A sewage sand washing slag blocking device

Abstract

The present invention is applicable to the field of sewage treatment, and provides a sewage sand washing slag interception device, which includes a slag collection tank and a barrel body arranged in the slag collection tank. A spiral slag interception tank is arranged in the barrel body. An inlet is arranged at the head end position of the spiral slag interception tank. The spiral slag interception tank includes an integrally formed slag guiding tank and a spiral grille net. The spiral grille net is located on the outer ring of the slag guiding tank and is inclined. Gradual change type mesh holes are arranged on both the spiral grille net and the slag guiding tank. The gradual change type mesh holes are gradually denser from top to bottom, and the hole diameters gradually decrease. The hole diameter of the mesh holes on the slag guiding tank at the same position is smaller than the hole diameter of the mesh holes on the spiral grille net. Distribution holes are arranged at the bottom of the barrel body and the bottom of the slag collection tank. This device has functions such as interception, sand washing, separation, and collection, and can be integrated inside an integrated device or in the idle space on the upper layer of a water tank, which is very convenient to use and maintain, and improves the pretreatment effect of sewage.

Description

Technical Field

[0001] The present invention belongs to the field of sewage treatment, and particularly relates to a sewage sand washing slag intercepting device. Background Art

[0002] In sewage treatment projects, garbage interception and separation are very important processes. To ensure the normal and stable operation of the subsequent treatment system, it is better to intercept the garbage and sand in the sewage as thoroughly as possible. However, traditional interception means are all through mechanical or manual grilles with multiple different gaps, which require a large number of equipment and control systems for management. In the sand washing stage, a large amount of energy is required for washing and separation, and the design of its washing and separation process is complex and the cost is high. In the environment of small sewage treatment plants and sewage treatment stations, due to limited cost budgets and limited land supply, these treatment links are basically omitted in many cases, which will cause various potential risks such as instability and blockage of the sewage treatment system. Summary of the Invention

[0003] In view of the above problems, the purpose of the present invention is to provide a sewage sand washing slag intercepting device, aiming to solve the technical problems of complex design and high cost in existing sewage treatment projects.

[0004] The present invention adopts the following technical solutions:

[0005] The sewage sand washing slag intercepting device includes a slag collecting tank and a barrel disposed in the slag collecting tank. A spiral slag intercepting tank is provided in the barrel. An inlet is provided at the head end position of the spiral slag intercepting tank. The spiral slag intercepting tank includes an integrally formed slag guiding groove and a spiral grille net. The spiral grille net is located on the outer circle of the slag guiding groove and is inclined. Gradual change type mesh holes are provided on both the spiral grille net and the slag guiding groove. The gradual change type mesh holes are gradually denser from top to bottom, and the aperture gradually decreases. The aperture of the mesh holes on the slag guiding groove at the same position is smaller than the aperture of the mesh holes on the spiral grille net. Distribution holes are provided at the bottom of both the barrel and the slag collecting tank.

[0006] Further, the end of the spiral slag intercepting tank extends out of the barrel and is provided with an outlet.

[0007] Further, the pitch of the spiral slag intercepting tank gradually increases from top to bottom.

[0008] Further, the aperture of the distribution holes at the bottom of the barrel is the same as the aperture of the mesh holes at the end of the slag guiding groove.

[0009] Further, the aperture of the distribution holes at the bottom of the slag collecting tank is smaller than the aperture of the distribution holes at the bottom of the barrel.

[0010] Further, the barrel is of a basket-type barrel structure.

[0011] The beneficial effects of the present invention are as follows: The present invention provides a sewage sand washing and slag intercepting device, which has functions such as intercepting, sand washing, separating, and collecting. It can be integrated inside an integrated device or in the idle space on the upper layer of a water tank, making it very convenient to use and maintain. It improves the pretreatment effect of sewage, solves the drawbacks of the traditional grille interception that requires multiple levels of setting and the complex process and large floor area caused by the need for a sand sedimentation and washing device; The spiral slag intercepting trough includes an integrally formed slag guiding trough and a spiral grille net, and both the spiral grille net and the slag guiding trough are provided with gradually changing mesh holes, which can effectively prevent the leakage of the collected grille slag; Under the guiding action of the spiral slag intercepting trough, the sewage will be in a state of high-speed swirling and internal turbulence, and a strong sand washing and centrifugal separation effect can be formed; This device can be integrated in the upper space inside the sewage treatment system without the need for separate space reservation, effectively saving equipment space. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is the structural diagram of the sewage sand washing and slag intercepting device provided by an embodiment of the present invention;

[0013] Figure 2 is the structural diagram of the spiral slag intercepting trough provided by an embodiment of the present invention;

[0014] Figure 3 is the application schematic diagram of the sewage sand washing and slag intercepting device provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] In order to make the objectives, technical solutions, and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0016] In order to illustrate the technical solutions described in the present invention, the following will be described through specific embodiments.

[0017] Figure 1 shows the structure of the sewage sand washing and slag intercepting device provided by an embodiment of the present invention. For the convenience of description, only the parts related to the embodiment of the present invention are shown.

[0018] As Figure 1 、 2As shown in the figure, the sewage sand washing slag interception device provided in this embodiment includes a slag collection tank 1 and a barrel 2 arranged in the slag collection tank. A spiral slag interception tank is provided in the barrel 2. An inlet 5 is provided at the head end of the spiral slag interception tank, and the end of the spiral slag interception tank extends out of the barrel 2 and is provided with an outlet 6. The spiral slag interception tank includes an integrally formed slag guiding groove 3 and a spiral grille 4. The spiral grille 4 is located on the outer ring of the slag guiding groove 3 and is inclined. Gradual meshes (not shown in the figure) are provided on both the spiral grille 4 and the slag guiding groove 3. The gradual meshes are gradually denser from top to bottom, and the aperture gradually decreases. The aperture of the mesh on the slag guiding groove 3 at the same position is smaller than the aperture of the mesh on the spiral grille 4. Distribution holes are provided at the bottom of both the barrel 2 and the slag collection tank 1.

[0019] Among them, the spiral slag interception tank includes an integrally formed slag guiding groove and a spiral grille. The spiral grille is located on the outer ring of the slag guiding groove and is inclined upward. And the aperture of the mesh on the slag guiding groove at the same position is smaller than the aperture of the mesh on the spiral grille. During the sewage swirling process, part of the garbage and sand are intercepted in the slag guiding groove, and the other part of the garbage and sand are separated from the slag guiding groove under the action of centrifugal force and flow towards the spiral grille. The spiral grille can also intercept the garbage and sand, effectively increasing the interception area and preventing the grid slag from accumulating on the slag guiding groove and affecting the subsequent sewage treatment. In addition, the inclined structure of the spiral grille can also play a guiding role.

[0020] In this embodiment, the pitch of the spiral slag interception tank gradually increases from top to bottom. Under the guiding action of the spiral slag interception tank, the sewage will be in a state of high-speed swirling and internal turbulence, and a strong sand washing and centrifugal separation effect can be formed. Gradual meshes are provided on both the spiral grille and the slag guiding groove. The gradual meshes are gradually denser from top to bottom, and the aperture gradually decreases. In the upper space of the spiral slag interception tank, larger garbage can be intercepted. As the water flow speed gradually increases, the sewage flows into the lower space of the spiral slag interception tank, and smaller garbage and sand will also be intercepted. This kind of gradual mesh structure can achieve the effect of hierarchical filtration, preventing the grid slag from accumulating in a certain place and affecting the subsequent sewage treatment.

[0021] More specifically, the aperture of the distribution hole at the bottom of the barrel 2 is the same as the aperture of the mesh at the end of the slag guiding groove 3. Setting distribution holes at the bottom of the barrel can prevent a small amount of floating or overflowing garbage from falling into the slag collection tank.

[0022] The aperture of the distribution hole at the bottom of the slag collection tank 1 is smaller than the aperture of the distribution hole at the bottom of the barrel 2. After the garbage and sand in the sewage are separated by the spiral slag interception tank, they will be washed into the slag collection tank by the water flow for temporary storage, and the sewage will flow into the sewage treatment system.

[0023] The barrel is a basket-type barrel structure, and the installation and disassembly are very convenient, which is convenient for regular cleaning of the grid slag in the barrel and the slag collection tank.

[0024] As Figure 3 shown, after the sewage is separated and washed, it can directly flow into the sewage treatment system. There is no need to design a separate grille tank, which can be integrated into the upper space inside the sewage treatment system without the need for separate reserved space, effectively saving equipment space.

[0025] When this device works, the sewage has a certain initial velocity after flowing by gravity or being lifted by a lift pump, and flows tangentially into through the water inlet. At the same time, under the action of gravity, the flow velocity will become larger and larger. In the upper space of the spiral slag interception tank, larger garbage is intercepted. When the small particle garbage and sand that leak and flow with the water flow to the middle and lower sections of the spiral slag interception tank, the smaller garbage and sand will also be intercepted. When the water flows out from the water outlet, a part of the water carries the intercepted garbage and sand and flows into the slag collection tank for collection, and the other part of the water penetrates the distribution holes at the bottom of the slag collection tank and flows into the sewage treatment system.

[0026] In summary, the present invention provides a sewage sand washing and slag interception device, which has functions such as slag interception, sand washing, separation, and collection. It can be integrated into the inside of an integrated device or the idle space on the upper layer of a pool, and is very convenient to use and maintain. It improves the pretreatment effect of sewage, solves the disadvantages of the traditional grille interception that requires multi-stage setting and the complex process and large floor area caused by the need for a sediment washing and sand washing device; the spiral slag interception tank includes a slag guiding tank and a spiral grille net that are integrally formed, and both the spiral grille net and the slag guiding tank are provided with gradually changing mesh holes, which can effectively prevent the leakage of the collected grille slag; under the guiding action of the spiral slag interception tank, the sewage will be in a state of high-speed swirling flow and internal turbulent flow, and can form a strong sand washing and centrifugal separation effect; this device can be integrated into the upper space inside the sewage treatment system without the need for separate reserved space, effectively saving equipment space.

[0027] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A sewage sand washing slag blocking device, characterized in that, It includes a slag collecting tank and a barrel body arranged in the slag collecting tank. A spiral slag blocking tank is arranged inside the barrel body. An inlet is arranged at the head end position of the spiral slag blocking tank. The spiral slag blocking tank includes an integrally formed slag guiding tank and a spiral grille net. The spiral grille net is located on the outer ring of the slag guiding tank and is inclined. Gradient meshes are arranged on both the spiral grille net and the slag guiding tank. The gradient meshes become denser and the aperture gradually decreases from top to bottom. The aperture of the mesh on the slag guiding tank at the same position is smaller than that of the mesh on the spiral grille net. Distribution holes are arranged at the bottom of both the barrel body and the slag collecting tank; the pitch of the spiral slag blocking tank gradually increases from top to bottom; the aperture of the distribution hole at the bottom of the barrel body is the same as the aperture of the mesh at the end of the slag guiding tank; the aperture of the distribution hole at the bottom of the slag collecting tank is smaller than the aperture of the distribution hole at the bottom of the barrel body.

2. The sewage sand washing slag blocking device according to claim 1, characterized in that, The end of the spiral slag blocking tank extends out of the barrel body and is provided with a water outlet.

3. The sewage sand washing slag intercepting device according to claim 2, wherein, The barrel body is of a basket-type barrel body structure.

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