Squeezing device for sludge depth reduction

Abstract

The embodiment of the utility model provides a squeezing device for sludge depth reduction, and relates to the technical field of sludge treatment. The squeezing device for sludge depth reduction comprises a conditioner storage tank and a wet sludge bin, sludge conditioning tanks are arranged at the output end of the conditioner storage tank and the output end of the wet sludge bin, and vertical sludge squeezers are arranged at the output ends of the sludge conditioning tanks. And a dry sludge conveying system for conveying the squeezed sludge is erected at the sludge discharge end of the vertical sludge squeezer. The water content of the sludge can be reduced to below 50% by adopting the vertical sludge squeezer; meanwhile, the addition amount of a sludge conditioning agent is small, only one liquid agent is added, lime is not added, and compared with other deep dehydration devices, the addition amount of the agent is small, and the liquid agent does not increase the sludge amount.

Description

Technical Field

[0001] The utility model relates to the technical field of sludge treatment, in particular to a squeezing device used for deep sludge reduction. Background Art

[0002] Sludge treatment is the process of reducing, stabilizing and rendering sludge harmless by concentrating, conditioning, dehydrating, stabilizing, drying or incinerating it. Sludge is composed of solid matter in the original wastewater and solid matter generated during the wastewater treatment process.

[0003] At present, the equipment on the market for mechanical deep dehydration of sludge mainly includes ordinary box-type plate-frame machines, ultra-high pressure presses, and high-pressure belt machines. The sludge dehydration devices used by these equipment manufacturers mostly add a variety of chemicals to condition or dilute the water-containing sludge before entering the pressing equipment for mechanical dehydration. However, this type of device can only dehydrate the sludge to a moisture content of about 60%-70%, and the system is too complicated, with many supporting equipment, a large footprint, and many types of chemicals added and a large amount of chemicals.

[0004] At the same time, the possibility of resource utilization of treated sludge is relatively small, and excessive addition of chemicals will cause secondary pollution of the sludge and turn it into harmful substances, which does not meet the requirements for harmless and resource-based disposal of sludge. Utility Model Content

[0005] The purpose of the utility model is to provide a squeezing device for deep sludge reduction, which can avoid the problems of low sludge dehydration efficiency, overly complex system, many supporting equipment, large floor space, many types of added agents, large amounts of agents, low utilization rate of sludge after squeezing and harmfulness.

[0006] The utility model provides a squeezing device for deep sludge reduction, comprising a conditioning agent storage tank for storing agents and a wet sludge silo for storing sludge, wherein the output ends of the conditioning agent storage tank and the wet sludge silo are both provided with sludge conditioning tanks, and the output ends of the sludge conditioning tanks are provided with a vertical sludge press, and the vertical sludge press comprises a hydraulic station system for squeezing the sludge, a distribution system for distributing the sludge is provided below the hydraulic station system, and a filter press chamber system and a squeezing platform for storing and squeezing the sludge are provided below the distribution system, and a dry sludge conveying system for conveying the pressed sludge is provided at the mud discharge end of the vertical sludge press.

[0007] In a specific embodiment, the output end of the sludge conditioning tank is connected to a sludge discharge pipe through a flange seal, while the sludge input end of the sludge conditioning tank is connected to a sludge delivery pipe, wherein the agent input end of the sludge conditioning tank is connected to a delivery pipe.

[0008] In a specific embodiment, a mixing component for increasing sludge fluidity is arranged on the surface of the output end of the sludge delivery pipe body, and a powder stirring component is installed on the surface of the delivery pipe body.

[0009] In a specific embodiment, the mixing component includes a feeding dragon arranged in the mud feeding pipe body, and a driving member is installed at the shaft end of the feeding dragon.

[0010] In a specific implementation scheme, a transmission rod body is arranged above the feeding dragon, wherein the shaft end of the transmission rod body and the output end of the driving member are both sleeved with transmission accessories, and the transmission accessories are composed of two pulleys and a belt.

[0011] In a specific embodiment, the powder-prying assembly includes a powder-prying member movably mounted in the inner cavity of the feeding tube body, and the surface of the transmission rod body and the surface of one end of the powder-prying member extending through the outer side of the feeding tube body are respectively provided with toothed fittings.

[0012] In a specific embodiment, the powder stirring assembly further comprises a material guiding tube disposed below the surface of the feeding tube body, and the bottom of the inner cavity of the feeding tube body is connected to the material guiding tube through a material guiding groove cavity.

[0013] In a specific embodiment, one end of the surface of the mud delivery pipe body is connected to an expansion cavity shell, and the end of the expansion cavity shell is connected to the bottom of the material guiding pipe by opening a material inlet trough cavity.

[0014] In a specific embodiment, a shielding plate body is slidably provided in the inner cavity of the material guiding passage, and an assembly groove cavity is provided on the inner surface of the feeding tube body and on one side of the material guiding groove cavity.

[0015] In a specific embodiment, the shielding plate body includes an elastic member located at one end of the inner cavity of the assembly groove cavity, and the end of the shielding plate body is integrally formed with a protrusion.

[0016] The beneficial effects of this application are:

[0017] 1. The vertical sludge press can reduce the moisture content of sludge to below 50%. Compared with sludge with a moisture content of 60%-70%, the sludge volume is reduced by more than 10%-27%. At the same time, less sludge conditioning agents are added, only one liquid agent is added, and no lime is added. Compared with other deep dehydration devices, the amount of agent added is small, and liquid agents will not increase the sludge volume.

[0018] 2. On the basis of conditioning and squeezing the sludge, when the sludge is sent into the sludge conditioning tank for conditioning through the sludge feeding pipe body, the feeding dragon can increase the fluidity of the sludge so that it can quickly flow into the sludge conditioning tank for conditioning, and while the feeding dragon is working, the transmission rod body is used to move the powder-moving piece to drive the shielding plate body to move back and forth, so that part of the conditioning agent in the feeding pipe body can be sent into the sludge feeding pipe body through the material guide pipe, and the conditioning agent and the sludge during transportation are mixed in advance to improve the sludge conditioning efficiency, avoid the problem of uneven conditioning when the sludge and the conditioning agent are directly added to the sludge conditioning tank, and maximize the sludge conditioning efficiency of the sludge conditioning tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0021] Figure 2 This is a schematic structural diagram of a vertical sludge press according to an embodiment of the utility model;

[0022] Figure 3 This is a three-dimensional schematic diagram of the sludge conditioning tank structure of an embodiment of the utility model;

[0023] Figure 4 It is a schematic top view of the sludge conditioning tank structure of an embodiment of the utility model;

[0024] Figure 5 For the utility model embodiment Figure 4 3D schematic diagram of the AA section structure along the middle;

[0025] Figure 6 It is a three-dimensional exploded schematic diagram of the mud delivery pipe body and the material delivery pipe body structure of the embodiment of the utility model;

[0026] Figure 7 It is a three-dimensional schematic diagram of the structural assembly of the mixing component and the powder diverting component of the embodiment of the utility model;

[0027] Figure 8 It is a schematic diagram of a three-dimensional exploded structure of a mixing component and a powder diverting component in an embodiment of the utility model;

[0028] Fig. 9 It is a three-dimensional schematic diagram of the structure of the mixing component of an embodiment of the utility model;

[0029] Fig.10 It is a three-dimensional schematic diagram of the powder stirring assembly structure of an embodiment of the utility model.

[0030] icon:

[0031] 1. Conditioning agent storage tank;

[0032] 2. Wet sludge silo;

[0033] 3. Sludge conditioning tank; 3.1. Sludge discharge pipe body; 3.2. Sludge delivery pipe body; 3.21. Expansion chamber shell; 3.22. Feeding trough cavity; 3.23. Material guide trough cavity; 3.24. Assembly trough cavity; 3.3. Delivery pipe body;

[0034] 4. Vertical sludge press; 4.1. Hydraulic station system; 4.2. Material distribution system; 4.3. Filter press chamber system; 4.4. Pressing platform;

[0035] 5. Dry sludge conveying system;

[0036] 6. Mixing components; 6.1. Driving parts; 6.2. Feeding dragon; 6.3. Transmission rod; 6.31. Transmission accessories;

[0037] 7. Powder-pumping assembly; 7.1. Powder-pumping part; 7.11. Tooth accessories; 7.2. Shielding plate; 7.21. Elastic part; 7.3. Material guide pipe;

[0038] 8. Mounting frame;

[0039] 9. Shell protection. DETAILED DESCRIPTION

[0040] Since the equipment on the market for mechanical deep dehydration of sludge mainly includes ordinary box-type plate frame machines, ultra-high pressure presses and high-pressure belt machines, the sludge dehydration devices used by these equipment manufacturers mostly add a variety of agents to condition or dilute the water-containing sludge before entering the pressing equipment for mechanical dehydration. However, this type of device can often only dehydrate the sludge to a moisture content of about 60%-70%, and the system is too complicated, with many supporting equipment, a large floor area, many types of added agents, and a large amount of drugs. Therefore, after research, the inventor provides a squeezing device for deep sludge reduction. During use, it can avoid the problems of low sludge dehydration efficiency, overly complicated systems, many supporting equipment, a large floor area, many types of added agents, a large amount of drugs, and low utilization rate and harmfulness of sludge after squeezing, thereby solving the above-mentioned defects.

[0041] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0042] Please refer to Figures 1 to 10The embodiment of the utility model provides a squeezing device for deep sludge reduction, comprising a conditioning agent storage tank 1 for storing agents and a wet sludge silo 2 for storing sludge, wherein the conditioning agent storage tank 1 contains a stirring device and a magnetic flap liquid level gauge, and the start and stop of the delivery pump on the conditioning agent storage tank 1 is controlled according to the high, medium and low liquid levels;

[0043] Specifically, a reagent is stored in the conditioning agent storage tank 1, and the existing device first pre-treats by adding a liquid conditioning agent, and then squeezes it through a filter press. However, such traditional devices generally have a sludge moisture content higher than 60%, and it is difficult to reach below 60%. In addition, conventional practices still add powders such as lime to further reduce the moisture content of the sludge by the lime absorbing water and releasing heat. However, this method will change the properties of the sludge and increase the volume of the sludge.

[0044] The present device only needs to add one kind of agent and then enter the vertical sludge press 4. By directly applying stepped pressure on the mud cake, the intracellular water that cannot be filtered out by ordinary equipment can be released, achieving the effect of 50% water content of the mud.

[0045] Please refer to Figure 1 and Figures 3 to 10 The output ends of the conditioning agent storage tank 1 and the wet sludge silo 2 are both provided with a sludge conditioning tank 3, which is used to mix and condition the added sludge with the agent, and the sludge conditioning tank 3 contains a stirring device and an ultrasonic level meter, and the high, medium and low liquid levels control the start and stop of the sludge conditioning tank 3 delivery pump and the mixed sludge delivery pump;

[0046] The output end of the sludge conditioning tank 3 is connected to a sludge discharge pipe 3.1 through a flange seal, and the sludge input end of the sludge conditioning tank 3 is connected to a sludge delivery pipe 3.2, wherein the reagent input end of the sludge conditioning tank 3 is connected to a feed pipe 3.3;

[0047] The output end of the sludge discharge pipe body 3.1 is installed in the distribution system 4.2 of the vertical sludge press 4, and the input end of the sludge delivery pipe body 3.2 is connected to the output end of the wet sludge silo 2, and the input end of the delivery pipe body 3.3 is connected to the output end of the conditioning agent storage tank 1, so that the sludge delivery pipe body 3.2 and the delivery pipe body 3.3 can be used to deliver the sludge and the agent into the vertical sludge press 4 for mixing, and the sludge discharge pipe body 3.1 can transport the sludge to the vertical sludge press 4 for pressing.

[0048] To improve the efficiency of sludge conditioning using vertical sludge press 4, please refer to Figures 3 to 10The output end of the mud delivery pipe 3.2 is provided with a mixing component 6 for increasing the fluidity of the sludge, and the surface of the feeding pipe 3.3 is provided with a powder stirring component 7 for stirring the conditioning agent in the feeding pipe 3.3, thereby increasing the fluidity of the conditioning agent and sending part of the conditioning agent into the mud delivery pipe 3.2, so as to pre-mix the sludge;

[0049] Specifically, the mixing component 6 includes a feeding dragon 6.2 arranged in the mud feeding pipe body 3.2, and the output end of the feeding dragon 6.2 penetrates to the outside of the mud feeding pipe body 3.2. In order to drive the feeding dragon 6.2, a driving member 6.1 is installed on the shaft end of the feeding dragon 6.2, wherein the output end of the driving member 6.1 is connected to the side opposite to the shaft end of the feeding dragon 6.2, so that the feeding dragon 6.2 is driven by the driving member 6.1 to work, thereby increasing the fluidity of the sludge in the mud feeding pipe body 3.2, so that it can be quickly fed into the sludge conditioning tank 3.

[0050] In order to provide auxiliary support for the driving member 6.1, a mounting frame 8 is provided at the bottom of the driving member 6.1, and one end of the mounting frame 8 is connected to the sludge conditioning tank 3;

[0051] Among them, a transmission rod body 6.3 is arranged above the feeding dragon 6.2, wherein the shaft end of the transmission rod body 6.3 and the output end of the driving member 6.1 are both sleeved with a transmission accessory 6.31, and the transmission accessory 6.31 is composed of two pulleys and a belt. The two pulleys are sleeved on the output end of the driving member 6.1 and the shaft end of the transmission rod body 6.3 respectively, and the belt is sleeved on the two pulleys, so that the driving member 6.1 drives the feeding dragon 6.2 to drive and drives the transmission rod body 6.3 to work at the same time, and the transmission rod body 6.3 is used in conjunction with the powder plucking component 7 to assist the powder plucking component 7 in transmission;

[0052] Among them, the surface of the transmission rod body 6.3 is provided with a protective shell 9 through a bearing movable sleeve, and one end of the protective shell 9 is connected to the surface of the feeding tube body 3.3, and the surface of the transmission accessory 6.31 is provided with a protective shell through a movable sleeve, and one end of the protective shell is connected to the surface of the protective shell 9 through a connecting sleeve, so that the transmission rod body 6.3 and the transmission accessory 6.31 are protected by the protective shell 9 and the protective shell;

[0053] Specifically, the powder-pulling assembly 7 includes a powder-pulling piece 7.1 movably mounted in the inner cavity of the feeding tube 3.3, and the surface of the transmission rod 6.3 and the surface of the powder-pulling piece 7.1 that penetrates through one end of the feeding tube 3.3 are respectively sleeved with toothed fittings 7.11, and the two toothed fittings 7.11 are meshed with each other, so as to transmit the power of the transmission rod 6.3 to the powder-pulling piece 7.1, and the powder-pulling piece 7.1 is used to pump the material in the feeding tube 3.3;

[0054] Specifically, the powder-pulling assembly 7 further includes a material-conducting through-tube 7.3 disposed below the surface of the feeding tube body 3.3, and the bottom of the inner cavity of the feeding tube body 3.3 is connected to the material-conducting through-tube 7.3 by providing a material-conducting groove cavity 3.23, and the material-conducting through-tube 7.3 is used to convey part of the conditioning agent in the feeding tube body 3.3 into the feeding tube body 3.3, to pre-mix the sludge and the conditioning agent, and to increase the mixing and conditioning efficiency of the sludge conditioning tank 3;

[0055] Specifically, one end of the surface of the mud delivery pipe body 3.2 is connected to the expansion cavity shell 3.21, and the end of the expansion cavity shell 3.21 is connected to the bottom of the material guide pipe 7.3 by opening a material feeding trough cavity 3.22, wherein the bottom of the material guide pipe 7.3 is connected to the top of the expansion cavity shell 3.21;

[0056] Specifically, the inner cavity of the material guide tube 7.3 is slidably provided with a shielding plate body 7.2 for controlling the opening and closing of the inner cavity of the material guide tube 7.3. In order to adjust the shielding plate body 7.2, an assembly groove cavity 3.24 is provided on the inner surface of the feeding tube body 3.3 and located on one side of the material guide groove cavity 3.23. The material guide groove cavity 3.23 and the assembly groove cavity 3.24 are connected to each other, and the surface of the shielding plate body 7.2 is in sealing sliding contact with the inner cavity of the assembly groove cavity 3.24.

[0057] Specifically, in order to adjust the baffle plate body 7.2, the baffle plate body 7.2 includes an elastic member 7.21 located at one end of the inner cavity of the assembly groove cavity 3.24, and the elastic member 7.21 is multiple and the other end is connected to the baffle plate body 7.2, and the end of the baffle plate body 7.2 is integrally formed with a protrusion, and the side edges of the protrusion are chamfered, so that when the surface blades of the powder plucking member 7.1 pry the material and move to contact the protrusion above the baffle plate body 7.2, the baffle plate body 7.2 is pushed into the assembly groove cavity 3.24, so that the conditioning agent therein flows into the mud delivery pipe body 3.2 through the material guide groove cavity 3.23 and the material guide pipe 7.3, and the sludge and the agent are pre-mixed and transported by the feeding dragon 6.2, so as to avoid the problem of low efficiency of directly mixing the sludge and the agent in the sludge conditioning tank 3, reduce the mixing and conditioning time of the sludge conditioning tank 3, and improve the efficiency of sludge treatment.

[0058] Please refer to Figure 1 to Figure 2A vertical sludge press 4 is provided at the output end of the sludge conditioning tank 3. The vertical sludge press 4 can squeeze out the water in the sludge to achieve the purpose of mud-water separation. The vertical sludge press 4 includes a hydraulic station system 4.1 for squeezing the sludge. A distribution system 4.2 for distributing the sludge is provided below the hydraulic station system 4.1. A filter press chamber system 4.3 and a pressing platform 4.4 for storing and squeezing the sludge are provided below the distribution system 4.2. First, the sludge is spread on the flexible filter cloth through the distribution system 4.2, and stacked in the filter press chamber system 4.3 to form a stacked mud cake. The filter press chamber system 4.3 is placed on the pressing platform 4.4. Then, a stepped high-pressure pressure is applied to the stacked mud cake through the hydraulic station system 4.1 to squeeze out the water in the sludge to achieve the purpose of mud-water separation. The entire system is controlled by PLC to achieve full automatic operation.

[0059] Specifically, the vertical sludge presses 4 are arranged in two groups, and the vertical sludge presses 4 are staggered in operation. After one group of vertical sludge presses 4 is completed, in the interval of feeding by the dry sludge conveying system 5, the other group of vertical sludge presses 4 is operated for pressing, so that the pressing efficiency of the sludge can be improved, and the dry sludge conveying system 5 can always convey the pressed sludge;

[0060] The sludge discharge end of the vertical sludge press 4 is equipped with a dry sludge conveying system 5 for conveying the pressed sludge, and the dry sludge conveying system 5 is a scraper conveyor. The output end of the dry sludge conveying system 5 and the input end of the wet sludge silo 2 are both provided with sludge trucks, and the sludge truck located at one end of the wet sludge silo 2 stores the sludge to be pressed, so that the sludge is sent to the wet sludge silo 2 for storage, and the sludge truck arranged at one end of the vertical sludge press 4 is a dry sludge truck, which is used to send the sludge pressed by the vertical sludge press 4 out of the dry sludge truck using the dry sludge conveying system 5, and then send it to a designated location through the dry sludge truck.

[0061] In summary, the working principle of a squeezing device for deep sludge reduction in the embodiment of the utility model is as follows: sludge and a certain amount of reagent are added to the sludge conditioning tank 3 for conditioning, the conditioned sludge is transported to the vertical sludge press 4 for squeezing, and the squeezed sludge is collected and transported out through the dry sludge conveying system 5;

[0062] The agent stored in the conditioning agent storage tank 1 is a special conditioning agent, the raw sludge stored in the wet sludge silo 2 is sludge with a moisture content of 80%, and the sludge with a moisture content of 80% is transported to the sludge conditioning tank 3 by a sludge pump, and the special conditioning agent is transported to the sludge conditioning tank 3 by a special conditioning agent dosing pump, and the dosing ratio of the special conditioning agent is 3%-6%; after the sludge and the special conditioning agent are added, they are mixed and stirred in the sludge conditioning tank 3, and the stirring time is 10-20 minutes;

[0063] Among them, when the sludge is sent into the sludge conditioning tank 3 for conditioning through the sludge feeding pipe body 3.2, the feeding dragon 6.2 is designed to increase the fluidity of the sludge, so that it can quickly flow into the sludge conditioning tank 3 for conditioning, and while the feeding dragon 6.2 is working, the transmission rod body 6.3 is used to move the powder-stirring piece 7.1 to drive the shielding plate body 7.2 to move back and forth, so that part of the conditioning agent in the feeding pipe body 3.3 can be sent into the sludge feeding pipe body 3.2 through the material guide pipe 7.3, and the conditioning agent and the sludge during transportation are mixed in advance, thereby increasing the conditioning efficiency of the sludge, avoiding the problem of uneven conditioning when the sludge and the conditioning agent are directly added to the sludge conditioning tank 3, and maximizing the conditioning efficiency of the sludge by the sludge conditioning tank 3;

[0064] The conditioned sludge is conveyed to the vertical sludge press 4 through a mixed sludge pump for distribution and squeezing. The moisture content of the sludge after squeezing is below 50%. The sludge after squeezing is collected into the receiving port of the dry sludge conveying system 5 through the sludge collecting chute on the vertical sludge press 4. The filtrate after squeezing is collected into the filtrate collecting tank through the filtrate collecting system on the vertical sludge press 4, and then discharged into the sewage treatment system through the pipeline system. When the sludge enters the dry sludge conveying system 5 after squeezing, it is collected into the dry sludge silo or the dry sludge truck for external transportation and disposal.

[0065] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A squeezing device for deep sludge reduction, comprising a conditioning agent storage tank (1) for storing agents and a wet sludge silo (2) for storing sludge, characterized in that: The output ends of the conditioning agent storage tank (1) and the wet sludge silo (2) are both provided with a sludge conditioning tank (3), and the output end of the sludge conditioning tank (3) is provided with a vertical sludge press (4), and the vertical sludge press (4) comprises a hydraulic station system (4.1) for pressing the sludge, a distribution system (4.2) for distributing the sludge is provided below the hydraulic station system (4.1), and a filter press chamber system (4.3) and a pressing platform (4.4) for storing and pressing the sludge are provided below the distribution system (4.2), and a dry sludge conveying system (5) for conveying the pressed sludge is provided at the sludge discharge end of the vertical sludge press (4).

2. The squeezing device for deep sludge reduction according to claim 1 is characterized in that: The output end of the sludge conditioning tank (3) is connected to a sludge discharge pipe (3.1) via a flange seal, while the sludge input end of the sludge conditioning tank (3) is connected to a sludge delivery pipe (3.2), wherein the reagent input end of the sludge conditioning tank (3) is connected to a delivery pipe (3.3).

3. The squeezing device for deep sludge reduction according to claim 2 is characterized in that: A mixing component (6) for increasing the fluidity of sludge is mounted on the surface of the output end of the sludge delivery pipe body (3.2), and a powder stirring component (7) is installed on the surface of the delivery pipe body (3.3).

4. The squeezing device for deep sludge reduction according to claim 3 is characterized in that: The mixing component (6) comprises a feeding dragon (6.2) arranged in the mud feeding pipe body (3.2), and a driving member (6.1) is installed on the shaft end of the feeding dragon (6.2).

5. The squeezing device for deep sludge reduction according to claim 4 is characterized in that: A transmission rod body (6.3) is arranged above the feeding dragon (6.2), wherein the shaft end of the transmission rod body (6.3) and the output end of the driving member (6.1) are both sleeved with a transmission accessory (6.31), and the transmission accessory (6.31) is composed of two pulleys and a belt.

6. The squeezing device for deep sludge reduction according to claim 5, characterized in that: The powder-prying assembly (7) comprises a powder-prying piece (7.1) movably mounted in the inner cavity of the feeding tube (3.3); the surface of the transmission rod (6.3) and the surface of one end of the powder-prying piece (7.1) extending through the outer side of the feeding tube (3.3) are respectively sleeved with toothed fittings (7.11).

7. The squeezing device for deep sludge reduction according to claim 6, characterized in that: The powder stirring assembly (7) further comprises a material guiding tube (7.3) arranged below the surface of the feeding tube body (3.3), and the bottom of the inner cavity of the feeding tube body (3.3) is connected to the material guiding tube (7.3) by providing a material guiding groove cavity (3.23).

8. The squeezing device for deep sludge reduction according to claim 7, characterized in that: One end of the surface of the mud delivery pipe body (3.2) is connected to an expansion cavity shell (3.21), and the end of the expansion cavity shell (3.21) is connected to the bottom of the material guide pipe (7.3) by opening a material inlet trough cavity (3.22).

9. The squeezing device for deep sludge reduction according to claim 8, characterized in that: The inner cavity of the material guiding passage (7.3) is slidably provided with a shielding plate body (7.2), and the inner surface of the material feeding tube body (3.3) and one side of the material guiding groove cavity (3.23) is provided with an assembly groove cavity (3.24).

10. The squeezing device for deep sludge reduction according to claim 9, characterized in that: The shielding plate body (7.2) comprises an elastic member (7.21) located at one end of the inner cavity of the assembly groove cavity (3.24), and the end of the shielding plate body (7.2) is integrally formed with a protrusion.

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