Half-dry sludge conveying device

Abstract

The utility model discloses a semi-dry sludge conveying device which comprises a semi-dry sludge temporary storage bin, at least two hanging lugs are arranged on the side wall of the semi-dry sludge temporary storage bin, each hanging lug is connected and fixed with profile steel above the top layer of a supporting platform, and the semi-dry sludge temporary storage bin is provided with a low material level switch and a high material level switch; the weighing module is matched with the hanging lug, the weighing module is located between the hanging lug and the profile steel, and the hanging lug is placed on the weighing module; the input end of the bin bottom discharging screw is connected with the bottom of the semi-dry sludge temporary storage bin, and the output end of the bin bottom discharging screw is connected with the feeding end of the sludge incinerator; the bin bottom discharging screw is in signal interlocking with the low material level switch, the high material level switch and the weighing module. The system has the advantages that the risk that weighing errors are large due to the fact that the types of solid equipment are complex is reduced, the precision of the weighing module is improved, the treatment capacity of the incinerator is monitored and evaluated in real time, and the conveying stability of semi-dry sludge and the operation stability of the incinerator are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection, in particular to a semi-dry sludge conveying device. Background Art

[0002] Semi-dry sludge usually refers to semi-fluid plastic high-temperature sludge with a moisture content of 65%-70%, which has the characteristics of viscosity, gelatinous, poor fluidity, easy to harden and difficult to measure. In order to achieve stable and continuous transportation of semi-fluid plastic high-temperature sludge between the dryer and the incinerator, the existing transportation system connects the sludge buffer bin with the bin bottom unloading spiral, the bottom of the sludge buffer bin is connected to the top steel plate of the support platform, and the four column feet of the support platform are placed on the weighing module. The weighing module weighs the sludge to achieve sludge transportation. However, due to the placement of multiple solid devices on the weighing module of this method, the weighing measurement error is large, and this fixing method is difficult to design for the steel platform; and this method cannot adjust the unloading and conveying speed in real time according to the weighing data and the sludge content in the bin, resulting in the inability to stably convey the semi-dried sludge to the incinerator, and thus the stable operation of the incinerator cannot be guaranteed. Utility Model Content

[0003] In order to solve the above problems, the purpose of the utility model is to provide a semi-dry sludge conveying device.

[0004] The present invention provides a semi-dry sludge conveying device, which comprises:

[0005] A semi-dry sludge buffer bin, the side wall of which is provided with at least two hanging ears, each of which is connected and fixed to the steel section above the top layer of the supporting platform, and the semi-dry sludge buffer bin is provided with a low material level switch and a high material level switch;

[0006] A weighing module is matched with the hanging ear, the weighing module is located between the hanging ear and the steel section, and the hanging ear is placed on the weighing module;

[0007] A bottom unloading screw, the input end of which is connected to the bottom of the semi-dry sludge buffer bin, and the output end of which is connected to the feed end of the sludge incinerator;

[0008] The silo bottom unloading screw is interlocked with the low material level switch, the high material level switch and the weighing module signal.

[0009] As a further improvement of the utility model, the bottom unloading screw of the silo adopts two sets of shaftless double-screw variable frequency conveyors, and the two sets of shaftless double-screw variable frequency conveyors are respectively arranged on both sides of the bottom of the semi-dry sludge buffer silo;

[0010] The shaftless double-helix variable frequency conveyor is provided with two groups of spiral blades, the rotation directions of the two groups of spiral blades are opposite, and each group of spiral blades is provided with an independent motor.

[0011] As a further improvement of the present invention, the shaftless double-helix variable frequency conveyor is provided with a spiral sewage outlet, and the spiral sewage outlet is inclined at 45° to the horizontal direction of the bottom of the shaftless double-helix variable frequency conveyor.

[0012] As a further improvement of the utility model, a spiral bottom lining strip is arranged in the housing of the shaftless double-spiral variable frequency conveyor.

[0013] As a further improvement of the utility model, the side wall of the semi-dry sludge buffer bin is provided with a fresh air inlet, an odor reflux interface and an odor interface.

[0014] As a further improvement of the utility model, the side wall of the semi-dry sludge buffer bin is provided with an observation port and / or a viewing mirror.

[0015] As a further improvement of the utility model, a flushing water interface is provided on the side wall of the semi-dry sludge buffer bin.

[0016] As a further improvement of the utility model, the two ends of the shaftless double-helix variable frequency conveyor are respectively provided with a discharge port, the discharge port is provided with a gate valve, the gate valve is connected to the chute through a second flexible connecting pipe, the chute is connected to the plunger pump, and the plunger pump is connected to the feed end of the sludge incinerator.

[0017] As a further improvement of the utility model, the gate valve is a pneumatic gate valve, and a limit running track is arranged inside the gate valve.

[0018] As a further improvement of the utility model, the semi-dry sludge buffer bin is provided with a feed port, and the feed port is connected to the sludge drying machine via a first flexible connecting pipe.

[0019] The beneficial effects of the utility model are:

[0020] (1) The fixed equipment involved in the weighing module is the semi-dry sludge buffer bin body and the bin bottom unloading screw, which reduces the risk of large weighing errors caused by the variety of solid equipment and improves the accuracy of the weighing module.

[0021] (2) The bottom unloading screw is interlocked with the low material level switch, high material level switch and weighing module signal to realize real-time monitoring and evaluation of the incinerator processing volume, ensuring the stability of semi-dry sludge transportation and the stability of sludge incinerator operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor.

[0023] Figure 1 This is a structural schematic diagram of a semi-dry sludge transmission device according to an embodiment of the utility model;

[0024] Figure 2 This is a structural schematic diagram of a weighing module in a semi-dry sludge transmission device according to an embodiment of the utility model;

[0025] Figure 3 It is a schematic diagram of the structure of the spiral blades of a shaftless double-screw variable frequency conveyor in a semi-dry sludge transmission device according to an embodiment of the utility model;

[0026] Figure 4 It is a structural schematic diagram of the bottom of a shaftless double-screw variable frequency conveyor in a semi-dry sludge transmission device described in an embodiment of the utility model.

[0027] In the figure,

[0028] 1. First flexible connecting pipe; 2. Fresh air outlet; 3. Flushing water interface; 4. Semi-dry sludge buffer bin; 5. Bin bottom unloading screw; 6. High material level switch; 7. Low material level switch; 8. Weighing module; 9. Odor reflux interface; 10. Observation port; 11. Odor interface; 12. Sight glass; 13. Steel section; 14. Gate valve; 15. Second flexible connecting pipe; 16. Spiral sewage outlet; 17. Support platform; 18. Chute; 19. Spiral bottom lining strip; 20. Motor; 21. Spiral blade. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, in the description of the present utility model, the terms used are only for illustrative purposes and are not intended to limit the scope of the present utility model. The terms "include" and / or "comprise" are used to specify the existence of the elements, steps, operations and / or components, but do not exclude the existence or addition of one or more other elements, steps, operations and / or components. The terms "first", "second" and the like may be used to describe various elements, do not represent the order, and do not limit these elements. In addition, in the description of the present utility model, unless otherwise specified, the meaning of "multiple" is two and more than two. These terms are only used to distinguish one element from another element. In conjunction with the following drawings, these and / or other aspects become apparent, and it is easier for a person of ordinary skill in the art to understand the description of the embodiments described in the present utility model. The accompanying drawings are used to describe the embodiments described in the present utility model for illustrative purposes only. Those skilled in the art will easily recognize from the following description that, without departing from the principles described in the present utility model, alternative embodiments of the structures and methods shown in the present utility model can be adopted.

[0032] like Figure 1 As shown, a semi-dry sludge transmission device described in an embodiment of the utility model includes:

[0033] The semi-dry sludge buffer bin 4 has at least two hanging ears on its side wall, each of which is connected and fixed to the steel 13 above the top layer of the support platform 17, and the semi-dry sludge buffer bin 4 is provided with a low material level switch 7 and a high material level switch 6;

[0034] A weighing module 8 is matched with the hanging ear, the weighing module 8 is located between the hanging ear and the steel section 13, and the hanging ear is placed on the weighing module 8;

[0035] The bottom unloading screw 5 has an input end connected to the bottom of the semi-dry sludge buffer 4, and an output end connected to the feed end of the sludge incinerator;

[0036] The silo bottom unloading screw 5 is signal interlocked with the low material level switch 7 , the high material level switch 6 and the weighing module 8 .

[0037] The present application sets at least two hanging ears on the side wall of the semi-dry sludge buffer bin 4, and connects each hanging ear to the steel section 13 on the top of the supporting platform 17, so that the semi-dry sludge buffer bin 4 is supported on the supporting platform 17, and at least two weighing modules 8 are set at the same time, that is, the hanging ears and the weighing modules 8 are matched, each weighing module 8 is located between the hanging ears and the steel section 13 (that is, the connection between the hanging ears and the steel section 13), and the hanging ears are placed on the weighing device 8. At this time, the semi-dry sludge buffer bin 4 is supported on the steel section 13 by at least two hanging ears connected to the steel section 13, and the sludge in the semi-dry sludge buffer bin 4 can be weighed by at least two weighing devices 8. In the above-mentioned setting, since the semi-dry sludge buffer bin 4 is directly placed on the weighing module 8, the weighing module 8 only bears the weight of the semi-dry sludge buffer bin 4 through the hanging ears, and no other redundant fixing devices are placed on the weighing module 8, which reduces the risk of large weighing errors caused by the variety of solid equipment, and can achieve accurate measurement of the sludge content in the semi-dry sludge buffer bin 4. When the semi-dry sludge buffer bin 4 does not store semi-dry sludge, the weighing module 8 weighs a weight as an initial value. After feeding, the difference between the real-time value and the initial value weighed by the weighing module is the current weight of the semi-dry sludge. The present application stably fixes the semi-dry sludge buffer bin 4 on the steel section 13 by setting at least two hanging ears on the side wall, that is, at least one hanging ear on each side. It can be understood that it can also be connected to the steel section 13 by setting a larger number of hanging ears, and the design can be adaptively designed according to the size and volume of the semi-dry sludge bin 4. Preferably, four hanging ears are set on the side wall of the semi-dry sludge buffer bin 4, such as Figure 1 As shown, two hanging ears are correspondingly arranged on each side wall, which are connected to the steel section through four ear hooks, so that the steel section 13 can better stably support the semi-dry sludge buffer bin, and four weighing modules 8 are matched to further improve the measurement accuracy.

[0038] On the other hand, since a low level switch 7 and a high level switch 6 are provided in the semi-dry sludge buffer bin 4, the high and low level conditions of the sludge in the bin are monitored in real time, and the low level switch 7, the high level switch 6 and the weighing device 8 are signal interlocked with the bin bottom unloading screw 5, so that the device can adjust the rotation speed of the bin bottom unloading screw 5 in real time according to the condition of the bin level and the current weight of the weighed sludge, and then adjust the speed of conveying from the sludge buffer bin 4 to the sludge incinerator in real time, so as to ensure that the sludge incinerator can continuously feed sludge, ensure the stable operation of the sludge incinerator, and reduce the risk of the entire system shutting down due to the alarm of the sludge incinerator. If the sludge weight weighed by the weighing module 8 at the current moment is greater than the preset first threshold value, or when the high level switch 6 alarms, the rotation speed of the bin bottom unloading screw 5 is interlocked to increase its rotation speed; if the sludge weight weighed by the weighing module 8 at the current moment is less than the preset second threshold value, or when the low level switch 7 alarms, the rotation speed of the bin bottom unloading screw 5 is interlocked to reduce its rotation speed.

[0039] In one embodiment, the bottom unloading screw 5 adopts two sets of shaftless double-helix variable frequency conveyors, which are respectively arranged on both sides of the bottom of the semi-dry sludge buffer bin 4. The shaftless double-helix variable frequency conveyor is provided with two sets of spiral blades 21, the two sets of spiral blades rotate in opposite directions, and each set of spiral blades 21 is provided with an independent motor.

[0040] The present application adopts two groups of shaftless double-screw variable frequency conveyors in the bin bottom unloading screw 5, and can control the operating speed and power of the two groups of shaftless double-screw conveyors according to actual needs, thereby improving the unloading efficiency and avoiding unnecessary energy waste, reducing energy consumption costs. In addition, the two groups of shaftless double-screw conveyors can share the unloading task, reduce the load of a single device, extend the service life of the equipment, and improve the reliability and stability of the equipment. When one group of shaftless double-screw conveyors is blocked, the other group can still continue to work, which can effectively reduce the risk of blockage.

[0041] The semi-dry sludge buffer bin 4 is made of steel, and is preferably rectangular in shape. Preferably, the length of the shaftless double-screw variable frequency conveyor is consistent with the bottom length of the semi-dry sludge buffer bin 4, ensuring that the sludge can be smoothly conveyed at both ends of the spiral without forming a vortex, and avoiding the sludge in the vortex from self-sustaining fermentation with the accumulation of running time, producing gas and plastic sludge with higher viscosity, thereby reducing the sludge falling resistance and corrosiveness and reducing the failure rate of the spiral and the device.

[0042] The shaftless double-helix variable frequency conveyor of the present application continuously rotates the spiral blades, so that the semi-dry sludge is continuously pushed forward and squeezed, tumbled and rubbed by the spiral blades, thereby realizing the transportation of the semi-dry sludge. The double-helix design makes the unloading more rapid and continuous, effectively reducing the unloading time, and the double-helix conveyor can continuously unload at different positions at the same time, ensuring the uniformity of unloading, avoiding the problem of uneven unloading caused by accumulation and backlog, and the spiral blades 21 have forward and reverse rotation functions, and the two groups of spiral blades 21 of each group of shaftless spiral variable frequency conveyors have opposite rotation directions, for example, the first group of the two groups of spiral blades 21 rotates clockwise along the spiral axis, and the second group rotates counterclockwise, and vice versa. Each group of spiral blades is equipped with an independent motor, and the rotation of the spiral can be realized under the drive of the motor. The motor is preferably arranged at the end of the spiral blade.

[0043] The bottom unloading screw 5 adopts two groups of shaftless double-helix variable frequency conveyors, which are respectively arranged on both sides of the bottom of the semi-dry sludge buffer bin 4. Each group of shaftless double-helix variable frequency conveyors has two groups of spiral blades, and the two groups of shaftless double-helix variable frequency conveyors have four groups of spiral blades 21. The two groups of spiral blades 21 on one side of the bottom of the semi-dry sludge buffer bin 4 have opposite rotation directions, and the two groups of spirals 21 on the other side have opposite rotation directions. By adjusting the speed frequency and rotation direction of the four groups of spiral blades 21 respectively, the sludge storage capacity and system conveying capacity inside the semi-dry sludge buffer bin 4 are adjusted, and at the same time, the compacted sludge is cut and crushed, the sludge properties are adjusted, and the continuity of sludge transportation is ensured.

[0044] In one embodiment, the shaftless double-helix variable frequency conveyor is provided with a spiral sewage outlet 16, and the spiral sewage outlet 16 is inclined at 45° to the horizontal direction of the bottom of the shaftless double-helix variable frequency conveyor. The inclined design allows residual materials to be discharged smoothly along the direction of the spiral sewage outlet 16 to avoid accumulation in the conveyor, which helps to maintain the normal operation and clean state of the conveyor. Avoiding material blockage can improve the stability and efficiency of the conveyor, reduce the number of shutdowns for maintenance, and improve production efficiency.

[0045] In one embodiment, a spiral bottom lining strip 19 is provided in the housing of the shaftless double-helix variable frequency conveyor to protect the conveyor, reduce the impact force generated by sludge self-flow and the damage to the housing and blades caused by the squeezing of sludge and blades, and avoid direct contact between sludge particles and the housing, thereby reducing the wear of the spiral housing and increasing its service life.

[0046] Optionally, the spiral bottom lining strip 19 may be a stainless steel lining strip, and the material and thickness of the spiral bottom lining strip 19 are not specifically limited in this application, as long as the wear of the spiral shell can be reduced.

[0047] In one embodiment, the side wall of the semi-dry sludge buffer bin 4 is provided with a fresh air inlet 2, an odor reflux interface 9 and an odor interface 11. 。 By providing a fresh air inlet 2 on the side wall of the semi-dry sludge buffer bin 4, and by providing an odor reflux interface 9 and an odor interface 11, the fermentation gas generated by the semi-dry sludge stored in the semi-dry sludge buffer bin 4 is recovered and purified, and the pressure in the conveying system is adjusted while purifying the air in the bin, so as to realize the recycling of gas in the system, thereby avoiding repeated shutdown and restart of the system due to excessive fermentation gas in the bin.

[0048] In one embodiment, the side wall of the semi-dry sludge buffer bin 4 is provided with an observation port 10 and / or a mirror 12. By providing the mirror 12 on the side wall of the semi-dry sludge buffer bin 4, the internal condition of the semi-dry sludge buffer bin 4 can be observed in real time, so that corresponding measures can be taken after timely discovery of problems to ensure the normal operation and processing of the semi-dry sludge conveying device. By providing the observation port 10 on the side wall of the semi-dry sludge buffer bin 4, on the one hand, a visual inspection of the interior of the equipment can be achieved, which helps to timely discover potential problems or damages and take appropriate measures to repair them, thereby reducing downtime and production losses. On the other hand, the observation port 10 is set to be large enough to facilitate the staff to enter and exit the buffer bin to inspect the equipment, thereby improving the convenience of operation. Through regular inspection and maintenance, problems in the equipment can be discovered and repaired in a timely manner to prevent the problems from further deteriorating and extend the service life of the equipment.

[0049] In one embodiment, a flushing water interface 3 is provided on the side wall of the semi-dry sludge buffer bin 4. The flushing water interface 3 of the semi-dry sludge buffer bin 4 is connected to flushing water. When the system is shut down, the flushing water interface 3 is opened to clean the sludge adhering to the wall in the bin, further preventing the sludge from generating gas due to long-term storage in the bin and self-sustaining fermentation in the spiral, causing the system to be repeatedly stopped and started, and the cleaned sewage can be discharged through the sewage outlet 16; when the sludge dryer is unstable, the flushing water interface 3 is opened to adjust the moisture content of the sludge output of the sludge dryer, so as to prevent the large change in the moisture content of the sludge output of the sludge dryer, thereby affecting the stable operation of the incinerator.

[0050] In one embodiment, a discharge port is provided at each end of the shaftless spiral variable frequency conveyor, which can prevent the sludge from self-rotating inside the spiral ends, thereby reducing the running resistance at the motor 20 end, increasing the overall service life of the spiral blade 21, and realizing uniform and continuous sludge transportation. The discharge port is provided with a gate valve 14, and the gate valve 14 is connected to a chute 18 through a second flexible connecting pipe 15. The chute 18 is connected to a plunger pump, and the plunger pump is connected to the feed end of the sludge incinerator. The chute 18, as a connecting channel, can effectively guide the sludge to flow to the plunger pump, avoid sludge blockage or leakage during transportation, and ensure the continuous transportation of sludge. The plunger pump realizes the continuous transportation of sludge through the reciprocating motion of the plunger, and avoids the problem that the discharge end of the sludge feeder in the prior art directly probes into the furnace of the sludge incinerator, causing unstable equipment operation, blockage or failure, thereby reducing the equipment and system failure rate.

[0051] Optionally, the material of the second flexible connecting tube 15 can be selected from one or more of polyester, silicone, and stainless steel. For example, polyester material (such as EP100 polyester), silicone material, stainless steel material (such as SS304 stainless steel), a combination of polyester and silicone, a combination of stainless steel and silicone, a combination of polyester, silicone and stainless steel, etc. are used. This application does not make specific restrictions, and the effect of hardening by avoiding high-temperature sludge corrosion can be achieved. It can also be understood that the second flexible connecting tube can be a flexible connecting tube made of multiple layers of materials, such as polyester, silicone, polyester, silicone and SS304 stainless steel arranged in layers, so that the second flexible connecting tube has a certain hardness to increase the service life while ensuring a flexible connection.

[0052] In one embodiment, the gate valve 14 is a pneumatic gate valve, and a limited running track is set inside it. The setting of the pneumatic gate valve can effectively control the flow, cut off the fluid, avoid leakage, facilitate the maintenance work during actual operation, and can timely cut off the mud entering the incinerator, reduce the risk of frequent start and stop of the system, and improve the reliability of the system, so as to better manage and control the transportation process of semi-dry sludge. Its limited running track can ensure that the valve plate moves according to the specified track when opening and closing, and avoid the valve plate from being damaged or deformed due to abnormal movement. Due to the characteristics of semi-dry sludge, the flow may not be smooth enough, and it may even cause blockage or accumulation near the valve. In this case, setting a limited running track can help the valve plate to operate more stably, avoid the valve plate being affected by the sludge and being blocked or deviating from the track, and reduce the deformation and ectopic failure rate of the valve plate inside the gate valve 14 caused by the hardening of the sludge during long-term operation, thereby causing the gate valve to be poorly sealed and leaking mud.

[0053] In one embodiment, the semi-dry sludge buffer bin 4 is provided with a feed port, and the feed port is connected to the sludge dryer through the first flexible connecting pipe 1. The material of the first flexible connecting pipe 1 is the same as that of the second flexible connecting pipe 15, see the material of the second flexible connecting pipe 15 above, which will not be repeated here.

[0054] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0055] In addition, it will be understood by those skilled in the art that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0056] It will be appreciated by those skilled in the art that, although the present invention has been described with reference to exemplary embodiments, various changes may be made and equivalents may be substituted for its elements without departing from the scope of the present invention. In addition, many modifications may be made to adapt specific circumstances or materials to the teachings of the present invention without departing from the essential scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed, but the present invention will include all embodiments falling within the scope of the appended claims.

Claims

1. A semi-dry sludge conveying device, characterized in that: The device comprises: A semi-dry sludge buffer bin, the side wall of which is provided with at least two hanging ears, each hanging ear is connected and fixed to the steel section above the top layer of the supporting platform, and the semi-dry sludge buffer bin is provided with a low material level switch and a high material level switch; A weighing module is matched with the hanging ear, the weighing module is located between the hanging ear and the steel section, and the hanging ear is placed on the weighing module; A bottom unloading screw, the input end of which is connected to the bottom of the semi-dry sludge buffer bin, and the output end of which is connected to the feed end of the sludge incinerator; The silo bottom unloading screw is interlocked with the low material level switch, the high material level switch and the weighing module signal.

2. The device according to claim 1, wherein: The bottom unloading screw of the silo adopts two sets of shaftless double-screw variable frequency conveyors, and the two sets of shaftless double-screw variable frequency conveyors are respectively arranged on both sides of the bottom of the semi-dry sludge buffer silo; The shaftless double-helix variable frequency conveyor is provided with two groups of spiral blades, the rotation directions of the two groups of spiral blades are opposite, and each group of spiral blades is provided with an independent motor.

3. The device as claimed in claim 2, wherein: The shaftless double-helix variable frequency conveyor is provided with a spiral sewage outlet, and the spiral sewage outlet is inclined at 45 degrees to the horizontal direction of the bottom of the shaftless double-helix variable frequency conveyor.

4. The device according to claim 2, wherein: A spiral bottom lining strip is arranged in the housing of the shaftless double-screw variable frequency conveyor.

5. The device according to claim 1, wherein: The side wall of the semi-dry sludge buffer bin is provided with a fresh air inlet, an odor reflux interface and an odor interface.

6. The device according to claim 1, wherein: The side wall of the semi-dry sludge buffer bin is provided with an observation port and / or a viewing mirror.

7. The device of claim 1, wherein: A flushing water interface is provided on the side wall of the semi-dry sludge buffer bin.

8. The device of claim 2, wherein: The shaftless double-screw variable frequency conveyor is provided with a discharge port at each end, and the discharge port is provided with a gate valve, and the gate valve is connected to the chute through a second flexible connecting pipe, and the chute is connected to the plunger pump, and the plunger pump is connected to the feed end of the sludge incinerator.

9. The device of claim 8, wherein: The gate valve is a pneumatic gate valve, and a limit running track is arranged inside the gate valve.

10. The device of claim 1, wherein: The semi-dry sludge buffer bin is provided with a feed port, and the feed port is connected to the sludge drying machine through a first flexible connecting pipe.

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