Recharge filtering device

Abstract

The utility model discloses a recharge filtering device which comprises a main water outlet pipe, a coarse filtering tank, a fine filtering tank and a degassing tank, a first filter element is arranged in the coarse filtering tank; a first water inlet is formed in the lower end of the coarse filtering tank, and a first water outlet is formed in the upper end; the main water outlet pipe is communicated with the first water inlet; a backwashing water inlet is formed in the top end of the coarse filtering tank, and a drain outlet is formed in the bottom end; a second filter element is arranged in the fine filtering tank; the upper end of the fine filtering tank is provided with a second water inlet, and the lower end is provided with a second water outlet; the first water outlet is communicated with the second water inlet; and the water inlet end of the degassing tank is communicated with the second water outlet. The recharge filtering device disclosed by the utility model is good in filtering effect, and the filter element is convenient to clean.

Description

Technical Field

[0001] The utility model relates to the technical field of geothermal reinjection, and more specifically to a reinjection filtration device. Background Art

[0002] Geothermal reinjection is a measure to avoid thermal pollution and chemical pollution caused by direct discharge of geothermal wastewater, and plays an important role in maintaining the reservoir pressure and ensuring the exploitation technical conditions of geothermal fields. The geothermal tail water reinjection filtration system is the core system to ensure the normal operation of reinjection. Geothermal reinjection is a technical measure to reinject water into the ground and is a powerful measure to realize the sustainable development of geothermal resources.

[0003] Before the geothermal water is reinjected into the reservoir, it should be filtered. During the use of the existing geothermal reinjection water filtration device, after the filter plate intercepts a large amount of impurities, it needs to be taken out for cleaning or replacement. When disassembling the filter plate, it is necessary to stop the machine for disassembly, and the filter plate is relatively easy to be blocked, so it needs to be disassembled frequently, thus reducing the work efficiency; moreover, the existing reinjection filtration is mostly single filtration, resulting in a low filtration accuracy, which is not conducive to the technical use of reinjected water.

[0004] Therefore, it is an urgent problem for those skilled in the art to develop a reinjection filtration device with good filtration effect and convenient cleaning of the filter element. Content of the Utility Model

[0005] In view of this, the utility model provides a reinjection filtration device with good filtration effect and convenient cleaning of the filter element.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A reinjection filtration device, comprising:

[0008] A main outlet pipe,

[0009] A coarse filtration tank, wherein a first filter element is arranged in the coarse filtration tank; a first water inlet is arranged at the lower end of the coarse filtration tank, and a first water outlet is arranged at the upper end; the main outlet pipe is communicated with the first water inlet; an anti-flushing water inlet is arranged at the top end of the coarse filtration tank, and a sewage outlet is arranged at the bottom end;

[0010] A fine filtration tank, wherein a second filter element is arranged in the fine filtration tank; a second water inlet is arranged at the upper end of the fine filtration tank, and a second water outlet is arranged at the lower end; the first water outlet is communicated with the second water inlet;

[0011] A degassing tank, the water inlet end of which is communicated with the second water outlet.

[0012] The beneficial effects of adopting the above technical solution are that in the present utility model, water is filtered through the coarse filter tank and the fine filter tank, so that the filtering effect is better, and by backwashing the coarse filter tank, the impurities on the surface of the first filter element can be cleaned, and the first filter element can restore its filtering effect.

[0013] Preferably, a pressure gauge is provided at the first water inlet.

[0014] Preferably, the filtering device further includes a backwashing control cabinet, and the backwashing control cabinet is connected to the pressure gauge. When the pressure value at the first water inlet or the service time of the first filter element reaches the set value, the backwashing control cabinet will control the backwashing port to wash the first filter element.

[0015] Preferably, exhaust ports are provided at the tops of both the coarse filter tank and the fine filter tank.

[0016] Preferably, the first filter element is made of a stainless steel wedge-shaped filter screen; the second filter element is made of a pp material large-flux folded filter element.

[0017] Preferably, a first fixing plate is provided at the top of the first filter element, the first fixing plate is connected to the coarse filter tank, and a first filtering port is provided at the position corresponding to the first filter element on the first fixing plate.

[0018] Preferably, a second fixing plate is provided at the bottom of the second filter element, the second fixing plate is connected to the fine filter tank, and a second filtering port is provided at the position corresponding to the second filter element on the second fixing plate.

[0019] Preferably, the fine filter tank is provided with an upper drain port and a lower drain port. The upper drain port is located above the second fixing plate; the lower drain port is located at the bottom end of the fine filter tank. The upper drain port removes the impurities filtered by the second filter element, and the lower drain port removes the impurities at the bottom of the fine filter tank.

[0020] Preferably, a plurality of the coarse filter tanks are provided and are all fixed on the first bottom plate; a plurality of the fine filter tanks are provided and are all fixed on the second bottom plate. By fixing a plurality of coarse filter tanks and a plurality of fine filter tanks through the first bottom plate and the second bottom plate respectively, the overall structure is made more stable.

[0021] Preferably, a plurality of the coarse filter tanks are connected in parallel, and a plurality of the first water outlets are all communicated with the water inlet end of the total coarse filter pipe; a plurality of the fine filter tanks are connected in parallel, and a plurality of the second water inlets are all communicated with the water outlet end of the total coarse filter pipe.

[0022] It can be seen from the above technical solution that compared with the prior art, the present utility model discloses a recharge filtration device, and its beneficial effects are as follows:

[0023] (1) In this utility model, water is filtered through a coarse filter tank and a fine filter tank, making the filtering effect better.

[0024] (2) By performing backwashing on the coarse filter tank, impurities on the surface of the first filter element can be cleaned, enabling the first filter element to restore its filtering effect.

[0025] (3) Multiple coarse filter tanks and fine filter tanks are arranged in parallel, which can improve the filtering efficiency. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0027] Figure 1 The drawing is a schematic structural diagram of the coarse filter tank provided by the present utility model;

[0028] Figure 2 The drawing is a schematic structural diagram of the fine filter tank provided by the present utility model;

[0029] Figure 3 The drawing is a top view of the connection between the coarse filter tank and the fine filter tank provided by the present utility model.

[0030] Among them, in the figure,

[0031] 1 - Total outlet pipe;

[0032] 2 - Coarse filter tank;

[0033] 21 - First filter element; 22 - First water inlet; 23 - First water outlet; 24 - Backwashing water inlet; 25 - Drain port; 26 - Pressure gauge; 27 - First fixing plate;

[0034] 3 - Fine filter tank;

[0035] 31 - Second filter element; 32 - Second water inlet; 33 - Second water outlet; 34 - Second fixing plate; 35 - Upper drain port; 36 - Lower drain port;

[0036] 4 - Backwashing control cabinet; 5 - Exhaust port; 6 - First bottom plate; 7 - Second bottom plate; 8 - Total coarse filter pipe. Detailed Embodiment

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with 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.

[0038] An embodiment of the present utility model discloses a recharge and filtration device, including:

[0039] A main outlet pipe 1,

[0040] A coarse filtration tank 2, in which a first filter element 21 is arranged; a first water inlet 22 is arranged at the lower end of the coarse filtration tank 2, and a first water outlet 23 is arranged at the upper end; the main outlet pipe 1 is communicated with the first water inlet 22; a backwash water inlet 24 is arranged at the top of the coarse filtration tank 2, and a sewage outlet 25 is arranged at the bottom;

[0041] A fine filtration tank 3, in which a second filter element 31 is arranged; a second water inlet 32 is arranged at the upper end of the fine filtration tank 3, and a second water outlet 33 is arranged at the lower end; the first water outlet 23 is communicated with the second water inlet 32;

[0042] A degassing tank, the water inlet end of which is communicated with the second water outlet 33. The degassing tank performs degassing treatment on the filtered water.

[0043] To further optimize the above technical solution, a pressure gauge 26 is arranged at the first water inlet 22.

[0044] To further optimize the above technical solution, the tops of the coarse filtration tank 2 and the fine filtration tank 3 are provided with top covers, which can be opened to facilitate cleaning and maintenance of the interiors of the coarse filtration tank 2 and the fine filtration tank 3.

[0045] To further optimize the above technical solution, the filtration device further includes a backwash control cabinet 4, which is connected to the pressure gauge 26. When either the time or the pressure reaches the set value, the backwash control cabinet will control the valve at the backwash water inlet 24 to open for backwashing operation.

[0046] To further optimize the above technical solution, exhaust ports 5 are arranged at the tops of both the coarse filtration tank 2 and the fine filtration tank 3.

[0047] To further optimize the above technical solution, the first filter element 21 is selected as a stainless steel wedge-shaped filter screen; the second filter element 31 is selected as a pp material large-flux folded filter element.

[0048] To further optimize the above technical solution, a first fixing plate 27 is provided at the top of the first filter element 21. The first fixing plate 27 is connected to the coarse filtration tank 2, and a first filtration port is provided at the position corresponding to the first filter element 21 on the first fixing plate 27.

[0049] To further optimize the above technical solution, a second fixing plate 34 is provided at the bottom of the second filter element 31. The second fixing plate 34 is connected to the fine filtration tank 3, and a second filtration port is provided at the position corresponding to the second filter element 31 on the second fixing plate 34.

[0050] To further optimize the above technical solution, the fine filtration tank 3 is provided with an upper drain port 35 and a lower drain port 36. The upper drain port 35 is located above the second fixing plate 34; the lower drain port 36 is located at the bottom end of the fine filtration tank 3. The provision of the upper drain port 35 and the lower drain port 36 facilitates the cleaning of impurities in the fine filtration tank 3.

[0051] To further optimize the above technical solution, a plurality of coarse filtration tanks 2 are provided and are all fixed on the first bottom plate 6; a plurality of fine filtration tanks 3 are provided and are all fixed on the second bottom plate 7.

[0052] To further optimize the above technical solution, a plurality of coarse filtration tanks 2 are connected in parallel, and a plurality of first water outlets 23 are all communicated with the water inlet end of the total coarse filtration pipe 8; a plurality of fine filtration tanks 3 are connected in parallel, and a plurality of second water inlets 32 are all communicated with the water outlet end of the total coarse filtration pipe 8.

[0053] In this specification, each embodiment is described in a progressive manner. The key points of each embodiment are the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple. For the relevant parts, refer to the description in the method part.

[0054] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A refill filtration device, characterized in that: include: Main water outlet pipe (1), A coarse filter tank (2), wherein a first filter element (21) is arranged in the coarse filter tank (2); a first water inlet (22) is arranged at the lower end of the coarse filter tank (2), and a first water outlet (23) is arranged at the upper end; the main water outlet pipe (1) is connected to the first water inlet (22); a backwash water inlet (24) is arranged at the top end of the coarse filter tank (2), and a sewage outlet (25) is arranged at the bottom end; A fine filter tank (3), wherein a second filter element (31) is arranged in the fine filter tank (3); a second water inlet (32) is arranged at the upper end of the fine filter tank (3), and a second water outlet (33) is arranged at the lower end; the first water outlet (23) is connected to the second water inlet (32); A degassing tank, wherein the water inlet end of the degassing tank is connected to the second water outlet (33).

2. A re-injection filtration device according to claim 1, characterized in that: A pressure gauge (26) is provided at the first water inlet (22).

3. A re-injection filtration device according to claim 2, characterized in that: The filtering device also includes a backwashing control cabinet (4), and the backwashing control cabinet (4) is connected to the pressure gauge (26).

4. A re-injection filtration device according to claim 1, characterized in that: The tops of the coarse filtration tank (2) and the fine filtration tank (3) are both provided with exhaust ports (5).

5. A re-injection filtration device according to claim 1, characterized in that: The first filter element (21) is made of a stainless steel wedge-shaped filter; the second filter element (31) is made of a PP material high-flux pleated filter element.

6. A re-injection filtration device according to claim 1, characterized in that: A first fixing plate (27) is arranged on the top of the first filter element (21), the first fixing plate (27) is connected to the coarse filter tank (2), and a first filter port is arranged at a position corresponding to the first fixing plate (27) and the first filter element (21).

7. A re-injection filtration device according to claim 6, characterized in that: A second fixing plate (34) is provided at the bottom of the second filter element (31), the second fixing plate (34) is connected to the fine filter tank (3), and a second filter port is provided at a position corresponding to the second fixing plate (34) and the second filter element (31).

8. A re-injection filtration device according to claim 7, characterized in that: The fine filter tank (3) is provided with an upper drain port (35) and a lower drain port (36); the upper drain port (35) is located above the second fixing plate (34); and the lower drain port (36) is located at the bottom end of the fine filter tank (3).

9. A re-injection filtration device according to claim 1, characterized in that: The coarse filtering tank (2) is provided in plurality and all are fixed on the first bottom plate (6); the fine filtering tank (3) is provided in plurality and all are fixed on the second bottom plate (7).

10. A re-injection filtration device according to claim 9, characterized in that: A plurality of the coarse filter tanks (2) are connected in parallel, and a plurality of the first water outlets (23) are all connected to the water inlet end of the main coarse filter pipe (8); a plurality of the fine filter tanks (3) are connected in parallel, and a plurality of the second water inlets (32) are all connected to the water outlet end of the main coarse filter pipe (8).

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