Continuous mixing and reacting device for fly ash and sludge in cooperation with ceramic pellet production
By employing a counter-rotating spiral stirring blade design in the mixing reaction device, the problem of low mixing efficiency of fly ash and sludge was solved, achieving more efficient material fusion.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINHUA VOCATIONAL TECH COLLEGE
- Filing Date
- 2025-08-21
- Publication Date
- 2026-08-04
AI Technical Summary
Existing mixing reactors have insufficient mixing efficiency when mixing fly ash and sludge, making it difficult to effectively handle complex mixtures with significantly different physical properties, strong adhesion, and a tendency to caking.
It adopts a design with two parallel stirring shafts driving the propeller blades to rotate in opposite directions. The reverse rotation of the stirring shafts is achieved through a transmission component, which enhances the mixing effect.
It improves the mixing efficiency of fly ash and sludge, ensuring that the materials are rapidly blended in the mixing chamber, thus solving the mixing problem.
Smart Images
Figure CN224585929U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of mixing reaction devices, and more specifically, it relates to a continuous mixing reaction device for co-producing ceramsite from fly ash and sludge. Background Technology
[0002] Twin-shaft mixers, as a common type of powder and semi-solid mixing equipment, are widely used in various fields such as chemical engineering, building materials, and environmental solid waste treatment. The equipment mainly consists of two parallel mixing shafts equipped with stirring blades, a transmission system, a drive motor, a mixing tank (vessel body), and corresponding support structures. During operation, the two mixing shafts typically rotate in opposite directions. The stirring blades, during rotation, perform multiple actions on the materials within the tank, including shearing, convection, and diffusion, to achieve homogeneous mixing. In high-difficulty solid waste resource utilization projects such as the co-production of ceramsite from fly ash and sludge, twin-shaft mixers are often selected as raw material mixing equipment due to their ability to handle viscous and easily agglomerated materials.
[0003] However, when faced with complex mixtures such as fly ash and sludge, which have significantly different physical properties (fly ash is fine powder with good flowability, while sludge is wet, sticky, and prone to clumping) and strong adhesion and caking characteristics, existing conventional mixing reaction devices still have shortcomings in terms of mixing efficiency. Utility Model Content
[0004] To address the aforementioned technical problems, this invention provides a continuous mixing reaction device for co-producing ceramsite from fly ash and sludge, thereby solving the technical problem of insufficient mixing efficiency in traditional mixing reaction devices in the prior art.
[0005] The purpose and effectiveness of this utility model's continuous mixing and reaction device for co-producing ceramsite from fly ash and sludge are achieved through the following specific technical means:
[0006] A continuous mixing reaction device for co-producing ceramsite from fly ash and sludge includes a mixing chamber;
[0007] A mixing chamber cover is provided above the mixing chamber. Two sets of feed inlets are provided on both sides of the mixing chamber near the mixing chamber cover. A discharge outlet is provided at the bottom of the mixing chamber. Two sets of stirring shafts are provided inside the mixing chamber. A set of stirring blades is provided on the outside of each of the two sets of stirring shafts. The lower ends of the two sets of stirring shafts are respectively inserted into two sets of limiting blocks at the bottom of the mixing chamber.
[0008] A gear motor housing is provided above the mixing chamber cover, and a motor and transmission components are provided inside the gear motor housing. The stirring shaft passes through the mixing chamber cover.
[0009] As a further embodiment of this utility model, the transmission assembly includes two sets of first helical gears, two sets of second helical gears, a first transmission shaft, a first spur gear, a second spur gear, a second transmission shaft, and a coupling.
[0010] Two sets of first helical gears are respectively disposed on two sets of stirring shafts. Each set of first helical gears is meshed with a second helical gear, and the two sets of second helical gears are in opposite directions and coaxially welded to the first transmission shaft. A first spur gear is also welded to the first transmission shaft. A second spur gear is meshed above the first spur gear. A second transmission shaft is welded to the center of the second spur gear. One end of the second transmission shaft is connected to the coupling, and the other end of the coupling is connected to the motor.
[0011] As a further embodiment of this utility model, two sets of limiting bearings are respectively provided at both ends of the first transmission shaft.
[0012] As a further embodiment of this utility model, the two sets of stirring blades provided on the two sets of stirring shafts are spiral-shaped, and the two sets of stirring blades are in opposite directions.
[0013] As a further embodiment of this utility model, a valve is connected to the bottom flange of the discharge port.
[0014] As a further embodiment of this utility model, the mixing chamber cover has a double-flange structure.
[0015] As a further embodiment of this utility model, a limiting seat is provided at the upper end of both sets of stirring shafts, and two sets of retaining seats are provided on the mixing chamber cover.
[0016] As a further embodiment of this utility model, two sets of bases are respectively provided at both ends of the mixing chamber near the bottom, and multiple sets of fixing screw holes are provided on both sets of bases.
[0017] Compared with the prior art, the present invention has the following beneficial effects:
[0018] Compared with traditional mixing reactors, this mixing reactor uses two parallel stirring shafts to drive two propellers moving in opposite directions to stir in the opposite direction, which allows the reactants in the mixing chamber to mix more quickly and improves the mixing efficiency of the device. This solves the efficiency problem when mixing complex mixing objects such as fly ash and sludge, which have significantly different physical properties and are highly adhesive and prone to caking. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of this utility model;
[0020] Figure 2 This is an exploded view of the present invention;
[0021] Figure 3 This is a perspective view of the present invention;
[0022] Figure 4 This is a schematic diagram of the structure of the motor, threaded rod, and transmission assembly of this utility model.
[0023] 101. Mixing chamber; 102. Mixing chamber cover; 103. Feed inlet; 104. Discharge outlet; 105. Base; 106. Stirring shaft; 107. Motor housing; 108. Motor; 109. Valve; 201. Stirring blade; 202. First helical gear; 203. Second helical gear; 204. First drive shaft; 205. First spur gear; 206. Second spur gear; 207. Second drive shaft; 208. Coupling; 301. Limiting block; 302. Limiting shaft seat; 303. Limiting seat; 304. Card holder; 305. Fixing screw hole. Detailed Implementation
[0024] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.
[0025] Example:
[0026] As attached Figure 1 To be continued Figure 4 As shown:
[0027] A continuous mixing and reaction device for co-producing ceramsite from fly ash and sludge includes a mixing chamber 101;
[0028] Specifically, a mixing chamber cover 102 is provided above the mixing chamber 101. Two sets of feed inlets 103 are provided on both sides of the mixing chamber 101 near the mixing chamber cover 102. A discharge outlet 104 is provided at the bottom of the mixing chamber 101. Bases 105 are provided at both ends of the mixing chamber 101 near the bottom. Two sets of stirring shafts 106 are provided inside the mixing chamber 101. A set of stirring blades 201 is provided on the outer side of each of the two sets of stirring shafts 106. The lower ends of the two sets of stirring shafts 106 are respectively connected to two sets of limiting blocks 301 welded to the bottom of the mixing chamber 101. A gear motor housing 107 is provided above the mixing chamber cover 102. A motor 108 and a transmission assembly are provided inside the gear motor housing 107. The stirring shafts 106 pass through the mixing chamber cover 102.
[0029] It should be noted that the mixing chamber cover 102 has a double half-flange structure and is equipped with a retaining seat 304. Both sets of stirring shafts 106 are equipped with limit seats 303, which cooperate with the two sets of retaining seats 304 on the mixing chamber cover 102 to restrict the downward movement of the two sets of stirring shafts 106.
[0030] Understandably, the mixing chamber cover 102 is designed with a double half-flange structure to make it more convenient to install the stirring shaft 106. At the same time, the limiting seat 303 and the retaining seat 304 can prevent the two sets of first helical gears 202 and two sets of second helical gears 203 from disengaging when the stirring shaft 106 is accidentally moved downward.
[0031] The transmission assembly includes two sets of first helical gears 202, two sets of second helical gears 203, a first transmission shaft 204, a first spur gear 205, a second spur gear 206, a second transmission shaft 207, and a coupling 208. The two sets of first helical gears 202 are respectively mounted on two sets of stirring shafts 106. Each set of first helical gears 202 is meshed with a set of second helical gears 203, and the two sets of second helical gears 203 are opposite in direction and coaxially welded to the first transmission shaft 204. A first spur gear 205 is also welded to the first transmission shaft 204. A second spur gear 206 meshes above the first spur gear 205. A second transmission shaft 207 is welded in the middle of the second spur gear 206. One end of the second transmission shaft 207 is connected to the coupling 208, and the other end of the coupling 208 is connected to the motor 108.
[0032] Understandably, the operation of the motor 108 drives the coupling 208 and the second transmission shaft 207 to drive the second spur gear 206 to rotate, thereby transferring kinetic energy to the first spur gear 205 to rotate. The first spur gear 205 then drives the coaxial first transmission shaft 204 and two sets of second helical gears 203. The two sets of second helical gears 203 then drive a set of first helical gears 202 in opposite directions to drive the two sets of stirring shafts 106 to rotate in opposite directions.
[0033] Furthermore, two sets of limiting bearings 302 are respectively provided at both ends of the first drive shaft 204.
[0034] Understandably, the limiting bearing 302 effectively prevents the second helical gear 203 from displacing and losing mesh with the first helical gear 202 during power transmission by rigidly constraining the axial degree of freedom of the first transmission shaft 204. This precision positioning design ensures the stability of the helical gear meshing transmission and avoids gear wear caused by axial displacement, thereby extending the service life of the transmission components and ensuring torque transmission efficiency.
[0035] Furthermore, the two sets of stirring blades 201 provided on the two sets of stirring shafts 106 are spiral-shaped, and the two sets of stirring blades 201 are in opposite directions.
[0036] Understandably, the reverse-designed spiral stirring blades 201, when rotating in opposite directions on both shafts, can simultaneously push the materials at both ends of the mixing chamber 101 to the middle of the mixing chamber 101, enabling the materials to blend more quickly.
[0037] In this embodiment, a valve 109 is connected to the bottom flange of the discharge port 104.
[0038] Understandably, the flange-connected valve 109 can control the outflow of materials. By adjusting the opening of the valve 109, the residence time of the ceramsite mixture in the mixing chamber 101 can be controlled to ensure that the reaction is completed before entering the subsequent process.
[0039] In this embodiment, the base 105 is provided with multiple sets of fixing screw holes 305.
[0040] Understandably, fixing the bolt hole 305 secures the mixing reaction device to the foundation platform with bolts, effectively suppressing vibration and displacement caused by the asymmetry of the biaxial load during equipment operation.
[0041] The specific usage and function of this embodiment: When using this equipment, the user first needs to fix the mixing reaction device in place through the fixing screw hole 305 to prevent the device from tipping over during operation and to confirm that the valve 109 is in the closed state. Then, connect the pipes for transmitting fly ash and sludge to a set of feed ports 103 respectively, and start the equipment to begin feeding. The operation of the motor 108 drives the coupling 208 and the second drive shaft 207 to drive the second spur gear 206 to rotate, thereby transferring kinetic energy to the first spur gear 205 to rotate. The first spur gear 205 then drives the coaxial first drive shaft 204 and the two sets of second spur gears 206 to rotate. The helical gear 203 drives a set of first helical gears 202 in opposite directions, which in turn drives the two sets of stirring shafts 106 to rotate in opposite directions. The two sets of opposing stirring blades 201 on the stirring shafts 106 then drive the material in the mixing chamber 101 to mix and react. After the mixing reaction is completed, the motor 108 can be paused and the next feeding can be carried out by changing the feed port 103 pipe. The above process is repeated until all the mixing reaction processes are completed. Then, the valve 109 is opened to let the reacted material flow out through the discharge port 104. After all the material has flowed out, the equipment is cleaned for the next use.
[0042] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.
Claims
1. A continuous mixing and reaction device for co-producing ceramsite from fly ash and sludge, characterized in that: Includes a mixed storage compartment (101); A mixing chamber cover (102) is provided above the mixing chamber (101). Two sets of feed inlets (103) are provided on both sides of the mixing chamber (101) near the mixing chamber cover (102). A discharge port (104) is provided at the bottom of the mixing chamber (101). Two sets of stirring shafts (106) are provided inside the mixing chamber (101). A set of stirring blades (201) is provided on the outside of each of the two sets of stirring shafts (106). The lower ends of the two sets of stirring shafts (106) are respectively inserted into two sets of limiting blocks (301) at the bottom of the mixing chamber (101). A gear motor housing (107) is provided above the mixing chamber cover (102). A motor (108) and a transmission assembly are provided inside the gear motor housing (107). The stirring shaft (106) passes through the mixing chamber cover (102).
2. The continuous mixing and reaction device for co-producing ceramsite from fly ash and sludge according to claim 1, characterized in that: The transmission assembly includes two sets of first helical gears (202), two sets of second helical gears (203), a first transmission shaft (204), a first spur gear (205), a second spur gear (206), a second transmission shaft (207), and a coupling (208); Two sets of first helical gears (202) are respectively disposed on two sets of stirring shafts (106). Two sets of first helical gears (202) are meshed with second helical gears (203). The two sets of second helical gears (203) are opposite in direction and coaxially welded to the first transmission shaft (204). The first transmission shaft (204) is also welded with a first spur gear (205). A second spur gear (206) is meshed above the first spur gear (205). A second transmission shaft (207) is welded to the center of the second spur gear (206). One end of the second transmission shaft (207) is connected to the coupling (208), and the other end of the coupling (208) is connected to the motor (108).
3. The continuous mixing and reaction device for co-producing ceramsite from fly ash and sludge according to claim 2, characterized in that: Two sets of limiting bearings (302) are respectively provided at both ends of the first transmission shaft (204).
4. The continuous mixing and reaction device for co-producing ceramsite from fly ash and sludge according to claim 1, characterized in that: The two sets of stirring blades (201) provided on the two sets of stirring shafts (106) are spiral in shape, and the two sets of stirring blades (201) are in opposite directions.
5. The continuous mixing and reaction device for co-producing ceramsite from fly ash and sludge according to claim 1, characterized in that: A valve (109) is connected to the bottom flange of the discharge port (104).
6. The continuous mixing and reaction device for co-producing ceramsite from fly ash and sludge according to claim 1, characterized in that: The mixing chamber cover (102) has a double-flange structure.
7. The continuous mixing and reaction device for co-producing ceramsite from fly ash and sludge according to claim 1, characterized in that: Both sets of stirring shafts (106) are provided with limit seats (303) at their upper ends, and the mixing chamber cover (102) is provided with two sets of retaining seats (304).
8. The continuous mixing and reaction device for co-producing ceramsite from fly ash and sludge according to claim 1, characterized in that: The mixing chamber (101) has two sets of bases (105) at its two ends near the bottom, and each set of bases (105) has multiple sets of fixing screw holes (305).