Double-layer drum screen

Abstract

The utility model belongs to the technical field of manure treatment equipment of breeding factories, and particularly discloses a double-layer drum screen which comprises a rack, a first drum screen and a second drum screen are sequentially arranged on the rack from top to bottom, and the first drum screen and the second drum screen are detachably connected with the rack through bearing fixing seats. The discharging end of the first drum screen is connected with a guide cylinder at the discharging end of the second drum screen through a guide cylinder, the guide cylinder is detachably connected with the rack, and an openable door opening structure is arranged on the rear portion of the guide cylinder. The double-layer drum screen is convenient to repair and maintain, especially when the lower drum is repaired, the upper drum does not need to be taken down, and the repair cost and the repair time are greatly saved.

Description

Technical Field

[0001] This utility model belongs to the technical field of livestock farm manure treatment equipment, and in particular relates to a double-layer drum screen. Background Technology

[0002] In response to national environmental protection requirements, many livestock farming operations generate large amounts of wastewater that needs to be treated before discharge.

[0003] Currently, there are single-layer and double-layer drum screens on the market. The double-layer drum screen consists of upper and lower drums, arranged vertically. Two drive motors are fixed to the frame, and the motors are connected to the drum's main shaft via bearings. During operation, the drive motors rotate, causing the drums to rotate. This allows the pumped sewage to first pass through the upper drum for screening. The filtered sewage then passes through the second drum for further screening. After screening, it enters the sewage squeezer for final solid-liquid separation.

[0004] However, because the double-layer drum screen has an upper and lower layer design, with the height of the two layers approaching the roof of the manure shed, it occupies a large space, resulting in high maintenance costs and difficulties in repairing the drums. For example, if the screen of the lower drum is damaged and needs to be replaced, the upper drum must be removed before the lower drum can be disassembled. Therefore, designing a double-layer drum screen that is easy to maintain and repair has become a key research topic in this field. Utility Model Content

[0005] In order to overcome the above-mentioned shortcomings of the prior art, this utility model provides a double-layer drum screen, which can solve the problems of high maintenance costs and troublesome maintenance.

[0006] To achieve the above objectives, this utility model provides a double-layer drum screen, including a frame. The frame is provided with a first drum screen and a second drum screen arranged sequentially from top to bottom, and both the first drum screen and the second drum screen are detachably connected to the frame through bearing fixing seats. The discharge end of the first drum screen is connected to the discharge end of the second drum screen through a guide tube. The guide tube is detachably connected to the frame, and the rear of the guide tube is provided with an openable door structure.

[0007] Compared with the prior art, this application has the following advantages: When the lower roller is damaged, because the bearing mounting seat and the guide cylinder are detachably connected to the frame, the guide cylinder and the bearing mounting seat can be removed from the frame. At this time, the lower roller can be removed from the discharge end for easy maintenance. In addition, because the guide cylinder is equipped with an opening structure, when the bearing on the bearing mounting seat is damaged, the bearing obstructed by the guide cylinder can be replaced simply by opening the opening structure.

[0008] Furthermore, the door opening structure includes a door panel and a sealing strip mounted on the door panel. One end of the door panel is hinged to the guide cylinder via a hinge, and the other end is detachably connected to the guide cylinder via a bolt.

[0009] Furthermore, the lowest part of the door panel is provided with a ramp.

[0010] Furthermore, the guide tube has a conical structure that is wider at the top and narrower at the bottom.

[0011] Furthermore, it also includes a grease concentrator for applying grease to the bearings of the first and second drum screens. The grease concentrator is installed at the bottom of the frame so that a person can stand on the ground to connect the grease gun. The grease concentrator is connected to the bearings through a grease pipe.

[0012] Furthermore, inspection doors are installed on the water collection hoppers of the first and second drum screens.

[0013] Furthermore, the outer edges of the first and second drum screens extend beyond the outer edge of the water collection hopper to prevent sewage from flowing into the water collection hopper.

[0014] Furthermore, the screen of the roller is a nylon mesh, which is fixed to the roller using a steel plate frame and locked in place by a buckle.

[0015] Furthermore, the screen is divided into several sections, each of which is detachably fixed to the roller.

[0016] Furthermore, the roller is a polygonal roller, which includes a perforated plate and a stainless steel mesh fixed to the upper part of the perforated plate, wherein the aperture of the perforated plate is larger than the aperture of the stainless steel mesh. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0018] Figure 1 This is a side view of a double-layer drum screen according to an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the other side of a double-layer drum screen according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the hidden door panel of a double-layer drum screen according to an embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram showing the hidden guide plate behind a double-layer drum screen according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the drum of a double-layer drum screen according to an embodiment of the present utility model;

[0023] Figure 6 This is a schematic diagram of a polygonal drum of a double-layer drum screen according to an embodiment of the present invention.

[0024] The attached figures are labeled as follows:

[0025] 1. Frame; 2. First drum screen; 3. Second drum screen; 4. Bearing mounting base; 5. Guide tube; 6. Door opening structure; 61. Door panel; 62. Slope; 7. Grease concentrator; 8. Grease pipe; 9. Water collection hopper; 10. Inspection door; 11. Drum; 12. Steel plate frame; 13. Lock; 14. Perforated plate; 15. Bearing. Detailed Implementation

[0026] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figures 1-4 As shown, this utility model provides a double-layer drum screen, including a frame 1. A first drum screen 2 and a second drum screen 3 are arranged sequentially from top to bottom on the frame 1. Both the first drum screen 2 and the second drum screen 3 are detachably connected to the frame 1 through bearing fixing seats 4. The discharge end of the first drum screen 2 is connected to the discharge end of the second drum screen 3 through a guide tube 5. The guide tube 5 is detachably connected to the frame 1. An openable door structure 6 is provided at the rear of the guide tube 5.

[0028] Compared with the prior art, this application has the following advantages: When the second drum screen 3 is damaged, because the bearing mounting seat 4 and the guide cylinder 5 are detachably connected to the frame 1, the guide cylinder 5 and the bearing mounting seat 4 can be removed from the frame 1. At this time, the second drum screen 3 can be removed from the manure discharge end for maintenance. In addition, because the guide cylinder 5 is provided with an opening structure 6, when the bearing 15 on the bearing mounting seat 4 is damaged, the bearing 15 that is blocked by the guide cylinder 5 can be replaced simply by opening the opening structure 6.

[0029] Therefore, the bearing fixing seat 4 of this utility model can be fixed to the frame 1 with bolts. When the second drum screen 3 is damaged, it can be directly removed from the manure discharge end for repair, reducing the maintenance cost of the upper drum that needs to be hoisted in the prior art. In addition, through the design of the door opening structure 6, when the bearing 15 is damaged, it is not necessary to remove the guide tube 5, but only to open the door opening structure 6.

[0030] Following the above embodiments, more specifically, as Figure 4 As shown, the door opening structure 6 includes a door panel 61 and a sealing strip mounted on the door panel 61. One end of the door panel 61 is hinged to the guide cylinder 5 via a hinge, and the other end is detachably connected to the guide cylinder 5 via a bolt. The sealing strip design prevents fecal matter from flowing out from the door gaps.

[0031] More preferably, the lowest part of the door panel 61 is provided with a ramp 62. The design of the ramp 62 not only improves the sealing effect between the bottom part of the door panel 61 and the guide cylinder 5 to prevent material leakage, but also prevents material accumulation.

[0032] Following the above embodiment, more specifically, the guide tube 5 has a conical structure that is wider at the top and narrower at the bottom, which prevents the accumulation of fecal matter during material feeding and facilitates subsequent cleaning.

[0033] Following the above embodiments, more specifically, it also includes a grease concentrator 7 for applying grease to the bearings 15 of the first drum screen 2 and the second drum screen 3. The grease concentrator 7 is installed at the bottom of the frame 1 so that a person can stand on the ground to connect the grease gun. The grease concentrator 7 is connected to the bearing 15 through a grease pipe 8. In the prior art, when applying grease to the bearing 15, because the bearing is relatively high and the installation space is narrow, the person needs to climb to a high place, which not only poses the risk of working at height but is also difficult to operate. In this application, after the operator holds the grease gun and connects to the grease concentrator 7, the lubricating oil can be delivered to the inside of the bearing 15 simply by standing on the ground.

[0034] Following the above embodiment, more specifically, an inspection door 10 is installed on the water collection hopper 9 of the first drum screen 2 and the second drum screen 3. The inspection door 10 facilitates cleaning of the interior of the water collection hopper 9.

[0035] Continuing with the above embodiment, more specifically, the outer edges of the drums 11 of the first drum screen 2 and the second drum screen 3 extend beyond the outer edge of the water collection hopper 9 to prevent fecal waste from flowing into the water collection hopper 9. As the drums 11 rotate, centrifugal force and rotation cause the fecal waste to be transported towards the discharge end. When the fecal waste is discharged from the outlet, if the outer edge of the bottom water collection hopper 9 extends beyond the outer edge of the drums 11, the fecal waste that should have flowed into the guide cylinder 5 at the outlet of the drums 11 will flow into the water collection hopper 9, thus affecting the subsequent treatment of wastewater.

[0036] Following the above embodiments, more specifically, as Figure 5 As shown, the screen of the drum 11 is a nylon mesh, which is fixed to the drum 11 using a steel plate frame 12 and locked with a buckle 13. Currently, the screen is fixed using nylon rope. During use, because the nylon rope absorbs water, fecal matter easily accumulates at the rope connection point, causing excessive weight at that point. This results in the drum 11 being constantly eccentric during rotation, which can easily damage the connecting rotating parts over time. Therefore, in this application, the screen is first fixed to the steel plate frame 12 and then locked with a buckle 13. This avoids the eccentricity problem caused by using nylon rope in the prior art. When the screen is damaged, it can be quickly replaced by loosening the buckle 13.

[0037] Following the above embodiment, a more preferable embodiment is that the screen is divided into several segments, each of which is detachably fixed to the roller 11. This segmented design allows for individual replacement of each segment based on its usage, reducing the cost of replacing the entire screen as required by existing technologies.

[0038] Following the above embodiments, a more preferred embodiment is, as follows: Figure 6 As shown, the drum 11 is a polygonal drum, which includes a perforated plate 14 and a stainless steel mesh fixed on the upper part of the perforated plate 14. The aperture of the perforated plate 14 is larger than that of the stainless steel mesh. Replacing the nylon mesh with stainless steel mesh can increase the service life of the mesh, reduce the frequency of mesh replacement, and lower maintenance costs. Furthermore, during rotation, the polygonal drum, compared to a circular drum, prevents the sewage from remaining constantly pressed against the drum 11. The rotation causes the sewage to move away from the mesh surface, increasing the force and resulting in faster sewage separation.

[0039] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A double-layer drum screen, characterized in that, The device includes a frame, from top to bottom, on which a first drum screen and a second drum screen are arranged sequentially, and both the first drum screen and the second drum screen are detachably connected to the frame via bearing mounting seats; the discharge end of the first drum screen is connected to the discharge end of the second drum screen via a guide tube, the guide tube is detachably connected to the frame, and the rear of the guide tube is provided with an openable door structure.

2. A double-layer drum screen according to claim 1, characterized in that, The door opening structure includes a door panel and a sealing strip mounted on the door panel. One end of the door panel is hinged to the guide tube via a hinge, and the other end is detachably connected to the guide tube via a bolt.

3. A double-layer drum screen according to claim 2, characterized in that, The lowest part of the door panel is provided with a slope.

4. A double-layer drum screen according to claim 1, characterized in that, The guide tube has a conical structure that is wider at the top and narrower at the bottom.

5. A double-layer drum screen according to any one of claims 1-4, characterized in that, It also includes a grease concentrator for applying grease to the bearings of the first and second drum screens. The grease concentrator is installed at the bottom of the frame so that a person can stand on the ground to connect the grease gun. The grease concentrator is connected to the bearings through a grease pipe.

6. A double-layer drum screen according to claim 1, characterized in that, Inspection doors are installed on the water collection hoppers of the first and second drum screens.

7. A double-layer drum screen according to claim 6, characterized in that, The outer edges of the first and second drum screens extend beyond the outer edge of the water collection hopper to prevent sewage from flowing into the water collection hopper.

8. A double-layer drum screen according to claim 7, characterized in that, The screen of the roller is made of nylon mesh, which is fixed to the roller by a steel plate frame and locked with a buckle.

9. A double-layer drum screen according to claim 8, characterized in that, The screen is divided into several sections, each of which is detachably fixed to the roller.

10. A double-layer drum screen according to claim 9, characterized in that, The roller is polygonal in shape, and includes a perforated plate and a stainless steel mesh fixed to the upper part of the perforated plate. The aperture of the perforated plate is larger than that of the stainless steel mesh.

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