Rotary bar screen machine with rake teeth convenient to replace

Abstract

The utility model relates to the technical field of rotary type bar screen machines, and provides a rotary type bar screen machine convenient to replace rake teeth, which comprises a plurality of cleaning rake teeth arranged in a rack, the cleaning rake teeth comprise a left rake tooth, a right rake tooth, a plurality of middle rake teeth, two driving shafts, a plurality of first connecting shafts, a plurality of second connecting shafts, a plurality of clamping grooves and a plurality of thread grooves, the opposite sides of the left rake teeth and the right rake teeth are fixedly connected with the two driving shafts correspondingly, the multiple threaded grooves are formed in one ends of the multiple second connecting shafts correspondingly, the multiple clamping grooves are formed in the outer wall of the end, away from threads, of the first connecting shaft by a circle, and one side of the middle rake teeth is fixedly connected with one end of the first connecting shaft. The circle center of the other side is fixedly connected with the end, away from the threaded groove, of the second connecting shaft, and a plurality of clamping assemblies are arranged in the threaded groove. The rake tooth is simple and convenient to disassemble, assemble and replace, the specified rake tooth can be independently replaced, and the efficiency and the accuracy of replacing the rake tooth are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary grille dirt removers, in particular to a rotary grille dirt remover which is convenient for replacing rake teeth. Background Art

[0002] Rotary screen cleaner, also known as circulating tooth rake screen cleaner or rotary solid-liquid separator, is a special water treatment equipment that can continuously and automatically intercept and remove various shapes of debris in the fluid. It can be widely used in urban sewage treatment.

[0003] The rotary screen cleaner is composed of rake teeth, rake shafts, transmission chains, etc. The screen rotates in the frame to block and continuously separate the suspended solids in the wastewater.

[0004] A plurality of rake teeth are installed on the rake tooth shaft of the existing rotary screen dirt remover. However, when a rake tooth is damaged and needs to be replaced, the rake tooth shaft needs to be removed, and then all the rake teeth on the rake tooth shaft need to be removed before replacement. This results in a long replacement time for the rake teeth and low replacement efficiency, which brings inconvenience to the replacement of the rake teeth. Utility Model Content

[0005] The utility model provides a rotary grille dirt remover with convenient rake teeth replacement, aiming to solve the existing problems.

[0006] The utility model is implemented in this way. A rotary grille dirt remover that is easy to replace rake teeth comprises: a plurality of cleaning rake teeth are arranged in a frame, the cleaning rake teeth comprise left rake teeth, right rake teeth, a plurality of middle rake teeth, two driving shafts, a plurality of first connecting shafts, a plurality of second connecting shafts, a plurality of clamping grooves and a plurality of thread grooves, the center of a circle on one side opposite to the left rake teeth and the right rake teeth is respectively fixedly connected with one end of the two driving shafts, the other ends of the two driving shafts are respectively fixedly connected with gears, a plurality of thread grooves are respectively opened at one end of the plurality of second connecting shafts, the first connecting shaft The outer wall of one end is provided with a thread, and multiple clamping grooves are opened in a circle of the outer wall of the first connecting shaft away from the threaded end. The left rake tooth is fixedly connected to the end of the second connecting shaft away from the threaded groove at the center of the side facing away from the driving shaft, and the right rake tooth is fixedly connected to the end of the first connecting shaft provided with a thread at the center of the side facing away from the driving shaft. The middle rake tooth is fixedly connected to the end of the first connecting shaft provided with a thread at the center of one side, and is fixedly connected to the end of the second connecting shaft away from the threaded groove at the center of the other side. A sealing ring is fixedly connected to the end of the second connecting shaft provided with the threaded groove, and multiple clamping components are arranged in the threaded groove.

[0007] Preferably, the plurality of cleaning rake teeth are evenly spaced and arranged in parallel.

[0008] Preferably, the plurality of clamping components are arranged in a ring array along the inner wall of the thread groove.

[0009] Preferably, a driving device is fixedly connected to the top of the frame, the output end of the driving device is connected to a sprocket group, the inner side of the sprocket at the bottom of the sprocket group is fixedly connected to a main shaft, one end of the main shaft away from the sprocket extends into the frame, and chains are sleeved on both ends of the main shaft respectively.

[0010] Preferably, the clamping assembly includes a telescopic groove, a clamping block, a connecting rod, a limiting plate and a plurality of return springs. The telescopic groove is opened on the inner wall of the threaded groove, the clamping block slides in the telescopic groove, the surface of the clamping block facing the threaded groove is an inclined surface, one end of the connecting rod is fixedly connected to the end of the clamping block away from the threaded groove, and the other end penetrates through the side wall of the telescopic groove and is fixedly connected to the limiting plate. One end of the plurality of return springs is fixedly connected to the side wall of the clamping block, and the other end is fixedly connected to the inner wall of the telescopic groove.

[0011] Preferably, at least two return springs are provided.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] The cleaning rake teeth of the rotary grille decontaminator for facilitating the replacement of rake teeth include left rake teeth, right rake teeth and a plurality of middle rake teeth. The left rake teeth, right rake teeth and a plurality of middle rake teeth are connected by a first connecting shaft and rotate along the thread on the inner wall of the threaded groove into the threaded groove. And a limiting assembly is provided to limit the first connecting shaft to prevent the first connecting shaft from sliding out of the threaded groove. During disassembly, pull the limiting plate, drive the clamping block to retract into the telescopic groove through the connecting rod, and then rotate the first connecting shaft out of the threaded groove. During installation, rotate the first connecting shaft into the threaded groove, the first connecting shaft presses the clamping block into the telescopic groove until the clamping groove moves to a position opposite to the telescopic groove, and the return spring pushes the clamping block out and embeds it into the clamping groove to limit the first connecting shaft in the threaded groove. The disassembly, installation and replacement operation of the present utility model are simple and convenient, and the specified rake teeth can be replaced separately, improving the efficiency and accuracy of replacing rake teeth. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0015] Figure 1 is the front view structural schematic diagram of the embodiment of the present utility model;

[0016] Figure 2 is the connection structural schematic diagram of the cleaning rake teeth in the embodiment of the present utility model;

[0017] Figure 3 It is a schematic sectional structure view of the cleaning rake teeth in the embodiment of the present utility model;

[0018] Figure 4 It is Figure 3 an enlarged structure view of part A in

[0019] The reference numerals in the drawings are: 1, frame; 2, driving device; 3, sprocket set; 4, chain; 5, cleaning rake teeth; 501, left rake teeth; 502, right rake teeth; 503, middle rake teeth; 504, driving shaft; 505, first connecting shaft; 506, second connecting shaft; 507, card slot; 508, threaded groove; 6, clamping component; 601, telescopic slot; 602, clamping block; 603, connecting rod; 604, return spring; 605, limiting plate. Specific embodiments

[0020] In order to more fully understand the technical content of the present utility model, the technical solutions of the present utility model will be further introduced and described below in conjunction with specific embodiments, but not limited thereto. The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the present utility model.

[0021] In the description of the embodiments of the present utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present utility model is normally placed. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions, and cannot be understood as indicating or implying relative importance.

[0022] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0023] Reference Figure 1 Figure 1 , the rotary grille sewage cleaner facilitating the replacement of rake teeth includes: a frame 1, a driving device 2, a sprocket set 3, a chain 4, cleaning rake teeth 5, and a clamping assembly 6. A driving device 2 is fixedly connected to the top of the frame 1. The output end of the driving device 2 is connected to a sprocket set 3. A main shaft is fixedly connected to the inner side of the sprocket at the bottom of the sprocket set 3. One end of the main shaft away from the sprocket extends into the frame 1. Chains 4 are respectively sleeved at both ends of the main shaft. A plurality of cleaning rake teeth 5 are arranged in the frame 1, and the plurality of cleaning rake teeth 5 are arranged in parallel at equal intervals.

[0024] Reference Figures 2 to 3 Figures 2 to 3 , the cleaning rake teeth 5 include a left rake tooth 501, a right rake tooth 502, a plurality of middle rake teeth 503, two driving shafts 504, a plurality of first connecting shafts 505, a plurality of second connecting shafts 506, a plurality of card slots 507, and a plurality of threaded grooves 508. The centers of the sides of the left rake tooth 501 and the right rake tooth 502 facing away from each other are respectively fixedly connected to one ends of two driving shafts 504. Gears are respectively fixedly connected to the other ends of the two driving shafts 504. The gears on both sides are respectively meshed with the two chains 4. The driving device 2 drives the plurality of cleaning rake teeth 5 to rotate through the sprocket set 3 and the chain 4. A plurality of threaded grooves 508 are respectively opened at one ends of the plurality of second connecting shafts 506. Threads are provided on the outer wall of one end of the first connecting shaft 505. A plurality of card slots 507 are opened in a circle on the outer wall of the first connecting shaft 505 away from the threaded end. The center of the side of the left rake tooth 501 facing away from the driving shaft 504 is fixedly connected to one end of a second connecting shaft 506 away from the threaded groove 508. The center of the side of the right rake tooth 502 facing away from the driving shaft 504 is fixedly connected to one end of a first connecting shaft 505 provided with threads. The center of one side of the middle rake tooth 503 is fixedly connected to one end of the first connecting shaft 505 provided with threads, and the center of the other side is fixedly connected to one end of the second connecting shaft 506 away from the threaded groove 508. A sealing ring is fixedly connected to the end of the second connecting shaft 506 provided with the threaded groove 508. A plurality of clamping assemblies 6 are arranged in the threaded groove 508. The plurality of clamping assemblies 6 are arranged in an annular array along the inner wall of the threaded groove 508. The first connecting shaft 505 is threadedly connected to the threaded groove 508 to connect and fix the left rake tooth 501, the right rake tooth 502, and the middle rake tooth 503. The plurality of clamping assemblies 6 cooperate with the card slots 507 to limit the first connecting shaft 505 to prevent the first connecting shaft 505 from slipping out of the threaded groove 508.

[0025] Reference Figure 4, the clamping component 6 includes a telescopic groove 601, a clamping block 602, a connecting rod 603, a limiting plate 605 and a plurality of return springs 604. The telescopic groove 601 is opened on the inner wall of the threaded groove 508. The clamping block 602 slides in the telescopic groove 601. The surface of the clamping block 602 facing the threaded groove 508 is an inclined surface. One end of the connecting rod 603 is fixedly connected to the end of the clamping block 602 away from the threaded groove 508, and the other end passes through the side wall of the telescopic groove 601 and is fixedly connected to the limiting plate 605. At least two return springs 604 are provided. One end of the plurality of return springs 604 is fixedly connected to the side wall of the clamping block 602, and the other end is fixedly connected to the inner wall of the telescopic groove 601. The clamping block 602 is inserted into the clamping groove 507 to limit the first connecting shaft 505. Pulling the limiting plate 605 can move the clamping block 602 out of the clamping groove 507, making disassembly and assembly very convenient.

[0026] Working principle: When disassembling, select the rake teeth that need to be replaced. First step: Pull the limiting plate 605 on one side, drive the clamping block 602 to retract into the telescopic groove 601 through the connecting rod 603. Second step: Rotate the first connecting shaft 505 out of the threaded groove 508 until the first connecting shaft 505 is completely removed from the threaded groove 508, then release the limiting plate 605. The plurality of return springs 604 rebound and push the clamping block 602 back to its original position. Then perform the separation work on the other side. Repeat the first step and the second step. After both sides are separated, the disassembly of the rake teeth is completed; Subsequently, install the new rake teeth. Rotate the plurality of first connecting shafts 505 into the threaded groove 508 along the threads on the inner wall of the threaded groove 508 in turn. During the process of entering, the end of the first connecting shaft 505 presses the inclined surface of the clamping block 602, pressing the clamping block 602 into the telescopic groove 601. At this time, the clamping block 602 presses the plurality of return springs 604, and the return springs 604 are in an elastically contracted state. Until the clamping groove 507 moves to the position opposite to the telescopic groove 601, the thrust received by the clamping block 602 disappears, and the plurality of return springs 604 rebound, pushing the clamping block 602 out of the telescopic groove 601 and embedding it into the clamping groove 507 to limit the first connecting shaft 505 in the threaded groove 508 to prevent the first connecting shaft 505 from accidentally slipping out. Thus, the replacement work of the rake teeth is completed. The operation is simple and convenient, and the specified rake teeth can be replaced individually, improving the efficiency and accuracy of replacing the rake teeth.

[0027] It should be noted that: The electrical components appearing in this application document are all electrically connected to the external main controller and 220V mains. And the main controller can be conventional known devices such as servo motors, contact sensors, processors, alarm modules and drive modules for control. The standard parts used in this application document can be purchased from the market. The specific connection methods of each part are all connected by conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. And the machinery, parts and equipment all adopt conventional models in the prior art. Coupled with the circuit connection adopting the conventional connection method in the prior art, no specific description will be made here.

[0028] The above-described embodiments are only a part of the embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person of ordinary skill in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A rotary grille dirt remover that is easy to replace rake teeth, characterized in that: The rotary grille dirt remover with easy replacement of rake teeth comprises: a frame (1) is provided with a plurality of cleaning rake teeth (5), the cleaning rake teeth (5) comprising a left rake tooth (501), a right rake tooth (502), a plurality of middle rake teeth (503), two drive shafts (504), a plurality of first connecting shafts (505), a plurality of second connecting shafts (506), a plurality of clamping grooves (507) and a plurality of thread grooves (508), the center of a circle on a side opposite to the right rake tooth (501) and the right rake tooth (502) is fixedly connected to one end of the two drive shafts (504), the other ends of the two drive shafts (504) are fixedly connected to gears, the plurality of thread grooves (508) are respectively provided at one end of the plurality of second connecting shafts (506), the outer wall of one end of the first connecting shaft (505) is provided with threads, the plurality of clamping grooves (507) are fixedly connected to one end of the plurality of second connecting shafts (506), the outer wall of one end of the first connecting shaft (505) is provided with threads, the plurality of clamping grooves (508) are fixedly connected to one end of the plurality of second connecting shafts (506), the outer wall of the plurality of second connecting shafts (505) is provided with threads, the plurality of clamping grooves (507) are fixedly connected to one end of the plurality of second connecting shafts (506), the plurality of 507) is provided on an outer wall of the first connecting shaft (505) away from the threaded end; the left rake tooth (501) is fixedly connected to an end of a second connecting shaft (506) away from the threaded groove (508) at the center of a side of the circle facing away from the driving shaft (504); the right rake tooth (502) is fixedly connected to an end of a first connecting shaft (505) provided with a thread at the center of a side of the circle facing away from the driving shaft (504); the middle rake tooth (503) is fixedly connected to an end of the first connecting shaft (505) provided with a thread at the center of one side of the circle; and is fixedly connected to an end of the second connecting shaft (506) away from the threaded groove (508) at the center of the other side; a sealing ring is fixedly connected to an end of the second connecting shaft (506) provided with the threaded groove (508), and a plurality of clamping components (6) are arranged in the threaded groove (508).

2. The rotary grille dirt remover with easy replacement of rake teeth as claimed in claim 1, characterized in that: The plurality of cleaning rake teeth (5) are arranged in parallel at even intervals.

3. The rotary grille dirt remover with easy replacement of rake teeth as claimed in claim 1, characterized in that: The plurality of clamping components (6) are arranged in a ring array along the inner wall of the thread groove (508).

4. The rotary grille dirt remover with easy replacement of rake teeth as claimed in claim 1, characterized in that: The top of the frame (1) is fixedly connected to a driving device (2), the output end of the driving device (2) is connected to a sprocket group (3), the inner side of the sprocket at the bottom of the sprocket group (3) is fixedly connected to a main shaft, one end of the main shaft away from the sprocket extends into the frame (1), and chains (4) are respectively sleeved at both ends of the main shaft.

5. The rotary screen dirt remover with easy replacement of rake teeth as claimed in claim 1, characterized in that: The clamping assembly (6) comprises a telescopic groove (601), a clamping block (602), a connecting rod (603), a limiting plate (605) and a plurality of return springs (604); the telescopic groove (601) is provided on the inner wall of the thread groove (508); the clamping block (602) slides in the telescopic groove (601); a surface of the clamping block (602) facing the thread groove (508) is an inclined surface; one end of the connecting rod (603) is fixedly connected to an end of the clamping block (602) away from the thread groove (508); the other end of the connecting rod (603) penetrates the side wall of the telescopic groove (601) and is fixedly connected to the limiting plate (605); one end of the plurality of return springs (604) is fixedly connected to the side wall of the clamping block (602) and the other end of the clamping block (604) is fixedly connected to the inner wall of the telescopic groove (601).

6. The rotary screen dirt remover with easy replacement of rake teeth as claimed in claim 5, characterized in that: At least two return springs (604) are provided.

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