CN216703467U

CN216703467U - Hot-melt plastic coated medium-sized filter press frame and corresponding medium-sized plastic anti-corrosion filter press

Info

Publication number: CN216703467U
Application number: CN202220079876.XU
Authority: CN
Inventors: 吕广清; 孟庆德; 孙进东; 梁颖
Original assignee: Jingjin Equipment Co Ltd
Current assignee: Jingjin Equipment Co Ltd
Priority date: 2022-01-13
Filing date: 2022-01-13
Publication date: 2022-06-10
Anticipated expiration: 2032-01-13

Abstract

The utility model relates to a hot-melt plastic coated medium-sized filter press frame and a corresponding medium-sized plastic anti-corrosion filter press, wherein the innovative scheme has the key points that: the method is characterized in that a hot melt plastic coating process is implemented on the surface of each part (comprising a tailstock with a leg machine, a push plate, a thrust plate with legs and a main beam of the frame) of a medium-sized carbon steel frame, namely a layer of epoxy propane and polyolefin copolymer hot melt plastic anticorrosive coating with the thickness of 2mm-3mm is coated to form a hot melt plastic coated frame, and the hot melt plastic coated frame has the performances of bearing of a common carbon steel framework and corrosion resistance and heat resistance (80 ℃) of hot melt plastic coating; meanwhile, the structural design of the tailstock and the push plate of the rack machine is optimized, so that the mechanism is more suitable for a single-cylinder driving type press plate mechanism. The medium-sized plastic anti-corrosion filter press uses the hot melt plastic coating frame to solve the technical problems that a common carbon steel surface corrosion-resistant paint coating frame is easy to rust and has short service life, a full stainless steel frame material is expensive and has high production cost, a stainless steel coating frame coating process is complicated and has low production efficiency, and the frame surface has complex shape and difficult corner coating; quality improvement, cost reduction, high yield and efficiency improvement.

Description

Hot-melt plastic coated medium-sized filter press frame and corresponding medium-sized plastic anti-corrosion filter press

Technical Field

The utility model belongs to the technical field of medium-sized anti-corrosion filter presses (patent classification number B01D 25/12), and relates to a hot melt plastic coating frame.

Background

The filter press is a pressurized filtering device with multiple filtering chambers operated intermittently; the anti-corrosion filter press is a filter press with anti-corrosion performance; a medium-sized antiseptic filter press, which is an antiseptic filter press having an effective filtering area of 63-750m, a filter plate size of 2000mm × 2000mm or less or a whole machine length of 13m or less (less than 45 feet container); the filter mainly comprises an anti-corrosion frame, a filter plate pressing mechanism (namely a single-cylinder pressing plate mechanism), an anti-corrosion filtering mechanism, an anti-corrosion liquid receiving mechanism, a plate pulling and cake discharging mechanism, a filter cloth cleaning mechanism and a PLC program control system; the filter plate pressing mechanism of the medium-sized filter press is a single-oil-cylinder driving type filter plate pressing mechanism; the method is suitable for solid-liquid separation of various corrosive suspension materials (namely a mixture of liquid and solid particles).

The anticorrosion frame is a basic bearing part of the filter press and comprises a machine tailstock, a front supporting leg, a rear supporting leg, double main beams, a filter plate guide rail, a thrust plate and a pressing plate, wherein the main beams are arranged on two sides of the frame, and the thrust plate and the pressing plate are arranged at two ends of the frame. The machine tailstock and the pressing plate structure of the medium-sized anti-corrosion rack are suitable for a single-oil-cylinder driving type filter plate pressing mechanism. The thrust plate welds on double preceding landing leg, and the tail seat welds on double back landing leg, and machine head thrust plate and machine tail seat are connected to two girder fixity, form a non-detachable integral frame main part. In order to meet the requirements of load bearing and corrosion prevention, the corrosion prevention machine frame generally has two corrosion prevention measures: (1) in a weak corrosive environment, common carbon steel materials are mostly adopted, corrosion-resistant paint is coated on the surface of the steel, and a small number of the steel is coated by stainless steel; (2) in a strong corrosive environment, stainless steel is mostly adopted for coating, and a few stainless steel materials are adopted.

The existing anticorrosion machine frame has the following defects: (1) the corrosion-resistant paint coating is easy to fall off due to collision, rust stains are generated for a long time, and the service life is short; the machine frame is rusted, the machine is shut down and the production is mistaken when the painting is needed to be repaired on site, and the smell of the paint is bad, so that the environmental sanitation is affected; (2) the stainless steel coats the machine frame, the coating process (including plate shearing, bending, coating, welding and welding line polishing) is complicated, the production efficiency is low, the corner coating with the complicated surface shape of the machine frame is difficult, and the coating quality is difficult to ensure; (3) the all stainless steel frame consumes a large amount of valuable resources, has expensive materials and higher production cost, and is not beneficial to saving the valuable resources, reducing cost and improving efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the existing anticorrosive frame, solve the technical problems that the common carbon steel surface corrosion-resistant paint coating frame is easy to rust and has short service life, the all-stainless steel frame material is expensive and has high production cost, the stainless steel coating frame coating process is complicated and has low production efficiency, and the frame surface has complex shape and corners and is difficult to coat, and provides a hot-melt plastic coated medium-sized filter press frame and a corresponding medium-sized plastic anticorrosive filter press; the corresponding plastic anti-corrosion filter press, which is a medium-sized plastic anti-corrosion filter press with a medium-sized filter press frame coated by hot melt plastic, is abbreviated for short because the number of characters of the patent name is limited.

The utility model solves the problems of the prior art and adopts the innovative technical scheme that: a hot melt plastic coated medium-sized filter press frame (hereinafter referred to as hot melt plastic coated frame) is a basic bearing part of an anti-corrosion filter press, and the key points of the overall technical scheme are as follows: compared with the prior art, the innovative overall structure has the prominent substantive characteristics that: the hot melt plastic coating process is implemented on the surfaces of all parts of the medium-sized carbon steel frame, namely a layer of hot melt plastic anticorrosive coating of epoxypropane and polyolefin copolymer with the thickness of 2-3mm is coated to form the hot melt plastic coated medium-sized filter press frame, which comprises the medium-sized carbon steel frame and the hot melt plastic anticorrosive coating, has the properties of bearing of a common carbon steel framework and corrosion resistance and heat resistance (80 ℃) of the hot melt plastic coating, and has the advantages of good and cheap inner and outer surfaces, low cost of the inner carbon steel framework and high corrosion resistance of the outer hot melt plastic coating; meanwhile, the tail seat and push plate structure of the frame machine is optimized, so that the tail seat and push plate structure is more suitable for a single-oil-cylinder driving type filter plate pressing mechanism; therefore, the technical problems that a common carbon steel surface corrosion-resistant paint coating machine frame is easy to rust and short in service life, a full stainless steel machine frame material is expensive, the production cost is high, a stainless steel coating machine frame coating process is complicated, the production efficiency is low, and the corner coating of the surface shape of the machine frame is complex are solved.

The specific design scheme of the utility model is as follows: (1) the medium-sized carbon steel frame, namely the carbon steel frame adapted to the single-cylinder driving type filter plate pressing mechanism, comprises a tailstock with a leg machine, a push plate (namely a pressing plate), a thrust plate with legs and a frame main beam; the tail seat of the leg-carrying machine comprises a tail seat and tail support legs, wherein the tail seat is provided with a main beam positioning groove and an oil cylinder mounting hole, the tail support legs are higher than the head support legs and ensure that the double main beams are in a horizontal state after being mounted, and the tail seat is welded on the double tail support legs to form the leg-carrying machine tail seat; the push plate is provided with a push plate guide support, a piston rod connecting disc and a connecting screw hole thereof, and the push plate guide support is symmetrically arranged at the middle upper parts of the two sides of the push plate main body (equal to the height of the filter plate support handle); the thrust plate with the legs comprises a thrust plate and machine head legs, the thrust plate is provided with a main beam positioning groove and fluid pipe flanges, and the thrust plate is welded on the double machine head legs to form the thrust plate with the legs; the main beam of the frame is provided with a filter plate slideway (namely a filter plate guide rail), a main beam tensile hook and a main beam mounting hole; (2) the hot-melt plastic anticorrosive coating is a hot-melt plastic propylene oxide and vinyl hydrocarbon copolymer anticorrosive coating with the thickness of 2-3 mm.

The connection relation of the main parts of the utility model is as follows: (1) coating the parts of the frame by hot melt plastic: the frame parts refer to the frame parts before assembly after welding, and comprise a tailstock of the legged machine, a push plate (namely a compression plate), a thrust plate with legs and a main beam of the frame; performing a hot melt plastic coating process on the surfaces of all components of the medium-sized carbon steel frame, namely coating a 2-3mm thick propylene oxide and polyolefin copolymer hot melt plastic anticorrosive layer to form hot melt plastic coated frame components comprising a carbon steel framework layer and a hot melt plastic anticorrosive layer; the hot melt molding is to bake the surface of a carbon steel frame part after cleaning by using natural gas, wherein the baking temperature is 170 ℃; when the temperature of the carbon steel frame part is stabilized at 160 ℃ below 150 ℃, uniformly spreading powdered propylene oxide and polyolefin copolymer on the surface of the carbon steel frame part, wherein the thickness of the plastic lining layer is 2-3mm, and freely forming a hot-melt plastic anticorrosive layer; the carbon steel frame with complex surface shape is particularly convenient for hot melt molding (dusting lining molding); (2) assembling and final assembling of the hot melt plastic coating machine frame: (2.1) assembling the hot melt plastic coating rack: two sides of the frame are provided with double main beams, and two ends of the frame are provided with a leg thrust plate and a leg machine tailstock; the double-main-beam fixed connection machine head thrust plate and the main-beam positioning groove of the machine tail seat, the push plate is supported and arranged on a filter plate slideway of the double main beams by means of the guide of the push plate, and a hot melt plastic coating frame is formed; (2.2) final assembly of the hot melt plastic coating machine frame: the push plate is connected with a piston rod of the single driving oil cylinder and can move back and forth along with the extension of the piston rod; the various fluid pipe flanges abut respective external pipes.

The utility model also provides a medium-sized plastic anti-corrosion filter press, which uses the medium-sized filter press frame coated by the hot melt plastic provided by the utility model; the medium-sized plastic anti-corrosion filter press mainly comprises a hot melt plastic coating frame, a filter plate pressing mechanism (namely a single-cylinder pressing plate mechanism), an anti-corrosion filtering mechanism, an anti-corrosion liquid receiving mechanism, a plate pulling and cake discharging mechanism, a filter cloth cleaning mechanism and a PLC program control system; the filter plate pressing mechanism of the medium-sized filter press is a single-oil-cylinder driving type filter plate pressing mechanism; the hot melt plastic coating machine frame has the performances of corrosion resistance and heat resistance (80 ℃); the medium-sized plastic anticorrosive filter press has the functions of automatically pressing a filter plate, automatically turning a plate to receive liquid, automatically pulling the plate to unload cakes and automatically cleaning filter cloth; the method is suitable for solid-liquid separation of various corrosive suspension materials (namely a mixture of liquid and solid particles).

The hot-melt plastic-coated medium-sized filter press frame and the corresponding medium-sized plastic anti-corrosion filter press provided by the utility model have the obvious advantages of proper frame structure, rigid inside and beautiful outside, low frame plastic lining cost, convenience for hot-melt molding of a complex body, strong corrosion resistance and heat resistance, durability and reliable quality; the beneficial effects are as follows: (1) by optimizing the structural design of the tailstock and the push plate of the frame machine, the mechanism is more suitable for a single-oil-cylinder driving type filter plate pressing mechanism; (2) the medium-sized filter press frame coated with hot melt plastic is formed on the surface of a medium-sized carbon steel frame part by hot melt plastic, and the medium-sized filter press frame coated with stainless steel is replaced, so that the manufacturing cost is effectively reduced, the production efficiency is improved, and the product quality is guaranteed; quality improvement, cost reduction, high yield and efficiency improvement.

Drawings

FIG. 1 is a front view of a hot melt plastic coated medium filter press frame according to the present invention.

FIG. 2 is a top view of a hot melt plastic coated medium filter press frame according to the present invention.

FIG. 3 is a schematic view of a legged tailstock of a hot melt plastic coated frame of a medium size filter press according to the present invention.

FIG. 4 is a schematic view of a push plate (i.e., a hold-down plate) of a hot melt plastic coated medium filter press frame according to the present invention.

FIG. 5 is a schematic view of a hot-melt plastic coated thrust plate with legs of a frame of a medium-sized filter press according to the present invention.

FIG. 6 is a schematic view of a frame main beam of a hot melt plastic coated medium filter press frame according to the present invention.

FIG. 7 is a schematic view of a carbon steel skeleton layer coated by a hot-melt plastic anticorrosive coating of a hot-melt plastic coated medium-sized filter press frame according to the present invention.

FIG. 8 is a schematic view of the assembly of the hot melt plastic coated medium size filter press frame and the corresponding medium size plastic anti-corrosive filter press.

Reference numerals: the method comprises the following steps of 1-a machine tailstock, 2-a push plate (namely a compaction plate), 3-a thrust plate, 4-a frame main beam (namely a main beam), 5-a main beam positioning groove, 6-an oil cylinder mounting hole, 7-a machine tail supporting leg, 8-a push plate guiding support, 9-a piston rod connecting disc, 10-a machine head supporting leg, 11-a filter plate slideway (namely a filter plate guide rail), 12-a main beam tensile hook, 13-a hot-melt plastic anti-corrosion layer, 14-a carbon steel framework layer, 15-a hot-melt plastic coated medium-sized filter press frame (namely a hot-melt plastic coated frame or the utility model), 16-an anti-corrosion filtering mechanism (comprising an anti-corrosion filter plate), 17-a single-driving oil cylinder and 18-a piston rod.

Detailed Description

The technical solution of the embodiment of the present invention will be described below with reference to the drawings of the frame of the hot-melt plastic-coated medium-sized filter press and the embodiment of the corresponding medium-sized plastic anti-corrosion filter press, and the described embodiment is only a part of the preferred embodiment of the present invention, but not all embodiments. All other embodiments, such as a hot-melt plastic coated frame with the same lining plastic manner and similar structure, of a carbon steel frame, which are made by those skilled in the art without any inventive property, belong to the protection scope of the present invention.

Example 1

A hot melt plastic coated medium-sized filter press frame 15 (short for: hot melt plastic coated frame) is a basic bearing part of an anti-corrosion filter press, and the key points of the innovative overall implementation scheme are as follows: the surface of each component of the medium-sized carbon steel frame is coated with a hot-melt plastic coating process, namely a layer of hot-melt plastic anticorrosive coating 13 of propylene oxide and alkene copolymer with the thickness of 2mm-3mm is coated to form a hot-melt plastic coated medium-sized filter press frame 15, which comprises the medium-sized carbon steel frame and the hot-melt plastic anticorrosive coating 13, has the performance of bearing of a common carbon steel framework and corrosion resistance and heat resistance (80 ℃) of hot-melt plastic coating, has the advantages of rigid inside and beautiful outside, low cost of the internal carbon steel framework and high corrosion resistance of the external hot-melt plastic coating; meanwhile, the structure of the tailstock 1 and the push plate 2 of the frame machine is optimized, so that the frame machine is more suitable for a single-oil-cylinder driving type filter plate pressing mechanism; the hot melt plastic copolymer is a recognized most ideal novel anticorrosive material; the hot melt plastic coating frame 15 is used for replacing a stainless steel coating frame, so that the corrosion and heat resistance is strong, the environment with strong corrosion is adapted, the surface is smooth, the durability is realized, and the quality is reliable; specific embodiments are described in detail below.

The medium-sized carbon steel frame, namely the carbon steel frame adapted to the single-cylinder driving type filter plate pressing mechanism, comprises a tailstock with a leg machine, a push plate 2 (namely a pressing plate), a thrust plate with legs and a frame main beam 4; (1) the tail seat of the leg-carrying machine comprises a machine tail seat 1 and machine tail supporting legs 7, wherein the machine tail seat 1 is provided with a main beam positioning groove 5 and an oil cylinder mounting hole 6, the machine tail supporting legs 7 are higher than the machine head supporting legs 10 and ensure that a double main beam 4 is in a horizontal state after being mounted, and the machine tail seat 1 is welded on the double machine tail supporting legs 7 to form the tail seat of the leg-carrying machine; used for supporting the main beam 4 of the frame and installing the single driving oil cylinder 17; (2) the push plate 2 is provided with a push plate guide support 8, a piston rod connecting disc 9 and a connecting screw hole thereof, and the push plate guide support 8 is symmetrically arranged at the middle upper parts of the two sides of the push plate main body (equal to the height of the filter plate support handle); used for connecting the cylinder piston rod 18, compressing and loosening the multiple anticorrosion filter plates 16; (3) the thrust plate with the legs comprises a thrust plate 3 and machine head legs 10, wherein the thrust plate 3 is provided with a main beam positioning groove 5 and flanges of various fluid pipes, and the thrust plate 3 is welded on the double machine head legs 10 to form the thrust plate with the legs; the anti-corrosion filter plate 16 is used for supporting the main beam 4 of the frame and preventing the anti-corrosion filter plate from being pressed and derailed; (4) the frame main beam 4 is provided with a filter plate slideway 11 (namely a filter plate guide rail), a main beam tensile hook 12 and a main beam mounting hole; used for sliding and supporting the anti-corrosion filter plate 16 and the push plate 2; the whole frame is used for bearing and mounting various parts of the medium-sized anti-corrosion filter press of the single-oil-cylinder driving type filter plate pressing mechanism.

The hot melt plastic anticorrosive coating 13 is a hot melt plastic propylene oxide and polyolefin copolymer anticorrosive coating with the thickness of 2-3mm on the surface of the carbon steel frame part; the carbon steel frame parts refer to frame parts before assembly after welding, and comprise a tailstock of a leg-equipped machine, a push plate 2 (namely a compression plate), a thrust plate with legs and a frame main beam 4; the process for coating the parts of the rack by hot melt plastic comprises the following steps: (1) sand blasting and rust removing: using sand blasting equipment to perform sand blasting rust removal on the parts of the frame, so that the surface rust removal grade reaches Sa3 grade of GB/T8923; (2) blowing off the surface: blowing dust on the surface of the frame part after derusting by using clean compressed gas; (3) baking and heating: baking the surface of the cleaned rack part by using natural gas, wherein the baking temperature is 170 ℃; (4) hot melting lining plastic: when the temperature of the frame part is stabilized at 150-160 ℃, uniformly spreading powdered propylene oxide and polyolefin copolymer on the surface of the frame part, wherein the thickness of the plastic lining layer is 2-3mm, and freely forming a hot-melt plastic anticorrosive layer 13, namely forming the plastic lining frame part (comprising a carbon steel framework layer 14 and the hot-melt plastic anticorrosive layer 13); (5) electric leakage detection: after the plastic-lined frame parts are naturally cooled, 10000V electric spark is used for detecting whether electric leakage exists; if the leakage occurs, repairing the defect and detecting again; if no electricity is leaked, the plastic lined rack parts are qualified. The hot melting plastic (dusting lining plastic) is particularly convenient on the surface of a complex machine frame.

Assembling and final assembling of the hot melt plastic coating frame 15: (1) assembling the hot melt plastic coating frame 15: two sides of the frame are provided with double main beams 4, and two ends of the frame are provided with leg thrust plates and a leg machine tailstock; the double-main-beam 4 is fixedly connected with a machine head thrust plate 3 and a main-beam positioning groove 5 of a machine tail seat 1, and a push plate 2 is arranged on a filter plate slideway 11 of the double-main-beam 4 by virtue of a push plate guide support 8 to form a hot melt plastic coating frame 15; (2) and (3) final assembly of the hot melt plastic coating frame 15: the push plate 2 is connected with a piston rod 18 of a single driving oil cylinder 17 and can move back and forth along with the expansion of the piston rod 18; the various fluid pipe flanges abut respective external pipes.

The hot melt plastic coated medium-sized filter press frame 15 provided by the utility model has the advantages of proper frame structure, rigid inside and beautiful outside, low frame plastic lining cost, convenience for hot melt molding of a complex body, strong corrosion resistance and heat resistance, durability and reliable quality; the technical problems that a common carbon steel surface corrosion-resistant paint coating rack is easy to rust and short in service life, a full stainless steel rack material is expensive and high in production cost, a stainless steel coating rack coating process is complicated and low in production efficiency, and the rack surface is complex in shape and corner coating is difficult are solved; meanwhile, the structural design of the tailstock 1 and the push plate 2 of the frame machine is optimized, so that the frame machine is more suitable for a single-oil-cylinder driving type filter plate pressing mechanism; the hot melt plastic coating frame 15 is used for replacing a stainless steel coating frame, so that the manufacturing cost is effectively reduced, the production efficiency is improved, and the product quality is guaranteed; quality improvement, cost reduction, high yield and efficiency improvement.

Example 2

A medium-sized plastic anti-corrosion filter press (called as a medium-sized anti-corrosion filter press for short) uses a medium-sized filter press frame 15 (called as a hot-melt plastic coating frame for short) coated by hot-melt plastic provided by the utility model; the medium-sized plastic anti-corrosion filter press mainly comprises a hot melt plastic coating frame 15, a filter plate pressing mechanism (namely a single-cylinder pressing plate mechanism), an anti-corrosion filtering mechanism 16, an anti-corrosion liquid receiving mechanism, a plate pulling and cake discharging mechanism, a filter cloth cleaning mechanism and a PLC program control system; the hot melt plastic cladding frame comprises a tailstock of a leg-provided machine, a push plate 2 (namely a compression plate), a thrust plate with legs and a main beam 4 of the frame, and has the performances of corrosion resistance and heat resistance (80 ℃); the thrust plate 3 is welded on the double-head support leg 10 to form a thrust plate with legs; the machine tail seat 1 is welded on the double-machine-tail support leg 7 to form a machine tail seat with legs; the filter plate pressing mechanism of the medium-sized filter press is a single-oil-cylinder driving type filter plate pressing mechanism; the medium-sized anti-corrosion filter press has the functions of automatically pressing a filter plate, automatically turning a plate and receiving liquid, automatically pulling the plate and unloading cakes and automatically cleaning filter cloth; the method is suitable for solid-liquid separation of various corrosive suspension materials (namely a mixture of liquid and solid particles). The utility model shares the technical part with the prior art, according to the current standard of China' Van filter press and plate-and-frame filter press part 1: type and basic parameters section 2: technical Condition section 3: filter plate (manufactured by JB/T4333).

And (3) final assembly of the medium-sized anticorrosive filter press: (1) assembling and final assembling of the hot melt plastic coating frame 15: (2.1) assembling the hot melt plastic coating frame 15: two sides of the frame are provided with double main beams 4, and two ends of the frame are provided with leg thrust plates and a leg machine tailstock; the double-main-beam 4 is fixedly connected with a machine head thrust plate 3 and a main-beam positioning groove 5 of a machine tail seat 1, and a push plate 2 is arranged on a filter plate slideway 11 of the double-main-beam 4 by virtue of a push plate guide support 8 to form a hot melt plastic coating frame 15; (2.2) final assembly of the hot melt plastic coating frame 15: the push plate 2 is connected with a piston rod 18 of a single driving oil cylinder 17 and can move back and forth along with the expansion of the piston rod 18; the various fluid pipe flanges abut respective external pipes. (2) The filter plate pressing mechanism comprises: the single driving oil cylinder 17 is arranged on the machine tail seat 1, the piston rod 18 is connected with the pressure strip 2, and the hydraulic pump station is arranged on the ground of the machine tail; (3) anticorrosive liquid mechanism that connects: the anticorrosion liquid receiving mechanism is integrally arranged on four machine legs below the filter press and is positioned below the anticorrosion filtering mechanism 16; (4) plate pulling and cake unloading mechanism: the double-trolley guide rails of the plate pulling and cake discharging mechanism are arranged at two sides of a double-frame main beam 4, the driving motor is arranged at the head or tail (preferably arranged at the head), the plate pulling trolley is arranged on the double-trolley guide rails at two sides of the frame main beam 4, and the two-stage transmission chain is connected with the driving device and the plate pulling trolley; (5) the anticorrosion filter mechanism 16: the double-filter-plate supporting handle supports the filter plates on the filter plate slide ways 11 of the main beam 4 of the frame, the anticorrosive filter plates 16 are pressed tightly by a hydraulic oil cylinder, and a plurality of concave parts (hollow parts) of the adjacent anticorrosive filter plates 16 coated with filter cloth form a plurality of filter chambers; the multi-filter chamber is added with an anti-corrosion filter plate at the head and the tail and external pipelines for the inlet and the outlet of each fluid, thus forming an anti-corrosion filter mechanism 16; (6) and (3) cleaning a filter cloth mechanism: the double elevated rails are horizontally arranged on a thrust plate 3 and a tail seat 1 of the filter press (positioned on two sides of a main beam 4 of the double elevated rails, above an anti-corrosion filtering mechanism 16 and leading to the head and the tail of the filter press) by utilizing front and rear elevated supporting legs, and the cloth washing trolley is arranged on the elevated rails; (7) PLC programmable system: the PLC program control cabinet is arranged on the ground of the tail and is communicated with and controls the hydraulic oil cylinder, the pull plate trolley, the cloth washing trolley and the liquid receiving turning plate to work through signal wires.

The low-pressure static filtering process of the medium-sized anticorrosive filter press comprises the following steps: the material is pressurized by a feeding pump and is input into the filtering chamber through a feeding hole to carry out low-pressure static filtering, the filter cloth intercepts particles in the material to form a filter cake in the filtering chamber, the filtrate passes through the filter cloth and flows out of a liquid outlet hole of the filtering chamber, and the filter plate 16 is pulled open to realize gravity cake unloading. The single complete operation cycle working process of the medium-sized anticorrosive filter press comprises the following steps: under the control of a PLC system, the filter plate 16 is pressed, fed and filtered (including plate connection liquid), washed and purified, materials are blown back, the materials are dried and purified, a plate is pulled, cakes are unloaded (including plate opening and cake falling), filter cloth is cleaned, and the operation is automatically finished by one key; the intermittent reciprocating circulation work realizes the solid-liquid separation in batches.

The medium-sized plastic anti-corrosion filter press provided by the utility model has the beneficial effects that: (1) by optimizing the structural design of the tailstock 1 and the push plate 2 of the frame machine, the device is more suitable for a single-oil-cylinder driving type filter plate pressing mechanism; (2) the medium-sized filter press frame 16 coated with the hot melt plastic is formed by hot melt plastic on the surface of a medium-sized carbon steel frame part to replace a stainless steel coated medium-sized filter press frame, so that the manufacturing cost is effectively reduced, the production efficiency is improved, and the product quality is guaranteed; quality improvement, cost reduction, high yield and efficiency improvement.

Claims

1. A hot-melt plastic coated medium-sized filter press frame comprises a medium-sized carbon steel frame and a hot-melt plastic anticorrosive coating; the method is characterized in that: the medium-sized carbon steel frame, namely the carbon steel frame adapted to the single-cylinder driving type filter plate pressing mechanism, comprises a tailstock with a leg machine, a push plate, a thrust plate with legs and a frame main beam; the hot melt plastic anticorrosive coating is a hot melt plastic propylene oxide and polyolefin copolymer anticorrosive coating with the thickness of 2-3 mm; the method comprises the following steps of (1) performing a hot melt plastic coating process on the surfaces of all components of a medium-sized carbon steel frame, namely coating a layer of propylene oxide and alkene copolymer hot melt plastic anticorrosive layer to form hot melt plastic coated frame components comprising a carbon steel framework layer and a hot melt plastic anticorrosive layer; the double-frame main beam is fixedly connected with a machine head thrust plate and a main beam positioning groove of a machine tail seat, and the push plate is supported and arranged on a filter plate slide way of the double-frame main beam by means of the guide of the push plate to form a hot melt plastic coated medium-sized filter press frame, so that the double-frame main beam has the performances of corrosion resistance and heat resistance.

2. The hot melt plastic coated medium size filter press frame of claim 1, wherein: the middle-sized carbon steel frame is provided with the leg-equipped machine tailstock which comprises a machine tailstock and machine tail supporting legs, wherein the machine tail seat is provided with a main beam positioning groove and an oil cylinder mounting hole, the machine tail supporting legs are higher than the machine head supporting legs and ensure that the double main beams are in a horizontal state after being mounted, and the machine tail seat is welded on the double machine tail supporting legs to form the leg-equipped machine tailstock; the push plate is provided with a push plate guide support, a piston rod connecting disc and a connecting screw hole thereof, and the push plate guide support is symmetrically arranged at the middle upper parts of the two sides of the push plate main body; the thrust plate with the legs comprises a thrust plate and machine head legs, wherein the thrust plate is provided with a main beam positioning groove and flanges of various fluid pipes, and the thrust plate is welded on the double machine head legs to form the thrust plate with the legs; the main beam of the frame is provided with a filter plate slideway, a main beam tensile hook and a main beam mounting hole.

3. A medium-sized plastic anti-corrosion filter press comprises a hot-melt plastic coating frame, a filter plate pressing mechanism, an anti-corrosion filter mechanism, an anti-corrosion liquid receiving mechanism, a plate pulling and cake discharging mechanism, a filter cloth cleaning mechanism and a PLC program control system; the method is characterized in that: the hot melt plastic coating frame is the hot melt plastic coated medium-sized filter press frame of any one of claims 1-2; the medium-sized anti-corrosion filter press has the functions of automatically pressing a filter plate, automatically turning a plate and receiving liquid, automatically pulling the plate and unloading cakes and automatically cleaning filter cloth.