CN217449090U

CN217449090U - Single valve control type liquid collecting and clear and turbid separating device of open flow filter press

Info

Publication number: CN217449090U
Application number: CN202221053871.6U
Authority: CN
Inventors: 耿振起; 郝兵; 耿震; 田国军; 梁颖
Original assignee: Jingjin Equipment Co Ltd
Current assignee: Jingjin Equipment Co Ltd
Priority date: 2022-05-06
Filing date: 2022-05-06
Publication date: 2022-09-20
Anticipated expiration: 2032-05-06

Abstract

The utility model discloses open flow filter press's single valve control formula collection liquid and clear turbid diverging device, the main points of innovation scheme are: the existing double-valve control type liquid collecting and clear and turbid separating device is improved into a single-valve control type liquid collecting and clear and turbid separating device which comprises a clear current liquid collecting tank, a turbidity monitor and a turbid liquid separating valve; the open flow collecting tank is provided with a turbid liquid flow dividing pipe and a clear liquid flow dividing pipe and is positioned at one end under the open flow collecting tank, wherein the clear liquid flow dividing pipe is positioned at the outermost end, and the turbid liquid flow dividing pipe is adjacent to the clear liquid flow dividing pipe at the upstream; the turbidity monitor can monitor turbidity; the turbid liquid shunt valve is arranged on the turbid liquid shunt pipe, and is opened when the liquid is turbid, and the turbid liquid flows to the turbid liquid pool from the turbid liquid shunt pipe; when the liquid is clear, the turbid liquid shunt valve is closed, and clear liquid flows to the clear liquid pool from the clear liquid shunt pipe; the technical problem that the single valve is used for controlling the clear and turbid double-pipe flow distribution which is always considered impossible by people is solved; a set of clear liquid shunt valve device is omitted, and the device still has the function of dynamically and automatically shunting clear and turbid filtrate, so that cost is reduced and efficiency is improved.

Description

Single valve control type liquid collecting and clear and turbid separating device of open flow filter press

Technical Field

The utility model belongs to the technical field of automatic free flow pressure filter (patent classification number B01D 25/12), a free flow collection liquid and clear turbid diverging device is related to.

Background

The filter press is a pressurized filtering device with multiple filtering chambers operated intermittently; the automatic filter press is a filter press which is integrated mechanically, electrically and hydraulically and intelligently controlled by a PLC (programmable logic controller); an automatic open flow filter press is an automatic filter press with an open flow liquid outlet mode; the device mainly comprises a double-beam frame, a filter plate pressing mechanism, an open flow filtering mechanism, an open flow liquid collecting and clear and turbid separating device, a turning plate liquid receiving mechanism, a pulling plate cake discharging mechanism, a filter cloth cleaning mechanism and a PLC program control system; the device is suitable for automatic solid-liquid separation of various suspension materials (namely a mixture of liquid and solid particles), and different users respectively need filter cakes or filter liquor as products.

The low-pressure static filtering process of the open flow filter press comprises the following steps: the solid-liquid mixed material is input into each filter chamber through a feed hole by a feed pump, so that pressure difference is formed between two sides of the filter cloth, low-pressure static filtration is carried out, particles in the material are intercepted by the filter cloth to form a filter cake in the filter chamber, filtrate passes through the filter cloth and flows into the open flow liquid collecting and clear and turbid separating device from open flow water nozzles on two sides of the open flow filter plate, and the filter plate is pulled open to realize gravity cake discharging. The clear flow filtrate is turbid firstly and then is clear-the beginning, and part of valuable particles pass through the filter cloth pores along with the filtrate, so that the filtrate is turbid; subsequently, a particle accumulation (similar to accumulation media) is formed on the filter cloth, which hinders the passage of particles and makes the filtrate gradually clear.

The open-flow liquid collecting and clear-and-turbid separating device is a double-valve control type liquid collecting and clear-and-turbid separating device and comprises an open-flow liquid collecting tank and a clear-and-turbid separating device; an open-flow sump having a middle outlet; the clear and turbid liquid shunting device is a device for on-line monitoring of filtrate turbidity and dynamic automatic shunting of clear and turbid filtrate and comprises a three-way filtrate chamber, a clear liquid shunting pipe, a turbid liquid shunting pipe, a double pneumatic ball valve, a turbidimeter cage and a turbidity monitor; the double pneumatic ball valves respectively control the opening and closing of the clear liquid shunt pipe and the turbid liquid shunt pipe; the device integrally spans the head and the tail of the filter press, and two ends of the device are fixedly arranged on a machine head supporting leg and a machine tail supporting leg and are positioned below open flow water nozzles on two sides of an open flow filter plate; filtrate directly flows into a double-open-flow collecting tank from water nozzles and hoses on two sides of each filter plate respectively (not hidden), and turbid liquid and clear liquid sequentially flow into a turbid liquid pool or a clear liquid pool through a turbid liquid shunt pipe and a clear liquid shunt pipe respectively under the control of a double-double pneumatic ball valve, so that valuable particles in the turbid liquid can be recovered conveniently; under the control of the PLC program control system, the device has the functions of open flow liquid receiving, flowing liquid containing and dynamic automatic flow separation of clear and turbid filtrate.

The existing double-valve control type liquid collecting and clear and turbid separating device has the following defects: (1) the double pneumatic ball valves respectively control the clear liquid shunt pipe and the turbid liquid shunt pipe, so the structure is complex and the production cost is high; (2) the service life of the pneumatic ball valve is limited, the failure rate of double-valve control is higher than that of single-valve control, the replacement frequency of the double-valve control is higher than that of the single-valve control, the replacement of the pneumatic ball valve causes shutdown and error production, and the technical problems that people always think that the structure is simplified and how to use the single-valve control to control the clear and turbid double-pipe shunt are solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming current bivalve control formula collection liquid and clear turbid diverging device's defect, solving two pneumatic ball valves and controlling clear liquid shunt tubes and turbid liquid shunt tubes respectively, the structure is complicated, manufacturing cost is higher, the bivalve is higher than the single valve change frequency, change pneumatic ball valve and lead to the technical problem of shut down miscarriage, provide a single valve control formula collection liquid and clear turbid diverging device of free-flow filter press.

The utility model provides an innovation technical scheme that prior art problem adopted is: the main point of the overall technical scheme is that compared with the prior art, the innovative overall structure has the prominent substantive characteristics that: the existing double-valve control type liquid collecting and clear and turbid shunting device is improved into a single-valve control type liquid collecting and clear and turbid shunting device, namely a device for collecting liquid by open current, monitoring turbidity of filtrate on line and shunting clear and turbid filtrate by single-valve automatic control, and comprises an open current liquid collecting tank, a turbidity monitor, a turbid liquid shunting valve and a liquid collecting tank bracket; the open flow liquid collecting tank is provided with a turbid liquid dividing pipe and a clear liquid dividing pipe and is positioned at one end under the open flow liquid collecting tank, wherein the clear liquid dividing pipe is positioned at the outermost end; the turbidity monitor is arranged in the open-flow liquid collecting tank near the turbid liquid flow dividing pipe and is connected with the PLC program control system in parallel, so that the turbidity of the filtrate can be monitored on line, and the critical information of a turbidity set value can be transmitted to the PLC program control system in time; the turbid liquid shunt valve is arranged on the turbid liquid shunt pipe and is communicated with the PLC program control system in parallel; the clear and turbid shunting process comprises the following steps: under the control of the PLC program control system, (1) when the filtrate is turbid, the turbid liquid shunt valve is automatically opened, and as the turbid liquid shunt pipe is positioned at the upstream of the clear liquid shunt pipe, turbid liquid naturally flows to a turbid liquid pool through the turbid liquid shunt pipe at the upstream, and cannot flow out from the clear liquid shunt pipe at the downstream; the principle of double-liquid-outlet single-outlet liquid outlet is that water flows to the lower part under the action of gravity, namely fluid preferentially flows out from a liquid outlet at the upstream part; (2) when the filtrate is clear, the turbid liquid shunt valve is automatically closed (namely the turbid liquid shunt pipe is closed), and the clear liquid can only flow to the clear liquid pool from the clear liquid shunt pipe; therefore, the technical problems that the double pneumatic ball valves respectively control the clear liquid flow dividing pipe and the turbid liquid flow dividing pipe, the structure is complex, the production cost is high, the double valves are high in replacement frequency compared with a single valve, and the pneumatic ball valves are replaced to cause shutdown and error production are solved.

The utility model discloses a concrete design is: (1) the open-flow liquid collecting tank comprises a liquid collecting tank main body, a particle collecting chamber, a turbid liquid flow dividing pipe, a clear liquid flow dividing pipe, a sensor mounting plate and a supporting tank rib, and is made of stainless steel materials; (1.1) open-flow liquid collecting tank part design: the device comprises a liquid collecting tank main body, a filter press and a filter press, wherein the liquid collecting tank main body is closed at two ends and is provided with a notch outer folding edge, a turbid liquid distribution square opening and a clear liquid distribution round opening; the particle collection chamber is a particle collection chamber in the square filtrate, the length and width of the particle collection chamber are equal to the width of the liquid collecting tank main body, and the bottom surface of the collection chamber is provided with a turbid liquid distribution pipe hole; the clear liquid shunt pipe and the turbid liquid shunt pipe are arranged and are short pipe joints with flanges at one ends; the arranged sensor mounting plate is provided with a double-sensor hoop mounting hole; the supporting groove ribs are notch transverse supporting ribs, and the length of the supporting groove ribs is equal to the inner width of the liquid collecting groove main body; (1.2) assembly welding of the open-flow liquid collecting tank: a plurality of supporting groove ribs are welded on the upper part of the inner wall of the liquid collecting groove main body at intervals and used for preventing the deformation of the opening of the liquid collecting groove; the upper edge of the particle collection chamber is welded on a turbid liquid distribution square opening, and the turbid liquid distribution pipe is welded on a turbid liquid distribution pipe hole on the bottom surface of the collection chamber; the clear liquid shunt pipe is welded on the clear liquid shunt round opening; the sensor mounting plate is welded on the bottom of the open-flow liquid collecting tank near the turbid liquid flow dividing pipe; thus forming an open-flow liquid collecting tank; (2) the turbidity monitor comprises a turbidity meter and a turbidity sensor; the set turbidity meter is an MIK-PTU100 type turbidity display meter; the set turbidity sensor is an MIK-PTU-801 turbidity sensor; the turbidity sensor is communicated with a turbidity meter to form a turbidity monitor; (3) the turbid liquid flow divider is a DQVT type pneumatic ball valve (the type meaning is D-low temperature, Q-ball valve, V-V shape valve core).

The utility model discloses the relation of connection of main spare part is: for convenience of explanation, a liquid collecting tank bracket and a PLC program control system closely related to the clear and turbid liquid collecting and separating device are additionally arranged; (1) and (3) assembling the open-flow liquid collection and clear-turbid flow distribution device: a sensor hoop and a turbidity sensor are arranged on a sensor mounting plate in the open-current liquid collecting tank; the turbid liquid shunt valve is arranged on a turbid liquid shunt pipe of the open-flow liquid collecting tank to form an open-flow liquid collecting and clear-turbid shunting device main body; (2) the assembly of the open-flow liquid collecting and clear-turbid separating device is as follows: the four liquid collecting tank supports are respectively welded at the corresponding heights outside the double-head supporting leg and the double-tail supporting leg; the double open flow liquid collecting and clear and turbid separating devices are respectively arranged on double liquid collecting tank brackets at two sides of the filter press and cross the filter press and are positioned below open flow water nozzles at two sides of the open flow filter plate from head to tail; the turbidity meter is arranged in the PLC program control cabinet, and the turbidity sensor is communicated with the PLC program control system; the turbid liquid flow dividing valve is communicated with the PLC program control system and is externally connected with a turbid liquid pool pipeline; the clear liquid shunt tube is externally connected with a clear liquid tank pipeline. Under the control of the PLC program control system, the open-flow liquid collecting and clear-turbidity shunting device has the functions of open-flow liquid collecting, on-line filtrate turbidity monitoring and dynamic automatic shunting of clear-turbidity filtrate.

The dynamic relation between the clear flow liquid collection device and the clear and turbid flow distribution device is as follows: under the control of the PLC program control system, the open flow liquid collecting device, the clear and turbid liquid shunting device and the open flow filtering mechanism work synchronously; (1) liquid receiving of the open-flow liquid collecting tank: the filtrate directly flows into a double-open-flow liquid collecting tank and the liquid collecting tank flows to contain liquid in a flowing manner from water nozzles and hoses on two sides of each filter plate; (2) monitoring the turbidity of the filtrate on line: the turbidity sensor monitors the turbidity of the filtrate on line and transmits the critical information of a turbidity set value to the PLC program control system in time; (3) dynamic flow division of clear and turbid filtrate: (3.1) automatically opening the turbid liquid shunt valve when the filtrate is turbid, wherein turbid liquid naturally flows to a turbid liquid pool through the turbid liquid shunt pipe at the upstream because the turbid liquid shunt pipe is positioned at the upstream of the clear liquid shunt pipe so as to recover valuable particles in the turbid liquid; and (3.2) when the filtrate is clear, the turbid liquid shunt valve is automatically closed (namely the turbid liquid shunt pipe is closed), and the clear liquid can only flow from the clear liquid shunt pipe to the clear liquid pool.

The single-valve control type liquid collecting and clear and turbid separating device of the open-flow filter press has the obvious advantages of simple structure, on-line turbidity monitoring, single-valve control double-pipe separation, clear and turbid dynamic separation, low single-valve replacement frequency, low cost and convenient installation; the device has the advantages that the existing double-valve control type liquid collecting and clear and turbid distributing device is improved into a single-valve control type liquid collecting and clear and turbid distributing device, a set of clear liquid distributing valve device is omitted, and the device still has the function of dynamically and automatically distributing clear and turbid filtrate by arranging an upstream turbid liquid distributing pipe orifice and a downstream clear liquid distributing pipe orifice which are adjacent, so that the technical problem that the clear and turbid double-pipe distributing is controlled by using a single valve, which is considered to be impossible by people, is solved; the replacement frequency of the control valve is relatively reduced, and cost and efficiency are reduced.

Drawings

Fig. 1 is a schematic diagram of the single-valve control type liquid collecting and clear and turbid separating device of the open-flow filter press of the utility model.

Fig. 2 is the open flow collecting tank schematic diagram of the single valve control type liquid collecting and clear and turbid separating device of the open flow filter press of the utility model.

Fig. 3 is the partial schematic view of the turbidity sensor installation of the single-valve control type liquid collecting and separating device of the open-flow filter press of the utility model.

Fig. 4 is the general assembly schematic diagram of the single valve control type liquid collecting and clear and turbid shunting device of the open-flow filter press and the corresponding open-flow automatic filter press.

Reference numerals: 1-open flow liquid collecting tank, 2-turbidity monitor, 3-turbid liquid shunt valve, 4-turbidity sensor, 5-turbidity meter, 6-liquid collecting tank main body, 7-particle collecting chamber, 8-turbid liquid shunt pipe, 9-clear liquid shunt pipe, 10-sensor mounting plate, 11-notch outer hem, 12-supporting groove rib, 13-sensor hoop, 14-single valve control type liquid collecting and clear and turbid shunting device of open flow filter press (short for: open flow liquid collecting and clear and turbid shunting device or the utility model), 15-open flow water nozzle, 16-tail supporting leg, 17-head supporting leg, 18-liquid collecting tank support, 19-open flow filter plate (short for: 16) and 20-PLC program control system (including PLC program control cabinet).

Detailed Description

The technical solution in the embodiment of the present invention will be described below with reference to the attached drawings in the embodiment of the single-valve control type liquid collecting and clear and turbid separating device of the open-flow filter press, and the described embodiment is only a part of the preferred embodiments, not all embodiments, of the present invention. Based on the embodiment of the utility model, all other embodiments that do not have the inventiveness that the technical staff in the field made, if the clear flow collection liquid and the clear and turbid diverging device that single valve control clear and turbid double-barrelled reposition of redundant personnel mode is the same, the structure is similar all belong to the utility model discloses a protection scope.

Example 1

A single valve control type liquid collecting and clear and turbid separating device 14 (for short, the clear and turbid liquid collecting and separating device) of an open-flow filter press has the key points of the innovative overall implementation scheme that: the existing double-valve control type liquid collecting and clear and turbid separating device is improved into a single-valve control type liquid collecting and clear and turbid separating device 14, namely a device for collecting liquid by open current, monitoring turbidity of filtrate on line and automatically separating clear and turbid filtrate by single valve, which comprises an open current liquid collecting tank 1, a turbidity monitor 2, a turbid liquid separating valve 3 and a liquid collecting tank bracket 18; the open flow collecting tank 1 is provided with a turbid liquid shunt pipe 8 and a clear liquid shunt pipe 9 and is positioned at one end below the open flow collecting tank 1, wherein the clear liquid shunt pipe 9 is positioned at the outermost end; the turbidity monitor 2 is arranged in the open-current liquid collecting tank 1 near the turbid liquid shunt pipe 8 and is connected with the PLC program control system 20 in parallel, so that the turbidity of the filtrate can be monitored on line, and the critical information of a turbidity set value can be transmitted to the PLC program control system 20 in time; the turbid liquid shunt valve 3 is arranged on the turbid liquid shunt pipe 8 and is communicated with the PLC program control system 20 in parallel; under the control of the PLC program control system 20, the open-flow liquid collecting and clear-and-turbid separating device 14 has the functions of collecting open-flow liquid, monitoring the turbidity of the filtrate on line, and dynamically and automatically separating the clear-and-turbid filtrate. The clear and turbid shunting process comprises the following steps: under the control of the PLC program control system 20, (1) when the filtrate is turbid, the turbid liquid shunt valve 3 is automatically opened, and as the turbid liquid shunt pipe 8 is positioned at the upstream of the clear liquid shunt pipe 9, the turbid liquid naturally flows to a turbid liquid pool through the turbid liquid shunt pipe 8 at the upstream, and cannot flow out from the clear liquid shunt pipe 9 at the downstream; (2) when the filtrate is clear, the turbid liquid shunt valve 3 is automatically closed (namely the turbid liquid shunt pipe 8 is closed), and the clear liquid can only flow into the clear liquid pool from the clear liquid shunt pipe 9; specific embodiments are described in detail below.

The open flow liquid collecting tank 1 comprises a liquid collecting tank main body 6, a particle collecting chamber 7, a turbid liquid flow dividing pipe 8, a clear liquid flow dividing pipe 9, a sensor mounting plate 10 and a supporting tank rib 12, and is made of stainless steel materials; (1) the part design of the open-flow liquid collecting tank 1 is as follows: the liquid collecting tank main body 6 is provided with a tank opening outer folding edge 11, a turbid liquid distributing square opening and a clear liquid distributing round opening, the clear liquid distributing round opening is positioned below the right end of the liquid collecting tank main body 6, the turbid liquid distributing square opening is equal to the liquid collecting tank main body 6 in width and positioned beside the upstream of the clear liquid distributing round opening, and the length of the liquid collecting tank main body 6 corresponds to that of the filter press; the particle collection chamber 7 is a particle collection chamber 7 in the square filtrate, the length and width of the particle collection chamber are equal to the width of the liquid collecting tank main body 6, and the bottom surface of the collection chamber is provided with a turbid liquid distribution pipe hole; the clear liquid shunt pipe 9 and the turbid liquid shunt pipe 8 are arranged and are short pipe joints with flanges at one ends; the sensor mounting plate 10 is provided with a double sensor hoop mounting hole; the supporting groove ribs 12 are notch transverse supporting ribs, and the length of the supporting groove ribs is equal to the inner width of the liquid collecting groove main body 6; (2) assembly welding of the open-current liquid collecting tank 1: a plurality of supporting groove ribs 12 are welded on the upper part of the inner wall of the liquid collecting groove main body 6 at intervals and used for preventing the deformation of the opening of the liquid collecting groove; the upper edge of the particle collection chamber 7 is welded on a turbid liquid distribution square opening, and the turbid liquid distribution pipe 8 is welded on a turbid liquid distribution pipe hole on the bottom surface of the particle collection chamber 7; the clear liquid shunt pipe 9 is welded on the clear liquid shunt round mouth; the sensor mounting plate 10 is welded on the bottom of the open current liquid collecting tank 1 near the turbid liquid shunt pipe 8; thus forming the open-flow liquid collecting tank 1; the double open flow liquid collecting tanks 1 are respectively arranged on double liquid collecting tank brackets 18 at two sides of the filter press and cross the filter press and are positioned below open flow water nozzles 15 at two sides of an open flow filter plate 19 from head to tail; the clear liquid shunt pipe 9 is externally connected with a clear liquid tank pipeline; the filter liquid is used for open flow liquid receiving and flowing liquid containing, the filter liquid directly flows into the double open flow liquid collecting tank 1 from the open flow water nozzles 15 on the two sides of each filter plate 15 and the open (not hidden) hoses, and the clear and turbid filter liquid flows out through the clear liquid shunt pipe 9 or the turbid liquid shunt pipe 8 respectively.

The turbidity monitor 2 comprises a turbidity meter 5 and a turbidity sensor 4; the turbidity meter 5 is an MIK-PTU100 type turbidity display meter and can display the turbidity of the filtrate; the turbidity sensor 4 is an MIK-PTU-801 type turbidity sensor 4; the turbidity sensor 4 is communicated with the turbidity meter 5 to form a turbidity monitor 2; the sensor hoop 13 and the turbidity sensor 4 are arranged on a sensor mounting plate 10 in the open-current liquid collecting tank 1; the turbidity meter 5 is arranged in the PLC program control cabinet 20, and the turbidity sensor 4 is communicated with the PLC program control system 20; is used for automatically monitoring the turbidity of the filtrate on line and transmitting the critical information of the turbidity set value to the PLC program control system 20 in time.

The turbid liquid flow divider 3 is a DQVT pneumatic ball valve (the type meaning is D-low temperature, Q-ball valve, V-V valve core); the turbid liquid shunt valve 3 is arranged on a turbid liquid shunt pipe 8 of the open current collecting tank 1, is communicated with the PLC program control system 20 and is externally connected with a turbid liquid pool pipeline; under the control of the PLC program control system 20, the turbid liquid shunt valve 3 has the function of dynamically and automatically switching the turbid liquid shunt pipe 8 to shunt the clear and turbid filtrate; is used for automatically opening and closing the turbid liquid shunt pipe 8 so as to shunt the clear and turbid filtrate.

The single-valve control type liquid collecting and clear and turbid separating device 14 of the open-flow filter press provided by the utility model has the advantages of simple structure, on-line turbidity monitoring, single-valve control double-pipe separation, clear and turbid dynamic separation, low single-valve replacement frequency, low cost and convenient installation; a clear liquid shunt valve device is omitted, and the clear liquid shunt valve device still has the function of dynamically and automatically shunting clear and turbid filtrate by arranging an upstream turbid liquid shunt pipe orifice and a downstream clear liquid shunt pipe orifice which are adjacent; the technical problems that the double pneumatic ball valves respectively control the clear liquid shunt pipe 9 and the turbid liquid shunt pipe 8, the structure is complex, the production cost is high, the double valves are high in replacement frequency compared with a single valve, and shutdown and error production are caused due to replacement of the pneumatic ball valves are solved; reduce cost and improve effect.

Example 2

An automatic open-flow filter press, namely the automatic filter press that the liquid outlet mode is open flow and clear and turbid shunt, use the single valve control type liquid collecting and clear and turbid shunting device 14 (for short: open flow liquid collecting and clear and turbid shunting device) of the open-flow filter press provided by the utility model; the automatic open flow filter press mainly comprises a double-beam frame, a filter plate pressing mechanism, an open flow filter mechanism and a filter plate 19 thereof, an open flow liquid collecting and clear and turbid separating device 14, a turning plate liquid receiving mechanism, a pulling plate cake discharging mechanism, a filter cloth cleaning mechanism and a PLC program control system 20; the automatic filter press has the functions of automatically pressing a filter plate 19, automatically turning a plate to receive liquid, automatically shunting clear and turbid filtrate, automatically pulling the plate to discharge cakes and automatically cleaning filter cloth; the method is suitable for automatic solid-liquid separation of various suspension materials (namely a mixture of liquid and solid particles) which take filter cakes as products and need to recover valuable particles in turbid liquid. The utility model is manufactured according to the technical part shared by the prior art and the standard of China general machinery industry, namely 'Van-type and plate-and-frame filter press' T/CGMA0701 and 'Van-type and plate-and-frame filter press' T/CGMA 0702-2021.

The open-flow liquid collecting and clear and turbid separating device 14 comprises an open-flow liquid collecting tank 1, a turbidity monitor 2, a turbid liquid separating valve 3 and a liquid collecting tank bracket 18; the open flow collecting tank 1 is provided with a turbid liquid shunt pipe 8 and a clear liquid shunt pipe 9 and is positioned at the lower end of the bottom of the open flow collecting tank 1, wherein the clear liquid shunt pipe 9 is positioned at the outermost end, and the turbid liquid shunt pipe 8 is adjacent to the clear liquid shunt pipe 9 at the upstream; the four liquid collecting tank brackets 18 are respectively welded at the corresponding heights outside the double-head supporting leg 17 and the double-tail supporting leg 16; the double open flow liquid collecting and clear and turbid separating devices 14 are respectively arranged on double liquid collecting tank brackets 18 at two sides of the filter press and cross the filter press and are positioned below open flow water nozzles 15 at two sides of an open flow filter plate 19 from head to tail; the turbidity meter 5 is arranged in the PLC program control cabinet 20, and the turbidity sensor 4 is communicated with the PLC program control system 20; the turbid liquid flow divider valve 3 is communicated with the PLC program control system 20 and is externally connected with a turbid liquid pool pipeline; the clear liquid shunt tube 9 is externally connected with a clear liquid tank pipeline. Under the control of the PLC program control system 20, the open-flow liquid collecting and clear-and-turbid separating device 14 has the functions of collecting open-flow liquid, monitoring the turbidity of the filtrate on line, and dynamically and automatically separating the clear-and-turbid filtrate.

The low-pressure static filtering process of the automatic open-flow filter press comprises the following steps: the solid-liquid mixed material is input into each filter chamber through a feed hole by a feed pump, so that pressure difference is formed between two sides of the filter cloth, low-pressure static filtration is carried out, particles in the material are intercepted by the filter cloth to form a filter cake in the filter chamber, filtrate passes through the filter cloth and flows into the open flow liquid collecting and clear and turbid separating device from open flow water nozzles on two sides of the open flow filter plate, and the filter plate is pulled open to realize gravity cake discharging. The single complete operation cycle working process of the automatic open flow filter press comprises the following steps: the method comprises the following steps of filter plate compaction, low-pressure feeding, pressure-maintaining filtration, open-flow liquid collection and clear-turbidity shunt, washing and purification, squeezing and dewatering (including pressure maintaining), back blowing of materials (materials precipitated in a feed hole in a back blowing and pressure maintaining process), blow drying and purification, plate pulling and cake unloading, and filter cloth cleaning, wherein under the control of a PLC (programmable logic controller) system, a single operation cycle is automatically completed in a key mode; the intermittent reciprocating circulation work realizes the solid-liquid separation in batches.

The related working processes of the open-flow liquid collecting and clear-turbidity shunting device 14 are as follows: under the control of the PLC program control system 20, the open flow liquid collecting and separating device 14 and the open flow filtering mechanism work synchronously; (1) liquid receiving of the open-flow liquid collecting tank 1: the filtrate directly flows into the double open-flow liquid collecting tanks 1 from the open-flow water nozzles 15 on both sides of each filter plate 19 and the hoses are open (not hidden) respectively and flows to contain the liquid; the clear flow filtrate is turbid firstly and then is clear-the beginning, and part of valuable particles pass through the filter cloth pores along with the filtrate, so that the filtrate is turbid; later, a layer of particle accumulation (similar to accumulation medium) is gradually formed on the filter cloth, so that the particles are prevented from passing through, and the filtrate is gradually clear; (2) monitoring the turbidity of the filtrate on line: the turbidity sensor 2 monitors the turbidity of the filtrate on line and transmits the critical information of a turbidity set value to the PLC program control system 20 in time; (3) dynamic flow division of clear and turbid filtrate: (3.1) automatically opening the turbid liquid shunt valve 3 when the filtrate is turbid, wherein the turbid liquid is naturally flowed to a turbid liquid pool through the turbid liquid shunt pipe 8 at the upstream because the turbid liquid shunt pipe 8 is positioned at the upstream of the clear liquid shunt pipe 9, so that valuable particles in the turbid liquid can be recovered; (3.2) when the filtrate is clear, the turbid liquid shunt valve 3 is automatically closed (namely the turbid liquid shunt pipe 8 is closed), and the clear liquid can only flow to the clear liquid pool from the clear liquid shunt pipe 9.

This automatic open flow pressure filter uses the utility model discloses open flow pressure filter's single valve control formula collect liquid and clear turbid diverging device 14's beneficial effect is, through collecting liquid and clear turbid diverging device with current bivalve control formula, improve into single valve control formula collect liquid and clear turbid diverging device 14, left out a set of clear liquid flow divider valve device, through setting up adjacent upper reaches turbid liquid reposition of redundant personnel mouth of pipe and lower reaches clear liquid reposition of redundant personnel mouth of pipe, make it still have the function of clear turbid filtrating of dynamic automatic reposition of redundant personnel, solved the technical problem who uses the single valve control clear turbid double-barrelled reposition of redundant personnel that people thought can not realize always; the replacement frequency of the control valve is relatively reduced, and cost and efficiency are reduced.

Claims

1. A single valve control type liquid collecting and clear and turbid separating device of an open-flow filter press comprises an open-flow liquid collecting tank, a turbidity monitor, a turbid liquid separating valve and a liquid collecting tank bracket; the method is characterized in that: the open-flow liquid collecting tank comprises a liquid collecting tank main body, a particle collecting chamber, a turbid liquid flow dividing pipe, a clear liquid flow dividing pipe, a sensor mounting plate and a supporting tank rib, and is made of stainless steel materials; the device comprises a liquid collecting tank main body, a filter press and a filter press, wherein the liquid collecting tank main body is closed at two ends and is provided with a notch outer folding edge, a turbid liquid distribution square opening and a clear liquid distribution round opening; the turbidity monitor comprises a turbidity meter and a turbidity sensor; the turbid liquid flow dividing valve is a DQVT type pneumatic ball valve; the interconnection relationship is: a sensor hoop and a turbidity sensor are arranged on a sensor mounting plate in the open-current liquid collecting tank; the turbid liquid shunt valve is arranged on a turbid liquid shunt pipe of the open-flow liquid collecting tank to form an open-flow liquid collecting and clear-turbid shunting device main body; the four liquid collecting tank supports are respectively welded at the corresponding heights outside the double-head supporting leg and the double-tail supporting leg; the double open flow liquid collecting and clear and turbid separating devices are respectively arranged on double liquid collecting tank brackets at two sides of the filter press and cross the filter press and are positioned below open flow water nozzles at two sides of the open flow filter plate from head to tail; the turbidity meter is arranged in the PLC program control cabinet, and the turbidity sensor is communicated with the PLC program control system; the turbid liquid flow dividing valve is communicated with the PLC program control system and is externally connected with a turbid liquid pool pipeline; the clear liquid shunt tube is externally connected with a clear liquid tank pipeline; the single-valve control type liquid collecting and clear and turbid separating device has the functions of collecting liquid in open flow, monitoring filtrate turbidity on line and dynamically and automatically separating clear and turbid filtrate under the control of a PLC program control system.

2. The single-valve controlled type device for collecting liquid and separating turbid liquid of the open-flow filter press according to claim 1, wherein: the open-current liquid collecting tank is provided with a particle collecting chamber, the particle collecting chamber is a particle collecting chamber in the square filtrate, the length and the width of the particle collecting chamber are equal to the width of the liquid collecting tank main body, and the bottom surface of the collecting chamber is provided with a turbid liquid distributing pipe hole; the clear liquid shunt pipe and the turbid liquid shunt pipe are arranged and are short pipe joints with flanges at one ends; the arranged sensor mounting plate is provided with a double-sensor hoop mounting hole; the supporting groove ribs are notch transverse supporting ribs, and the length of the supporting groove ribs is equal to the inner width of the liquid collecting groove main body; a plurality of supporting groove ribs are welded on the upper part of the inner wall of the liquid collecting groove main body at intervals, so that the deformation of the opening of the liquid collecting groove can be prevented; the upper edge of the particle collection chamber is welded on a turbid liquid distribution square opening, and the turbid liquid distribution pipe is welded on a turbid liquid distribution pipe hole on the bottom surface of the collection chamber; the clear liquid shunt pipe is welded on the clear liquid shunt round opening; the sensor mounting plate is welded on the bottom of the open-flow liquid collecting tank near the turbid liquid shunt pipe.

3. The single-valve controlled type device for collecting liquid and separating turbid liquid of the open-flow filter press according to claim 1, wherein: the turbidity monitor is provided with a turbidity meter which is an MIK-PTU100 type turbidity display instrument; the set turbidity sensor is an MIK-PTU-801 turbidity sensor; the turbidity sensor is communicated with the turbidity meter to form a turbidity monitor.