A combined lime digester

Abstract

This utility model belongs to the field of digester technology, and particularly relates to a combined lime digester, including a base, a digestion chamber fixedly installed on the top of the base, a feed hopper provided on the top surface of the digestion chamber near one end, a stirring mechanism rotatably connected inside the digestion chamber, sealing components provided between both ends of the digestion chamber and the stirring mechanism, support components for supporting the stirring mechanism provided on both ends of the base near both ends of the digestion chamber, a drive device for driving the stirring mechanism to rotate provided on the base, and a slag lifter fixedly installed on one side of the digestion chamber. This utility model has a compact structure, is simple and reliable, occupies a small area, and ensures a complete digestion reaction.

Description

Technical Field

[0001] This utility model belongs to the field of digestion machine technology, and in particular relates to a combined lime digester. Background Technology

[0002] The existing lime digester mainly consists of a power unit, filter screen, roller ring, cylinder, gear ring, and support roller device. The cylinder is divided into four zones: buffer zone, digestion zone, homogenization zone, and slag separation zone. The tail end is equipped with a slag removal and discharge device. The quicklime blocks absorb water and digest in the cylinder. The lime slurry flows out through the drain outlet through the screen holes. Undigested overburned quicklime, stones, and impurities are discharged through the tail end. However, the existing lime digester has the problem of insufficient digestion of lime slurry and poor slag discharge effect, which cannot meet the usage requirements. A combined lime digester needs to be designed to meet the usage requirements. Utility Model Content

[0003] The main technical problem to be solved by this utility model is to provide a combined lime digester that is compact, simple and reliable, occupies a small area, and has a complete digestion reaction.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] A combined lime digester includes a base, a digestion chamber fixedly installed on top of the base, a feed hopper located near one end of the top surface of the digestion chamber, a stirring mechanism rotatably connected inside the digestion chamber, sealing components between both ends of the digestion chamber and the stirring mechanism, support components for supporting the stirring mechanism located near both ends of the base, a drive device for driving the stirring mechanism to rotate on the base, and a slag lifter fixedly installed on one side of the digestion chamber.

[0006] The following are further optimizations of the above technical solution by this utility model:

[0007] The mixing mechanism includes a rotating shaft, which is rotatably connected to the digester. Along its length, the rotating shaft is sequentially equipped with a pushing device, a mixing device, and a feeding device. The pushing device is close to the feed hopper, and the feeding device is far from the feed hopper.

[0008] Further optimization: The sealing assembly includes a sealing seat, which is detachably fixed to the digester. A sealing gasket is provided between the sealing seat and the rotating shaft. A sealing disc for fixing the sealing gasket is detachably fixed to the end of the sealing seat away from the digester.

[0009] Further optimization: The support assembly includes a support base, which is fixedly connected to the base, and a bearing housing bearing assembly is fixedly connected to the top surface of the support base.

[0010] Further optimization: The bearing housing and bearing assembly include a bearing housing, which is detachably fixed to a support base. A bearing is installed inside the bearing housing, and a rotating shaft is sleeved inside the bearing.

[0011] Further optimization: The drive unit includes a motor and a reducer, both of which are fixedly mounted on the base. The output end of the motor is connected to the input end of the reducer, and the output end of the reducer is connected to the rotating shaft.

[0012] Further optimization: The slag lifter includes a slag lift trough, which is fixed to one side of the digester. Both the slag lift trough and the digester have feed ports on their respective sides that are close to each other. The two feed ports are set up correspondingly and connected to each other. An overflow pipe is set on the side of the slag lift trough away from the digester.

[0013] Further optimization: A slag-lifting shaft is rotatably connected inside the slag-lifting trough, and slag-lifting spiral blades are fixed on the slag-lifting shaft. A slag discharge pipe is installed on the bottom surface of the slag-lifting trough near its upper end.

[0014] Further optimization: The slag lifting spiral blade includes a first slag lifting spiral blade and a second slag lifting spiral blade. The second slag lifting spiral blade is located above the first slag lifting spiral blade. Both the first and second slag lifting spiral blades are fixed to the surface of the slag lifting shaft. The second slag lifting spiral blade has multiple blade holes.

[0015] Further optimization: A motor support is fixed to the upper end of the slag lifting trough, and a slag lifting motor is installed on the motor support. The output end of the slag lifting motor is connected to the slag lifting shaft for transmission.

[0016] This utility model features a rationally designed, compact, simple, reliable, and compact structure with minimal footprint. During operation, lime and water enter the digestion tank from the feed hopper. The segmented stirring mechanism rotates to ensure full contact and reaction between the lime and water, generating an emulsion. The digestion reaction is thorough. A material transfer device moves the lime slag and unreacted lime from the digestion tank to the bottom of the slag-lifting trough for a secondary digestion reaction. The fully reacted emulsion flows out through the overflow pipe. The slag-lifting spiral blades transport the unreacted lime slag from the bottom of the slag-lifting trough to the top and discharge it through the slag outlet pipe, thus meeting the usage requirements.

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0019] Figure 2 This is a cross-sectional structural diagram of an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the stirring mechanism in an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the main structure of the stirring mechanism in an embodiment of this utility model;

[0022] Figure 5 This is a schematic diagram of the stirring assembly in an embodiment of the present invention;

[0023] Figure 6 for Figure 2 Enlarged structural diagram at point A;

[0024] Figure 7 This is a schematic diagram of the slag removal machine in an embodiment of the present utility model;

[0025] Figure 8 for Figure 7 A magnified structural diagram at point B in the middle.

[0026] In the diagram: 1-Base; 2-Digestion tank; 201-Feed hopper; 3-Stirring mechanism; 301-Rotating shaft; 302-Support bar; 303-Pushing screw blade; 304-First half support; 305-Support plate; 306-Stirring plate; 307-Reinforcing plate; 308-Second half support; 309-Connecting plate; 310-Pulling plate; 4-Sealing assembly; 401-Sealing seat; 402-Sealing disc; 403-Sealing gasket; 5 - Support assembly; 501 - Support base; 502 - Bearing seat bearing assembly; 6 - Drive device; 601 - Motor; 602 - Reducer; 7 - Slag lifter; 701 - Slag lifting trough; 702 - Slag lifting shaft; 703 - First slag lifting spiral blade; 704 - Second slag lifting spiral blade; 7041 - Blade hole; 705 - Material outlet; 706 - Overflow pipe; 707 - Slag discharge pipe; 708 - Motor support; 709 - Slag lifting motor. Detailed Implementation

[0027] like Figure 1-8 As shown, a combined lime digester includes a base 1, a digestion box 2 is fixedly installed on the top of the base 1, a feed hopper 201 is provided on the top surface of the digestion box 2 near one end, and a stirring mechanism 3 is rotatably connected inside the digestion box 2.

[0028] With this design, lime and water enter the digestion tank 2 from the feed hopper 201, and the stirring mechanism 3 rotates to ensure that the lime and water come into full contact and react to form an emulsion.

[0029] The stirring mechanism 3 includes a rotating shaft 301, which is rotatably connected to the digestion tank 2. Along its length, the rotating shaft 301 is provided with a pushing device, a stirring device, and a feeding device. The pushing device is close to the feed hopper 201, and the feeding device is far away from the feed hopper 201.

[0030] With this design, the rotating shaft 301 drives the pushing device, stirring device and feeding device to rotate, which makes it easy to instantly remove the lime from the water surface to react with the air, and then instantly enter the water to react with the water, repeating the process to achieve digestion.

[0031] The feeding device includes three support bars 302, which are fixedly connected to the rotating shaft 301. The three support bars 302 are arranged in a ring around the rotating shaft 301, and feeding spiral blades 303 are fixedly connected to the three support bars 302.

[0032] With this design, the pusher screw blade 303 rotates with the rotating shaft 301, which facilitates the thorough mixing of lime and water. During the rotation of the pusher screw blade 303, it can push the lime and water towards the mixing device and the feeding device. The support bar 302 creates a channel between the pusher screw blade 303 and the rotating shaft 301 to facilitate the circulation of water.

[0033] In addition to this embodiment, the number of support bars 302 can be more than three; the pusher screw blades 303 can also be directly fixed to the outer surface of the rotating shaft 301.

[0034] The stirring device includes seven stirring components, which are fixedly connected to the rotating shaft 301. The seven stirring components are arranged in a spiral around the rotating shaft 301.

[0035] This design further improves the mixing effect of lime and water.

[0036] In addition to this embodiment, the number of stirring components can also be two, three, four, five, six, or seven or more.

[0037] The stirring assembly includes two first half supports 304, which are respectively disposed on both sides of the rotating shaft 301 and fixedly connected thereto. Support plates 305 are fixedly connected to the two first half supports 304 on the side away from each other. An agitator plate 306 is detachably fixed to one side of the support plate 305 by bolts.

[0038] The two stirring plates 306 are arranged at an angle.

[0039] The included angle α between the two stirring plates 306 is 60±1°.

[0040] This design allows for more thorough mixing of lime and water.

[0041] Both sides of the support plate 305 are fixedly connected to the reinforcing plate 307, and the reinforcing plate 307 is fixedly connected to its corresponding first half support 304, thereby increasing the strength of the stirring assembly.

[0042] The feeding device includes two feeding components, which are respectively located on both sides of the rotating shaft 301 and fixedly connected to it.

[0043] The two feeding components are arranged symmetrically.

[0044] The feeding assembly includes two second half supports 308, which are fixedly connected to the rotating shaft 301. The two second half supports 308 are spaced apart along the length of the rotating shaft 301. A connecting plate 309 is fixedly connected to the side of each second half support 308 away from the rotating shaft 301. A feeding plate 310 is fixedly connected to the end of each connecting plate 309 away from the rotating shaft 301.

[0045] Sealing components 4 are provided at both ends of the digester 2 and between the stirring mechanism 3.

[0046] The sealing assembly 4 includes a sealing seat 401, which is detachably fixed to the digester 2 by bolts. A sealing gasket 403 is provided between the sealing seat 401 and the rotating shaft 301. A sealing disc 402 for fixing the sealing gasket 403 is detachably fixed to the end of the sealing seat 401 away from the digester 2 by bolts.

[0047] Support components 5 for supporting the stirring mechanism 3 are provided at both ends of the base 1 near the digestion tank 2.

[0048] The support assembly 5 includes a support base 501, which is fixedly connected to the base 1, and a bearing housing bearing assembly 502 is fixedly connected to the top surface of the support base 501.

[0049] The bearing housing and bearing assembly 502 includes a bearing housing, which is detachably fixed to a support 501. A bearing is installed inside the bearing housing, and a rotating shaft 301 is sleeved inside the bearing.

[0050] Bearing housing and bearing assembly 502 is existing technology, and vertical bearing housing and bearing assembly is preferred.

[0051] The base 1 is equipped with a drive device 6 for driving the stirring mechanism 3 to rotate.

[0052] The drive unit 6 includes a motor 601 and a reducer 602. Both the motor 601 and the reducer 602 are fixedly mounted on the base 1 by a mounting bracket. The output end of the motor 601 is connected to the input end of the reducer 602, and the output end of the reducer 602 is connected to the rotating shaft 301.

[0053] This design allows the stirring mechanism 3 to be driven to rotate via the motor 601 and the reducer 602. By adjusting the speed of the motor 601, the rotation speed of the stirring mechanism 3 can be easily controlled, thereby effectively stirring the lime and water.

[0054] A slag lifter 7 is fixedly installed on one side of the digester 2.

[0055] The slag lifter 7 includes a slag lifter 701, which is fixed to one side of the digester 2. Both the slag lifter 701 and the digester 2 have feed ports 705 on their respective sides. The two feed ports 705 are correspondingly arranged and interconnected, so that the lime slag and unreacted lime in the digester 2 can easily enter the slag lifter 701 from the feed ports 705. An overflow pipe 706 is provided on the side of the slag lifter 701 away from the digester 2.

[0056] With this design, the material feeding device rotates to transfer the lime slag and unreacted lime in the digestion tank 2 to the bottom of the slag lifting tank 701 for secondary digestion reaction, and the fully reacted emulsion flows out from the overflow pipe 706.

[0057] A slag-lifting shaft 702 is rotatably connected inside the slag-lifting trough 701. A slag-lifting spiral blade is fixedly connected to the slag-lifting shaft 702. A slag discharge pipe 707 is provided on the bottom surface of the slag-lifting trough 701 near its upper end.

[0058] With this design, the slag lifting shaft 702 rotates, which facilitates the slag lifting spiral blades to transport the lime slag at the bottom of the slag lifting tank 701 to the top of the slag lifting tank 701 and discharge it from the slag outlet pipe 707; in addition, the slag lifting spiral blades stir the lime and emulsion at the bottom of the slag lifting tank 701 that have not reacted sufficiently, which is beneficial to the secondary digestion reaction.

[0059] A motor support 708 is fixedly connected to the upper end of the slag lifting trough 701. A slag lifting motor 709 is installed on the motor support 708. The output end of the slag lifting motor 709 is connected to the slag lifting shaft 702 through a coupling.

[0060] The slag-lifting spiral blades include a first slag-lifting spiral blade 703 and a second slag-lifting spiral blade 704. The second slag-lifting spiral blade 704 is located above the first slag-lifting spiral blade 703. Both the first slag-lifting spiral blade 703 and the second slag-lifting spiral blade 704 are fixed to the surface of the slag-lifting shaft 702. The second slag-lifting spiral blade 704 has multiple blade holes 7041.

[0061] This design ensures that while the first slag-lifting spiral blade 703 and the second slag-lifting spiral blade 704 convey the lime slag to the slag discharge pipe 707 for discharge, the emulsion conveyed along with the lime slag can flow back into the slag-lifting tank 701 through the blade hole 7041, thus preventing the emulsion from splashing out of the slag-lifting tank 701.

[0062] In use, lime and water enter the digestion tank 2 from the feed hopper 201. The segmented stirring mechanism 3 rotates to ensure that the lime and water come into full contact and react to form an emulsion. The feeding device transfers the lime slag and unreacted lime in the digestion tank 2 to the bottom of the slag lifting trough 701 for secondary digestion reaction. The fully reacted emulsion flows out from the overflow pipe 706. The slag lifting spiral blades convey the unreacted lime slag at the bottom of the slag lifting trough 701 to the top of the slag lifting trough 701 and discharge it from the slag outlet pipe 707, which greatly improves the lime slag discharge effect.

[0063] For those skilled in the art, any changes, modifications, substitutions, and variations made to the implementation methods without departing from the principles and spirit of this utility model, based on the teachings of this utility model, still fall within the protection scope of this utility model.

Claims

1. A combined lime slaker comprising a base (1), characterised in that: A digestion tank (2) is fixedly installed above the base (1). A feed hopper (201) is provided on the top surface of the digestion tank (2) near one end. A stirring mechanism (3) is rotatably connected inside the digestion tank (2). A sealing component (4) is provided between both ends of the digestion tank (2) and the stirring mechanism (3). A support component (5) for supporting the stirring mechanism (3) is provided on both ends of the base (1) near the digestion tank (2). A driving device (6) for driving the stirring mechanism (3) to rotate is provided on the base (1). A slag lifter (7) is fixedly installed on one side of the digestion tank (2).

2. A combined lime slaker as claimed in claim 1, characterized in that: The stirring mechanism (3) includes a rotating shaft (301), which is rotatably connected to the digester (2). The rotating shaft (301) is provided with a pushing device, a stirring device and a feeding device in sequence along its length. The pushing device is close to the feed hopper (201) and the feeding device is far away from the feed hopper (201).

3. A combined lime slaking machine according to claim 2, characterized in that: The sealing assembly (4) includes a sealing seat (401), which is detachably fixed to the digester (2). A sealing gasket (403) is provided between the sealing seat (401) and the rotating shaft (301). A sealing disc (402) for fixing the sealing gasket (403) is detachably fixed to one end of the sealing seat (401) away from the digester (2).

4. A combined lime slaking machine according to claim 3, characterized in that: The support assembly (5) includes a support base (501), which is fixedly connected to the base (1), and a bearing seat bearing assembly (502) is fixedly connected to the top surface of the support base (501).

5. A combined lime slaking machine according to claim 4, characterized in that: The bearing housing and bearing assembly (502) includes a bearing housing, which is detachably fixed to a support (501). A bearing is installed inside the bearing housing, and a rotating shaft (301) is sleeved inside the bearing.

6. A combined lime slaking machine according to claim 5, characterized in that: The drive device (6) includes a motor (601) and a reducer (602). The motor (601) and the reducer (602) are both fixedly mounted on the base (1). The output end of the motor (601) and the input end of the reducer (602) are connected in a transmission connection. The output end of the reducer (602) is connected in a transmission connection with the rotating shaft (301).

7. A combined lime slaking machine according to claim 6, characterized in that: The slag lifter (7) includes a slag lifter trough (701), which is fixed to one side of the digester (2). Both the slag lifter trough (701) and the digester (2) have feed inlets (705) on their respective sides. The two feed inlets (705) are correspondingly arranged and interconnected. An overflow pipe (706) is provided on the side of the slag lifter trough (701) away from the digester (2).

8. A combined lime slaking machine according to claim 7, characterized in that: The slag-lifting trough (701) is rotatably connected to a slag-lifting shaft (702), and a slag-lifting spiral blade is fixedly connected to the slag-lifting shaft (702). A slag-discharge pipe (707) is provided on the bottom surface of the slag-lifting trough (701) near its upper end.

9. A combined lime slaking machine according to claim 8, characterized in that: The slag-lifting spiral blades include a first slag-lifting spiral blade (703) and a second slag-lifting spiral blade (704). The second slag-lifting spiral blade (704) is located above the first slag-lifting spiral blade (703). Both the first slag-lifting spiral blade (703) and the second slag-lifting spiral blade (704) are fixed to the surface of the slag-lifting shaft (702). The second slag-lifting spiral blade (704) has multiple blade holes (7041).

10. A combined lime slaking machine according to claim 9, characterized in that: The upper end of the slag removal tank (701) is fixedly connected to a motor support (708), and a slag removal motor (709) is installed on the motor support (708). The output end of the slag removal motor (709) is connected to the slag removal shaft (702) for transmission.

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