A sludge dewatering equipment with pipeline gas stirring flocculation device

Abstract

The invention relates to the technical field of sludge dewatering equipment, and in particular to a sludge dewatering equipment with a pipeline gas stirring flocculation device, the structure of which comprises: a dewatering equipment body, a flocculation mixing device, and a mixing tube mechanism. The equipment increases the stirring intensity by stirring with air in a pipeline of the mixing tube mechanism, so that the sludge and the flocculant are mixed more fully, the use amount of the flocculant is reduced, and the flocculation effect is better. The manufacturing size of the flocculation mixing tank can also be reduced, which greatly saves the cost. In addition, the air stirring method has a simple and practical structure and low cost. When air is introduced into the equipment, it will not come out from the second flocculation mixing tank, and will not damage the formed flocs. The bubbles can enter the flocculation mixing device more advantageously, so that the sludge can form more solid and fluffy flocs. After the ozone is introduced, the sludge can be effectively oxidized and deodorized.

Description

Technical Field

[0001] The invention relates to the technical field of sludge dewatering equipment, and in particular to sludge dewatering equipment with a pipeline gas stirring and flocculation device. Background Art

[0002] Sludge is an inevitable product of sewage treatment plants and sewage stations. If the sludge is not properly treated and disposed of, it will directly cause secondary pollution to the water and the atmosphere, and will also pose a serious threat to the ecological environment and human activities. Therefore, sludge treatment is very cautious. Sludge treatment can be divided into two types: sludge dewatering process and sludge drying process. However, the existing sludge dewatering equipment has the following defects:

[0003] 1. As the tank inside the equipment is relatively large and the stirring device is suspended, high-speed stirring is not possible, the sludge and flocculant are not mixed evenly, and the ideal flocculation effect cannot be achieved;

[0004] 2. A simple pipeline mechanical stirring device is prone to entanglement and blockage when encountering sludge with more fiber impurities. For inorganic sludge, it is easy to break up the flocs;

[0005] 3. A simple static pipe stirring device is prone to entanglement and blockage, and the stirring force is limited;

[0006] 4. Directly stirring the tank with air can easily cause air to bubble out of the liquid surface, quickly sending the unflocculated sludge upwards, and easily causing the formed flocs to be broken up. Summary of the invention

[0007] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures specifically pointed out in the description, claims and other drawings of the description.

[0008] The object of the present invention is to overcome the above-mentioned shortcomings and provide a sludge dewatering device with a pipeline gas stirring flocculation device.

[0009] To achieve the above-mentioned purpose, the technical solution of the present invention is: a sludge dewatering equipment with a pipeline gas stirring and flocculation device, a dewatering equipment body, a flocculation mixing device, and a mixing tube mechanism. The flocculation mixing device is divided into a first flocculation mixing tank and a second flocculation mixing tank. The mixing tube mechanism is connected to the first flocculation mixing tank, and the second flocculation mixing tank is connected to the dewatering equipment body. The first flocculation mixing tank is connected to the bottom of the second flocculation mixing tank. The first flocculation mixing tank is open at the top. The outlet of the discharging end of the mixing tube mechanism is higher than the position where the first flocculation mixing tank is connected to the bottom of the second flocculation mixing tank. A stirring device is arranged in the second flocculation mixing tank. The mixing tube mechanism includes a dosing pipe, a mud inlet pipe, and an air inlet pipe. The mud inlet pipe is connected to a dosing pipe and an air inlet pipe. The air inlet pipe is externally connected to an air supply device, the dosing pipe is externally connected to a dosing device, and the mud inlet pipe is directly connected to a mud inlet pump or connected to a sludge buffer tank for gravity feeding.

[0010] Preferably, the mixing tube mechanism is provided with a static stirring and mixing mechanism.

[0011] Preferably, a number of flow tanks for increasing the mixing time of sludge and reagents are installed at the lower end of the mud inlet pipe of the static stirring and mixing mechanism. The flow tank is a bowl-shaped structure that is wide at the top and narrow at the bottom. The inner wall of the flow tank is provided with raised blocks for changing the flow mixing direction. The raised blocks are in the shape of triangular cones.

[0012] Preferably, the mixing tube mechanism is provided with a dynamic stirring and mixing mechanism.

[0013] Preferably, a screw shaft for dynamic stirring is provided in the mud inlet pipe of the dynamic stirring and mixing mechanism, and the screw shaft is driven to rotate by a motor.

[0014] Preferably, the interior of the flocculation mixing device is a square stirring tank, and a partition is provided in one corner thereof to divide the square stirring tank into a first flocculation mixing tank and a second flocculation mixing tank.

[0015] Preferably, the stirring device includes a stirring rod, a spring, a stirring blade, a top block, a slide rail, an extrusion block, an electric telescopic rod, and a brush plate. The stirring rod is equipped with an electric telescopic rod, the lower end of the electric telescopic rod is connected to the extrusion block, the lower end of the extrusion block and the upper end of the top block are in contact with each other, a spring is connected to one side of the top block, one side of the stirring blade is inserted into the stirring rod and connected to the top block, the lower end of the top block is movably mounted on the slide rail, the contact portion between the stirring blade and the stirring rod is fitted with a brush plate, and the stirring rod is inserted into the second flocculation mixing tank.

[0016] Preferably, the gas introduced into the air intake pipe is ozone.

[0017] Preferably, an air leakage hole is provided at the upper end of the first flocculation mixing tank.

[0018] Preferably, the mud inlet pipe is in the shape of a circular tube, and the spiral shaft fits closely to the inner wall of the mud inlet pipe.

[0019] By adopting the above technical solution, the beneficial effects of the present invention are:

[0020] 1. The equipment increases the intensity of stirring by gas stirring in the pipe of the mixing tube mechanism, so that the sludge and flocculant are mixed more fully and evenly, the amount of flocculant used is reduced, and the flocculation effect is enhanced;

[0021] 2. This equipment can reduce the size of the flocculation mixing tank, greatly saving costs;

[0022] 3. The gas stirring method has a simple and practical structure and low cost. On this basis, a static or dynamic stirring device is set to achieve a better stirring effect.

[0023] 4. When the gas is introduced into the equipment, it will not come out from the second flocculation mixing tank, and will not damage the formed flocs;

[0024] 5. The bubbles enter the sludge flocs, which can make the sludge form more solid and fluffy flocs;

[0025] 6. Suitable for adding two or more flocculants;

[0026] 7. After the introduction of ozone, the sludge can be effectively oxidized and deodorized.

[0027] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

[0028] Undoubtedly, these and other objects of the present invention will become more apparent after the following detailed description of the preferred embodiment described with reference to various figures and drawings.

[0029] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, one or several preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation of the present invention.

[0031] In the drawings, the same reference numerals are used for the same components and the drawings are schematic and not necessarily drawn to scale.

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only one or several embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on such drawings without paying creative work.

[0033] Figure 1 It is a structural schematic diagram of a sludge dewatering device with a pipeline air stirring flocculation device according to the present invention;

[0034] Figure 2 It is a schematic diagram of the internal structure of the flocculation mixing device of the present invention;

[0035] Figure 3 The internal structure schematic diagram of the mixing tube mechanism of the present invention is a static stirring and mixing mechanism;

[0036] Figure 4 The internal structure schematic diagram of the mixing tube mechanism of the present invention is a dynamic stirring and mixing mechanism;

[0037] Figure 5 It is a partial structural schematic diagram of the flow tank of the present invention;

[0038] Figure 6 It is a schematic diagram of a partial cross-sectional structure of the stirring device of the present invention;

[0039] Figure 7 It is an enlarged structural schematic diagram of the bristle plate of the present invention;

[0040] Figure 8 It is a schematic diagram of the internal structure of the dehydration equipment body of the present invention;

[0041] Fig. 9 It is a schematic diagram of the local structure of the spiral sheet of the present invention;

[0042] Fig.10 It is a schematic diagram of the top view of the flocculation mixing device of the present invention.

[0043] Explanation of main figure marks: dehydration equipment body -1, flocculation mixing device -2, mixing tube mechanism -3, air vent -201, first flocculation mixing tank -202, stirring device -203, second flocculation mixing tank -204, dosing pipe -301, mud inlet pipe -302, air inlet pipe -303, flow tank -304, protrusion block -305, spiral shaft -306, motor -307, stirring rod -2031, spring -2032, stirring blade -2033, top block -2034, slide rail -2035, extrusion block -2036, electric telescopic rod -2037, brush plate -2038, spiral sheet -101, dehydration tank -102. DETAILED DESCRIPTION

[0044] The following will describe the implementation methods of the present invention in detail with reference to the accompanying drawings and embodiments, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. It should be noted that as long as there is no conflict, the various embodiments of the present invention and the various features in the embodiments can be combined with each other, and the technical solutions formed are all within the protection scope of the present invention.

[0045] Meanwhile, in the following description, many specific details are set forth for the purpose of explanation to provide a thorough understanding of the embodiments of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without the specific details or the specific manner described herein.

[0046] See also Figure 1-10The present invention provides a sludge dewatering equipment with a pipeline gas stirring flocculation device, comprising a dewatering equipment body 1, a flocculation mixing device 2, and a mixing tube mechanism 3. The flocculation mixing device 2 is divided into a first flocculation mixing tank 202 and a second flocculation mixing tank 204. The mixing tube mechanism 3 is connected to the first flocculation mixing tank 202, and the second flocculation mixing tank 204 is connected to the dewatering equipment body 1. The first flocculation mixing tank 202 is connected to the bottom of the second flocculation mixing tank 204, and the first flocculation mixing tank is open at the top. The outlet of the discharging end of the mixing tube mechanism 3 is higher than the position where the first flocculation mixing tank 202 is connected to the bottom of the second flocculation mixing tank 204, and the second flocculation mixing tank 204 is provided with a stirring device 203. The mixing tube mechanism 3 includes a dosing tube 301, A mud inlet pipe 302 and an air inlet pipe 303 are connected to the mud inlet pipe 302. The air inlet pipe 303 is externally connected to an air supply device, and the drug dosing pipe 301 is externally connected to a drug dosing device. The mud inlet pipe 302 is directly connected to a mud inlet pump or a sludge buffer tank for gravity feeding. The mixing tube mechanism 3 is provided with a static stirring and mixing mechanism. A plurality of flow tanks 304 for increasing the mixing time of sludge and the agent are installed at the lower end of the mud inlet pipe 302 of the static stirring and mixing mechanism. The flow tank 304 is a bowl-shaped structure that is wide at the top and narrow at the bottom. A protrusion 305 for changing the flow mixing direction is provided on the inner wall of the flow tank 304. The protrusion 305 is in the shape of a triangular cone. The mixing tube mechanism 3 is provided with a dynamic stirring and mixing mechanism. The dynamic stirring and mixing mechanism A screw shaft 306 for dynamic stirring is arranged in the mud inlet pipe 302, and the screw shaft 306 is driven to rotate by a motor 307. The interior of the flocculation mixing device 2 is a square stirring tank, and a partition is arranged in one corner thereof to divide the square stirring tank into a first flocculation mixing tank 202 and a second flocculation mixing tank 204. The stirring device 203 includes a stirring rod 2031, a spring 2032, a stirring blade 2033, a top block 2034, a slide rail 2035, an extrusion block 2036, an electric telescopic rod 2037, and a brush plate 2038. The stirring rod 2031 is equipped with an electric telescopic rod 2037, and the lower end of the electric telescopic rod 2037 is connected to the extrusion block 2036, and the lower end of the extrusion block 2036 and the upper end of the top block 2034 conflict with each other. A spring 2032 is connected to one side of the top block 2034, one side of the stirring blade 2033 is inserted into the stirring rod 2031 and connected to the top block 2034, the lower end of the top block 2034 is movably mounted on the slide rail 2035, the contact portion between the stirring blade 2033 and the stirring rod 2031 is fitted with a brush plate 2038, the stirring rod 2031 is inserted into the second flocculation mixing tank 204, the gas introduced by the air inlet pipe 303 is ozone, the upper end of the first flocculation mixing tank 202 is provided with an air leakage hole 201, the mud inlet pipe 302 is a circular tube, the spiral shaft 306 is fitted with the inner wall of the mud inlet pipe 302, the mud inlet pipe 302 and the spiral shaft 306 are coaxial to mix the materials more evenly, and the mixing effect is better when the spiral shaft 306 rotates countercurrently.

[0047] When the operator uses the equipment, first, the sludge is introduced into the sludge inlet pipe 302 by gravity through the sludge inlet pump or the sludge buffer tank, and at the same time, the gas supply equipment and the dosing equipment are turned on to mix the sludge into the sludge inlet pipe 302 through the gas inlet pipe 303 and the dosing pipe 301. The introduced gas can be ozone, which has an effective oxidation effect on the sludge during the mixing process. Then the sludge will pass through the flow tank 304. The mixing time of the sludge in the flow tank 304 is increased due to the speed limitation, which has the effect of preventing blockage. When the sludge flows, the direction of the flow mixing is continuously changed through the protruding block 305, which not only moves the center The fluid is pushed to the periphery, and the peripheral fluid is pushed to the center, thereby creating a good radial mixing effect. The sludge enters the first flocculation mixing tank 202 for stirring treatment by gravity or sludge delivery pump. At the same time, the dosing and aeration systems are turned on. Since the flocculation mixing tube space at the end of the sludge inlet pipe 302 is relatively closed, the air allows the sludge and the agent to be fully stirred in the narrow space. After the sludge is flocculated by air stirring, it is further mixed and stirred by the static stirring mechanism or the dynamic stirring mechanism and then enters the second flocculation mixing tank 204. The stirring rod 2031 rotates mechanically. The stirring blade 2033 stirs the mixed sludge. During the stirring, the electric telescopic rod 2037 is energized, so that the squeezing block 2036 moves back and forth up and down, the top block 2034 is squeezed, the spring 2032 is deformed, and the top block 2034 moves back and forth left and right with the action of the slide rail 2035. The stirring blade 2033 is stirred and the activity of the material is increased by the diameter change. It also effectively prevents the stirring blade 2033 from being damaged due to excessive load. When the stirring blade 2033 moves left and right, the brush plate 2036 moves back and forth. 38 will continue to brush the contact area between the stirring blade 2033 and the stirring rod 2031, which can not only prevent the stirring blade 2033 from sticking to the material, but also prevent the material from entering the stirring rod 2031. Then the sludge flocs will gradually rise after stirring, and will be discharged to the next flocculation mixing device through the outlet of the second flocculation mixing tank 204 or enter the sludge dewatering equipment. After being stirred in the flocculation mixing tank, the flocs will gradually rise and enter the dewatering tank 102 on the dewatering equipment body 1. The spiral blade 101 will rotate to dewater and separate the material, so that the dewatering process is more thorough.

[0048] It should be understood that the embodiments disclosed in the present invention are not limited to the specific processing steps or materials disclosed herein, but should be extended to equivalent substitutions of such features understood by ordinary technicians in the relevant field. It should also be understood that the terms used herein are only used for the purpose of describing specific embodiments and are not meant to be limiting.

[0049] The "embodiment" mentioned in the specification means that the specific features or characteristics described in conjunction with the embodiment are included in at least one embodiment of the present invention. Therefore, the phrases or "embodiment" appearing in various places throughout the specification do not necessarily refer to the same embodiment.

[0050] In addition, the described features or characteristics may be combined in one or more embodiments in any other suitable manner. In the above description, some specific details, such as thickness, quantity, etc., are provided to provide a comprehensive understanding of the embodiments of the present invention. However, those skilled in the relevant art will understand that the present invention can be implemented without one or more of the above specific details or can also be implemented using other methods, components, materials, etc.

Claims

1. A sludge dewatering equipment with pipeline gas stirring flocculation device, characterized in that: The structure comprises: a dehydration device body (1), a flocculation mixing device (2), and a mixing tube mechanism (3); the flocculation mixing device (2) is divided into a first flocculation mixing tank (202) and a second flocculation mixing tank (204); the mixing tube mechanism (3) is connected to the first flocculation mixing tank (202); the second flocculation mixing tank (204) is connected to the dehydration device body (1); the first flocculation mixing tank (202) and the second flocculation mixing tank (204) are connected at the bottom; the first flocculation mixing tank is open at the top; the outlet of the mixing tube mechanism (3) is higher than the outlet of the first flocculation mixing tank; The mixing tank (202) is connected to the bottom of the second flocculation mixing tank (204), and a stirring device (203) is arranged in the second flocculation mixing tank (204). The mixing tube mechanism (3) comprises a dosing tube (301), a mud inlet tube (302), and an air inlet tube (303). The mud inlet tube (302) is connected to the dosing tube (301) and the air inlet tube (303). The air inlet tube (303) is connected to an external air supply device, and the dosing tube (301) is connected to an external dosing device. The mud inlet tube (302) is directly connected to a mud inlet pump or connected to a sludge buffer tank for gravity feeding. The stirring device (203) comprises a stirring rod (2031), a spring (2032), a stirring blade (2033), a top block (2034), a slide rail (2035), an extrusion block (2036), an electric telescopic rod (2037), and a brush plate (2038). The stirring rod (2031) is equipped with an electric telescopic rod (2037). The lower end of the electric telescopic rod (2037) is connected to the extrusion block (2036). The lower end of the extrusion block (2036) is connected to the top block (2038). 34) upper ends are in contact with each other, one side of the top block (2034) is connected to a spring (2032), one side of the stirring blade (2033) is inserted into the stirring rod (2031) and is connected to the top block (2034), the lower end of the top block (2034) is movably mounted on a slide rail (2035), a brush plate (2038) is attached to the contact portion between the stirring blade (2033) and the stirring rod (2031), and the stirring rod (2031) is inserted into the second flocculation mixing tank (204); The gas introduced into the air inlet pipe (303) is ozone.

2. The sludge dewatering equipment with pipeline gas stirring flocculation device according to claim 1 is characterized by: The mixing tube mechanism (3) is provided with a static stirring and mixing mechanism.

3. The sludge dewatering equipment with pipeline gas stirring flocculation device according to claim 2 is characterized by: A plurality of flow tanks (304) for increasing the mixing time of sludge and reagents are installed at the lower end of the mud inlet pipe (302) of the static stirring and mixing mechanism. The flow tank (304) is a bowl-shaped structure that is wide at the top and narrow at the bottom. A protrusion (305) for changing the flow mixing direction is arranged on the inner wall of the flow tank (304). The protrusion (305) is in the shape of a triangular cone.

4. The sludge dewatering equipment with pipeline gas agitation flocculation device according to claim 1 is characterized by: The mixing tube mechanism (3) is provided with a dynamic stirring and mixing mechanism.

5. The sludge dewatering equipment with pipeline gas stirring flocculation device according to claim 4 is characterized by: A screw shaft (306) for dynamic stirring is arranged in the mud inlet pipe (302) of the dynamic stirring and mixing mechanism, and the screw shaft (306) is driven to rotate by a motor (307).

6. The sludge dewatering equipment with pipeline gas agitation flocculation device according to claim 1 is characterized by: The interior of the flocculation and mixing device (2) is a square stirring tank, and a partition is provided at one corner thereof to divide the square stirring tank into a first flocculation and mixing tank (202) and a second flocculation and mixing tank (204).

7. The sludge dewatering equipment with pipeline gas agitation flocculation device according to claim 1 is characterized by: An air leakage hole (201) is provided at the upper end of the first flocculation mixing tank (202).

8. The sludge dewatering equipment with pipeline gas agitation flocculation device according to claim 5 is characterized by: The mud inlet pipe (302) is in the shape of a circular tube, and the spiral shaft (306) fits closely to the inner wall of the mud inlet pipe (302).

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