Air circulation system of sludge centrifugal dewatering machine workshop

Abstract

According to the air circulation system of the sludge centrifugal dewatering machine workshop, the air supply pipe and the exhaust pipe on the two layers of the workshop are arranged at the two ends of the centrifugal machine respectively, good air flow is formed, the exhaust pipe is located at the end, where odor is most serious, of the centrifugal machine, and therefore the odor around the centrifugal machine is effectively taken away. Meanwhile, the gas collecting hood is additionally arranged to form a closed cavity around the centrifugal machine, and the closed cavity is connected to the exhaust pipe through the first pipeline, so that the deodorization efficiency is further improved. In addition, a sludge buffer bin on the first layer of the workshop is also designed in a sealed mode, and the positions of an exhaust pipe and an air supply pipe are reasonably arranged to form air supply circulation. According to the air circulation system, targeted odor collection is conducted on all areas which possibly generate odor, the exhaust pipes and the air supply pipes are rearranged in the open areas in the workshop, an effective circulation air duct is formed in the workshop, and the problems that the internal environment of the workshop is poor, odor gas cannot be effectively collected, and the internal safety of the workshop is low are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to environmental protection treatment equipment technical field, especially a kind of air circulation system of sludge centrifugal dewatering machine workshop. BACKGROUND

[0002] Sludge centrifuge is the mechanical that is applied centrifugal sedimentation principle to carry out sludge concentration or dehydration, by drum, screw conveyor, differential, main bearing, underframe, liquid-solid phase collection cavity, upper cover, motor drive device, frequency converter etc. component composition. Sludge is sent into rotary drum after being sent into hollow rotating shaft, under the action of centrifugal force generated by high-speed rotation, immediately be thrown into drum cavity. Sludge particles are due to density is larger, centrifugal force is also big, thus be thrown and stick to the inner wall of drum, form solid ring layer;Water is due to density is smaller, centrifugal force is small, thus only form liquid ring layer in the inside of solid ring layer. The sludge of solid ring layer is slowly pushed to the taper end of drum by screw conveyor, and is discharged through the discharge port of taper end of drum;Liquid of liquid ring layer is then discharged to the outside of drum by weir continuous overflow, form separated liquid, then gather, and be discharged through the liquid discharge port of another end by gravity.

[0003] Centrifuge is usually fixed on the second floor of workshop, and the discharge port is connected with a discharge pipe downward, and the liquid discharge port is connected with a liquid discharge pipe downward, and the discharge pipe and the liquid discharge pipe are both extended downward to the ground of the first floor of workshop. In the normal operation process of centrifuge, the sludge-water separation zone of centrifuge produces foul gas, which is the main area of producing foul gas. The existing air exchange pipe is arranged at both ends of centrifuge, and fresh air is difficult to reach the sludge-water separation zone near the taper end of centrifuge, so that the foul gas around the centrifuge cannot be carried away, the air circulation effect is poor, and the odor in the workshop is obvious. CONTENT OF THE UTILITY MODEL

[0004] In view of the above-mentioned shortcomings of prior art, the utility model provides a kind of air circulation system of sludge centrifugal dewatering machine workshop, the air circulation system includes centrifuge located in the second floor of workshop, the centrifuge includes the drum of transverse, the taper end of the drum is equipped with discharge port, and the end of the drum away from discharge port is equipped with liquid discharge port;The outer side of the centrifuge equipped with liquid discharge port is fixed with air supply pipe, and the outer side of the centrifuge equipped with discharge port is fixed with air extraction pipe;

[0005] The centrifuge is fixed above the ground of the second floor of workshop by support frame, and the support frame includes vertical support leg and horizontal beam frame, and the drum of centrifuge is installed in the inside of beam frame;

[0006] The segment of the rotary drum close to the slagging port is provided with a gas collecting hood below, which extends downward to the ground of the second floor of the workshop and upward to the beam frame in the vertical direction; the upper cover of the rotary drum is provided with a semi-cylindrical protective cover, the lower edge of which is fixedly connected with the beam frame, and the protective cover, the beam frame and the gas collecting hood form a closed cavity, which is connected to the air extraction pipe through a first pipeline.

[0007] Optionally, along the length direction of the rotary drum, the gas collecting hood covers the segment of the rotary drum close to the slagging port, and the range of the segment is 1 / 3-1 / 2 of the length of the rotary drum.

[0008] Optionally, the slagging port is connected downward with a slagging pipeline, and the liquid discharging port is connected downward with a liquid discharging pipeline, and the slagging pipeline extends downward to the ground of the first floor of the workshop.

[0009] Optionally, the centrifuge further comprises an obliquely arranged serial pipeline, two ends of which are connected to the slagging pipeline and the liquid discharging pipeline respectively, and the serial pipeline is located between the beam frame and the ground of the second floor of the workshop.

[0010] Optionally, a control valve is arranged at the connection between the serial pipeline and the slagging pipeline to control the flow direction of the sludge.

[0011] Optionally, the lower end of the slagging pipeline is connected to a sealed sludge buffer bin located on the ground of the first floor of the workshop, and the sludge buffer bin is connected to the air extraction pipe through a second pipeline.

[0012] Optionally, the ground of the first floor of the workshop is further provided with a screw conveyor, and the feed inlet of the screw conveyor corresponds to the sludge buffer bin.

[0013] Optionally, the air extraction pipe is also arranged around the sludge buffer bin on the ground of the first floor of the workshop; the air extraction pipe on the ground of the first floor is located in the central area of the ground of the first floor and is provided with an air supply pipe at the side wall of the ground of the first floor.

[0014] Optionally, the centrifuges on the ground of the second floor are arranged in parallel.

[0015] Optionally, the air supply pipes arranged in a straight line on the ground of the second floor are connected through an air supply main pipe; and the air extraction pipes arranged in a straight line on the ground of the second floor are connected through an air extraction main pipe.

[0016] The air circulation system of the sludge centrifugal dewatering machine workshop provided by the utility model has the advantages that the air circulation system sets the air supply pipe and the air exhaust pipe of the second floor of the workshop at the two ends of the centrifugal machine, forms good air flow, and the air exhaust pipe is located at the end where the centrifugal machine produces the most serious odor, so that the odor around the centrifugal machine is effectively taken away. Meanwhile, the gas collecting cover is additionally arranged to form a closed cavity around the centrifugal machine, the closed cavity is connected to the air exhaust pipe through the first pipeline, so that the odor around the centrifugal machine is effectively limited to avoid leakage, and the deodorization efficiency is further improved. In addition, the sludge buffer bin of the first floor of the workshop is also sealed, the air exhaust pipe of the first floor of the workshop is fixed near the sludge buffer bin and located at the central position of the first floor of the workshop, and the air supply pipe is arranged at the side of the first floor of the workshop, so that air supply circulation is formed.

[0017] The air circulation system is designed according to years of operation experience, the odor of each possible odor area is collected, the air exhaust pipe and the air supply pipe are rearranged in the open area of the workshop, the effective circulating air duct is formed in the workshop, the problems of poor internal environment of the workshop, the odor gas cannot be effectively collected, and the safety of the internal environment of the workshop is low are solved. The internal environment of the workshop is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A side view schematic diagram of the air pipe arrangement around the centrifugal machine in the embodiment one of the utility model is shown.

[0019] Figure 2 A structure schematic diagram of the centrifugal machine in the embodiment one of the utility model is shown.

[0020] Figure 3 A top view schematic diagram of the first floor of the workshop in the embodiment one of the utility model is shown.

[0021] Figure 4 A top view schematic diagram of the second floor of the workshop in the embodiment one of the utility model is shown.

[0022] Element number explanation

[0023] Drum 10, air supply pipe 21, air exhaust pipe 22, support leg 13, cross beam frame 12, gas collecting cover 14, protective cover 11, closed cavity 20, slag discharge pipeline 18, series pipeline 17, liquid discharge pipeline 16, control valve 19, sludge buffer bin 25, second pipeline 24, first pipeline 23, screw conveyor 30, air exhaust main pipe 31, air exhaust main pipe 32. DETAILED DESCRIPTION

[0024] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0025] In the detailed description of the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged and not to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0026] For ease of description, spatial relation terms such as “below,” “under,” “lower than,” “below,” “above,” and “upper” may be used herein to describe the relationship between one element or feature shown in the accompanying drawings and other elements or features. It will be understood that these spatial relation terms are intended to include directions other than those depicted in the drawings for the device in use or operation. Furthermore, when a layer is referred to as being “between” two layers, it can be the only layer between the two layers, or there may be one or more layers in between. The phrase “between” as used herein includes both endpoint values.

[0027] In the context of this application, the structure described above the first feature may include embodiments in which the first and second features are formed in direct contact, or embodiments in which additional features are formed between the first and second features, such that the first and second features may not be in direct contact.

[0028] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention. Therefore, the illustrations only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0029] Example 1

[0030] like Figures 1 to 4 As shown, this embodiment provides an air circulation system for a sludge centrifugal dewatering machine workshop, including:

[0031] The centrifuge located on the second floor of the workshop includes a horizontally placed rotating drum 10. The drum 10 has a slag discharge port at its conical end and a liquid discharge port at the end of the drum 10 away from the slag discharge port. An air supply pipe 21 is fixed to the outside of the centrifuge with the liquid discharge port, and an exhaust pipe 22 is fixed to the outside of the centrifuge with the slag discharge port. The air supply pipe and the exhaust pipe are located on both sides of the centrifuge, forming a horizontal airflow that can effectively remove odors around the centrifuge.

[0032] The centrifuge is fixed above the ground on the second floor of the workshop by a support frame, which includes vertical support legs 13 and horizontal beam frame 12. The centrifuge drum 10 is installed inside the beam frame 12.

[0033] A gas collecting hood 14 is provided below the section of the rotating drum 10 near the slag discharge port. Vertically, the gas collecting hood 14 extends downward to the floor of the second floor of the workshop and upward to the crossbeam frame 12. A semi-cylindrical protective cover 11 is provided on top of the rotating drum 10. The lower edge of the protective cover 11 is fixedly connected to the crossbeam frame 12. The protective cover 11, the crossbeam frame 12, and the gas collecting hood 14 form a sealed cavity 20. The sealed cavity 20 is connected to the exhaust pipe 22 through the first pipe 23.

[0034] Furthermore, along the length of the drum, the gas collection hood 14 covers a section of the drum near the slag discharge port for 1 / 3 to 1 / 2 of the drum length, in order to cover the area where the centrifuge generates the most odor.

[0035] Furthermore, a slag discharge port is connected downwards to a slag discharge pipe 18, and a liquid discharge port is also connected downwards to a slag discharge pipe 18, extending downwards to the first floor of the workshop. The centrifuge also includes an inclined series pipe 17, with its two ends connected to the slag discharge pipe 18 and the liquid discharge pipe 16, respectively. The series pipe 17 is located between the crossbeam frame 12 and the second floor of the workshop. Because the centrifuge rotates slowly when it first starts, it cannot separate the sludge into solid and liquid components. The solid-liquid mixture enters the slag discharge port through the conical section and then flows through the series pipe into the liquid discharge pipe, thus not affecting the treatment of the solid sludge below. Once the centrifuge is running normally, the solid sludge is discharged downwards normally along the slag discharge pipe. A control valve 19 is provided at the connection between the series pipe and the slag discharge pipe to control the sludge flow direction.

[0036] Furthermore, the lower end of the slag discharge pipe 18 is connected to a sealed sludge buffer chamber 25 located on the first floor of the workshop, and the sludge buffer chamber 25 is connected to the exhaust pipe 22 through the second pipe 24.

[0037] Furthermore, a screw conveyor 30 is also installed on the first floor of the workshop. The feed inlet of the screw conveyor is set in accordance with the sludge buffer bin to transport the sludge outward.

[0038] Further, the exhaust pipe is also arranged around the sludge buffer bin 25 on the first floor of the workshop, so as to shorten the distance between the exhaust pipe and the sludge buffer bin 25, effectively suck the odor around the sludge buffer bin 25, and because the sludge buffer bin 25 is located at the feeding port of the screw conveyor, the exhaust pipe is also located around the feeding port of the screw conveyor. The exhaust pipe on the first floor of the workshop is located at the central position of the first floor of the workshop, and the air supply pipe is arranged at the side wall of the first floor of the workshop, so as to form the air supply circulation from the side wall to the center. Figure 3 As shown in the figure, a plurality of exhaust pipes are connected through the exhaust main pipe 31.

[0039] Further, the centrifugal machines on the second floor of the workshop are arranged in parallel. Figure 4 As shown in the figure, the air supply pipes and the exhaust pipes on the second floor of the workshop are also arranged in parallel, the plurality of air supply pipes are connected through the air supply main pipe, and the plurality of exhaust pipes are connected through the exhaust main pipe 32.

[0040] In summary, the air circulation system of the sludge centrifugal dewatering machine workshop is provided, the air supply pipe and the exhaust pipe on the second floor of the workshop are arranged at both ends of the centrifugal machine, so as to form good air flow, and the exhaust pipe is located at the end where the odor is the most serious, so as to effectively carry away the odor around the centrifugal machine. At the same time, the gas collecting hood is added to form a closed cavity around the centrifugal machine, the closed cavity is connected to the exhaust pipe through the first pipeline, so as to effectively limit the odor around the centrifugal machine and avoid leakage, and further improve the deodorization efficiency. In addition, the sludge buffer bin on the first floor of the workshop is also sealed, the exhaust pipe on the first floor of the workshop is fixed around the sludge buffer bin, the exhaust pipe is located at the central position of the first floor of the workshop, and the air supply pipe is arranged at the side of the first floor of the workshop, so as to form the air supply circulation.

[0041] The design of the air circulation system refers to the operation experience for many years, the odor is collected in the areas where the odor is generated, and the exhaust pipe and the air supply pipe are rearranged in the open area of the workshop, so as to form the effective circulation air duct in the workshop, solve the problems that the internal environment of the workshop is poor, the odor gas cannot be effectively collected, and the safety of the internal environment of the workshop is low. The internal environment of the workshop is always ensured to be "odor can be collected, and fresh air can be supplied in real time", which greatly improves the internal environment of the workshop.

[0042] The above embodiments only exemplarily illustrate the principle and effect of the utility model, and are not used to limit the utility model. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. An air circulation system for a sludge centrifugal dewatering machine workshop, characterized in that, The air circulation system includes a centrifuge located on the second floor of the workshop. The centrifuge includes a horizontally placed drum with a slag discharge port at the conical end and a liquid discharge port at the end of the drum away from the slag discharge port. An air supply pipe is fixed to the outside of the centrifuge with the liquid discharge port, and an exhaust pipe is fixed to the outside of the centrifuge with the slag discharge port. The centrifuge is fixed above the ground on the second floor of the workshop by a support frame, which includes vertical support legs and a horizontal beam frame. The centrifuge drum is installed inside the beam frame. A gas collecting hood is provided below the section of the drum near the slag discharge port. The gas collecting hood extends downward to the floor of the second floor of the workshop and upward to the crossbeam frame. A semi-cylindrical protective cover is provided on the top of the drum. The lower edge of the protective cover is fixedly connected to the crossbeam frame. The protective cover, the crossbeam frame and the gas collecting hood form a sealed cavity. The sealed cavity is connected to the exhaust pipe through the first pipeline.

2. The air circulation system of the sludge centrifugal dewatering machine workshop according to claim 1, characterized in that: Along the length of the drum, the gas collecting hood covers a section of the drum near the slag discharge port that is 1 / 3 to 1 / 2 of the drum length.

3. The air circulation system of the sludge centrifugal dewatering machine workshop according to claim 1, characterized in that: The slag discharge port is connected to a slag discharge pipeline downwards, the liquid discharge port is connected to a slag discharge pipeline downwards, and the slag discharge pipeline extends downwards to the first floor of the workshop.

4. The air circulation system of the sludge centrifugal dewatering machine workshop according to claim 3, characterized in that: The centrifuge also includes an inclined series pipeline, with its two ends connected to a slag discharge pipeline and a liquid discharge pipeline, respectively. The series pipeline is located between the crossbeam frame and the second floor of the workshop.

5. The air circulation system of the sludge centrifugal dewatering machine workshop according to claim 4, characterized in that: A control valve is installed at the connection between the series pipeline and the sludge discharge pipeline to control the direction of sludge flow.

6. The air circulation system of the sludge centrifugal dewatering machine workshop according to claim 3, characterized in that: The lower end of the slag discharge pipeline is connected to a sealed sludge buffer chamber located on the first floor of the workshop, and the sludge buffer chamber is connected to the exhaust pipe through a second pipeline.

7. The air circulation system of the sludge centrifugal dewatering machine workshop according to claim 6, characterized in that: A screw conveyor is also installed on the first floor of the workshop, and the feed inlet of the screw conveyor is set in the sludge buffer silo.

8. The air circulation system of the sludge centrifugal dewatering machine workshop according to claim 6, characterized in that: The sludge buffer tank on the first floor of the workshop is also surrounded by exhaust pipes; the exhaust pipes on the first floor of the workshop are located in the central area of ​​the first floor of the workshop, and the air supply pipes are installed on the side walls of the first floor of the workshop.

9. The air circulation system of the sludge centrifugal dewatering machine workshop according to claim 1, characterized in that: The centrifuges located on the second floor of the workshop are arranged in parallel.

10. The air circulation system of the sludge centrifugal dewatering machine workshop according to claim 1, characterized in that: It includes a plurality of air supply pipes arranged in a straight line on the second floor of the workshop, and the plurality of air supply pipes are connected by a main air supply pipe; it also includes a plurality of exhaust pipes arranged in a straight line on the second floor of the workshop, and the plurality of air supply pipes are connected by an exhaust pipe.

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