Horizontal decanter centrifuge

Abstract

The application discloses a horizontal sedimentation filtration centrifuge, which comprises an inner rotating drum and an outer rotating drum, a cleaning filter cylinder is arranged on the inner spiral cylinder body, a filter cloth supporting cylinder is arranged in the cleaning filter cylinder, at least one filter cloth cleaning cavity, at least one filter cloth tensioning cavity and at least one filter cloth transmission cavity are arranged on the cleaning filter cylinder in the circumferential direction, a pair of guide rollers is arranged at the bottom opening of each of the filter cloth cleaning cavity, the filter cloth tensioning cavity and the filter cloth transmission cavity, and a scraper is arranged between the pair of guide rollers, a transmission shaft and a filter cloth pressing device are arranged in the filter cloth transmission cavity, the transmission shaft extends out of the filter cloth transmission cavity and is provided with a driven gear, a driving gear meshing with the driven gear is arranged on the outer rotating drum, a filter cloth cleaning device is arranged in the filter cloth cleaning cavity, and a filter cloth tensioning device is arranged in the filter cloth tensioning cavity. The horizontal sedimentation filtration centrifuge can clean the filter cloth on line, and the phenomenon that the filter cloth is blocked and cannot be drained is greatly reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to a horizontal centrifuge, in particular to a horizontal sedimentation filtration centrifuge. BACKGROUND

[0002] At present, the traditional horizontal sedimentation filtration centrifuge cannot clean the filter cloth on line because no on-line cleaning device is arranged, so that the mesh of the filter cloth will be blocked after a period of use, and the material cannot be dewatered. Therefore, the filter cloth has to be replaced after shutdown, which increases the maintenance cost on the one hand, and because the replacement of the filter cloth is relatively troublesome and requires a long time, the production capacity is reduced and the production cost is increased on the other hand. SUMMARY

[0003] One of the technical problems to be solved by the present application is to provide a horizontal sedimentation filtration centrifuge which can clean the filter cloth on line.

[0004] To solve the above technical problems, the technical scheme adopted by the present application is as follows: a horizontal sedimentation and filtration centrifuge, comprising a base, an outer rotating drum, an inner spiral cylinder, a spline shaft, an outer rotating drum flange shaft movably arranged in the base, a differential gear arranged on the base, inner spiral blades arranged on the inner spiral cylinder, and outer spiral blades arranged on the outer rotating drum, wherein the outer rotating drum flange shaft is a hollow structure, the spline shaft is movably arranged in the outer rotating drum flange shaft, corresponding ends of the spline shaft and the outer rotating drum flange shaft are connected with corresponding output portions of the differential gear, a corresponding end of the inner spiral cylinder is connected with the spline shaft and movably supported on the outer rotating drum flange shaft, the other end of the inner spiral cylinder is arranged in the base through an inner spiral cylinder support seat, a corresponding end of the outer rotating drum is arranged on the outer rotating drum flange shaft, and the other end of the outer rotating drum is movably supported on the inner spiral cylinder; a cleaning and filtering device is arranged on the inner spiral cylinder support seat, the cleaning and filtering device comprises a cleaning and filtering cylinder arranged outside the outer spiral blades, the cleaning and filtering cylinder comprises a cleaning and filtering cylinder body, an annular support plate matched with a rear end of the cleaning and filtering cylinder body, and an annular cover plate matched with a front end of the cleaning and filtering cylinder body, the annular support plate is arranged on the inner spiral cylinder support seat, a plurality of liquid passing holes are arranged on the cleaning and filtering cylinder body, at least one cleaning columnar protruding part, at least one tensioning columnar protruding part, and at least one filter cloth transmission columnar protruding part are arranged on the cleaning and filtering cylinder body in a circumferential direction, the cleaning columnar protruding part, the tensioning columnar protruding part, and the filter cloth transmission columnar protruding part are all outwardly protruding and arranged in an axial direction, a filter cloth cleaning cavity with an open bottom is arranged in the cleaning columnar protruding part in an axial direction, a filter cloth tensioning cavity with an open bottom is arranged in the tensioning columnar protruding part in an axial direction, and a filter cloth transmission cavity with an open bottom is arranged in the filter cloth transmission columnar protruding part in an axial direction, a plurality of liquid passing holes are arranged on the tensioning columnar protruding part and communicated with the corresponding filter cloth tensioning cavities, a plurality of liquid passing holes are arranged on the filter cloth transmission columnar protruding part and communicated with the corresponding filter cloth transmission cavities, and a plurality of overflow holes are arranged on the cleaning columnar protruding part at least on one side close to the cleaning and filtering cylinder body; the annular support plate is arranged on the rear end of the cleaning and filtering cylinder body, the annular cover plate is arranged on the front end of the cleaning and filtering cylinder body and is respectively provided with sealing covers matched with front end ports of the filter cloth cleaning cavity, the filter cloth tensioning cavity, and the filter cloth transmission cavity, and front ends of the cleaning columnar protruding part, the tensioning columnar protruding part, and the filter cloth transmission columnar protruding part exceed the cleaning and filtering cylinder body, so that discharge ports are formed between the front end of the cleaning columnar protruding part and the front end of the tensioning columnar protruding part, between the front end of the cleaning columnar protruding part and the front end of the filter cloth transmission columnar protruding part, and between the front end of the tensioning columnar protruding part and the front end of the filter cloth transmission columnar protruding part.The cleaning filter cylinder is provided with a filter cloth supporting cylinder, and a plurality of liquid passing holes are arranged on the filter cloth supporting cylinder; the filter cloth cleaning cavity, the filter cloth tensioning cavity and the filter cloth transmission cavity are respectively provided with a pair of guide rollers arranged along the axial direction at the bottom opening thereof and a scraper located between the pair of guide rollers; the filter cloth transmission cavity is provided with a transmission shaft for driving the filter cloth to rotate and a filter cloth pressing device matched with the transmission shaft; the transmission shaft extends from the corresponding sealing cover and is provided with a driven gear; the outer rotating drum is provided with a driving gear engaged with the driven gear; the filter cloth cleaning cavity is provided with a filter cloth cleaning device; and the filter cloth tensioning cavity is provided with a filter cloth tensioning device.

[0005] As a preferred solution, in the horizontal sedimentation filtration centrifuge, the cleaning filter cylinder is provided with a pair of oppositely arranged cleaning cylindrical protrusions, a pair of oppositely arranged tensioning cylindrical protrusions and a pair of oppositely arranged filter cloth transmission cylindrical protrusions along the circumferential direction, so that the two sides of the filter cloth cleaning cavity are the filter cloth tensioning cavity and the filter cloth transmission cavity respectively, the two sides of the filter cloth tensioning cavity are the filter cloth transmission cavity and the filter cloth cleaning cavity respectively, and the two sides of the filter cloth transmission cavity are the filter cloth tensioning cavity and the filter cloth cleaning cavity respectively; the pair of filter cloth cleaning cavities, the pair of filter cloth tensioning cavities and the pair of filter cloth transmission cavities are uniformly arranged along the circumferential direction.

[0006] As a preferred solution, in the horizontal sedimentation filtration centrifuge, the corresponding end of the filter cloth supporting cylinder is provided with an annular limiting edge inwardly; and the inner spiral cylinder supporting seat is provided with an axial blocking mechanism matched with the annular limiting edge.

[0007] As a preferred solution, in the horizontal sedimentation filtration centrifuge, the axial blocking mechanism comprises a pin shaft arranged in the inner spiral cylinder supporting seat, a roller matched with the annular limiting edge arranged on the pin shaft through a bearing, an annular clamping groove arranged at the end of the pin shaft, and a clamping spring arranged in the annular clamping groove of the end of the pin shaft.

[0008] As a preferred scheme, in the horizontal sedimentation filtration centrifuge, the filter cloth cleaning device comprises an ultrasonic vibration rod, a cylindrical cleaning chamber formed by a plurality of annularly arranged supporting rods is arranged in the filter cloth cleaning cavity, one end of all the supporting rods is movably arranged in the corresponding sealing cover through a cleaning chamber front shaft head, a front shaft head sealing element is arranged between the cleaning chamber front shaft head and the corresponding sealing cover, the other end of all the supporting rods is movably arranged in the rear end port of the filter cloth cleaning cavity through a cleaning chamber rear shaft sleeve, and a rear shaft sleeve sealing element is arranged between the cleaning chamber rear shaft sleeve and the rear end port of the filter cloth cleaning cavity, and the ultrasonic vibration rod extends into the cylindrical cleaning chamber from the cleaning chamber rear shaft sleeve and is fixed on the rear end port of the filter cloth cleaning cavity.

[0009] As a preferred scheme, in the horizontal sedimentation filtration centrifuge, a protective sleeve is further sleeved on the ultrasonic vibration rod.

[0010] As a preferred scheme, in the horizontal sedimentation filtration centrifuge, the filter cloth tensioning device comprises a tensioning roller, both ends of the tensioning roller are respectively provided with a tensioning supporting shaft, the tensioning supporting shaft is provided with a tensioning supporting sleeve through a bearing, and a tensioning supporting sealing element is further arranged between the tensioning supporting shaft and the tensioning supporting sleeve, a tensioning cavity cover plate is arranged in the rear end port of the filter cloth tensioning cavity, a tensioning sliding groove radially arranged with respect to the cleaning filter cylinder is respectively formed in the tensioning cavity cover plate and the corresponding sealing cover, the two side walls of the tensioning sliding groove are parallel to each other, and the tensioning supporting sleeve is movably arranged in the corresponding tensioning sliding groove, so that the tensioning roller can move along the radial direction of the cleaning filter cylinder.

[0011] As a preferred scheme, in the horizontal sedimentation filtration centrifuge, the tensioning roller is provided with a centrally symmetrically arranged tensioning arc-shaped roller surface.

[0012] As a preferred scheme, in the horizontal sedimentation filtration centrifuge, the filter cloth pressing device comprises a pair of pressing rollers, the pair of pressing rollers are oppositely arranged on both sides of the transmission shaft in the filter cloth transmission cavity, the transmission shaft is provided with a centrally symmetrically arranged outer convex transmission arc-shaped roller surface, and the pressing roller is provided with an inner concave pressing arc-shaped roller surface matched with the transmission arc-shaped roller surface.

[0013] As a preferred solution, in the horizontal settling and filtration centrifuge, the specific installation mode of the compression roller is that the filter cloth transmission columnar protrusion is provided with a compression roller installation hole and a compression installation chamber arranged around the compression roller installation hole on both sides, the compression installation chamber is composed of a chamber body formed by a pair of side plates and a pair of end plates arranged on the filter cloth transmission columnar protrusion around the compression roller installation hole, and a top plate arranged on the chamber body; the two end plates of the compression installation chamber are respectively provided with a compression adjustment slot arranged radially relative to the transmission shaft and an adjustment locking screw hole communicated with the compression adjustment slot, and the two ends of the compression roller are movably arranged in the compression adjustment slot of the corresponding one end plate of the corresponding compression installation chamber, and the adjustment locking screw hole is provided with a compression adjustment screw.

[0014] The horizontal settling and filtration centrifuge has the advantages that the speed difference between the inner spiral cylinder and the outer rotating drum drives the driving gear to rotate, and then the filter cloth arranged on the transmission shaft is driven to rotate through the driven gear and the transmission shaft, the filter cloth is cleaned when passing through the filter cloth cleaning cavity, and most of the materials on the filter cloth are scraped off by the scraper before entering the filter cloth cleaning cavity, so that the filter cloth can be thoroughly cleaned in the filter cloth cleaning cavity, thereby reducing the phenomenon that the filter cloth is blocked and cannot be drained, realizing continuous filtration and separation of the materials (especially small particle materials), and reducing the moisture content of the obtained solid (finished product). In addition, the overflow hole communicated with the filter cloth cleaning cavity and the liquid passing channel for liquid supplement are arranged, so that the cleaning effect can be improved by supplementing new cleaning liquid into the filter cloth cleaning cavity according to the actual situation. Moreover, the cylindrical cleaning chamber surrounded by the annularly arranged supporting rods reduces the contact area of the filter cloth and the cylindrical cleaning chamber, thereby increasing the contact area of the filter cloth and the cleaning liquid in the cylindrical cleaning chamber, so that the filter cloth cleaning is more efficient; the cleaning quality reliability is ensured by supplementing the cleaning liquid to the cylindrical cleaning chamber at a fixed time to replace the turbid cleaning liquid; the contact area of the filter cloth and the cylindrical cleaning chamber is reduced, thereby reducing the influence on the rotation of the filter cloth, so that the filter cloth rotates more smoothly. In addition, the tensioning shaft is always in a tensioning state under the action of the centrifugal force during rotation, so as to ensure that the filter cloth is always close to the transmission shaft, and the filter cloth is corrected during the rotation of the filter cloth due to the centrally and symmetrically arranged tensioning arc-shaped roller surface on the tensioning shaft, so as to ensure that the position of the filter cloth is always at the center position of the roller, reduce the probability of stacking and jamming of the filter cloth, and ensure the reliability of the rotation of the filter cloth. In addition, the centrally and symmetrically arranged transmission arc-shaped roller surface is arranged on the transmission shaft, and the compression arc-shaped roller surface matched with the transmission arc-shaped roller surface is arranged on the compression roller, so as to increase the friction force between the transmission shaft and the filter cloth, and make the rotation of the filter cloth more stable and not slip. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a longitudinal sectional view of the sedimentation centrifuge according to the present application.

[0016] Figure 2 is a transverse sectional view of the sedimentation centrifuge according to the present application.

[0017] Figure 3 is a sectional view of A-A of Figure 2

[0018] Figure 4 is a sectional view of B-B of Figure 2

[0019] Figure 5 is a sectional view of C-C of Figure 2

[0020] Figure 6 is a sectional view of E-E of Figure 2

[0021] Figure 7 is an enlarged view of F portion of Figure 1

[0022] Figure 8 and Figure 9 is a perspective view of the cleaning filter device.

[0023] Figure 10 is a perspective view of the filter cloth support cylinder.

[0024] Figure 11 is a view of the filter cloth mounting structure.

[0025] Figures 1 to 11 ​​​​​1, base, 10, casing, 101, first liquid outlet, 102, second liquid outlet, 103, dry material outlet, 108, annular baffle, 11, feed pipe, 13, signal introduction slip ring, 16, liquid supplement pipe, 18, washing pipe, 2, differential gear, 3, spline shaft, 30, inner spiral cylinder, 31, inner spiral blade, 33, inner spiral support shaft, 34, connecting flange, 341, liquid supplement channel, 4, outer rotary drum flange shaft, 400, flange part, 4001, clear liquid overflow hole, 401, outer shaft part, 402, inner shaft part, 41, outer rotary drum, 411, outer spiral blade, 412, driving gear, 5, cleaning and filtering device, 50, cleaning and filtering cylinder, 51, columnar protrusion for cleaning, 510, filter cloth cleaning cavity, 5101, ultrasonic vibration rod, 5102, support rod, 51013, bearing pressing plate, 510131, bearing, 51021, front shaft head of cleaning chamber, 51022, rear shaft sleeve of cleaning chamber, 5103, protective sleeve, 511, rear bearing cover of cleaning cavity, 512, sealing cover of cleaning cavity, 516, overflow hole, 52, columnar protrusion for filter cloth transmission, 520, filter cloth transmission cavity, 5201, transmission shaft, 52011, bearing pressing plate, 520111, bearing, 52012, driven gear, 5202, pressing roller, 5204, pressing arrangement chamber, 521, rear pressing cover of transmission cavity, 522, sealing cover of transmission cavity, 523, side plate, 524, end plate, 525, top plate, 526, screw for pressing adjustment, 53, columnar protrusion for tensioning, 530, filter cloth tensioning cavity, 5301, tensioning roller, 53011, tensioning support shaft, 5302, tensioning support sleeve, 5303, bearing cover plate of tensioning roller, 531, rear cover plate of tensioning cavity, 532, sealing cover of tensioning cavity, 54, guide roller, 55, filter cloth support cylinder, 550, liquid passage hole, 551, annular limiting edge, 555, pin shaft, 556, bearing, 557, roller, 558, snap spring, 56, scraper, 57, annular support plate, 571, liquid supplement passage, 573, I-shaped blocking edge, 58, annular cover plate, 583, I-shaped blocking edge, 591, discharge port, 592, discharge port, 593, discharge port, 594, discharge port, 595, discharge port, 596, discharge port, 9, filter cloth. DETAILED DESCRIPTION

[0026] The specific embodiments of the horizontal settling and filtering centrifuge according to the present application will be described in detail below with reference to the accompanying drawings. Figures 1 to 11

[0027] As Figure 1 ​As shown, the horizontal sedimentation filter centrifuge of the present invention includes: a base 1, a splined shaft 3, an inner spiral cylinder 30 and an outer drum 41, inner spiral blades 31 disposed on the inner spiral cylinder 30, an outer drum flange shaft 4 movably disposed in the base 1, outer spiral blades 411 disposed on the outer drum 41, and a differential 2 disposed on the base 1. The outer drum flange shaft 4 is a hollow structure, and the splined shaft 3 is movably inserted into the outer drum flange shaft 4. The corresponding ends of the splined shaft 3 and the outer shaft portion 401 of the outer drum flange shaft 4 are respectively connected to the corresponding output portions of the differential 2 (which is conventional technology in the art and will not be described in detail here). The corresponding ends of the inner spiral cylinder 30 ( Figure 1 The left end of the inner spiral cylinder 30 is connected to the splined shaft 3 and is movably supported by a bearing on the inner shaft portion 402 of the outer drum flange shaft (this is conventional technology in the art and will not be described further here), and the other end of the inner spiral cylinder 30 ( Figure 1 The right end of the inner spiral cylinder 30 extends from the outer drum 41 and is movably mounted in the machine base 1 via an inner spiral cylinder support seat composed of a connecting flange 34 and an inner spiral support shaft 33. Specifically, the other end of the inner spiral cylinder 30 is fixed in the connecting flange 34, which is fixed to the inner spiral support shaft 33. The inner spiral support shaft 33 is movably mounted in the machine base 1 via a bearing (this is conventional technology in the field and will not be described further here); the corresponding end of the outer drum 41 ( Figure 1 The left end of the outer drum 41 is connected to the flange portion 400 of the outer drum flange shaft 4. Several clear liquid overflow holes 4001 are circumferentially opened on the flange portion 400 of the outer drum flange shaft 4. The other end of the outer drum 41 ( Figure 1 The right end of the spiral blade 411 is movably supported on the inner spiral cylinder 30 by a bearing (this is conventional technology in the art and will not be described further here); a cleaning and filtering device 5 is provided on the connecting flange 34, which includes a cleaning and filtering cylinder sleeved on the outside of the outer spiral blade 411, such as... Figure 2 , Figure 8 and Figure 9As shown, the cleaning filter cartridge comprises a cleaning filter cartridge body 50, an annular support plate 57 matched with the rear end of the cleaning filter cartridge body 50, and an annular cover plate 58 matched with the front end of the cleaning filter cartridge body 50, the annular support plate 57 is arranged on the connecting flange 34, the cleaning filter cartridge body 50 is circumferentially provided with a pair of oppositely arranged cleaning cylindrical protrusions 51, a pair of oppositely arranged tensioning cylindrical protrusions 53, and a pair of oppositely arranged filter cloth driving cylindrical protrusions 52, the cleaning cylindrical protrusions 51, the tensioning cylindrical protrusions 53, and the filter cloth driving cylindrical protrusions 52 are all outwardly protruding and arranged in the axial direction, the cleaning cylindrical protrusions 51 are axially provided with filter cloth cleaning cavities 510 with open bottoms, the tensioning cylindrical protrusions 53 are axially provided with filter cloth tensioning cavities 530 with open bottoms, and the filter cloth driving cylindrical protrusions 52 are axially provided with filter cloth driving cavities 520 with open bottoms, the pair of cleaning cylindrical protrusions 51, the pair of tensioning cylindrical protrusions 53, and the pair of filter cloth driving cylindrical protrusions 52 are circumferentially and uniformly arranged, so that the pair of filter cloth cleaning cavities 510, the pair of filter cloth tensioning cavities 530, and the pair of filter cloth driving cavities 520 are circumferentially and uniformly arranged, and the two sides of the filter cloth cleaning cavities 510 are respectively the filter cloth tensioning cavities 530 and the filter cloth driving cavities 520, the two sides of the filter cloth tensioning cavities 530 are respectively the filter cloth cleaning cavities 510 and the filter cloth driving cavities 520, and the two sides of the filter cloth driving cavities 520 are respectively the filter cloth cleaning cavities 510 and the filter cloth tensioning cavities 530; a plurality of liquid passing holes (which belong to the conventional technology in the field and will not be described here) are formed in the tensioning cylindrical protrusions 53 and communicated with the corresponding filter cloth tensioning cavities 530, a plurality of liquid passing holes (which belong to the conventional technology in the field and will not be described here) are formed in the filter cloth driving cylindrical protrusions 52 and communicated with the corresponding filter cloth driving cavities 520, and a plurality of overflow holes 516 are formed in the two sides of the cleaning cylindrical protrusions 51 close to the cleaning filter cartridge body 50.The annular support plate 57 is disposed at the rear end of the cleaning filter cylinder 50, and the annular cover plate 58 is disposed at the front end of the cleaning filter cylinder 50. The annular cover plate 58 is provided with a cleaning chamber sealing cover 512 that mates with the front end of the filter cloth cleaning chamber 510, a tensioning chamber sealing cover 532 that mates with the front end of the filter cloth tensioning chamber 530, and a transmission chamber sealing cover 522 that mates with the front end of the filter cloth transmission chamber 520. The front ends of the cleaning columnar protrusion 51, the tensioning columnar protrusion 53, and the filter cloth transmission columnar protrusion 52 extend beyond the cleaning filter cylinder 50, thereby intersecting the front end of the cleaning columnar protrusion 51 with the tensioning columnar protrusion. The front ends of 53 form discharge ports 592 and 595, the front ends of the columnar protrusion 51 for cleaning and the front ends of the columnar protrusion 52 for filter cloth transmission form discharge ports 593 and 596, and the front ends of the columnar protrusion 53 for tensioning and the front ends of the columnar protrusion 52 for filter cloth transmission form discharge ports 591 and 594; the connecting flange 34 is provided with a liquid replenishment channel 341, and the annular support plate 57 is provided with a liquid replenishment passage 571 connecting the filter cloth cleaning chamber 510 and the liquid replenishment channel 341; the cleaning filter cylinder 50 is provided with a plurality of liquid passage holes (which are conventional techniques in the art and will not be described in detail here), and the cleaning filter cylinder 50 is provided with... Figure 10 The filter cloth support cylinder 55 shown has a plurality of liquid passage holes 550. The corresponding ends of the filter cloth support cylinder 55 ( Figure 1 An annular limiting edge 551 is provided inward from the right end of the flange 34, and an axial blocking mechanism that cooperates with the annular limiting edge 551 is provided on the connecting flange 34. Figure 7 As shown, the axial blocking mechanism includes: a pin 555 disposed in the connecting flange 34, a roller 557 (which is conventional technology in the art and will not be described in detail here) that cooperates with the annular limiting edge 551 is disposed on the pin 555 via a bearing 556, the end of the pin 555 is provided with an annular groove, and a retaining spring 558 (also called a shaft elastic retaining ring) is disposed in the annular groove at the end of the pin 555; the filter cloth cleaning chamber 510, the filter cloth tensioning chamber 530 and the filter cloth transmission chamber 520 are respectively provided with a pair of guide rollers 54 arranged axially in the bottom opening, and a scraper 56 located between the pair of guide rollers 54 (the specific structure of the guide rollers 54 and the scraper 56 is conventional technology in the art and will not be described in detail here), as Figure 4As shown, the filter cloth transmission cavity 520 is provided with a transmission shaft 5201 for driving the filter cloth 9 to rotate and a filter cloth pressing device cooperating with the transmission shaft 5201. The transmission shaft 5201 is provided with a centrally symmetric convex transmission arc-shaped rubber roller surface (the highest point of the transmission arc-shaped rubber roller surface is centrally arranged along the axial center line direction of the corresponding transmission shaft 5201). The transmission shaft 5201 is specifically arranged as follows: one end (the right end in Figure 1 、 Figure 4 ) of the transmission shaft 5201 is movably arranged in the right end port of the filter cloth transmission cavity 520 through a pair of bearings. The right end of the transmission shaft 5201 is provided with an oil seal and an O-ring (belonging to the conventional technology in the field, which will not be described here) between the inside of the pair of bearings and the right end port of the filter cloth transmission cavity 520. The right end port of the filter cloth transmission cavity 520 is provided with a transmission cavity rear gland 521. The other end (the left end in Figure 1 、 Figure 4 ) of the transmission shaft 5201 is movably arranged in the transmission cavity sealing cover 522 in the left end port of the filter cloth transmission cavity 520 through a bearing 520111. The left end of the transmission shaft 5201 is provided with an oil seal (belonging to the conventional technology in the field, which will not be described here) between the inside of the bearing 520111 and the transmission cavity sealing cover 522. The transmission cavity sealing cover 522 is further provided with a bearing pressing plate 52011. The bearing pressing plate 52011 is provided with a mounting through hole cooperating with the transmission shaft 5201. The left end of the transmission shaft 5201 is provided with a driven gear 52012 after passing through the transmission cavity sealing cover 522 and the bearing pressing plate 52011. The left end of the transmission shaft 5201 is provided with an oil seal (belonging to the conventional technology in the field, which will not be described here) between the bearing pressing plate 52011. The outer rotating drum 41 is provided with a driving gear 412 engaging with the driven gear 52012. As Figure 6 、 Figure 8 and Figure 9As shown, the filter cloth pressing device comprises: a pair of pressing rollers 5202 oppositely arranged on both sides of the transmission shaft 5201 in the corresponding filter cloth transmission cavity 520, the pressing roller 5202 is provided with a concave pressing arc-shaped roller surface matched with the transmission arc-shaped roller surface on the transmission shaft 5201, and the specific installation mode of the pressing roller 5202 is that: the filter cloth transmission columnar protrusion 52 is provided with a pressing roller mounting hole on both sides thereof, the filter cloth transmission columnar protrusion 52 is arranged around the pressing roller mounting hole to form a pressing installation chamber 5204, the pressing installation chamber 5204 is composed of a chamber body formed by a pair of side plates 523 and a pair of end plates 524 arranged around the pressing roller mounting hole on the filter cloth transmission columnar protrusion 52 and a top plate 525 arranged on the chamber body; the two end plates 524 of the pressing installation chamber 5204 are respectively provided with a pressing adjustment groove arranged radially relative to the transmission shaft 5201 and an adjustment locking threaded hole communicated with the pressing adjustment groove (which belongs to the conventional technology in the field and will not be described here), the two ends of the pressing roller 5202 are respectively movably arranged in the corresponding pressing adjustment groove of the corresponding one end plate 524 of the corresponding pressing installation chamber 5204, and the pressing adjustment screw 526 is arranged in the adjustment locking threaded hole. Figure 3 As shown, the specific structure of the filter cloth cleaning device comprises: an ultrasonic vibration rod 5101, the filter cloth cleaning cavity 510 is provided with a cylindrical cleaning chamber surrounded by a plurality of annularly arranged supporting rods 5102, one end (left end in Figure 1 and Figure 3 ) of all the supporting rods 5102 is provided with a cleaning chamber front shaft head 51021, the cleaning chamber front shaft head 51021 is movably arranged in the cleaning cavity sealing cover 512 through the bearing 510131, the cleaning cavity sealing cover 512 is provided with a cleaning mounting hole matched with the cleaning chamber front shaft head 51021, the cleaning chamber front shaft head 51021 is sealed by penetrating the cleaning mounting hole of the cleaning cavity sealing cover 512 through the oil seal (which belongs to the conventional technology in the field and will not be described here), and the left end port of the filter cloth cleaning cavity 510 is provided with a bearing pressing plate 51013; the other end (right end in Figure 1 and Figure 3The right end of the filter cloth cleaning chamber 510 is provided with a cleaning chamber rear shaft sleeve 51022, which is movably arranged in the right end port of the filter cloth cleaning chamber 510 through a pair of bearings, and is provided with oil seals on both sides of the pair of bearings and the right end port of the filter cloth cleaning chamber 510 (which is a common technology in the art and will not be described here), and the right end port of the filter cloth cleaning chamber 510 is provided with a cleaning chamber rear bearing cover 511, which is provided with a vibration rod mounting hole matched with an ultrasonic vibration rod 5101, the ultrasonic vibration rod 5101 extends into the cylindrical cleaning chamber through the vibration rod mounting hole and the cleaning chamber rear shaft sleeve 51022 in sequence, and is fixed on the cleaning chamber rear bearing cover 511 (which is a common technology in the art and will not be described here), and a protective sleeve 5103 is further sleeved on the ultrasonic vibration rod 5101 to prevent the ultrasonic vibration rod 5101 from colliding with the supporting rod 5102; the filter cloth tensioning chamber 530 is provided with a filter cloth tensioning device, such as Figure 5As shown, the filter cloth tensioning device comprises: a tensioning roller 5301 (the highest point of the tensioning arc-shaped roller surface is arranged centrally along the axial direction of the corresponding tensioning roller 5301) arranged centrally symmetrically, both ends of the tensioning roller 5301 are provided with a tensioning supporting shaft 53011, both ends of the tensioning supporting shaft 53011 are provided with a tensioning supporting sleeve 5302 through a pair of bearing sleeves, the tensioning supporting sleeve 5302 is further provided with a tensioning roller bearing cover plate 5303, and an oil seal (a common technology in the field, which will not be described here) as a tensioning supporting sealing element is further arranged between the tensioning supporting shaft 53011 and the tensioning supporting sleeve 5302. A tensioning cavity rear cover plate 531 is arranged on the right end port of the filter cloth tensioning cavity 530, the tensioning cavity sealing cover 532 and the corresponding tensioning cavity rear cover plate 531 are provided with a tensioning sliding groove arranged radially relative to the cleaning filter cylinder body 50, and the two side walls of the tensioning sliding groove are parallel to each other (a common technology in the field, which will not be described here). The tensioning supporting sleeve 5302 is movably arranged in the tensioning sliding groove of the corresponding tensioning cavity rear cover plate 531 or the tensioning cavity sealing cover 532, so that the tensioning roller 5301 can move radially along the cleaning filter cylinder body 50; the machine base 1 is provided with a machine shell 10 in which the inner spiral cylinder body 30, the outer rotating drum 41, the cleaning filter device 5 and related parts are covered, the machine shell 10 is further provided with a first liquid outlet 101 corresponding to the clear liquid overflow hole 4001 on the flange part 400 of the outer rotating drum flange shaft 4, a dry material outlet 103 and a second liquid outlet 102 corresponding to the cleaning filter device 5, and a pair of annular baffles 108 located on both sides of the second liquid outlet 102, the annular supporting plate 57 and the annular cover plate 58 are respectively provided with a I-shaped baffle edge 573 and 583 corresponding to the annular baffle 108 on the corresponding side; the inner spiral cylinder body 30 is provided with a feed pipe 11, and the upper and lower sides of the feed pipe 11 are respectively provided with a liquid supplementing pipe 16 and a washing pipe 18, and the inner spiral supporting shaft 33 is provided with a signal introduction slip ring 13 for supplying power to the ultrasonic vibration rod 5101.

[0028] In actual use, the filter cloth 9 is sleeved on the filter cloth supporting cylinder 55, and then the filter cloth 9 is wound on the pair of tensioning rollers 5301, the pair of transmission shafts 5201 and the pair of cylindrical cleaning chambers from between the corresponding pair of guide rollers 54 (see Figure 11The working process is as follows: the inner helical cylinder 30 and the outer rotating drum 41 rotate at different speeds, which drives the driving gear 412 to rotate, and then drives the filter cloth 9 to rotate through the driven gear 52012 and the transmission shaft 5201, so that the filter cloth 9 is cleaned when passing through the filter cloth cleaning cavity 510. The filter cloth 9 has been scraped by the scraper 56 before entering the filter cloth cleaning cavity 510, so that the filter cloth 9 can be thoroughly cleaned in the filter cloth cleaning cavity 510. During the working process, the cleaning effect can be improved by supplementing new cleaning liquid (replacing the original cleaning liquid) into the filter cloth cleaning cavity 510.

[0029] In conclusion, the above is only the preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any equivalent changes and modifications made in the shape, structure, features and spirit of the present application within the scope of the claims of the present application shall be included in the protection of the present application.

Claims

1. A horizontal decanter centrifuge, comprising: The machine base, outer drum, inner spiral cylinder, spline shaft, outer drum flange shaft movably arranged in the machine base, differential arranged on the machine base, inner spiral blade arranged on the inner spiral cylinder and outer spiral blade arranged on the outer drum, the outer drum flange shaft is hollow structure, the spline shaft is movably arranged in the outer drum flange shaft, the corresponding end of the spline shaft and the outer drum flange shaft is connected with the corresponding output part of the differential, the corresponding end of the inner spiral cylinder is connected with the spline shaft and movably supported on the outer drum flange shaft, the other end of the inner spiral cylinder is arranged in the machine base through the inner spiral cylinder support seat, the corresponding end of the outer drum is arranged on the outer drum flange shaft, and the other end of the outer drum is movably supported on the inner spiral cylinder, characterized in that the inner spiral cylinder support seat is provided with a cleaning filter device, the cleaning filter device comprises a cleaning filter cylinder arranged outside the outer spiral blade, the cleaning filter cylinder comprises a cleaning filter cylinder body, an annular support plate matched with the rear end of the cleaning filter cylinder body and an annular cover plate matched with the front end of the cleaning filter cylinder body, the annular support plate is arranged on the inner spiral cylinder support seat, a plurality of liquid passing holes are formed in the cleaning filter cylinder body, at least one cleaning cylindrical protrusion, at least one tensioning cylindrical protrusion and at least one filter cloth transmission cylindrical protrusion are arranged on the cleaning filter cylinder body in the circumferential direction, the cleaning cylindrical protrusion, the tensioning cylindrical protrusion and the filter cloth transmission cylindrical protrusion are all outwardly protruding and arranged in the axial direction, the cleaning cylindrical protrusion is provided with a filter cloth cleaning cavity with an open bottom in the axial direction, the tensioning cylindrical protrusion is provided with a filter cloth tensioning cavity with an open bottom in the axial direction, and the filter cloth transmission cylindrical protrusion is provided with a filter cloth transmission cavity with an open bottom in the axial direction, a plurality of liquid passing holes are formed in the tensioning cylindrical protrusion and communicated with the corresponding filter cloth tensioning cavities, a plurality of liquid passing holes are formed in the filter cloth transmission cylindrical protrusion and communicated with the corresponding filter cloth transmission cavities, and a plurality of overflow holes are formed in the cleaning cylindrical protrusion on at least one side close to the cleaning filter cylinder body, the annular support plate is arranged at the rear end of the cleaning filter cylinder body, the annular cover plate is arranged at the front end of the cleaning filter cylinder body and is respectively provided with sealing covers matched with the front end ports of the filter cloth cleaning cavity, the filter cloth tensioning cavity and the filter cloth transmission cavity, and the front ends of the cleaning cylindrical protrusion, the tensioning cylindrical protrusion and the filter cloth transmission cylindrical protrusion are arranged beyond the cleaning filter cylinder body, so that the discharge ports are formed between the front end of the cleaning cylindrical protrusion and the front end of the tensioning cylindrical protrusion, between the front end of the cleaning cylindrical protrusion and the front end of the filter cloth transmission cylindrical protrusion and between the front end of the tensioning cylindrical protrusion and the front end of the filter cloth transmission cylindrical protrusion.The filter cloth cleaning cavity, the filter cloth tensioning cavity and the filter cloth transmission cavity are respectively provided with a pair of guide rollers arranged along the axial direction at the opening at the bottom thereof and a scraper between the pair of guide rollers, the filter cloth transmission cavity is provided with a transmission shaft for driving the filter cloth to rotate and a filter cloth pressing device matched with the transmission shaft, the transmission shaft extends out of the corresponding sealing cover and is provided with a driven gear, the outer rotating drum is provided with a driving gear engaged with the driven gear, the filter cloth cleaning cavity is provided with a filter cloth cleaning device, and the filter cloth tensioning cavity is provided with a filter cloth tensioning device; the inner spiral cylinder support seat is provided with a liquid supplementing channel, and the annular support plate is provided with a liquid supplementing passage communicating the filter cloth cleaning cavity and the liquid supplementing channel.

2. A horizontal decanter centrifuge according to claim 1, characterized in that: The cleaning filter cartridge is provided with a pair of oppositely arranged cleaning cylindrical protrusions, a pair of oppositely arranged tensioning cylindrical protrusions and a pair of oppositely arranged filter cloth driving cylindrical protrusions along the circumference, so that the two sides of the filter cloth cleaning cavity are the filter cloth tensioning cavity and the filter cloth driving cavity respectively, the two sides of the filter cloth tensioning cavity are the filter cloth driving cavity and the filter cloth cleaning cavity respectively, and the two sides of the filter cloth driving cavity are the filter cloth tensioning cavity and the filter cloth cleaning cavity respectively; the pair of filter cloth cleaning cavities, the pair of filter cloth tensioning cavities and the pair of filter cloth driving cavities are uniformly arranged along the circumference.

3. A horizontal decanter centrifuge according to claim 1, characterized in that: Corresponding ends of the filter cloth supporting cylinder are provided with annular limiting edges inwardly, and the inner spiral cylinder body supporting seat is provided with an axial blocking mechanism matched with the annular limiting edges.

4. A horizontal decanter centrifuge according to claim 3, characterized in that: The axial blocking mechanism comprises a pin shaft arranged in the inner spiral cylinder body supporting seat, a roller matched with the annular limiting edges arranged on the pin shaft through a bearing, and a ring-shaped clamping groove arranged at an end of the pin shaft, and a clamping spring arranged in the ring-shaped clamping groove of the end of the pin shaft.

5. A horizontal decanter centrifuge according to claim 1, characterized in that: The filter cloth cleaning device comprises an ultrasonic vibration rod, a cylindrical cleaning chamber surrounded by a plurality of annularly arranged supporting rods is arranged in the filter cloth cleaning cavity, one end of all the supporting rods is movably arranged in a corresponding sealing cover through a cleaning chamber front shaft head, a front shaft head sealing element is arranged between the cleaning chamber front shaft head and the corresponding sealing cover, the other end of all the supporting rods is movably arranged in a rear end port of the filter cloth cleaning cavity through a cleaning chamber rear shaft sleeve, and a rear shaft sleeve sealing element is arranged between the cleaning chamber rear shaft sleeve and the rear end port of the filter cloth cleaning cavity, and the ultrasonic vibration rod extends into the cylindrical cleaning chamber from the cleaning chamber rear shaft sleeve and is fixed on the rear end port of the filter cloth cleaning cavity.

6. A horizontal decanter centrifuge according to claim 5, characterized in that: A protective sleeve is further sleeved on the ultrasonic vibration rod.

7. A horizontal decanter centrifuge according to claim 1, characterized in that: The filter cloth tensioning device comprises a tensioning roller, tensioning supporting shafts are arranged at two ends of the tensioning roller respectively, a tensioning supporting sleeve is arranged on the tensioning supporting shaft through a bearing, a tensioning supporting sealing element is further arranged between the tensioning supporting shaft and the tensioning supporting sleeve, a tensioning cavity cover plate is arranged in a rear end port of the filter cloth tensioning cavity, tensioning sliding grooves radially arranged relative to the cleaning filter cylinder are arranged on the tensioning cavity cover plate and a corresponding sealing cover respectively, two side walls of the tensioning sliding grooves are parallel to each other, and the tensioning supporting sleeve is movably arranged in a corresponding tensioning sliding groove, so that the tensioning roller can move along the radial direction of the cleaning filter cylinder.

8. A horizontal decanter centrifuge according to claim 7, characterized in that A centrally and symmetrically arranged tensioning arc-shaped roller surface is arranged on the tensioning roller.

9. A horizontal decanter centrifuge according to claim 1, characterized in that The filter cloth pressing device comprises a pair of pressing rollers oppositely arranged at two sides of a driving shaft in the filter cloth driving cavity, a centrally and symmetrically arranged outer convex type driving arc-shaped roller surface is arranged on the driving shaft, and an inner concave type pressing arc-shaped roller surface matched with the driving arc-shaped roller surface is arranged on the pressing roller.

10. A horizontal decanter centrifuge according to claim 9, characterized in that The specific installation mode of the compression roller is that the columnar protruding part for driving the filter cloth is provided with a compression roller installation hole and a compression setting chamber arranged around the compression roller installation hole on both sides of the columnar protruding part, the compression setting chamber is composed of a chamber body surrounded by a pair of side plates and a pair of end plates arranged on the columnar protruding part around the compression roller installation hole and a top plate arranged on the chamber body, a compression adjusting groove arranged radially relative to the transmission shaft is formed on each end plate of the compression setting chamber, and an adjusting locking screw hole communicated with the compression adjusting groove is formed on each end plate, and the two ends of the compression roller are movably arranged in the compression adjusting groove of the corresponding end plate of the corresponding compression setting chamber, and a compression adjusting screw is arranged in the adjusting locking screw hole.

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