Precise water filter for underground coal mine

Abstract

The utility model relates to the field of filters, in particular to a precise water filter for an underground coal mine, which comprises a filter tank a and a filter tank b, wherein fiber particle filter materials are arranged in the filter tank a and the filter tank b; the water inlet distributor is communicated with the water inlet filter; a three-way port of the first three-way valve is respectively communicated with the filtering tank a, the water inlet filter and the main drain outlet; a three-way port of the second three-way valve is respectively communicated with the filtering tank b, the water inlet filter and the main drain outlet; a three-way port of the third three-way valve is respectively communicated with the filtering tank a, the direct drinking water port and the main drain outlet; a three-way port of the fourth three-way valve is respectively communicated with the filtering tank b, the direct drinking water port and the main drain outlet; two ports of the first backwashing valve are respectively communicated with the filtering tank a and the water inlet filter; two ports of the second backwashing valve are respectively communicated with the bottom of the filtering tank b and the water inlet filter. According to the utility model, the fiber particle filter material is adopted, automatic cleaning can be completed in combination with backwashing, the blocking phenomenon is avoided, and the filter screen does not need to be cleaned frequently.

Description

Technical Field

[0001] The utility model relates to the field of filters, in particular to a precision water filter for underground coal mines. Background Art

[0002] A water filter is a device used to remove impurities and pollutants in water. It can effectively purify tap water, groundwater or other water sources, enabling people to obtain purer and safer water for use.

[0003] The water filter for coal mines is a water treatment device specifically designed for coal mine sites and working environments. The existing water filters for coal mines adopt a filter screen structure. After being used for a long time, the filter screen is prone to clogging, affecting the water filtration effect, and the clogged filter screen is also inconvenient to clean, making it inconvenient to use. Summary of the Utility Model

[0004] The purpose of the utility model is to address the problem that the filter screen type water filter in the background art is prone to clogging and inconvenient to clean, and to propose a precision water filter for underground coal mines.

[0005] The technical solution of the utility model: A precision water filter for underground coal mines includes a trolley, and trolley traction heads are arranged at both ends of the trolley; it also includes:

[0006] Filter tanks a and b with fiber particle filter media inside, and both filter tanks a and b are arranged on the trolley;

[0007] An inlet water distributor, which is arranged on the trolley and is connected to an inlet water filter arranged on the trolley;

[0008] A first three-way valve, the three-way ports of which are respectively connected to the top of filter tank a, the inlet water filter, and the total sewage discharge port, and the total sewage discharge port is arranged on the trolley;

[0009] A second three-way valve, the three-way ports of which are respectively connected to the top of filter tank b, the inlet water filter, and the total sewage discharge port;

[0010] A third three-way valve, the three-way ports of which are respectively connected to the bottom of filter tank a, the direct drinking water port, and the total sewage discharge port, and the direct drinking water port is arranged on the trolley;

[0011] A fourth three-way valve, the three-way ports of which are respectively connected to the bottom of filter tank b, the direct drinking water port, and the total sewage discharge port;

[0012] A first backwash valve, which is a two-way valve and the two-way ports are respectively connected to the bottom of filter tank a and the inlet water filter;

[0013] And a second backwash valve, which is a two-way valve and the two-way ports are respectively connected to the bottom of filter tank b and the inlet water filter.

[0014] Preferably, an inlet distributor driving mechanism and an inlet are provided on the inlet distributor. A sewage pipe is provided on the inlet distributor, and an inlet distributor sewage ball valve is provided on the sewage pipe. The sewage pipe is communicated with the total sewage outlet.

[0015] Preferably, it further includes a total inlet pressure gauge for detecting the water pressure entering the inlet distributor, a tank outlet pressure gauge for detecting the water pressure entering the direct drinking water outlet, and a tank inlet pressure gauge for detecting the water pressure before entering filter tank A and filter tank B.

[0016] Preferably, a direct drinking water RO membrane, a direct drinking water pressure stabilizing valve, and a direct drinking water control valve are provided on the water pipe of the direct drinking water outlet.

[0017] Preferably, hydraulic motors are provided in both filter tank A and filter tank B, and a motor throttle valve A and a motor throttle valve B are respectively provided on the pipes led out from the two hydraulic motors.

[0018] Preferably, a driving handwheel for driving the inlet distributor is provided on the trolley, and a handwheel for brushing the inlet filter and a backwashing handle for the inlet filter are provided on the inlet filter.

[0019] Compared with the prior art, the utility model has the following beneficial technical effects: Using fiber particle filter media improves the filtering effect. Through the setting of backwashing, automatic cleaning can be completed, no clogging phenomenon will occur, and the filter screen does not need to be frequently cleaned, which is convenient to use. It can be used as the total inlet filtration of the fully-mechanized mining face, providing pure water sources for water-using equipment such as fully-mechanized mining equipment systems, reducing the use and maintenance costs of downstream water-using equipment, reducing fluid system failures by more than 50%, and ensuring a relatively high intact rate of equipment operation. The whole device is directly placed on the track, the inlet is connected to the underground water supply port, and the filtered purified water is connected from the outlet to the water distribution pipe for the working face, supplying water to equipment such as emulsion pump stations, supports, spray cooling, scraper conveyors, and TTT coolers. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of an embodiment of the utility model;

[0021] Figure 2 It is Figure 1 the rear view of;

[0022] Figure 3 It is the working principle diagram of the utility model.

[0023] Reference numerals: 1, filter tank a; 2, filter tank b; 3, manual exhaust valve a; 4, first three-way valve; 5, second three-way valve; 6, total sewage outlet; 7, third three-way valve; 8, fourth three-way valve; 9, first backwash valve; 10, second backwash valve; 11, total inlet pressure gauge; 12, total outlet pressure gauge; 13, tank inlet pressure gauge; 14, tank outlet pressure gauge; 15, upper manhole cover; 16, lower manhole cover; 17, lifting ring; 18, direct drinking water RO membrane; 19, tank drain valve; 20, direct drinking water outlet; 21, direct drinking water pressure stabilizing valve; 22, direct drinking water control valve; 23, motor throttle valve a; 24, motor throttle valve b; 25, inlet distributor; 26, inlet distributor drive mechanism; 27, water inlet; 28, inlet distributor sewage ball valve; 29, manual exhaust valve b; 30, drain valve; 31, outlet security filter; 32, direct drinking water sewage valve; 33, manual exhaust valve c; 34, trolley; 35, trolley towing head; 36, inlet filter; 37, drive handwheel; 38, inlet filter brush washing handwheel; 39, inlet filter backwash handle. Detailed implementation mode

[0024] Embodiment 1

[0025] As Figures 1 - 2 shown, a precision water filter for use in coal mines proposed by the present utility model includes a trolley 34, trolley towing heads 35 are arranged at both ends of the trolley 34, the trolley towing heads 35 are connected to adjacent mine cars and travel together with the underground equipment train; it further includes:

[0026] Filter tank a 1 and filter tank b 2 with fibrous granular filter media inside, both filter tank a 1 and filter tank b 2 are arranged on the trolley 34, manual exhaust valve a 3 and lifting rings 17 are arranged at the tops of filter tank a 1 and filter tank b 2, upper manhole covers 15 and lower manhole covers 16 are arranged on the peripheral walls of filter tank a 1 and filter tank b 2, the upper manhole covers 15 and the lower manhole covers 16 are respectively located at the upper and lower ends, tank drain valves 19 are arranged at the bottoms of filter tank a 1 and filter tank b 2, hydraulic motors are arranged inside filter tank a 1 and filter tank b 2, motor throttle valve a 23 and motor throttle valve b 24 are respectively arranged on the leading pipes of the two hydraulic motors, and the vertical cross-sections of filter tank a 1 and filter tank b 2 are in a gradient distribution with the upper part larger and the lower part smaller;

[0027] Inlet distributor 25, which is arranged on the trolley 34, the inlet distributor 25 is communicated with the inlet filter 36 arranged on the trolley 34, manual exhaust valve b 29 is arranged on the inlet filter 36, inlet distributor drive mechanism 26 and water inlet 27 are arranged on the inlet distributor 25, a sewage pipe is arranged on the inlet distributor 25, an inlet distributor sewage ball valve 28 is arranged on the sewage pipe, and the sewage pipe is communicated with the total sewage outlet 6;

[0028] The first three-way valve 4, with its three-way ports respectively connected to the top of the filtration tank a1, the water inlet filter 36, and the main sewage outlet 6. The main sewage outlet 6 is arranged on the trolley 34, and a drain valve 30 is arranged on the main sewage outlet 6.

[0029] The second three-way valve 5, with its three-way ports respectively connected to the top of the filtration tank b2, the water inlet filter 36, and the main sewage outlet 6.

[0030] The third three-way valve 7, with its three-way ports respectively connected to the bottom of the filtration tank a1, the direct drinking water outlet 20, and the main sewage outlet 6. The direct drinking water outlet 20 is arranged on the trolley 34, and a direct drinking water sewage outlet is also arranged on the direct drinking water outlet 20. A direct drinking water sewage valve 32 is arranged on the water pipe of the direct drinking water sewage outlet, and a direct drinking water RO membrane 18, a direct drinking water pressure stabilizing valve 21, and a direct drinking water control valve 22 are arranged on the water pipe of the direct drinking water outlet 20.

[0031] The fourth three-way valve 8, with its three-way ports respectively connected to the bottom of the filtration tank b2, the direct drinking water outlet 20, and the main sewage outlet 6.

[0032] The first backwash valve 9, which is a two-way valve and its two-way ports are respectively connected to the bottom of the filtration tank a1 and the water inlet filter 36.

[0033] And the second backwash valve 10, which is a two-way valve and its two-way ports are respectively connected to the bottom of the filtration tank b2 and the water inlet filter 36.

[0034] Embodiment 2

[0035] As Figures 1 - 2 shown, a precision water filter for use in coal mines proposed by the present utility model, compared with Embodiment 1, this embodiment further adds a pressure detection mechanism.

[0036] It includes a total inlet water pressure gauge 11 for detecting the water pressure entering the water inlet distributor 25, a tank outlet water pressure gauge 14 for detecting the water pressure entering the direct drinking water outlet 20, and a tank inlet water pressure gauge 13 for detecting the water pressure before entering the filtration tank a1 and the filtration tank b2; it also includes a total outlet water pressure gauge 12 for detecting the total outlet water pressure of the third three-way valve 7 and the fourth three-way valve 8. A water outlet security filter 31 is arranged in front of the total outlet water pressure gauge 12, a manual exhaust valve c33 is arranged on the water outlet security filter 31, and the filtration accuracy of the water outlet security filter 31 is eighty microns.

[0037] Embodiment 3

[0038] As Figures 1 - 2 shown, a precision water filter for use in coal mines proposed by the present utility model, compared with Embodiment 1 or Embodiment 2, this embodiment further includes.

[0039] A driving handwheel 37 for driving the water inlet distributor 25 is provided on the trolley 34, and a water inlet filter brush washing handwheel 38 and a water inlet filter backwashing handle 39 are provided on the water inlet filter 36; the water inlet distributor 25 is a prior art and is of an automatic reset type, mainly composed of a housing, a valve stem, a valve core, a driving mechanism, a dirt collector, and a sewage discharge ball valve QF1. Its function is to change the direction of the incoming water entering the water inlet filter 36 and complete the backwashing of the water inlet filter; the water inlet filter 36 is mainly composed of a housing, a stainless steel wedge-shaped filter screen, a brushing mechanism, a speed reducer, and a sewage discharge ball valve QF2; the filtration precision of the stainless steel wedge-shaped filter screen is two hundred microns, preventing larger sundries from entering the filter tanks a1 and b2.

[0040] Embodiment 4

[0041] As Figure 3 shown, a precision water filter for use in coal mines underground proposed by the present utility model is introduced in detail in this embodiment in terms of its working mechanism.

[0042] 1. Normal filtration: The first backwashing valve 9 and the second backwashing valve 10 must be closed. Incoming water → water inlet distributor 25 to B → water inlet filter 36 → C1 port of the first three-way valve 4 and C2 port of the second three-way valve 5 → A1 port of the first three-way valve 4 and A2 port of the second three-way valve 5 → fine filtration in filter tanks a1 and b2 → B3 port of the third three-way valve 7 and B4 port of the fourth three-way valve 8 → A3 port of the third three-way valve 7 and A4 port of the fourth three-way valve 8 → water outlet.

[0043] 2. Backwashing of filter tank a1: Incoming water → water inlet distributor 25 to B → water inlet filter 36 → B5 port of the first backwashing valve 9 → A5 port of the first backwashing valve 9 → backwashing motor of filter tank a1 → filter tank a1 → A1 port of the first three-way valve 4 → B1 port of the first three-way valve 4 → visually observe that the water at the total sewage discharge port 6 becomes clear. After about 5 minutes, the third three-way valve 7 is in the D3 position and the four ports are not connected → backwashing ends.

[0044] 3. Prefiltration of filter tank a1: The first backwashing valve 9 and the second backwashing valve 10 must be closed. Incoming water → water inlet distributor 25 to filter tank b2 → water inlet filter 36 → C1 port of the first three-way valve 4 and C2 port of the second three-way valve 5 → A1 port of the first three-way valve 4 and A2 port of the second three-way valve 5 → fine filtration in filter tanks a1 and b2 → B3 port of the third three-way valve 7 and B4 port of the fourth three-way valve 8 → C3 port of the third three-way valve 7 and A4 port of the fourth three-way valve 8 → water outlet, and at the same time, the total sewage discharge port 6 discharges water. After about 1 minute, the prefiltration of filter tank a1 ends → rotate the third three-way valve 7 to make B3 and A3 communicate → normal filtration.

[0045] 4. Backwash Filter Tank b2: Incoming water → Inlet Distributor 25 to B → Inlet Filter 36 → Port B6 of the Second Backwash Valve 10 → Port A6 of the Second Backwash Valve 10 → Backwash Motor of Filter Tank b2 → Filter Tank b2 → Port A2 of the Second Three-way Valve 5 → Port B2 of the Second Three-way Valve 5 → Visually check that the water in the Total Drain Port 6 becomes clear. After about 5 minutes, the Fourth Three-way Valve 8 is in the D4 position and the four ports are blocked → Backwash ends.

[0046] 5. Prefiltration Filter Tank b2: The First Backwash Valve 9 and the Second Backwash Valve 10 must be closed. Incoming water → Inlet Distributor 25 to B → Inlet Filter 36 → Port C1 of the First Three-way Valve 4 and Port C2 of the Second Three-way Valve 5 → Port A1 of the First Three-way Valve 4 and Port A2 of the Second Three-way Valve 5 → Fine filtration of Filter Tank a1 and Filter Tank b2 → Port B3 of the Third Three-way Valve 7 and Port B4 of the Fourth Three-way Valve 8 → Port A3 of the Third Three-way Valve 7 and Port A4 of the Fourth Three-way Valve 8 → Outlet water. At the same time, water drains from the Total Drain Port 6. After about 1 minute, the prefiltration of Filter Tank b2 ends → Rotate the Fourth Three-way Valve 8 to make B4 and A4 communicate → Normal filtration.

[0047] 6. Clean Inlet Filter 36: Move the Inlet Distributor 25 to make P and A communicate → Rotate the Ball Valve QF2 → Rotate the Backwash Handwheel of the Inlet Filter, i.e., the Driving Handwheel 37, for fifteen turns. Use it when the cleaning is not thorough → Close the Ball Valve QF2 → End.

[0048] 7. Backwash Inlet Distributor 25: Incoming water → Inlet Distributor 25 → Inlet Filter 36 → Collector of Inlet Distributor 25 → Rotate the Ball Valve QF1 → Drain → Close the Ball Valve QF2 → End.

[0049] 8. Drinking Water: Fine-filtered water from Filter Tank a1 and Filter Tank b2 → DN20 Globe Valve → DN20 Pressure Stabilizing Valve → Drinking Water RO Membrane 18 → Drinking Water Port 20.

[0050] In summary, the present utility model is a special filter with fiber granular filter media as the technical core. The fiber granular filter media is a new type of filter material, which has both the advantages of high filtration accuracy and large dirt interception amount of fiber filter media, and the advantages of high backwashing cleanliness and low water consumption of granular filter media. The porosity distribution of the filter bed formed by this filter media is close to the structure of the ideal filter media. The porosity distribution is uniform in the cross-section (horizontal) of the filter bed, ensuring the consistency of the water flow channel size during filtration. The direct effect is that the dirt interception amount is uniform and the phenomenon of water flow short circuit is avoided. In the longitudinal section of the filter bed, the diameter distribution of the void channels gradually decreases from top to bottom, showing a gradient distribution with a large upper part and a small lower part along the longitudinal section of the filter bed. This structure is very conducive to the effective separation of solid suspended matters in water. That is, the particles desorbed from the upper part of the filter bed are easily captured and intercepted in the filter bed with narrow channels in the lower part. Due to the uniqueness of the filter bed formed by the fiber granular filter media, this precision water filter can achieve high-speed and high-precision filtration to meet the use requirements of high water quality and large water volume. During filtration, the water flow pressure difference compacts the fiber bundles. During backwashing, due to the specific gravity difference between the fiber granules and the fiber bundles, the fiber bundles disperse and swing with the backwashing water flow, generating a strong drag force. The mutual collision between the filter media also intensifies the force exerted on the fibers in water. The irregular shape of the filter media causes the filter media to rotate under the action of the backwashing water flow, strengthening the force exerted on the filter media during backwashing. The combined action of the above several forces makes the dirt particles attached to the fiber surface easily fall off, thereby improving the backwashing cleanliness of the filter media. The backwashing hydraulic motor realizes the flexible backwashing of the filter media, without damaging the filter material, and ensures the reliable operation of precision filtration. This equipment can be used as the total inlet filtration for the fully mechanized mining face, providing pure water sources for water-using equipment such as fully mechanized mining equipment systems, reducing the use and maintenance costs of downstream water-using equipment, reducing the fluid system failures by more than 50%, and ensuring a relatively high intact rate of equipment operation. The whole equipment is directly placed on the track, the water inlet is connected to the underground water supply port, and the filtered clean water is connected to the water distribution pipe for the working face from the water outlet, supplying water to equipment such as emulsion pump stations, supports, spray cooling, scraper conveyors, and TTT coolers. Generally speaking, the present utility model uses fiber granular filter media, improves the filtration effect, can complete automatic cleaning through the setting of backwashing, will not cause blockage, and does not require frequent cleaning of the filter screen, which is convenient to use.

[0051] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited thereto. Various changes can be made without departing from the spirit of the present utility model within the scope of knowledge possessed by those skilled in the art.

Claims

1. A precision water filter for use in underground coal mines, comprising a trolley (34), and trolley towing heads (35) are arranged at both ends of the trolley (34); characterized in that, It also includes: Filter tanks a (1) and b (2) with fibrous granular filter media inside, and both filter tanks a (1) and b (2) are arranged on the trolley (34); An inlet water distributor (25), which is arranged on the trolley (34), and the inlet water distributor (25) is communicated with an inlet water filter (36) arranged on the trolley (34); A first three-way valve (4), the three-way ports of which are respectively communicated with the top of the filter tank a (1), the inlet water filter (36), and the total sewage discharge port (6), and the total sewage discharge port (6) is arranged on the trolley (34); A second three-way valve (5), the three-way ports of which are respectively communicated with the top of the filter tank b (2), the inlet water filter (36), and the total sewage discharge port (6); A third three-way valve (7), the three-way ports of which are respectively communicated with the bottom of the filter tank a (1), the direct drinking water port (20), and the total sewage discharge port (6), and the direct drinking water port (20) is arranged on the trolley (34); A fourth three-way valve (8), the three-way ports of which are respectively communicated with the bottom of the filter tank b (2), the direct drinking water port (20), and the total sewage discharge port (6); A first backwashing valve (9), which is a two-way valve and the two-way ports are respectively communicated with the bottom of the filter tank a (1) and the inlet water filter (36); And a second backwashing valve (10), which is a two-way valve and the two-way ports are respectively communicated with the bottom of the filter tank b (2) and the inlet water filter (36).

2. The precision water filter for use in underground coal mines according to claim 1, wherein An inlet water distributor driving mechanism (26) and an inlet (27) are arranged on the inlet water distributor (25). A sewage discharge pipe is arranged on the inlet water distributor (25), and an inlet water distributor sewage discharge ball valve (28) is arranged on the sewage discharge pipe, and the sewage discharge pipe is communicated with the total sewage discharge port (6).

3. The precision water filter for use in coal mines according to claim 1, characterized in that, It also includes a total inlet water pressure gauge (11) for detecting the water pressure entering the inlet water distributor (25), a tank outlet water pressure gauge (14) for detecting the water pressure entering the direct drinking water port (20), and a tank inlet water pressure gauge (13) for detecting the water pressure before entering the filter tanks a (1) and b (2).

4. The precision water filter for underground coal mines according to claim 1, characterized in that, A direct drinking water RO membrane (18), a direct drinking water pressure stabilizing valve (21), and a direct drinking water control valve (22) are arranged on the water pipe of the direct drinking water port (20).

5. The precision water filter for use in underground coal mines according to claim 1, characterized in that, Hydraulic motors are arranged inside both the filter tank a (1) and the filter tank b (2), and a motor throttle valve a (23) and a motor throttle valve b (24) are respectively arranged on the lead-out pipes of the two hydraulic motors.

6. The precision water filter for use in underground coal mines according to claim 1, characterized in that, A driving handwheel (37) for driving the inlet water distributor (25) is arranged on the trolley (34), and an inlet water filter scrubbing handwheel (38) and an inlet water filter backwashing handle (39) are arranged on the inlet water filter (36).

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