Novel demineralized water pretreatment device

Abstract

The utility model relates to a novel demineralized water pretreatment device which comprises a support frame, two tank bodies, a connecting pipe and a control valve, wherein one tank body is installed in the supporting frame, the two tank bodies are connected through a connecting pipe and located on the same vertical line, and the control valve is assembled on the connecting pipe and used for controlling opening and closing of the connecting pipe. According to the novel desalting water pretreatment device, flocculated water in the upper side tank body is discharged into the lower side tank body through the connecting pipe and sequentially penetrates through the three filter screens in the lower side tank body, and the three filter screens with different pore diameters are arranged in the lower side tank body, so that a multi-stage filtering effect on the water body is achieved; according to the invention, flocculating constituents with different volumes in a water body can be effectively filtered and intercepted, and the problem that only large particles can be intercepted and small particles can pass through a filter layer due to limitation of the particle capturing capability of single-layer filtration is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of demineralized water production, and particularly relates to a novel demineralized water pretreatment device. Background Art

[0002] Demineralized water refers to the finished water obtained by removing impurities such as suspended solids, colloids, inorganic cations, and anions in water by using various water treatment processes. Its pretreatment process includes precipitation and sediment filtration. The former is to add a flocculant in a sedimentation tank to make the colloidal particles in water coalesce and precipitate with each other, and the latter is to filter the sediment in water.

[0003] Currently, in the method of filtering water bodies and sediments, a single-layer filtration method is usually used to filter sediments and water bodies. However, the particle capture ability of single-layer filtration is limited, and only larger particles can be intercepted, while smaller particles pass through the filter layer. This may result in the water quality not reaching the desired purity, and the single-layer filter is easily blocked by particles, especially when there are a large number of suspended particles or impurities in the water. The blockage may lead to more frequent cleaning or replacement of the filter layer. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a novel demineralized water pretreatment device, which solves the problem that the particle capture ability of single-layer filtration is limited, and only larger particles can be intercepted, while smaller particles pass through the filter layer.

[0005] To achieve the above object, the utility model provides the following technical solution: A novel demineralized water pretreatment device, comprising a support frame, two tanks, a connecting pipe, and a control valve;

[0006] One of the tanks is installed inside the support frame, the two tanks are connected by a connecting pipe, and the two tanks are located on the same vertical line. The control valve is assembled on the connecting pipe to control the opening and closing of the connecting pipe;

[0007] A flocculant feeding pipe is communicated with the outer peripheral surface of the upper tank to feed the flocculant into the upper tank;

[0008] And a water inlet pipe is communicated with the top of the upper tank to convey the water to be treated into the upper tank and mix it with the flocculant;

[0009] A filtering component is arranged inside the lower tank, and the filtering component includes at least three filter meshes and a drain pipe;

[0010] At least three filter meshes are all installed on the inner peripheral wall of the lower tank, and a certain gap is reserved between adjacent two filter meshes, so that the water body mixed with the flocculant sequentially passes through at least three filter meshes to filter the water body.

[0011] The drain pipe is connected to the bottom of the lower tank for discharging the filtered water body.

[0012] Furthermore, a number of filter holes are evenly distributed inside at least three of the filter nets, and the pore diameters of the filter holes inside at least three of the filter nets decrease from top to bottom.

[0013] Furthermore, the central points of at least three of the filter nets are located on the same vertical line.

[0014] Furthermore, the filter assembly further includes an anti-flushing structure, and the anti-flushing structure includes at least three sewage pipes, at least three valves and a discharge pipe;

[0015] At least three of the sewage pipes are all connected to the lower tank, and the input ends of at least three of the sewage pipes are respectively located above at least three of the filter nets. At least three of the valves are respectively assembled on the outer sides of at least three of the sewage pipes, and the discharge pipe is connected to at least three of the sewage pipes.

[0016] Furthermore, a water injection pipe is detachably connected to the end of the drain pipe away from the tank, and the water injection pipe is connected to the middle water pipe in the outside world for performing anti-flushing treatment on the three filter nets.

[0017] Furthermore, a stirring assembly is installed on the upper tank, and the stirring assembly includes a motor and a stirring shaft;

[0018] The motor is assembled on the upper surface of the upper tank, the stirring shaft is drivingly connected to the output end of the motor, and the stirring shaft is located inside the upper tank, so that when the output end of the motor rotates, it drives the stirring shaft to rotate inside the upper tank to mix the flocculant with the water body.

[0019] Furthermore, the axis of the stirring shaft and the axis of the tank are located on the same vertical line, and the stirring shaft is rotatably connected to the inner top wall of the upper tank through a bearing.

[0020] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0021] 1. For this new desalted water pretreatment device, the flocculated water body inside the upper tank is discharged into the lower tank through the connecting pipe, and sequentially passes through the three filter nets inside the lower tank. By arranging three filter nets with different pore diameters inside the lower tank, a multi-stage filtering effect is achieved on the water body, effectively filtering and intercepting flocs of different volumes in the water body, effectively solving the problem that the particle capture ability of single-layer filtration is limited, and only larger particles can be intercepted, while smaller particles pass through the filter layer.

[0022] 2. The new demineralized water pretreatment device extracts clear water from the outside through a water injection pipe and transports it into the lower tank. When the water level rises above the lowest filter screen, the corresponding valve is opened. At this time, the floccules adhering to the filter screen under the action of backwashing will be discharged from the inside of the sewage pipe. In addition, the cleaning method of the other two filter screens is the same as the above-mentioned cleaning method, which is convenient for cleaning the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of the present utility model;

[0024] Figure 2 is a schematic internal structure diagram of the present utility model;

[0025] Figure 3 is a schematic diagram of the filtering component of the present utility model;

[0026] Figure 4 is a schematic diagram of the stirring component of the present utility model.

[0027] In the figure: 1, support frame; 2, tank; 3, connecting pipe; 4, control valve; 5, flocculant feeding pipe; 6, water inlet pipe; 7, filtering component; 701, filter screen; 702, drain pipe; 703, sewage pipe; 704, valve; 705, discharge pipe; 706, water injection pipe; 8, stirring component; 801, motor; 802, stirring shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0029] Please refer to Figure 1-2 , a new demineralized water pretreatment device in this embodiment is used for multi-stage filtration treatment of sediments in water bodies, and is also convenient for cleaning the sediments adhering to the filter screen 701.

[0030] Specifically, it includes a support frame 1, two tanks 2, a connecting pipe 3 and a control valve 4; one of the tanks 2 is installed inside the support frame 1, the two tanks 2 are connected by the connecting pipe 3, and the two tanks 2 are located on the same vertical line. The control valve 4 is assembled on the connecting pipe 3. A flocculant feeding pipe 5 is communicated with the outer peripheral surface of the upper tank 2, and a water inlet pipe 6 is communicated with the top of the upper tank 2.

[0031] In actual setting, the water body to be filtered is conveyed through the water inlet pipe 6 into the upper tank body 2. At the same time, the flocculant is introduced from the inside of the flocculant feeding pipe 5, so that the flocculant is mixed with the water body inside the tank body 2, thereby promoting the aggregation of tiny suspended particles in the water to form larger flocs, making it easier for sedimentation or filtration.

[0032] Please refer to Figure 3 , in order to separate the flocs from the water body, a filtering assembly 7 is provided inside the lower tank body 2 in this embodiment. The filtering assembly 7 includes at least three filter meshes 701 and a drain pipe 702; at least three filter meshes 701 are all installed on the inner peripheral wall of the lower tank body 2, and there is a certain gap between two adjacent filter meshes 701, so that the water body mixed with the flocculant passes through at least three filter meshes 701 in sequence. The drain pipe 702 is communicated with the bottom of the lower tank body 2 for discharging the filtered water body.

[0033] During actual use, the water body flocculated inside the upper tank body 2 is discharged into the lower tank body 2 through the connecting pipe 3, and passes through the three filter meshes 701 inside the lower tank body 2 in sequence. The water body is fully filtered by the three filter meshes 701, and the filtered water is then discharged through the drain pipe 702.

[0034] Furthermore, in order to achieve the effect of multi-stage filtration, preferably, a number of filter holes are evenly distributed inside at least three filter meshes 701 in this embodiment. The aperture diameters of the filter holes inside at least three filter meshes 701 decrease from top to bottom, and the central points of at least three filter meshes 701 are all located on the same vertical line.

[0035] During actual setting, by arranging three filter meshes 701 with different aperture diameters inside the lower tank body 2, the effect of multi-stage filtration on the water body is achieved, and the flocs with different volume sizes in the water body are effectively filtered and intercepted.

[0036] Specifically, in order to facilitate the cleaning of the filter mesh 701, the filtering assembly 7 in this embodiment further includes a backwashing structure. The backwashing structure includes at least three sewage discharge pipes 703, at least three valves 704 and a discharge pipe 705.

[0037] At least three sewage discharge pipes 703 are all communicated with the lower tank body 2, and the input ends of at least three sewage discharge pipes 703 are respectively located above at least three filter meshes 701. At least three valves 704 are respectively assembled on the outer sides of at least three sewage discharge pipes 703, and the discharge pipe 705 is communicated with at least three sewage discharge pipes 703.

[0038] In actual setting, a water injection pipe 706 is detachably connected to the end of the drain pipe 702 away from the tank body, and the water injection pipe 706 is communicated with the water pipe in the outside world. The clear water in the outside world is extracted through the water injection pipe 706 and conveyed into the lower tank body 2. When the water level overflows the lowermost filter screen 701, the corresponding valve 704 is opened. At this time, the flocs adhered to the filter screen under the action of backwashing will be discharged from the inside of the drain pipe 703. After the filter screen 701 on the lower side is cleaned, the corresponding valve 704 is closed.

[0039] It should be noted that the cleaning methods of the other two filter screens 701 are the same as the above cleaning method. And it should be noted that during the cleaning process, the valve 704 corresponding to the filter screen 701 being cleaned should be in the open state, and the other two valves 704 should be in the closed state.

[0040] Please refer to Figure 4 , in order to increase the full mixing of the flocculant and the water body, a stirring assembly 8 is installed on the upper tank body 2 in this embodiment. The stirring assembly 8 includes a motor 801 and a stirring shaft 802; the motor 801 is assembled on the upper surface of the upper tank body 2, the stirring shaft 802 is drivingly connected to the output end of the motor 801, and the stirring shaft 802 is located inside the upper tank body 2. And the axis of the stirring shaft 802 and the axis of the tank body 2 are on the same vertical line, and the stirring shaft 802 is rotationally connected to the inner top wall of the upper tank body 2 through a bearing.

[0041] During actual use, the output end of the motor 801 rotates to drive the connected stirring shaft 802 to rotate, and the water body and the flocculant inside the tank body 2 are stirred by the stirring shaft 802 to accelerate the mixing efficiency of the water body and the flocculant.

[0042] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel desalted water pretreatment device, characterized in that: It comprises a support frame (1), two tank bodies (2), a connecting pipe (3) and a control valve (4); One of the tank bodies (2) is installed inside the support frame (1), the two tank bodies (2) are connected by a connecting pipe (3), and the two tank bodies (2) are located on the same vertical line, and the control valve (4) is installed on the connecting pipe (3) to control the opening and closing of the connecting pipe (3); A flocculant delivery pipe (5) is connected to the outer peripheral surface of the upper tank body (2) for delivering the flocculant into the interior of the upper tank body (2); A water inlet pipe (6) is connected to the top of the upper tank body (2) to transport the water to be treated to the interior of the upper tank body (2) and mix it with the flocculant; A filter assembly (7) is arranged inside the tank body (2) at the lower side, and the filter assembly (7) comprises at least three filter screens (701) and a drainage pipe (702); At least three of the filter screens (701) are installed on the inner peripheral wall of the lower tank body (2), and a certain gap is reserved between two adjacent filter screens (701), so that the water mixed with the flocculant passes through the at least three filter screens (701) in sequence to filter the water; The drainage pipe (702) is connected to the bottom of the lower tank (2) to discharge the filtered water; The filter assembly (7) further comprises a backwashing structure, wherein the backwashing structure comprises at least three sewage pipes (703), at least three valves (704) and a discharge pipe (705); At least three of the sewage pipes (703) are connected to the lower tank body (2), and the input ends of the at least three sewage pipes (703) are respectively located above the at least three filter screens (701), at least three valves (704) are respectively installed on the outside of the at least three sewage pipes (703), and the discharge pipe (705) is connected to the at least three sewage pipes (703); A stirring assembly (8) is installed on the upper tank body (2), and the stirring assembly (8) includes a motor (801) and a stirring shaft (802); The motor (801) is mounted on the upper surface of the upper tank body (2), the stirring shaft (802) is drivingly connected to the output end of the motor (801), and the stirring shaft (802) is located inside the upper tank body (2), so that when the output end of the motor (801) rotates, the stirring shaft (802) is driven to rotate inside the upper tank body (2) to mix the flocculant with the water.

2. A novel desalted water pretreatment device according to claim 1, characterized in that: A plurality of filter holes are evenly distributed inside at least three of the filter nets (701), and the apertures of the filter holes inside at least three of the filter nets (701) decrease from top to bottom.

3. A novel desalted water pretreatment device according to claim 1, characterized in that: The center points of at least three of the filter screens (701) are located on the same vertical line.

4. A novel desalted water pretreatment device according to claim 1, characterized in that: A water injection pipe (706) is detachably connected to one end of the drainage pipe (702) away from the tank body, and the water injection pipe (706) is connected to an external water pipe for backwashing the three filter screens (701).

5. A novel desalted water pretreatment device according to claim 1, characterized in that: The axis of the stirring shaft (802) and the axis of the tank body (2) are located on the same vertical line, and the stirring shaft (802) is rotatably connected to the inner top wall of the upper tank body (2) via a bearing.

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