Screw conveyor for sludge

Abstract

The utility model discloses a sludge screw conveyor relates to sludge treatment technical field. The utility model discloses a stirring drum, the one side upper side of stirring drum is connected with feed hopper, and the bottom middle structure of stirring drum has the discharge hole, the stirring mechanism is set up in the inside upside of stirring drum, and the stirring mechanism is used for stirring sludge, the screw conveying subassembly is set up in the middle part of stirring drum side wall, and the screw conveying subassembly is used for conveying sludge to the outside, the receiving groove is set up below stirring drum, and the position of the receiving groove front and rear sides is close to the port and is fixed with the bearing plate. The utility model discloses through stirring settlement and realizes the automatic layering of sludge and broken stone, and the directional extraction of upper sludge is combined with screw conveying subassembly, avoids the broken stone to enter the conveying system, fundamentally solves the problem of blocking, and the screw conveying subassembly only contacts the upper layer of the sludge without broken stone, avoids the direct wear and tear of hard particles to the auger blade, and reduces maintenance cost.

Description

Technical Field

[0001] This utility model relates to the technical field of sludge treatment equipment, specifically to a sludge screw conveyor. Background Technology

[0002] In the field of sludge treatment, traditional sludge conveying processes typically combine centralized collection with screw conveying. Specifically, after the sludge is initially collected in a trough, deodorizing agents are added and the mixture is thoroughly stirred to alleviate odor problems. Subsequently, a screw conveyor is used to transfer the sludge to subsequent processing steps.

[0003] In actual operation, it was found that, on the one hand, sludge often contains hard impurities such as gravel. Gravel can easily get stuck in the gap between the spiral blade and the casing, causing blockage of the conveying channel. On the other hand, the spiral blade is in long-term frictional contact with gravel, which can easily cause scratches, deformation or even breakage on the surface, shortening the service life of the equipment. Therefore, we propose a sludge spiral conveyor to solve the above problems. Utility Model Content

[0004] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0005] A sludge screw conveyor, comprising:

[0006] A mixing drum, wherein a feed hopper is connected to the upper side of one side of the mixing drum, and a discharge hole is formed in the middle of the bottom of the mixing drum;

[0007] A stirring mechanism is disposed inside the upper side of the stirring drum, and the stirring mechanism is used to stir the sludge;

[0008] A screw conveyor assembly is disposed in the middle of the side wall of the mixing drum, and the screw conveyor assembly is used to convey sludge outward;

[0009] A receiving trough is located below the mixing drum. Support plates are fixedly installed on the front and rear sides of the receiving trough near the port. The mixing drum is movably mounted on the support plates. A baffle plate is fixedly installed above one side of the receiving trough. The baffle plate is slidably connected to the bottom of the mixing drum.

[0010] Furthermore, the screw conveyor assembly includes an injection cylinder, which is inclined upward and connected to the middle of the mixing cylinder. A drive motor is installed at the end of the injection cylinder away from the mixing cylinder. The output shaft of the drive motor passes through the cylinder wall of the injection cylinder and is connected to an installation rod. The surface of the installation rod is provided with auger blades. A discharge pipe is provided at the bottom of the end of the injection cylinder near the drive motor.

[0011] Furthermore, a return pipe is connected between the side of the injection cylinder closest to the drive motor and the stirring cylinder.

[0012] Furthermore, the stirring mechanism includes a rotary motor mounted on the top of the stirring drum, the output shaft of the rotary motor is connected to a rotating rod, and stirring blades are fixed at equal intervals on the upper side of the rotating rod.

[0013] Furthermore, it also includes a locking element for preventing the mixing drum from moving away from the baffle plate. The locking element includes a connecting rod hinged to the bottom side of the mixing drum, and a locking nut is threaded onto the surface of the connecting rod. The side wall of the receiving trough is constructed with a rectangular notch adapted to the connecting rod.

[0014] Furthermore, rollers are installed at the bottom corners of the mixing drum, and the bottom of the rollers is slidably connected to the support plate.

[0015] Furthermore, the bottom wall of the mixing drum gradually thins from its edge to the edge of the discharge hole.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. This utility model achieves automatic stratification of sludge and gravel through stirring and sedimentation, combined with a screw conveyor component to directionally extract the upper layer of sludge, preventing gravel from entering the conveying system and fundamentally solving the problem of material blockage. The screw conveyor component only contacts the upper layer of sludge without gravel, avoiding direct wear of the screw conveyor blades by hard particles and reducing maintenance costs. Through structural innovation and process optimization, this device solves the two major pain points of "material blockage" and "wear" in traditional sludge conveying, and has the advantages of high efficiency, durability and economy. It is suitable for the treatment of sludge containing impurities. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is another three-dimensional structural schematic diagram of this utility model;

[0020] Figure 3 This is a top view of the present invention;

[0021] Figure 4 This is a utility model Figure 3 Schematic diagram of cross-section along the AA direction.

[0022] Reference numerals: 1. Mixing drum; 101. Feed hopper; 102. Discharge hole; 103. Roller; 2. Mixing mechanism; 201. Rotary motor; 202. Rotating rod; 203. Mixing blade; 3. Screw conveyor assembly; 301. Injection cylinder; 302. Drive motor; 303. Mounting rod; 304. Screw blade; 305. Discharge pipe; 306. Return pipe; 4. Receiving trough; 401. Rectangular notch; 5. Bearing plate; 6. Baffle plate; 7. Locking component; 701. Connecting rod; 702. Locking nut. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0024] This application provides a sludge screw conveyor, mainly to address the following issues in the prior art: sludge often contains hard impurities such as gravel, which easily get stuck in the gap between the screw blades and the casing, causing blockage of the conveying channel. Furthermore, the screw blades are prone to scratches, deformation, and even breakage due to long-term frictional contact with the gravel, shortening the equipment's service life. The following technical solution is provided, which will be discussed in conjunction with… Figures 1-4 Please provide a detailed explanation:

[0025] A sludge screw conveyor, comprising:

[0026] A mixing drum 1 has a feed hopper 101 connected to the upper side of one side, and a discharge hole 102 is formed in the middle of the bottom of the mixing drum 1;

[0027] A stirring mechanism 2 is located inside the upper side of the stirring drum 1, and the stirring mechanism 2 is used to stir the sludge;

[0028] The screw conveyor assembly 3 is located in the middle of the side wall of the mixing drum 1. The screw conveyor assembly 3 is used to convey sludge outward.

[0029] The receiving trough 4 is located below the mixing drum 1. Support plates 5 are fixedly installed on the front and rear sides of the receiving trough 4 near the ports. The mixing drum 1 is movably mounted on the support plates 5. A baffle plate 6 is fixedly installed above one side of the receiving trough 4, and the baffle plate 6 is slidably connected to the bottom of the mixing drum 1.

[0030] Workflow Description:

[0031] The first step is feeding and mixing.

[0032] Sludge containing gravel (with added deodorizer) enters the mixing drum 1 through the feed hopper 101. The mixing mechanism 2 thoroughly mixes the sludge to promote uniform mixing of the deodorizer. During the mixing process, due to gravity, the denser gravel gradually settles to the bottom of the mixing drum 1 and separates from the upper sludge. (It should be noted that in order to avoid the gravel at the bottom being turned up during the mixing process, the components of the mixing mechanism 2 do not touch the bottom sludge and only act on the upper sludge.)

[0033] The second step is to use a screw conveyor to transport the sludge.

[0034] Start the screw conveyor assembly 3 to draw the sludge (excluding gravel) from the upper part of the mixing drum 1 to the discharge pipe 305 and transport it to the subsequent processing steps.

[0035] The third step is to remove the gravel.

[0036] After the upper layer of sludge is transported, the mixing drum 1 is pushed to roll along the bearing plate 5, so that its bottom discharge hole 102 moves away from the baffle plate 6. The gravel and residual sludge deposited at the bottom of the mixing drum 1 fall into the receiving trough 4 through the discharge hole 102, thereby collecting the gravel.

[0037] This device achieves automatic stratification of sludge and gravel through stirring and sedimentation. Combined with the screw conveyor component 3, it directionally extracts the upper layer of sludge, preventing gravel from entering the conveying system and fundamentally solving the problem of material blockage. The screw conveyor component 3 only contacts the upper layer of sludge without gravel, avoiding direct wear of the screw conveyor blades 304 by hard particles and reducing maintenance costs. Through structural innovation and process optimization, this device solves the two major pain points of "material blockage" and "wear" in traditional sludge conveying. It is efficient, durable and economical, and suitable for the treatment of sludge containing impurities.

[0038] like Figure 4 As shown, in some embodiments, the screw conveyor assembly 3 includes an injection cylinder 301, which is inclined upward and connected to the middle of the mixing drum 1. A drive motor 302 is installed at the end of the injection cylinder 301 away from the mixing drum 1. The output shaft of the drive motor 302 passes through the cylinder wall of the injection cylinder 301 and is connected to an installation rod 303. The surface of the installation rod 303 is provided with auger blades 304. A discharge pipe 305 is provided at the bottom of the end of the injection cylinder 301 near the drive motor 302. More specifically, the drive motor 302 drives the auger blades 304 to rotate, and uses the screw propulsion force to convey the upper layer of sludge in the mixing drum 1 upward along the inclined injection cylinder 301. The sludge is discharged through the discharge pipe 305.

[0039] like Figure 4 As shown, in some embodiments, a return pipe 306 is connected between the side of the injection cylinder 301 near the drive motor 302 and the mixing cylinder 1. More specifically, during the screw conveying process, the sludge in the injection cylinder 301 generates a pressure gradient due to the squeezing of the screw conveyor blades 304, and some free water is squeezed to the upper space. The return pipe 306 is located above the side of the injection cylinder 301 near the drive motor 302 and is connected to the mixing cylinder 1 to form a "high-level return" path. The accumulated water flows back to the mixing cylinder 1 from top to bottom through the return pipe 306, keeping the consistency of the material in the injection cylinder 301 stable.

[0040] like Figure 4 As shown, in some embodiments, the stirring mechanism 2 includes a rotary motor 201 mounted on the top of the stirring drum 1. The output shaft of the rotary motor 201 is connected to a rotating rod 202. Stirring blades 203 are fixed at equal intervals on the upper side of the rotating rod 202. More specifically, the rotary motor 201 drives the rotating rod 202 to rotate, and the stirring blades 203 rotate accordingly, stirring the sludge to form a vortex and stirring the sludge. The blades are concentrated on the upper side of the rotating rod 202 to avoid direct contact with the bottom gravel and reduce the risk of jamming.

[0041] like Figure 2 As shown, in some embodiments, a locking element 7 is also included to prevent the mixing drum 1 from moving away from the baffle plate 6. The locking element 7 includes a connecting rod 701 hinged to the bottom side of the mixing drum 1. A locking nut 702 is threaded onto the surface of the connecting rod 701. The side wall of the receiving groove 4 is constructed with a rectangular notch 401 that is adapted to the connecting rod 701. More specifically, the connecting rod 701 is rotated so that it is embedded in the rectangular notch 401. The nut can be rotated to move axially along the connecting rod 701. When tightened, the nut is in direct contact with the side wall of the receiving groove 4, providing normal pressure to prevent the mixing drum 1 from sliding.

[0042] like Figure 4 As shown, in some embodiments, rollers 103 are installed at the bottom corners of the mixing drum 1. The bottom of the rollers 103 is slidably connected to the support plate 5. More specifically, the rollers 103 are located at the bottom corners of the mixing drum 1 (usually on both sides or at the four corners), symmetrically distributed to balance the load. The axial direction of the rollers 103 is consistent with the direction of movement of the mixing drum 1 to ensure smooth movement. When the operator pushes the mixing drum 1, the rollers 103 roll along the support plate 5, and the bottom of the mixing drum 1 gradually moves out of the baffle plate 6 area. The deposited gravel and a small amount of sludge fall into the receiving trough 4 through the discharge hole 102 at the bottom of the mixing drum 1.

[0043] like Figure 4 As shown, in some embodiments, the bottom wall of the mixing drum 1 gradually thins from its edge to the edge of the discharge hole 102. More specifically, this can reduce sludge adhesion and lower the risk of clogging, and is especially suitable for the treatment of high-viscosity sludge to help the complete discharge of gravel and residual sludge.

[0044] 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 screw conveyor for sludge, characterized in that Include: The stirring barrel (1), the feeding hopper (101) is communicated above one side of the stirring barrel (1), the discharge hole (102) is structured in the bottom of the stirring barrel (1) middle; Stirring mechanism (2) is set up in the stirring barrel (1) inside upper side, the stirring mechanism (2) is used for stirring to sludge; Screw conveying assembly (3) is set up in the stirring barrel (1) side wall middle part, the screw conveying assembly (3) is used for conveying sludge outward; The receiving groove (4) is set up below the stirring barrel (1), the load plate (5) is fixed and set up near the port position on the two sides of the receiving groove (4), the stirring barrel (1) is movably arranged on the load plate (5), the material baffle (6) is fixed and set up above one side of the receiving groove (4), the material baffle (6) is slidably connected with the bottom of the stirring barrel (1).

2. A screw conveyor for sludge according to claim 1, characterized in that The screw conveying assembly (3) includes injection cylinder (301), the injection cylinder (301) is communicated in the stirring barrel (1) middle part obliquely upwards, the drive motor (302) is installed at the end of the injection cylinder (301) away from the stirring barrel (1), the output shaft of the drive motor (302) is connected with the mounting rod (303) penetrating the cylinder wall of the injection cylinder (301), the surface of the mounting rod (303) is provided with auger blade (304), the bottom of the end of the injection cylinder (301) near the drive motor (302) is provided with discharge pipe (305).

3. A screw conveyor for sludge according to claim 2, characterized in that The return pipe (306) is communicated between the side above the injection cylinder (301) near the drive motor (302) and the stirring barrel (1).

4. A screw conveyor for sludge according to claim 1, characterized in that The stirring mechanism (2) includes the rotating motor (201) installed on the top of the stirring barrel (1), the output shaft of the rotating motor (201) is connected with the rotating rod (202), the rotating rod (202) is fixed and set up with the stirring blade (203) on the upper side at equal intervals.

5. A screw conveyor for sludge according to claim 1, characterized in that It also includes locking piece (7), the locking piece (7) is used to prevent the stirring barrel (1) from moving away from the material baffle (6), the locking piece (7) includes the connecting rod (701) hinged on the bottom side of the stirring barrel (1), the surface of the connecting rod (701) is threadedly connected with the locking nut (702), the side wall of the receiving groove (4) is structured with the rectangular gap (401) matched with the connecting rod (701).

6. A screw conveyor for sludge according to claim 1, characterized in that The roller (103) is installed at the bottom corner of the stirring barrel (1), the bottom of the roller (103) is slidably connected with the load plate (5).

7. A screw conveyor for sludge according to claim 1, characterized in that The thickness of the bottom wall of the stirring barrel (1) gradually thins from its edge to the edge of the discharge hole (102).

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