Solid-liquid separation plate-and-frame filter press for vanadium-nitrogen alloy production

Abstract

The invention relates to a plate-and-frame filter press for solid-liquid separation in vanadium-nitrogen alloy production, and belongs to the technical field of vanadium-nitrogen alloy production. The plate-and-frame filter press for solid-liquid separation in vanadium-nitrogen alloy production comprises a rack, a hydraulic system, a feeding system, a filtering system, a collecting system and a control system, and the hydraulic system, the feeding system, the filtering system, the collecting system and the control system are all mounted on the surface of the rack; the rubber expansion bag can be rapidly filled with high-pressure gas through the auxiliary demolding assembly, so that the rubber expansion bag pushes out a filter material retained in the filter frame towards the collecting frame, and compared with an existing vibration demolding structure, the discharging track of the filter material can be limited, so that the probability that filter material residues splash around is reduced, and the discharging efficiency of the filter material is improved. Meanwhile, the vibration force borne by the rack can be reduced, and then the operation stability of the rack is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of vanadium-nitrogen alloy production, in particular to a plate-frame filter press for solid-liquid separation in the production of vanadium-nitrogen alloy. Background Art

[0002] Vanadium-nitrogen alloy is a new alloy additive that can replace ferrovanadium in the production of micro-alloyed steel. Plate and frame filter press is a common solid-liquid separation equipment in the production process of vanadium-nitrogen alloy.

[0003] Since the filter cake is tightly squeezed in the filter plate, it is easy for the filter cake to get stuck in the filter plate during demolding. At present, plate and frame filter presses are mostly equipped with filter plate vibration mechanisms to improve the demolding rate of the filter cake. However, the vibration will not only splash the filter cake residues around due to the vibration of the filter plate on the frame, increasing the pollution to the surrounding environment, but also various bolt connection parts on the frame will be accelerated loosening due to vibration, increasing the burden of maintenance of the plate and frame filter press for the staff. Summary of the invention

[0004] Based on this, it is necessary to provide a plate and frame filter press for solid-liquid separation produced by vanadium-nitrogen alloy to address the problem that the existing plate and frame filter press with vibration-assisted demolding has large operating pollution and easily increases the probability of loosening of its bolted connection parts.

[0005] A plate-and-frame filter press for solid-liquid separation produced by vanadium-nitrogen alloy, comprising a frame, a hydraulic system, a feeding system, a filtering system, a collecting system and a control system, wherein the hydraulic system, the feeding system, the filtering system, the collecting system and the control system are all mounted on the surface of the frame, the hydraulic system and the feeding system are both arranged on one side of the filtering system, and an auxiliary demoulding mechanism plugged into the filtering system is fixedly connected to the surface of the frame;

[0006] The filtration system includes evenly distributed filter frames, evenly distributed rubber expansion bags and evenly distributed plug-in valves. The filter frame is slidably connected to the surface of the frame, the rubber expansion bag is fixedly connected to the inner side of the filter frame, the plug-in valve is fixedly connected to and communicated with the surface of the rubber expansion bag, and one end of the plug-in valve passes through the outside of the filter frame.

[0007] Furthermore, the auxiliary demoulding mechanism includes a slide rail, an electric trolley, a one-way adjustment component and an auxiliary demoulding component. The slide rail is fixedly connected to the surface of the frame, the electric trolley is slidably connected to the surface of the slide rail, the one-way adjustment component is fixedly connected to the top of the electric trolley, one end of the one-way adjustment component passes through between two adjacent filter frames, the auxiliary demoulding component is plugged in and connected to one end of one of the plug-in valves, and the electric trolley and the one-way adjustment component are both fixedly connected to the auxiliary demoulding component.

[0008] Furthermore, the auxiliary demolding assembly includes a high-pressure air pump, a hose, a three-way joint and a solenoid valve. The high-pressure air pump is fixedly connected to the surface of the electric vehicle, the hose is fixedly connected to and connected to the air outlet of the high-pressure air pump, the three-way joint is fixedly connected to and connected to one end of the hose, the bottom of the three-way joint is fixedly connected to the one-way adjustment assembly, one end of the three-way joint is plugged into and connected to the adjacent plug-in valve, and the solenoid valve is fixedly connected and connected to the other end of the three-way joint.

[0009] In one of the embodiments, the auxiliary demolding component can be used to quickly fill the rubber expansion bag with high-pressure gas, so that the rubber expansion bag pushes the filter material retained in the filter frame toward the collection frame. Compared with the existing vibration demolding structure, this can not only limit the falling trajectory of the filter material to reduce the probability of filter material residues splashing around, but also reduce the vibration force on the frame, thereby ensuring the operating stability of the frame.

[0010] Furthermore, the one-way adjustment component includes a mounting frame, an electromagnet, a spring, a magnetic block and an adjustment block, the mounting frame is fixedly connected to one end of the electric trolley, the electromagnet is embedded and installed in one end of the mounting frame, the spring is fixedly connected to one end of the mounting frame, the magnetic block is fixedly connected to one end of the spring, the three-way joint is fixedly connected to the top of the magnetic block, the adjustment block is fixedly connected to one end of the magnetic block, one end of the adjustment block passes through between two adjacent filter frames, the horizontal cross-section of the adjustment block is a right-angled trapezoid, and the inclined surface of the adjustment block faces away from the hydraulic system.

[0011] In one of the embodiments, the electric trolley utilizes a one-way adjustment component to quickly separate the edge filter frame from the adjacent filter frame, so that the filter material between the two filter frames is unobstructed. This not only allows the loosely adhered filter material to fall off by itself, but also provides sufficient expansion space for the rubber expansion bag to ensure that the expanded rubber expansion bag can smoothly push out the retained filter material. The one-way adjustment component can also automatically adjust the auxiliary demolding component to connect or separate with the corresponding plug-in valve, which does not require manual operation by the staff and reduces the burden of use on the staff.

[0012] Furthermore, a one-way valve is fixedly connected between the hose and the three-way connector, and the blocking direction of the one-way valve is the same as the direction from the three-way connector to the hose.

[0013] In one embodiment, this can prevent water in the rubber expansion bag from flowing back into the high-pressure air pump, so as to ensure that the high-pressure air pump can operate normally.

[0014] Furthermore, a dustproof net is embedded in the air inlet end of the high-pressure air pump.

[0015] In one of the embodiments, this can prevent the high-pressure air pump from sucking in dust or obstructions during the air intake process, thereby reducing the probability of the high-pressure air pump being blocked.

[0016] Furthermore, a guide rod is inserted into the other end of the installation frame, and one end of the guide rod passes through the installation frame and the spring in sequence and is fixedly connected to the magnetic suction block.

[0017] In one embodiment, this can limit the movement trajectory of the adjustment block to ensure that the adjustment block and the three-way joint can move according to the preset trajectory.

[0018] Furthermore, the horizontal cross-section of the guide rod is T-shaped, and the cross-section of the guide rod disposed on the mounting frame facing away from the magnetic block is larger than the cross-section of the contact portion between the guide rod and the mounting frame.

[0019] In one embodiment, this can prevent the guide rod from being separated from the mounting frame, thereby ensuring that the guide rod can properly perform the guiding function.

[0020] Furthermore, the number of the guide rods and the number of the springs are both two, and the two guide rods and the two springs are symmetrically distributed on both sides of the electromagnet.

[0021] In one embodiment, this can prevent the spring and the adjustment block from twisting, further ensuring that the adjustment block and the three-way joint can move according to the preset trajectory.

[0022] Furthermore, the spring is an insulating plastic material component, and the spring is always in a compressed state.

[0023] In one embodiment, this can reduce the influence of the spring on the suction force of the electromagnet to ensure that the three-way connector can be normally separated from the plug valve.

[0024] Furthermore, a groove is provided at one end of the magnetic block, the other end of the adjustment block is plugged into the groove, a bolt is plugged into the surface of the magnetic block, the rod of the bolt passes through the magnetic block and the groove in sequence and is threadedly connected to the adjustment block.

[0025] In one embodiment, this enables the staff to easily replace the damaged or deformed adjustment block, which does not require the replacement of the entire one-way adjustment assembly, thereby reducing the use cost of the one-way adjustment assembly.

[0026] The plate-and-frame filter press for solid-liquid separation produced by the above-mentioned vanadium-nitrogen alloy can quickly fill the rubber expansion bag with high-pressure gas by using the auxiliary demoulding component, so that the rubber expansion bag pushes the filter material retained in the filter frame toward the collecting frame. Compared with the existing vibration demoulding structure, this can not only limit the falling trajectory of the filter material to reduce the probability of the filter material residue splashing around, but also reduce the vibration force on the frame, thereby ensuring the operating stability of the frame;

[0027] The electric trolley uses a one-way adjustment component to quickly separate the edge filter frame from the adjacent filter frame, so that the filter material between the two filter frames is unobstructed. This not only allows the loosely adhered filter material to fall off by itself, but also provides sufficient expansion space for the rubber expansion bag to ensure that the expanded rubber expansion bag can smoothly push out the retained filter material. The one-way adjustment component can also automatically adjust the auxiliary demoulding component to connect or separate with the corresponding plug-in valve, which does not require manual operation by the staff and reduces the burden on the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 It is a structural schematic diagram of the present invention;

[0030] Figure 2 It is a schematic diagram of the connection between the filtering system and the auxiliary demoulding mechanism in the present invention;

[0031] Figure 3 It is a cross-sectional schematic diagram of the filtering system and the auxiliary demoulding mechanism in the present invention;

[0032] Figure 4 for Figure 3 A magnified view of middle;

[0033] Figure 5 It is a structural schematic diagram of a partial cutout of the auxiliary demoulding mechanism in the present invention;

[0034] Figure 6 It is a cross-sectional schematic diagram of a partial structure of the auxiliary demoulding mechanism in the present invention;

[0035] Figure 7 It is an exploded schematic diagram of the one-way adjustment component and the auxiliary demoulding component of the present invention.

[0036] Reference numerals:

[0037] 100, frame; 200, hydraulic system; 300, feeding system; 400, filtering system; 410, filter frame; 420, rubber expansion bag; 430, plug valve; 500, collecting system; 600, control system; 700, auxiliary demoulding mechanism; 710, slide rail; 720, electric trolley; 730, one-way adjustment component; 731, mounting frame; 732, electromagnet; 733, spring; 734, magnetic block; 7341, groove; 735, adjustment block; 736, guide rod; 737, bolt; 740, auxiliary demoulding component; 741, high-pressure air pump; 742, hose; 743, three-way connector; 744, solenoid valve; 745, one-way valve; 746, dust net. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0039] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of the present invention are for illustrative purposes only and do not represent the only implementation method.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0041] In the present invention, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] Unless otherwise defined, all technical and scientific terms used in the specification of the present invention have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in the specification of the present invention includes any and all combinations of one or more related listed items.

[0043] Combine the following Figure 1 - Figure 7 The present invention describes a plate and frame filter press for solid-liquid separation produced by a vanadium-nitrogen alloy.

[0044] In one embodiment, a plate-and-frame filter press for solid-liquid separation produced by vanadium-nitrogen alloy includes a frame 100, a hydraulic system 200, a feeding system 300, a filtering system 400, a collecting system 500, and a control system 600. The hydraulic system 200, the feeding system 300, the filtering system 400, the collecting system 500, and the control system 600 are all installed on the surface of the frame 100. The hydraulic system 200 and the feeding system 300 are both arranged on one side of the filtering system 400. The collecting system 500 is arranged below the filtering system 400. The surface of the frame 100 is fixedly connected with an auxiliary demoulding mechanism 700 plugged into the filtering system 400.

[0045] The filtering system 400 includes uniformly distributed filter frames 410, uniformly distributed rubber expansion bags 420 and uniformly distributed plug valves 430. The filter frame 410 is slidably connected to the surface of the frame 100, the rubber expansion bag 420 is fixedly connected to the inner side of the filter frame 410, the plug valve 430 is fixedly connected and communicated with the surface of the rubber expansion bag 420, and one end of the plug valve 430 passes through the outside of the filter frame 410.

[0046] The hydraulic system 200 includes a hydraulic cylinder, a pressure plate, a two-way pump and a diverter valve. The hydraulic cylinder is fixedly connected to the surface of the frame 100, the pressure plate is fixedly connected to the output end of the hydraulic cylinder, the pressure plate and the filter frame 410 are arranged at the same height, the two-way pump is fixedly connected to the top of the hydraulic cylinder, and one end of the two-way pump is fixedly connected and connected to the diverter valve; the rubber expansion bag 420 and the pressure plate are both provided with material guide holes on the surface, the feeding system 300 includes a delivery pump, the delivery pump is fixedly connected to the top of the hydraulic cylinder, and the discharge end of the delivery pump is fixedly connected and connected to the material guide hole on the surface of the pressure plate, the collection system 500 includes uniformly distributed aggregate frames, the aggregate frames are plugged into the inner side of the frame 100, and the aggregate frames are arranged directly below the filter frame 410, and the control system 600 includes a PLC controller, and the PLC controller is fixedly connected to the surface of the frame 100;

[0047] When the vanadium-nitrogen alloy raw material needs to be dehydrated, the staff first puts the corresponding number of filter frames 410 on the rack 100, and then manually controls the PLC controller to control the extension of the hydraulic cylinder, and the hydraulic cylinder drives the pressure plate to squeeze the filter frame 410 on the rack 100. When all the filter frames 410 are squeezed into place, the PLC controller is manually controlled to control the delivery pump to deliver the vanadium-nitrogen alloy raw material into the guide hole. At this time, the vanadium-nitrogen alloy raw material follows the guide hole on the rubber expansion bag 420 to enter the next two rubber expansion bags 420. After all the adjacent two rubber expansion bags 420 are filled with vanadium-nitrogen alloy raw materials, the diverter valve is closed. Manually connect all the plug valves 430 together, then manually operate the PLC controller to control the two-way pump to evenly transport water into the plug valve 430 connected to it through the diverter valve, and the plug valve 430 guides the water to the rubber expansion bag 420. At this time, the rubber expansion bag 420 is filled with water and expanded. At the same time, two adjacent rubber expansion bags 420 cooperate to squeeze the vanadium-nitrogen alloy raw material between them. The vanadium-nitrogen alloy raw material is dehydrated under the compression, and then the squeezed water is discharged along the filter frame 410 to achieve the purpose of quickly dehydrating the vanadium-nitrogen alloy raw material. Finally, manually operate the PLC controller to control the two-way pump to pump out the water in the rubber expansion bag 420.

[0048] like Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, the auxiliary demoulding mechanism 700 includes a slide rail 710, an electric trolley 720, a one-way adjustment component 730 and an auxiliary demoulding component 740. The slide rail 710 is fixedly connected to the surface of the frame 100, the electric trolley 720 is slidably connected to the surface of the slide rail 710, the one-way adjustment component 730 is fixedly connected to the top of the electric trolley 720, one end of the one-way adjustment component 730 passes through between two adjacent filter frames 410, the auxiliary demoulding component 740 is plugged into and connected to one end of one of the plug-in valves 430, and the electric trolley 720 and the one-way adjustment component 730 are both fixedly connected to the auxiliary demoulding component 740.

[0049] like Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the one-way adjustment component 730 includes a mounting frame 731, an electromagnet 732, a spring 733, a magnetic block 734 and an adjustment block 735. The mounting frame 731 is fixedly connected to one end of the electric trolley 720, the electromagnet 732 is embedded and installed in one end of the mounting frame 731, the spring 733 is fixedly connected to one end of the mounting frame 731, the magnetic block 734 is fixedly connected to one end of the spring 733, the three-way joint 743 is fixedly connected to the top of the magnetic block 734, the adjustment block 735 is fixedly connected to one end of the magnetic block 734, one end of the adjustment block 735 passes through between two adjacent filter frames 410, the horizontal cross-section of the adjustment block 735 is a right-angled trapezoid, and the inclined surface of the adjustment block 735 faces away from the hydraulic system 200; the other end of the mounting frame 731 is plugged with a guide rod 736, and one end of the guide rod 736 passes through the filter frames 410 in sequence. The guide rod 736 is inserted through the installation frame 731 and the spring 733 and is fixedly connected to the magnetic block 734; the horizontal cross-sectional shape of the guide rod 736 is T-shaped, and the cross-sectional dimension of the guide rod 736 arranged on the installation frame 731 facing away from the magnetic block 734 is larger than the cross-sectional dimension of the contact portion between the guide rod 736 and the installation frame 731; the number of the guide rod 736 and the spring 733 is two, and the two guide rods 736 and the two springs 733 are symmetrically distributed on both sides of the electromagnet 732; the spring 733 is an insulating plastic material component, and the spring 733 is always in a compressed state; a groove 7341 is provided at one end of the magnetic block 734, and the other end of the adjustment block 735 is plugged into the groove 7341, and a bolt 737 is plugged into the surface of the magnetic block 734, and the rod of the bolt 737 sequentially passes through the magnetic block 734 and the groove 7341 and is threadedly connected to the adjustment block 735;

[0050] When the dehydration operation of the vanadium-nitrogen alloy raw material is completed, the staff first removes the diverter valve and the plug valve 430, manually controls the PLC controller to control the hydraulic cylinder to reset, and the hydraulic cylinder drives the pressure plate to reset, and then manually controls the PLC controller to execute the demolding instruction of the filter material. The PLC controller controls the electric trolley 720 to slide along the slide rail 710 for a specified distance in the direction away from the hydraulic cylinder according to the preset instruction, and the electric trolley 720 drives the one-way adjustment component 730 to slide a specified distance. During this process, the inclined surface of the adjustment block 735 contacts the corner of the filter frame 410, and the filter frame 410 squeezes the adjustment block 735 in the direction close to the installation frame 731 through the inclined surface of the adjustment block 735. When the electric trolley 720 slides to the preset position, the adjustment block 735 just contacts the filter frame 410, and the spring 735 is in contact with the wind force of the filter frame 410. The adjusting block 735 is quickly pushed back by the magnetic block 734. At this time, the adjusting block 735 is inserted into the gap between the two filter frames 410, and the vertical surface of the adjusting block 735 is tightly abutted against the side end of the previously squeezed filter frame 410. At this time, the PLC controller controls the electric trolley 720 to quickly move back a specified distance along the slide rail 710 according to the preset instructions. The electric trolley 720 drives the filter frame 410 to separate from the adjacent filter frame 410 through the one-way adjustment component 730. At this time, the squeezed filter material between the two filter frames 410 loses its obstruction, and the loosely adhered filter material falls into the collection frame below during the movement. When the electric trolley 720 moves back a specified distance, the PLC controller can drive the electric trolley 720 to move back a specified distance again according to the preset instructions, so as to achieve the purpose of continuously adjusting the position of the filter frame 410.

[0051] like Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the auxiliary demoulding component 740 includes a high-pressure air pump 741, a hose 742, a three-way joint 743 and a solenoid valve 744. The high-pressure air pump 741 is fixedly connected to the surface of the electric trolley 720, the hose 742 is fixedly connected and connected to the air outlet end of the high-pressure air pump 741, the three-way joint 743 is fixedly connected and connected to one end of the hose 742, the bottom of the three-way joint 743 is fixedly connected to the one-way adjustment component 730, one end of the three-way joint 743 is plugged and connected to the adjacent plug-in valve 430, and the solenoid valve 744 is fixedly connected and connected to the other end of the three-way joint 743; a one-way valve 745 is fixedly connected between the hose 742 and the three-way joint 743, and the blocking direction of the one-way valve 745 is the same as the direction from the three-way joint 743 to the hose 742; a dustproof net 746 is embedded and installed at the air inlet end of the high-pressure air pump 741;

[0052] When the adjusting block 735 is squeezed and moved back by the filter frame 410, the adjusting block 735 synchronously drives the three-way joint 743 to move through the magnetic block 734. When the adjusting block 735 loses resistance and is pushed back by the spring 733, the spring 733 drives the three-way joint 743 to move back through the magnetic block 734. The three-way joint 743 is just plugged into the corresponding plug valve 430. When the PLC controller controls the electric trolley 720 to move back, the PLC controller synchronously controls to start the high-pressure air pump 741 according to the preset program. The high-pressure air pump 741 quickly blows the outside air into the rubber expansion bag 4 through the hose 742, the three-way joint 743 and the plug valve 430. 20, the rubber expansion bag 420 swells quickly and pushes the filter material trapped inside the filter frame 410 outward, which can increase the demoulding rate of the filter material, and because the rubber expansion bag 420 can expand along the direction of the filter frame 410, it can push the filter material to the top of the collection frame, thereby increasing the collection rate of the collection frame for the filter material. After the high-pressure air pump 741 runs for a specified time, the PLC controller controls the high-pressure air pump 741 to be turned off and the solenoid valve 744 to be turned on according to a preset program. At this time, the three-way connector 743 is connected to the outside world, and the high-pressure gas inside the rubber expansion bag 420 is quickly released, so that the rubber expansion bag 420 quickly returns to its original state;

[0053] When the electric trolley 720 moves back a specified distance, the PLC controller controls the closing of the solenoid valve 744 and the opening of the electromagnet 732. The electromagnet 732 generates magnetic force and quickly absorbs the magnetic block 734. The magnetic block 734 drives the three-way connector 743 to separate from the plug-in valve 430 to ensure that the electric trolley 720 can drive the one-way adjustment component 730 and the auxiliary demolding component 740 to move back without burden.

[0054] It should be noted that, in the above description, the filter frame 410, rubber expansion bag 420, plug valve 430, slide rail 710, electric trolley 720, electromagnet 732, high-pressure air pump 741, three-way connector 743, solenoid valve 744, one-way valve 745, hydraulic cylinder, two-way pump, diverter valve, delivery pump and PLC controller are all devices with relatively mature application of existing technology. The specific model can be selected according to actual needs. At the same time, the electric trolley 720, electromagnet 732, high-pressure air pump 741, solenoid valve 744, hydraulic cylinder, two-way pump, delivery pump and PLC controller can be powered by a built-in power supply or by AC power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0055] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A plate-and-frame filter press for solid-liquid separation in the production of vanadium-nitrogen alloy, comprising a frame (100), a hydraulic system (200), a feeding system (300), a filtering system (400), a collecting system (500) and a control system (600), wherein the hydraulic system (200), the feeding system (300), the filtering system (400), the collecting system (500) and the control system (600) are all installed on the surface of the frame (100), and the collecting system (500) is arranged below the filtering system (400), characterized in that: An auxiliary demoulding mechanism (700) plugged into the filtering system (400) is fixedly connected to the surface of the frame (100); The filter system (400) comprises uniformly distributed filter frames (410), uniformly distributed rubber expansion bags (420) and uniformly distributed plug valves (430); the filter frame (410) is slidably connected to the surface of the frame (100); the rubber expansion bag (420) is fixedly connected to the inner side of the filter frame (410); the plug valve (430) is fixedly connected to and communicated with the surface of the rubber expansion bag (420); and one end of the plug valve (430) passes through the outside of the filter frame (410).

2. The plate-frame filter press for solid-liquid separation in the production of vanadium-nitrogen alloy according to claim 1, characterized in that: The auxiliary demoulding mechanism (700) comprises a slide rail (710), an electric trolley (720), a one-way adjustment component (730) and an auxiliary demoulding component (740); the slide rail (710) is fixedly connected to the surface of the frame (100); the electric trolley (720) is slidably connected to the surface of the slide rail (710); the one-way adjustment component (730) is fixedly connected to the top of the electric trolley (720); one end of the one-way adjustment component (730) passes through between two adjacent filter frames (410); the auxiliary demoulding component (740) is plugged into and communicated with one end of one of the plug-in valves (430); and the electric trolley (720) and the one-way adjustment component (730) are both fixedly connected to the auxiliary demoulding component (740).

3. The plate-frame filter press for solid-liquid separation in the production of vanadium-nitrogen alloy according to claim 2, characterized in that: The auxiliary demoulding component (740) includes a high-pressure air pump (741), a hose (742), a three-way joint (743) and a solenoid valve (744); the high-pressure air pump (741) is fixedly connected to the surface of the electric vehicle (720); the hose (742) is fixedly connected to and communicated with the air outlet of the high-pressure air pump (741); the three-way joint (743) is fixedly connected to and communicated with one end of the hose (742); the bottom of the three-way joint (743) is fixedly connected to the one-way adjustment component (730); one end of the three-way joint (743) is plugged into and communicated with the adjacent plug-in valve (430); and the solenoid valve (744) is fixedly connected to and communicated with the other end of the three-way joint (743).

4. The plate-frame filter press for solid-liquid separation in the production of vanadium-nitrogen alloy according to claim 3, characterized in that: The one-way adjustment component (730) comprises a mounting frame (731), an electromagnet (732), a spring (733), a magnetic block (734) and an adjustment block (735); the mounting frame (731) is fixedly connected to one end of the electric trolley (720); the electromagnet (732) is embedded and installed in one end of the mounting frame (731); the spring (733) is fixedly connected to one end of the mounting frame (731); the magnetic block (734) is fixedly connected to one end of the spring (733); the three-way connector (743) is fixedly connected to the top of the magnetic block (734); the adjustment block (735) is fixedly connected to one end of the magnetic block (734); one end of the adjustment block (735) passes through between two adjacent filter frames (410); the horizontal cross-section of the adjustment block (735) is a right-angle trapezoid; the inclined surface of the adjustment block (735) faces away from the hydraulic system (200).

5. The plate-frame filter press for solid-liquid separation in the production of vanadium-nitrogen alloy according to claim 3, characterized in that: A one-way valve (745) is fixedly connected between the hose (742) and the three-way connector (743); the blocking direction of the one-way valve (745) is the same as the direction from the three-way connector (743) to the hose (742); and a dustproof net (746) is embedded in the air inlet end of the high-pressure air pump (741).

6. The plate-frame filter press for solid-liquid separation in the production of vanadium-nitrogen alloy according to claim 4, characterized in that: The other end of the installation frame (731) is plugged with a guide rod (736), and one end of the guide rod (736) passes through the installation frame (731) and the spring (733) in sequence and is fixedly connected to the magnetic attraction block (734).

7. The plate-frame filter press for solid-liquid separation in the production of vanadium-nitrogen alloy according to claim 6, characterized in that: The horizontal cross-section of the guide rod (736) is T-shaped, and the cross-section of the guide rod (736) disposed on the mounting frame (731) facing away from the magnetic attraction block (734) is larger than the cross-section of the contact portion between the guide rod (736) and the mounting frame (731).

8. The plate-frame filter press for solid-liquid separation in the production of vanadium-nitrogen alloy according to claim 7, characterized in that: The number of the guide rods (736) and the number of the springs (733) are both two, and the two guide rods (736) and the two springs (733) are symmetrically distributed on both sides of the electromagnet (732).

9. The plate-frame filter press for solid-liquid separation in the production of vanadium-nitrogen alloy according to claim 8, characterized in that: The spring (733) is an insulating plastic material component, and the spring (733) is always in a compressed state.

10. The plate-frame filter press for solid-liquid separation in the production of vanadium-nitrogen alloy according to claim 4, characterized in that: One end of the magnetic block (734) is provided with a groove (7341), and the other end of the adjustment block (735) is plugged into the groove (7341). A bolt (737) is plugged into the surface of the magnetic block (734), and the rod of the bolt (737) passes through the magnetic block (734) and the groove (7341) in sequence and is threadedly connected to the adjustment block (735).

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