A rotary grille

Abstract

The utility model discloses a rotary grating, including frame, the frame inside both sides symmetry rotatory link has a plurality of chain gear, and the surface of same side plurality of chain gear is jointly engaged and is connected with chain, the rack top is installed with motor, and the motor is connected through the belt with the rack top any chain gear, and the equal distance between two chain is installed with a plurality of harrow residue components, in the utility model, set up frame, chain gear, chain, harrow residue component and motor, and harrow residue component comprises axle rod, mounting seat, ring plate, harrow tooth, spacer, internal thread ring, spring and plug rod, so that when the grating early assembly, can first be in the frame outside with harrow tooth's ring plate, spacer internal thread ring is sleeved on axle rod, then the axle rod of assembled is through plug rod and is inserted with the mounting seat on chain and is inserted and is fixed, can realize the quick assembly of the grating, reduces the assembly difficulty, improves production efficiency, secondly, is favorable to the overhaul replacement work of later period.

Description

Technical Field

[0001] This utility model relates to the field of grille technology, and in particular to a rotary grille. Background Technology

[0002] Rotary bar screens, also known as "rotary mechanical bar screens" or "wire rope traction bar screens," are a type of solid-liquid separation machinery widely used in urban wastewater treatment plants, pumping stations, and power plant intakes. Their main function is to continuously and automatically intercept and remove large suspended solids and floating debris carried in the water flow, such as branches, leaves, plastics, paper, and household waste, to protect the normal operation of downstream treatment equipment, such as water pumps, aerators, and sedimentation tanks, and to prevent pipe blockage.

[0003] However, existing rotary screens still have the following drawbacks: First, during factory production, the shafts for installing the rake teeth need to be manually inserted into the frame, and the rake teeth are then fitted onto the shaft surface after each movement. The internal space of the frame is relatively small, making the initial assembly of the rotary screen difficult and affecting production efficiency. Furthermore, subsequent maintenance and replacement of the rake teeth are not quick enough. Second, to clean the debris on the rake teeth, a rotating brush and a flushing structure are required. However, the current flushing structure of rotary screens is installed on the outside of the rake teeth, working in conjunction with the brush. The brush is a wear part and needs frequent replacement. If the brush is eliminated entirely, the flushing structure, located on the outside of the rake teeth, will not be effective. Therefore, further improvements are needed. To this end, we have proposed a new rotary screen design. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a rotary grille.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a rotary bar screen, comprising a frame, wherein multiple sprockets are symmetrically rotatably connected on both sides inside the frame, and chains are connected to the surfaces of the multiple sprockets on the same side through common meshing. A motor is installed on the top of the frame, and the motor is connected to any sprocket on the top of the frame via a belt. Several slag-removing components are installed at equal distances between two chains. A backflushing component is installed on the top of the frame and inside the slag-removing components. A baffle is fixed inside the frame and above the backflushing components.

[0006] Furthermore, the slag-raking assembly includes a shaft, on the surface of which a plurality of ring plates and a plurality of partition cylinders are slidably sleeved, the ring plates and partition cylinders being staggered, and the outer wall of the ring plates being fixed with rake teeth.

[0007] Furthermore, both ends of the shaft are provided with external threads, and an internal threaded ring is rotatably connected to the external threaded surface. The internal threaded ring is in close contact with the ring plate or partition on both ends of the shaft.

[0008] Furthermore, the slag rake assembly also includes two mounting seats, which are respectively fixedly connected to two chains. The mounting seats have slots on the side away from the chains. Both ends of the shaft have sliding grooves, and a rod is slidably connected inside the sliding groove. The rod and the inner wall of the sliding groove are fixedly connected to a spring. The end of the rod outside the sliding groove is inserted into the slot.

[0009] Furthermore, a strip-shaped opening is provided on the side of the groove, and a lever is slidably connected inside the strip-shaped opening, and the lever is fixedly connected to the insertion rod.

[0010] Furthermore, both the slot and the insert are square structures.

[0011] Furthermore, the recoil assembly includes a horizontal tube penetrating the side wall of the frame, and multiple high-pressure nozzles are fixed at equal intervals on the lower surface of the horizontal tube.

[0012] The beneficial effects of this utility model are:

[0013] 1. In use, this utility model includes a frame, sprockets, chain, slag rake assembly, and motor. The slag rake assembly consists of a shaft, mounting base, ring plate, rake teeth, partition cylinder, internal threaded ring, spring, and insert rod. This allows for rapid assembly of the screen by first placing the ring plate with rake teeth and the internal threaded ring of the partition cylinder onto the shaft outside the frame, and then fixing the assembled shaft to the mounting base on the chain via the insert rod. This reduces assembly difficulty and improves production efficiency. Furthermore, it facilitates subsequent maintenance and replacement work.

[0014] 2. When using this utility model, a backwash component is set up inside the rake component, which washes the garbage on the rake teeth from the inside out, improving the garbage cleaning effect. There is no need to use rotating brushes or other structures, saving the step of replacing brushes later. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a perspective view of the entire utility model;

[0017] Figure 2This is an overall sectional view of the present invention;

[0018] Figure 3 This is a partially enlarged cross-sectional view of the slag-raking assembly of this utility model;

[0019] Figure 4 For the present utility model Figure 2 Enlarged view of point A in the middle.

[0020] The attached figures are labeled as follows:

[0021] 1. Frame; 2. Sprocket; 3. Chain; 4. Sludge rake assembly; 41. Shaft; 42. Mounting base; 43. Slot; 44. Ring plate; 45. Rake teeth; 46. Partition cylinder; 47. Internal threaded ring; 48. Slide groove; 49. Spring; 410. Insert rod; 411. Strip-shaped opening; 412. Pulley; 5. Motor; 6. Backflush assembly; 61. Horizontal tube; 62. High-pressure nozzle; 7. Baffle. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1-4 As shown, a rotary bar screen is disclosed, comprising a frame 1. Multiple sprockets 2 are symmetrically rotatably connected to both sides inside the frame 1. Chains 3 are connected to the surfaces of the multiple sprockets 2 on the same side through common meshing. A motor 5 is installed on the top of the frame 1. The motor 5 is connected to any sprocket 2 on the top of the frame 1 via a belt. Several slag-removing components 4 are installed at equal intervals between two chains 3. A backflushing component 6 is installed on the top of the frame 1 and inside the slag-removing component 4. A baffle 7 is fixed inside the frame 1 and above the backflushing component 6.

[0024] In this embodiment, the part of the motor 5 that drives the sprocket 2 adopts existing technology. Both the central shaft of the sprocket 2 connected to the motor 5 and the output end of the motor 5 are equipped with pulleys. The two pulleys are driven by a belt. Therefore, after starting the motor 5, it can drive the corresponding sprocket 2 to rotate, thereby driving the two chains 3 to rotate, and then driving the slag rake assembly 4 to rotate. The electrical control part and electrical connection method of the motor 5 will not be described in detail.

[0025] The slag rake assembly 4 includes a shaft 41, on which a plurality of ring plates 44 and a plurality of partition cylinders 46 are slidably sleeved. The ring plates 44 and the partition cylinders 46 are arranged alternately, and rake teeth 45 are fixed on the outer side wall of the ring plates 44.

[0026] Both ends of the shaft 41 are provided with external threads, and an internal threaded ring 47 is rotatably connected to the external threaded surface. The internal threaded ring 47 is tightly fitted with the ring plate 44 or the partition cylinder 46 on both ends of the shaft 41.

[0027] When assembling the slag rake assembly 4, first screw an internal threaded ring 47 onto one end of the shaft 41, then alternately fit a partition cylinder 46 and a ring plate 44 onto the other end of the shaft 41. The ring plate 44 and the rake teeth 45 are an integral structure, so that there is a distance of one partition cylinder 46 between two adjacent rake teeth 45. Finally, screw another internal threaded ring 47 onto the other end of the shaft 41, and use the two internal threaded rings 47 to press and fix the partition cylinder 46 and the ring plate 44.

[0028] The slag rake assembly 4 also includes two mounting bases 42, which are fixedly connected to two chains 3 respectively. The mounting base 42 has a slot 43 on the side away from the chain 3. Both ends of the shaft 41 have a sliding groove 48, and a rod 410 is slidably connected inside the sliding groove 48. The rod 410 and the inner side wall of the sliding groove 48 are fixedly connected to a spring 49. The end of the rod 410 located outside the sliding groove 48 is inserted into the slot 43.

[0029] The slide groove 48 has a strip-shaped opening 411 on its side, and a lever 412 is slidably connected inside the strip-shaped opening 411. The lever 412 is fixedly connected to the insert rod 410.

[0030] After the ring plate 44 and the partition cylinder 46 of the slag rake assembly 4 are assembled, the sliding block 412 drives the insert rod 410 to retract into the slide groove 48. At this time, the spring 49 is compressed. Then, the two ends of the shaft 41 are aligned with the two symmetrical mounting seats 42, and the sliding block 412 is released. The spring 49 will push the insert rod 410 into the slot 43, thereby realizing the installation of the shaft 41.

[0031] When it is necessary to disassemble and replace the rake teeth 45 later, you can first pull the lever 412 to make the insert rod 410 exit from the slot 43, then remove the shaft 41 from between the two chains 3, and finally disassemble the internal thread ring 47, ring plate 44 and partition cylinder 46, etc., so as to replace the rake teeth 45.

[0032] Both the slot 43 and the insert 410 are square structures. This prevents the shaft 41 from rotating between the two mounting bases 42.

[0033] The recoil assembly 6 includes a horizontal tube 61 that penetrates the side wall of the frame 1, and multiple high-pressure nozzles 62 are fixed at equal intervals on the lower surface of the horizontal tube 61.

[0034] In this embodiment, the end of the horizontal pipe 61 located outside the frame 1 is connected to the water pipe. When the device is in use, the motor 5 drives the chain 3 and the rake assembly 4 to rotate, rake out the garbage in the sewage. When the garbage moves to the top of the frame 1 along with the rake assembly 4, the high-pressure nozzle 62 sprays water from the inside to wash away the garbage on the rake teeth 45. The water here can be filtered water for rinsing, so water resources are not wasted.

[0035] Working principle: The motor 5 is started, driving the sprocket 2 via belt transmission, which in turn drives the two chains 3 to rotate. Several rake components 4 fixed to the chains 3 rotate accordingly, and the rake teeth 45 on the outer wall of their ring plates 44 rake up debris from the water during rotation. When the rake components 4 carrying debris rotate to the top of the frame 1, multiple high-pressure nozzles 62 of the backwash assembly 6 installed at the top of the frame 1 spray high-pressure water into the rake teeth 45, washing away the debris attached to them. The baffle 7 protects the horizontal pipe 61 and the high-pressure nozzles 62. The shaft 41 of the rake components 4 is quickly installed and fixed by inserting the rods 410 at both ends into the slots 43 of the mounting base 42 under the action of springs 49. When the rake teeth 45 need to be replaced, the shaft 41 can be disassembled by compressing the springs 49 with the lever 412 to disengage the rods 410 from the slots 43. The ring plates 44 and partitions 46 on the shaft 41 are fixed by internal threaded rings 47, facilitating disassembly and maintenance.

[0036] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A rotary grid, comprising a frame (1), wherein multiple sprockets (2) are symmetrically rotatably connected on both sides inside the frame (1), and a chain (3) is connected to the surfaces of the multiple sprockets (2) on the same side through common meshing; a motor (5) is mounted on the top of the frame (1), and the motor (5) is connected to any sprocket (2) on the top of the frame (1) via a belt, characterized in that: Several slag-scraping assemblies (4) are installed at equal intervals between the two chains (3). A backflushing assembly (6) is installed on the top of the frame (1) and inside the slag-scraping assembly (4). A baffle (7) is fixed inside the frame (1) and above the backflushing assembly (6).

2. A rotary grille according to claim 1, characterized in that: The slag-raking assembly (4) includes a shaft (41), on which a plurality of ring plates (44) and a plurality of partition cylinders (46) are slidably sleeved. The ring plates (44) and partition cylinders (46) are arranged alternately, and the outer side wall of the ring plates (44) is fixed with raking teeth (45).

3. A rotary grille according to claim 2, characterized in that: Both ends of the shaft (41) are provided with external threads, and an internal threaded ring (47) is rotatably connected to the external threaded surface. The internal threaded ring (47) is in close contact with the ring plate (44) or partition cylinder (46) on both ends of the shaft (41).

4. A rotary grille according to claim 3, characterized in that: The slag rake assembly (4) also includes two mounting bases (42), which are fixedly connected to two chains (3) respectively. The mounting base (42) has a slot (43) on the side away from the chain (3). Both ends of the shaft (41) have sliding grooves (48), and a rod (410) is slidably connected inside the sliding groove (48). The rod (410) and the inner side wall of the sliding groove (48) are fixedly connected to a spring (49). The end of the rod (410) located outside the sliding groove (48) is inserted into the slot (43).

5. A rotary grille according to claim 4, characterized in that: The slide groove (48) has a strip-shaped opening (411) on its side. A lever (412) is slidably connected inside the strip-shaped opening (411), and the lever (412) is fixedly connected to the insert rod (410).

6. A rotary grille according to claim 4, characterized in that: Both the slot (43) and the insert (410) are square structures.

7. A rotary grille according to claim 1, characterized in that: The recoil assembly (6) includes a horizontal tube (61) that penetrates the side wall of the frame (1), and multiple high-pressure nozzles (62) are fixed at equal intervals on the lower surface of the horizontal tube (61).

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