Automatic mud discharging and flushing device of high-pressure thin pancake plate-and-frame filter press and use method of automatic mud discharging and flushing device

Abstract

The invention relates to sludge dewatering treatment equipment, in particular to an automatic sludge unloading and flushing device for a high-pressure pancake plate-and-frame filter press and a use method. The driving ends of the two 90-degree steering devices are symmetrically arranged at the two ends of the power output shaft correspondingly, and the driven ends of the two 90-degree steering devices penetrate through the middles of the two lifting rotating shafts correspondingly and are fixed. The two lifting rotating shafts respectively penetrate through the lifting gears above all the box plates in sequence; the liftable filter cloth upper fixing bracket is hung on the upper fixing pieces of the two corresponding lifting chains on the two sides, and the liftable filter cloth lower fixing bracket is hung on the lower fixing pieces of the lifting chains; the upper end of the folded filter cloth is laid and fixed on the fixed bracket, and the lower end of the folded filter cloth is fixed on the filter cloth lower fixed frame around the filter cloth folding frame. According to the invention, the simultaneous mud unloading of dozens of mud cakes can be realized, the mud unloading time is effectively shortened, the filter cloth can be simultaneously flushed, the filter cloth flushing time is shortened, the filter cloth can be more frequently flushed, the service life of the filter cloth is effectively prolonged, and flushing water can be repeatedly used.

Description

Technical Field

[0001] The invention relates to the field of sludge dewatering treatment equipment, in particular to a device and a use method for automatically unloading and flushing sludge of a high-pressure pancake plate-frame filter press. Background Art

[0002] At present, the diaphragm plate and frame filter press is widely used in the sludge treatment process of sewage treatment plants. When unloading the sludge from the existing diaphragm plate and frame filter press, it is necessary to manually use a shovel to unload the mud cakes one by one. The unloading time is very long, the working environment is poor, and labor is wasted; in addition, after the diaphragm plate and frame machine has been working for a period of time, mud stains and crystallized salts will remain in the gaps of the filter cloth for filtering water. The mud stains can be washed away by water, but if the crystallized salts are not cleaned in time, they will gradually block the gaps of the filter cloth for filtering water, and the crystallized salts are very dense. Once formed, they need to be soaked and dissolved for a long time to be removed. Therefore, the diaphragm plate and frame filter press in the sludge treatment plant is generally cleaned every few days. When cleaning, production needs to be stopped and the filter cloths on both sides of the mud cavity need to be washed one by one. Although the filter cloth is washed every few days, the crystallized salts will still gradually accumulate, which will extend the single mud injection time in the production process and gradually reduce the amount of mud that can be injected into the mud cavity at a time, which seriously affects the production efficiency of the filter press.

[0003] Currently in the market, there are many research directions to solve the problem of automatic mud unloading and cleaning of filter cloth.

[0004] The invention patent with publication number CN118079481A and invention name “A novel filter press and sludge treatment process” provides an automatic mud unloading method and a filter cloth cleaning and regeneration device; in the automatic mud unloading method, mud unloading and filter cloth return are realized by the positive and negative reversing actions of the cloth pulling mechanism at both ends of the filter cloth. All filter plate groups on the filter press use a very long filter cloth. Due to the influence of friction resistance and the influence of the elasticity of the filter cloth, the tensile force applied to various parts of the filter cloth is different. The tensile force applied to the positions of the two ends of the filter cloth close to the cloth pulling mechanism is relatively large, and the local position of the filter cloth is easily damaged. Once the filter cloth is damaged, the very long filter cloth needs to be completely removed for maintenance; in addition, the filter cloth cleaning and regeneration device is arranged at one end of the filter cloth. When the filter cloth is flushed, all the used filter cloth needs to be rolled back, which requires the filter cloth to be long enough. In addition, the crystallized salt needs a certain amount of time to dissolve before it can be cleaned, so the filter cloth cleaning time is long. Summary of the invention

[0005] In view of the problems that the existing diaphragm plate and frame filter press needs manual mud unloading, the mud unloading time is long, and the labor is wasted, and the accumulation of crystallized salt during the use of the filter cloth prolongs the single mud injection time in the production process and reduces the amount of sludge injected at a single time. The present invention provides a device and a method for automatically unloading and flushing mud for a high-pressure thin cake plate and frame filter press: dozens of mud cakes can be unloaded at the same time, effectively shortening the mud unloading time. After the mud cake is unloaded, the automatic flushing device can flush the filter cloth at the same time, shortening the filter cloth flushing time, and can flush the filter cloth more frequently, effectively prolonging the service life of the filter cloth and improving the production efficiency of the filter press. The flushing water can also be reused many times.

[0006] The technical solution of the present invention is: a device for automatically unloading mud and washing a high-pressure pancake plate-frame filter press, comprising a 90° steering device, a lifting rotating shaft, a lifting wheel, a stepping motor, a power output shaft, a lifting chain, an upper fixing frame for filter cloth, a lower fixing frame for filter cloth, a filter cloth folding frame, and a filter cloth; the stepping motor is arranged above the box plate in the middle of a plurality of diaphragm plate-frame filter plate groups, the power output shaft passes through the stepping motor and is fixed thereto, the active ends of the two 90° steering devices are symmetrically arranged at the two ends of the power output shaft, and the driven ends are respectively arranged in the middle of the two lifting rotating shafts; a pair of lifting wheels are symmetrically arranged on both sides above each box plate of the filter plate group, and the two lifting rotating shafts are respectively arranged It passes through all the lifting wheels in sequence; the upper fixing part of the lifting chain is arranged at the inner lower part of the lifting wheel, and the lifting chain engages with the lifting wheel upward and then moves vertically downward; the upper fixing frame of the filter cloth is hung on the upper fixing parts of the two corresponding lifting wheels on both sides, and the lower fixing frame of the filter cloth is hung on the lower fixing parts of the two corresponding lifting wheels on both sides; the folded filter cloth is arranged between the upper fixing frame of the filter cloth and the lower fixing frame of the filter cloth; the filter cloth folding frame is respectively arranged at the bottom of each filter plate of the filter plate group, and a plurality of filter cloth folding frames are aligned in a row; a plurality of nozzles are arranged on the flushing water pipe at the lower part of the filter cloth folding frame, one end of the flushing water pipe is blocked, and a water inlet is arranged at the other end of the flushing water pipe.

[0007] In the above technical solution, the upper end of the folded filter cloth is laid on the filter cloth fixing rod I of the filter cloth upper fixing frame, the end of the filter cloth I on one side of the filter cloth is arranged on the filter cloth fixing rod II of the filter cloth lower fixing frame; the end of the filter cloth II on the other side is arranged on the filter cloth fixing rod III of the filter cloth lower fixing frame.

[0008] In the above technical scheme, the lower filter cloth fixing frame includes two symmetrically arranged fixing plates I, filter cloth fixing rods III and filter cloth fixing rods II, the filter cloth fixing rods III and filter cloth fixing rods II are respectively arranged on both sides of the fixing plate I, and the filter cloth fixing rods III are arranged above the filter cloth fixing rods II; the filter cloth folding frame includes two symmetrically arranged fixing plates II, filter cloth folding rods III, filter cloth folding rods II and flushing water pipes; the two ends of the filter cloth folding rods III and filter cloth folding rods II are respectively arranged at the lower part of the two fixing plates II, and the filter cloth folding rods III are located above the filter cloth folding rods II; the filter cloth fixing rods II correspond to the filter cloth folding rods II, and the filter cloth fixing rods III correspond to the filter cloth folding rods III; the two ends of the flushing water pipe are respectively arranged at the bottom ends of the two fixing plates II.

[0009] A method for using a device for automatically unloading mud and washing a high-pressure pancake plate-frame filter press, firstly fixing a movable end membrane plate on a movable end plate, and fixing a fixed end membrane plate on a fixed end plate, when the filter press finishes filtering, the main hydraulic cylinder of the filter press pulls the movable end plate outward, and the movable end membrane plate fixed on the movable end plate pulls the rear box plate and the membrane plate apart through hinges installed on its left and right sides, and the mud unloading condition is met at this time; The following steps are involved: Step 1, mud unloading: start the stepper motor, the stepper motor drives the power output shaft to rotate, the power output shaft drives the two lifting rotating shafts on both sides of the filter plate to rotate through the 90° steering devices at both ends, the two rows of lifting wheels rotate inward at the same time and pull the lifting chain inward, the upper fixings on both sides of the lifting chain gradually move downward, so that the filter cloth moves downward and drives the lifting chains on both sides to move upward, drives the lower fixing frame of the filter cloth to move upward, the ends of the filter cloth I and the filter cloth II fixed on the lower fixing frame of the filter cloth move upward and tighten the filter cloth that gradually moves downward due to the downward movement of the upper fixing, the filter cloth that moves downward drives the mud cake sandwiched between the filter cloth I and the filter cloth II to move downward, due to the dead weight of the mud cake, the mud cake separates from the filter cloth I and the filter cloth II and falls off, completing the mud unloading; Step 2, reset: After the mud unloading is completed, the stepper motor changes the rotation direction, the two lifting rotating shafts rotate outward at the same time, and pull the lifting chain outward, the lower fixing frame of the filter cloth moves downward to make the filter cloth have a tendency to relax, and at the same time, the upper fixings on both sides gradually move upward, driving the filter cloth to move upward; Step 3: filter cloth cleaning: when the filter cloth needs to be rinsed, turn on the water inlet switch, and the rinse water enters the rinse water pipe corresponding to each mud cavity from the water inlet, and is sprayed out through multiple nozzles. The filter cloth and filter cloth folding rod III, filter cloth folding rod II and the area between the two are all cleaned.

[0010] The beneficial effects of the present invention are as follows: the lifting rotating shafts on the left and right sides above the box plate can simultaneously drive the filter cloths on both sides of multiple sludge chambers to move up and down through the gears to pull the lifting chains, and automatically unload dozens of mud cakes within a few minutes. For the filter press with a small number of filter plate groups, the mud unloading can be completed at one time, and for the filter press with a large number of filter plate groups, the mud unloading can be completed several times, which greatly shortens the mud unloading time, and automatically unloads the mud at the same time without manual labor, improves the working environment, and saves labor; each mud chamber corresponds to a group of flushing water pipes and multiple nozzles. After the filter press completes the mud unloading, the filter cloth can be flushed at the same time, which greatly shortens the flushing time. The filter cloth can be flushed frequently, which effectively reduces and delays the adhesion of crystallized salt on the filter cloth, improves the mud injection efficiency and the single mud injection amount, and increases the production capacity of the filter press. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a front view of the filter press of the present invention when the mud chamber is opened and ready to unload mud; Figure 2 yes Figure 1 A'-A' direction cross-sectional view; Figure 3 This is the front view of the present invention which only includes the filter plate group and the present technical invention; Figure 4 yes Figure 3 AA direction section view; Figure 5 yes Figure 3 A partial enlarged view of part B in the middle; Figure 6 yes Figure 3 A partial enlarged view of the middle C part; Figure 7 yes Figure 3 A partial enlarged view of the middle D part; Figure 8 yes Figure 4 A partial enlarged view of the middle E part; Fig. 9 yes Figure 4 A partial enlarged view of the middle F part; Fig.10 yes Figure 4 A partial enlarged view of the middle G section; Fig.11 is a front view of the gear rack of the present invention; Fig.12 is a side view of the gear rack of the present invention; Fig.13 It is a front view of the fixing frame on the filter cloth of the present invention; Fig.14 It is a side view of the fixing frame on the filter cloth of the present invention; Fig.15 It is a front view of the lower fixing frame of the filter cloth of the present invention; Fig.16It is a side view of the filter cloth lower fixing frame of the present invention; Fig.17 It is a front view of the lower fixing frame of the filter cloth of the present invention; Fig.18 yes Fig.17 JJ direction cross-sectional view; Fig.19 is a front view of the lifting wheel of the present invention; Fig. 20 It is a side view of the lifting wheel of the present invention.

[0012] In the figure: 1, 90° steering device; 2, lifting rotating shaft; 3, gear rack; 3-1, gear mounting hole; 3-2, fixed edge; 3-3, vertical edge; 4, lifting wheel; 4-1, mounting groove; 5, stepping motor; 6, bearing seat; 7, power output shaft; 8, lifting chain; 8-1, upper fixing piece; 8-2, lower fixing piece; 9, filter press crossbeam; 10, filter cloth upper fixing frame; 10-1, filter cloth fixing rod Ⅰ; 11, support seat; 12, filter cloth lower fixing frame; 12-1, fixing plate Ⅰ; 12-2, filter cloth fixing rod Ⅱ; 1 2-3, filter cloth fixing rod III; 13, filter cloth folding frame; 13-1, fixing plate II; 13-2, filter cloth folding rod II; 13-3, filter cloth folding rod III; 13-4, flushing water pipe; 13-5, nozzle; 13-6, water inlet; 14, hinge; 14-1, long hole plate; 14-2, hinge pin; 15, bracket; 16, filter cloth; 16-1, filter cloth I; 16-2, filter cloth II; 20, movable end plate; 21, fixed end plate; 23, movable end membrane plate; 24, fixed end membrane plate; 25, box plate; 26, membrane plate. DETAILED DESCRIPTION

[0013] like Figures 1 to 20As shown, a device for automatically unloading mud and washing a high-pressure pancake plate-frame filter press comprises a 90° steering device 1, a lifting rotating shaft 2, a gear frame 3, a lifting wheel 4, a stepping motor 5, a bearing seat 6, a power output shaft 7, a lifting chain 8, a filter cloth upper fixing frame 10, a support seat 11, a filter cloth lower fixing frame 12, a filter cloth folding frame 13, a hinge 14, a bracket 15, and a filter cloth 16. A stepping motor 5 is arranged above the box plate 25 located in the middle of the filter plate group of the diaphragm plate-frame filter press, and the power output shaft 7 passes through the stepping motor 5 and the two bearing seats 6 arranged on both sides in sequence and is fixed, and the two ends of the power output shaft 7 are fixed together with the active ends of the two 90° steering devices 1 symmetrically arranged on both sides above the box plate 25. Two lifting rotating shafts 2 are symmetrically arranged on both sides above the filter plate group of the filter press, and the two lifting rotating shafts 2 respectively pass through the two symmetrically installed 90° steering devices 1, and the middle part of the lifting shaft 2 is fixed together with the 90° steering device 1. A U-shaped gear rack 3 is symmetrically installed and fixed on both sides above all the box plates 25 in the filter plate group of the filter press. The bottom side of the gear rack 3 is a fixed side 3-2. Gear mounting holes 3-1 are set on the two vertical sides 3-3. The two vertical sides 3-3 are parallel to the axis of the power output shaft 7 and are concentric with the gear mounting holes 3-1 on the same side of the filter plate. A pair of lifting wheels 4 are symmetrically set in the gear mounting holes 3-1 of each gear rack 3, and the mounting grooves 4-1 of the lifting wheels 4 are stuck in the gear mounting holes 3-1. The two ends of the two lifting rotating shafts 2 respectively pass through the two rows of aligned lifting wheels 4 above the box plates 25 in turn, and respectively pass through the symmetrically installed support seats 11 fixed on both sides above the movable end plate 20 and the fixed end plate 21 of the filter press. The axis of the lifting rotating shaft 2 is parallel to the support surface on the crossbeam 9 of the filter press and perpendicular to the axis of the power output shaft 7. An upper fixing member 8-1 and a lower fixing member 8-2 are installed at both ends of the lifting chain 8. The lifting chain 8 is meshed with the lifting wheel 4 upward and then moves vertically downward. The upper fixing member 8-1 is located at the inner lower part of the lifting wheel 4. The upper fixing members 8-1 on the two corresponding lifting wheels 4 on both sides are fixed together with the filter cloth upper fixing frame 10, and the filter cloth upper fixing frame 10 moves up and down with the rise and fall of the lifting chain 8. The lower fixing members 8-2 on the two corresponding lifting wheels 4 on both sides are fixed together with the filter cloth lower fixing frame 12, and the filter cloth lower fixing frame 12 moves up and down with the rise and fall of the lifting chain 8. The filter cloth fixing rod I 10-1 is set in the middle below the filter cloth upper fixing frame 10. The filter cloth folding frame 13 includes two symmetrically arranged fixed plates II13-1, filter cloth folding rods II13-2, filter cloth folding rods III13-3 and flushing water pipes 13-4. The two ends of the filter cloth folding rods III13-3 and filter cloth folding rods II13-2 are respectively fixed to the lower part of the two fixed plates II13-1, and the filter cloth folding rods III13-3 are located above the filter cloth folding rods II13-2. The filter cloth fixing rods II12-2 and the filter cloth folding rods II13-2 are a group, and the filter cloth fixing rods III12-3 and the filter cloth folding rods III13-3 are a group for fixing the two ends of the filter cloth 16.A flushing water pipe 13-4 is installed at the bottom of the two fixed plates II 13-1, and a plurality of nozzles 13-5 are arranged on the flushing water pipe 13-4. One end of the flushing water pipe 13-4 is blocked, and a water inlet 13-6 arranged at the other end is connected to the external water supply system. The upper part of the fixed plate II 13-1 of the filter cloth folding frame 13 is fixed to the bottom of the box plate 25, the movable end membrane plate 23, the fixed end membrane plate 24, and the membrane plate 26, and the filter cloth folding frame 13 is aligned in a row.

[0014] The filter cloth 16 is spread out and folded in half from the middle. After folding, the upper end is fixed to the filter cloth fixing rod Ⅰ10-1. One side of the filter cloth 16 is filter cloth Ⅰ16-1, and the other side is filter cloth Ⅱ16-2. The end of the filter cloth Ⅰ16-1 is extended upward around the filter cloth folding rod Ⅱ13-2 of the filter cloth folding frame 13 and fixed on the filter cloth fixing rod Ⅱ12-2 of the filter cloth lower fixing frame 12. The end of the filter cloth Ⅱ16-2 is extended upward around the filter cloth folding rod Ⅲ13-3 of the filter cloth folding frame 13 and fixed on the filter cloth fixing rod Ⅲ12-3 of the filter cloth lower fixing frame 12. The water sprayed by the multiple nozzles 13-5 on the flushing water pipe 13-4 covers the filter cloth folding rod Ⅲ13-3, the filter cloth folding rod Ⅱ13-2 and the area between them. Rollers are installed on the brackets 15 on both sides of the filter plate. The rollers roll on the two filter press beams 9 symmetrically arranged on the filter press to drive the filter plate to move. Two hinges 14 are installed on the outer end faces of the brackets 15 on both sides of the box plate 25, the movable end membrane plate 23, the fixed end membrane plate 24, and the membrane plate 26. The brackets 15 on the same side are connected to the same hinge 14. The hinge 14 is composed of several long hole plates 14-1 and several hinge pins 14-2. One end of the hinge 14 is fixed on the movable end membrane plate 23, and the other end of the hinge 14 is fixed on the fixed end membrane plate 24, so that all filter plate groups can be opened one by one at a time.

[0015] A method for using a device for automatically unloading mud and flushing a high-pressure pancake plate and frame filter press, wherein a movable end diaphragm plate 23 is fixed on a movable end plate 20, and a fixed end diaphragm plate 24 is fixed on a fixed end plate 21. Before unloading mud, a main hydraulic cylinder pulls the movable end plate 20 and the movable end diaphragm plate 23 outward, and pulls the rear diaphragm plate 26 and box plate 25 in turn through a hinge 14, so that all mud cavities are opened and in a mud-unloading state.

[0016] Working principle: Start the stepper motor 5, and the power output shaft fixed on the stepper motor drives the lifting rotating shaft 2 on both sides of the filter plate to rotate through two 90° steering devices 1, thereby driving the two rows of lifting wheels to rotate inward or outward at the same time, and the lifting chain 8 meshed with the lifting wheel 4 drives the upper fixing frame 10 of the filter cloth and the lower fixing frame 12 of the filter cloth to move up and down, and at the same time drives the filter cloth 16 to move up and down.

[0017] The steps are as follows: Step 1, mud unloading: Under the action of the stepper motor 5, the inner side of the two rows of lifting wheels 4 rotates to make the upper fixing part 8-1 of the lifting chain 8 drive the filter cloth upper fixing frame 10 and the middle position of the filter cloth 16 to move downward at the same time, and the lower fixing part 8-2 of the lifting chain 8 drives the ends of the filter cloth I 16-1 and the filter cloth II 16-2 to move upward under the upward pulling force of the lifting chain, tightening the filter cloth that is loosened due to the downward movement of the filter cloth upper fixing frame 10 and the middle part of the filter cloth 16. The mud cake between the filter cloth I 16-1 and the filter cloth II 16-2 moves downward with the filter cloth, and the mud cake falls off under the blocking of the filter cloth folding frame 13 and the action of gravity, completing the mud unloading.

[0018] Step 2, reset: After the mud unloading is completed, the stepper motor 5 rotates in the opposite direction, and the lifting rotating shafts 2 on both sides above the filter plate drive the two rows of lifting wheels 4 to rotate outward at the same time, and the lower fixing piece 8-2 of the lifting chain 8 is loosened, so that the ends of the filter cloth I16-1 and the filter cloth II16-2 move downward, and at the same time, the upper fixing piece 8-1 of the lifting chain 8 lifts the filter cloth upper fixing frame 10 and the middle position of the filter cloth 16 to tighten the filter cloth I16-1 and the filter cloth II16-2 at both ends.

[0019] Step three, filter cloth cleaning: After the filter cloth is unloaded, and other auxiliary systems of the filter press are ready for flushing, the filter cloth 16 can be flushed. The flushing system is started, and flushing water enters from the water inlet 13-6 and is sprayed out through multiple nozzles 13-5 under the action of water pressure. The sprayed water covers the filter cloth and the filter cloth folding rod III 13-3, the filter cloth folding rod II 13-2 and the area between the two to complete the cleaning.

Claims

1. A device for automatic mud unloading and flushing of a high-pressure pancake plate-frame filter press, characterized in that: The invention comprises a 90° steering device (1), a lifting rotating shaft (2), a lifting wheel (4), a stepping motor (5), a power output shaft (7), a lifting chain (8), an upper filter cloth fixing frame (10), a lower filter cloth fixing frame (12), a filter cloth folding frame (13), and a filter cloth (16); the stepping motor (5) is arranged above a box plate (25) in the middle of a plurality of diaphragm plate frame filter plate groups, the power output shaft (7) passes through the stepping motor (5) and is fixed thereto, the active ends of the two 90° steering devices (1) are symmetrically arranged at the two ends of the power output shaft (7), and the driven ends are respectively arranged in the middle of the two lifting rotating shafts (2); a pair of lifting wheels (4) are symmetrically arranged on both sides above each box plate (25) of the filter plate group, and the two lifting rotating shafts (2) respectively pass through all the lifting wheels (4) in sequence; the upper fixing member (8-1) of the lifting chain (8) ) is arranged at the lower inner side of the lifting wheel (4), and the lifting chain (8) is meshed with the lifting wheel (4) upward and then vertically downward; the filter cloth upper fixing frame (10) is suspended on the upper fixing members (8-1) of the two corresponding lifting wheels (4) on both sides, and the filter cloth lower fixing frame (12) is suspended on the lower fixing members (8-2) of the two corresponding lifting wheels (4) on both sides; the folded filter cloth (16) is arranged between the filter cloth upper fixing frame (10) and the filter cloth lower fixing frame (12); the filter cloth folding frame (13) is respectively arranged at the bottom of each filter plate of the filter plate group, and a plurality of filter cloth folding frames (13) are aligned in a row; a plurality of nozzles (13-5) are arranged on the flushing water pipe (13-4) at the lower part of the filter cloth folding frame (13), one end of the flushing water pipe (13-4) is blocked, and a water inlet (13-6) is arranged at the other end of the flushing water pipe (13-4).

2. The automatic mud unloading and washing device for the high pressure pancake plate-frame filter press according to claim 1 is characterized in that: The upper end of the folded filter cloth (16) is laid on a filter cloth fixing rod I (10-1) of the filter cloth upper fixing frame (10); the end of the filter cloth I (16-1) on one side of the filter cloth (16) is arranged on a filter cloth fixing rod II (12-2) of the filter cloth lower fixing frame (12); and the end of the filter cloth II (16-2) on the other side is arranged on a filter cloth fixing rod III (12-3) of the filter cloth lower fixing frame (12).

3. The automatic mud unloading and washing device for high pressure pancake plate-frame filter press according to claim 1 is characterized in that: The filter cloth lower fixing frame (12) comprises two symmetrically arranged fixing plates I (12-1), filter cloth fixing rods III (12-3) and filter cloth fixing rods II (12-2), the filter cloth fixing rods III (12-3) and filter cloth fixing rods II (12-2) being arranged on both sides of the fixing plate I (12-1), and the filter cloth fixing rods III (12-3) being arranged above the filter cloth fixing rods II (12-2); the filter cloth folding frame (13) comprises two symmetrically arranged fixing plates II (13-1), filter cloth folding rods III (13-3), filter cloth folding rods II (13-2) and A flushing water pipe (13-4); the two ends of the filter cloth folding rod III (13-3) and the filter cloth folding rod II (13-2) are respectively arranged at the lower part of the two fixed plates II (13-1), and the filter cloth folding rod III (13-3) is located above the filter cloth folding rod II (13-2); the filter cloth fixing rod II (12-2) corresponds to the filter cloth folding rod II (13-2), and the filter cloth fixing rod III (12-3) corresponds to the filter cloth folding rod III (13-3); the two ends of the flushing water pipe (13-4) are respectively arranged at the bottom end of the two fixed plates II (13-1).

4. A method for using a device for automatically unloading mud and flushing a high-pressure pancake plate-frame filter press, firstly fixing a movable end membrane plate (23) on a movable end plate (20), and fixing a fixed end membrane plate (24) on a fixed end plate (21); when the filter press is finished filtering, the main hydraulic cylinder of the filter press pulls the movable end plate (20) outward, and the movable end membrane plate (23) fixed on the movable end plate (20) is pulled apart by hinges (14) installed on its left and right sides, and the conditions for unloading mud are met at this time; it is characterized in that: The following steps are involved: Step 1, mud unloading: start the stepper motor (5), the stepper motor (5) drives the power output shaft (7) to rotate, the power output shaft (7) drives the two lifting rotating shafts (2) located on both sides of the filter plate to rotate through the 90° steering devices (1) at both ends, the two rows of lifting wheels (4) rotate inward at the same time and pull the lifting chain (8) inward, the upper fixing parts (8-1) on both sides of the lifting chain (8) gradually move downward, so that the filter cloth (16) moves downward and drives the lifting chains (8) on both sides to move upward, driving the lower fixing parts of the filter cloth The fixed frame (12) moves upward, and the end of the filter cloth I (16-1) and the end of the filter cloth II (16-2) fixed on the lower filter cloth fixed frame (12) move upward and tighten the filter cloth (16) which gradually moves downward due to the downward movement of the upper fixing member (8-1). The downward moving filter cloth (16) drives the mud cake sandwiched between the filter cloth I (16-1) and the filter cloth II (16-2) to move downward. Due to the dead weight of the mud cake, the mud cake separates from the filter cloth I (16-1) and the filter cloth II (16-2) and falls, thereby completing the mud unloading; Step 2, resetting: when the mud unloading is completed, the stepper motor (5) changes the rotation direction, the two lifting rotating shafts (2) rotate outward at the same time, and pull the lifting chain (8) outward, the filter cloth lower fixing frame (12) moves downward to make the filter cloth (16) have a tendency to relax, and at the same time, the upper fixing parts (8-1) on both sides gradually move upward, driving the filter cloth (16) to move upward; Step 3: cleaning the filter cloth: when the filter cloth (16) needs to be cleaned, the water inlet (13-6) switch is turned on, and the cleaning water enters the cleaning water pipe (13-4) corresponding to each mud cavity through the water inlet (13-6), and is sprayed out through multiple nozzles (13-5), so that the filter cloth and the filter cloth folding rod III (13-3), the filter cloth folding rod II (13-2) and the area between the two are cleaned.

Images