CN115319890B

CN115319890B - Process and equipment for preparing baking-free bricks by using river sludge

Info

Publication number: CN115319890B
Application number: CN202210907595.3A
Authority: CN
Inventors: 冯俊杰; 陈霖
Original assignee: Hangzhou Jieying Environmental Protection Technology Co ltd
Current assignee: Hangzhou Jieying Environmental Protection Technology Co ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2023-09-08
Anticipated expiration: 2042-07-29
Also published as: CN115319890A

Abstract

The application discloses a process and equipment for preparing baking-free bricks by using river sludge, which relate to the field of engineering building baking-free bricks, and are used for dewatering sludge dug from a river by an earth dehydrator and collecting sewage formed after dewatering the sludge; a reaction device is arranged to treat sewage; preparing baking-free brick raw materials, and doping 15-50% of sludge; adding the treated sewage into ingredients to form a mixed material; the mixed materials are pressed and formed by a brick press, and are aged at room temperature to obtain a baking-free brick primary blank; and (5) placing the primary blank into a curing pool for curing. The application has the effect of reducing the possibility of secondary pollution of sewage after sludge dehydration to the environment.

Description

Process and equipment for preparing baking-free bricks by using river sludge

Technical Field

The application relates to the field of baking-free bricks for engineering buildings, in particular to a process and equipment for preparing baking-free bricks by using river sludge.

Background

The baking-free brick is a novel wall material manufactured by taking fly ash, coal cinder, coal gangue, tailing slag, chemical slag or natural sand, sea mud and the like (one or more of the raw materials) as main raw materials and not calcining at high temperature.

In the related technology, river sludge is used as one of the additive materials or is used as a main raw material in the baking-free bricks, the sludge is dehydrated through a soil dehydrator to ensure that the water content of the sludge is about 20% -25%, and the main process for preparing the baking-free bricks is that 15% -50% of the sludge is added into the raw material for preparing the baking-free bricks, so that the performance of the baking-free bricks is improved; and adding water, preparing the raw materials and the sludge into a mixed material, and forming by a brick press.

In carrying out the present application, the inventors have found that there is at least a problem in this technique in that the sludge needs to be partially dewatered before the raw materials are blended, and that the sewage separated from the sludge may have harmful impurities such as heavy metals, and the random discharge will cause environmental pollution.

Disclosure of Invention

In order to reduce the possibility of secondary pollution of sewage after sludge dehydration to the environment, the application provides a process and equipment for preparing baking-free bricks by using river sludge.

The application provides a process and equipment for preparing baking-free bricks by using river sludge, which adopts the following technical scheme:

a process and a device for preparing baking-free bricks by using river sludge,

s1, dewatering sludge dug from a river channel through an earth dewatering machine, and collecting sewage formed after dewatering the sludge;

s2, a reaction device is arranged to treat the sewage in the S1;

s3: preparing baking-free brick raw materials, and doping 15-50% of sludge in S1;

s4: adding the sewage treated in the step S2 into the ingredients of the step S3 to form a mixed material;

s5, pressing and forming the mixed materials by a brick press, and ageing at room temperature to obtain a baking-free brick primary blank;

s6, placing the primary blank into a curing pool for curing.

By adopting the technical scheme, after the sludge is dehydrated by a worker, forming two parts of sludge with low water content and sewage, adding the dehydrated sludge into the raw materials for preparing the baking-free bricks, and adding the treated sewage for blending, so that the mixing is realized, and the baking-free bricks are formed by pressing the mixing; because the activated SiO2 and the AL2O3 are contained in the sludge, the sludge can be excited to generate gel products in an alkaline environment, and by adding sewage, harmful impurities can be solidified in the baking-free bricks, so that secondary pollution to the environment is reduced.

Optionally, one end of the reaction device in the step S2 is communicated with a sewage outlet of the soil dehydrator in the step S1, and the other end of the reaction device is arranged on the brick press in the step S5 and is used for adding water to ingredients; the reaction device comprises a water storage tank, and an adding component which is arranged on the water storage tank and is used for treating sewage.

By adopting the technical scheme, the staff firstly realizes the dehydration treatment of the sludge through the soil dehydrator, the sewage discharged in the dehydration treatment process enters the water storage tank, and organic matters and the like in the sewage are removed as much as possible through the further treatment of the sewage in the water storage tank, so that the possibility of insufficient strength of the baking-free bricks pressed in the later stage is reduced; and then conveying the treated sewage to a brick press, mixing the raw materials for preparing the baking-free bricks with the sludge, mixing materials, and pressing and forming to obtain the baking-free bricks.

Optionally, add the subassembly including fixing at the storage water tank lateral wall and be used for adding a plurality of interpolation pipes of chemical agent, add the subassembly and still including setting up in the storage water tank inside and the release pipe that the intercommunication corresponds interpolation pipe, offered a plurality of overflows that are used for discharging chemical agent on the release pipe.

By adopting the technical scheme, a worker can add the chemical agent into the water storage tank through the adding pipe and overflows through the overflow outlet on the release pipe; the chemical agent is uniformly distributed in the water storage tank through the overflow outlet, so that the chemical agent can fully react with sewage.

Optionally, a bracket net is arranged on the inner wall of the water storage tank and is positioned below the release pipe; each the top of release pipe all is provided with the bending plate that is used for reducing the overflow mouth and is blockked up the possibility, and is fixed with a plurality of branches that are located each release pipe both sides on the support net, and the branch is connected in the bending plate, and the overflow mouth all is towards bending plate one side.

By adopting the technical scheme, a small amount of sludge, fine sand and the like possibly still exist in the sewage, the possibility of blockage caused by the impurity entering the overflow port can be reduced through the bent plate, and meanwhile, the chemical agent flows out through the gap between the release pipe and the bent plate.

Optionally, the water storage tank is rotationally connected with a stirring rod and a stirring sheet fixed on the stirring rod; the stirring rod is vertically arranged, the stirring sheet contacts the inner bottom wall of the water storage tank, a cylinder for collecting impurities is fixed on the bottom plate of the water storage tank, and the cylinder is communicated with the inside of the water storage tank; the connecting line of one point of the stirring sheet, which is in contact with the stirring rod, and the center point of the stirring rod in the length direction of the stirring sheet forms an acute angle under orthographic projection; the cylinder body is provided with a rotary valve for opening the cylinder body to take out impurities.

By adopting the technical scheme, the stirring piece can also clean impurities in the process of slowly flowing the liquid in the water storage tank; the stirring rod drives the stirring blade to rotate, and impurities can be continuously driven to enter the cylinder along the inclined surface of the stirring blade in the rotating process because the stirring blade is obliquely arranged; when the cylinder is filled, the valve can be rotated to open the cylinder, so that impurities can be discharged.

Optionally, the bending plates are inverted V-shaped and cover the release tube, and the bending plates are arranged at intervals; and a connecting component for reducing the possibility of impurities entering the overflow port is arranged between the stirring rod and the bending plate.

Through adopting above-mentioned technical scheme, when the impurity that is located the bent plate top drops the bent plate lateral wall, will be because the inclined plane of bent plate and the landing downwards, and when the stirring piece during operation, can have the impurity condition that floats again, consequently set up coupling assembling.

Optionally, the release pipe is obliquely arranged upwards or downwards from one end to the other end along the length direction of the release pipe, the oblique directions of the adding pipes positioned at the two sides of the stirring rod are opposite, and the vertical planes of the axes of the release pipes are mutually parallel; the length direction of the bending plate is parallel to the length direction of the release pipe positioned on the same side of the stirring rod, and the bending plate is rotationally connected with the support strip so that the bending plate can be far away from the release pipe or clung to the release pipe.

Through adopting above-mentioned technical scheme, the stirring rod rotates, drives coupling assembling's motion, coupling assembling's motion will drive the motion of bending plate, when the bending plate contact in the release pipe, the possibility that impurity got into the overflow mouth will reduce greatly to this improves the difficult possibility of blockking up of overflow mouth.

Optionally, the connecting component comprises a sleeve sleeved on the stirring rod, a sealing ring is arranged between the inner wall of the sleeve and the stirring rod, the connecting component further comprises a connecting rod which is arranged on the sleeve and connected with a corresponding bending plate, one end of the connecting rod is hinged to the outer side wall of the sleeve, the other end of the connecting rod is hinged to the bending plate, and the connecting rod is telescopic; the side wall of the stirring rod is fixed with two limiting rings which are abutted against the end face of the sleeve.

Through adopting above-mentioned technical scheme, puddler pivoted in-process, the stirring piece can move, and impurity can float, and the sleeve also can move simultaneously, and the sleeve passes through the connecting rod and drives the bending plate motion for bending plate contact is in the release pipe lateral wall, because set up the sealing washer between sleeve and the puddler, when bending plate removes extreme position, will take place sliding friction between sleeve and the puddler.

Optionally, the connecting rod includes first connecting rod and the second connecting rod of cover on first connecting rod, and first connecting rod slides along second connecting rod length direction.

Through adopting above-mentioned technical scheme, through the in-process of connecting rod drive bending plate motion, the length of connecting rod needs to be adjustable, through the second connecting rod on head rod and the cover locating head rod realization.

Optionally, the bracket net is provided with a spring for accelerating the speed of the bending plate away from the release pipe, one end of the spring is fixed on the bracket net, and the other end of the spring is arranged on the bending plate; the support strip is provided with a first limiting block which is used for being pulled to the bending plate in cooperation with the spring and has the largest distance with the release pipe, and a second limiting block which is arranged on the bending plate and is used for being abutted against the first limiting block.

Through adopting above-mentioned technical scheme, when the stirring rod stopped rotating, the spring pulled bending plate realized that the bending plate kept away from the release pipe, and moved the mutual butt of first stopper and second stopper, realized that the spring pulled bending plate turned angle's spacing.

In summary, the present application includes at least one of the following beneficial technical effects:

and adding the sewage after the sludge is dehydrated into a mixed material, and solidifying heavy metals in the sewage into baking-free bricks, so that secondary pollution to the environment is reduced.

The reaction device evenly releases chemical agents in the water storage tank through the release pipe, the stirring rod can drive water to flow in the process of cleaning impurities, the chemical agents and sewage fully react, the stirring rod can reduce the impurity entering the overflow outlet in the rotating process, and the possibility of blocking the overflow outlet is reduced.

Drawings

FIG. 1 is a process flow diagram of an embodiment of the present application.

FIG. 2 is a general structural view of the reaction apparatus.

FIG. 3 shows the internal structure of the reaction apparatus.

Fig. 4 is a schematic view of the structure in which the overflow is located on the discharge tube.

Fig. 5 is a schematic structural view of the connection assembly.

Fig. 6 is a schematic view of the structure of the spring connected to the hinge strip.

Fig. 7 is a schematic structural view of the sealing ring connected to the stirring rod.

Reference numerals illustrate:

1. a reaction device; 2. a water storage tank; 3. adding components; 4. an addition tube; 5. a release tube; 6. an overflow port; 8. a stent mesh; 9. a bending plate; 10. a supporting strip; 11. stirring rod; 12. stirring sheets; 13. a cylinder; 14. rotating the valve; 15. a connection assembly; 16. a sleeve; 17. a seal ring; 18. a confinement ring; 19. a connecting rod; 20. a first link; 21. a second link; 22. a spring; 23. a first limiting block; 24. a second limiting block; 25. a first valve; 26. a second valve; 27. a hinge strip; 28. and a vent hole.

Detailed Description

The application is described in further detail below with reference to fig. 1-7.

The embodiment of the application discloses a process and equipment for preparing baking-free bricks by using river sludge. Referring to fig. 1 and 2, the reactor comprises a reactor 1, wherein the reactor 1 comprises a water storage tank 2, the water storage tank 2 is connected with a sewage outlet of an earth dehydrator through one end of a water pipe, and the water storage tank 2 is mounted on a brick press through the other water pipe; after the mud is dehydrated by the mud dehydrator, adding the mud containing 20% -25% of water into a brick press, and adding raw materials required by baking-free bricks into the brick press, so that the raw materials and the mud form ingredients, wherein the mud accounts for about 15% -50% of the ingredients; then adding the sewage passing through the reaction device 1 into a brick press to enable ingredients to become mixed materials, pressing the mixed materials by the brick press to form baking-free bricks, ageing the baking-free bricks at room temperature to obtain baking-free brick primary blanks, and finally placing the baking-free brick primary blanks into a curing pool for curing.

In the mode, sewage after passing through the soil dehydrator enters the mixed material, and harmful substances in the sewage are solidified in the baking-free bricks by pressing of the brick press, so that secondary pollution of the sewage to the environment is reduced.

Referring to fig. 3 and 4, the reaction apparatus 1 further includes an adding unit 3 for adding a chemical agent into the water storage tank 2; the adding component 3 comprises two adding pipes 4 welded on the outer side wall of the water storage tank 2 and two releasing pipes 5 arranged inside the water storage tank 2, and the releasing pipes 5 are connected with the corresponding adding pipes 4; when staff adds chemical agents into the water storage tank 2 through the adding pipe 4, the chemical agents can enter the releasing pipe 5; the lateral wall of release pipe 5 has seted up a plurality of overflows 6, and the even interval setting of overflow 6 along the length direction of release pipe 5, and chemical agent will flow from overflow 6, arranges inside storage water tank 2 through release pipe 5 for the sewage in chemical agent and the storage water tank 2 carries out abundant reaction, and its chemical agent's main objective is in order to adjust sewage pH value, gets rid of the organic matter in the sewage, and disinfects the bacterium etc..

Referring to fig. 3 and 4, a bracket net 8 is welded on the inner wall of the water storage tank 2, the bracket net 8 is horizontally arranged and positioned below the release pipe 5, and the release pipe 5 is welded on the bracket net 8, so that the release pipe 5 is supported by the bracket net 8; a bending plate 9 for reducing the blocking possibility of the spillway 6 is arranged above the release pipe 5, the bending plate 9 is covered above the release pipe 5, and the spillway 6 is opened towards one side of the bending plate 9; the upper surface welding of support net 8 has a plurality of branch strips 10 that are used for supporting bending plate 9, and branch strip 10 distributes in the both sides of each release pipe 5, and branch strip 10 is vertical setting and branch strip 10 is connected in bending plate 9.

Referring to fig. 3 and 4, since the sewage entering the water storage tank 2 itself contains fine silt and the like, the possibility of clogging the overflow outlet 6 with impurities can be reduced by the bent plate 9; the bent plate 9 is in an inverted V shape, so that impurities above the bent plate 9 fall down along the inclined surface of the bent plate 9 after falling onto the bent plate 9 and are not accumulated on the bent plate 9 any more; and the chemical flowing out from the overflow 6 will flow out from between the release tube 5 and the bending plate 9, so that the release of the chemical is more uniform.

Referring to fig. 3 and 4, a stirring rod 11 is rotatably connected to the water tank 2, the stirring rod 11 is vertically arranged, and the stirring rod 11 can be driven to rotate by a motor; a plurality of stirring sheets 12 for cleaning impurities are welded on the stirring rod 11, and the stirring rod 11 passes through the bracket net 8 and makes the lower end surface of the stirring rod 11 close to the inner bottom wall of the water storage tank 2; the stirring blade 12 is positioned below the bracket net 8, and the stirring blade 12 is contacted with the inner bottom wall of the water storage tank 2.

Referring to 5 of fig. 4, the stirring blade 12 drives impurities located at the bottom of the water storage tank 2 to float upwards in the process of rotation, and the impurities enter the overflow outlet 6 through the inclined surface of the bent plate 9 facing the release pipe 5, so that a connecting component 15 is arranged between the stirring rod 11 and the bent plate 9, the bent plate 9 is tightly attached to the release pipe 5 through the connecting component 15 when the stirring rod 11 rotates, impurities are reduced to enter the overflow outlet 6, and the possibility that the overflow outlet 6 is blocked is reduced.

Referring to fig. 5 and 6, the release pipes 5 are located at both sides of the stirring rod 11, and the release pipes 5 are disposed in an inclined manner; the release pipes 5 incline upwards or downwards from one end to the other end along the length direction of the release pipes 5, the inclination directions of the release pipes 5 positioned at the two sides of the stirring rod 11 are opposite, and the vertical planes of the axes of the release pipes 5 are mutually parallel; the length direction of the bending plate 9 is parallel to the length direction of the associated release tube 5, and the bending plate 9 is rotatably connected to the branch 10, so that the bending plate 9 can be far away from the release tube 5 and can also be clung to the release tube 5;

referring to fig. 5 and 6, the hinge strip 27 is rotatably connected to the support strip 10, one end of the hinge strip 27 away from the support strip 10 is rotatably connected to the bending plate 9, and the rotating shaft of the hinge strip 27 connected to the support strip 10 and the rotating shaft connected to the bending plate 9 are both horizontally arranged; and under the orthographic projection, the axis of the release tube 5 is perpendicular to the rotation axis of the hinge strip 27 connected with the branch strip 10, and the axis of the release tube 5 is perpendicular to the rotation axis of the hinge strip 27 connected with the bending plate 9; because the end of the hinged strip 27 far away from the supporting strip 10 moves along the circle, the bending plate 9 is driven to do the circle movement, and the effect that the bending plate 9 is clung to the release tube 5 is realized.

Referring to fig. 5 and 7, the connecting component 15 includes a sleeve 16 sleeved on the stirring rod 11, the sleeve 16 and the stirring rod 11 are coaxially arranged, a sealing ring 17 located between the stirring rod 11 and the sleeve 16 is adhered to the side wall of the stirring rod 11, and friction exists between the sealing ring 17 and the inner wall of the sleeve 16 to drive the sleeve 16 to move in the rotation process of the stirring rod 11; the connecting assembly 15 further comprises a connecting rod 19 which is hinged to the outer side wall of the sleeve 16, one end of the connecting rod 19, far away from the sleeve 16, is hinged to the bending plate 9 in a ball mode, and the connecting rod 19 is telescopic, so that the stirring rod 11 can drive the connecting rod 19 to move in the rotating process, the bending plate 9 is driven to move by the movement of the connecting rod 19, the bending plate 9 is made to be clung to the release pipe 5, after the bending plate 9 moves to the limit position, sliding friction occurs between the sleeve 16 and the stirring rod 11, and the stirring rod 11 can still rotate normally; in order to reduce the possibility that the sleeve 16 moves along the length direction of the stirring rod 11, two limiting rings 18 are welded on the side wall of the stirring rod 11, the limiting rings 18 are coaxial with the stirring rod 11, and the limiting rings 18 are positioned at two ends of the cylinder 13 and contact with the end face of the sleeve 16, so that limiting is realized.

Referring to fig. 4 and 5, the connecting rod 19 includes a first connecting rod 20 and a second connecting rod 21, the first connecting rod 20 is sleeved on the second connecting rod 21, and the first connecting rod 20 slides along the length direction of the second connecting rod 21, so that the length of the connecting rod 19 can be adjusted, and the interference phenomenon of the connecting rod 19 in the process of driving the bending plate 9 to move is avoided.

Referring to fig. 6, springs 22 corresponding to the hinge strips 27 one by one are arranged on the support net 8, one end of each spring 22 is adhered to the upper surface of the support net 8, the other end of each spring 22 is adhered to the hinge strip 27, and each spring 22 can pull the hinge strip 27 to be clung to the release pipe 5 from the bending plate 9 to a position, far away from the release pipe 5, of the bending plate 9, so that the effect of quick resetting of the bending plate 9 is realized; after the stirring rod 11 stops rotating, the tension of the spring 22 drives the hinge strip 27 to drive the bending plate 9 to move, so that the bending plate 9 is reset.

Referring to fig. 6, in order to make the spring 22 pull the bending plate 9 to the position where the bending plate 9 and the release tube 5 are at the farthest distance, the first limiting block 23 is welded on the support strip 10, the second limiting block 24 is welded on the hinge strip 27, and when the first limiting block 23 and the second limiting block 24 are abutted against each other, the bending plate 9 is farthest from the release tube 5; and the springs 22 on both sides of the stirring rod 11 are pulled in opposite directions.

Referring to fig. 3, the stirring plate 12 contacts with the inner bottom wall of the water storage tank 2, a cylinder 13 communicated with the inside of the water storage tank 2 is welded on the bottom plate of the water storage tank 2, the cylinder 13 is positioned below the water storage tank 2, and the cylinder 13 and the water storage tank 2 are coaxial; one end of the cylinder 13, which is far away from the water storage tank 2, is welded with a rotary valve 14; the connection between the contact point of the stirring sheet 12 contacting the side wall of the stirring rod 11 and the axis of the stirring rod 11 in the length direction of the stirring sheet 12 forms an acute angle under the orthographic projection, so that the stirring sheet 12 drives impurities to enter the cylinder 13 in the rotating process; when the impurities in the cylinder 13 are too much, the rotary valve 14 can be opened to clean the impurities.

Referring to fig. 2, a first valve 25 is arranged on a water pipe between the water storage tank 2 and the soil dehydrator, a second valve 26 is arranged on a water pipe between the water storage tank 2 and the brick press, and the first valve 25 and the second valve 26 control sewage inlet and outlet; and the water storage tank 2 is provided with a vent hole 28 for realizing the balance of internal and external air pressure.

The implementation principle of the process and the equipment for preparing the baking-free brick by using the river sludge in the embodiment of the application is as follows: the sewage from the soil dehydrator enters the water storage tank 2 through the first valve 25, chemical agents are added into the water storage tank 2 through the adding pipe 4 and the releasing pipe 5, then the stirring rod 11 is started, the effect of cleaning impurities by the stirring sheet 12 is achieved, the rotation of the stirring sheet 12 drives the sewage to flow, so that the sewage and the chemical agents fully react, at the moment, the connecting rod 19 also moves to drive the bending plate 9 to cling to the releasing pipe 5, and the possibility of blocking caused by the impurities entering the overflow port 6 of the releasing pipe 5 is reduced; after the stirring rod 11 stops, the spring 22 pulls the hinge strip to realize quick return of the bending plate 9; the treated sewage enters the brick machine through the second valve 26.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims

1. A process for preparing baking-free bricks by using river sludge, comprising:

s2, a reaction device (1) is arranged to treat the sewage in the S1;

s6, placing the primary blank into a curing pool for curing;

one end of the reaction device (1) in the S2 is communicated with a sewage outlet of the soil dehydrator in the S1, and the other end of the reaction device (1) is arranged on the brick press in the S5 and is used for adding water to ingredients; the reaction device (1) comprises a water storage tank (2), and an adding component (3) which is arranged on the water storage tank (2) and is used for treating sewage;

the adding component (3) comprises a plurality of adding pipes (4) which are fixed on the outer side wall of the water storage tank (2) and are used for adding chemical agents, the adding component (3) also comprises a releasing pipe (5) which is arranged inside the water storage tank (2) and is communicated with the corresponding adding pipe (4), and a plurality of overflow outlets (6) for discharging the chemical agents are formed in the releasing pipe (5);

the inner wall of the water storage tank (2) is provided with a support net (8), and the support net (8) is positioned below the release pipe (5); a bending plate (9) for reducing the possibility of blocking the overflow outlet (6) is arranged above each release pipe (5), a plurality of support strips (10) positioned at two sides of each release pipe (5) are fixed on the support net (8), the support strips (10) are connected to the bending plate (9), and the overflow outlet (6) faces one side of the bending plate (9);

the water storage tank (2) is rotationally connected with a stirring rod (11) and a stirring sheet (12) fixed on the stirring rod (11); the stirring rod (11) is vertically arranged, the stirring sheet (12) is contacted with the inner bottom wall of the water storage tank (2), a cylinder (13) for collecting impurities is fixed on the bottom plate of the water storage tank (2), and the cylinder (13) is communicated with the inside of the water storage tank (2); the connecting line of the stirring blade (12) in the length direction, the contact point of the stirring blade (12) contacting the stirring rod (11) and the central point of the stirring rod (11) forms an acute angle under orthographic projection; the cylinder (13) is provided with a rotary valve (14) for opening the cylinder (13) to take out impurities; the bending plates (9) are inverted V-shaped and cover the release pipe (5), and the bending plates (9) are arranged at intervals; a connecting component (15) for reducing the possibility of impurities entering the overflow port (6) is arranged between the stirring rod (11) and the bending plate (9);

the connecting component (15) comprises a sleeve (16) sleeved on the stirring rod (11), a sealing ring (17) is arranged between the inner wall of the sleeve (16) and the stirring rod (11), the connecting component (15) also comprises a connecting rod (19) which is arranged on the sleeve (16) and is connected with a corresponding bending plate (9), one end of the connecting rod (19) is hinged to the outer side wall of the sleeve (16) in a ball manner, the other end of the connecting rod (19) is hinged to the bending plate (9) in a ball manner, and the connecting rod (19) is telescopic; two limiting rings (18) which are abutted against the end face of the sleeve (16) are fixed on the side wall of the stirring rod (11);

a spring (22) for accelerating the speed of the bending plate (9) away from the release pipe (5) is arranged on the support net (8), one end of the spring (22) is fixed on the support net (8), and the other end of the spring (22) is arranged on the bending plate (9); the support strip (10) is provided with a first limiting block (23) which is used for being pulled to the bending plate (9) and is the largest in distance with the release pipe (5) in cooperation with the spring (22), and a second limiting block (24) which is arranged on the bending plate (9) and is used for being abutted against the first limiting block (23).

2. An apparatus for a process for preparing baking-free bricks by using river sludge, based on the process for preparing baking-free bricks by using river sludge according to claim 1, characterized in that: the release pipes (5) are obliquely arranged upwards or downwards from one end to the other end along the length direction of the release pipes, the inclination directions of the adding pipes (4) positioned at the two sides of the stirring rod (11) are opposite, and the vertical planes of the axes of the release pipes (5) are parallel to each other; the length direction of the bending plate (9) is parallel to the length direction of the release pipe (5) positioned on the same side of the stirring rod (11), and the bending plate (9) is rotationally connected with the supporting strip (10) so that the bending plate (9) can be far away from the release pipe (5) or clung to the release pipe (5).

3. The apparatus for preparing baking-free bricks from river sludge according to claim 2, wherein: the connecting rod (19) comprises a first connecting rod (20) and a second connecting rod (21) sleeved on the first connecting rod (20), and the first connecting rod (20) slides along the length direction of the second connecting rod (21).