Gas washing device for inclined plate sedimentation tank

Abstract

A gas washing device for an inclined plate sedimentation tank relates to the technical field of water treatment devices and comprises a gas supply main pipe and a plurality of gas supply branch pipes, the end parts of the gas supply branch pipes are gathered on the gas supply main pipe and are communicated with the gas supply main pipe, and gas holes for gas to flow out are formed in the side surfaces of the gas supply branch pipes; the air supply branch pipes are arranged in groups, and every two air supply branch pipes form one group; in each group of air supply branch pipes, the end parts of the two air supply branch pipes are connected to the air supply main pipe through air path switching valves; the gas circuit switching valve structurally comprises a valve body and a valve element, and the valve element is installed in the valve body and can slide under the control of external force; an inlet, an outlet A and an outlet B are formed in the outer side of the valve body, the inlet is connected to the side face of the air supply main pipe through a pipeline, and the outlet A and the outlet B are connected to the ends of the two air supply branch pipes respectively. According to the cleaning device, every two air supply branch pipes form a group, the air path switching valves are arranged, the on-off states of all the air supply branch pipes are switched through the air path switching valves, and a better cleaning effect can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of water treatment devices, and in particular relates to an air washing device for an inclined plate sedimentation tank. Background Art

[0002] Inclined plate sedimentation tank is a common water treatment equipment. There are many inclined plates in the inclined plate sedimentation tank. After the sewage flows through the inclined plates, the impurities in the sewage are settled on the inclined plates. When the impurities accumulate on the inclined plates to a certain extent, they will slide down from the inclined plates, thereby achieving the separation of impurities in the sewage.

[0003] After the inclined plate sedimentation tank has been used for a period of time, a lot of scale will accumulate on the inclined plate, especially on the lower part of the inclined plate, and needs to be cleaned. In order to clean the inclined plate in time without affecting production, technicians set up an air washing device in the inclined plate sedimentation tank. The air washing device can deliver gas to the lower part of the inclined plate, and use the disturbance caused by the air flow in the water to make the scale on the inclined plate fall off, thereby cleaning the inclined plate.

[0004] The structure of the existing air washing device includes a gas supply main pipe and several gas supply branch pipes. The ends of each gas supply branch pipe are gathered on the gas supply main pipe and connected to the gas supply main pipe. The gas entering the gas supply main pipe is first distributed to each gas supply branch pipe, and then ejected through the air holes on the side of the gas supply branch pipe.

[0005] In the above-mentioned prior art, all the air supply branches work simultaneously, and the air flow ejected from the air holes on the sides of the air supply branches has a slow velocity, resulting in a poor air washing effect. Utility Model Content

[0006] The utility model aims to provide an air washing device for an inclined plate sedimentation tank, and aims to improve the air washing effect by increasing the air flow injection speed.

[0007] An inclined plate sedimentation tank air washing device comprises an air supply main pipe and a plurality of air supply branch pipes, the ends of the air supply branch pipes are collected on the air supply main pipe and connected to the air supply main pipe, and the sides of the air supply branch pipes are processed with air holes for gas to flow out;

[0008] The gas supply branch pipes are arranged in groups, with every two gas supply branch pipes forming a group;

[0009] In each group of gas supply branch pipes, a gas path switching valve is provided between the ends of the two gas supply branch pipes and the gas supply main pipe;

[0010] The gas path switching valve comprises a valve body and a valve core, wherein the valve core is installed in the valve body and can slide under the control of an external force, thereby realizing the switching of the valve core position;

[0011] An inlet, an outlet A and an outlet B are arranged on the outside of the valve body, wherein the inlet is connected to the side of the gas supply main pipe through a pipeline, and the outlet A and the outlet B are respectively connected to the ends of the two gas supply branch pipes;

[0012] The inner side of the valve body is provided with a sealing inner boss A and a sealing inner boss B, and the outer side of the valve core is provided with a sealing outer boss A and a sealing outer boss B, the sealing outer boss A;

[0013] The valve core has three stay positions in the valve body, including two extreme positions and an intermediate position. When the valve core slides to an extreme position, the sealing outer boss A and the sealing inner boss A are sealed and matched, thereby isolating the outlet A and connecting the outlet B with the inlet; when the valve core slides to another extreme position, the sealing outer boss B and the sealing inner boss B are sealed and matched, thereby isolating the outlet B and connecting the outlet A with the inlet; when the valve core is in the intermediate position, both the outlet A and the outlet B are connected to the inlet.

[0014] As a preferred solution, there are two gas supply main pipes, and the two gas supply main pipes supply gas to the gas supply branch pipes from both ends of each gas supply branch pipe respectively.

[0015] As a preferred solution, two ends of the valve core extend from two ends of the valve body, and the valve cores of the gas path switching valves located at the same end of each gas supply branch pipe are connected end to end.

[0016] As a preferred solution, the valve core is driven by manpower.

[0017] As a preferred solution, the valve core is driven by electromagnetic force, that is, the gas path switching valve is specifically an electromagnetic gas path switching valve.

[0018] The beneficial effects of the utility model are as follows: 1. In the utility model, the gas supply branch pipes are grouped in pairs, and a gas circuit switching valve is provided. The on-off state of each gas supply branch pipe is switched by the gas circuit switching valve, so that each gas supply branch pipe is fully or partially connected to the gas circuit. The advantages are:

[0019] When the valve core is in the middle position, the outlet A and the outlet B are connected to the inlet at the same time, and the gas from the gas supply main pipe can enter all the gas supply branches. At this time, all the gas supply branches participate in the gas supply and can be used for gas washing operations under normal circumstances;

[0020] When the valve core is at a certain extreme position, only half of the air supply branch pipes participate in the air supply. When the air supply pressure of the air supply main pipe is constant, the air flow ejected from the air holes on the sides of the air supply branch pipes is faster, and the impact on the water flow and scale is more severe. When the scale has a greater adhesion to the inclined plate, it can produce a better cleaning effect.

[0021] 2. While the utility model adopts the gas circuit switching valve to realize the selective access of the gas supply branch pipe, it also creatively connects the valve cores of each gas circuit switching valve located on the same side of the gas supply branch pipe in series. Compared with setting a stop valve at the end of each gas supply branch pipe, only a little force is needed to drive the valve cores of multiple gas circuit switching valves, making it easier to synchronously control the on and off of each gas supply branch pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is the front view of the utility model.

[0023] Figure 2 yes Figure 1 Top view of the .

[0024] Figure 3 It is a structural diagram of the gas path switching valve when the valve core is in an extreme position.

[0025] Figure 4 It is a structural diagram of the gas path switching valve when the valve core is in the middle position.

[0026] Figure 5 It is a structural diagram of the gas path switching valve when the valve core is in another extreme position.

[0027] Figure 6 It is a structural schematic diagram of the gas path switching valves located at the same end of each gas supply branch pipe connected in series.

[0028] Figure 1 In the figure: 1. Gas supply main pipe; 2. Stop valve; 3. Gas line switching valve; 4. Gas supply branch pipe; 5. Valve core; 6. Inlet; 7. Outlet B; 8. Valve body; 9. Sealing outer boss B; 10. Sealing outer boss A; 11. Outlet A; 12. Sealing inner boss B; 13. Sealing inner boss A. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with 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.

[0030] like Figure 1 , 2 As shown, this embodiment includes a gas supply main pipe 1 and a plurality of gas supply branch pipes 4. The ends of the gas supply branch pipes 4 are collected on the gas supply main pipe 1 and communicated with the gas supply main pipe 1. The sides of the gas supply branch pipes 4 are processed with gas holes for gas to flow out. The above is a structure that already exists in the prior art and will not be repeated here.

[0031] like Figure 2As shown, in this embodiment, the gas supply branch pipes 4 are arranged in groups, and every two gas supply branch pipes 4 form a group. Each group of gas supply branch pipes 4 is connected to the side of the gas supply main pipe 1 through a pipeline and communicates with the gas supply main pipe 1. In each group of gas supply branch pipes 4, a gas circuit switching valve 3 is arranged on the pipeline between the ends of the two gas supply branch pipes 4 and the gas supply main pipe 1. The two gas supply branch pipes 4 are alternately connected to the gas supply main pipe 1 through the switching effect of the gas circuit switching valve 3.

[0032] like Figure 3 As shown, in this embodiment, the structure of the gas circuit switching valve 3 includes a valve body 8 and a valve core 5. The valve core 5 is installed in the valve body 8 and can slide under the control of an external force, thereby realizing the switching between different switch states of the gas circuit switching valve 3. An inlet 6, an outlet A11 and an outlet B7 are arranged on the outside of the valve body 8. The inlet 6 is used for air intake, and the outlets A11 and B7 are used for air outlet. Specifically, the inlet 6 is connected to the side of the gas supply main pipe 1 through a pipeline, and the outlet A11 and the outlet B7 are respectively connected to the ends of the two gas supply branch pipes 4. A sealing inner boss A13 and a sealing inner boss B12 are arranged on the inside of the valve body 8, and a sealing outer boss A10 and a sealing outer boss B9 are arranged on the outside of the valve core 5.

[0033] After the valve core 5 slides, when the sealing inner boss A13 and the sealing outer boss A10 are aligned (such as Figure 3 As shown in FIG. 1 ), the sealing inner boss B12 and the sealing outer boss B9 are misaligned, so that the inlet 6 and the outlet B7 are connected; when the valve core 5 is located in the middle of the valve body 8 (as ... Figure 4 As shown in FIG. 1 ), the sealing inner boss A13 is misaligned with the sealing outer boss A10, and the sealing inner boss B12 and the sealing outer boss B9 are also misaligned, so that the outlet A11 and the outlet B7 are both connected to the inlet 6; when the sealing inner boss B12 and the sealing outer boss B9 are aligned (as shown in FIG. Figure 5 As shown), the sealing inner boss A13 and the sealing outer boss A10 are misaligned, so that the inlet 6 and the outlet A11 are connected.

[0034] It should be noted that the specific sealing structure between the valve body 8 and the valve core 5 does not fall within the scope of protection required by the present application and is also relatively common in various hydraulic (pneumatic) control valves in the prior art, so it will not be described in detail here.

[0035] like Figure 1 , 2 As shown, there are two gas supply main pipes 1, and the two gas supply main pipes 1 supply gas to the gas supply branch pipes 4 from both ends of each gas supply branch pipe 4, so that the pressure distribution at various locations along the length direction of the gas supply branch pipes 4 is more balanced, thereby making the gas distribution uniformity of the gas supply branch pipes 4 better.

[0036] like Figure 2-6As shown, the two ends of the valve core 5 extend from the two ends of the valve body 8, and the valve cores 5 of each gas path switching valve 3 located at the same end of each gas supply branch pipe 4 are connected end to end. Compared with the stop valve 2 provided at the end of each gas supply branch pipe 4, only a little force is needed to drive the valve cores 5 of multiple gas path switching valves 3, making it easier to synchronously control the on and off of each gas supply branch pipe 4. It should be noted here that compared with other valve forms, the gas path switching valve 3 adopts a reciprocating sliding valve core 5, and the valve core 5 is more flexible in movement and has less sliding resistance, so it is easier to achieve simultaneous control with a little force.

[0037] During implementation, the valve core 5 can be driven by manpower, by electromagnetic force, or by a motor combined with a reciprocating motion mechanism such as a reciprocating screw, a crank connecting rod mechanism, etc.

[0038] During implementation, in order to reduce the requirement for the coaxiality of each valve core 5 when connected in series, a certain radial displacement can be allowed at the connection between two adjacent valve cores 5, that is, the two connected valve cores 5 can slide relatively in a small radial range along the valve core 5 after being connected. This is easy to implement for those skilled in the art and will not be elaborated here.

[0039] During implementation, in order to facilitate maintenance, a stop valve 2 can be set on the pipeline between the gas circuit switching valve 3 and the gas supply main pipe 1. The stop valve 2 is in a normally open state to ensure the normal operation of the air washing device. When maintenance is required, the stop valve 2 is closed to isolate the corresponding gas supply branch pipe 4 for easy replacement and repair.

[0040] Working principle:

[0041] The valve core 5 has three stop positions in the valve body 8, including two extreme positions and an intermediate position. When the valve core 5 slides to an extreme position, the sealing outer boss A10 and the sealing inner boss A13 are sealed and matched, thereby isolating the outlet A11 and connecting the outlet B7 with the inlet 6; when the valve core 5 slides to another extreme position, the sealing outer boss B9 and the sealing inner boss B12 are sealed and matched, thereby isolating the outlet B7 and connecting the outlet A11 with the inlet 6. When the valve core 5 is located at a certain extreme position, only half of the air supply branch pipe 4 participates in the air supply. When the air supply pressure of the air supply main pipe 1 is constant, the air flow ejected from the air hole on the side of the air supply branch pipe 4 is faster, and the impact on the water flow and scale is more severe. When the adhesion of the scale on the inclined plate is large, it can produce a better cleaning effect.

[0042] When the valve core 5 is in the middle position, the outlet A11 and the outlet B7 are both connected to the inlet 6, so that the gas from the gas supply main pipe 1 can enter all the gas supply branches 4. At this time, all the gas supply branches 4 participate in the gas supply and can be used for gas washing operations under normal circumstances.

Claims

1. An inclined plate sedimentation tank air washing device, comprising a main air supply pipe (1) and a plurality of branch air supply pipes (4), the ends of the branch air supply pipes (4) are collected on the main air supply pipe (1) and are connected to the main air supply pipe (1), and the side surfaces of the branch air supply pipes (4) are processed with air holes for gas outflow, characterized in that: The gas supply branch pipes (4) are arranged in groups, with every two gas supply branch pipes (4) forming a group; In each group of gas supply branch pipes (4), a gas path switching valve (3) is provided between the ends of the two gas supply branch pipes (4) and the gas supply main pipe (1); An air path switching valve (3) comprises a valve body (8) and a valve core (5), wherein the valve core (5) is installed in the valve body (8) and is capable of sliding under the control of an external force, thereby realizing switching of the position of the valve core (5); An inlet (6), an outlet A (11) and an outlet B (7) are provided on the outside of the valve body (8), wherein the inlet (6) is connected to the side of the gas supply main pipe (1) through a pipeline, and the outlet A (11) and the outlet B (7) are respectively connected to the ends of two gas supply branch pipes (4); The valve body (8) is provided with an inner sealing boss A (13) and an inner sealing boss B (12) on the inner side, and the valve core (5) is provided with an outer sealing boss A (10) and an outer sealing boss B (9) on the outer side. The outer sealing boss A (10); The valve core (5) has three stop positions in the valve body (8), including two extreme positions and an intermediate position. When the valve core (5) slides to one extreme position, the sealing outer boss A (10) and the sealing inner boss A (13) are sealed and matched, thereby isolating the outlet A (11) and connecting the outlet B (7) with the inlet (6); when the valve core (5) slides to another extreme position, the sealing outer boss B (9) and the sealing inner boss B (12) are sealed and matched, thereby isolating the outlet B (7) and connecting the outlet A (11) with the inlet (6); when the valve core (5) is in the intermediate position, both the outlet A (11) and the outlet B (7) are connected to the inlet (6).

2. The inclined plate sedimentation tank air washing device according to claim 1, characterized in that: There are two gas supply main pipes (1) in total, and the two gas supply main pipes (1) supply gas to the gas supply branch pipes (4) from both ends of each gas supply branch pipe (4) respectively.

3. The inclined plate sedimentation tank air washing device according to claim 2 is characterized in that: The two ends of the valve core (5) extend out from the two ends of the valve body (8), and the valve cores (5) of the gas path switching valves (3) located at the same end of each gas supply branch pipe (4) are connected end to end.

4. An inclined plate sedimentation tank air washing device according to any one of claims 1 to 3, characterized in that: The valve core (5) is driven by human power.

5. An inclined plate sedimentation tank air washing device according to any one of claims 1 to 3, characterized in that: The valve core (5) is driven by electromagnetic force, that is, the gas path switching valve (3) is specifically an electromagnetic gas path switching valve (3).

Images