Sand suction pool structure

Abstract

The utility model relates to a sand suction pool structure which comprises a pool main body, pool top rails are respectively arranged on two side walls of the pool main body, and a moving crane is arranged on the two pool top rails in a sliding and spanning mode. A middle vertical wall extending in the length direction of the tank body is arranged in the middle in the tank body so as to divide the tank body into a left sand settling tank and a right sand settling tank, a main aeration pipe horizontally extending in the length direction of the middle vertical wall is fixed to the top of the middle vertical wall, and a plurality of aeration branch pipes horizontally extending in the transverse direction are connected to the two sides of the main aeration pipe correspondingly. The aeration branch pipes are arranged at intervals in the length direction of the main aeration pipe, and the free ends of the aeration branch pipes downwards extend to the bottom of the corresponding sand settling tank along the corresponding side surface of the middle vertical wall; one end of the main aeration pipe is externally connected with a pressure gas source; and sand outlet pipes which respectively extend into the left sand settling tank and the right sand settling tank are synchronously and movably arranged on the movable travelling crane. The structure can effectively guarantee the aeration effect on particles such as sand grains deposited at the bottom of the tank, the sand suction effect is good, the risk that the sand outlet pipe is blocked and damaged is reduced, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of the sewage treatment sedimentation tank in the operation transportation, specifically relates to a sand suction pool structure. BACKGROUND

[0002] The sand suction pool (also called grit chamber) in the water treatment plant can remove the sand particles, coal cinder and other heavy particles in water based on the method of combining physical sedimentation and mechanical suction, so as to improve the overall water treatment efficiency. During use, when the water flow enters the sand suction pool, the water flow speed slows down, and the heavy particles such as sand particles in the water will gradually settle to the bottom of the pool under the action of their own gravity; the sand suction pool is usually equipped with a sand suction machine, when the sand particles accumulate to a certain degree at the bottom of the pool, the sand suction machine is started, and the trolley of the sand suction machine runs back and forth along the top rail of the pool under the instruction of electrical control, and the air-lift pump, sand suction pipe and other devices arranged on the trolley lift the sand-water mixture settled at the bottom of the pool to the side of the pool, the designated sand collecting tank or the sand-water separator. However, when the sand particles accumulate more at the bottom of the pool, the sand suction pipe which extends into the bottom of the pool and moves parallel to the trolley is easy to be damaged due to too much obstruction, and reference can be made to the sand suction system disclosed in the prior art such as Chinese patent CN221181767U, although the fan and sand blowing pipe are arranged beside the sand suction pipe, and the sand blowing pipe moves synchronously and parallel to the sand suction pipe, the area to be sucked around the sand suction pipe can be aerated in advance, but the sand blowing pipe and the sand suction pipe are arranged in front and back, the sand blowing pipe moving synchronously has insufficient sand lifting capacity, the effect of pre-aeration sand lifting is poor, the sand suction pipe may still be damaged due to obstruction, the improvement of sand suction effect is not obvious, and the carrying load of the trolley is increased. In addition, the trolley may fail during the back and forth movement along the top rail of the pool, although the operator can stand on the trolley, but the equipment on the side and below the trolley is inconvenient to maintain, and further improvement and optimization are needed. SUMMARY

[0003] In view of the above shortcomings of the prior art, the technical problem to be solved by the utility model is to provide a sand suction pool structure, to avoid the problem that the sand suction machine equipped in the current sand suction pool is easy to be damaged due to movement obstruction, and to achieve the effects of improving service life and sand suction efficiency.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme:

[0005] The utility model provides a sand suction pool structure, including the pool main part of cuboid and the open upper end, the two side walls of pool main part are equipped with the pool roof track respectively along the length direction of pool main part, and the mobile travelling crane across along the width direction of pool main part is equipped with the pool roof track on two, and can slide along the pool roof track, the middle part position of pool main part is equipped with the middle stand wall along its length direction extension, to divide into left and right two grit tank with pool main part, the top of middle stand wall is fixed with the main aeration pipe along its length direction horizontal extension, and the both sides of main aeration pipe are connected with a plurality of horizontal lateral extension aeration branch pipe, and each aeration branch pipe is arranged at the length direction of main aeration pipe on the side of main aeration pipe, and the free end of aeration branch pipe extends to the bottom of corresponding grit tank along the corresponding side of middle stand wall, and the bracket of middle stand wall is fixedly connected with the downward extension aeration branch pipe one by one on the side of middle stand wall, and one end of main aeration pipe is closed, and the other end is stretched out of pool main part so as to be connected with pressure gas source outside,

[0006] The mobile travelling crane is synchronously moved and is equipped with the sand outlet pipe of being inserted into left and right two grit tanks.

[0007] Further improve the above technical scheme, the mobile travelling crane is connected with four downward extension vertical steel bars in grit tank, and four vertical steel bars surround the rectangular middle protection space, and the low end of four vertical steel bars is connected with horizontal shelf, and the submersible pump in the middle protection space is arranged on the horizontal shelf, and the bottom end of sand outlet pipe is connected with the submersible pump, and the sand outlet pipe is also located in the middle protection space.

[0008] Further, the bottom end of aeration branch pipe is 90 degrees bent and vertically towards the side wall of pool main part.

[0009] Further, the top of middle stand wall is connected with horizontal outward extension footboard along two side edges respectively, and the through hole corresponding with the diameter of aeration branch pipe is formed in footboard, and the upper end of aeration branch pipe is vertically passed through footboard through the corresponding through hole.

[0010] Further, the side wall is also provided with the side wall along its length direction extension in pool main part close to the side wall of pool main part, and the grit tank is formed between side wall and middle stand wall, and the overflow tank is formed between side wall and the side wall of adjacent pool main part, and the height of side wall is lower than middle stand wall.

[0011] Further, the inner side of side wall is connected with a plurality of columns, and the plurality of columns are arranged at intervals along the length direction of side wall, and the top end of column is higher than side wall, and the top end of plurality of columns is connected with horizontal footboard of the length of side wall.

[0012] Further, the mobile car is swing connected with a skimming swing arm corresponding to the overflow tank below, the free end of the skimming swing arm is connected with a flexible skimming float; one end in the overflow tank is provided with a weir wall, the upper surface of the weir wall is an inclined surface facing the skimming swing arm, the height of the higher end of the inclined surface corresponds to the height of the side partition wall, and the weir wall and the end wall of the corresponding end pool body form a skimming outlet channel.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1、the sand suction pool structure of the utility model adopts the mode that the main aeration pipe is connected with a plurality of aeration branch pipes, uniform aeration is carried out in the pool body during sand suction, and is independently arranged from the mobile car, as long as the gas supply amount of the pressure gas source is sufficient, the aeration effect on the particles such as sand particles deposited at the bottom of the pool can be effectively guaranteed, the sand lifting amount is sufficient, a plurality of aeration branch pipes also realize pre-aeration sand lifting before the mobile car and the sand outlet pipe reach, the sand suction effect of the sand outlet pipe is good during the sliding process of the mobile car along the pool top guide rail, the hindrance of the sediment is small, and the risk of damage of the sand outlet pipe is reduced; the independent arrangement of the aeration pipe also reduces the carrying load of the mobile car, and energy consumption is reduced and service life is prolonged.

[0015] 2、the sand suction pool structure of the utility model carries out sand water suction through the submersible pump, the action distance is short, the sand suction effect is improved, the four vertical steel bars are surrounded, the firmness of connection is guaranteed, and the submersible pump and the sand outlet pipe are further prevented from being damaged when moving with the mobile car.

[0016] 3、the sand suction pool structure of the utility model is additionally provided with a plurality of footboards, maintenance and repair of the mobile car failure are facilitated, and maintenance and repair operations can basically be carried out at any position. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure schematic view of a sand suction pool structure of a specific embodiment from a top view angle;

[0018] Figure 2 It is Figure 1 A-A sectional view (rotation, enlargement) of the utility model;

[0019] Figure 3 It is Figure 1 B-B sectional view of the utility model;

[0020] Figure 4 It is Figure 1 C-C sectional view of the utility model;

[0021] The pool consists of: main body 1, side wall 11, outlet hole 121, end wall 12, inlet hole 121, top track 13, middle wall 14, support 141, foot pedal 142, side partition wall 15, column 16, horizontal pedal 161, weir wall 17, inclined surface 171, skimmed outlet channel 172, sedimentation tank 18, overflow tank 19, main aeration pipe 2, aeration branch pipe 21, mobile crane 3, main sand discharge pipe 31, sand discharge pipe 32, vertical steel bar 33, horizontal shelf 34, submersible pump 35, skimmed swing arm 36, and skimmed float 37. Detailed Implementation

[0022] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0023] Please see Figure 1 and Figure 2 A specific embodiment of a sand suction tank structure includes a rectangular tank body 1 with an open top. Two side walls 11 of the tank body 1 are respectively provided with tank top tracks 13 extending along the length of the tank body 1. A mobile trolley 3 extending along the width of the tank body 1 straddles the two tank top tracks 13 and can slide back and forth along the tank top tracks 13. A central vertical wall 14 extending along its length is provided in the middle of the tank body 1, dividing the inner cavity of the tank body 1 into two sand settling tanks 18. A main aeration pipe 2 extending horizontally along its length is fixed to the top of the central vertical wall 14, and several transverse side water pipes are vertically connected to both sides of the main aeration pipe 2. The aeration branch pipes 21 extend horizontally. Each aeration branch pipe 21 located on one side of the main aeration pipe 2 is spaced apart along the length of the main aeration pipe 2. The free end of the aeration branch pipe 21 extends beyond the corresponding side of the intermediate vertical wall 14 and then extends downward along the corresponding side of the intermediate vertical wall 14 to the bottom of the corresponding sedimentation tank 18. A bracket 141 is provided on the lower part of the side of the intermediate vertical wall 14, and the downwardly extending aeration branch pipes 21 are fixedly connected one-to-one through the bracket 141. One end of the main aeration pipe 2 is closed, and the other end extends out of the tank body 1 for external pressure air source (not shown in the figure). The mobile trolley 3 is equipped with sand outlet pipes 32 that extend into the left and right sedimentation tanks 18 respectively.

[0024] The sand suction tank structure of this embodiment adopts a main aeration pipe 2 connected to several aeration branch pipes 21, which continuously aerate the tank body 1 during the sand suction process. It is set up independently from the mobile trolley 3. As long as the pressure air source supply is sufficient, it can effectively ensure the aeration effect on sand and other particulate matter deposited at the bottom of the tank. The sand lifting volume is sufficient. The multiple aeration branch pipes 21 also realize pre-aeration and sand lifting before the arrival of the mobile trolley 3 and the sand discharge pipe 32. During the sliding of the mobile trolley 3 along the guide rail on the top of the tank, the sand discharge pipe 32 has a good sand suction effect and is less obstructed by sediment, reducing the risk of the sand discharge pipe 32 being blocked and damaged. The independent setting of the aeration pipes also reduces the carrying load of the mobile trolley 3, realizing energy reduction and life extension.

[0025] In implementation, the driving and control of the mobile trolley 3 are in existing manner, which will not be described herein. The sand discharge pipes 32 are connected to the air lift pumps or other suction driven devices arranged on the mobile trolley 3, which are not limited in particular; the sand-water mixture sucked out is separated and treated in existing manner, which will not be described herein.

[0026] Please continue to refer to Figure 2 and Figure 4 The mobile trolley 3 is connected with four vertical steel bars 33 extending downward into the sand sink 18, which enclose a rectangular intermediate protection space, and the lower ends of the four vertical steel bars 33 are connected with a horizontal shelf 34, on which a submersible pump 35 is arranged in the intermediate protection space, the bottom end of the sand discharge pipe 32 is connected to the submersible pump 35, and the sand discharge pipe 32 is also located in the intermediate protection space. The upper ends of the two sand discharge pipes 32 are connected to a horizontal sand discharge main pipe 31 fixed on the mobile trolley 3 and extending along the mobile trolley 3, with the end extending out of the mobile trolley 3 (the pool body 1) to be connected to a sand collecting tank (not shown in the figure).

[0027] In this way, the sand-water suction is implemented by the submersible pump 35, which has a short action distance and improves the sand suction effect. The four vertical steel bars 33 are arranged in a surrounding manner to ensure the connection firmness and further avoid damage to the submersible pump 35 and the sand discharge pipe 32 when the mobile trolley 3 moves. In implementation, the power supply line of the submersible pump 35 can be fixed on the outside of the sand discharge main pipe 31 and the sand discharge pipe 32 and connected to the submersible pump 35. A synchronous power supply device can be placed on the mobile trolley 3, or a cable reel can be arranged on the mobile trolley 3 and connected to a fixed power supply, and the rotation of the cable reel is controlled to keep the power supply line between the power supply and the cable reel regular and timely during the sliding process of the mobile trolley 3. The vertical steel bars 33 can be angle steels with the external corners facing outward.

[0028] Please continue to refer to Figure 2 The bottom end of the aeration branch pipe 21 is bent by 90° and vertically directed toward the side wall 11 of the pool body 1. The bottom of the aeration branch pipe 21 should extend to the bottom of the sand sink 18, and the 90° bent part does not need to extend too long, as long as it is directed toward the sand sink 18. In this way, the horizontal aeration toward the bottom of the sand sink 18 is more likely to stir up the sand particles deposited on the pool bottom, which is beneficial to improve the sand suction effect.

[0029] Please continue to refer to Figure 1 and Figure 2The top of the intermediate vertical wall 14 is connected with horizontal outward extending footboards 142 on both sides, and the footboards 142 are provided with through holes corresponding to the diameter of the aeration branch pipes 21, and the upper ends of the aeration branch pipes 21 vertically pass through the corresponding through holes of the same side footboard 142, which can fix the aeration straight pipes. In the implementation, the footboards 142 are arranged in the length direction of the pool body 1 with the same length as the intermediate vertical wall 14, and the upper surfaces are flush and lower than the side wall 11 of the pool body 1, and the footboards 142 extend outward in the transverse direction with a length of about 0.5 meters. The aeration pipes are all located below the mobile trolley 3.

[0030] In this way, the maintenance and repair of the mobile trolley 3 can be facilitated, and the operation can be implemented on the footboards 142 at any position in the length direction.

[0031] Please continue to see Figures 1-4 A side wall 15 extending along the length direction of the pool body 1 is further arranged near the side wall 11 of the pool body 1, and the side wall 15 and the intermediate vertical wall 14 form the sand setting groove 18, and the side wall 15 and the adjacent side wall 11 of the pool body 1 form the overflow groove 19, and the height of the side wall 15 is lower than that of the intermediate vertical wall 14. The overflow groove 19 is connected with a water outlet hole 121, which can be arranged on the side wall 11 of the pool body 1, and the water inlet hole 121 can be arranged on the end wall 12 of the pool body 1 to communicate with the two sand setting grooves 18.

[0032] In this way, the water flows into the sand setting groove 18 for settlement and sand absorption, and the upper clear water is left in the overflow groove 19 and discharged, which is beneficial to the efficient implementation of the treatment process.

[0033] The inner side of the side wall 15 is connected with a plurality of columns 16, which are arranged at intervals along the length direction of the side wall 15, and the top end of the column 16 is higher than the side wall 15 and not lower than the intermediate vertical wall 14, and the top ends of the columns 16 are connected with a horizontal footboard 161 with the same length as the side wall 15.

[0034] In this way, the standing positions are further increased, the maintenance and repair of the mobile trolley 3 are facilitated, and the strength of the side wall 15 is enhanced without affecting the overflow process. In the implementation, the footboard 142 and the horizontal footboard 161 can be in the form of a lower layer of concrete plate and an upper layer of anti-skid steel plate. The bottom end of the column 16 extends to the pool bottom and can be integrally formed with the side wall 15.

[0035] Please continue to see Figures 1-3The movable trolley 3 is swing-connected with a skimming swing arm 36 corresponding to the overflow tank 19 below, and the free end of the skimming swing arm 36 is connected with a flexible skimming float plate 37; one end of the overflow tank 19 is provided with a weir wall 17, the upper surface of the weir wall 17 is an inclined surface 171 facing the skimming swing arm 36, the height of the higher end of the inclined surface 171 corresponds to the height of the side partition wall 15, and the weir wall 17 and the end wall 12 of the corresponding end pool body 1 form a skimming outlet passage 172.

[0036] In this way, the process of moving the movable trolley 3 to suck sand is accompanied by the removal of some impurities such as floating sludge and oil on the water surface in the overflow tank 19, and the floating sludge is skimmed into the skimming outlet passage 172 at the end of the pool, so as to be cleaned and treated subsequently. The skimming swing arm 36 can be swing-connected freely below the movable trolley 3, and the flexible skimming float plate 37 can adapt to the height of the water surface in the overflow tank 19, and after skimming the floating sludge into the skimming outlet passage 172, it returns smoothly with the movable trolley 3. In the implementation, the swing of the skimming swing arm 36 can also be controlled by a winch and a rope to ensure the smooth progress of the skimming and returning process, and the specific implementation is not limited.

[0037] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A sand suction tank structure, comprising a rectangular parallelepiped body with an open top, wherein two side walls of the body are respectively provided with top rails extending along the length of the body, and a mobile trolley extending along the width of the body straddles the two top rails and can slide along the top rails; characterized in that: A central wall extending along its length is located in the middle of the main body of the pool, dividing the pool into two sedimentation tanks, left and right. A main aeration pipe extending horizontally along its length is fixed at the top of the central wall. Several horizontally extending aeration branch pipes are connected to both sides of the main aeration pipe. Each aeration branch pipe located on one side of the main aeration pipe is spaced apart along the length of the main aeration pipe. The free end of the aeration branch pipe extends downward along the corresponding side of the central wall to the bottom of the corresponding sedimentation tank. The downward extending aeration branch pipes are fixedly connected one-to-one by brackets on the side of the central wall. One end of the main aeration pipe is closed, and the other end extends out of the pool body for connection to an external pressurized air source. The mobile crane is equipped with sand discharge pipes that extend into the left and right sand settling tanks respectively.

2. The sand suction tank structure according to claim 1, characterized in that: The mobile crane is connected to four vertical steel bars that extend downward into the sedimentation tank. The four vertical steel bars form a rectangular central protective space. The lower ends of the four vertical steel bars are connected to a horizontal shelf. A submersible pump located in the central protective space is installed on the horizontal shelf. The bottom end of the sand discharge pipe is connected to the submersible pump, and the sand discharge pipe is also located in the central protective space.

3. The sand suction tank structure according to claim 1, characterized in that: The bottom end of the aeration branch pipe is bent at 90° and faces vertically toward the side wall of the main body of the pool.

4. The sand suction tank structure according to claim 1, characterized in that: The top two sides of the central wall are connected to foot pedals that extend horizontally outward. The foot pedals have through holes corresponding to the diameter of the aeration branch pipes. The upper end of the aeration branch pipes passes vertically through the corresponding through holes into the foot pedals.

5. The sand suction tank structure according to claim 1, characterized in that: Near the side wall of the main body of the pool, there is also a side partition wall extending along its length inside the main body of the pool. The side partition wall and the middle vertical wall form the sedimentation trough, and the side partition wall and the adjacent side wall of the main body of the pool form an overflow trough. The height of the side partition wall is lower than that of the middle vertical wall.

6. The sand suction tank structure according to claim 5, characterized in that: The inner side of the side partition wall is connected to several columns, which are spaced apart along the length of the side partition wall. The top of the columns is higher than the side partition wall, and the top of the columns are connected to a horizontal tread of the same length as the side partition wall.

7. The sand suction tank structure according to claim 5, characterized in that: Below the mobile trolley, there is a swing arm that corresponds to the overflow trough. The free end of the swing arm is connected to a flexible skimming float. One end of the overflow trough is equipped with a weir wall. The upper surface of the weir wall is an inclined surface facing the skimming arm. The height of the higher end of the inclined surface corresponds to the height of the side partition wall. A skimming outlet channel is formed between the weir wall and the end wall of the corresponding end pool.

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