A drag-bag type scraper centrifuge

Abstract

The application discloses a pull-bag type scraper centrifuge and relates to the technical field of pull-bag type centrifuges.The centrifuge top cover is provided with an inclined disc distributor at the bottom end, a feeding inlet is arranged at the top end of the centrifuge top cover and located at one side of the inclined disc distributor, a material level detection device is fixedly connected to one side of the bottom end of the centrifuge top cover, a washing pipe is installed at the bottom end of the other side of the centrifuge top cover, a scraper is installed at one side of the washing pipe, a centrifuge main body is arranged at the bottom end of the centrifuge top cover, a rotating base is installed in the middle of the inner cavity of the centrifuge main body, filter cloth devices are arranged in the inner cavity of the centrifuge main body and located between the rotating bases, and the filter cloth devices and the clamping cloth ring are in a loosened state, so that the filter cloth main body is twisted under rotation, the effect of the pull-bag operation is better, and the residual amount is small.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pull-bag type centrifuges, in particular to a pull-bag type scraper centrifuge. BACKGROUND

[0002] The pull-bag type scraper centrifuge is a batch processing separation equipment, and the filter bag is in a regenerated state after unloading, so that the filtering effect is good, the efficiency is high, the influence of the residual filter cake layer on the material filtering performance is effectively reduced, material separation cross contamination is avoided, and the working principle of the pull-bag type scraper centrifuge is that under the action of centrifugal force, solid particles in the material to be separated are settled on the inner wall of the drum to form a filter cake layer, and liquid flows out through the filter cake layer and the pores on the drum wall to realize solid-liquid separation. The centrifuge has the advantages of large processing capacity, good separation effect, simple operation and the like, and is widely used in solid-liquid separation processes in the chemical, pharmaceutical, food and other industries.

[0003] The existing pull-bag type scraper centrifuge has the following problems: firstly, the existing technology needs to manually install and fix the filter cloth with a rope, or to fix it on the drum, which is complicated to operate, and there is still a lot of material left on the surface of the pull-bag during the pull-bag operation, therefore, the present application provides a pull-bag type scraper centrifuge. SUMMARY

[0004] In view of the above existing problems, the present application is proposed.

[0005] Therefore, the present application aims to provide a pull-bag type scraper centrifuge to solve the above problems.

[0006] The present application provides the following technical solutions:

[0007] The utility model provides a kind of pull bag type doctor centrifuge, including centrifuge top cover, the bottom end of the centrifuge top cover is provided with inclined plate distributor, the top end of the centrifuge top cover is located the one side of inclined plate distributor and is provided with inlet, the bottom end side of the centrifuge top cover is fixedly connected with material level detection device, the bottom end of the centrifuge top cover is located the other side of inclined plate distributor and is equipped with washing pipe, the top end of the centrifuge top cover is located the one side of washing pipe and is equipped with doctor, the bottom end of the centrifuge top cover is equipped with centrifuge main body, rotating base is installed in the middle part of the inner chamber of centrifuge main body, filter cloth device is arranged between the inner chamber of centrifuge main body and rotating base, filter cloth main body is installed at the bottom end of filter cloth device, clamp ring is installed at the bottom end of filter cloth main body, rotating drum is provided at the bottom end outside of filter cloth device, filter cloth device is inverted "concave", the top end of rotating drum is located the middle part of inverted "concave" of filter cloth device, the top end of the one side of inverted "concave" of filter cloth device at rotating drum bottom end outer wall is equipped with equidistantly arranged press button, press button is movably connected with push rod in the inside, the middle part of push rod is fixedly connected with limit rod penetrating push rod on the one side close to top end, press groove is opened at the limit rod of filter cloth device, stretch spring is installed in the limit rod of push rod and in press groove, the top end of stretch spring is fixedly connected with the limit rod of push rod, the bottom end of stretch spring is fixedly connected with the bottom end of press groove, the bottom of push rod is movably connected with push block, retracting groove is opened at the bottom end of push block, the one side close to the top end of rotating drum is movably connected with clamping main body block in retracting groove, stress end is opened at the middle part of the one side close to retracting groove of clamping main body block, clamping main body block is movably connected with push block, clamping main body block is equipped with equidistantly arranged clamping block on the one side close to the top end of rotating drum, return spring is installed in the return groove between two adjacent clamping blocks of clamping main body block, the one side of return spring is close to the stress end of clamping main body block, the other side of return spring is close to the inner wall of rotating drum, the top end outer wall of rotating drum is equipped with clasp.

[0008] Further, the middle part of the other side bottom end of the inverted "concave" of filter cloth device is equipped with equidistantly arranged clamping groove, clamping fastening groove is opened on the one side of filter cloth device clamping groove, clamping fastening block is movably connected in clamping fastening groove, bolt is arranged at the one side close to rotating drum of the one side of filter cloth device inverted "concave", bolt is movably connected with clamping fastening block at filter cloth device clamping groove, and clamping fastening block is fixedly connected with the top end of filter cloth main body under rotation.

[0009] Further, the bottom end of the filter cloth body is provided with a cloth clamping ring, the top end of the cloth clamping ring is provided with a cloth clamping cover, the cloth clamping cover and the cloth clamping ring are combined into a cloth clamping groove on the side close to the filter cloth body, the cloth clamping cover and the cloth clamping ring are fixedly connected through threads, and the bottom end of the filter cloth body is clamped and fixed by the fixed connection of the cloth clamping cover and the cloth clamping ring.

[0010] Further, the two sides of the pressing groove are provided with clamping pressing grooves, the top end of the clamping pressing groove in the pressing groove is provided with a torsion energy storage groove between the other clamping pressing groove, the bottom end of the clamping pressing groove in the middle is provided with a pressing clamping groove, and the limiting rod can be movably arranged in the torsion energy storage grooves, the clamping pressing grooves and the torsion energy storage grooves on the two sides.

[0011] Further, the bottom end of the centrifuge top cover is provided with a cleaning blade on the side of the cutter head of the scraper, the cleaning blade is tightly attached to the cutter head of the scraper at the blade end of the cleaning blade, the washing pipe is provided with equidistant water outlets on the side close to the rotating drum, and the water outlet of the washing pipe is aligned with the cleaning blade.

[0012] Further, the retraction groove is also provided with a groove close to the drum for the extension of the clamping block device, the retraction groove is not provided with a groove at the homing spring, and the clamping block is used for clamping the clamping ring of the rotating drum after extension.

[0013] Further, the bottom end of the cloth clamping ring is connected with equidistantly arranged hooks through a hinge, the hooks are "J"-shaped, the "J"-shaped part of the hooks is provided with a hook groove, the rotating base is provided with a filter cloth supporting ring at the bottom end of the cloth clamping ring, the outer side of the filter cloth supporting ring is provided with a filter cloth outer ring, the filter cloth outer ring and the filter cloth supporting ring are fixedly connected through the filter cloth supporting rod arranged therebetween, and the ratio of the width of the hook groove to the width of the filter cloth outer ring of the filter cloth supporting ring is 6:5.

[0014] Further, the filter cloth body is wrapped with an elastic band at the cloth clamping groove, the pushing block is provided with a pushing end on the side close to the clamping main block, the bottom end of the pushing block is provided with a limiting end, the top end of the stressed end is provided with an assisting end, and the assisting end and the limiting end are movably connected in cooperation.

[0015] In the above technical solution, the present application provides technical effects and advantages:

[0016] 1、The filter cloth device and the cloth clamping ring are used for fastening the filter cloth body in a relaxed state, so that the filter cloth body is twisted under rotation, the effect of bag pulling operation is better, and the residual amount is small.

[0017] 2, the present application is through the filter cloth device of "concave" recess and the top of the drum fit, at this time will push button push, so that the limit rod is located in the bottom of pressing groove, at this time due to the torsion of the extension spring reserved will automatically push the rod to press the card slot, so that the push block push end push force end, make force end push stuck main block to move, so that the snap ring of the drum, simple fixing method, later from the device on the disassembly speed, at the same time, the present application can provide multiple filter cloth device for replacement. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the present application or prior art, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0019] Figure 1 It is the overall structure schematic diagram of the present application;

[0020] Figure 2 It is the overall structure schematic diagram of the present application after the centrifuge top cover is opened;

[0021] Figure 3 It is the centrifuge main body structure exploded schematic diagram of the present application;

[0022] Figure 4 It is the filter cloth device structure exploded schematic diagram of the present application;

[0023] Figure 5 It is the filter cloth device sectional structure schematic diagram of the present application;

[0024] Figure 6 It is the A part enlarged schematic diagram of the present application; Figure 5

[0025] Figure 7 It is the B part enlarged schematic diagram of the present application; Figure 5

[0026] Figure 8 It is the centrifuge main body sectional view schematic diagram of the present application;

[0027] Figure 9 It is the C part enlarged schematic diagram of the present application; Figure 8

[0028] Figure 10 It is the D part enlarged schematic diagram of the present application; Figure 8

[0029] It is the E part enlarged schematic diagram of the present application; Figure 11 Figure 9 It is the E part enlarged schematic diagram of the present application;​​​​

[0030] Figure 12 A cross-sectional view of the pressing groove of the present application;

[0031] Figure 13 A part removal schematic view of the cross-sectional view of the pressing groove of the present application.

[0032] Figure 14 A top view schematic view of the cross-sectional view of the pressing groove of the present application;

[0033] Figure 15 A schematic view of the structure of the stuck main body block of the present application;

[0034] Figure 16 A schematic view of the cleaning blade and scraper of the present application;

[0035] Figure 17 A schematic view of the cross-sectional structure of the cloth clamping ring and cloth clamping cover of the present application.

[0036] Figure 18 A schematic view of the structure of the filter cloth support ring of the present application;

[0037] Figure 19 A schematic view of the second embodiment of the present application.

[0038] Explanation of reference signs:

[0039] 1, centrifuge top cover; 101, swash plate distributor; 1011, inlet; 102, level detection device; 103, washing pipe; 104, scraper; 1041, cleaning blade; 2, centrifuge main body; 201, rotating base; 202, drum; 2021, snap ring; 203, filter cloth device; 2031, pressing button; 2032, pushing rod; 2033, limiting rod; 2034, tension spring; 20341, pressing groove; 20342, torsion energy storage groove; 20343, clamping pressing groove; 20344, pressing clamping groove; 2035, pushing block; 20351, pushing end; 20352, limiting end; 2036, retraction groove; 2037, stressed end; 20371, assisting end; 2038, homing groove; 20381, homing spring; 2039, stuck main body block; 20391, stuck block; 204, filter cloth main body; 2041, clamping fastening block; 2042, clamping fastening groove; 2043, bolt; 205, cloth clamping ring; 2051, cloth clamping cover; 2052, cloth clamping groove; 206, hook; 2061, hook groove; 207, filter cloth support ring; 2071, filter cloth outer ring; 2072, filter cloth support rod. DETAILED DESCRIPTION

[0040] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings.

[0041] The application discloses a pull-bag type scraper centrifuge.

[0042] The application provides a pull-bag type scraper centrifuge, as shown in the accompanying drawings. Figures 1-18 The application provides a pull-bag type scraper centrifuge, as shown in the accompanying drawings.

[0043] The embodiment one is a pull-bag type scraper centrifuge, which comprises a centrifuge top cover 1, the bottom end of the centrifuge top cover 1 is provided with a inclined plate distributor 101, the top end of the centrifuge top cover 1 is provided with a feeding port 1011 on the side of the inclined plate distributor 101, the bottom end of the centrifuge top cover 1 is fixedly connected with a material level detection device 102 on one side, a washing pipe 103 is installed on the bottom end of the other side of the centrifuge top cover 1, a scraper 104 is installed on one side of the washing pipe 103, the bottom end of the centrifuge top cover 1 is provided with a centrifuge main body 2, a rotating base 201 is installed in the middle of the inner cavity of the centrifuge main body 2, a filter cloth device 203 is arranged between the rotating base 201 in the inner cavity of the centrifuge main body 2, a filter cloth main body 204 is installed at the bottom end of the filter cloth device 203, a cloth clamping ring 205 is installed at the bottom end of the filter cloth main body 204, a rotary drum 202 is arranged at the bottom end of the outer side of the filter cloth device 203, the filter cloth device 203 is in the shape of an inverted "concave", the top end of the rotary drum 202 is located in the middle of the inverted "concave" of the filter cloth device 203, a plurality of pressing buttons 2031 are arranged at the top end of the inverted "concave" side of the filter cloth device 203, a push rod 2032 is movably connected in the pressing button 2031, a limiting rod 2033 penetrating through the push rod 2032 is fixedly connected to the side of the middle of the push rod 2032, a pressing groove 20341 is arranged at the position of the limiting rod 2033 of the filter cloth device 203, a stretching spring 2034 is installed in the limiting rod 2033 and in the pressing groove 20341 of the push rod 2032, the top end of the stretching spring 2034 is fixedly connected with the limiting rod 2033 of the push rod 2032, the bottom end of the stretching spring 2034 is fixedly connected with the bottom end of the pressing groove 20341, a push block 2035 is movably connected to the bottom end of the push rod 2032, a retraction groove 2036 is arranged at the bottom end of the push block 2035, a clamping main block 2039 is movably connected to the side close to the top end of the rotary drum 202, a stress end 2037 is arranged at the middle of the side close to the retraction groove 2036 of the clamping main block 2039, the stress end 2037 is movably connected with the push block 2035, a plurality of clamping blocks 20391 are arranged at the side close to the top end of the rotary drum 202 of the clamping main block 2039, a homing slot 2038 is arranged between two adjacent clamping blocks 20391 of the clamping main block 2039, a homing spring 20381 is installed in the homing slot 2038, one side of the homing spring 20381 is close to the stress end 2037 of the clamping main block 2039, the other side of the homing spring 20381 is close to the inner wall of the rotary drum 202, a clamping ring 2021 is arranged at the top end of the outer wall of the rotary drum 202, the homing spring 20381 needs to have a certain degree of torsion when being installed, which can drive the limiting rod 2033 to deflect in the direction of the pressing groove 20344 during work, so as to control the clamping main block 2039 from being unable to clamp the clamping ring 2021.

[0044] Wherein, the inverted "concave" shape of the other side of the filter cloth device 203 bottom end is provided with an equal distance arranged clamping groove, the filter cloth device 203 clamping groove is provided with a clamping fastening groove 2042 on one side, the clamping fastening groove 2042 is movably connected with clamping fastening block 2041, the filter cloth device 203 inverted "concave" shape is provided with bolt 2043 near the clamping groove on one side of the drum 202, the filter cloth device 203 clamping groove bolt 2043 is through the activity of clamping fastening block 2041, clamping fastening block 2041 is pushed to fix the connection of the top end of the filter cloth main body 204 under the rotation.

[0045] Wherein, the bottom end of the filter cloth main body 204 is provided with a cloth clamping ring 205, the top end of the cloth clamping ring 205 is provided with a cloth clamping cover 2051, the cloth clamping cover 2051 and the cloth clamping ring 205 are combined into a cloth clamping groove 2052 on the side close to the filter cloth main body 204, the cloth clamping cover 2051 and the cloth clamping ring 205 are fixedly connected by screw thread, the bottom end of the filter cloth main body 204 is clamped and fixedly connected by the fixed connection of the cloth clamping cover 2051 and the cloth clamping ring 205.

[0046] Wherein, the two sides of the pressing groove 20341 are provided with clamping pressing grooves 20343, the top end of the clamping pressing groove 20343 in the pressing groove 20341 is provided with a torsion energy storage groove 20342 between the other clamping pressing groove 20343, the bottom end of the clamping pressing groove 20343 in the middle is provided with a pressing clamping groove 20344, the limit rod 2033 can be located in the two sides of the torsion energy storage groove 20342, the clamping pressing groove 20343 and the torsion energy storage groove 20342.

[0047] Wherein, the bottom end of the centrifuge top cover 1 is provided with a cleaning blade 1041 on the side of the cutter head of the scraper 104, the cleaning blade 1041 is tightly attached to the cutter head of the scraper 104 at the bottom blade end of the cleaning blade 1041, the washing pipe 103 is provided with equidistant water outlets on the side close to the drum 202, the water outlet of the washing pipe 103 is provided with an alignment cleaning blade 1041.

[0048] Wherein, the retraction groove 2036 is also provided with a clamping block 20391 extending out of the filter cloth device 203 close to the drum 202, the retraction groove 2036 is not provided with a slot at the homing spring 20381, the clamping block 20391 is clamped to the clamping ring 2021 of the drum 202 after extending out.

[0049] Wherein, the bottom end of the cloth clamping ring 205 is connected with equidistantly arranged hooks 206 through a hinge, the hooks 206 are "J" shaped, the "J" shaped part of the hooks 206 is provided with a hook groove 2061, the rotating base 201 is provided with a filter cloth supporting ring 207 at the bottom end of the cloth clamping ring 205, the outer side of the filter cloth supporting ring 207 is provided with a filter cloth outer ring 2071, the filter cloth outer ring 2071 and the filter cloth supporting ring 207 are fixedly connected through the filter cloth supporting rod 2072 arranged therebetween, the width ratio of the hook groove 2061 to the filter cloth outer ring 2071 of the filter cloth supporting ring 207 is 6:5, and the weight of the cloth clamping ring 205 is 5-10 times greater than the weight of the filter cloth main body 204 to ensure that the cloth clamping ring 205 does not get stuck when it is floating up during rotation.

[0050] Wherein, the filter cloth main body 204 is wrapped with an elastic band at the cloth clamping groove 2052, the pushing block 2035 is provided with a pushing end 20351 on one side close to the clamping main block 2039, the bottom end of the pushing block 2035 is provided with a limiting end 20352, the top end of the stress end 2037 is provided with an assisting end 20371, the assisting end 20371 and the limiting end 20352 are movably connected in cooperation, and the assisting end 20371 and the limiting end 20352 are used to limit the situation that the pushing end 20351 cannot push the clamping main block 2039 due to wear.

[0051] Wherein, the inlet 1011, the material level detection device 102, the swash plate distributor 101, the washing pipe 103 and the scraper 104 are all prior art of the bag-hanging scraper centrifuge, and the contents of the prior art are not described in detail in the application, and the mother liquor discharge and the material collection are not within the protection scope of the application and are not described in detail.

[0052] Example two: if the cloth clamping ring 205 and the cloth clamping cover 2051 are not heavy, a solution as shown in Figure 19 The torsional spring is added to the connection between the hook 206 and the cloth clamping ring 205, so that the hook 206 and the filter cloth supporting ring 207 are pre-clamped, that is, as long as the distance between the filter cloth device 203 and the hook 206 is shortened by rotation, the hook groove 2061 of the hook 206 in the pre-clamped state directly clamps the filter cloth supporting ring 207, so that the torsional force is generated in the state of separation.

[0053] Working principle of the application:

[0054] In the use of the bag type scraper centrifuge, the power supply of the device is started first, so that the rotating base 201, the rotating drum 202, the filter cloth device 203, the filter cloth body 204, the filter cloth ring 205 and the filter cloth support ring 207 rotate. When rotating, due to the action of centrifugal force, the hook 206 is connected to the filter cloth ring 205 through the hinge connection, so that it moves away from the rotation center of the rotating base 201 under the action of centrifugal force, so that the outer ring 2071 of the filter cloth support ring 207 is located above the hook groove 2061 of the hook 206. At the same time, when the hook groove 2061 hooks the outer ring 2071 of the filter cloth during rotation, the filter cloth body 204 between the filter cloth device 203 and the filter cloth ring 205 is twisted. After rotating to the specified speed, the material to be separated is poured into the inlet 1011 at this time, and the material to be separated is poured into the inclined disc distributor 101, which causes the material to be separated to impact on the inclined disc distributor 101. Due to the rotation of the inclined disc distributor 101, the material is scattered on the filter cloth body 204. With continuous rotation, the material to be separated can be scattered on the rotating drum 202, so that the liquid is discharged by continuous rotation. Continue to rotate, when the surface of the filter cloth body 204 accumulates the thickness of the filtered material to touch the material level detection device 102, stop feeding at this time. At this time, the washing pipe 103 is opened, so that the washing pipe 103 washes the material filtered on the surface of the filter cloth body 204. When washing, the water outlet of the washing pipe 103 at the cleaning blade 1041 will flush the cleaning blade 1041. After flushing, drying treatment is carried out. After the equipment is dried to the specified drying degree, the scraper 104 is controlled to lower the knife. After the scraper 104 lowers the knife, the material on the surface of the filter cloth body 204 after washing and drying is scraped off. When scraping, the knife is slowly lowered. With the lowering of the knife, part of the material on the surface of the filter cloth body 204 is scraped off and falls into the gap of the filter cloth support ring 207, so as to be collected at the bottom of the centrifugal body 2. When the scraping operation of the scraper 104 is completed, the knife is collected. When the knife is collected, the blade end of the cleaning blade 1041 is in close contact with the cutter head of the scraper 104, so that the cleaning blade 1041 cuts the surface of the cutter head of the scraper 104 after the scraper 104 is collected, preventing the material from being adhered to the scraper 104;

[0055] At this time, the bag is pulled, and when the bag is pulled, the base 201 is rotated to pull the filter cloth support ring 207 quickly downward. With the quick downward movement of the filter cloth support ring 207, the separated material attached to the surface of the filter cloth body 204 is shaken off. At the same time, due to the active relationship between the hook 206 and the filter cloth support ring 207, the filter cloth body 204 twists during the centrifugal operation. The degree of twisting depends on the distance between the two filter cloth support rods 2072 of the filter cloth support ring 207. Due to the twisting force generated by itself, the filter cloth support ring 207 is quickly straightened under the pulling force, thereby releasing a contraction force and a rotating force during the bag pulling operation, so that the material is more easily shaken off, thereby reducing the residual material on the filter cloth, and thus reaching the bottom end of the centrifugal main body 2 for collection, thereby completing the working steps.

[0056] In use, if the filter cloth needs to be replaced, open the centrifuge top cover 1, replace the filter bag in the centrifuge top cover 1, when replacing, press the press button 2031 on the surface of the filter cloth device 203, after pressing the press button 2031, the push rod 2032 moves downward, pushing the limiting rod 2033 to move, because the catch block 20391 and the snap ring 2021 are in a clamped state when the device is initially installed, the limiting rod 2033 is located in the press clamping groove 20344 of the press groove 20341, at this time, by pressing, the tension spring 2034 releases the torsional force, the limiting rod 2033 is released from the press clamping groove 20344, at this time, release the press button 2031, the limiting rod 2033 reaches the junction of the torsion energy storage groove 20342 and the clamping press groove 20343, at this time, the push block 2035 is released from the extrusion of the force receiving end 2037, the catch main block 2039 is pushed back into the back shrink groove 2036 by the return spring 20381, with the assistance of the limiting end 20352 and the force receiving end 2037 of the catch main block 2039, the catch main block 2039 cannot continue to be pushed back into the back shrink groove 2036, at this time, the hook 206 is removed from the filter cloth support ring 207, if the cloth clamping ring 205 is heavy, the hook 206 will naturally hang down under the action of the centrifugal force, so it cannot be connected with the filter cloth outer ring 2071 of the filter cloth support ring 207, it can be directly taken out vertically, after taking out, replace the filter cloth main body 204, at this time, rotate the bolt 2043 at the clamping and fastening block 2041, so that the clamping and fastening groove 2042 is pulled back, so that the extrusion of the filter cloth main body 204 is released, so that the filter cloth main body 204 leaves the clamping groove, so that the filter cloth main body 204 is disconnected with the filter cloth device 203, at this time, rotate the cloth clamping cover 2051, at this time, the cloth clamping cover 2051 and the filter cloth main body 204 bottom end clamped by the cloth clamping ring 205 leave the cloth clamping groove 2052, thus completing the disassembly of the filter cloth;

[0057] Assemble the filter cloth, insert the top end of the new filter cloth main body 204 into the clamping groove of the filter cloth device 203, at this time, rotate the bolt 2043 at the clamping groove, tighten it, when installing the bottom end of the new filter cloth main body 204, wrap the rubber band at the bottom end of the new filter cloth main body 204 around the cloth clamping groove 2052 of the cloth clamping ring 205, at this time, rotate the cloth clamping cover 2051, so that the cloth clamping cover 2051 and the cloth clamping groove 2052 of the cloth clamping ring 205 clamp the bottom end of the filter cloth main body 204, which means that the filter cloth can be prepared in multiple copies;

[0058] The installation is performed by passing the rotating base 201 through the middle part of the cloth clamping ring 205, at this time, the cloth clamping ring 205 is placed on the inner side of the filter cloth support ring 207, at this time, two cases are divided, if the cloth clamping ring 205 is heavier, it is directly placed, if the hook 206 of the torsional spring is used, it needs to be manually buckled on the outer ring 2071 of the filter cloth, at this time, the installation of the filter cloth device 203 and the rotating drum 202 is performed, at this time, the inverted "concave" recess of the filter cloth device 203 is fitted with the top end of the rotating drum 202, at this time, the push button 2031 is pushed, so that the limiting rod 2033 is located at the bottom end of the pressing groove 20341, at this time, the torsion force reserved by the tension spring 2034 will automatically turn the push rod 2032 to the pressing clamping groove 20344, so that the push block 2035 pushes the stressed end 2037 by the pushing end 20351, the stressed end 2037 pushes the clamping main block 2039 to move, so as to clamp the clamping ring 2021 of the rotating drum 202, thus the assembly is completed, since the fastening of the filter cloth device 203 and the cloth clamping ring 205 to the filter cloth main body 204 is in a relaxed state, the filter cloth main body 204 will be twisted under rotation, so that the effect of the bag pulling operation is better, and the residual is less.

[0059] The above only describes some exemplary embodiments of the present application by way of illustration, and it is needless to say that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present application. Therefore, the above figures and description are illustrative in nature and should not be understood as limiting the scope of protection of the claims of the present application.

Claims

1. A pull-bag type scraper centrifuge, comprising a centrifuge cover, the bottom end of the centrifuge cover is provided with a swash plate distributor, the top end of the centrifuge cover is provided with a feeding port on one side of the swash plate distributor, the bottom end of the centrifuge cover is fixedly connected with a material level detection device on one side, the centrifuge cover is installed with a washing pipe at the bottom end on the other side of the swash plate distributor, the centrifuge cover is installed with a scraper on one side of the washing pipe, the bottom end of the centrifuge cover is provided with a centrifuge main body, a rotating base is installed in the middle of the inner cavity of the centrifuge main body, characterized in that, The inner cavity of the centrifugal main body is provided with a filter cloth device between the rotating bases, the bottom end of the filter cloth device is provided with a filter cloth main body, the bottom end of the filter cloth main body is provided with a cloth clamping ring, the outer bottom end of the filter cloth device is provided with a rotating drum, the filter cloth device is inverted "concave", the top end of the rotating drum is located in the middle of the inverted "concave" of the filter cloth device, the top end of the filter cloth device is provided with a plurality of pressing buttons arranged at equal intervals on one side of the inverted "concave" of the outer wall at the bottom end of the rotating drum, the inside of the pressing button is movably connected with a push rod, the middle part of the push rod is fixedly connected with a limiting rod penetrating through the push rod, the filter cloth device is provided with a pressing groove at the position of the limiting rod, a tension spring is installed in the pressing groove, the top end of the tension spring is fixedly connected with the limiting rod of the push rod, the bottom end of the tension spring is fixedly connected with the bottom end of the pressing groove, the bottom of the push rod is movably connected with a push block, the bottom end of the push block is provided with a retraction groove, the retraction groove is movably connected with a clamping main block on one side close to the top end of the rotating drum, the push block is provided with a push end on one side close to the clamping main block, the clamping main block is provided with a stress end in the middle on one side close to the retraction groove, the stress end is movably connected with the push block, the clamping main block is provided with a plurality of clamping blocks arranged at equal intervals on one side close to the top end of the rotating drum, the clamping main block is provided with a homing spring in the homing groove between any two adjacent clamping blocks, one side of the homing spring is close to the stress end of the clamping main block, the other side of the homing spring is close to the inner wall of the rotating drum, the top end of the rotating drum is provided with a clamping ring on the outer wall; the pressing groove is provided with a clamping pressing groove on both sides, the top end of the clamping pressing groove in the pressing groove is provided with a torsion energy storage groove between the other clamping pressing groove, the bottom end of the clamping pressing groove in the middle is provided with a pressing clamping groove, the limiting rod can move in the torsion energy storage groove, the clamping pressing groove and the torsion energy storage groove on both sides; When the filter cloth device and the rotating drum are installed, the recess of the inverted "concave" of the filter cloth device is attached to the top end of the rotating drum, the pressing button is pushed, so that the limiting rod is located at the bottom end of the pressing groove, at this time, the torsion force reserved by the tension spring will automatically turn the push rod to the pressing clamping groove, so that the push block pushes the stress end by the push end, the stress end pushes the clamping main block to move, so that the clamping ring of the rotating drum is clamped, thus the assembly is completed; When the filter cloth is replaced, the pressing button on the surface of the filter cloth device is pressed first, after the pressing button is pressed, the push rod will move downward, when the push rod moves downward, the limiting rod will move, because the clamping block and the clamping ring are in the clamping state at the beginning, the limiting rod is located in the pressing clamping groove of the pressing groove at this time, by pressing, the tension spring releases the torsion force, so that the limiting rod is separated from the pressing clamping groove, at this time, the pressing button is released, so that the limiting rod reaches the junction of the torsion energy storage groove and the clamping pressing groove, at this time, the push block will be released from the extrusion of the stress end, so that the clamping main block is bounced into the retraction groove by the homing spring, and the filter cloth main body is replaced.

2. The draw-bag doctor centrifuge of claim 1, wherein, The middle part of the concave-shaped other side bottom end of the filter cloth device is provided with equidistantly arranged clamping grooves, one side of the clamping groove of the filter cloth device is provided with a clamping fastening groove, a clamping fastening block is movably connected in the clamping fastening groove, and a bolt is arranged on one side of the concave-shaped clamping groove of the filter cloth device close to the rotating drum.

3. The draw-bag doctor centrifuge of claim 1, wherein, The top end of the cloth clamping ring is provided with a cloth clamping cover, the cloth clamping cover and the cloth clamping ring are combined into a cloth clamping groove on the side close to the filter cloth body, and the cloth clamping cover and the cloth clamping ring are fixedly connected through threads. The bottom end of the filter cloth body is clamped and fixedly connected by the fixed connection of the cloth clamping cover and the cloth clamping ring.

4. The draw-bag doctor centrifuge of claim 1, wherein, The top end of the centrifuge top cover is provided with a cleaning blade on the side of the cutter head of the scraper, the cleaning blade is tightly attached to the cutter head of the scraper at the bottom end of the cleaning blade, the washing pipe is provided with equidistant water outlets on the side close to the rotating drum, and the water outlet of the washing pipe is aligned with the cleaning blade.

5. The draw-bag doctor centrifuge of claim 1, wherein, The retraction groove is also provided with a clamping block extending out of the filter cloth device close to the rotating drum, and the retraction groove is not provided with a slot at the homing spring. The clamping block is clamped to the clamping ring of the rotating drum after extending out.

6. The draw-bag doctor centrifuge of claim 1, wherein, The bottom end of the cloth clamping ring is connected with equidistantly arranged hooks through a hinge, the hooks are "J"-shaped, the "J"-shaped part of the hooks is provided with a hook groove, the rotating base is provided with a filter cloth supporting ring at the bottom end of the cloth clamping ring, the outer side of the filter cloth supporting ring is provided with a filter cloth outer ring, the filter cloth outer ring and the filter cloth supporting ring are fixedly connected through the filter cloth supporting rod arranged therebetween, and the width ratio of the hook groove to the filter cloth outer ring of the filter cloth supporting ring is 6:

5.

7. The draw-bag doctor centrifuge of claim 3, wherein, The filter cloth body is wrapped with a rubber band at the cloth clamping groove, the bottom end of the pushing block is provided with a limiting end, the top end of the stressed end is provided with an assisting end, and the assisting end and the limiting end are movably connected.

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