Sand-water separation device

Abstract

The utility model relates to the field of sewage treatment discloses a sand and water separation device, including screw conveyor, baffle, sewage emptying pipe and backflushing pipe, the feed end of screw conveyor is provided with the open mouth and is located the bottom of device casing, baffle is hinged in the bottom of device casing, sewage emptying pipe connects the outside of device casing, the baffle is located the inlet end of sewage emptying pipe, backflushing pipe sets up in sewage emptying pipe, in the working condition, the water that sprays in backflushing pipe pushes baffle and rotates to the device casing inner chamber. The utility model has the beneficial effect that after the sand and stone in the device casing are transported out by screw conveyor, the pressurized water that sprays from the backflushing pipe outlet pushes baffle and rotates to the direction of device casing inner chamber, and pushes the sand and stone that have not been transported out to the side that baffle is away from the inlet of sewage emptying pipe when baffle rotates, and then makes the sewage enter into the sewage emptying pipe from the gap that baffle opens.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment, specifically to a sand-water separation device. Background Technology

[0002] Sand-water separation devices in wastewater treatment plants are key equipment in the pretreatment stage. They are mainly used to separate large inorganic particles (such as sand, gravel, and cinders) from wastewater to prevent inorganic particles from causing wear, blockage, or deposition on subsequent treatment equipment (such as water pumps, aerators, and pipelines), while also reducing the sludge treatment load.

[0003] Existing sand-water separation devices have a drain pipe and a screw conveyor at the bottom. The screw conveyor transports the sand and gravel located at the bottom of the separator shell to the outside of the device, and the wastewater is discharged through the drain pipe at the bottom of the separator shell. However, because the shell at the feed end of the screw conveyor has a certain thickness, the sand and gravel between the feed end shell and the bottom of the device shell cannot be discharged by the screw conveyor. Since the drain pipe is located at the very bottom of the device shell, the sand and gravel that are not transported out will block the inlet of the drain pipe, affecting the efficiency of the drain pipe in discharging wastewater. Utility Model Content

[0004] The technical problem to be solved by this utility model is that in existing sand-water separation devices, the sand and gravel located at the inlet of the drain pipe cannot be discharged by the screw conveyor, resulting in the sand and gravel clogging the inlet of the drain pipe and affecting the sewage discharge effect of the drain pipe. The purpose is to provide a sand-water separation device in which, after the screw conveyor transports the sand and gravel out of the device housing, the pressurized water sprayed from the outlet of the backwash water pipe pushes the baffle to rotate towards the inner cavity of the device housing. When the baffle rotates, it pushes the sand and gravel that has not been transported out to the side of the baffle away from the sewage drain pipe inlet, so that the sewage enters the sewage drain pipe from the gap of the baffle opening.

[0005] This utility model is achieved through the following technical solution:

[0006] A sand-water separation device includes a screw conveyor, a baffle, a sewage discharge pipe, and a backwash pipe. The feed end of the screw conveyor is open and located at the bottom of the device housing. The baffle is hinged to the bottom of the device housing. The sewage discharge pipe is connected to the outside of the device housing, and the baffle is located at the inlet end of the sewage discharge pipe. The backwash pipe is disposed inside the sewage discharge pipe. In operation, water sprayed from the backwash pipe pushes the baffle to rotate into the inner cavity of the device housing.

[0007] The beneficial effects of this utility model are as follows: by setting an opening at the feed end of the screw conveyor and placing the feed end of the screw conveyor at the bottom of the device housing, it is convenient to output the sand and gravel that have settled in the bottom area of ​​the device housing through the screw conveyor. A baffle is also hinged at the bottom of the device housing, and a sewage drain pipe is connected to the outside of the device housing. A backflushing water pipe is installed in the sewage drain pipe. After the screw conveyor has transported the sand and gravel out of the device housing and no new sand and water has entered the device housing, the pressurized water sprayed from the outlet of the backflushing water pipe pushes the baffle to rotate towards the inner cavity of the device housing. When the baffle rotates, it pushes the sand and gravel that has not been transported out to the side of the baffle away from the inlet of the sewage drain pipe, so that the sewage enters the sewage drain pipe from the gap of the baffle opening, thereby realizing the drainage of sewage.

[0008] In some embodiments, the device housing is conical, the screw conveyor is formed on one side of the device housing, and the feed end of the screw conveyor is located at the bottom cone of the device housing. By forming the screw conveyor on one side of the device housing, a narrow space that obstructs the flow of sand and gravel is prevented from forming at the connection between the screw conveyor and the device housing, allowing the sand and gravel located inside the device housing to smoothly enter the screw conveyor.

[0009] In some embodiments, the baffle is disposed on the side wall directly opposite the screw conveyor, and the vertical projection of the baffle lies within the sewage discharge pipe. By arranging the baffle facing the screw conveyor, sand and gravel in the space formed between the screw conveyor feed end housing and the baffle can be pushed away from the sewage discharge pipe inlet by the baffle when it flips over. Furthermore, by placing the vertical projection of the baffle within the sewage discharge pipe, it ensures that all sewage can enter the sewage discharge pipe after the baffle is opened.

[0010] In some embodiments, the baffle is hinged to the device housing via hinges. Both the screw conveyor feed end housing and the device housing are provided with recessed platforms. When the screw conveyor is conveying sand and gravel, the baffle abuts against the bottom of the recessed platforms. Hinging the baffle to the device housing via hinges, and providing recessed platforms on both the screw conveyor feed end housing and the device housing, facilitates the baffle's press against the recessed platforms of the device housing and screw conveyor housing under its own weight and the force of the sand and gravel when the backwash pipe is not flushed. This prevents sand and gravel from entering the sewage discharge pipe when the screw conveyor is conveying sand and gravel.

[0011] In some embodiments, the inlet end of the backflush pipe is connected to the tap water pipe, and the outlet end is located at the lower end of the baffle. A shut-off valve is provided on the backflush pipe. By providing a shut-off valve on the backflush pipe, it is convenient to open and close the backflush pipe, thereby realizing the opening and closing of the tap water.

[0012] In some embodiments, a clamp is installed at the outlet end of the sewage drain pipe, and the backflushing water pipe is connected to the inner cavity of the sewage drain pipe through the clamp. The clamp at the outlet end of the sewage drain pipe facilitates the positioning of the backflushing water pipe.

[0013] In some embodiments, a supernatant outlet is provided at the top of the device housing, and the supernatant outlet is located on the side away from the screw conveyor. By providing a supernatant outlet on the side wall away from the screw conveyor, water located at the upper end of the device housing can be discharged from the supernatant outlet into the treatment tank.

[0014] In some embodiments, a sand discharge pipe is further included, which is connected to the output end of the screw conveyor and has its outlet facing downwards. By providing the sand discharge pipe, sand and gravel output from the device housing enter the sand and gravel collection box through the outlet of the sand discharge pipe.

[0015] In some embodiments, a first sand-water inlet and a second sand-water inlet are also included, both of which are located at the top of the device housing. Since the sand-water pressure entering the device housing from the two sand-water pools may be different, providing a single sand-water inlet would prevent the sand-water with higher pressure from entering the device housing from the sand-water with lower pressure. Therefore, providing a first sand-water inlet and a second sand-water inlet at the top of the device housing ensures that the sand-water from the two sand-water pools can smoothly enter the device housing respectively.

[0016] In some embodiments, the device also includes a support frame comprising a plurality of vertical rods and a plurality of horizontal rods, the horizontal rods being connected to the middle of corresponding vertical rods, and the tops of the vertical rods being connected to the screw conveyor and the device housing, respectively. The support frame provides support and positioning for the screw conveyor and the device housing.

[0017] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0018] 1. After the screw conveyor transports the sand and gravel out of the device housing, the pressurized water sprayed from the backwash water pipe outlet pushes the baffle to rotate towards the inner cavity of the device housing. When the baffle rotates, it pushes the sand and gravel that has not been transported out to the side of the baffle away from the sewage drain pipe inlet, so that the sewage enters the sewage drain pipe from the gap of the baffle opening.

[0019] 2. By making the screw conveyor one side of the device housing, a narrow space that obstructs the flow of sand and gravel is prevented from forming at the connection between the screw conveyor and the device housing, so that the sand and gravel located inside the device housing can smoothly enter the screw conveyor.

[0020] 3. Since the sand and water pressures entering the device housing from the two sand and water pools may be different, a sand and water inlet is set up. The sand and water with higher pressure will affect the sand and water with lower pressure from entering the device housing. Therefore, a first sand and water inlet and a second sand and water inlet are set up at the top of the device housing to ensure that the sand and water from the two sand and water pools can enter the device housing smoothly respectively. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is a cross-sectional view of the baffle in this utility model when it is not open;

[0023] Figure 2 This is a cross-sectional view of the baffle in this utility model when it is open;

[0024] Figure 3 This is a diagram showing the internal structure of the housing of the device in this utility model.

[0025] The attached diagram shows the markings and corresponding component names:

[0026] Screw conveyor 10, sand outlet pipe 11, open end 12, device shell 20, baffle 21, supernatant outlet 22, backwash water pipe 30, clamp 31, sewage drain pipe 32, device support 40, first sand and water inlet 50, second sand and water inlet 51. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0028] Throughout this specification, references to "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "an embodiment," "an example," "an example," or "an example" appearing in various places throughout the specification do not necessarily refer to the same embodiment or example. Furthermore, specific features, structures, or characteristics can be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. Moreover, those skilled in the art will understand that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] In the description of this utility model, the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0030] The terms "first," "second," etc., used in this utility model are merely for clarity of description and are not intended to limit any order or emphasize importance. Furthermore, the term "connection" as used herein, unless otherwise specified, can refer to a direct connection or an indirect connection via other components.

[0031] Example

[0032] like Figures 1-3 As shown, this embodiment provides a sand-water separation device, including a screw conveyor 10, a baffle 21, a sewage discharge pipe 32, and a backwash water pipe 30. The feed end of the screw conveyor 10 is provided with an opening 12 and is located at the bottom of the device housing 20. The baffle 21 is hinged to the bottom of the device housing 20. The sewage discharge pipe 32 is connected to the outside of the device housing 20, and the baffle 21 is located at the inlet end of the sewage discharge pipe 32. The backwash water pipe 30 is disposed inside the sewage discharge pipe 32. In the working state, the water sprayed out of the backwash water pipe 30 pushes the baffle 21 to rotate into the inner cavity of the device housing 20. After the screw conveyor 10 has transported the sand and gravel out of the device housing 20, and no new sand or water has entered the device housing 20, the pressurized water sprayed from the outlet of the backwash pipe 30 pushes the baffle 21 to rotate toward the inner cavity of the device housing 20. When the baffle 21 rotates, it pushes the sand and gravel that has not been transported out to the side of the baffle 21 away from the inlet of the sewage drain pipe 32, so that the sewage enters the sewage drain pipe 32 from the gap opened by the baffle 21, thereby realizing the discharge of sewage.

[0033] See Figures 1-3 The device housing 20 is conical in shape, and the screw conveyor 10 forms one side of the device housing 20. The feed end of the screw conveyor 10 is located at the bottom cone of the device housing 20. By making the screw conveyor 10 one side of the device housing 20, a narrow space that obstructs the flow of sand and gravel is prevented from forming at the connection between the screw conveyor 10 and the device housing 20, allowing the sand and gravel inside the device housing 20 to smoothly enter the screw conveyor 10.

[0034] See Figures 1-3The baffle 21 is disposed on the side wall directly opposite the screw conveyor 10, and the vertical projection of the baffle 21 is located inside the sewage discharge pipe 32. By arranging the baffle 21 facing the screw conveyor 10, the sand and gravel in the space formed between the feed end housing of the screw conveyor 10 and the baffle 21 can be pushed away from the inlet of the sewage discharge pipe 32 by the baffle 21 when it is flipped up. Furthermore, by placing the vertical projection of the baffle 21 inside the sewage discharge pipe 32, it is ensured that all sewage can enter the sewage discharge pipe 32 after the baffle 21 is opened.

[0035] See Figures 1-3 The baffle 21 is hinged to the device housing 20. Both the feed end housing of the screw conveyor 10 and the device housing 20 have recessed platforms. When the screw conveyor 10 is conveying sand and gravel, the baffle 21 abuts against the bottom of the recessed platforms. Hinging the baffle 21 to the device housing 20 and providing recessed platforms on both the feed end housing of the screw conveyor 10 and the device housing 20 allows the baffle 21 to be pressed against the recessed platforms of the device housing 20 and the screw conveyor 10 housing under its own weight and the action of the sand and gravel when the backwash pipe 30 is not flushing. This prevents sand and gravel from entering the sewage discharge pipe 32 when the screw conveyor 10 is conveying sand and gravel.

[0036] See Figure 1 and Figure 2 Specifically, a rubber ring can also be provided on the baffle 21. The baffle 21 has a groove for installing the rubber ring. When the screw conveyor 10 is conveying sand and gravel, the side of the sealing ring away from the baffle 21 abuts against the sinking platform to improve the sealing effect of the baffle 21.

[0037] See Figures 1-3 The inlet end of the backflush water pipe 30 is connected to the tap water pipe, and the outlet end is located at the lower end of the baffle 21. A shut-off valve is provided on the backflush water pipe 30. By providing a shut-off valve on the backflush water pipe 30, it is convenient to open and close the backflush water pipe 30 through the shut-off valve, thereby realizing the opening and closing of the tap water.

[0038] See Figures 1-3 A clamp 31 is installed at the outlet end of the sewage discharge pipe 32, and the backflushing water pipe 30 is connected to the inner cavity of the sewage discharge pipe 32 through the clamp 31. By setting the clamp 31 at the outlet end inside the sewage discharge pipe 32, it is convenient to position the backflushing water pipe 30.

[0039] See Figures 1-3The top of the device housing 20 is provided with a supernatant outlet 22, which is located on the side away from the screw conveyor 10. By providing the supernatant outlet 22 on the side wall away from the screw conveyor 10, water located at the upper end of the device housing 20 can be discharged from the supernatant outlet 22 into the treatment tank.

[0040] See Figures 1-3 It also includes a sand discharge pipe 11, which is connected to the output end of the screw conveyor 10, and the outlet of the sand discharge pipe 11 faces downward. By setting the sand discharge pipe 11, the sand and gravel output from the device housing 20 enter the sand and gravel collection box from the outlet of the sand discharge pipe 11.

[0041] See Figures 1-3 It also includes a first sand-water inlet 50 and a second sand-water inlet 51, both of which are located at the top of the device housing 20. Since the sand-water pressure entering the device housing 20 from the two sand-water pools may be different, setting up a single sand-water inlet would prevent the sand-water with higher pressure from entering the device housing 20 with lower pressure. Therefore, the first sand-water inlet 50 and the second sand-water inlet 51 are located at the top of the device housing 20 to ensure that the sand-water from the two sand-water pools can smoothly enter the device housing 20 respectively.

[0042] See Figures 1-3 It also includes a device support 40, which comprises several vertical rods and several horizontal rods. The horizontal rods are respectively connected to the middle of the corresponding vertical rods, and the tops of the vertical rods are respectively connected to the screw conveyor 10 and the device housing 20. The support is used to support and position the screw conveyor 10 and the device housing 20.

[0043] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A sand-water separation device, characterized in that, include: A screw conveyor, wherein the feed end of the screw conveyor is provided with an opening and is located at the bottom of the device housing; A baffle, which is hinged to the bottom of the device housing; A sewage discharge pipe is connected to the outside of the device housing, and the baffle is located at the inlet end of the sewage discharge pipe; A backflush pipe is installed inside the sewage drain pipe. In operation, the water sprayed from the backflush pipe pushes the baffle to rotate into the inner cavity of the device housing.

2. A sand-water separation device according to claim 1, characterised in that The device housing is in the shape of a conical prism, the screw conveyor is formed on one side of the device housing, and the feed end of the screw conveyor is located at the bottom cone of the device housing.

3. The sand water separation device of claim 1, wherein, The baffle is disposed on the side wall directly opposite the screw conveyor, and the vertical projection of the baffle is located inside the sewage discharge pipe.

4. The sand water separation device of claim 1, wherein, The baffle is hinged to the device housing. Both the feed end housing of the screw conveyor and the device housing are provided with a recessed platform. When the screw conveyor is conveying sand and gravel, the baffle abuts against the bottom of the recessed platform.

5. The sand-water separation device according to claim 1, characterized in that, The inlet end of the backwash water pipe is connected to the tap water pipe, and the outlet end is located at the lower end of the baffle. A shut-off valve is installed on the backwash water pipe.

6. A sand-water separation device according to claim 5, characterised in that The outlet end of the sewage discharge pipe is equipped with a clamp, and the backflushing water pipe is connected to the inner cavity of the sewage discharge pipe through the clamp.

7. A sand water separation device according to claim 5, characterised in that The top of the device housing is provided with a supernatant outlet, which is located on the side away from the screw conveyor.

8. A sand water separation device according to any one of claims 1-7, characterized in that It also includes a sand discharge pipe, which is connected to the output end of the screw conveyor and has its outlet facing downwards.

9. A sand water separation device according to any one of claims 1-7, characterized in that It also includes a first sand-water inlet and a second sand-water inlet, both of which are located on the top of the device housing.

10. A sand water separation device according to any one of claims 1 to 7, wherein, It also includes a device support, which includes several vertical bars and several horizontal bars. The horizontal bars are respectively connected to the middle of the corresponding vertical bars, and the tops of the vertical bars are respectively connected to the screw conveyor and the device housing.

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