Rotary filter cloth filter

Abstract

The utility model relates to the technical field of water purification treatment, in particular to a rotary filter cloth filter, which is characterized in that a raw water cavity and a clear water cavity are respectively arranged on two sides of an inner cavity of a box body, a muddy water collecting cavity is arranged above the clear water cavity, and a water inlet and a clear water outlet are respectively and correspondingly arranged on the side wall of the box body corresponding to the raw water cavity and the clear water cavity; the bearing seats are fixed to the front portion and the rear portion above the muddy water collecting cavity respectively, a driving roller is rotationally installed between the bearing seats, a driven roller is rotationally installed between the bottom ends of the front wall and the rear wall, located on the inner side of the clear water cavity, of the box body, and the filter cloth is of a closed-loop structure sequentially bypassing the driving roller and the driven roller. The bottom end of the scraper is fixed to the top end of the inner side wall of the muddy water collecting cavity, the top end of the scraper abuts against the filter cloth, the two ends of the connecting pipe are connected to the clear water cavity and the filter cloth to form an inner cavity of a closed-loop structure, and the driving device is fixed to the bearing seat and used for driving the driving roller to rotate; the problems that a filtering device is short in service life, unstable in filtering quality and low in water purification treatment efficiency are well solved.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification treatment, in particular to a rotary filter cloth filter. Background Art

[0002] Filters are widely used as necessary pre-treatment equipment before water purification. There are many types of filters, and their purpose is to remove impurities (particles, suspended matter) in water and reduce SS value.

[0003] At present, filters generally use quartz sand filters, bag filters, etc., and the filter materials include quartz sand and filter bags (filter nets). Quartz sand can absorb and retain large particles of impurities in the water. However, after long-term use, the quartz sand will become hardened, and the flow rate will gradually decrease, affecting the water supply. Although various measures have been taken, such as adding backwashing devices and pulse bubble devices, the flushing effect is not obvious due to the high density of quartz sand and the thick filter layer. After a long time, the filtration volume will still decrease and the sand layer will become hardened. At the same time, the workload of replacing quartz sand is large, and the water outage time is long. The filter material of the bag filter is PP cotton (or filter net). Through pressure unidirectional filtration, impurities are retained in the filter bag. It is necessary to manually shut down the machine in time to open it for cleaning or replace the filter bag (filter net), which not only increases the difficulty of operation, but also reduces the efficiency of water purification. Utility Model Content

[0004] The utility model aims to provide a rotary filter cloth filter, which is used to solve the problems of short service life, unstable filtering quality and low water purification efficiency of the filtering device in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rotary filter cloth filter, a raw water chamber and a clean water chamber are respectively provided on both sides of the inner cavity of the box body, a muddy water collecting chamber is provided above the clean water chamber, and a water inlet and a clean water outlet are respectively provided on the side walls of the box body corresponding to the positions of the raw water chamber and the clean water chamber, the bearing seats are respectively fixed to the front and rear parts above the muddy water collecting chamber, an active roller is rotatably installed between the bearing seats, a driven roller is rotatably installed between the bottom ends of the front and rear walls of the box body located on the inner side of the clean water chamber, the filter cloth is a closed-loop structure that bypasses the active roller and the driven roller in sequence, the bottom end of the scraper plate is fixed to the top end of the inner wall of the muddy water collecting chamber and the top end is abutted against the filter cloth, the two ends of the connecting pipe are respectively connected to the clean water chamber and the filter cloth to form an inner cavity of a closed-loop structure, and the driving device is fixed to the bearing seat and is used to drive the active roller to rotate.

[0006] Preferably, a sedimentation chamber having one end connected to the mud and water collecting chamber is provided at the rear portion of the top end of the box body, a mud discharge port is provided at a position corresponding to the bottom of the sedimentation chamber on the rear wall of the box body, an overflow weir is provided on the side of the inner cavity of the sedimentation chamber away from the mud and water collecting chamber, and a return water hole connected to the raw water chamber is provided on the front wall of the sedimentation chamber located outside the overflow weir.

[0007] Preferably, tensioning rollers are rotatably mounted on the front and rear walls of the box body corresponding to the position of the lower side of the filter cloth, and the tensioning rollers are supported on the filter cloth.

[0008] Preferably, a spray pipe is provided at the top of the inner cavity of the closed-loop structure formed by the filter cloth, and the spray pipe includes a water pipe located on the upper side of the scraper plate and extending in a direction perpendicular to the front and rear walls of the box body, and a nozzle axially installed at the bottom of the water pipe and spraying water toward the mud and water collection chamber. The water inlet end of the water pipe is connected to a water pump, and the input end of the water pump is placed in the clean water chamber.

[0009] Preferably, the front wall of the box body is provided with a first drain port and a second drain port at positions corresponding to the bottom of the clean water chamber and the bottom of the raw water chamber, respectively.

[0010] Preferably, sealing strips are fixed to the upper and lower sides of the front and rear walls of the inner cavity of the box body corresponding to the closed-loop structure formed by the filter cloth.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model relates to a rotary filter cloth filter, in which the filter cloth forms a closed-loop structure, and the closed-loop structure runs continuously under the action of a driving mechanism, and foreign particles trapped on the surface of the filter cloth are promptly removed by a scraper, thereby ensuring that the filter cloth can maintain a good filtering effect for a long time, which not only prolongs the service life of the filter structure, but also ensures the stability of the filtering quality.

[0013] 2. The utility model relates to a rotary filter cloth filter which greatly reduces the downtime for cleaning, thereby improving water purification efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the main structure of the utility model as a whole;

[0015] Figure 2 It is a schematic diagram of the overall structure of the utility model from top view;

[0016] Figure 3 For this utility model Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0017] In the figure: 1-box; 1.1-raw water chamber; 1.2-clean water chamber; 1.3-mud and water collection chamber; 1.4-sedimentation chamber; 1.5-water inlet; 1.6-clean water outlet; 1.7-return hole; 1.8-mud outlet; 1.9-overflow weir; 1.10-first drain outlet; 1.11-second drain outlet;

[0018] 2-Connecting pipe;

[0019] 3-bearing seat; 3.1-active roller;

[0020] 4- driven roller;

[0021] 5- Driving equipment;

[0022] 6- Filter cloth;

[0023] 7- tension roller;

[0024] 8- Mud scraper;

[0025] 9- Sealing strip;

[0026] 10-Sprinkler pipe; 10.1-Water pipe; 10.2-Sprinkler head. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-3 The utility model provides a technical solution, a rotary filter cloth filter, a raw water chamber 1.1 and a clean water chamber 1.2 are respectively provided on both sides of the inner cavity of the box body 1, a muddy water collection chamber 1.3 is provided above the clean water chamber 1.2, and a water inlet 1.5 and a clean water outlet 1.6 are respectively provided at positions corresponding to the raw water chamber 1.1 and the clean water chamber 1.2 on the side wall of the box body 1. A sedimentation chamber 1.4 whose one end is connected to the muddy water collection chamber 1.3 is provided at the rear of the top of the box body 1, a mud discharge port 1.8 is provided at a position corresponding to the bottom of the sedimentation chamber 1.4 on the rear wall of the box body 1, an overflow weir 1.9 is provided on the side of the inner cavity of the sedimentation chamber 1.4 away from the muddy water collection chamber 1.3, and a return water hole 1.7 connected to the raw water chamber 1.1 is provided on the front wall of the sedimentation chamber 1.4 located outside the overflow weir 1.9. Among them, a valve is installed at the mud discharge port 1.8 to control the opening and closing of the mud discharge port 1.8.

[0029] The bearing seats 3 are respectively fixed to the front and rear parts above the mud and water collecting chamber 1.3, and a driving roller 3.1 is rotatably installed between the bearing seats 3.

[0030] A driven roller 4 is rotatably mounted between the bottom ends of the front and rear walls of the box body 1 located inside the clean water chamber 1.2.

[0031] The filter cloth 6 is a closed loop structure that sequentially passes through the active roller 3.1 and the driven roller 4, wherein the filter cloth 6 can be made of PP cotton and is connected at the joint in a quick-release manner to facilitate efficient loading and unloading of the filter cloth 6. The inner cavity of the closed loop structure of the filter cloth 6 forms a clear water zone.

[0032] The bottom end of the scraper blade 8 is detachably fixed to the top of the inner wall of the mud and water collecting chamber 1.3 and the top end is against the filter cloth 6, wherein the scraper blade 8 is made of rubber and its bottom end is bolted to the top of the inner wall of the mud and water collecting chamber 1.3.

[0033] The two ends of the connecting pipe 2 are respectively connected to the clean water chamber 1.2 and the filter cloth 6 to form an inner cavity (clean water area) of a closed-loop structure, wherein the clean water chamber 1.2 and the corresponding front and rear walls of the clean water area are respectively provided with connecting pipes 2 to improve the efficiency of discharging clean water in the clean water area to the clean water chamber 1.2.

[0034] The driving device is fixed on the bearing seat 3 and is used to drive the active roller 3.1 to rotate. The driving device is composed of a motor and a reducer.

[0035] The front and rear walls of the box body 1 are rotatably mounted with a tensioning roller 7 corresponding to the lower side of the filter cloth 6, and the tensioning roller 7 is supported on the filter cloth 6. The front and rear end bases of the tensioning roller 7 are slidably connected to the front and rear walls of the inner cavity of the box body 1, so that the tension of the filter cloth 6 can be adjusted by moving the tensioning roller 7.

[0036] A spray pipe 10 is provided at the top of the inner cavity of the closed-loop structure formed by the filter cloth 6. The spray pipe 10 includes a water pipe 10.1 located on the upper side of the scraper blade 8 and extending in a direction perpendicular to the front and rear walls of the box body 1, and a nozzle 10.2 axially installed at the bottom of the water pipe 10.1 and spraying water toward the mud and water collecting chamber 1.3. A water pump is connected to the water inlet end of the water pipe 10.1, and the input end of the water pump is placed in the clean water chamber 1.2.

[0037] In summary, the raw water to be filtered and purified first flows into the raw water chamber 1.1 from the water inlet 1.5.

[0038] The driving device 5 drives the active roller 3.1 to rotate, so that the conveyor belt structure formed by the active roller 3.1, the driven roller 4 and the filter cloth 6 of the closed loop structure operates continuously.

[0039] The raw water passes through the filter cloth 6 and enters the clean water area of ​​the closed-loop inner cavity. The filtered clean water then enters the clean water cavity 1.2 from the clean water area through the connecting pipe 2, and is finally discharged from the clean water outlet 1.6 to the next processing link.

[0040] The solid particle impurities in the raw water will be trapped and adsorbed on the outer surface of the filter cloth 6. The nozzle 10.2 sprays water from the inside of the filter cloth 6 to the outside, so that a part of the solid impurity particles attached to the outer surface of the filter cloth 6 are washed into the mud and water collection chamber 1.3. When passing through the scraper 8, another part of the solid particle impurities adsorbed on the outer surface of the filter cloth 6 will be further removed and slide into the mud and water collection chamber 1.3.

[0041] The muddy water in the muddy water collection chamber 1.3 flows into the sedimentation chamber 1.4. The sedimentation chamber 1.4 is configured as a bucket-shaped structure. The solid impurity particles in the muddy water will settle and gather at the bottom of the sedimentation chamber 1.4, and the supernatant will flow to the end of the inner cavity of the sedimentation chamber 1.4 through the overflow weir 1.9, and flow to the raw water chamber 1.1 through the return water hole 1.7. The return water is mixed with the raw water and then filtered.

[0042] When a large amount of sludge settles at the bottom of the sedimentation chamber 1.4, the sludge can be removed through the sludge discharge port 1.8.

[0043] In order to facilitate the operation of emptying the clean water chamber 1.2 and the raw water chamber 1.1 in the inner cavity of the box body 1, the front wall of the box body 1 is provided with a first emptying port 1.10 and a second emptying port 1.11 at positions corresponding to the bottom of the clean water chamber 1.2 and the bottom of the raw water chamber 1.1, respectively, wherein valves are installed at the first emptying port 1.10 and the second emptying port 1.11 for controlling the switch.

[0044] In order to improve the sealing performance and prevent raw water from entering the inner cavity of the closed loop structure formed by the filter cloth 6, sealing strips 9 are fixed to the upper and lower sides of the front and rear walls of the inner cavity of the box body 1 corresponding to the closed loop structure formed by the filter cloth 6.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary filter cloth filter, characterized in that: include: A box body (1), wherein a raw water chamber (1.1) and a clean water chamber (1.2) are respectively provided on both sides of an inner cavity of the box body (1), a muddy water collection chamber (1.3) is provided above the clean water chamber (1.2), and a water inlet (1.5) and a clean water outlet (1.6) are respectively provided on a side wall of the box body (1) at positions corresponding to the raw water chamber (1.1) and the clean water chamber (1.2); Bearing seats (3), the bearing seats (3) being respectively fixed to the front and rear parts above the mud and water collecting chamber (1.3), and a driving roller (3.1) being rotatably mounted between the bearing seats (3); A driven roller (4), the box body (1) being rotatably mounted between the bottom ends of the front and rear walls inside the clean water chamber (1.2); A filter cloth (6), the filter cloth (6) being a closed loop structure that sequentially passes around the active roller (3.1) and the driven roller (4); A mud scraper (8), the bottom end of the mud scraper (8) being fixed to the top end of the inner wall of the mud and water collecting chamber (1.3) and the top end being in contact with the filter cloth (6); A connecting pipe (2), the two ends of the connecting pipe (2) being respectively connected to the clean water chamber (1.2) and the filter cloth (6) to form an inner cavity of a closed loop structure; A driving device (5) is fixed on the bearing seat (3) and is used to drive the active roller (3.1) to rotate.

2. A rotary filter cloth filter according to claim 1, characterized in that: A sedimentation chamber (1.4) having one end connected to the muddy water collection chamber (1.3) is provided at the rear portion of the top end of the box body (1), a mud discharge port (1.8) is provided at a position of the rear wall of the box body (1) corresponding to the bottom of the sedimentation chamber (1.4), an overflow weir (1.9) is provided on a side of the inner cavity of the sedimentation chamber (1.4) away from the muddy water collection chamber (1.3), and a return water hole (1.7) connected to the raw water chamber (1.1) is provided on the front wall of the sedimentation chamber (1.4) located outside the overflow weir (1.9).

3. A rotary filter cloth filter according to claim 1, characterized in that: A tensioning roller (7) is rotatably mounted on the front and rear walls of the box body (1) at a position corresponding to the lower side of the filter cloth (6), and the tensioning roller (7) is supported on the filter cloth (6).

4. A rotary filter cloth filter according to claim 1, characterized in that: A spray pipe (10) is provided at the top of the inner cavity of the closed-loop structure formed by the filter cloth (6), the spray pipe (10) comprising a water pipe (10.1) located on the upper side of the scraper blade (8) and extending in a direction perpendicular to the front and rear walls of the box body (1), and a nozzle (10.2) installed axially at the bottom of the water pipe (10.1) and spraying water in the direction of the mud and water collection chamber (1.3), the water inlet end of the water pipe (10.1) is connected to a water pump, and the input end of the water pump is placed in the clean water chamber (1.2).

5. The rotary filter cloth filter according to claim 1, characterized in that: A first drain opening (1.10) and a second drain opening (1.11) are respectively provided at positions of the front wall of the box body (1) corresponding to the bottom of the clean water chamber (1.2) and the bottom of the raw water chamber (1.1).

6. A rotary filter cloth filter according to claim 1, characterized in that: Sealing strips (9) are fixed to the upper and lower sides of the front and rear walls of the inner cavity of the box body (1) corresponding to the closed-loop structure formed by the filter cloth (6), respectively.

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