Sludge uniform blending and burning conveying device

Abstract

The application relates to the technical field of sludge blending and burning equipment, and discloses a sludge uniform blending and burning conveying device which comprises a lower conveying belt arranged at the bottom of a frame body, an upper conveying belt arranged on the frame body at the upper portion of the lower conveying belt, wherein the length of the upper conveying belt is smaller than that of the lower conveying belt, a sludge conveying belt arranged on the frame body between the upper conveying belt and the lower conveying belt, wherein the end of the sludge conveying belt is arranged below the end of the upper conveying belt, and a material spreading device arranged at the upper portion of the sludge conveying belt. The following technical effects can be achieved: through the multi-layer layout of the upper and lower conveying belts and the sludge conveying belt, in combination with the material spreading device and the scraper structure, the sludge can be uniformly spread and quantitatively conveyed, and the blending and burning efficiency is improved; the closed cavity formed by the partition plate can absorb the boiler waste heat to preliminarily dry the sludge, reduce the water content, and discharge the waste into the boiler secondary combustion chamber, so that the harmful steam in the waste gas can be burned, and energy waste and environmental pollution are reduced.

Description

Technical Field

[0001] This application relates to the field of sludge co-firing technology, for example to a sludge uniform co-firing and conveying device. Background Technology

[0002] Currently, with the continuous increase in urban sewage treatment volume and treatment rate in my country, the amount of urban sewage sludge generated is also rising year by year. Sludge not only contains a large amount of organic matter and abundant nutrients such as nitrogen and phosphorus, but also harmful substances such as heavy metals, bacteria, and pathogens. If sludge is not properly treated and allowed to discharge unchecked, it will cause serious pollution to the soil, water bodies, and atmospheric environment, endangering ecological balance and human health. Therefore, how to efficiently and safely treat sludge has become a critical issue that urgently needs to be addressed in the field of environmental protection. Traditional landfill and composting methods are no longer sufficient to meet increasingly stringent environmental protection requirements, while sludge co-firing technology, due to its advantages of volume reduction, harmlessness, and resource recovery, is gradually becoming the mainstream disposal method.

[0003] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art: Uneven mixing of sludge and garbage as main fuels leads to low combustion efficiency, large fluctuations in calorific value, and affects the stability of boiler operation. It also easily causes local high temperature or incomplete combustion, increasing the risk of pollutant emissions. Utility Model Content

[0004] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0005] This disclosure provides a sludge uniform co-firing and conveying device to solve the technical problem that sludge tends to concentrate and stick together when co-firing with garbage in traditional methods, resulting in uneven sludge mixing and low combustion efficiency.

[0006] In some embodiments, the sludge uniform co-firing and conveying device includes: a lower conveyor belt disposed at the bottom of a frame; an upper conveyor belt disposed on the frame above the lower conveyor belt, wherein the length of the upper conveyor belt is less than the length of the lower conveyor belt; a sludge conveyor belt disposed on the frame between the upper and lower conveyor belts, wherein the end of the sludge conveyor belt is disposed below the end of the upper conveyor belt; and a material spreading device disposed on the upper part of the sludge conveyor belt.

[0007] In some embodiments, the spreading device includes: a spreading roller rotatably disposed above one end of the sludge conveyor belt feeder; and a feeding bin disposed on one side of the spreading roller, and the feeding bin being disposed on the feeder side of the sludge conveyor belt.

[0008] In some embodiments, the feeding hopper has a funnel-shaped structure, a feeding pipe is connected to the bottom of the feeding hopper, a feeding screw is rotatably installed inside the feeding pipe, and the end of the feeding pipe is a duckbill-shaped discharge port.

[0009] In some embodiments, a cleaning plate is provided between the spreading roller and the feeding bin, one end of the cleaning plate is hinged to the frame, and the other end of the cleaning plate is pressed against the surface of the spreading roller.

[0010] In some embodiments, a scraper is provided at the discharge end of the sludge conveyor belt, the scraper is hinged to the frame in the middle, and one end of the scraper is pressed against the end surface of the sludge conveyor belt.

[0011] In some embodiments, a scraper frame is provided on the upper part of both sides of the scraper, and a scraper roller is rotatably mounted on the scraper frame, and a plurality of scraping blades are provided on the scraper roller.

[0012] In some embodiments, a pull rod is hinged to one end of the scraper near the sludge conveyor belt, and a positioning rod is hinged to the frame at the lower part of the scraper near the sludge conveyor belt. The pull rod slides through the positioning rod, and a pulling spring is sleeved on one end of the pull rod that passes through the positioning rod. An adjusting nut is provided at the end of the pull rod, and the pulling spring is disposed between the adjusting nut and the positioning rod.

[0013] In some embodiments, a partition is provided around the frame between the upper part of the sludge conveyor belt and the upper conveyor belt. The partition, together with the sludge conveyor belt and the upper conveyor belt, forms a cavity. An air inlet is provided at the end of the partition near the discharge end of the sludge conveyor belt, and an air outlet is provided at the end of the partition near the feed end of the sludge conveyor belt.

[0014] In some embodiments, a push tube is provided on the side of the cleaning plate away from the spreading roller, and a push spring is provided inside the push tube, the push spring being pressed against the side of the cleaning plate away from the spreading roller.

[0015] In some embodiments, the scraping blades are alternately arranged on the scraping roller.

[0016] The sludge uniform co-firing and conveying device provided in this embodiment can achieve the following technical effects: By adopting a multi-layered layout of upper and lower conveyor belts and sludge conveyor belts, combined with a material spreading device and scraper structure, sludge can be evenly spread and quantitatively transported, improving co-firing efficiency. The closed cavity formed by the baffle can absorb the waste heat of the boiler to pre-dry the sludge, reduce the moisture content, and the discharged waste can enter the secondary combustion chamber of the boiler to burn the harmful steam in the exhaust gas, reducing energy waste and environmental pollution.

[0017] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0018] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein: Figure 1 This is a schematic diagram of the sludge uniform co-firing and conveying device provided in the embodiments of this disclosure; Figure 2 This is a three-dimensional structural schematic diagram of the sludge uniform co-firing and conveying device provided in the embodiments of this disclosure; Figure 3 This is provided by the embodiments of this disclosure. Figure 2 Schematic diagram of part A in the middle; Figure 4 This is a schematic cross-sectional view of the sludge uniform co-firing and conveying device provided in the embodiments of this disclosure; Figure 5 This is provided by the embodiments of this disclosure. Figure 4 Schematic diagram of Part B in the middle section; Figure 6 This is provided by the embodiments of this disclosure. Figure 4 Schematic diagram of part C in the middle.

[0019] Figure label: 100. Frame; 101. Lower conveyor belt; 102. Upper conveyor belt; 103. Partition plate; 104. Air inlet; 105. Air outlet; 106. Push pipe; 107. Push spring; 200. Sludge conveyor belt; 201. Scraper; 202. Scraper holder; 203. Scraper roller; 204. Scraper blade; 205. Tie rod; 206. Positioning rod; 207. Pull spring; 208. Adjusting nut; 300. Spreading roller; 301. Feeding bin; 302. Feeding pipe; 303. Feeding screw; 304. Discharge port; 305. Cleaning plate Detailed Implementation

[0020] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0021] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0022] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0023] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0024] Unless otherwise stated, the term "multiple" means two or more.

[0025] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0026] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0028] Combination Figure 1-6As shown in the figure, this disclosure provides a sludge uniform co-firing and conveying device, including: a lower conveyor belt 101, disposed at the bottom of a frame 100; an upper conveyor belt 102, disposed on the frame 100 above the lower conveyor belt 101, and the length of the upper conveyor belt 102 is less than the length of the lower conveyor belt 101; a sludge conveyor belt 200, disposed on the frame 100 between the upper conveyor belt 102 and the lower conveyor belt 101, and the end of the sludge conveyor belt 200 is disposed below the end of the upper conveyor belt 102; and a material spreading device, disposed on the upper part of the sludge conveyor belt 200.

[0029] Using the sludge uniform co-firing and conveying device provided in this embodiment, during waste incineration at a waste incineration plant, a first conveyor belt transports waste into the incinerator. A sludge conveyor belt 200 is installed above the first conveyor belt, which uniformly spreads sludge onto the surface of the waste on the first conveyor belt. The sludge on the sludge conveyor belt 200 is then evenly and continuously spread onto the first conveyor belt using a spreading device. The sludge is then continuously transported by the sludge conveyor belt 200 to the waste on the lower conveyor belt 101. An upper conveyor belt 102 is installed above the sludge conveyor belt 200, which can perform secondary waste co-firing. The waste conveying system consists of an upper conveyor belt 102 extending above a lower conveyor belt 101, and a sludge conveyor belt 200 positioned between the upper and lower conveyor belts 102, with its end located below and behind the end of the upper conveyor belt 102. This allows the sludge conveyor belt 200 to first lay sludge on the surface of the waste on the lower conveyor belt 101, followed by the waste conveyed by the upper conveyor belt 102 covering the lower layer of waste with the sludge already laid on it. This achieves uniform mixing of sludge between waste layers, effectively improving the mixing uniformity of sludge and waste, avoiding excessively high local temperatures or incomplete combustion during incineration, improving combustion efficiency, and reducing pollutant emissions.

[0030] Optionally, the spreading device includes: a spreading roller 300, rotatably disposed above one end of the sludge conveyor belt 200 for feeding; and a feeding bin 301 disposed on one side of the spreading roller 300, and the feeding bin 301 is disposed on the feeding side of the sludge conveyor belt 200.

[0031] Thus, the spreading device includes a spreading roller 300 and a feeding bin 301. The feeding bin 301 is used to receive and store the sludge to be conveyed and to evenly convey the sludge onto the sludge conveyor belt 200 below the spreading roller 300. When the sludge conveyor belt 200 carries the sludge past the spreading roller 300, the spreading roller 300 applies uniform pressure to the sludge by rotating, so that it forms a sludge layer of uniform thickness on the sludge conveyor belt 200, effectively preventing the sludge from accumulating or breaking. In this way, the sludge can be evenly spread on the sludge conveyor belt 200.

[0032] Optionally, the feeding bin 301 has a funnel-shaped structure, and a feeding pipe 302 is connected to the bottom of the feeding bin 301. A feeding screw 303 is rotatably installed inside the feeding pipe 302, and the end of the feeding pipe 302 is a duckbill-shaped discharge port 304.

[0033] In this way, the funnel-shaped feeding bin 301 facilitates the reception and temporary storage of sludge. The sludge in the feeding bin 301 flows into the feeding pipe 302 under the action of gravity. The rotation of the feeding screw 303 continuously and quantitatively pushes the sludge to the duckbill-shaped discharge port 304, and then the sludge is evenly extruded from the duckbill-shaped discharge port 304, so that the sludge is pre-laid on the surface of the sludge conveyor belt 200, providing a stable material source for the uniform rolling of the subsequent spreading roller 300. The narrow opening structure of the duckbill-shaped discharge port 304 can effectively control the lateral distribution width of the sludge, ensuring that the sludge can be evenly spread on the sludge conveyor belt 200.

[0034] Optionally, a cleaning plate 305 is provided between the spreading roller 300 and the feeding bin 301. One end of the cleaning plate 305 is hinged to the frame 100, and the other end of the cleaning plate 305 is pressed against the surface of the spreading roller 300.

[0035] Thus, a cleaning plate 305 is provided on the side of the spreading roller 300. The cleaning plate 305 is located on the side adjacent to the feeding bin 301. The upper part of the cleaning plate 305 is hinged to the frame 100, and the lower free end of the cleaning plate 305 is close to the side of the spreading roller 300. When the spreading roller 300 rotates, one end of the cleaning plate 305 is in close contact with the spreading roller 300 along the tangential direction to form a scraping action. The cleaning plate 305 effectively scrapes off the mud attached to the side of the spreading roller 300, preventing the mud from falling onto the flat mud layer as the spreading roller 300 rotates. It also ensures that the surface of the spreading roller 300 is clean and ensures its continuous and uniform compaction effect.

[0036] Optionally, a scraper 201 is provided at the discharge end of the sludge conveyor belt 200. The scraper 201 is hinged to the frame 100 in the middle, and one end of the scraper 201 is pressed against the end surface of the sludge conveyor belt 200.

[0037] In this way, a scraper 201 is provided at the end of the sludge conveyor belt 200 that outputs sludge. The scraper 201 can separate the sludge on the surface of the sludge conveyor belt 200 from the sludge conveyor belt 200, preventing the sludge from being carried back to the feed end when the conveyor belt rotates. The end of the scraper 201 away from the sludge conveyor belt 200 is hinged to the frame 100, so that the scraper 201 can always be pressed on the surface of the sludge conveyor belt 200 to maintain appropriate pressure. This can continuously scrape off the residual sludge on the surface of the sludge conveyor belt 200, preventing the sludge from accumulating on the sludge conveyor belt 200 and affecting the uniformity of subsequent material spreading.

[0038] Optionally, a scraper holder 202 is provided on the upper part of both sides of the scraper 201, and a scraper roller 203 is rotatably mounted on the scraper holder 202, and a plurality of scraping blades 204 are provided on the scraper roller 203.

[0039] Thus, scraper holders 202 are respectively provided on both sides of the upper part of the scraper 201, and scraper rollers 203 are rotatably installed on the scraper holders 202 on both sides. Several scraping blades 204 are provided on the scraper rollers 203. The scraping blades 204 can push the sludge on the scraper 201 onto the lower conveyor belt 101, which can prevent the material from accumulating on the scraper 201. In addition, the scraping blades 204 can evenly scrape the sludge onto the surface of the garbage on the lower conveyor belt 101, so that the garbage and sludge are better mixed and the subsequent processing efficiency is improved.

[0040] Optionally, a pull rod 205 is hinged to one end of the scraper 201 near the sludge conveyor belt 200, and a positioning rod 206 is hinged to the frame 100 at the lower part of the scraper 201 near the sludge conveyor belt 200. The pull rod 205 slides through the positioning rod 206, and a pulling spring 207 is sleeved on one end of the pull rod 205 that passes through the positioning rod 206. An adjusting nut 208 is provided at the end of the pull rod 205, and the pulling spring 207 is located between the adjusting nut 208 and the positioning rod 206.

[0041] Thus, a pull rod 205 is hinged to one end of the scraper 201 near the sludge conveyor belt 200. By pulling the pull rod 205, the scraper 201 can always be kept in close contact with the sludge conveyor belt 200. A positioning rod 206 is hinged to the lower frame 100 at the part where the scraper 201 is in close contact with the sludge conveyor belt 200. The pull rod 205 slides through the positioning rod 206. The end of the pull rod 205 that passes through the positioning rod 206 is connected to an adjusting nut 208 by a thread. A tension spring 207 is provided between the adjusting nut 208 and the positioning rod 206. In this way, the tension spring 207 provides continuous elastic force, which can pull the pull rod 205 to keep the scraper 201 in close contact with the surface of the sludge conveyor belt 200, ensuring stable scraping pressure. By rotating the adjusting nut 208, the compression of the tension spring 207 can be adjusted, thereby precisely controlling the pressure of the scraper 201 on the conveyor belt, adapting to the sludge scraping needs under different working conditions, and ensuring stable and reliable sludge scraping effect.

[0042] Optionally, a partition 103 is provided around the frame 100 between the upper part of the sludge conveyor belt 200 and the upper conveyor belt 102. The partition 103, the sludge conveyor belt 200 and the upper conveyor belt 102 form a cavity. An air inlet 104 is provided at the end of the partition 103 near the discharge end of the sludge conveyor belt 200, and an air outlet 105 is provided at the end of the partition 103 near the feed end of the sludge conveyor belt 200.

[0043] Thus, a surrounding partition 103 is provided on the frame 100 between the sludge conveyor belt 200 and the upper conveyor belt 102. The partition 103 and the two conveyor belts together form a closed cavity. The air inlet 104 is located on the partition 103 near the discharge end of the sludge conveyor belt 200 and is used to introduce hot air into the cavity. The hot air flows in the cavity and can preliminarily heat and dry the sludge, reducing the moisture content of the sludge. At the same time, the flow of hot air drives the moisture in the cavity to be discharged from the air outlet 105, which can prevent the excessive moisture in the sludge from causing incomplete combustion or producing too much flue gas, and improve the efficiency of subsequent incineration treatment.

[0044] Optionally, a push tube 106 is provided on the side of the frame 100 away from the spreading roller 300 of the cleaning plate 305, and a push spring 107 is provided inside the push tube 106. The push spring 107 is pressed on the side of the cleaning plate 305 away from the spreading roller 300.

[0045] Thus, a push tube 106 is provided on the side of the frame 100 away from the spreading roller 300 of the cleaning plate 305. A push spring 107 is installed inside the push tube 106. One end of the push spring 107 contacts the cleaning plate 305 and continuously pushes the cleaning plate 305 toward the surface of the spreading roller 300 through elastic action, so that it fits tightly and effectively removes the residual sludge adhering to the spreading roller 300.

[0046] Optionally, the scraping blades 204 are staggered on the scraper roller 203.

[0047] In this way, the staggered arrangement of the scraper blades 204 on the scraper roller 203 can effectively disperse the force during sludge scraping, avoid stress concentration that could damage the scraper blades 204 or scraper 201, and the staggered arrangement allows each scraper to contact the sludge in sections, which can gradually separate the sludge and improve the uniformity and thoroughness of sludge scraping.

[0048] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A sludge uniform co-firing and conveying device, characterized in that, include: The lower conveyor belt (101) is located at the bottom of the frame (100); An upper conveyor belt (102) is mounted on a frame above the lower conveyor belt, and the length of the upper conveyor belt (102) is less than the length of the lower conveyor belt (101). A sludge conveyor belt (200) is installed on a frame between the upper conveyor belt (102) and the lower conveyor belt (101), and the end of the sludge conveyor belt (200) is located below the end of the upper conveyor belt (102); A material spreading device is installed on the upper part of the sludge conveyor belt (200).

2. The sludge uniform co-firing and conveying device according to claim 1, characterized in that, The material spreading device includes: A spreading roller (300) is rotatably disposed above one end of the sludge conveyor belt (200) for feeding; The feeding bin (301) is located on one side of the spreading roller (300) and the feeding bin (301) is located on the feeding side of the sludge conveyor belt (200).

3. The sludge uniform co-firing and conveying device according to claim 2, characterized in that, The feeding bin (301) has a funnel-shaped structure. A feeding pipe (302) is connected to the bottom of the feeding bin (301). A feeding screw (303) is rotatably installed inside the feeding pipe (302). The end of the feeding pipe (302) is a duckbill-shaped discharge port (304).

4. The sludge uniform co-firing and conveying device according to claim 2, characterized in that, A cleaning plate (305) is provided between the spreading roller (300) and the feeding bin (301). One end of the cleaning plate (305) is hinged to the frame (100), and the other end of the cleaning plate (305) is pressed onto the surface of the spreading roller (300).

5. The sludge uniform co-firing and conveying device according to claim 1, characterized in that, A scraper (201) is provided at one end of the sludge conveyor belt (200) for discharging. The scraper (201) is hinged to the frame (100) in the middle, and one end of the scraper (201) is pressed against the end surface of the sludge conveyor belt (200).

6. The sludge uniform co-firing and conveying device according to claim 5, characterized in that, Scraper holders (202) are provided on the upper part of both sides of the scraper (201), and scraper rollers (203) are rotatably mounted on the scraper holders (202), and a plurality of scraping blades (204) are mounted on the scraper rollers (203).

7. The sludge uniform co-firing and conveying device according to claim 5, characterized in that, A pull rod (205) is hinged to one end of the scraper (201) near the sludge conveyor belt (200). A positioning rod (206) is hinged to the frame (100) at the lower part of the scraper (201) near the sludge conveyor belt (200). The pull rod (205) slides through the positioning rod (206). A pulling spring (207) is sleeved on one end of the pull rod (205) that passes through the positioning rod (206). An adjusting nut (208) is provided at the end of the pull rod (205). The pulling spring (207) is located between the adjusting nut (208) and the positioning rod (206).

8. The sludge uniform co-firing and conveying device according to claim 1, characterized in that, A partition (103) is arranged around the frame (100) between the upper part of the sludge conveyor belt (200) and the upper conveyor belt (102). The partition (103) forms a cavity with the sludge conveyor belt (200) and the upper conveyor belt (102). An air inlet (104) is provided at the end of the partition (103) near the discharge end of the sludge conveyor belt (200), and an air outlet (105) is provided at the end of the partition (103) near the feed end of the sludge conveyor belt (200).

9. The sludge uniform co-firing and conveying device according to claim 4, characterized in that, A push tube (106) is provided on the side of the frame (100) away from the spreading roller (300) of the cleaning plate (305). A push spring (107) is provided inside the push tube (106). The push spring (107) is pressed on the side of the cleaning plate (305) away from the spreading roller (300).

10. The sludge uniform co-firing and conveying device according to claim 6, characterized in that, The scraping blades (204) are staggered on the scraping roller (203).

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