Filter residue collecting device for wet production of feed-grade calcium hydrophosphate

Abstract

The invention discloses a feed-grade calcium hydrophosphate wet production filter residue collection device, and relates to the technical field of filter residue collection, the feed-grade calcium hydrophosphate wet production filter residue collection device comprises a treatment cylinder, a first-stage collection unit, a second-stage collection unit and a liquid storage box, the treatment cylinder is used for installing and fixing the first-stage collection unit and the second-stage collection unit, the first-stage collection unit is used for separating reaction liquid and collecting coarse filter residues, and the second-stage collection unit is used for collecting coarse filter residues; the secondary collection unit is used for separating reaction liquid and fine filter residues, the liquid storage tank is used for storing the reaction liquid, and when the reaction liquid enters the primary collection unit in the treatment barrel, the primary collection unit is used for separating and collecting the reaction liquid and coarse filter residues in the reaction liquid; after primary treatment, the reaction liquid enters the secondary collection unit for separation and collection of the reaction liquid and fine filter residues, so that the separation purity of the filter residues is improved, subsequent complicated secondary treatment is avoided, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of filter residue collection, in particular to a filter residue collection device for wet production of feed-grade calcium hydrogen phosphate. Background Art

[0002] Feed grade calcium hydrogen phosphate plays an extremely important role in animal husbandry. It is a key supplementary source of phosphorus required for animal growth and development, and plays an indispensable role in improving the nutritional value of feed, promoting animal bone development and maintaining normal physiological functions. In its wet production process, a series of complex chemical reactions are involved, such as acid hydrolysis and neutralization of phosphate ore.

[0003] After phosphate rock reacts with sulfuric acid to generate phosphoric acid, it is then neutralized by lime milk to obtain calcium hydrogen phosphate products. However, a large amount of filter residue is produced in this process. The composition of these filter residues is complex and diverse, including unreacted phosphate rock powder, calcium sulfate crystals generated by the reaction, fluoride precipitation, heavy metal impurities and various other impurities.

[0004] Traditional filter residue collection devices and processes face many challenges when dealing with these filter residues. First, there is a lack of effective layered filtration mechanisms for filter residues of different particle sizes. Since the particle size of filter residues ranges greatly from larger unreacted phosphate ore particles to tiny heavy metal precipitates and fluoride particles, existing filtration equipment can often only perform a single overall filtration and cannot accurately separate according to particle size differences. This results in a low separation purity of the filter residue, and subsequent complex secondary or even multiple treatments are required to further extract valuable components or safely dispose of waste.

[0005] Secondly, most traditional filtration methods are static filtration, that is, the filter medium is fixed during the filtration process. This static filtration method has serious drawbacks. During the filtration process, the filter residue will quickly accumulate on the surface of the filter medium to form a filter cake. As the thickness of the filter cake increases, the filtration resistance rises sharply and the filtration speed drops significantly, resulting in low production efficiency. Moreover, the presence of the filter cake will cause some fine particles in the filter residue to be entrained in it, making it difficult to fully separate, further reducing the separation purity of the filter residue. Summary of the invention

[0006] The object of the present invention is to provide a feed-grade calcium hydrogen phosphate wet production filter residue collection device to solve the problems raised in the prior art.

[0007] To achieve the above object, the present invention provides the following technical solutions: The feed-grade calcium hydrogen phosphate wet production filter residue collection device comprises a treatment cylinder, a primary collection unit, a secondary collection unit and a liquid storage tank, wherein the treatment cylinder is placed on a horizontal basis, the primary collection unit is fixedly mounted inside one end of the treatment cylinder away from the horizontal basis, the primary collection unit has the function of separating and collecting coarse filter residues, the primary collection unit is fixedly connected to the secondary collection unit, the secondary collection unit is fixedly mounted inside one end of the treatment cylinder close to the horizontal basis, the secondary collection unit has the function of separating and collecting fine filter residues and controlling the opening and closing of a receiving port of the primary collection unit, and the liquid storage tank is placed on a horizontal basis, and the liquid storage tank is connected to the primary collection unit via a pipeline.

[0008] The processing cylinder is used to install and fix the primary collecting unit and the secondary collecting unit. The primary collecting unit is used to separate the reaction liquid and collect the coarse filter residue, and the secondary collecting unit is used to separate the reaction liquid from the fine filter residue. The liquid storage tank is used to store the reaction liquid. When the reaction liquid enters the primary collecting unit inside the processing cylinder, the reaction liquid and the coarse filter residue in the reaction liquid are separated and collected by the primary collecting unit. After the primary treatment, the reaction liquid enters the secondary collecting unit to separate and collect the reaction liquid and the fine filter residue, thereby improving the separation purity of the filter residue, avoiding the need for subsequent complex secondary treatment, and improving work efficiency.

[0009] Furthermore, a feed port and an exhaust port are provided at one end of the treatment cylinder away from the horizontal foundation, a water filter hole is provided at one end of the treatment cylinder close to the horizontal foundation, and a pressure detector is provided on the treatment cylinder.

[0010] The feed port is used for conveying the reaction liquid, the water filter hole is used for filtering out the reaction liquid after secondary treatment, and when the pressure detector detects that the pressure inside the treatment cylinder is too high, the pressure is released through the exhaust port to protect the normal operation of the equipment.

[0011] Furthermore, the primary collecting unit comprises a driving motor, a screw, a pressure plate, a guide rod, a rotating plate, a telescopic spring, a sliding cylinder, an armature, a conductive block and a telescopic push rod. The fixed end of the driving motor is fixedly mounted on the processing cylinder through a connecting rod, the output end of the driving motor passes through the pressure plate and is fixedly connected to the screw, the middle part of the pressure plate is threadedly connected to the screw, one end of the guide rod is fixedly connected to the inside of the processing cylinder away from the horizontal end, and the other end is fixedly connected to the coarse filter plate, the guide rod is slidably connected to the pressure plate, the rotating plate is slidably connected to the slide groove through a support rod, and the The telescopic spring consists of a telescopic spring 1 and a telescopic spring 2. One end of the telescopic spring 1 is fixedly connected to the pressure plate, and the other end extends into the slide cylinder and is fixedly connected to the armature. One end of the telescopic spring 2 abuts the armature, and the other end is fixedly connected to the conductive block. The slide cylinder is fixedly mounted on the rotating plate, and the conductive block is fixedly mounted on the inner surface of the slide cylinder near one end of the rotating plate. The fixed end of the telescopic push rod is fixedly mounted on the electromagnet 1. A memory spring is arranged inside the telescopic push rod. The armature is electrically connected to the electromagnet 1, and the armature is electrically connected to the electromagnet 2.

[0012] The filter press is fixedly connected to the filter press, and the filter press is connected to the filter press by the spring.

[0013] When the reaction liquid enters the first filter cloth, the controller controls the driving motor to start, thereby driving the screw to rotate, so that the pressure plate moves downward along the guide rod to squeeze out the reaction liquid in the first filter cloth. When the remaining filter residue is on the coarse filter plate, on the one hand, the pressure plate pushes the telescopic spring 1 to drive the armature to slide downward in the slide cylinder and squeeze the telescopic spring 2. When the armature moves to contact with the conductive block, the current of the controller is transmitted to the conductive block through the armature, and finally transmitted to the electromagnet 1 and the electromagnet 2. At this time, the electromagnet 1 and the electromagnet 2 are energized with the same polarity, so that the electromagnet Iron one pushes electromagnet two to slide downward along the discharge barrel, thereby driving the coarse filter plate to stretch and tilt. At this time, the pressure sensor of the scraper detects whether the current pressure value reaches the preset value. If the pressure value is too small, the controller passes a large current to the memory spring through the telescopic push rod. The memory spring expands and stretches after receiving the current, so that the telescopic push rod drives the scraper to move downward and contact the filter residue on the coarse filter plate. When the screw rotates, the scraper scrapes off the coarse filter residue attached to the coarse filter plate and slides downward along the inclined surface into the blocking plate on the discharge barrel, preparing for the collection of the coarse filter residue.

[0014] Furthermore, the secondary collecting unit includes a telescopic rotating motor, a fine filter plate, a traction rope, a small ball, a spiral coil, a push switch, an electrode plate, an electric telescopic plate, a multi-section elastic push rod, a material blocking barrel, a second filter cloth, an elastic rope, a fixed plate, an electromagnet three, a guide barrel and a magnetic block. The fixed end of the telescopic rotating motor is fixedly installed on the end of the discharge barrel close to the horizontal foundation through a connecting rod, the output end of the telescopic rotating motor is fixedly connected to the fine filter plate, the fixed plate is connected to the small ball through a traction rope, a conductive plate is provided on the inner circle of the fine filter plate, the fine filter plate is slidably connected to the discharge barrel, the electrode plate is electrically connected to the electromagnet three, the electromagnet three is fixedly installed on the telescopic end of the electric telescopic plate away from the horizontal foundation, the magnetic block is slidably installed in the guide barrel through a spring, and the guide barrel is fixedly installed on the telescopic end of the electric telescopic plate The ball is slidably connected to the spiral coil at the end, and the spiral coil is fixedly mounted on the inner surface of the processing cylinder. There are two push switches, which are respectively fixedly mounted on both ends of the spiral coil. The push switch is electrically connected to the electric telescopic plate, and the electrode plate is fixedly mounted on the discharge cylinder, and the electric telescopic plate is mounted under the coarse filter plate. The fixed end of the electric telescopic plate is fixedly mounted on the outer surface of the discharge cylinder, and the fixed end of the multi-section elastic push rod is fixedly mounted on the coarse filter plate close to the horizontal foundation. The material blocking cylinder is fixedly mounted on the fixed plate close to the horizontal foundation. There are two fine filter plates, and the fine filter plate is connected to the fixed plate through a torsion spring. One end of the second filter cloth is rotatably connected to the rotating plate through a slip ring, and the other end is fixedly connected to the fixed plate. One end of the elastic rope is fixedly connected to the fixed plate, and the other end is fixedly connected to the blocking plate.

[0015] When the controller controls the telescopic rotation motor to start, it drives the fixed plate and the fine filter plate to rotate and makes the fine filter plate slide upward along the discharge barrel to squeeze out the reaction liquid in the second filter cloth. At this time, the fixed plate rotates. On the one hand, it drives the small ball to slide along the gap of the spiral coil under the transmission action of the traction rope. When the small ball hits the push switch above, the electric telescopic plate is controlled to retract, and the multi-section elastic push rod loses its thrust and extends downward, thereby pushing the fine filter plate to rotate downward and opening the channel, so that the fine filter residue remaining on the fine filter plate after filtration falls along the blocking barrel to the bottom of the processing barrel, thereby realizing the collection of the fine filter residue. On the other hand, when the fixed plate rotates upward, while the blocking plate is driven to rotate under the transmission action of the elastic rope, the tension of the elastic rope becomes smaller, the buffer spring loses its tension, and under the action of its own restoring force, the blocking plate is pulled downward to flip over, so that the coarse filter residue remaining on the blocking plate The filter residue slides downward along the inside of the discharge barrel to the external coarse filter residue collection box, thereby collecting the coarse filter residue. At the same time, when the fine filter plate moves upward and the conductive plate of the fine filter plate contacts the electrode plate, the current of the controller is transmitted to the electromagnet three through the conductive plate and the electrode plate. The electromagnet three is energized with the same polarity as the magnetic block and repel each other. The magnetic block moves upward and hits the coarse filter plate, thereby knocking and vibrating the coarse filter plate, increasing the falling speed of the coarse filter residue while preventing the coarse filter residue from clogging the filter holes and affecting the filtering effect. After the separate separation and collection of coarse and fine filter residues are completed, the controller controls the telescopic rotating motor to rotate and contract in the opposite direction, driving the small ball to rotate downward along the spiral coil and contact the push switch below. At this time, the electric telescopic plate extends, squeezing the multi-section elastic push rod to retract again. At this time, the fine filter plate is reset under the action of the torsion spring, which is convenient for the next collection of filter residue.

[0016] Furthermore, the multi-section elastic push rod is provided with an inclined surface near the fixed end of the electric telescopic plate.

[0017] In order to facilitate the return of the multi-section elastic push rod to the retracted state when the electric telescopic plate is reset, the multi-section elastic push rod is released from the squeezing action on the fine filter plate, so that the fine filter plate is restored to a horizontal state, which is convenient for the next filter residue collection action.

[0018] Furthermore, the directions of the currents flowing through the two adjacent groups of electrode plates are opposite.

[0019] In order to make the fine filter plate slide up and down in the discharge cylinder, when the conductive plate on the fine filter plate contacts the electrode plate, currents in different directions are transmitted to the electromagnet three, so that the electromagnet three and the magnetic block periodically present the same and opposite polarities, so that the magnetic block jumps in the guide cylinder and hits the coarse filter plate, thereby avoiding blockage of the filter holes and increasing the falling speed of the coarse filter residue to improve work efficiency.

[0020] Furthermore, a filter screen is arranged in the liquid storage tank.

[0021] In order to filter out large impurities such as leaves in the reaction liquid once, it is necessary to avoid blockage in the transportation of the reaction liquid, which will affect the separation efficiency of coarse and fine filter residues.

[0022] Furthermore, a pressure sensor is provided at the bottom of the scraper near the screw, the inner wall of the scraper near the coarse filter plate is deformable, and magnetorheological fluid is contained inside the scraper.

[0023] In order to make the flexible chamber at the bottom of the scraper always fit with the coarse filter residue on the coarse filter plate when the coarse filter plate is tilted, when the controller detects that the pressure sensor reaches a preset value, a magnetic field is introduced into the magnetorheological fluid to change the magnetorheological fluid from fluid to solid, so as to facilitate the scraping of the coarse filter residue. On the other hand, the magnetorheological fluid in the fluid state will adjust itself according to the different heights of the coarse filter residue surface, so that the scraper and the coarse filter plate are always in contact. After the magnetic field is introduced, the magnetorheological fluid becomes solid, and under the pressure of the coarse filter plate, a tight fitting surface is formed between the deformable inner wall of the scraper and the coarse filter plate, thereby avoiding the inability of the traditional fixed rectangular scraper to scrape the coarse filter residue at the edge and the depression, thereby improving the scraping effect of the coarse filter residue.

[0024] Furthermore, the coarse filter plate is a deformable plate, and the fine filter plate is a rigid plate.

[0025] The deformable coarse filter plate is used to form a concave surface when the electromagnet moves downward. For example, a flexible steel wire mesh is deformed under the action of tension at one end to form a concave surface, which is convenient for scraping and collecting the coarse filter residue. The rigid fine filter plate is used to facilitate the multi-section elastic push rod to push the two fine filter plates to rotate downward, open the channel with the material blocking barrel, and make the fine filter residue on the fine filter plate fall quickly, which is convenient for collecting the fine filter residue.

[0026] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, when the armature moves to contact with the conductive block, electromagnet 1 and electromagnet 2 are energized to the same polarity, so that electromagnet 1 pushes electromagnet 2 to slide downward along the discharge barrel, thereby driving the coarse filter plate to stretch and tilt. At this time, the pressure sensor of the scraper detects whether the current pressure value reaches the preset value. If not, the controller increases or decreases the current to the memory spring in the telescopic push rod. The memory spring expands, stretches or contracts upon receiving the current, thereby causing the telescopic push rod to drive the scraper to contact the filter residue on the coarse filter plate. When the screw rotates, the scraper scrapes off the coarse filter residue attached to the coarse filter plate and slides downward along the inclined surface into the blocking plate on the discharge barrel.

[0027] When the filter presses the on-screen button, the filter press release button retracts the filter press release button, which in turn pushes the filter press release button to release the filter press release button, so that the filter press release button is released and the filter press release button is retracted.

[0028] 3. The present invention uses the magnetorheological fluid arranged under the scraper. When the controller detects that the pressure sensor reaches a preset value, a magnetic field is passed into the magnetorheological fluid, so that the magnetorheological fluid changes from a fluid to a solid, which is convenient for scraping off the coarse filter residue. On the other hand, the magnetorheological fluid in the fluid state will adjust itself according to the different heights of the coarse filter residue surface, so that the scraper and the coarse filter residue are always in contact, avoiding the inability of the traditional fixed rectangular scraper to scrape off the coarse filter residue at the edge and the depression, thereby improving the scraping effect of the coarse filter residue. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the overall appearance structure of a filter residue collection device for wet production of feed-grade calcium hydrogen phosphate according to the present invention; Figure 2 It is a schematic diagram of the top view of a filter residue collection device for wet production of feed-grade calcium hydrogen phosphate according to the present invention; Figure 3 The invention provides a filter residue collecting device for wet production of feed-grade calcium hydrogen phosphate Figure 2 Schematic diagram of the cross-section structure at AA in the middle; Figure 4 The invention provides a filter residue collecting device for wet production of feed-grade calcium hydrogen phosphate Figure 3 The structural schematic diagram of the local enlarged view at B in the middle; Figure 5 The invention provides a filter residue collecting device for wet production of feed-grade calcium hydrogen phosphate Figure 3 The structural schematic diagram of the partial enlarged view at C in the middle; Figure 6 It is a schematic diagram of the internal structure of a slide cylinder of a filter residue collection device for wet production of feed-grade calcium hydrogen phosphate according to the present invention; Figure 7It is a schematic diagram of the internal structure of a treatment cylinder of a filter residue collection device for wet production of feed-grade calcium hydrogen phosphate according to the present invention; Figure 8 The invention provides a filter residue collecting device for wet production of feed-grade calcium hydrogen phosphate Figure 7 The structural schematic diagram of the local enlarged view at D in the middle; Fig. 9 It is a schematic diagram of the installation position structure of the spiral coil and the push switch of a filter residue collection device for wet production of feed-grade calcium hydrogen phosphate according to the present invention; Fig.10 It is a schematic diagram of the installation position structure of the blocking plate and the buffer spring of a filter residue collection device for wet production of feed-grade calcium hydrogen phosphate according to the present invention; Fig.11 This is a schematic diagram of the internal structure of the first filter cloth of a filter residue collection device for wet production of feed-grade calcium hydrogen phosphate according to the present invention; Fig.12 It is a schematic diagram of the internal structure of the second filter cloth of a filter residue collection device for wet production of feed-grade calcium hydrogen phosphate according to the present invention; Fig.13 The present invention is a schematic diagram of the internal structure of a guide cylinder of a filter residue collection device for wet production of feed-grade calcium hydrogen phosphate.

[0030] In the figure: 1, treatment cylinder; 11, feed port; 12, exhaust port; 13, water filter hole; 14, pressure detector; 2, primary collection unit; 21, drive motor; 22, screw; 23, pressure plate; 24, guide rod; 25, rotating plate; 26, telescopic spring; 261, telescopic spring 1; 262, telescopic spring 2; 27, slide cylinder; 28, armature; 29, conductive block; 210, telescopic push rod; 211, scraper; 212, electromagnet 1; 213, electromagnet 2; 214, coarse filter plate; 215, discharge cylinder; 216 , buffer spring; 217, blocking plate; 218, first filter cloth; 219, support rod; 220, slide; 3, secondary collection unit; 31, telescopic rotating motor; 32, fine filter plate; 33, traction rope; 34, small ball; 35, spiral coil; 36, push switch; 37, electrode plate; 38, electric telescopic plate; 39, multi-section elastic push rod; 310, material blocking cylinder; 311, second filter cloth; 312, elastic rope; 313, fixed plate; 314, electromagnet three; 315, guide cylinder; 316, magnetic block; 4, liquid storage tank. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example: Figure 1-Figure 13 As shown, the present invention provides a technical solution: like Figure 1 , 2 As shown in , 7, a filter residue collection device for wet production of feed-grade calcium hydrogen phosphate includes a treatment cylinder 1, a primary collection unit 2, a secondary collection unit 3 and a liquid storage tank 4, the treatment cylinder 1 is placed on a horizontal basis, the primary collection unit 2 is fixedly installed inside the end of the treatment cylinder 1 away from the horizontal basis, the primary collection unit 2 has the function of separating and collecting coarse filter residues, the primary collection unit 2 is fixedly connected to the secondary collection unit 3, the secondary collection unit 3 is fixedly installed inside the end of the treatment cylinder 1 close to the horizontal basis, the secondary collection unit 3 has the function of separating and collecting fine filter residues and controlling the opening and closing of the receiving port of the primary collection unit 2, the liquid storage tank 4 is placed on a horizontal basis, and the liquid storage tank 4 is connected to the primary collection unit 2 through a pipeline.

[0033] The treatment cylinder 1 is used to install and fix the primary collecting unit 2 and the secondary collecting unit 3. The primary collecting unit 2 is used to separate the reaction liquid and collect the coarse filter residue. The secondary collecting unit 3 is used to separate the reaction liquid and the fine filter residue. The liquid storage tank 4 is used to store the reaction liquid. When the reaction liquid enters the primary collecting unit 2 inside the treatment cylinder 1, the reaction liquid and the coarse filter residue in the reaction liquid are separated and collected by the primary collecting unit 2. After the primary treatment, the reaction liquid enters the secondary collecting unit 3 to separate and collect the reaction liquid and the fine filter residue, thereby improving the separation purity of the filter residue, avoiding the need for subsequent complex secondary treatment, and improving work efficiency.

[0034] like Figure 2 , 7 As shown, a feed port 11 and an exhaust port 12 are provided at one end of the treatment tube 1 away from the horizontal foundation, a water filter hole 13 is provided at one end of the treatment tube 1 close to the horizontal foundation, and a pressure detector 14 is arranged on the treatment tube 1.

[0035] The feed port 11 is used for conveying the reaction liquid, the filter hole 13 is used for filtering out the reaction liquid after secondary treatment, and when the pressure detector 14 detects that the internal pressure of the treatment cylinder 1 is too high, the pressure is released through the exhaust port 12 to protect the normal operation of the equipment.

[0036] like Figure 3 , 4As shown in , 5, 6, 7, and 11, the primary collecting unit 2 includes a driving motor 21, a screw 22, a pressure plate 23, a guide rod 24, a rotating plate 25, a telescopic spring 26, a slide cylinder 27, an armature 28, a conductive block 29 and a telescopic push rod 210. The fixed end of the driving motor 21 is fixedly mounted on the processing cylinder 1 through a connecting rod, the output end of the driving motor 21 passes through the pressure plate 23 and is fixedly connected to the screw 22, the middle part of the pressure plate 23 is threadedly connected to the screw 22, one end of the guide rod 24 is fixedly connected to the inside of the processing cylinder 1 away from the horizontal end, and the other end is fixedly connected to the coarse filter plate 214, the guide rod 24 is slidably connected to the pressure plate 23, and the rotating plate 25 slides with the slide groove 220 through the support rod 219. The telescopic spring 26 is connected by a telescopic spring 1 261 and a telescopic spring 262. One end of the telescopic spring 1 261 is fixedly connected to the pressure plate 23, and the other end extends into the slide 27 and is fixedly connected to the armature 28. One end of the telescopic spring 262 abuts against the armature 28, and the other end is fixedly connected to the conductive block 29. The slide 27 is fixedly mounted on the rotating plate 25, and the conductive block 29 is fixedly mounted on the inner surface of one end of the slide 27 close to the rotating plate 25. The fixed end of the telescopic push rod 210 is fixedly mounted on the electromagnet 1 212. A memory spring is arranged inside the telescopic push rod 210. The armature 28 is electrically connected to the electromagnet 1 212, and the armature 28 is electrically connected to the electromagnet 2 213.

[0037] like Figure 3 , 4 As shown in , 5, 8, 10, 11, and 12, the primary collecting unit 2 also includes a scraper 211, an electromagnet 1 212, an electromagnet 213, a coarse filter plate 214, a discharge barrel 215, a buffer spring 216, a blocking plate 217, a first filter cloth 218, a support rod 219, and a slide trough 220. The scraper 211 is fixedly connected to the telescopic end of the telescopic push rod 210, the electromagnet 1 212 is fixedly installed on the end of the screw 22 close to the rotating plate 25, the electromagnet 213 is fixedly connected to the coarse filter plate 214, and the coarse filter plate 214 is connected to the rotating plate 25 through a torsion spring. In the vertical direction, the discharge barrel 215 is fixedly installed on the processing barrel. 1. One end of the discharge barrel 215 extends out of the processing barrel 1 and is conductively connected to the external coarse filter residue collection box. The second electromagnet 213 is slidably installed on the outer surface of the discharge barrel 215. One end of the buffer spring 216 is fixedly connected to the blocking plate 217, and the other end is slidably connected to the groove opened on the inner wall of the discharge barrel 215. The blocking plate 217 is sleeved on the annular ring in the annular groove opened on the inner wall of the discharge barrel 215. One end of the first filter cloth 218 is fixedly connected to the pressing plate 23, and the other end is fixedly connected to the rotating plate 25. The slide groove 220 is arranged on the inner wall of the processing barrel 1 on the same horizontal axis as the rotating plate 25. The discharge barrel 215 is fixedly connected to the secondary collection unit 3.

[0038] When the reaction liquid enters the first filter cloth 218, the controller controls the driving motor 21 to start, thereby driving the screw 22 to rotate, so that the pressing plate 23 moves downward along the guide rod 24 to squeeze out the reaction liquid in the first filter cloth 218. When the remaining filter residue is on the coarse filter plate 214, on the one hand, the pressing plate 23 pushes the telescopic spring 1 261 to drive the armature 28 to slide downward in the slide cylinder 27 and squeeze the telescopic spring 2 262. When the armature 28 moves to contact with the conductive block 29, the current of the controller is transmitted to the conductive block 29 through the armature 28, and finally transmitted to the electromagnet 1 212 and the electromagnet 2 213. At this time, the electromagnet 1 212 and the electromagnet 2 213 are energized with the same polarity. Thereby, electromagnet 1 212 pushes electromagnet 2 213 to slide downward along the discharge barrel 215, thereby driving the coarse filter plate 214 to stretch and tilt. At this time, the pressure sensor of the scraper plate 211 detects whether the current pressure value reaches the preset value. If the pressure value is too small, the controller passes a large current to the memory spring in the telescopic push rod 210. The memory spring expands and stretches after receiving the current, thereby causing the telescopic push rod 210 to drive the scraper plate 211 to move downward and contact the filter residue on the coarse filter plate 214. When the screw 22 rotates, the scraper plate 211 scrapes off the coarse filter residue attached to the coarse filter plate 214 and slides downward along the inclined surface into the blocking plate 217 on the discharge barrel 215, preparing for the collection of the coarse filter residue.

[0039] like Figure 3 , 4, 6, 9, 10, 11, 12, 13, the secondary collecting unit 3 includes a telescopic rotating motor 31, a fine filter plate 32, a traction rope 33, a small ball 34, a spiral coil 35, a push switch 36, an electrode plate 37, an electric telescopic plate 38, a multi-section elastic push rod 39, a material blocking cylinder 310, a second filter cloth 311, an elastic rope 312, a fixed plate 313, an electromagnet 314, a guide cylinder 315 and a magnetic block 316. The fixed end of the telescopic rotating motor 31 is fixedly installed by a connecting rod At one end of the discharge barrel 215 close to the horizontal foundation, the output end of the telescopic rotating motor 31 is fixedly connected to the fine filter plate 32, the fixed plate 313 is connected to the small ball 34 through the traction rope 33, the inner ring of the fine filter plate 32 is provided with a conductive plate, the fine filter plate 32 is slidably connected to the discharge barrel 215, the electrode plate 37 is electrically connected to the electromagnet three 314, the electromagnet three 314 is fixedly installed on the end of the telescopic end of the electric telescopic plate 38 away from the horizontal foundation, the magnetic block 316 is slidably installed in the guide cylinder 315 through a spring, the guide cylinder 315 is fixedly installed at the telescopic end of the electric telescopic plate 38, the small ball 34 is slidably connected to the spiral coil 35, the spiral coil 35 is fixedly installed on the inner surface of the processing barrel 1, there are two push switches 36, which are respectively fixedly installed at both ends of the spiral coil 35, the push switch 36 is electrically connected to the electric telescopic plate 38, the electrode plate 37 is fixedly installed on the discharge barrel 215, the electric telescopic plate 38 is installed below the coarse filter plate 214, and the fixed end of the electric telescopic plate 38 is fixedly installed on the discharge barrel 215. On the outer surface, the fixed end of the multi-section elastic push rod 39 is fixedly installed on the coarse filter plate 214 near the horizontal foundation, the material blocking cylinder 310 is fixedly installed on the fixed plate 313 near the horizontal foundation, there are two fine filter plates 32, the fine filter plate 32 is connected to the fixed plate 313 through a torsion spring, one end of the second filter cloth 311 is rotatably connected to the rotating plate 25 through a slip ring, and the other end is fixedly connected to the fixed plate 313, one end of the elastic rope 312 is fixedly connected to the fixed plate 313, and the other end is fixedly connected to the blocking plate 217.

[0040] When the controller controls the telescopic rotating motor 31 to start, the fixed plate 313 and the fine filter plate 32 are driven to rotate, and the fine filter plate 32 is made to slide upward along the discharge barrel 215 to squeeze out the reaction liquid in the second filter cloth 311. At this time, the fixed plate 313 rotates, and on the one hand, the ball 34 is driven to slide along the gap of the spiral coil 35 under the transmission action of the traction rope 33. When the ball 34 hits the push switch 36 above, the electric telescopic plate 38 is controlled to retract, and after the multi-section elastic push rod 39 loses thrust, The filter element 316 is pressed against the filter element 324 and is pushed downward, thereby pushing the filter plate 32 to rotate downward, opening the channel, so that the fine filter residue remaining after filtering on the filter plate 32 falls along the blocking cylinder 310 to the bottom of the processing cylinder 1, thereby realizing the collection of the fine filter residue. On the other hand, when the fixing plate 313 rotates upward, the blocking plate 217 is driven to rotate under the transmission action of the elastic rope 312, and the tension of the elastic rope 312 becomes smaller, the buffer spring 216 loses its tension, and under the action of its own restoring force, the blocking plate 217 is pulled downward to flip over, so that the material residue staying in the The coarse filter residue on the blocking plate 217 slides down along the inside of the discharge barrel 215 to the external coarse filter residue collection box, thereby collecting the coarse filter residue. At the same time, when the fine filter plate 32 moves upward and the conductive plate of the fine filter plate 32 contacts the electrode plate 37, the current of the controller is transmitted to the electromagnet 314 through the conductive plate and the electrode plate 37. The electromagnet 314 is energized and has the same polarity as the magnetic block 316, repelling each other. The magnetic block 316 moves upward and hits the coarse filter plate 214, thereby The filter element 32 is then pulled back by the spring 32 and the filter slag 36 is pulled back by the spring 33. The filter element 32 is then pulled back by the spring 33 and the filter slag 36 is pulled back by the spring 33. The filter element 32 is then pulled back by the spring 33 and the filter slag 36 is pulled back by the spring 33.

[0041] like Figure 4 As shown, the multi-section elastic push rod 39 is provided with an inclined surface near the fixed end of the electric telescopic plate 38.

[0042] In order to facilitate the restoration of the multi-section elastic push rod 39 to the retracted state when the electric telescopic plate 38 is reset, the multi-section elastic push rod 39 is released from the squeezing action on the fine filter plate 32, so that the fine filter plate 32 is restored to a horizontal state, which is convenient for the next filter residue collection action.

[0043] like Fig.12 As shown, the directions of the currents flowing into two adjacent groups of electrode plates 37 are opposite.

[0044] In order to make the fine filter plate 32 slide up and down in the discharge cylinder 215, when the conductive plate on the fine filter plate 32 contacts the electrode plate 37, currents in different directions are transmitted to the electromagnet three 314, so that the electromagnet three 314 and the magnetic block 316 periodically present the same and opposite polarities, so that the magnetic block 316 jumps in the guide cylinder 315 and hits the coarse filter plate 214, thereby avoiding clogging of the filter holes and increasing the falling speed of the coarse filter residue to improve work efficiency.

[0045] like Figure 2 As shown, a filter screen is arranged in the liquid storage tank 4.

[0046] In order to filter out large impurities such as leaves in the reaction liquid once, it is necessary to avoid blockage in the transportation of the reaction liquid, which will affect the separation efficiency of coarse and fine filter residues.

[0047] like Fig.11 As shown, a pressure sensor is provided at the bottom of the scraper 211 close to the screw 22 , the inner wall of the scraper 211 close to the coarse filter plate 214 is deformable, and magnetorheological fluid is contained inside the scraper 211 .

[0048] In order to make the flexible chamber at the bottom of the scraper 211 always fit the coarse filter residue on the coarse filter plate 214 when the coarse filter plate 214 is tilted, when the controller detects that the pressure sensor reaches a preset value, a magnetic field is introduced into the magnetorheological fluid to change the magnetorheological fluid from fluid to solid, so as to facilitate the scraping of the coarse filter residue. On the other hand, the magnetorheological fluid in the fluid state will adjust itself according to the different heights of the coarse filter residue surface, so that the scraper 211 and the coarse filter plate 214 are always in contact. After the magnetic field is introduced, the magnetorheological fluid becomes solid, and under the pressure of the coarse filter plate 214, a tight fitting surface is formed between the deformable inner wall of the scraper 211 and the coarse filter plate 214, thereby avoiding the inability of the traditional fixed rectangular scraper 211 to scrape the coarse filter residue at the edge and the depression, thereby improving the scraping effect of the coarse filter residue.

[0049] like Fig.11 , 12 As shown, the coarse filter plate 214 is a deformable plate, and the fine filter plate 32 is a rigid plate.

[0050] The deformable coarse filter plate 214 is designed to facilitate the coarse filter plate 214 to form a concave surface during the downward movement of the electromagnet 213, such as a flexible wire mesh, which is deformed under the action of tension at one end to form a concave surface, which is convenient for scraping and collecting the coarse filter residue. The rigid fine filter plate 32 is designed to facilitate the multi-section elastic push rod 39 to push the two fine filter plates 32 to rotate downward, open the channel with the material blocking barrel 310, and allow the fine filter residue on the fine filter plate 32 to fall quickly, thereby facilitating the collection of the fine filter residue.

[0051] Working principle of the present invention: When the reaction liquid enters the first filter cloth 218, the controller controls the driving motor 21 to start, thereby driving the screw 22 to rotate, so that the pressing plate 23 moves downward along the guide rod 24 to squeeze out the reaction liquid in the first filter cloth 218. When the remaining filter residue is on the coarse filter plate 214, on the one hand, the pressing plate 23 pushes the telescopic spring 1 261 to drive the armature 28 to slide downward in the slide cylinder 27 and squeeze the telescopic spring 2 262. When the armature 28 moves to contact with the conductive block 29, the current of the controller is transmitted to the conductive block 29 through the armature 28, and finally transmitted to the electromagnet 1 212 and the electromagnet 2 213. At this time, the electromagnet 1 212 and the electromagnet 2 213 are energized with the same polarity. Thereby, electromagnet 1 212 pushes electromagnet 2 213 to slide downward along the discharge barrel 215, thereby driving the coarse filter plate 214 to stretch and tilt. At this time, the pressure sensor of the scraper plate 211 detects whether the current pressure value reaches the preset value. If the pressure value is too small, the controller passes a large current to the memory spring in the telescopic push rod 210. The memory spring expands and stretches after receiving the current, thereby causing the telescopic push rod 210 to drive the scraper plate 211 to move downward and contact the filter residue on the coarse filter plate 214. When the screw 22 rotates, the scraper plate 211 scrapes off the coarse filter residue attached to the coarse filter plate 214 and slides downward along the inclined surface into the blocking plate 217 on the discharge barrel 215, preparing for the collection of the coarse filter residue.

[0052] When the controller controls the telescopic rotating motor 31 to start, the fixed plate 313 and the fine filter plate 32 are driven to rotate, and the fine filter plate 32 is made to slide upward along the discharge barrel 215 to squeeze out the reaction liquid in the second filter cloth 311. At this time, the fixed plate 313 rotates, and on the one hand, the ball 34 is driven to slide along the gap of the spiral coil 35 under the transmission action of the traction rope 33. When the ball 34 hits the push switch 36 above, the electric telescopic plate 38 is controlled to retract, and after the multi-section elastic push rod 39 loses thrust, The filter element 316 is pressed against the filter element 324 and is pushed downward, thereby pushing the filter plate 32 to rotate downward, opening the channel, so that the fine filter residue remaining after filtering on the filter plate 32 falls along the blocking cylinder 310 to the bottom of the processing cylinder 1, thereby realizing the collection of the fine filter residue. On the other hand, when the fixing plate 313 rotates upward, the blocking plate 217 is driven to rotate under the transmission action of the elastic rope 312, and the tension of the elastic rope 312 becomes smaller, the buffer spring 216 loses its tension, and under the action of its own restoring force, the blocking plate 217 is pulled downward to flip over, so that the material residue staying in the The coarse filter residue on the blocking plate 217 slides down along the inside of the discharge barrel 215 to the external coarse filter residue collection box, thereby collecting the coarse filter residue. At the same time, when the fine filter plate 32 moves upward and the conductive plate of the fine filter plate 32 contacts the electrode plate 37, the current of the controller is transmitted to the electromagnet 314 through the conductive plate and the electrode plate 37. The electromagnet 314 is energized and has the same polarity as the magnetic block 316, repelling each other. The magnetic block 316 moves upward and hits the coarse filter plate 214, thereby The filter element 32 is then pulled back by the spring 32 and the filter slag 36 is pulled back by the spring 33. The filter element 32 is then pulled back by the spring 33 and the filter slag 36 is pulled back by the spring 33. The filter element 32 is then pulled back by the spring 33 and the filter slag 36 is pulled back by the spring 33.

[0053] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A filter residue collection device for wet production of feed-grade calcium hydrogen phosphate, characterized in that: A filter residue collection device for wet production of feed-grade calcium hydrogen phosphate comprises a treatment cylinder (1), a primary collection unit (2), a secondary collection unit (3) and a liquid storage tank (4); the treatment cylinder (1) is placed on a horizontal foundation; the primary collection unit (2) is fixedly mounted inside an end of the treatment cylinder (1) away from the horizontal foundation; the primary collection unit (2) has the function of separating and collecting coarse filter residues; the primary collection unit (2) is fixedly connected to the secondary collection unit (3); the secondary collection unit (3) is fixedly mounted inside an end of the treatment cylinder (1) close to the horizontal foundation; the secondary collection unit (3) has the function of separating and collecting fine filter residues and controlling the opening and closing of a material receiving port of the primary collection unit (2); the liquid storage tank (4) is placed on a horizontal foundation; the liquid storage tank (4) is connected to the primary collection unit (2) via a pipeline.

2. A filter residue collecting device for wet production of feed-grade calcium hydrogen phosphate according to claim 1, characterized in that: The end of the treatment cylinder (1) away from the horizontal foundation is provided with a feed port (11) and an exhaust port (12), the end of the treatment cylinder (1) close to the horizontal foundation is provided with a water filter hole (13), and the treatment cylinder (1) is provided with a pressure detector (14).

3. A filter residue collecting device for wet production of feed-grade calcium hydrogen phosphate according to claim 1, characterized in that: The primary collecting unit (2) comprises a driving motor (21), a screw (22), a pressure plate (23), a guide rod (24), a rotating plate (25), a telescopic spring (26), a slide cylinder (27), an armature (28), a conductive block (29) and a telescopic push rod (210). The fixed end of the driving motor (21) is fixedly mounted on the processing cylinder (1) via a connecting rod. The output end of the driving motor (21) passes through the pressure plate (23) and is fixedly connected to the screw (22). The middle part of the pressure plate (23) is threadedly connected to the screw (22). One end of the guiding rod (24) is fixedly connected to the inside of the processing cylinder (1) away from the horizontal end, and the other end is fixedly connected to the coarse filter plate (214). The guiding rod (24) is slidably connected to the pressure plate (23). The rotating plate (25) is slidably connected to the slide groove (220) via a support rod (219). The telescopic spring (26) is composed of a telescopic spring 1 (261) and a telescopic spring 2 (262). One end of the telescopic spring 1 (261) is fixedly connected to the pressure plate (23), and the other end extends into the slide cylinder (27) and is fixedly connected to the armature (28). One end of the telescopic spring 2 (262) abuts against the armature (28), and the other end is fixedly connected to the conductive block (29). The slide cylinder (27) is fixedly mounted on the rotating plate (25), and the conductive block (29) is fixedly mounted on the inner surface of one end of the slide cylinder (27) close to the rotating plate (25). The fixed end of the telescopic push rod (210) is fixedly mounted on the electromagnet 1 (212). A memory spring is arranged inside the telescopic push rod (210). The armature (28) is electrically connected to the electromagnet 1 (212), and the armature (28) is electrically connected to the electromagnet 2 (213).

4. A filter residue collecting device for wet production of feed-grade calcium hydrogen phosphate according to claim 3, characterized in that: The primary collecting unit (2) further comprises a scraper (211), an electromagnet 1 (212), an electromagnet 2 (213), a coarse filter plate (214), a discharging barrel (215), a buffer spring (216), a blocking plate (217), a first filter cloth (218), a support rod (219) and a slide groove (220); the scraper (211) is fixedly connected to the telescopic end of the telescopic push rod (210); the electromagnet 1 (212) is fixedly mounted on the end of the screw rod (22) close to the rotating plate (25); the electromagnet 2 (213) is fixedly connected to the coarse filter plate (214); the coarse filter plate (214) is connected to the rotating plate (25) via a torsion spring; in the vertical direction, the discharging barrel (215) is fixedly mounted on the processing barrel (1); One end of the discharge barrel (215) extends out of the processing barrel (1) and is conductively connected to an external coarse filter residue collection box. The second electromagnet (213) is slidably mounted on the outer surface of the discharge barrel (215). One end of the buffer spring (216) is fixedly connected to the blocking plate (217), and the other end is slidably connected to a groove opened on the inner wall of the discharge barrel (215). The blocking plate (217) is sleeved on an annular ring in an annular groove opened on the inner wall of the discharge barrel (215). One end of the first filter cloth (218) is fixedly connected to the pressure plate (23), and the other end is fixedly connected to the rotating plate (25). The slide groove (220) is arranged on the inner wall of the processing barrel (1) on the same horizontal axis as the rotating plate (25). The discharge barrel (215) is fixedly connected to the secondary collection unit (3).

5. A filter residue collecting device for wet production of feed-grade calcium hydrogen phosphate according to claim 4, characterized in that: The secondary collection unit (3) comprises a telescopic rotating motor (31), a fine filter plate (32), a traction rope (33), a small ball (34), a spiral coil (35), a push switch (36), an electrode plate (37), an electric telescopic plate (38), a multi-section elastic push rod (39), a material blocking barrel (310), a second filter cloth (311), an elastic rope (312), a fixed plate (313), an electromagnet (314), a guide barrel (315) and a magnetic block (316). The fixed end of the telescopic rotating motor (31) is fixedly mounted on one end of the discharge barrel (215) close to the horizontal base through a connecting rod. The output end of the telescopic rotating motor (31) is fixedly connected to the fine filter plate (32), the fixed plate (313) is connected to the small ball (34) via a traction rope (33), the inner ring of the fine filter plate (32) is provided with a conductive plate, the fine filter plate (32) is slidably connected to the discharge cylinder (215), the electrode plate (37) is electrically connected to the electromagnet three (314), the electromagnet three (314) is fixedly mounted on the end of the telescopic end of the electric telescopic plate (38) away from the horizontal base, the magnetic block (316) is slidably mounted in the guide cylinder (315) via a spring, and the guide cylinder (315) is fixedly mounted on the guide cylinder (315) via a spring. The small ball (34) is slidably connected to the spiral coil (35), and the spiral coil (35) is fixedly mounted on the inner surface of the treatment cylinder (1). There are two push switches (36), which are fixedly mounted on both ends of the spiral coil (35). The push switches (36) are electrically connected to the electric telescopic plate (38). The electrode plate (37) is fixedly mounted on the discharge cylinder (215). The electric telescopic plate (38) is installed below the coarse filter plate (214). The fixed end of the electric telescopic plate (38) is fixedly mounted on the outside of the discharge cylinder (215). The surface of the multi-section elastic push rod (39) is fixedly mounted at a fixed end of the coarse filter plate (214) close to the horizontal base, the material blocking cylinder (310) is fixedly mounted at an end of the fixed plate (313) close to the horizontal base, the fine filter plate (32) has two pieces, the fine filter plate (32) is connected to the fixed plate (313) via a torsion spring, one end of the second filter cloth (311) is rotatably connected to the rotating plate (25) via a slip ring, and the other end is fixedly connected to the fixed plate (313), and one end of the elastic rope (312) is fixedly connected to the fixed plate (313), and the other end is fixedly connected to the blocking plate (217).

6. A filter residue collecting device for wet production of feed-grade calcium hydrogen phosphate according to claim 5, characterized in that: The multi-section elastic push rod (39) is provided with an inclined surface near the fixed end of the electric telescopic plate (38).

7. A filter residue collecting device for wet production of feed-grade calcium hydrogen phosphate according to claim 5, characterized in that: The directions of the currents flowing through the two adjacent groups of electrode plates (37) are opposite.

8. A filter residue collecting device for wet production of feed-grade calcium hydrogen phosphate according to claim 1, characterized in that: A filter screen is arranged inside the liquid storage tank (4).

9. A filter residue collecting device for wet production of feed-grade calcium hydrogen phosphate according to claim 4, characterized in that: A pressure sensor is provided at the bottom of the scraper (211) on one side close to the screw (22); the inner wall of one end of the scraper (211) close to the coarse filter plate (214) is deformable; and magnetorheological fluid is contained inside the scraper (211).

10. A filter residue collecting device for wet production of feed-grade calcium hydrogen phosphate according to claim 4, characterized in that: The coarse filter plate (214) is a deformable plate, and the fine filter plate (32) is a rigid plate.

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