Sludge pretreatment device

Abstract

The utility model discloses a sludge pretreatment device which comprises a stirring box, the stirring box comprises a connecting pipeline, a cover plate, a motor A and a stirring rod, a ventilating pipeline is arranged on the upper surface of the cover plate and comprises a communicating section, a ventilating section and a discharging section, the communicating section is in threaded connection with the cover plate, and the two ends of the ventilating section are in threaded connection with the communicating section and the discharging section respectively. The biological filter is connected to the bottom of the cover plate through screws and comprises a mounting frame, an air inlet layer, a pre-filtering layer, a main filtering layer and a sealing top layer. According to the utility model, organic pollutants in gas are degraded by microorganisms and bacteria are captured and decomposed by arranging the biological filter, and the biological filter and the ventilating pipeline can be flexibly designed and mounted according to specific requirements and space conditions, so that odor and bacteria are effectively controlled, the working environment of a sludge pretreatment facility is favorably improved, and the working efficiency of the sludge pretreatment facility is improved. And the comfort and the safety of workers are improved.

Description

Technical Field

[0001] The utility model relates to but is not limited to the technical field of sludge pretreatment, and specifically relates to a sludge pretreatment device. Background Art

[0002] Among the existing sludge treatment technologies in urban sewage treatment plants, most use filter pressing or natural drying, and the moisture content is very high. The treated sludge can only be temporarily solidified and landfilled, which is only a temporary treatment solution and cannot meet the increasingly stringent environmental protection requirements.

[0003] For example, patent CN202222524827.5 discloses a sludge pretreatment device, which makes large pieces of sludge become fine and uniform through the stirring of a stirring rod, and squeezes out most of the water in the sludge through an extrusion block and a pressure plate. The sludge will be stored in a box, but the sludge will produce odor due to the growth of bacteria inside the sludge, which will be released through the feed port, discharge port and other locations, which will not only affect the surrounding environment, but also affect the health and safety of the operators due to the presence of bacteria in the air. For this reason, a sludge pretreatment device that can treat odor is designed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a sludge pretreatment device.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model discloses a sludge pretreatment device, comprising a stirring box, wherein the stirring box comprises a connecting pipe, a cover plate, a motor A and a stirring rod, wherein the connecting pipe is arranged on one side of the stirring box, the cover plate is arranged on the upper end of the stirring box, the motor A is screwed to the upper surface of the cover plate, and the stirring rod is arranged at the bottom of the cover plate and placed inside the stirring box;

[0007] A ventilation duct, the ventilation duct is arranged on the upper surface of the cover plate, the ventilation duct comprises a connecting section, a ventilation section and a discharge section, the connecting section is screwed to the cover plate, and two ends of the ventilation section are respectively screwed to the connecting section and the discharge section;

[0008] A biological filter tank, the biological filter tank is screwed to the bottom of the cover plate, the biological filter tank includes an installation frame, an air intake layer, a pre-filter layer, a main filter layer and a sealing layer, the installation frame is cylindrical in design, and the air intake layer, the pre-filter layer, the main filter layer and the sealing layer are arranged in the installation frame from bottom to top.

[0009] As a preferred technical solution of the utility model, an activated carbon filler is arranged inside the discharge section, and one of a supporting grid or a steel wire mesh is embedded at both ends of the connecting section and the discharge section.

[0010] As an optimal technical solution of the present utility model, the ventilation section includes a motor B, a mounting plate and fan blades, the mounting plate is screwed to the motor B and the ventilation section respectively, and the fan blades are arranged at the output end of the motor B and are transmission-connected to the motor B.

[0011] As a preferred technical solution of the utility model, the surface of the mounting frame and the surface of the cover plate are both provided with connecting holes connected to the ventilation duct, the bottom surface of the mounting frame is a design of a grille or a wire mesh, the air intake layer is one of crushed stone or gravel, and is laid on the bottom surface of the mounting frame, the pre-filter layer is one of zeolite, synthetic fiber or sawdust, the main filter layer is one of peat, compost or activated carbon, and the sealing top layer is one of fine sand or gravel.

[0012] As a preferred technical solution of the utility model, a gear reducer is arranged between the output end of the motor A and the stirring rod, and the gear reducer is arranged on the upper surface of the cover plate. The output end of the motor A is connected to the stirring rod through the gear reducer, and the outer surface screw of the stirring rod has a stirring blade.

[0013] As a preferred technical solution of the utility model, a connecting column is provided on the outer side of the upper end of the mixing box, and the connecting column is designed in a "U" shape. The lower end of the connecting column is rotatably connected to the mixing box, and a fastening screw is provided between the upper end of the connecting column and the cover plate, and the fastening screw passes through the connecting column and is threadedly matched with the cover plate.

[0014] As a preferred technical solution of the utility model, handles are arranged on both sides of the surface of the cover plate, and a rotating hole for rotation with the stirring rod is opened inside the biological filter tank.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] (1) The utility model uses microorganisms to degrade organic pollutants in the gas by setting up a biofilter, capturing and decomposing bacteria, and the combination of the biofilter and the ventilation duct has good long-term operating stability. Compared with traditional gas purification methods, it is more energy-efficient and does not produce secondary pollution.

[0017] (2) The biofilter and ventilation duct of the utility model can be flexibly designed and installed according to specific needs and space conditions, effectively controlling odor and bacteria, helping to improve the working environment of sludge pretreatment facilities, improving the comfort and safety of workers, and solving the problem that odor is generated by bacteria growing inside the sludge and released through the feed port, discharge port, etc., which not only affects the surrounding environment, but also affects the health and safety of operators due to bacteria mixed in the air.

[0018] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0019] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a partial structural diagram of the ventilation duct;

[0023] Figure 3 It is a schematic diagram of the local structure of the biological filter;

[0024] Figure 4 It is a schematic diagram of the local structure of the ventilation section;

[0025] Figure 5 It is a schematic diagram of the local structure of the mixing box;

[0026] In the figure: 100, mixing box; 101, connecting pipe; 102, cover plate; 103, motor A; 104, gear reducer; 105, stirring rod; 106, stirring blade; 107, connecting column; 108, fastening screw; 109, handle; 200, ventilation duct; 201, connecting section; 202, ventilation section; 203, motor B; 204, mounting plate; 205, fan blade; 206, discharge section; 300, biofilter; 301, mounting frame; 302, connecting hole; 303, air intake layer; 304, pre-filtration layer; 305, main filtration layer; 306, top sealing layer; 307, rotating hole. DETAILED DESCRIPTION

[0027] like Figure 1-5 As shown, the utility model provides a sludge pretreatment device, including a stirring box 100, the stirring box 100 includes a connecting pipe 101, a cover plate 102, a motor A103 and a stirring rod 105, the connecting pipe 101 is arranged on one side of the stirring box 100, the cover plate 102 is arranged at the upper end of the stirring box 100, the motor A103 is screwed to the upper surface of the cover plate 102, and the stirring rod 105 is arranged at the bottom of the cover plate 102 and placed inside the stirring box 100;

[0028] The ventilation duct 200 is arranged on the upper surface of the cover plate 102. The ventilation duct 200 includes a connecting section 201, a ventilation section 202 and a discharge section 206. The connecting section 201 is screwed to the cover plate 102, and the two ends of the ventilation section 202 are screwed to the connecting section 201 and the discharge section 206 respectively;

[0029] The biofilter 300 is screwed to the bottom of the cover plate 102. The biofilter 300 includes a mounting frame 301, an air intake layer 303, a pre-filter layer 304, a main filter layer 305 and a sealing layer 306. The mounting frame 301 is cylindrical in design. The air intake layer 303, the pre-filter layer 304, the main filter layer 305 and the sealing layer 306 are arranged in the mounting frame 301 from bottom to top.

[0030] Furthermore, in this embodiment, an activated carbon filler is provided inside the discharge section 206, and the activated carbon adsorbs gases and odors in the sludge pretreatment process, and can also capture a certain amount of bacteria and microorganisms. In addition, a supporting grille or a wire mesh is embedded at both ends of the connecting section 201 and the discharge section 206 to prevent the activated carbon particles from leaking out of the ventilation duct 200.

[0031] In addition, activated carbon filler is set on the rear side of the fan to filter and treat the odor before it is discharged, preventing the discharged air from being as clean as possible and reducing the impact on the environment.

[0032] In this embodiment, the ventilation section 202 includes a motor B203, a mounting plate 204 and fan blades 205. The mounting plate 204 is screwed to the motor B203 and the ventilation section 202 respectively. The fan blades 205 are arranged at the output end of the motor B203 and are transmission-connected to the motor B203. The motor B203 provides rotational power to the fan blades 205 to extract the gas in the mixing box 100.

[0033] In this embodiment, the surface of the installation frame 301 and the surface of the cover plate 102 are both provided with a connecting hole 302 connected to the ventilation duct 200, and the ventilation duct 200 is connected to the biological filter tank 300 through the connecting hole 302. The bottom surface of the installation frame 301 is a design of a grille or a wire mesh to prevent the material in the air intake layer 303 from leaking out. The air intake layer 303 is one of crushed stone or gravel, which is laid on the bottom surface of the installation frame 301. The filter material of the upper layer is supported by the air intake layer 303 to prevent the filter material from being lost and to airflow the incoming gas. The pre-filter layer 304 is one of zeolite, synthetic fiber or sawdust, which is used to capture large particles and pre-purify the gas. The main filter layer 305 is one of peat, compost or activated carbon, which is used to degrade organic pollutants and odors in the gas. The sealing top layer 306 is one of fine sand or gravel, which is used to protect the filter material of the lower layer from wind erosion or mechanical damage.

[0034] In this embodiment, a gear reducer 104 is arranged between the output end of the motor A103 and the stirring rod 105. The gear reducer 104 is arranged on the upper surface of the cover plate 102. The output end of the motor A103 is connected to the stirring rod 105 through the gear reducer 104. The horizontal output shaft of the gear reducer 104 is connected to the stirring rod 105 through a vertical transmission shaft, so that the motor A103 transmits the stirring rod 105. The outer surface screw of the stirring rod 105 has a stirring blade 106, and the sludge in the stirring box 100 is stirred by the stirring blade 106.

[0035] In this embodiment, a connecting column 107 is provided on the outer side of the upper end of the mixing box 100. The connecting column 107 is designed in a "U" shape. The lower end of the connecting column 107 is rotatably connected to the mixing box 100. A fastening screw 108 is provided between the upper end of the connecting column 107 and the cover plate 102. The fastening screw 108 passes through the connecting column 107 and is threadedly matched with the cover plate 102. The bottom of the connecting column 107 is rotatably connected to the mixing box 100 through a screw rod. The connecting column 107 is fixed to the cover plate 102 by the fastening screw 108, thereby realizing the connection between the cover plate 102 and the mixing box 100.

[0036] In this embodiment, handles 109 are provided on both sides of the surface of the cover plate 102 to facilitate the removal of the cover plate 102. A rotating hole 307 for rotation with the stirring rod 105 is provided inside the biological filter 300. The rotating hole 307 allows the stirring rod 105 and the biological filter 300 to work independently of each other, and the rotating hole 307 is staggered with the connecting hole 302.

[0037] Specifically, the sludge is introduced into the mixing box 100 through the pipeline, and the stirring blade 106 on the stirring rod 105 is controlled by the motor A103 to stir the sludge in the mixing box 100. The odor generated during the stirring process is extracted by the fan in the ventilation duct 200. The odor first passes through the suspended biofilter 300 under the cover plate 102, and then passes through the air intake layer 303, the pre-filter layer 304, the main filter layer 305 and the sealing top layer 306 of the biofilter 300 in turn, and the odor is preliminarily diverted, pre-filtered and mainly filtered to purify the odor. Then, the odor enters the connecting section 201 through the connecting hole 302, passes through the ventilation section 202, and is finally filtered again by the activated carbon filler in the discharge section 206, so that the discharged gas is safer. The motor B203 in the ventilation section 202 provides rotational power to the fan blade 205 to extract the gas in the mixing box 100.

[0038] At the same time, the sludge dispersed by the stirring rod 105 enters the next processing equipment through the connecting pipe 101 for sludge pretreatment.

[0039] In addition, considering the problem of gas leakage, sealing rubber rings need to be provided at the connection points of the ventilation duct 200 for sealing to prevent gas leakage.

[0040] In addition, regarding the subsequent operations of the mixing box 100 after the sludge is stirred and pretreated, reference can be made to patent CN202222524827.5, which is a sludge pretreatment device for pretreatment of the sludge. The ventilation duct 200 and the biological filter 300 can also be installed on other sludge pretreatment equipment, and the appearance can be changed accordingly with the changes of other equipment.

[0041] The components of the utility model, such as the mixing box 100, connecting pipe 101, cover plate 102, motor A103, gear reducer 104, stirring rod 105, stirring blade 106, connecting column 107, fastening screw 108, handle 109, ventilation duct 200, motor B203, mounting plate 204, fan blade 205, biofilter 300, mounting frame 301, air intake layer 303, pre-filter layer 304, main filter layer 305, sealing top layer 306, etc., are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or through conventional experimental methods.

[0042] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0044] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A sludge pretreatment device, characterized in that: The invention comprises a stirring box (100), wherein the stirring box (100) comprises a connecting pipe (101), a cover plate (102), a motor A (103) and a stirring rod (105), wherein the connecting pipe (101) is arranged on one side of the stirring box (100), the cover plate (102) is arranged at the upper end of the stirring box (100), the motor A (103) is screwed to the upper surface of the cover plate (102), and the stirring rod (105) is arranged at the bottom of the cover plate (102) and is placed inside the stirring box (100); A ventilation duct (200), the ventilation duct (200) being arranged on the upper surface of the cover plate (102), the ventilation duct (200) comprising a connecting section (201), a ventilation section (202) and a discharge section (206), the connecting section (201) being screw-connected to the cover plate (102), and two ends of the ventilation section (202) being screw-connected to the connecting section (201) and the discharge section (206) respectively; A biofilter (300) is screwed to the bottom of the cover plate (102), and the biofilter (300) comprises a mounting frame (301), an air intake layer (303), a pre-filter layer (304), a main filter layer (305) and a top layer (306). The mounting frame (301) is cylindrical in design, and the air intake layer (303), the pre-filter layer (304), the main filter layer (305) and the top layer (306) are sequentially arranged in the mounting frame (301) from bottom to top.

2. A sludge pretreatment device according to claim 1, characterized in that: An activated carbon filler is arranged inside the discharge section (206), and one of a supporting grid or a steel wire mesh is embedded at both ends of the connecting section (201) and the discharge section (206).

3. A sludge pretreatment device according to claim 2, characterized in that: The ventilation section (202) comprises a motor B (203), a mounting plate (204) and a fan blade (205); the mounting plate (204) is screw-connected to the motor B (203) and the ventilation section (202) respectively; the fan blade (205) is arranged at the output end of the motor B (203) and is transmission-connected to the motor B (203).

4. A sludge pretreatment device according to claim 1, characterized in that: The surface of the installation frame (301) and the surface of the cover plate (102) are both provided with a connecting hole (302) connected to the ventilation duct (200); the bottom surface of the installation frame (301) is designed as a grille or a wire mesh; the air intake layer (303) is one of crushed stone or gravel and is laid on the bottom surface of the installation frame (301); the pre-filter layer (304) is one of zeolite, synthetic fiber or wood chips; the main filter layer (305) is one of peat, compost or activated carbon; and the top layer (306) is one of fine sand or gravel.

5. A sludge pretreatment device according to claim 1, characterized in that: A gear reducer (104) is provided between the output end of the motor A (103) and the stirring rod (105); the gear reducer (104) is provided on the upper surface of the cover plate (102); the output end of the motor A (103) is transmission-connected to the stirring rod (105) via the gear reducer (104); and a stirring blade (106) is screwed on the outer surface of the stirring rod (105).

6. A sludge pretreatment device according to claim 5, characterized in that: A connecting column (107) is arranged on the outer side of the upper end of the mixing box (100), and the connecting column (107) is designed as a "U" shape. The lower end of the connecting column (107) is rotatably connected to the mixing box (100), and a fastening screw (108) is arranged between the upper end of the connecting column (107) and the cover plate (102), and the fastening screw (108) passes through the connecting column (107) and is threadedly matched with the cover plate (102).

7. A sludge pretreatment device according to claim 6, characterized in that: Handles (109) are provided on both sides of the surface of the cover plate (102), and a rotating hole (307) for rotating with the stirring rod (105) is provided inside the biofilter (300).

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