A high-drying and high-pressure belt-type sludge dewatering machine

Abstract

The present invention discloses a high-drying high-pressure belt-type sludge dewatering machine, comprising a flocculation tank, a concentrated primary filter belt device, a skeleton agent automatic feeding device, a modifier feeding device, a mixing device, a mud homogenizing device, and a high-pressure filter belt device; the mixing device comprises a mixing bin, a mixing and stirring mechanism and a modifier spraying assembly arranged in the mixing bin, the sludge sent out of the outlet of the sludge primary filter belt assembly is fed into the sludge input port through a sludge input pipe, and the skeleton agent automatic feeding device inputs the skeleton agent into the mixing bin through the sludge input port. The sludge dewatering machine of the present invention greatly reduces the moisture content of the sludge output, and can achieve full-automatic continuous operation, integrating all the processing processes into one device, greatly reducing the occupied space, and simplifying the operation process.

Description

Technical Field

[0001] The invention relates to a sludge treatment technology, in particular to a belt type sludge dewatering machine. Background Art

[0002] The traditional belt type sludge dewatering machine generally consists of three parts: flocculation, concentration and pressing. The flocculation part flocculates the sludge, then the concentration part concentrates the sludge, and finally the pressing part presses the sludge. After the traditional belt type sludge dewatering machine treats the sludge, the moisture content of the mud cake is still high. The traditional methods of improving the filter cloth, increasing the tension of the filter cloth, and increasing the residence time of the sludge pressing are difficult to further reduce the moisture content of the sludge. Summary of the invention

[0003] In view of the above technical problems, the purpose of the present invention is to provide a high-drying and high-pressure belt-type sludge dewatering machine to further reduce the moisture content of the sludge and make the moisture content of the sludge reach 60%.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A high-drying high-pressure belt-type sludge dewatering machine, comprising a flocculation tank, a concentrated primary filter belt device, a skeleton agent automatic feeding device, a modifier feeding device, a mixing device, a sludge homogenizing device, and a high-pressure filter belt device; the flocculation tank performs flocculation treatment on the sludge;

[0006] The concentrated primary pressure filter belt device is provided with a sludge concentrated filter belt assembly and a sludge primary pressing filter belt assembly, wherein the sludge concentrated filter belt assembly is used to concentrate the sludge, and the sludge primary pressing filter belt assembly is used to perform primary pressing on the concentrated sludge;

[0007] The mixing device comprises a mixing bin, a mixing and stirring mechanism arranged in the mixing bin, and a modifier spraying assembly. The mixing bin is provided with a sludge input port and a mixing outlet. The sludge input port is used to input sludge into the mixing bin. The sludge input port is arranged below the outlet of the sludge preliminary pressing filter belt assembly and is connected to a sludge input pipe. The sludge sent out from the outlet of the sludge preliminary pressing filter belt assembly is sent into the sludge input port through the sludge input pipe.

[0008] The modifier spraying assembly is connected to the modifier feeding device, the modifier feeding device supplies the modifier to the modifier spraying assembly, the modifier spraying assembly sprays the modifier into the mixing bin to mix with the sludge, and the amount of the modifier is 1-10% of the mass of the sludge;

[0009] The automatic skeleton agent feeding device inputs the skeleton agent into the mixing bin through the sludge input port, and the amount of the skeleton agent is 1-7% of the sludge mass;

[0010] The mud leveling device evenly distributes the mixed sludge onto the pressing filter belt of the high-pressure pressing filter belt device. The mud leveling device is provided with a mud leveling plate for leveling the sludge. The high-pressure pressing filter belt device performs high-pressure pressing on the sludge.

[0011] Preferably, the sludge thickening filter belt assembly is provided with an upper thickening filter belt and a lower thickening filter belt for clamping and cooperating to concentrate the sludge, and the sludge preliminary pressing filter belt assembly is provided with an upper preliminary pressing filter belt and a lower preliminary pressing filter belt for clamping and cooperating to press the sludge, the tensioning force of the upper preliminary pressing filter belt and the lower preliminary pressing filter belt is greater than the tensioning force of the upper thickening filter belt and the lower thickening filter belt, and the mesh number of the upper preliminary pressing filter belt and the lower preliminary pressing filter belt is greater than the mesh number of the upper thickening filter belt and the lower thickening filter belt.

[0012] Preferably, the high-pressure filter press belt device is provided with an upper high-pressure filter press belt and a lower high-pressure filter press belt for clamping and cooperating to press the sludge, and the upper concentrating filter belt, the lower concentrating filter belt, the upper preliminary pressing filter belt, the lower preliminary pressing filter belt, the upper high-pressure filter press belt, and the lower high-pressure filter press belt are all connected with pressing rollers, and the arrangement density of the pressing rollers in the high-pressure filter press belt device is greater than the arrangement density of the pressing rollers in the concentrating preliminary pressing filter belt device.

[0013] Preferably, the concentrated primary filter belt device is arranged on the upper layer of the dewatering machine frame, the mixing device is arranged on the middle layer of the dewatering machine frame, and the high-pressure pressing filter belt device is arranged on the lower layer of the dewatering machine frame, and the sludge conveying direction of the concentrated primary filter belt device and the high-pressure pressing filter belt device is the same, which is opposite to the sludge conveying direction in the mixing device.

[0014] Preferably, the mixing bin is provided with a cylindrical shell, the mixing and stirring mechanism includes a spiral stirring shaft arranged in the shell and a mixing and stirring motor driving the spiral stirring shaft to rotate, the spiral stirring shaft is provided with a spiral blade extending along the axial direction, the sludge input port is arranged on the upper side of one end of the shell, and the mixing outlet is arranged on the lower side of the other end of the shell; when the spiral stirring shaft rotates, the sludge is pushed to be transported from the sludge input port to the mixing outlet, the sludge is broken up during the transportation process, and the modifier and skeleton agent are mixed with the sludge.

[0015] Preferably, the automatic skeleton agent feeding device comprises a skeleton agent feeding bin storing the skeleton agent, a screw shaft feeding mechanism is provided at the bottom of the skeleton agent feeding bin, and an output port of the screw shaft feeding mechanism is provided above the sludge input port.

[0016] Preferably, the automatic skeleton agent feeding device further comprises a skeleton agent storage tank for storing the skeleton agent, a skeleton agent delivery pipe for delivering the skeleton agent to the skeleton agent feeding bin, and a skeleton agent delivery pump connected to the skeleton agent delivery pipe.

[0017] Preferably, the modifier feeding device comprises a modifier storage tank for storing the modifier, a modifier delivery pipe for delivering the modifier to the modifier spraying assembly, and a modifier delivery pump connected to the modifier delivery pipe.

[0018] Preferably, the modifier storage tank is provided with a stirrer, and the modifier storage tank is connected with a feed pipe and a discharge pipe.

[0019] Preferably, the sludge distribution plate has an angle with the sludge conveying direction.

[0020] After the present invention adopts the above technical solution, it has the following beneficial effects:

[0021] Based on the traditional belt dewatering machine, an improvement is made by adding a sludge preliminary pressing filter belt assembly. After the sludge is concentrated by the sludge thickening filter belt assembly, the sludge preliminary pressing filter belt assembly performs preliminary pressing on the concentrated sludge to remove free water and interstitial water that are easy to remove.

[0022] Then, the sludge after the initial pressing enters the mixing system, where the modifier is sprayed on the sludge in the mixing bin of the mixing system, and the skeleton agent can also be added to mix the modifier and the skeleton agent with the sludge. Among them, the modifier can destroy the protein-based cell wall, release the bound water and adsorbed water in the sludge, greatly reduce the viscosity of the sludge, and improve the sludge dehydration effect. The skeleton agent can change the characteristics of the sludge, enhance the dehydration of the sludge, sterilize and promote the hydrolysis of organic matter, thereby reducing the difficulty of water treatment. Therefore, it is convenient to press the sludge under high pressure in the high-pressure filter belt device to further reduce the moisture content of the sludge.

[0023] The mixed sludge is evenly distributed on the pressing filter belt of the high-pressure pressing filter belt device by the mud leveling device. The high-pressure pressing area has more pressing rollers than the traditional belt dewatering machine. The pressing rollers are arranged more densely and have a larger wrap angle. The tension and shear force of the filter cloth are much greater than those in the pressing area of ​​the traditional belt dewatering machine, which makes the moisture content of the sludge lower.

[0024] Therefore, the moisture content of the sludge discharged from the high-drying and high-pressure belt-type sludge dewatering machine of the present invention can reach 60%, and the sludge volume is reduced by one half.

[0025] Compared with the plate and frame filter press, the high-drying high-pressure belt-type sludge dewatering machine of the present invention can achieve full-automatic continuous operation, greatly reducing manual operation time and having higher efficiency.

[0026] The high-drying and high-pressure belt-type sludge dewatering machine of the present invention integrates all treatment processes into one device, greatly reduces the occupied space and simplifies the operation process.

[0027] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0029] Figure 1 It is a three-dimensional structural schematic diagram of the sludge dewatering machine of the present invention;

[0030] Figure 2 It is a front view of the sludge dewatering machine of the present invention;

[0031] Figure 3 It is a side view of the sludge dewatering machine of the present invention;

[0032] Figure 4 It is a top view of the sludge dewatering machine of the present invention;

[0033] In the figure: a concentrated primary pressure filter belt device 1, a sludge concentrated filter belt assembly 11, a sludge preliminary pressing filter belt assembly 12, a mixing system 2, a mixing device 21, a cylindrical shell 211, a spiral stirring shaft 212, a mixing and stirring motor 213, an automatic skeleton agent feeding device 22, a skeleton agent feeding bin 221, a spiral shaft feeding mechanism 222, a skeleton agent storage tank 223, a skeleton agent delivery pipe 224, a skeleton agent delivery pump 225, a modifier feeding device 23, a modifier storage tank 231, a modifier delivery pipe 232, a modifier delivery pump 233, a high-pressure pressing filter belt device 3, a flocculation tank 4, and a sludge homogenizing device 5. DETAILED DESCRIPTION

[0034] The technical solutions of the embodiments of the present invention are explained and described below in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0035] Those skilled in the art will appreciate that, in the absence of conflict, the features in the following embodiments and implementations may be combined with each other.

[0036] like Figures 1 to 4 As shown, a high-drying high-pressure belt-type sludge dewatering machine includes a flocculation tank 4, a concentrated primary filter belt device 1, a mixing system 2, a sludge homogenizing device 5, and a high-pressure filter belt device 3. The mixing system 2 is provided with a skeleton agent automatic feeding device 22, a modifier feeding device 23, and a mixing device 21.

[0037] The flocculation tank 4 performs flocculation treatment on the sludge, adds flocculants, and mixes and stirs the flocculants with the sludge. The specific structure may refer to the prior art.

[0038] Referring to the structure of a traditional belt dewatering machine, the concentrating primary pressure filter belt device 1 is provided with a sludge concentrating filter belt assembly 11 and a sludge primary pressing filter belt assembly 12. The sludge concentrating filter belt assembly 11 concentrates the sludge, and the sludge primary pressing filter belt assembly 12 performs primary pressing on the concentrated sludge.

[0039] The concentrated primary filter belt device 1 is equivalent to a traditional sludge belt dewatering machine. The sludge concentrated filter belt assembly is provided with an upper concentrated filter belt and a lower concentrated filter belt for clamping and cooperating with concentrated sludge, and the sludge preliminary pressing filter belt assembly is provided with an upper preliminary pressing filter belt and a lower preliminary pressing filter belt for clamping and cooperating with pressing sludge, the tension of the upper preliminary pressing filter belt and the lower preliminary pressing filter belt is greater than the tension of the upper concentrated filter belt and the lower concentrated filter belt, and the mesh number of the upper preliminary pressing filter belt and the lower preliminary pressing filter belt is greater than the mesh number of the upper concentrated filter belt and the lower concentrated filter belt, and the arrangement density of the pressing rollers in the sludge preliminary pressing filter belt assembly 12 is greater than the arrangement density of the pressing rollers in the sludge concentrated filter belt assembly 11.

[0040] In addition, unlike the traditional concentration filter belt, the lower concentration filter belt must take into account both the front-end concentration and the rear-end initial pressure, so the selected filter cloth mesh number is a compromise between the conventional concentration filter cloth and the pressing filter belt, and the tensile strength must be higher than that of the ordinary concentration filter belt.

[0041] The mixing device 21 includes a mixing bin, a mixing and stirring mechanism arranged in the mixing bin, and a modifier spraying assembly. The mixing bin is provided with a sludge input port and a mixing outlet. The sludge input port is used to input sludge into the mixing bin. The sludge input port is arranged below the outlet of the sludge preliminary pressing filter belt assembly 12, and is connected to a sludge input pipe. The sludge sent out of the outlet of the sludge preliminary pressing filter belt assembly is sent into the sludge input port through the sludge input pipe. In this way, the sludge sent out of the outlet of the sludge preliminary pressing filter belt assembly enters the sludge input pipe, and the sludge is sent into the sludge input port along the sludge input pipe by its own gravity without the need for external force.

[0042] The modifier spray assembly is connected to the modifier feeding device 23, and the modifier feeding device supplies the modifier to the modifier spray assembly, and the modifier spray assembly sprays the modifier into the mixing bin to mix with the sludge. The modifier can adopt the existing technology, generally using a certain proportion of iron salts, magnesium salts, polyferric sulfate solutions, etc. The amount of modifier used is generally 1-10% of the mass of the sludge (based on the sludge entering the concentrated primary filter belt device), preferably 3-6%, and is specifically adjusted according to different sludges and different water contents. Its function is to destroy the protein-based cell wall, release the bound water and adsorbed water in the sludge, the intracellular water, overcome the sludge specific resistance, greatly reduce the sludge viscosity, and improve the sludge dehydration effect.

[0043] The skeleton agent automatic feeding device 22 inputs the skeleton agent into the mixing bin through the sludge input port. That is, the skeleton agent is initially mixed with the sludge and then sent into the mixing bin together, and then evenly mixed with the sludge in the mixing bin. The skeleton agent can adopt the existing technology, generally calcium hydroxide, which can change the characteristics of the sludge, enhance the dehydration of the sludge, sterilize and promote the hydrolysis of organic matter, thereby reducing the difficulty of water treatment. The amount of skeleton agent used is generally 1-5% of the mass of the sludge (based on the sludge entering the concentrated primary filter belt device), preferably 2-4%, which is specifically adjusted according to different sludges and different water contents.

[0044] The sludge leveling device 5 evenly distributes the mixed sludge onto the filter belt of the high-pressure filter belt press device, and the high-pressure filter belt press device 3 performs high-pressure pressing on the sludge. The sludge leveling device is arranged at the entrance of the high-pressure filter belt press device, and is provided with a sludge leveling plate for leveling the sludge. The sludge leveling plate has an angle with the sludge conveying direction, and the height of the sludge leveling plate is adjustable, so that the sludge is leveled before entering the deep pressing. For details, please refer to the relevant patents previously applied by the applicant.

[0045] In order to achieve uniform mixing, the mixing device of the present invention adopts the following structure: the mixing bin is provided with a cylindrical shell 211, the mixing and stirring mechanism includes a spiral stirring shaft 212 arranged in the shell and a mixing and stirring motor 213 driving the spiral stirring shaft to rotate, and the spiral stirring shaft is provided with a spiral blade extending along the axial direction. The cylindrical shell 211 is arranged horizontally, or the axial direction has a certain angle with the horizontal plane, the sludge input port is arranged on the upper side of one end of the shell, and the mixing outlet is arranged on the lower side of the other end of the shell. When the spiral stirring shaft rotates, the sludge is pushed to be transported from the sludge input port to the mixing outlet, the sludge is broken up during the transportation process, and the modifier and skeleton agent are mixed with the sludge.

[0046] Referring to the structure of the traditional belt dewatering machine, the high-pressure filter belt device 3 is provided with an upper high-pressure filter belt and a lower high-pressure filter belt for clamping and squeezing the sludge. The upper concentration filter belt, the lower concentration filter belt, the upper preliminary filter belt, the lower preliminary filter belt, the upper high-pressure filter belt, and the lower high-pressure filter belt are all connected with pressing rollers, and the arrangement density of the pressing rollers in the high-pressure filter belt device is greater than the arrangement density of the pressing rollers in the concentration preliminary filter belt device. The high-pressure filter belt device has more pressing rollers than the traditional belt dewatering machine, and the pressing rollers are arranged more densely and have a larger wrap angle. The tension and shear force are much greater than the pressing area of ​​the traditional belt dewatering machine, so that the moisture content of the mud is lower. In addition, the sludge initial pressing filter belt assembly adopts the traditional belt dewatering method, with small wrap angle and low tension to remove free water and interstitial water that are easy to remove. The high-pressure pressing filter belt device adopts air pressure tension with greater tension force than the traditional belt dewatering machine, and uses filter cloth with larger mesh size and higher strength, and adopts more pressing rollers and large wrap angle to increase the sludge pressing residence time.

[0047] In this embodiment, the concentrated primary filter belt device 1 is arranged on the upper layer of the dewatering machine frame, the mixing device 21 is arranged on the middle layer of the dewatering machine frame, and the high-pressure pressing filter belt device 3 is arranged on the lower layer of the dewatering machine frame, and the sludge conveying direction of the concentrated primary filter belt device and the high-pressure pressing filter belt device is the same, which is opposite to the sludge conveying direction in the mixing device. The top concentrated primary filter belt device 1 is equivalent to a traditional sludge belt dewatering machine. After the initial pressure, the addition of the modifier and calcium hydroxide is premised on making the sludge lose fluidity, and the effect is better when a large amount of free water is removed. In this way, the amount of reagent added is less and the loss rate of the reagent is lower. The sludge conveying direction of the concentrated primary filter belt device and the high-pressure pressing filter belt device is opposite to the sludge conveying direction in the mixing device, which can make the overall integration and installation space more compact, and can be placed in the middle layer without being placed outside the equipment.

[0048] In this embodiment, the skeleton agent automatic feeding device 22 includes a skeleton agent feeding bin 221 storing skeleton agent, a screw shaft feeding mechanism 222 is provided at the bottom of the skeleton agent feeding bin, and the output port of the screw shaft feeding mechanism is arranged above the sludge input port. The skeleton agent automatic feeding device also includes a skeleton agent storage tank 223 for storing skeleton agent, a skeleton agent delivery pipe 224 for delivering skeleton agent to the skeleton agent feeding bin, and a skeleton agent delivery pump 225 connected to the skeleton agent delivery pipe.

[0049] In this embodiment, the modifier feeding device 23 includes a modifier storage tank 231 for storing the modifier, a modifier delivery pipe 232 for delivering the modifier to the modifier spraying assembly, and a modifier delivery pump 233 connected to the modifier delivery pipe. The modifier storage tank is provided with a stirrer, and the modifier storage tank is connected to a feed pipe and a discharge pipe.

[0050] In combination with the above technical solutions, the present invention takes into account all aspects of sludge conditioning, modification, mixing, crushing, tensioning pressure, and sludge pressing residence time, greatly increasing the sludge dewatering efficiency. The sludge moisture content can reach 60%, and the sludge volume is reduced by half compared with the traditional belt sludge dewatering machine.

[0051] Compared with the plate and frame filter press, the high-drying high-pressure belt-type sludge dewatering machine of the present invention can achieve full-automatic continuous operation, greatly reducing manual operation time and having higher efficiency.

[0052] The high-drying and high-pressure belt-type sludge dewatering machine of the present invention integrates all treatment processes into one device, greatly reduces the occupied space and simplifies the operation process.

[0053] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. A high-drying and high-pressure belt-type sludge dewatering machine, characterized in that: It includes flocculation tank, concentrated primary filter belt device, skeleton agent automatic feeding device, modifier feeding device, mixing device, mud homogenizing device, high pressure filter belt device; The flocculation tank performs flocculation treatment on the sludge; The concentrated primary pressure filter belt device is provided with a sludge concentrated filter belt assembly and a sludge primary pressing filter belt assembly, wherein the sludge concentrated filter belt assembly is used to concentrate the sludge, and the sludge primary pressing filter belt assembly is used to perform primary pressing on the concentrated sludge; The mixing device comprises a mixing bin, a mixing and stirring mechanism arranged in the mixing bin, and a modifier spraying assembly. The mixing bin is provided with a sludge input port and a mixing outlet. The sludge input port is used to input sludge into the mixing bin. The sludge input port is arranged below the outlet of the sludge preliminary pressing filter belt assembly and is connected to a sludge input pipe. The sludge sent out from the outlet of the sludge preliminary pressing filter belt assembly is sent into the sludge input port through the sludge input pipe. The modifier spraying assembly is connected to the modifier feeding device, and the modifier feeding device supplies the modifier to the modifier spraying assembly. The modifier spraying assembly sprays the modifier into the mixing bin to mix with the sludge, and the amount of the modifier is 1-10% of the mass of the sludge; The automatic skeleton agent feeding device inputs the skeleton agent into the mixing bin through the sludge input port, and the amount of the skeleton agent is 1-5% of the sludge mass; The mixing bin is provided with a cylindrical shell, the mixing and stirring mechanism includes a spiral stirring shaft arranged in the shell and a mixing and stirring motor driving the spiral stirring shaft to rotate, the spiral stirring shaft is provided with a spiral blade extending in the axial direction, the sludge input port is arranged on the upper side of one end of the shell, and the mixing outlet is arranged on the lower side of the other end of the shell; when the spiral stirring shaft rotates, the sludge is pushed to be transported from the sludge input port to the mixing outlet, the sludge is broken up during the transportation process, and the modifier and the skeleton agent are mixed with the sludge at the same time, the skeleton agent automatic feeding device includes a skeleton agent feeding bin storing the skeleton agent, a spiral shaft feeding mechanism is provided at the bottom of the skeleton agent feeding bin, and the output port of the spiral shaft feeding mechanism is arranged above the sludge input port; The mud leveling device evenly distributes the mixed sludge onto the filter belt of the high-pressure filter belt device. The mud leveling device is provided with a mud leveling plate for leveling the sludge. The high-pressure filter belt device performs high-pressure pressing on the sludge. The concentrated primary filter belt device is arranged on the upper layer of the dewatering machine frame, the mixing device is arranged on the middle layer of the dewatering machine frame, and the high-pressure filter belt device is arranged on the lower layer of the dewatering machine frame. The sludge conveying direction of the concentrated primary filter belt device and the high-pressure filter belt device is the same, which is opposite to the sludge conveying direction in the mixing device.

2. A high-drying and high-pressure belt-type sludge dewatering machine according to claim 1, characterized in that: The sludge thickening filter belt assembly is provided with an upper thickening filter belt and a lower thickening filter belt for clamping and cooperating with the thickening sludge, and the sludge preliminary pressing filter belt assembly is provided with an upper preliminary pressing filter belt and a lower preliminary pressing filter belt for clamping and cooperating with the pressing sludge, the tensioning force of the upper preliminary pressing filter belt and the lower preliminary pressing filter belt is greater than the tensioning force of the upper thickening filter belt and the lower thickening filter belt, and the mesh number of the upper preliminary pressing filter belt and the lower preliminary pressing filter belt is greater than the mesh number of the upper thickening filter belt and the lower thickening filter belt.

3. A high-drying and high-pressure belt-type sludge dewatering machine according to claim 2, characterized in that: The high-pressure filter belt device is provided with an upper high-pressure filter belt and a lower high-pressure filter belt for clamping and cooperating to squeeze the sludge. The upper concentrating filter belt, the lower concentrating filter belt, the upper preliminary filter belt, the lower preliminary filter belt, the upper high-pressure filter belt and the lower high-pressure filter belt are all connected with pressing rollers, and the arrangement density of the pressing rollers in the high-pressure filter belt device is greater than the arrangement density of the pressing rollers in the concentrating preliminary filter belt device.

4. A high-drying and high-pressure belt-type sludge dewatering machine according to claim 1, characterized in that: The automatic skeleton agent feeding device also includes a skeleton agent storage tank for storing the skeleton agent, a skeleton agent delivery pipe for delivering the skeleton agent to the skeleton agent feeding bin, and a skeleton agent delivery pump connected to the skeleton agent delivery pipe.

5. The high-drying and high-pressure belt-type sludge dewatering machine according to claim 1, characterized in that: The modifier feeding device comprises a modifier storage tank for storing the modifier, a modifier delivery pipe for delivering the modifier to the modifier spraying assembly, and a modifier delivery pump connected to the modifier delivery pipe.

6. A high-drying and high-pressure belt-type sludge dewatering machine according to claim 5, characterized in that: The modifier storage tank is provided with a stirrer, and the modifier storage tank is connected with a feed pipe and a discharge pipe.

7. The high-drying and high-pressure belt-type sludge dewatering machine according to claim 1, characterized in that: The sludge distribution plate has an angle with the sludge conveying direction.

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