track, a horizontal walking operating table, a lifting bracket, a lifting device, a folding plate and a vertical lifting component; the beneficial effects are: the anti-skid grooves provided on the surfaces of the first lifting outer plate and the second lifting outer plate prevent the folding plate from sliding inside the first lifting outer plate and the second lifting outer plate, and the lifting ring rises to drive the guide limit block to move upward inside the guide limit groove, and the top holding block is driven to move upward by the steel wire rope, so that the top holding block drives the anti-skid clamping block to move outward through the top holding inclined surface, and the anti-skid clamping blocks provided on the surfaces of the first lifting outer plate and the second lifting outer plate cooperate with each other to clamp and limit the folding plate, further ensuring the vertical stability of the folding plate during lifting, so that the folding plate falls vertically to the bottom of the sedimentation tank.

Description

Technical Field

[0001] The invention relates to the technical field of comb-type water retaining partition walls of flocculation sedimentation tanks, in particular to a comb-type water retaining partition wall of a flocculation sedimentation tank and a construction method thereof. Background Art

[0002] China's economy is in a stage of rapid development. Flocculation is a very important process in water treatment plants, and concrete folded plate installation is the focus of the flocculation process.

[0003] The existing concrete folding plate installation scheme is to fix the angle steel groove on the pool wall for installation. The traditional asynchronous folding plate and flat concrete folding plate installation method is to use angle steel to fix the folding plate. Since the flocculation tank is always immersed in water, the rear steel components are very easy to rot, have poor durability and affect the water quality. This method has poor durability. Once an angle steel fixing of each set of folding plates falls off, all the concrete folding plates thereon will fall off, bringing great risks to subsequent maintenance and operation. The concrete folding plates are embedded in the grooves reserved on both sides of the water retaining partition wall, which can ensure the durability of the folding plate installation and requires a folding plate lifting device.

[0004] When the current lifting device lifts the folding plate, the folding plate must be lowered to the installation position in a nearly vertical state above the groove position of the partition wall, otherwise it will be stuck on the partition wall and cannot be lifted. The existing folding plate is lifted by tying the folding plate with a lifting rope, which makes the folding plate easy to tilt and cannot ensure that the folding plate is in a vertical state. Summary of the invention

[0005] The object of the present invention is to provide a comb-shaped water retaining partition wall of a flocculation sedimentation tank and a construction method thereof, so as to solve the problem that a folding plate is easily stuck inside the partition wall when being hoisted.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A comb-shaped water retaining partition wall of a flocculation sedimentation tank, the comb-shaped water retaining partition wall of a flocculation sedimentation tank comprising:

[0008] The comb-shaped water retaining partition wall is set inside the sedimentation tank and divides the internal space of the sedimentation tank evenly;

[0009] Water retaining grooves are provided on the surfaces of both sides of the comb-shaped water retaining partition wall;

[0010] The walking track is overlapped on the comb-shaped water retaining partition wall and the sedimentation tank, and there are two sets of them, which are in the shape of an "I";

[0011] The horizontal walking operating platform is set above two sets of walking tracks;

[0012] The lifting bracket is fixed on the upper surface of the horizontal walking operating table;

[0013] The lifting device is arranged above the lifting bracket, and a rotation limiting member is arranged between the lifting device and the lifting bracket;

[0014] The folding plate is arranged above the horizontal walking operation platform and is transported to the inner bottom end of the sedimentation tank through the lifting device; and

[0015] The vertical lifting member includes a first lifting outer plate, a second lifting outer plate, a plug-in member and a connecting lifting member. The first lifting outer plate is arranged on the outer side of one end of the folding plate, and the second lifting outer plate is arranged on the outer side of the other end of the folding plate. Both the first lifting outer plate and the second lifting outer plate are in a "C" - shaped structure. There are multiple groups of the second lifting outer plate and the first lifting outer plate, and one group of folding plates is matched with two groups of the first lifting outer plates and the second lifting outer plates. The plug-in member is arranged on the surfaces of the first lifting outer plate and the second lifting outer plate and limits and fixes the first lifting outer plate and the second lifting outer plate. The connecting lifting member is arranged on the surface of the second lifting outer plate or the first lifting outer plate and cooperates with the second lifting outer plate and the first lifting outer plate to vertically limit the folding plate when lifting.

[0016] Preferably, the rotation limiting member includes a rotation collar, a rotating shaft, a rotation limiting groove and a rotation limiting block that cooperates with the rotation limiting groove. The rotation collar is arranged on the surface of the lifting device and is in a circular ring structure. The rotating shaft is fixed on the top surface of the lifting bracket and is in a "T" - shaped structure. The rotation collar is sleeved on the outer side of the rotating shaft. The rotation limiting groove is opened on the surface of the rotating shaft and is in an arc - shaped structure. The rotation limiting block is fixed on the inner wall of the rotation collar and is arranged inside the rotation limiting groove. The rotation limiting groove and the rotation limiting block cooperate to limit the rotation of the lifting device, and the maximum rotation angle is 180 degrees.

[0017] Preferably, the plug - in member includes a plug - in slot, a plug - in block that cooperates with the plug - in slot, a plug - in limiting slot, a plug - in limiting block that cooperates with the plug - in limiting slot, a limiting movable slot, a linkage member and a reset member. The plug - in slot is opened on the upper and lower surfaces of the first lifting outer plate and has a cross - section in a "C" - shaped structure. The plug - in block is fixed on the upper and lower surfaces of the second lifting outer plate. There are multiple groups of the plug - in slot and the plug - in block. One end of the first lifting outer plate cooperates with two groups of plug - in slots, and one end of the second lifting outer plate cooperates with two groups of plug - in blocks. The plug - in limiting slot is opened on the surface of the plug - in block, and the limiting movable slot is opened on the surface of the plug - in slot. Both the plug - in limiting slot and the limiting movable slot have a cross - section in a "C" - shaped structure. The plug - in limiting block is arranged inside the limiting movable slot.

[0018] Preferably, the linkage member includes a limiting connecting rod, a connecting rod limiting groove, a disassembly button and a plug - in inclined surface. The connecting rod limiting groove is opened inside the first lifting outer plate. The limiting connecting rod is in a "C" - shaped structure, and the middle end of the limiting connecting rod is arranged inside the connecting rod limiting groove. One end of the limiting connecting rod is connected to the plug - in limiting block, and the other end is connected to the disassembly button. The plug - in inclined surface is opened on the surface of the plug - in block, and the plug - in inclined surfaces opened on the surfaces of the two plug - in blocks at the same end of the second lifting outer plate face each other.

[0019] Preferably, the reset member includes a disassembly groove and a limiting spring. The disassembly groove is formed on both side surfaces of the first lifting outer plate, and its cross-section is in a "C" shape. One end of the limiting spring is connected to the disassembly groove, and the other end is connected to the disassembly button. The limiting spring is always in a compressed state, and the disassembly button held by the limiting spring is limited by the cooperation of the limiting connecting rod and the connecting rod limiting groove.

[0020] Preferably, the connecting and lifting member includes a lifting connecting plate, a lifting fixing block arranged on the surface of the lifting connecting plate, a lifting ring, a guiding and limiting member, an anti-slip clamping member, and a linkage supporting member. There are two groups of lifting connecting plates. One group of lifting connecting plates are respectively connected to the two groups of first lifting outer plates at both ends, and the included angle between the lifting connecting plate and the first lifting outer plate is 90 degrees. The other group of lifting connecting plates are respectively connected to the two groups of second lifting outer plates at both ends, and the included angle between the lifting connecting plate and the second lifting outer plate is 90 degrees. And the top surface of the lifting connecting plate is flush with the top surface of the second lifting outer plate or the first lifting outer plate. The lifting fixing block is fixed in the middle of the top surface of the lifting connecting plate, and the included angle between the lifting fixing block and the lifting connecting plate is 90 degrees. The lifting ring is arranged above the lifting fixing block.

[0021] Preferably, the guiding and limiting member includes a guiding and limiting groove and a guiding and limiting block that cooperates with the guiding and limiting groove. The guiding and limiting groove is formed on the surface of the lifting fixing block. The guiding and limiting block is in a "T" shape, and one end is inserted into the guiding and limiting groove, and the other end is connected to the lifting ring. And the guiding and limiting groove and the guiding and limiting block cooperate to vertically limit the lifting ring.

[0022] Preferably, the anti-slip clamping member includes a stretching spring, an anti-slip clamping block connected to one end of the stretching spring, an anti-slip fixing groove connected to the other end, and an anti-slip groove. The anti-slip groove is formed on the surface of the first lifting outer plate or the second lifting outer plate close to the folding plate. The anti-slip fixing groove is formed in the middle of the surface of the first lifting outer plate or the second lifting outer plate close to the folding plate, and its cross-section is in a "C" shape. There are multiple groups of stretching springs, and one group of anti-slip clamping blocks cooperate with six groups of stretching springs, and the distance between the stretching spring and the longitudinal center plane of the folding plate is greater than zero.

[0023] Preferably, the linkage supporting member includes a supporting spring, a supporting groove connected to one end of the supporting spring, a supporting block connected to the other end, and a steel wire rope. The supporting groove is formed on the bottom surface of the anti-slip fixing groove, and its cross-section is in a "C" shape, and the length of the supporting groove is greater than the length of the stretching spring. The supporting spring is always in a stretched state. The end of the supporting block away from the supporting spring is provided with a supporting inclined surface, and the supporting inclined surface faces the anti-slip clamping block. One end of the steel wire rope is connected to the middle of the top of the supporting block, and the other end is connected to the guiding and limiting block, and the upper height of the steel wire rope is lower than the height of the steel wire rope.

[0024] A construction method for a comb-shaped water retaining partition wall in a flocculation sedimentation tank includes the following steps:

[0025] Measurement and layout: lay out the position of the comb-shaped water retaining partition wall on the ground of the flocculation tank according to the design and construction drawings, the position and size of the water retaining groove on each comb-shaped water retaining partition wall, and the size and position of the water hole on the comb-shaped water retaining partition wall;

[0026] Steel bar installation: install steel bars on the comb-shaped water retaining partition wall and water retaining groove, eliminate the influence of the partition wall steel bars on the formwork of the water retaining groove, ensure the thickness of the steel bar protective layer and ensure the cross-sectional accuracy of the water retaining groove;

[0027] Aluminum formwork installation, concrete pouring, partition wall formwork removal: The comb-shaped water-retaining partition wall aluminum film is installed in sequence according to the formwork drawing, and the release agent is evenly applied. After the installation of the comb-shaped water-retaining partition wall aluminum film is completed, the laser level is used in conjunction with the level to ensure that the upper end of the comb-shaped water-retaining partition wall aluminum film is on the same horizontal plane, and the partition wall groove mold, water hole position size and partition verticality are re-measured. After acceptance, the partition wall concrete is poured and the formwork is removed one day later to ensure that there are no missing edges or corners;

[0028] Install the folding plate lifting device: first lay the walking track on the comb-shaped water retaining partition wall and the top surface of the water retaining groove, then place the horizontal walking operating platform on the walking track, fix the lifting bracket on the top surface of the horizontal walking operating platform, rotate the lifting device through the rotating shaft and connect it to the top of the lifting bracket, and the rotation limit groove and the rotation limit block cooperate to limit the rotation of the lifting device, and the maximum rotation angle is 180 degrees;

[0029] Folding plate installation: first, place the two groups of first lifting outer panels connected by the lifting connecting plate in the center of the outer surface of one group of folding plates, then place the two groups of second lifting outer panels connected by the other group of lifting connecting plates on the surface of the folding plate away from the side of the first lifting outer panel, and push the second lifting outer panel toward the first lifting outer panel, so that the plug-in block enters the interior of the connecting rod limiting groove, and the plug-in inclined surface contacts the plug-in limiting block, thereby pressing the plug-in limiting block into the interior of the limiting movable groove. At this time, the disassembly button part is pulled into the disassembly groove through the limiting connecting rod until the plug-in block completely enters the interior of the plug-in groove, and the limiting spring holds the disassembly button to extend out of the first lifting outer panel, then the plug-in limiting block is driven by the limiting connecting rod to extend out of the limiting movable groove and enter the interior of the plug-in limiting groove, thereby limiting and fixing the plug-in block, thereby connecting the second lifting outer panel with the first lifting outer panel, and then lifting a group of folding plates through the lifting device and the lifting ring. At this time, the folding plate is vertically located on the first lifting outer panel. The first and second lifting outer plates are provided with anti-skid grooves on the surfaces of the first and second lifting outer plates to prevent the folding plates from sliding inside the first and second lifting outer plates, and the lifting ring rises to drive the guide limit block to move upward inside the guide limit groove, thereby driving the top holding block to move upward through the wire rope, so that the top holding block drives the anti-skid clamping block to move outward through the top holding inclined surface, and the anti-skid clamping blocks arranged on the surfaces of the first and second lifting outer plates cooperate with each other to clamp and limit the folding plates, further ensuring the vertical stability of the folding plates during lifting, so that the folding plates fall vertically to the bottom of the sedimentation tank, and then by pressing the disassembly button, the plug-in limit block is driven into the limited movable groove through the limit connecting rod, and the limit fixation of the plug-in block is cancelled, so that the first and second lifting outer plates are separated conveniently, and the limit spring holds the disassembly button to reset the disassembly button, and repeats the above operation, which is convenient for vertically and stably lifting multiple groups of folding plates;

[0030] Smoothing the gaps: The bottom of all folding plates needs to be filled with waterproof mortar. The bottom of the folding plate needs to be in close contact with the bottom of the pool. After installing the folding plate, smooth the bottom of the folding plate with mm cement mortar to prevent short flow.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The present invention pushes the second lifting outer plate toward the first lifting outer plate so that the plug-in block enters the connecting rod limiting groove, the plug-in block completely enters the plug-in groove, the limiting spring holds the disassembly button through the limiting connecting rod to drive the plug-in limiting block to extend out of the limiting movable groove and enter the plug-in limiting groove, the plug-in block is limited and fixed, and then a group of folding plates are lifted by connecting the lifting device with the lifting ring. At this time, the folding plate is vertically located inside the first lifting outer plate and the second lifting outer plate, and the anti-skid grooves on the surfaces of the first lifting outer plate and the second lifting outer plate prevent the folding plate from sliding inside the first lifting outer plate and the second lifting outer plate, and the lifting ring rises to drive the guide limit block to move in the guide limit The inside of the groove moves upward, and the top holding block is driven to move upward by the wire rope, so that the top holding block drives the anti-skid clamping block to move outward through the top holding inclined surface, and the anti-skid clamping blocks arranged on the surface of the first lifting outer plate and the second lifting outer plate cooperate with each other to clamp the folding plate to limit the position, further ensuring the vertical stability of the folding plate during lifting, so that the folding plate falls vertically to the bottom of the sedimentation tank, and by pressing the disassembly button, the plug-in limit block is driven into the inside of the limit movable groove through the limit connecting rod, and the limit fixation of the plug-in block is cancelled, thereby separating the first lifting outer plate from the second lifting outer plate, and the limit spring holds the disassembly button to reset the disassembly button, which is convenient for vertical and stable lifting of the folding plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0034] Figure 2 for Figure 1 A magnified schematic diagram of the structure at position A;

[0035] Figure 3 for Figure 2 A magnified schematic diagram of the structure at B;

[0036] Figure 4 It is a schematic diagram of the cross-sectional three-dimensional structure of the plug connector of the present invention;

[0037] Figure 5 It is a partial three-dimensional structural schematic diagram of the plug connector of the present invention;

[0038] Figure 6 It is a schematic diagram of the three-dimensional structure of the first hoisting outer panel and the second hoisting outer panel of the present invention;

[0039] Figure 7 It is a partial cross-sectional three-dimensional structural schematic diagram of the first hoisting outer panel of the present invention;

[0040] Figure 8 for Figure 7 A magnified schematic diagram of the structure at C;

[0041] Fig. 9 for Figure 7 A magnified schematic diagram of the structure at D;

[0042] Fig.10 for Figure 7 An enlarged schematic diagram of the structure at E;

[0043] Fig.11 It is a schematic diagram of the cross-sectional three-dimensional structure of the rotation limiter of the present invention;

[0044] Fig.12 It is a schematic diagram of the three-dimensional structure of the comb-shaped water retaining partition wall aluminum film of the present invention.

[0045] In the figure: sedimentation tank 1, comb-shaped water retaining partition wall 2, water retaining groove 3, walking track 4, horizontal walking operating table 5, lifting bracket 6, folding plate 7, first lifting outer plate 8, rotating ring 9, rotating shaft 10, lifting device 11, second lifting outer plate 12, disassembly button 13, lifting connecting plate 14, lifting fixing block 15, lifting ring 16, limit spring 17, disassembly groove 18, limit connecting rod 19, connecting rod limit groove 20, plug-in groove 2 1. Plug-in block 22, plug-in limit block 23, plug-in limit groove 24, plug-in inclined surface 25, anti-skid groove 26, anti-skid clamping block 27, anti-skid fixing groove 28, guide limit groove 29, guide limit block 30, steel wire rope 31, stretching spring 32, top holding block 33, top holding groove 34, top holding spring 35, top holding inclined surface 36, rotation limit groove 37, rotation limit block 38, comb-shaped water retaining partition wall aluminum film 39, limit movable groove 40. DETAILED DESCRIPTION

[0046] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0048] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other.

[0050] See also Figures 1 to 12 , the present invention provides a technical solution:

[0051] A comb-shaped water retaining partition wall of a flocculation sedimentation tank, the comb-shaped water retaining partition wall of a flocculation sedimentation tank comprising:

[0052] The comb-shaped water retaining partition wall 2 is arranged inside the sedimentation tank 1 and divides the internal space of the sedimentation tank 1 evenly;

[0053] The water retaining grooves 3 are provided on the surfaces of both sides of the comb-shaped water retaining partition wall 2;

[0054] The walking track 4 is overlapped above the comb-shaped water retaining partition wall 2 and the sedimentation tank 1, and is provided with two groups in an "I"-shaped structure;

[0055] A horizontal walking operating platform 5 is arranged above the two sets of walking tracks 4;

[0056] A lifting bracket 6 is fixed on the upper end surface of the horizontal walking operating platform 5;

[0057] The lifting device 11 is arranged above the lifting bracket 6, and a rotation limiter is arranged between the lifting device 11 and the lifting bracket 6;

[0058] The folding plate 7 is arranged above the horizontal walking operating platform 5 and is transported to the bottom of the sedimentation tank 1 through the lifting device 11; and

[0059] Vertical lifting member, including a first lifting outer plate 8, a second lifting outer plate 12, a plug-in member and a connecting lifting member. The first lifting outer plate 8 is arranged on the outer side of one end of the folding plate 7, and the second lifting outer plate 12 is arranged on the outer side of the other end of the folding plate 7. Both the first lifting outer plate 8 and the second lifting outer plate 12 are in a "C" - shaped structure. There are multiple groups of the second lifting outer plate 12 and the first lifting outer plate 8, and one group of folding plates 7 is matched with two groups of the first lifting outer plates 8 and the second lifting outer plates 12. The plug-in member is arranged on the surfaces of the first lifting outer plate 8 and the second lifting outer plate 12, and limits and fixes the first lifting outer plate 8 and the second lifting outer plate 12. The connecting lifting member is arranged on the surface of the second lifting outer plate 12 or the first lifting outer plate 8, and cooperates with the second lifting outer plate 12 and the first lifting outer plate 8 to vertically limit the folding plate 7 when lifting.

[0060] Preferably, the rotation limiting member includes a rotating collar 9, a rotating shaft 10, a rotating limiting groove 37 and a rotating limiting block 38 that cooperates with the rotating limiting groove 37. The rotating collar 9 is arranged on the surface of the lifting device 11 and is in a circular ring structure. The rotating shaft 10 is fixed on the top surface of the lifting bracket 6 and is in a "T" - shaped structure. The rotating collar 9 is sleeved outside the rotating shaft 10. The rotating limiting groove 37 is opened on the surface of the rotating shaft 10 and is in an arc - shaped structure. The rotating limiting block 38 is fixed on the inner wall of the rotating collar 9 and is arranged inside the rotating limiting groove 37. The rotating limiting groove 37 and the rotating limiting block 38 cooperate to limit the rotation of the lifting device 11, and the maximum rotation angle is 180 degrees.

[0061] Preferably, the plug - in member includes a plug - in groove 21, a plug - in block 22 that cooperates with the plug - in groove 21, a plug - in limiting groove 24, a plug - in limiting block 23 that cooperates with the plug - in limiting groove 24, a limiting movable groove 40, a linkage member and a reset member. The plug - in groove 21 is opened on the upper and lower surfaces of the first lifting outer plate 8, and the cross - section is in a "C" - shaped structure. The plug - in block 22 is fixed on the upper and lower surfaces of the second lifting outer plate 12. There are multiple groups of the plug - in groove 21 and the plug - in block 22. One end of the first lifting outer plate 8 cooperates with two groups of plug - in grooves 21, and one end of the second lifting outer plate 12 cooperates with two groups of plug - in blocks 22. The plug - in limiting groove 24 is opened on the surface of the plug - in block 22, and the limiting movable groove 40 is opened on the surface of the plug - in groove 21. The cross - sections of both the plug - in limiting groove 24 and the limiting movable groove 40 are in a "C" - shaped structure. The plug - in limiting block 23 is arranged inside the limiting movable groove 40.

[0062] Preferably, the linkage member includes a limit link 19, a link limit groove 20, a disassembly button 13, and an insertion inclined surface 25. The link limit groove 20 is formed inside the first hoisting outer plate 8. The limit link 19 is in a "C" - shaped structure, and the middle end of the limit link 19 is arranged inside the link limit groove 20. One end of the limit link 19 is connected to the insertion limit block 23, and the other end is connected to the disassembly button 13. The insertion inclined surface 25 is formed on the surface of the insertion block 22, and the insertion inclined surfaces 25 formed on the surfaces of the two insertion blocks 22 at the same end of the second hoisting outer plate 12 are arranged facing each other.

[0063] Preferably, the reset member includes a disassembly groove 18 and a limit spring 17. The disassembly groove 18 is formed on both side surfaces of the first hoisting outer plate 8 and has a cross - section in a "C" - shaped structure. One end of the limit spring 17 is connected to the disassembly groove 18, and the other end is connected to the disassembly button 13. The limit spring 17 is always in a compressed state, and the disassembly button 13 held by the limit spring 17 is limited by the cooperation of the limit link 19 and the link limit groove 20.

[0064] Preferably, the connecting and hoisting member includes a hoisting connecting plate 14, a hoisting fixing block 15 arranged on the surface of the hoisting connecting plate 14, a lifting ring 16, a guiding and limiting member, an anti - slip clamping member, and a linkage pushing member. There are two groups of hoisting connecting plates 14. One group of hoisting connecting plates 14 are respectively connected to the two first hoisting outer plates 8 at both ends, and the angle between the hoisting connecting plate 14 and the first hoisting outer plate 8 is 90 degrees. The other group of hoisting connecting plates 14 are respectively connected to the two second hoisting outer plates 12 at both ends, and the angle between the hoisting connecting plate 14 and the second hoisting outer plate 12 is 90 degrees. The top surface of the hoisting connecting plate 14 is flush with the top surface of the second hoisting outer plate 12 or the first hoisting outer plate 8. The hoisting fixing block 15 is fixed in the middle of the top surface of the hoisting connecting plate 14, and the angle between the hoisting fixing block 15 and the hoisting connecting plate 14 is 90 degrees. The lifting ring 16 is arranged above the hoisting fixing block 15.

[0065] Preferably, the guiding and limiting member includes a guiding and limiting groove 29 and a guiding and limiting block 30 that cooperates with the guiding and limiting groove 29. The guiding and limiting groove 29 is formed on the surface of the hoisting fixing block 15. The guiding and limiting block 30 is in a "T" - shaped structure, and one end is inserted into the guiding and limiting groove 29, and the other end is connected to the lifting ring 16. The guiding and limiting groove 29 and the guiding and limiting block 30 cooperate to vertically limit the lifting ring 16.

[0066] Preferably, the anti-slip clamping member includes a tension spring 32, an anti-slip clamping block 27 connected to one end of the tension spring 32, an anti-slip fixing groove 28 connected to the other end, and an anti-slip groove 26. The anti-slip groove 26 is formed on the surface of the first hoisting outer plate 8 or the second hoisting outer plate 12 close to the folding plate 7. The anti-slip fixing groove 28 is formed in the middle of the surface of the first hoisting outer plate 8 or the second hoisting outer plate 12 close to the folding plate 7, and has a cross-section in a "C" shape. A plurality of groups of tension springs 32 are provided, and one group of anti-slip clamping blocks 27 cooperate with six groups of tension springs 32, and the distance between the tension spring 32 and the longitudinal center plane of the folding plate 7 is greater than zero.

[0067] Preferably, the linkage holding member includes a holding spring 35, a holding groove 34 connected to one end of the holding spring 35, a holding block 33 connected to the other end, and a steel wire rope 31. The holding groove 34 is formed on the bottom surface of the anti-slip fixing groove 28, and has a cross-section in a "C" shape, and the length of the holding groove 34 is greater than the length of the tension spring 32. The holding spring 35 is always in a stretched state. A holding inclined surface 36 is formed at one end of the holding block 33 away from the holding spring 35, and the holding inclined surface 36 is arranged towards the anti-slip clamping block 27. One end of the steel wire rope 31 is connected to the center of the top end of the holding block 33, and the other end is connected to the guiding and limiting block 30, and the height of the upper end of the steel wire rope 31 is lower than the height of the steel wire rope 31.

[0068] A construction method for a comb-shaped water retaining partition wall of a flocculation sedimentation tank includes the following steps:

[0069] Measurement and layout: According to the design construction drawing, the position of the comb-shaped water retaining partition wall 2, the positions and dimensions of the 6 water retaining grooves 3 on each comb-shaped water retaining partition wall 2, and the dimensions and positions of the water passing holes on the comb-shaped water retaining partition wall 2 are marked on the ground of the flocculation tank;

[0070] Steel bar installation: Install steel bars at the comb-shaped water retaining partition wall 2 and the water retaining grooves 3, eliminating the influence of the partition wall steel bars on the formwork of the water retaining grooves 3, ensuring the thickness of the steel bar protection layer and at the same time ensuring the cross-sectional accuracy of the water retaining grooves 3;

[0071] Aluminum formwork installation, concrete pouring, and partition wall formwork removal: The comb-shaped water retaining partition wall aluminum form 39 is installed in sequence according to the formwork layout drawing, and the release agent is evenly applied. After the installation of the comb-shaped water retaining partition wall aluminum form 39 is completed, the laser level and the level are used to ensure that the upper mouths of the comb-shaped water retaining partition wall aluminum form 39 are on the same horizontal plane.复测 the position dimensions of the partition wall groove form and the water passing holes and the verticality of the partition wall. After passing the acceptance, pour the partition wall concrete and remove the formwork one day later to ensure no corners are chipped or broken;

[0072] It should be noted that there is a small error in the original text in item . "复测" should be "Re-measure". The above translation has been corrected accordingly.Install the folding plate lifting device: first, lay the walking track 4 on the comb-shaped water retaining partition wall 2 and the top surface of the water retaining groove 3, then place the horizontal walking operating platform 5 on the walking track 4, fix the lifting bracket 6 on the top surface of the horizontal walking operating platform 5, and rotate the lifting device 11 to connect it above the lifting bracket 6 through the rotating shaft 10, and the rotation limit groove 37 cooperates with the rotation limit block 38 to limit the rotation of the lifting device 11, and the maximum rotation angle is 180 degrees;

[0073] Folding plate installation: first, place the two groups of first hoisting outer plates 8 connected by the hoisting connecting plate 14 in the center of the outer surface of one group of folding plates 7, then place the two groups of second hoisting outer plates 12 connected by the other group of hoisting connecting plates 14 on the side surface of the folding plate 7 away from the first hoisting outer plate 8, and push the second hoisting outer plate 12 toward the first hoisting outer plate 8, so that the plug-in block 22 enters the inside of the connecting rod limiting groove 20, and the plug-in inclined surface 25 contacts the plug-in limiting block 23, thereby pressing the plug-in limiting block 23 into the inside of the limiting movable groove 40. At this time, the disassembly button 13 is partially pulled into the disassembly groove 18 through the limiting connecting rod 19. The first lifting outer panel 8 is inserted into the first lifting outer panel 8, and the first lifting outer panel 8 is inserted into the first lifting outer panel 8. The second lifting outer panel 12 is connected to the first lifting outer panel 8 by the limiting connecting rod 19, and then the second lifting outer panel 12 is connected to the first lifting outer panel 8 by the lifting device 11. Then, the lifting device 11 is connected to the lifting ring 16 to lift a group of folding plates 7. At this time, the folding plates 7 are vertically located inside the first lifting outer panel 8 and the second lifting outer panel 12. The anti-skid groove 26 prevents the folding plate 7 from sliding inside the first hoisting outer plate 8 and the second hoisting outer plate 12, and the lifting ring 16 rises to drive the guide limit block 30 to move upward inside the guide limit groove 29, thereby driving the top holding block 33 to move upward through the wire rope 31, so that the top holding block 33 drives the anti-skid clamping block 27 to move outward through the top holding inclined surface 36, and the anti-skid clamping blocks 27 arranged on the surfaces of the first hoisting outer plate 8 and the second hoisting outer plate 12 cooperate with each other to clamp and limit the folding plate 7, further ensuring the vertical stability of the folding plate 7 during lifting, so that the folding plate 7 falls vertically to the bottom of the sedimentation tank 1, and then passes Press the disassembly button 13, and the plug-in limit block 23 is driven to enter the limit movable groove 40 through the limit connecting rod 19, and the limit fixation of the plug-in block 22 is cancelled, so as to facilitate the separation of the first hoisting outer plate 8 and the second hoisting outer plate 12, and the limit spring 17 supports the disassembly button 13 to reset the disassembly button 13, and repeats the above operation, so as to facilitate the vertical and stable lifting of multiple groups of folding plates 7, and facilitate the lifting, positioning, correction and reinforcement of the internal folding plates 7 of the comb-shaped water retaining partition wall 2, thereby ensuring the hydraulic jet formed by the spoiler mechanism, the micro-vortex turbulence, the corner vortex comprehensive effect and the flocculent net capture effect formed by the vertical flow;

[0074] Smoothing the gaps: The bottom of all folding plates 7 needs to be caulked with 1:2 waterproof mortar. The bottom of the folding plate 7 needs to be in close contact with the bottom of the pool. After installing the folding plate 7, smooth the bottom of the folding plate 7 with 20mm cement mortar to prevent short-circuiting.

[0075] The present invention lays a walking track 4 on the top surface of a comb-shaped water retaining partition wall 2 and a water retaining groove 3, and then places a horizontal walking operating platform 5 above the walking track 4, and a lifting bracket 6 is fixed on the top surface of the horizontal walking operating platform 5. The lifting device 11 is rotatably connected to the top of the lifting bracket 6 through a rotating shaft 10, and the rotation limit groove 37 cooperates with the rotation limit block 38 to limit the rotation of the lifting device 11, and the maximum rotation angle is one hundred and eighty degrees.

[0076] By placing the two groups of first hoisting outer panels 8 connected by the hoisting connecting plates 14 in the center of the outer surface of one group of folding plates 7, and then placing the two groups of second hoisting outer panels 12 connected by the other group of hoisting connecting plates 14 on the side surface of the folding plate 7 away from the first hoisting outer panel 8, and pushing the second hoisting outer panel 12 toward the first hoisting outer panel 8, the plug-in block 22 enters the interior of the connecting rod limiting groove 20, and the plug-in inclined surface 25 contacts the plug-in limiting block 23, so that the plug-in limiting block 23 is pressed into the interior of the limiting movable groove 40. At this time, the disassembly button 13 is partially pulled out by the limiting connecting rod 19. Move to the inside of the disassembly groove 18 until the plug-in block 22 completely enters the plug-in groove 21, and the limit spring 17 holds the disassembly button 13 to extend out of the first hoisting outer panel 8, and the plug-in limit block 23 is driven by the limit connecting rod 19 to extend out of the limit movable groove 40 and enter the plug-in limit groove 24, thereby limiting and fixing the plug-in block 22, thereby connecting the second hoisting outer panel 12 with the first hoisting outer panel 8, and then lifting a group of folding plates 7 through the lifting device 11 and the lifting ring 16. At this time, the folding plates 7 are vertically located inside the first hoisting outer panel 8 and the second hoisting outer panel 12.

[0077] The anti-skid grooves 26 provided on the surfaces of the first hoisting outer plate 8 and the second hoisting outer plate 12 prevent the folding plate 7 from sliding inside the first hoisting outer plate 8 and the second hoisting outer plate 12, and the lifting ring 16 rises to drive the guide limit block 30 to move upward inside the guide limit groove 29, thereby driving the top holding block 33 to move upward through the wire rope 31, so that the top holding block 33 drives the anti-skid clamping block 27 to move outward through the top holding inclined surface 36, and the anti-skid clamping blocks 27 provided on the surfaces of the first hoisting outer plate 8 and the second hoisting outer plate 12 cooperate with each other to clamp and limit the folding plate 7, further ensuring the vertical stability of the folding plate 7 during lifting, so that the folding plate 7 falls vertically to the bottom of the sedimentation tank 1.

[0078] When it is necessary to disassemble the first hoisting outer panel 8 and the second hoisting outer panel 12, by pressing the disassembly button 13, the plug-in limit block 23 is driven to enter the limit movable groove 40 through the limit connecting rod 19, and the limit fixation of the plug-in block 22 is cancelled, thereby separating the first hoisting outer panel 8 from the second hoisting outer panel 12, and the limit spring 17 holds the disassembly button 13 to reset the disassembly button 13, and repeats the above operation, which facilitates the vertical and stable lifting of multiple groups of folding plates 7.

[0079] Although the above describes the illustrative specific implementation methods of the present application so that technicians in this technical field can understand the present application, the present application is not limited to the scope of the specific implementation methods. For ordinary technicians in this technical field, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations using the concept of the present application are protected.

Claims

1. A comb-shaped water retaining partition wall for a flocculation sedimentation tank, characterized in that: The comb-shaped water retaining partition wall of the flocculation sedimentation tank comprises: A comb-shaped water retaining partition wall (2), which is arranged inside the sedimentation tank (1) and evenly divides the internal space of the sedimentation tank (1); Water retaining grooves (3), which are opened on both side surfaces of the comb-shaped water retaining partition wall (2); Walking tracks (4), which are lapped above the comb-shaped water retaining partition wall (2) and the sedimentation tank (1), and there are two groups of them, and they are in an "I" - shaped structure; A horizontal walking operation platform (5), which is arranged above the two groups of walking tracks (4); A lifting bracket (6), which is fixed on the upper end surface of the horizontal walking operation platform (5); A lifting device (11), which is arranged above the lifting bracket (6), and there is a rotation limiting part between the lifting device (11) and the lifting bracket (6); Folding plates (7), which are arranged above the horizontal walking operation platform (5) and are transported to the bottom end inside the sedimentation tank (1) through the lifting device (11); and A vertical lifting part, which includes a first lifting outer plate (8), a second lifting outer plate (12), a plug-in part and a connecting lifting part. The first lifting outer plate (8) is arranged on the outer side of one end of the folding plate (7), the second lifting outer plate (12) is arranged on the outer side of the other end of the folding plate (7), and both the first lifting outer plate (8) and the second lifting outer plate (12) are in a "C" - shaped structure. There are multiple groups of the second lifting outer plate (12) and the first lifting outer plate (8), and one group of folding plates (7) cooperates with two groups of the first lifting outer plates (8) and the second lifting outer plates (12). The plug-in part is arranged on the surfaces of the first lifting outer plate (8) and the second lifting outer plate (12) and limits and fixes the first lifting outer plate (8) and the second lifting outer plate (12). The connecting lifting part is arranged on the surface of the second lifting outer plate (12) or the first lifting outer plate (8), and cooperates with the second lifting outer plate (12) and the first lifting outer plate (8) to vertically limit the folding plate (7) when lifting; The plug-in part includes a plug-in groove (21), a plug-in block (22) that cooperates with the plug-in groove (21), a plug-in limiting groove (24), a plug-in limiting block (23) that cooperates with the plug-in limiting groove (24), a limiting movable groove (40), a linkage part and a reset part. The plug-in groove (21) is opened on the upper and lower end surfaces of the first lifting outer plate (8), and its cross-section is in a "C" - shaped structure. The plug-in block (22) is fixed on the upper and lower end surfaces of the second lifting outer plate (12). There are multiple groups of the plug-in groove (21) and the plug-in block (22), and one end of the first lifting outer plate (8) cooperates with two groups of the plug-in grooves (21), and one end of the second lifting outer plate (12) cooperates with two groups of the plug-in blocks (22). The plug-in limiting groove (24) is opened on the surface of the plug-in block (22), the limiting movable groove (40) is opened on the surface of the plug-in groove (21), and the cross-sections of both the plug-in limiting groove (24) and the limiting movable groove (40) are in a "C" - shaped structure. The plug-in limiting block (23) is arranged inside the limiting movable groove (40); The linkage member includes a limit link (19), a link limit groove (20), a disassembly button (13), and a plugging inclined surface (25). The link limit groove (20) is opened inside the first hoisting outer plate (8). The limit link (19) is in a "C" - shaped structure, and the middle end of the limit link (19) is arranged inside the link limit groove (20). One end of the limit link (19) is connected to the plugging limit block (23), and the other end is connected to the disassembly button (13). The plugging inclined surface (25) is opened on the surface of the plugging block (22), and the plugging inclined surfaces (25) opened on the surfaces of the two plugging blocks (22) at the same end of the second hoisting outer plate (12) are arranged facing each other; The reset member includes a disassembly groove (18) and a limit spring (17). The disassembly groove (18) is opened on the two side surfaces of the first hoisting outer plate (8) and has a cross - section in a "C" - shaped structure. One end of the limit spring (17) is connected to the disassembly groove (18), and the other end is connected to the disassembly button (13). And the limit spring (17) is always in a compressed state, and the disassembly button (13) pushed by the limit spring (17) is limited by the cooperation of the limit link (19) and the link limit groove (20); The connecting and hoisting member includes hoisting connecting plates (14), hoisting fixing blocks (15) arranged on the surfaces of the hoisting connecting plates (14), a lifting ring (16), a guiding and limiting member, an anti - slip clamping member, and a linkage pushing member. There are two groups of hoisting connecting plates (14). One group of hoisting connecting plates (14) are respectively connected to the two first hoisting outer plates (8) at both ends, and the angle between the hoisting connecting plate (14) and the first hoisting outer plate (8) is 90 degrees. The other group of hoisting connecting plates (14) are respectively connected to the two second hoisting outer plates (12) at both ends, and the angle between the hoisting connecting plate (14) and the second hoisting outer plate (12) is 90 degrees. And the top surface of the hoisting connecting plate (14) is flush with the top surface of the second hoisting outer plate (12) or the first hoisting outer plate (8). The hoisting fixing block (15) is fixed in the middle of the top surface of the hoisting connecting plate (14), and the angle between the hoisting fixing block (15) and the hoisting connecting plate (14) is 90 degrees. The lifting ring (16) is arranged above the hoisting fixing block (15); The guiding and limiting member includes a guiding and limiting groove (29) and a guiding and limiting block (30) that cooperates with the guiding and limiting groove (29). The guiding and limiting groove (29) is opened on the surface of the hoisting fixing block (15). The guiding and limiting block (30) is in a "T" - shaped structure, and one end is inserted into the guiding and limiting groove (29) internally, and the other end is connected to the lifting ring (16). And the guiding and limiting groove (29) and the guiding and limiting block (30) cooperate to vertically limit the lifting ring (16); The anti-slip clamping member includes a tension spring (32), an anti-slip clamping block (27) connected to one end of the tension spring (32), an anti-slip fixing groove (28) connected to the other end, and an anti-slip groove (26). The anti-slip groove (26) is formed on the surface of the first hoisting outer plate (8) or the second hoisting outer plate (12) close to the folding plate (7). The anti-slip fixing groove (28) is formed in the middle of the surface of the first hoisting outer plate (8) or the second hoisting outer plate (12) close to the folding plate (7), and has a "C"-shaped cross-section. There are multiple groups of tension springs (32), and one group of anti-slip clamping blocks (27) cooperate with six groups of tension springs (32), and the distance between the tension spring (32) and the longitudinal center plane of the folding plate (7) is greater than zero; The linkage holding member includes a holding spring (35), a holding groove (34) connected to one end of the holding spring (35), a holding block (33) connected to the other end, and a steel wire rope (31). The holding groove (34) is formed on the bottom surface of the anti-slip fixing groove (28), and has a "C"-shaped cross-section, and the length of the holding groove (34) is greater than the length of the tension spring (32). The holding spring (35) is always in a stretched state. A holding inclined surface (36) is formed at one end of the holding block (33) away from the holding spring (35), and the holding inclined surface (36) is arranged towards the anti-slip clamping block (27). One end of the steel wire rope (31) is connected to the center of the top end of the holding block (33), and the other end is connected to the guiding and limiting block (30), and the height of the upper end of the steel wire rope (31) is lower than the height of the steel wire rope (31).

2. A comb-shaped water retaining partition wall for a flocculation sedimentation tank according to claim 1, characterized in that: The rotation limiting member includes a rotating collar (9), a rotating shaft (10), a rotation limiting groove (37), and a rotation limiting block (38) that cooperates with the rotation limiting groove (37). The rotating collar (9) is arranged on the surface of the hoisting device (11) and has an annular structure. The rotating shaft (10) is fixed on the top surface of the hoisting bracket (6) and has a "T"-shaped structure, and the rotating collar (9) is sleeved outside the rotating shaft (10). The rotation limiting groove (37) is formed on the surface of the rotating shaft (10) and has an arc-shaped structure. The rotation limiting block (38) is fixed on the inner wall of the rotating collar (9) and is arranged inside the rotation limiting groove (37), and the rotation limiting groove (37) and the rotation limiting block (38) cooperate to limit the rotation of the hoisting device (11), and the maximum rotation angle is 180 degrees.

3. A construction method of a comb-shaped water retaining partition wall in a flocculation sedimentation tank according to any one of claims 1-2, comprising the following steps: Measurement and layout: According to the design construction drawing, the positions of the comb-shaped water retaining partition walls (2), the positions and dimensions of the water retaining grooves (3) at (6) on each comb-shaped water retaining partition wall (2), and the dimensions and positions of the water passing holes on the comb-shaped water retaining partition walls (2) are marked on the ground of the flocculation tank; Steel bar installation: Install steel bars at the comb-shaped water retaining partition walls (2) and the water retaining grooves (3), eliminating the influence of the partition wall steel bars on the formwork of the water retaining grooves (3), ensuring the steel bar protection layer thickness, and at the same time ensuring the cross-sectional accuracy of the water retaining grooves (3); Aluminum formwork installation, concrete pouring, partition wall formwork removal: The comb-shaped water-retaining partition wall aluminum film (39) is installed in sequence according to the formwork drawing, and the mold release agent is evenly applied. After the comb-shaped water-retaining partition wall aluminum film (39) is installed, the laser level is used in conjunction with the level to ensure that the upper end of the comb-shaped water-retaining partition wall aluminum film (39) is on the same horizontal plane, and the partition wall groove formwork, water hole position size and partition verticality are re-measured. After acceptance, the partition wall concrete is poured, and the formwork is removed one day later to ensure that there are no missing edges or corners; Installing the folding plate lifting device: firstly, laying the walking track (4) on the top surface of the comb-shaped water retaining partition wall (2) and the water retaining groove (3), then placing the horizontal walking operating platform (5) on the walking track (4), fixing the lifting bracket (6) on the top surface of the horizontal walking operating platform (5), rotating the lifting device (11) through the rotating shaft (10) and connecting it to the top of the lifting bracket (6), and the rotating limit groove (37) and the rotating limit block (38) cooperate to limit the rotation of the lifting device (11), and the maximum rotation angle is 180 degrees; Folding plate installation: firstly, the two sets of first lifting outer plates (8) connected by the lifting connecting plate (14) are placed in the center of the outer surface of one set of folding plates (7), and then the two sets of second lifting outer plates (12) connected by the other set of lifting connecting plates (14) are placed on the side surface of the folding plate (7) away from the first lifting outer plate (8), and the second lifting outer plate (12) is pushed toward the first lifting outer plate (8), so that the plug-in block (22) enters the interior of the connecting rod limiting groove (20), and the plug-in inclined surface (25) contacts the plug-in limiting block (23), thereby pressing the plug-in limiting block (23) into the interior of the limiting movable groove (40). At this time, the disassembly is performed by the limiting connecting rod (19). The disassembly button (13) is partially pulled into the disassembly groove (18) until the plug-in block (22) completely enters the plug-in groove (21), and the limit spring (17) supports the disassembly button (13) to extend out of the first lifting outer plate (8), and then the plug-in limit block (23) is driven to extend out of the limit movable groove (40) and enter the plug-in limit groove (24) through the limit connecting rod (19), thereby limiting and fixing the plug-in block (22), thereby connecting the second lifting outer plate (12) to the first lifting outer plate (8), and then lifting a group of folding plates (7) by connecting the lifting device (11) and the lifting ring (16). At this time, the folding plates (7) are vertically located on the first lifting outer plate. The first hoisting outer plate (8) and the second hoisting outer plate (12) are provided with anti-skid grooves (26) on the surfaces of the first hoisting outer plate (8) and the second hoisting outer plate (12) to prevent the folding plate (7) from sliding inside the first hoisting outer plate (8) and the second hoisting outer plate (12), and the lifting ring (16) rises to drive the guide limit block (30) to move upward inside the guide limit groove (29), thereby driving the top holding block (33) to move upward through the steel wire rope (31), so that the top holding block (33) drives the anti-skid clamping block (27) to move outward through the top holding inclined surface (36), and the anti-skid clamping block (27) provided on the surfaces of the first hoisting outer plate (8) and the second hoisting outer plate (12) is provided. 27) cooperate with each other to clamp and limit the folding plate (7), further ensuring the vertical stability of the folding plate (7) during lifting, so that the folding plate (7) falls vertically to the bottom of the sedimentation tank (1), and then by pressing the disassembly button (13), the plug-in limit block (23) is driven to enter the limit movable groove (40) through the limit connecting rod (19), canceling the limit fixation of the plug-in block (22), facilitating the separation of the first lifting outer plate (8) and the second lifting outer plate (12), and the limit spring (17) supports the disassembly button (13) to reset the disassembly button (13), repeating the above operation, it is convenient to lift multiple groups of folding plates (7) vertically and stably; Smoothing the gaps: The bottom of all folding plates (7) shall be caulked with 1:2 waterproof mortar. The bottom of the folding plates (7) shall be in close contact with the bottom of the pool. After installing the folding plates (7), the bottom of the folding plates (7) shall be smoothed with 20 mm cement mortar to prevent short-circuiting.

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