Novel security filter device

Abstract

The utility model discloses a novel security filter device which comprises a base, and a filtering mechanism, a medicine dissolving box and a cleaning mechanism are mounted on the base; the cleaning mechanism is connected with the filtering mechanism and the medicine dissolving box through a pipeline system; the water purifier further comprises a control mechanism, and the control mechanism is used for controlling the filtering mechanism, the cleaning mechanism and the pipeline system. According to the utility model, the inlet water quality of the ultrafiltration device can be guaranteed, the flux of an ultrafiltration system is greatly improved, the cleaning frequency of the ultrafiltration device is reduced, the use amount of cleaning chemicals for the ultrafiltration device is saved, and the effects of reducing cost and improving efficiency are achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of sewage filtration, in particular to a novel security filter device. BACKGROUND

[0002] At present, most water reclamation plants generally adopt "double membrane method CMF + RO" for sewage desalination advanced treatment, the process adopts continuous microfiltration device (CMF) for pretreatment, and reverse osmosis device (RO) for post desalination treatment "double membrane method" technology, wherein the ultrafiltration membrane is used as front-end treatment of reverse osmosis membrane.

[0003] In order to guarantee the safety of the ultrafiltration membrane system, a security filter is generally arranged at the water inlet end of the ultrafiltration device to remove larger solid particles, suspended matter (generally with a diameter greater than 40 microns), part of colloids and microorganisms and the like in the water inlet, so as to effectively prevent these impurities from blocking the surface of the ultrafiltration membrane and even damaging the structure of the ultrafiltration membrane, thereby guaranteeing the stability and safety of the water inlet of the ultrafiltration membrane.

[0004] The water quality of the ultrafiltration outlet directly affects the operation effect of the reverse osmosis membrane, and therefore improving the water quality of the ultrafiltration outlet has significant benefits for guaranteeing the stable operation of the reverse osmosis system, prolonging the service life of the equipment, improving the efficiency and reducing the maintenance and operation cost.

[0005] For the ultrafiltration device, it is a key factor to guarantee the continuous and stable operation of the ultrafiltration device to guarantee the stable water inlet quality and especially to guarantee the treatment performance of the security filter after efficiently and stably removing impurities such as microorganisms, suspended matter and colloidal particles in the water inlet.

[0006] The security filter at the water inlet end of the ultrafiltration device in the prior art can guarantee the filtration precision, but because the water quality at the water inlet end contains many impurities, microorganisms and the like are prone to deposit on the surface of the filter element and breed, so that the filter element is often blocked during production and operation, and is basically blocked to the extent that it cannot continue to operate after about 2 months during the operation peak period, so that personnel need to frequently disassemble the security filter to thoroughly clean the filter element therein, which not only wastes time and effort but also delays the normal production and operation, and therefore the security filter at the water inlet end of the ultrafiltration device is selected to be upgraded and modified to increase the online chemical cleaning function, so as to reduce the frequency and degree of pollution and reduce the maintenance pressure. CONTENT OF THE UTILITY MODEL

[0007] According to the above problems, the utility model provides a novel security filter device, and the specific scheme is as follows:

[0008] A new security filter device, comprising a base, a filter mechanism, a medicine dissolving tank and a cleaning mechanism mounted on the base; the cleaning mechanism is connected with the filter mechanism and the medicine dissolving tank through a pipeline system.

[0009] Further comprising a control mechanism for controlling the filter mechanism, the cleaning mechanism and the pipeline system.

[0010] Preferably, the filter mechanism comprises a filter fastened on the base through a second bolt and a second nut, the filter is provided with a water inlet and a water outlet, and a steel filter core is installed inside the filter.

[0011] The upper part of the filter is connected with the cleaning mechanism through the pipeline system, and the lower part of the filter is provided with a cleaning liquid outlet.

[0012] Further preferably, the cleaning mechanism comprises a cleaning pump fastened on the base through a third bolt and a third nut, and the cleaning pump is connected with the medicine dissolving tank and the filter through the pipeline system.

[0013] Further preferably, the pipeline system comprises a vertical pipeline system and a horizontal pipeline system connected with the cleaning pump, the vertical pipeline system is connected with the medicine dissolving tank and the filter, and the horizontal pipeline system is connected with the medicine dissolving tank.

[0014] Further preferably, the vertical pipeline system comprises a first variable-diameter tee, a No. 2 end of the first variable-diameter tee is connected with the filter through a flange, a No. 1 end of the first variable-diameter tee is connected with a first elbow, the other end of the first elbow is connected with a flow meter, the other end of the flow meter is connected with a first ball valve through a first flange, the other end of the first ball valve is connected with a No. 3 end of a second variable-diameter tee, a No. 2 end of the second variable-diameter tee is connected with the cleaning pump through a PVC pipeline, a No. 1 end of the second variable-diameter tee is connected with a second ball valve through a second flange, and the second ball valve is connected with the medicine dissolving tank through a second elbow.

[0015] Further preferably, a No. 3 end of the first variable-diameter tee is connected with a pressure gauge.

[0016] Further preferably, the horizontal pipeline system is connected with a PVC pipeline through a head external thread, and the other end of the PVC pipeline is connected with the medicine dissolving tank.

[0017] Further preferably, the medicine dissolving tank is provided with a cleaning liquid pollution discharge interface and a cleaning liquid backflow interface.

[0018] Further preferably, the medicine dissolving tank is a PE polyethylene rotational molding barrel.

[0019] Further preferably, the pressure gauge is a diaphragm pressure gauge.

[0020] The utility model discloses the beneficial effect is:

[0021] 1. effectively reduce the frequency of opening the cover and washing, save artificial working hours cost, reduce the complexity of operation and maintenance;

[0022] 2. effectively guarantee the water inflow, reduce the filter equipment pollution degree, thereby reduce the power of the ultrafiltration device inflow pump, play the role of reducing the cost and increasing the benefit;

[0023] 3. can make the water quality of ultrafiltration device inflow be guaranteed, greatly promote the ultrafiltration system flux, reduce the cleaning frequency of ultrafiltration device, save the use amount of the cleaning medicine of ultrafiltration device, play the role of reducing the cost and increasing the benefit. BRIEF DESCRIPTION OF DRAWINGS

[0024] The technical scheme of the utility model will be described further in detail below in combination with the drawings and examples, but it should be known that these drawings are only designed for the purpose of explanation, thus not as the limitation of the range of the utility model. In addition, unless specially pointed out, these drawings only intend to conceptually illustrate the structural configuration described here, and not necessarily draw in proportion.

[0025] Figure 1 It is the plane structure schematic diagram of the utility model;

[0026] Figure 2 It is the plan view of the utility model;

[0027] In the drawing:

[0028] 1-dissolve medicine box;2-pressure gauge;3-first reducing tee;4-first elbow;5-flow meter;6-first flange;7-first bolt;8-first nut;9-first ball valve;10-second reducing tee;11-second flange;12-one head outer silk;13-cleaning pump;14-base;15-filter;16-second ball valve;17-second elbow;18-second bolt;19-second nut;20-third bolt;21-third nut;22-cleaning liquid outlet;23-cleaning liquid blowdown interface;24-cleaning liquid backflow interface. DETAILED DESCRIPTION

[0029] First of all, it needs to be pointed out that the specific structure, characteristics and advantages of the utility model will be specifically described in the following example way, however, all the descriptions are only for illustration, and should not be understood as any limitation on the utility model. In addition, any single technical feature described or implied in the embodiments mentioned in the present application, or any single technical feature shown or implied in the drawings, can still be combined or deleted between these technical features, so as to obtain more other embodiments of the utility model which may not be directly mentioned in the present application. In addition, in order to simplify the drawing, the same or similar technical features may be marked only in one place in the same drawing.

[0030] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connecting", "fixing", "screw connection" and other terms should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise explicitly limited, the above-mentioned terms in the utility model can be understood according to the specific meaning of the above-mentioned terms in the utility model according to the specific situation.

[0031] The specific structure, characteristics and advantages of the utility model will be specifically described in the following example way, however, all the descriptions are only for illustration, and should not be understood as any limitation on the utility model. Figure 1 The specific structure, characteristics and advantages of the utility model will be specifically described in the following example way, however, all the descriptions are only for illustration, and should not be understood as any limitation on the utility model. Figure 2 The specific structure, characteristics and advantages of the utility model will be specifically described in the following example way, however, all the descriptions are only for illustration, and should not be understood as any limitation on the utility model.

[0032] Embodiment 1:

[0033] A novel security filter device, including base 14, the filter mechanism, medicine dissolving box 1 and cleaning mechanism are installed on the base 14, the cleaning mechanism is connected with the filter mechanism and the medicine dissolving box 1 through pipeline system;

[0034] Further comprising control mechanism, the control mechanism is used for controlling the filter mechanism, the cleaning mechanism and the pipeline system.

[0035] Working principle:

[0036] The main structure of the device is filter mechanism and cleaning mechanism, on the basis of the original security filter, the pipeline part of hardware, dosing and cleaning are optimized. After pressurization, the water enters the filter mechanism inside through the pipeline system, and then enters the pipeline system after removing impurities by the filter mechanism, and then is processed by the cleaning mechanism.

[0037] Further, in the embodiments, the filter mechanism can further include a filter 15 fastened to the base 14 by a second bolt 18 and a second nut 19, the filter 15 is provided with a water inlet and a water outlet, and a steel filter core is installed in the interior of the filter 15.

[0038] The upper part of the filter 15 is connected with the cleaning mechanism through a pipeline system, and the lower part of the filter 15 is provided with a cleaning liquid outlet 22.

[0039] In the embodiment, when the device is in a normal operation mode, the main valves at the water inlet and outlet of the filter 15 are in an open state. After the water inlet is pressurized by an inlet pump, the water enters the inside of the filter through the water inlet pipeline. After being filtered by the steel filter element, most of the suspended solids, colloids, insect eggs, silt and other impurities are removed, and then the water enters the pipeline system through the water outlet pipeline. The water inlet valve and the water outlet valve on the pipeline system connected with the cleaning mechanism are in a closed state to prevent the water from entering the pipeline system and causing water leakage and other phenomena.

[0040] Further, in the embodiment, the cleaning mechanism can further include a cleaning pump 13 fastened to the base 14 through a third bolt 20 and a third nut 21. The cleaning pump 13 is connected with the dissolving tank 1 and the filter 15 through a pipeline system.

[0041] In the embodiment, a cleaning pump is arranged at the pipeline outlet of the filter. The head of the cleaning pump is about 10 m, and the flow is about 18 m 3 / h, so that the pressure of the cleaning pipeline is about 4 bar. A time relay can be added to the cleaning pump to control the operation time of the cleaning pump. The time relay can be set to 60 minutes to start, stop and restart. In the case of less pollution, the cleaning time is set to about one hour.

[0042] In actual use, taking a 7.5 kw cleaning pump as an example, the full-frequency normal working current is 15 A, and the general working frequency is 35 hz. The field control signal is transmitted to the field Siemens PLC 200 SAMRT to control the panel as the field control element.

[0043] Further, in the embodiment, the pipeline system can further include a vertical pipeline system and a horizontal pipeline system connected with the cleaning pump 13. The vertical pipeline system is connected with the dissolving tank 1 and the filter 15, and the horizontal pipeline system is connected with the dissolving tank 1.

[0044] Further, it can be considered in the embodiment that the vertical pipeline system comprises a first variable diameter tee 3, the second end of the first variable diameter tee 3 is connected with the filter 15 through a flange, the first end of the first variable diameter tee 3 is connected with a first elbow 4, the other end of the first elbow 4 is connected with a flow meter 5, the other end of the flow meter 5 is connected with a first ball valve 9 through a first flange 6, the other end of the first ball valve 9 is connected with a third end of a second variable diameter tee 10, the second end of the second variable diameter tee 10 is connected with the cleaning pump 13 through a PVC pipeline, the first end of the second variable diameter tee 10 is connected with a second ball valve 16 through a second flange 11, the second ball valve 16 is connected with the medicine dissolving tank 1 through a second elbow 17.

[0045] In the embodiment, the medicine dissolving tank 1 is connected with the second ball valve 16 through the second elbow 17, the second ball valve 16 is used as a medicine inlet valve of the cleaning pipeline, the second ball valve 16 is connected with the first end of the second variable diameter tee 10 through the second flange 11, the second end of the variable diameter tee 10 is connected with the cleaning pump 13 through the PVC pipeline, the third end of the second variable diameter tee 10 is connected with the first end of the first ball valve 9, the first ball valve 9 is used as a cleaning liquid filter valve, the second end of the first ball valve 9 is connected with one end of the flow meter 5 through the first flange 6, and the first flange 6 is fixed through the first bolt 7 and the first nut 8.

[0046] The other end of the flow meter 5 is directly connected with the first elbow 4, the other end of the first elbow 4 is connected with the first end of the first variable diameter tee 3, the second end of the first variable diameter tee 3 is directly connected with the filter 15 through a flange, and the third end of the first variable diameter tee 3 is directly connected with the pressure gauge 2. The filter cleaning device is installed on the No. 14 base through bolt fastening.

[0047] Further, it can be considered in the embodiment that the third end of the first variable diameter tee 3 is connected with the pressure gauge 2.

[0048] Further, it can be considered in the embodiment that the horizontal pipeline system is connected with the PVC pipeline through a head external thread 12, and the other end of the PVC pipeline is connected with the medicine dissolving tank 1.

[0049] Further, it can be considered in the embodiment that the medicine dissolving tank 1 is provided with a cleaning liquid blowdown interface 23 and a cleaning liquid backflow interface 24.

[0050] In the embodiment, the cleaning liquid blowdown interface 23 and the cleaning liquid backflow interface 24 are used for discharging or receiving cleaning liquid.

[0051] Further, it can be considered in the embodiment that the medicine dissolving tank 1 is a PE polyethylene rotational molding barrel. In the embodiment, the capacity of the medicine dissolving tank 1 is 1000 liters, the bottom blowdown is convenient and easy to operate, and the polyethylene rotational molding barrel is durable and low in cost.

[0052] Further, it can also be considered in the embodiments that the pressure gauge 2 is a diaphragm pressure gauge. In this embodiment, the diaphragm pressure gauge is suitable for measuring the pressure of corrosive, high-temperature or high-viscosity medium. It transmits the pressure to the measuring element of the mechanical pressure gauge through a flexible diaphragm, thereby realizing the measurement of the pressure of the measured medium.

[0053] When the device is in the online cleaning mode, the online cleaning mode can be started when the water pressure difference of the filter 15 is greater than 10%.

[0054] In this mode, the main valve before and after the filter 15 should be manually closed first, then the appropriate cleaning agent is added in the medicine tank 1, and the cleaning mode is started by controlling the PLC through the control mechanism, the first ball valve 9 and the second ball valve 16 are automatically opened, and the cleaning pump 13 is started, the cleaning liquid is punched into the filter 15 from the water production end, and the impurities intercepted on the surface of the filter core are removed by using the water pressure during backwashing, and the appropriate cleaning time is set by the control mechanism controlling the PLC. According to the internal pollution of the filter 15, the cycle time can be increased or decreased, so that the liquid can be fully circulated in the filter 15.

[0055] During the circulation, the PLC automatically detects the liquid level of the medicine tank 1 and the cleaning pressure. The liquid level of the medicine tank 1 should be maintained in a reasonable range, and the cleaning pressure should be maintained at about 2-3bar. After the cleaning circulation time is over, the cleaning pump 13 should be automatically stopped, then the blowdown interface 23 below the medicine tank 1 is manually opened, and after the cleaning liquid is completely discharged, the water outlet port of the filter device is manually opened, and a large amount of water is used to flush the filter device until it is qualified, then the first ball valve 9 and the second ball valve 16 are closed by controlling the PLC through the control mechanism, and the water inlet main valve of the filter 15 is opened to restore the normal operation mode.

[0056] The device can effectively guarantee the water inflow, the backwashing function of adding medicine can effectively reduce the pollution degree of the filter equipment, and the suspended solids index of the water inflow of the ultrafiltration equipment can be reduced by 20%, so that the power of the inflow pump of the ultrafiltration device is reduced, and the effect of reducing cost and increasing efficiency is achieved. Therefore, the new ultrafiltration device has obvious use advantages compared with the old filter of the previous type.

[0057] The above embodiments are described in detail, but the content described is only a preferred embodiment of the utility model, and cannot be considered as limiting the scope of the utility model. Any equivalent changes and improvements within the scope of the utility model application should still belong to the patent coverage of the utility model.

Claims

1. A novel security filter device, characterized in that: Includes a base (14), on which a filter mechanism, a dissolving tank (1) and a cleaning mechanism are installed; the cleaning mechanism is connected to the filter mechanism and the dissolving tank (1) through a pipeline system. It also includes a control mechanism for controlling the filtration mechanism, the cleaning mechanism, and the piping system; The piping system includes a vertical piping system and a horizontal piping system connected to the cleaning pump (13). The vertical piping system is connected to the dissolving tank (1) and the filter (15), and the horizontal piping system is connected to the dissolving tank (1). The vertical piping system includes a first reducing tee (3), the second end of which is connected to the filter (15) via a flange, the first end of which is connected to the first elbow (4), the other end of which is connected to a flow meter (5), the other end of which is connected to a first ball valve (9) via a first flange (6), the other end of which is connected to the third end of a second reducing tee (10), the second end of which is connected to the cleaning pump (13) via a PVC pipe, the first end of which is connected to a second ball valve (16) via a second flange (11), and the second ball valve (16) is connected to the dissolving tank (1) via a second elbow (17).

2. The novel security filter device according to claim 1, characterized in that: The filtration mechanism includes a filter (15) fastened to the base (14) by a second bolt (18) and a second nut (19), the filter (15) having an inlet and an outlet, and a steel filter element installed inside the filter (15); The upper part of the filter (15) is connected to the cleaning mechanism through a pipeline system, and the lower part of the filter (15) is provided with a cleaning liquid outlet (22).

3. The novel security filter device according to claim 2, characterized in that: The cleaning mechanism includes a cleaning pump (13) fastened to the base (14) by a third bolt (20) and a third nut (21), the cleaning pump (13) being connected to the dissolving tank (1) and the filter (15) via a piping system.

4. The novel security filter device according to claim 1, characterized in that: The pressure gauge (2) is connected to the third end of the first reducing tee (3).

5. A novel security filter device according to claim 1, characterized in that: The transverse piping system is connected to the PVC pipe via an external thread (12) at one end, and the other end of the PVC pipe is connected to the dissolving tank (1).

6. A novel security filter device according to claim 1, characterized in that: The dissolving tank (1) is equipped with a cleaning fluid drain port (23) and a cleaning fluid return port (24).

7. A novel security filter device according to claim 1, characterized in that: The dissolving tank (1) is a PE polyethylene rotational molding tank.

8. A novel security filter device according to claim 4, characterized in that: The pressure gauge (2) is a diaphragm pressure gauge.

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