Sand setting device and sewage solid-liquid separation device

Abstract

The utility model provides a sand setting device and a sewage solid-liquid separation device, and belongs to the technical field of water pollution treatment, the sand setting device comprises a shell, the shell is connected with an input part and an output part, and the bottom of the shell is provided with an opening; and the sealing block is used for sealing the opening and can slide up and down. And sediments and floating objects in the sewage are separated in a centralized manner through the sand setting device. The sewage solid-liquid separation device comprises a sand setting device positioned in the sewage tank; wherein the input part penetrates through and extends out of the box body, and the overflow groove is matched with the floating object lifting mechanism to lift floating objects; the water taking pipe is located in the sewage tank, floating balls are connected to the sewage pipe at intervals, the water taking pipe is communicated with a discharging pipe, and the discharging pipe is located outside the sewage tank; and a sewage pipe is communicated with the water outlet groove and is communicated with a discharge pipe. The solid and the sewage are separated through the sewage solid-liquid separation device, so that subsequent further treatment is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of water pollution control, and specifically relates to a sand settling device and a sewage solid-liquid separation device. Background Art

[0002] Urban sewage refers to domestic sewage, industrial wastewater and runoff sewage within urban areas. Sewage generally contains floating objects, sediments and other substances dissolved in the water. Generally, the solids in the sewage need to be separated before subsequent treatment can be carried out.

[0003] In the field of solid-liquid separation, a modular feces solid-liquid separator with a patent authorization announcement number of CN220827329U uses sedimentation and screen salvage to extract sediment and floating objects from sewage respectively. The equipment uses a slag discharger to salvage the sand and gravel settled in the sand collecting pit, and uses a screen elevator to lift the floating objects floating above the feces water. In actual use, it is found that although the device can lift floating objects, the floating objects in the box can float above various areas such as the diversion sand settling area, the sand collecting pit and the middle area, making it difficult to effectively gather, so that the floating objects in some areas cannot be effectively salvaged, affecting the salvage quality.

[0004] Based on this, a sand settling device and sewage solid-liquid separation device were studied to effectively aggregate floating objects and then perform solid-liquid separation to improve separation efficiency. Utility Model Content

[0005] In order to solve the above problems existing in the prior art, a sand settling device and a sewage solid-liquid separation device are provided.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] The utility model proposes a sand settling device, comprising a shell, wherein the interior of the shell is provided with a cavity, the outer wall of the shell is connected with an input part and an output part, the input part and the output part are both communicated with the cavity, and the bottom of the shell is provided with an opening; a sealing block is used for sealing the opening, and the sealing block can be slidably arranged up and down.

[0008] Preferably, the sealing block is located inside the cavity; and further comprises a telescopic driving source, the telescopic driving source is connected to a connecting rod, and the connecting rod is connected to the sealing block to drive it to slide up and down.

[0009] Preferably, the connecting rod is in a "U"-shaped structure and is located outside the shell, one end of the connecting rod is connected to the telescopic driving source, and the other end of the connecting rod is connected to the sealing block.

[0010] Preferably, the upper portion of the shell is a cylindrical structure, and the bottom of the shell is an inverted cone structure.

[0011] Preferably, the sealing block includes a sealing portion and a guiding portion, the sealing portion is an inverted cone-shaped structure, and the outer wall is in contact with the inner wall of the bottom of the shell, and the guiding portion is a cone-shaped structure for dispersing the settled sand to the periphery.

[0012] Preferably, it also includes a drainage cover, which is located in the cavity and connected to the input part for controlling the flow direction of sewage.

[0013] Preferably, the output portion is located at the upper part of the shell, and the output portion includes an overflow groove and a water outlet groove connected to each other, the top of the overflow groove is in an open state, and the overflow groove and the water outlet groove are connected to form an "L"-shaped structure.

[0014] The utility model also proposes a sewage solid-liquid separation device, including a sewage tank, wherein a sediment lifting mechanism and a floating object lifting mechanism are arranged in the sewage tank, and also includes: the above-mentioned sand settling device, wherein the sand settling device is located inside the sewage tank; wherein the input part passes through and extends to the outside of the box body, and the overflow trough is adapted to the floating object lifting mechanism to lift the floating objects; a rotatable water intake pipe located inside the sewage tank, wherein floats are connected to the sewage pipe at intervals, wherein the water intake pipe is connected to a discharge pipe, and the discharge pipe is located outside the sewage tank; and a sewage pipe, wherein the bottom end of the sewage pipe is connected to the water outlet trough, and the other end of the sewage pipe passes through the outside of the box body and is connected to the discharge pipe.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The sand settling device proposed by the utility model inputs sewage with floating objects and sediments into the shell through the input part, and the sediments fall freely to the bottom of the shell, and the floating objects float above the sewage. As the sewage level rises, the floating objects reach a certain position and are concentrated and output by the output part for subsequent treatment. The device can effectively separate the sediments and floating objects in the sewage and output them in a centralized manner, avoiding the situation where some areas cannot be salvaged during the subsequent floating object lifting process, and further improving the salvage efficiency.

[0017] 2. In the present invention, the connecting rod for controlling the sealing block is arranged outside the shell, which can effectively prevent the floating objects from being entangled on the connecting rod and causing damage to the device. At the same time, a flow guide cover is arranged inside the shell, and a vortex is formed inside the shell through the flow guide cover, which can make the floating objects have a certain fluidity, and further make it easier to gather inside the output part.

[0018] 3. The utility model also proposes a solid-liquid separation device, which includes a grit settling device placed in a sewage tank, an output portion of the grit settling device is directly connected to a floating object lifting mechanism to lift and dehydrate the floating objects, and the sewage passing through the output portion is directly discharged to the outside. When the sewage and sediment in the grit settling device fall to the bottom of the tank, the sediment lifting mechanism lifts and dehydrates them. The device further separates the water and solids, which is convenient for subsequent treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 It is a schematic diagram of the structure of the bottom of the sand settling device of the utility model being closed.

[0021] Figure 2 It is a structural schematic diagram of the utility model in which the bottom of the sand settling device is open.

[0022] Figure 3 It is a top view of the sand settling device of the utility model.

[0023] Figure 4 It is a structural schematic diagram of the solid-liquid separation device of the utility model.

[0024] Figure 5 It is a left-side structural schematic diagram of the utility model sand settling device located in a sewage tank.

[0025] Figure 6 It is a schematic diagram of the activity track of the water intake pipe of the utility model.

[0026] Description of reference numerals:

[0027] 1. Sewage tank; 2. Sediment lifting mechanism; 21. Lifting screw; 22. Pressing screw; 3. Floating object lifting mechanism; 4. Desilter; 41. Shell; 42. Chamber; 43. Input part; 44. Output part; 441. Overflow trough; 442. Water outlet trough; 45. Opening; 46. Block; 461. Guide part; 462. Blocking part; 47. Telescopic driving source; 48. Connecting rod; 49. Drainage cover; 5. Water intake pipe; 6. Float; 7. Sewage pipe; 8. Discharge pipe. DETAILED DESCRIPTION

[0028] In the description of the present utility model, it is to be understood that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a centrally arranged component at the same time.

[0029] In addition, terms such as "long", "short", "inside", and "outside" indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention. They do not indicate or imply that the components or elements referred to must have this specific orientation or operate in a specific orientation structure, and should not be understood as a limitation of the present invention.

[0030] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0031] like Figure 1-3 As shown, this embodiment proposes a sand settling device 4, which includes:

[0032] A housing 41, wherein the housing 41 has a cavity 42 inside, an input portion 43 and an output portion 44 are connected to the outer wall of the housing 41, and the input portion 43 and the output portion 44 are both connected to the cavity 42, and the housing 41 has an opening 45 at the bottom;

[0033] A sealing block 46 is used to seal the opening 45 , and the sealing block 46 can be slidably arranged up and down.

[0034] The bottom of the shell 41 is sealed in advance by a sealing block 46, and sewage enters the shell 41 through the input part 43. As the liquid level rises, the sediment naturally falls and settles at the bottom of the shell 41. When the liquid level rises to a certain level, the sewage and floating sediment are forced to flow out through the output part 44. When the sediment accumulates to a certain level or for a certain period of time, the opening 45 is opened by the sealing block 46, so that the sediment falls freely through the opening 45 to the bottom. After the sediment is discharged, the above steps are repeated and the shell 41 is sealed again. The separation of sediment and floating matter is achieved through this device, which is convenient for the subsequent solid-liquid separation process.

[0035] In some embodiments, the sealing block 46 is located inside the cavity 42 and also includes a telescopic driving source 47. The telescopic driving source 47 is transmission-connected to a connecting rod 48. The connecting rod 48 is connected to the sealing block 46 to drive it to slide up and down, thereby achieving controllable sealing of the bottom of the shell 41, thereby facilitating the control of the discharge of sediment.

[0036] like Figure 1As shown, in some embodiments, the connecting rod 48 is in a "U" shape and is located outside the shell 41, one end of the connecting rod 48 is connected to the telescopic drive source 47, and the other end of the connecting rod 48 is connected to the sealing block 46; specifically, the length of the left side of the connecting rod 48 is greater than the length of the right side thereof, so as to prevent the connecting rod 48 from interfering with the shell 41 in the process of controlling the up and down movement of the sealing block 46; relative to the connecting rod 48 being directly and vertically placed in the shell 41 to control the up and down sliding of the sealing block 46, in this embodiment, the connecting rod 48 is placed outside to prevent it from being entangled with the floating objects inside and affecting the efficiency of subsequent floating object lifting, while avoiding damage to the connecting rod 48 or the telescopic drive source 47.

[0037] like Figure 2-3 As shown, in some embodiments, the shell 41 is divided into two parts, the upper part of which is a cylindrical structure, and the bottom of the shell 41 is an inverted cone structure; it also includes a drainage cover 49, which is located in the cavity 42 and is connected to the output part 44 for controlling the flow direction of sewage. The drainage cover 49 includes two side plates and an inclined plate. The side plates are connected to the inner wall of the shell 41, and the inclined plate is connected between the two side plates and connected to the inner wall of the shell 41. The inclined plate is located at the end of the input part 43. Under the obstruction of the inclined plate, the sewage entering the cavity is output along the inner wall of the shell 41. Under the action of the inclined plate, the sewage in the cavity 42 forms a vortex, which facilitates the discharge of floating objects from the output part 44 under the push of the vortex.

[0038] In some embodiments, the sealing block 46 includes a sealing portion 462 and a guiding portion 461. The sealing portion 462 is an inverted cone structure, and the outer wall of the sealing portion 462 fits with the inner wall of the bottom of the shell 41 to completely block the opening 45 to prevent a large amount of sewage from leaking therefrom. The guiding portion 461 is a cone structure used to disperse the sediment to the periphery. The bottom of the shell 41 is set to an inverted cone structure to prevent part of the sediment from adhering to the bottom of the shell 41 when the opening 45 is opened. The sediment is dispersed to the periphery through the guiding portion 461 at the top of the sealing block 46. After the sealing block 46 moves upward, the sediment falls through the gap between the sealing block 46 and the shell 41 and is discharged from the opening 45.

[0039] In some embodiments, the output part 44 is located at the upper part of the housing 41, and the output part 44 includes an overflow trough 441 and a water outlet trough 442 connected to each other. The top of the overflow trough 441 is open, and the overflow trough 441 and the water outlet trough 442 are connected to form an "L"-shaped structure. The overflow trough 441 is connected to the floating object lifting mechanism 3, and the floating objects are lifted by the floating object lifting mechanism 3 during the flow of the overflow trough 441, and the sewage after the floating objects are separated continues to flow and falls along the water outlet trough 442.

[0040] like Figure 4-6As shown, the present invention also proposes a sewage solid-liquid separation device, which includes a sewage tank 1, in which a sediment lifting mechanism 2 and a floating object lifting mechanism 3 are arranged, wherein the bottom of the sewage tank 1 is an inwardly contracted structure, and the sediment at the bottom of the sewage tank 1 is lifted in cooperation with the sediment lifting mechanism 2, and the sediment lifting mechanism 2 includes a connected lifting screw 21 and a pressing screw 22, wherein the lifting screw 21 is located at the bottom, and the lifting screw 21 squeezes out the water in the sediment through the pressing screw 22 after lifting, wherein the end of the floating object lifting mechanism 3 is connected to the pressing screw 22, and the floating object is lifted and the water is squeezed out through the pressing screw 22, and the floating object and the sediment after the water is separated are output to the outside through the pressing screw 22, and also includes:

[0041] The above-mentioned grit trap 4 is placed inside the sewage tank 1, and the output part 44 of the grit trap 4 penetrates and extends to the outside of the tank. The overflow trough 441 of the input part 43 of the grit trap 4 is adapted to the floating object lifting mechanism 3 to lift the floating objects. In this embodiment, the floating object lifting mechanism 3 is a grid elevator. The floating object lifting mechanism 3 is partially placed inside the sewage tank 1, and its bottom is placed above the overflow trough 441 to lift the floating objects, and the top is placed outside the sewage tank 1 to discharge the floating objects. The grid elevator can lift the floating objects in the sewage, and the sewage continues to flow to the outlet trough 442 through the grid elevator.

[0042] A rotatable water intake pipe 5 is located inside the sewage tank 1, and a float 6 is connected to the sewage pipe 7 at intervals. The water intake pipe 5 is connected to a discharge pipe 8, and the discharge pipe 8 is located outside the sewage tank 1. The rotatable water intake pipe 5 ensures 180° water intake in the sewage tank 1. The water intake port in the water intake pipe 5 is connected to the float 6 through a connecting rope, so that the water intake port is always at a certain position below the liquid surface. When the equipment input part 43 continuously takes in sewage, the equipment input part 43 and the discharge pipe 8 basically maintain a stable liquid level. During the process of sediment in the sewage sinking to the bottom, the water intake pipe 5 always takes water from the top, which to a certain extent prevents the sediment from entering the water intake pipe 5, so that the sediment is trapped inside the equipment.

[0043] The sewage pipe 7 has a bottom end connected to the water outlet trough 442, and the other end of the sewage pipe 7 passes through the outside of the box and is connected to the discharge pipe 8. The water from which the floating objects are extracted in the output part 44 is directly discharged through the sewage pipe 7, which saves the process of falling to the bottom of the sewage tank 1 and then being taken out by the water intake pipe 5. At the same time, it avoids the situation to a certain extent that the water impacts the bottom of the sewage tank 1 and causes the sediment to be mixed again.

[0044] Working principle of this device:

[0045] The sewage enters the grit settling device 4 in the sewage tank 1 through the input part 43. Under the action of the deflector, the sewage rotates and flows along the inner wall of the shell 41 and is placed inside the shell 41. The sediment in the sewage settles to the bottom of the shell 41 under the action of gravity. The sediment and the water body are stored in the shell 41 through the sealing of the block 46. As the liquid level continues to rise, the floating objects in the sewage rise until they reach the position of the output part 44. Under the action of the vortex in the shell 41, part of the sewage and the floating objects flow into the overflow trough 441. The floating objects are lifted and processed by the floating object lifting mechanism 3 on the overflow trough 441. The sewage after the floating objects are separated continues to flow out along the outlet trough 442, and is discharged into the discharge pipe 8 by the sewage pipe 7 connected to the outlet trough 442, and is discharged to the outside through the discharge pipe 8.

[0046] After the sediment in the sand settling device 4 accumulates to a certain extent or for a certain period of time, the sealing block 46 is driven by the telescopic driving source 47 to move upward in the shell 41. After the sealing block 46 moves upward, the sewage and sediment fall through the gap between the sealing block 46 and the inner wall of the shell 41 until the sewage and sediment in the sand settling device 4 are emptied. Then the sealing block 46 is reset to carry out the next round of separation of sediment and floating objects in the sewage.

[0047] The sediment falls into the sewage tank 1, and is lifted up by the sediment lifting mechanism 2 at the bottom of the sewage tank 1. During the discharge of the sewage in the sewage tank 1, the rotatable water intake pipe 5 is operated by the float 6 so that the water intake port of the water intake pipe 5 is always located at a certain position below the liquid surface, thereby preventing the sediment from entering the water intake pipe 5 to a certain extent, so that the sediment is trapped inside the equipment, and the sewage in the water intake pipe 5 flows to the discharge pipe 8, and the discharge pipe 8 discharges the sewage to the outside.

[0048] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A sand settling device, characterized in that: include: A shell, wherein the shell has a cavity inside, an input part and an output part are connected to the outer wall of the shell, the input part and the output part are both connected to the cavity, and the bottom of the shell has an opening; A sealing block is used for sealing the opening, and the sealing block can be slidably arranged up and down.

2. A sand trap according to claim 1, characterized in that: The sealing block is located inside the cavity; it also includes a telescopic driving source, the telescopic driving source is connected to a connecting rod, and the connecting rod is connected to the sealing block to drive it to slide up and down.

3. A sand trap according to claim 2, characterized in that: The connecting rod is in a "U" shape and is located outside the shell, one end of the connecting rod is connected to the telescopic driving source, and the other end of the connecting rod is connected to the sealing block.

4. A sand trap according to claim 2, characterized in that: The upper part of the shell is a cylindrical structure, and the bottom of the shell is an inverted cone structure.

5. A sand trap according to claim 4, characterized in that: The sealing block comprises a sealing portion and a guiding portion. The sealing portion is an inverted cone structure, and the outer wall is in contact with the inner wall of the bottom of the shell. The guiding portion is a cone structure for dispersing the settled sand to the periphery.

6. A sand trap according to claim 4, characterized in that: It also includes a drainage cover, which is located in the cavity and is connected to the input part for controlling the flow direction of sewage.

7. A sand trap according to claim 1, characterized in that: The output part is located at the upper part of the shell, and the output part includes an overflow groove and a water outlet groove connected to each other. The top of the overflow groove is in an open state, and the overflow groove and the water outlet groove are connected to form an "L" shape structure.

8. A sewage solid-liquid separation device, comprising a sewage tank, wherein a sediment lifting mechanism and a floating object lifting mechanism are arranged in the sewage tank, characterized in that: Also includes: A sand settling device according to any one of claims 1 to 7, wherein the sand settling device is located inside a sewage tank; wherein the input portion penetrates and extends to the outside of the tank, and the overflow trough is adapted to a floating object lifting mechanism to lift floating objects; A rotatable water intake pipe located inside the sewage tank, with floats connected to the sewage pipe at intervals, the water intake pipe is connected to a discharge pipe, and the discharge pipe is located outside the sewage tank; A sewage pipe, the bottom end of which is connected to the water outlet trough, and the other end of which passes through the outside of the box and is connected to the discharge pipe.

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