Wet-type double-shaft stirring machine

Abstract

The utility model relates to a wet-type double-shaft stirrer. The wet-type double-shaft stirrer specifically comprises a rack, a shell, stirring shafts, a transmission system, a power system, a cover plate and a spraying system, the rack plays a supporting role; the shell comprises a lower machine shell, a left supporting end plate and a right supporting end plate and is used for containing stirred materials, and a discharging opening is formed in the lower machine shell; the stirring shaft comprises a tail shaft, a paddle shaft and a driving shaft and is used for mixing and stirring materials; the transmission system comprises a driving gear, a driven gear, a gear housing and a coupler and is used for transmitting power; the cover plate comprises a left cover plate, a middle cover and a right cover plate and plays a sealing role. A humidity sensor is fixedly connected to the lower surface of the middle cover and used for monitoring the humidity in the shell. The spraying system comprises a four-way joint, a valve, an elbow, a pipeline, a water storage device and an atomizer; materials enter the shell from the feeding port of the right cover plate, and after stirring is completed, the materials are discharged from the discharging port of the lower machine shell in the shell. The wear-resistant stirring device is good in wear resistance and high in stirring efficiency, and the humidity in the shell can be monitored during stirring.

Description

Technical Field

[0001] The present application relates to the technical field of mixers, and particularly to a wet double-shaft mixer. Background Art

[0002] At present, a double-shaft mixer utilizes the synchronous rotation of two symmetrically arranged mixing shafts to add water and stir while conveying powdery materials such as dry ash, uniformly humidifying the dry ash powdery materials, achieving the purpose of preventing the humidified materials from emitting dry ash and not leaking water droplets, thereby facilitating the loading and transportation of the humidified dry ash or transferring it to other conveying equipment. It is mainly applicable to occasions such as the humidification and loading of fly ash or similar materials in industries such as thermal power plants and mines.

[0003] The utility model patent "A Double-Shaft Mixer" with the publication number "CN108748683A" includes a box body, a support frame, support feet, a rotating shaft, a first mixing device, a second mixing device, a motor, a motor and a propeller. This patent adopts two sets of mixing devices, improving the mixing effect of the mixer on powdery materials, thus ensuring the mixing quality. However, the housing of this patent is L-shaped. Compared with a U-shaped housing, the L-shaped housing is prone to material accumulation because it increases the internal corners and dead ends, reducing the mixing effect, thereby reducing the mixing efficiency and also increasing the difficulty of later cleaning; at the same time, this device does not have a spraying system, and water and materials need to enter from the feeding port, reducing the mixing efficiency and also causing insufficient mixing.

[0004] The utility model patent "A Double-Shaft Humidifying Mixer" with the publication number "CN108704567A" includes a box body, a driving motor, a first gear, a second gear, a feeding port, a discharging port, a rotating shaft, mixing blades, a water tank, a first conduit, a water pump, a second conduit, a shunt pipe, a spray head, a humidity sensor, a control panel, a buzzer, a single-chip microcomputer and a humidity comparator. This patent can detect the humidity inside the mixer in real time, improving the efficiency. However, the paddle blades on the mixing shaft of this patent are placed perpendicular to the axis of the mixing shaft, and there are no spiral blades installed on the rotating shaft, which will cause no thrust to be generated on the mixing blades to move the materials from the feeding port to the discharging port, reducing the mixing efficiency; there are no wear-resistant pieces installed on the mixing blades of this patent, and the mixing blades are easily worn, with a short service life.

[0005] To address the above-mentioned deficiencies of existing double-shaft mixers, the present utility model proposes a wet double-shaft mixer, which is used to solve the problems of low mixing efficiency and the inability to monitor the humidity inside the housing of the double-shaft mixer in real time. Powdery substances such as dry ash enter the interior of the housing through the feed inlet, and after adding water through the spraying system, they start to be mixed and stirred under the action of two stirring shafts. During the stirring process, the stirred materials will be pushed towards the discharge outlet by the spiral blades and angled paddle blades on the stirring shafts. At the same time, during this process, a humidity sensor will detect the humidity inside the mixer in real time. When the humidity is lower than the set value, it will remind to add water in time. After sufficient stirring, the stirred materials will be pushed by the stirring shafts to the discharge outlet. Summary of the Utility Model

[0006] To achieve the above object, the technical solution adopted by the present utility model is as follows.

[0007] A wet double-shaft mixer, the device includes a frame, a housing, stirring shafts, a transmission system, a power system, a cover plate and a spraying system; the housing is placed on the frame, the power system is placed on the right side of the housing, the stirring shafts are placed inside the housing and are connected to the power system through the transmission system, the cover plate is bolted to the housing, and the spraying system is placed on the cover plate; the frame plays a supporting role, and the power system is used to provide power.

[0008] The housing includes: a lower housing, a left support end plate and a right support end plate; the left support end plate and the right support end plate are respectively fixed on the left and right sides of the lower housing; a discharge outlet is opened on the left side of the bottom of the lower housing; two holes with a diameter of Φ200~Φ300 mm are opened on each of the left support end plate and the right support end plate.

[0009] The stirring shafts include: a tail shaft, a paddle shaft and a driving shaft; the paddle shaft is connected to the tail shaft and the driving shaft through bolts and is used to mix and stir materials; the tail shaft is supported by the left support end plate of the housing, and there are two stirring shafts; 12~30 paddle blades are evenly distributed on the paddle shaft, and its function is to mix and stir the powdery substances in the housing and push the powdery substances from the feed inlet towards the discharge outlet; the angle between the paddle blade and the vertical plane of the paddle shaft axis is 15°~23°; three wear-resistant pieces are fixed on the paddle blade and are evenly distributed at the upper end of the paddle blade; spiral blades are fixed on the driving shaft, and the spiral blades on the driving shafts of the two stirring shafts have opposite helix directions, so as to fully mix the materials in the lower housing; the spiral blades are in the form of solid spiral surfaces.

[0010] The transmission system includes: a driving gear, a driven gear, a gear housing and a coupling; the driving gear and the driven gear are respectively connected to the two stirring shafts, the gear housing is fixed to the right end of the driving gear and the driven gear and is used to cover the driving gear and the driven gear to play a safety protection role, and the coupling is used to connect the power system and the stirring shafts.

[0011] The cover plate comprises: a left cover plate, a middle cover plate and a right cover plate; the cover plate is fixed to the shell body by bolts, a peep hole is opened on the upper surface of the middle cover, a humidity sensor is fixed on the lower surface of the middle cover, and a feed port is opened on the upper right end of the right cover plate.

[0012] The spray system comprises: a cross, a valve, an elbow, a pipeline, a water storage device and an atomizer; there are two valves, which are respectively arranged at the left and right ends of the cross, the lower end of the cross is connected to the pipeline, there are two elbows, which are used to connect the valve and the pipeline, the ends of the pipeline are respectively connected to the water storage device, there are 1 to 3 atomizers, which are distributed on the left and right sides of the water storage device and the angle between them and the axis of the water storage device is 30 to 60 degrees; the atomizer is a centrifugal pressure nozzle type, and the spray system has 2 to 6 groups, which are used to spray water when stirring powdered substances.

[0013] The peephole is used to observe the mixing condition of materials and the operating state of the agitator during the stirring process, and the stirring process can be checked through the peephole.

[0014] The humidity sensor is used to detect the humidity in the shell. When the humidity in the shell is lower than the set value, the humidity sensor will release a signal to start the spray system in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of this application.

[0017] Figure 2 yes Figure 1 Schematic diagram of the rack structure.

[0018] Figure 3 yes Figure 1 Schematic diagram of the shell structure.

[0019] Figure 4 yes Figure 3 Schematic diagram of the lower casing structure.

[0020] Figure 5 yes Figure 1 Schematic diagram of the stirring shaft structure.

[0021] Figure 6 yes Figure 5 Schematic diagram of the blade shaft structure.

[0022] Figure 7 yesFigure 6 Schematic diagram of the paddle blade structure in

[0023] Figure 8 is Figure 5 Schematic diagram of the driving shaft structure in

[0024] Figure 9 is Figure 1 Schematic diagram of the transmission system structure in

[0025] Figure 10 is Figure 1 Schematic diagram of the cover plate structure in

[0026] Figure 11 is Figure 9 Schematic diagram of the middle cover structure in

[0027] Figure 12 is Figure 9 Schematic diagram of the right cover plate structure in

[0028] Figure 13 is Figure 1 Schematic diagram of the spraying system structure in

[0029] Explanation of reference numerals:

[0030] 1, frame; 2, housing; 2-1, lower housing; 2-1-1, discharge port; 2-2, left support end plate; 2-3, right support end plate; 3, stirring shaft; 3-1, tail shaft; 3-2, paddle shaft; 3-2-1, paddle blade; 3-2-2, wear-resistant plate; 3-3, driving shaft; 3-3-1, spiral blade; 4, transmission system; 4-1, driving gear; 4-2, driven gear; 4-3, gear housing; 4-4, coupling; 5, power system; 6, cover plate; 6-1, left cover plate; 6-2, middle cover; 6-2-1, viewing hole; 6-2-2, humidity sensor; 6-3, right cover plate; 6-3-1, feed inlet; 7, spraying system; 7-1, four-way joint; 7-2, valve; 7-3, elbow; 7-4, pipeline; 7-5, water storage device; 7-6, atomizer. Detailed implementation manners

[0031] In order to make the above objects, features and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0032] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present application.

[0033] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0034] In the present application, unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0035] In the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0036] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this article are only for the purpose of illustration and do not represent the only implementation.

[0037] A wet double-shaft mixer includes a frame 1, a housing 2, a mixing shaft 3, a transmission system 4, a power system 5, a cover plate 6 and a spraying system 7. The housing 2 is placed on the left side of the frame 1, the power system 5 is placed on the right side of the frame 1, the mixing shaft 3 is placed in the housing 2 and is connected to the power system 5 through the transmission system 4, the cover plate 6 is bolted to the housing 2, and the spraying system 7 is placed on the cover plate 6. The frame 1 plays a supporting role, and the power system 5 is used to provide power.

[0038] The housing 2 includes a lower housing 2-1, a left support end plate 2-2 and a right support end plate 2-3. The left support end plate 2-2 and the right support end plate 2-3 are respectively bolted and fixed to the left and right sides of the lower housing 2-1; a discharge port 2-1-1 is opened on the left side of the bottom of the lower housing 2-1. Two holes with a diameter of Φ250 mm are opened on each of the left support end plate 2-2 and the right support end plate 2-3. The housing 2 is designed with a U-shaped cross-section, which can promote more sufficient mixing of materials and provide a better mixing effect. At the same time, it can also reduce the cleaning difficulty in the later stage, because the U-shaped housing design reduces the internal corners and dead ends, reducing the accumulation of materials during the mixing process; at the same time, the U-shaped cross-section housing is more stable in structure, can better withstand the pressure and vibration during the mixing process, and extends the service life of the equipment.

[0039] The stirring shaft 3 includes a tail shaft 3-1, a blade shaft 3-2, and a driving shaft 3-3. The blade shaft 3-2 is connected to the tail shaft 3-1 and the driving shaft 3-3 by bolts and is used for mixing and stirring materials. The tail shaft 3-1 is supported by the left support end plate 2-2 of the housing 2, and the driving shaft 3-3 is supported by the right support end plate 2-3 of the housing 2. There are two stirring shafts 3. The stirring shaft 3 is divided into three parts, and only 20 blade vanes 3-2-1 are evenly distributed on the blade shaft 3-2. Compared with the traditional mixer in which stirring blades are installed on the entire stirring shaft, this installation method can reduce the wear degree of the blade vanes 3-2-1 and reduce the dust entering the driving gear 4-1 and the driven gear 4-2, thereby prolonging the service life of the transmission components. The 20 blade vanes 3-2-1 evenly distributed on the blade shaft 3-2 are used to mix and stir the powdery substances in the housing 2. The included angle between the blade vane 3-2-1 and the vertical plane of the axis of the blade shaft 3-2 is 18°. During the stirring process, it can make the powdery materials form a material flow and push the powdery substances towards the discharge port 2-1-1. Three wear-resistant pieces 3-2-2 are fixed on the blade vane 3-2-1 and are evenly distributed at the upper end of the blade vane 3-2-1. The wear-resistant pieces 3-2-2 improve the wear resistance of the blade vane 3-2-1 and extend the service life of the blade vane 3-2-1. A spiral blade 3-3-1 is fixed on the driving shaft 3-3. The spiral blades 3-3-1 on the driving shafts 3-3 of the two stirring shafts 3 have opposite helix directions, so that the materials in the lower housing 2-1 can be fully mixed. The spiral blade 3-3-1 is in the form of a solid spiral surface. This structure can prevent the spiral blade from sticking to the materials when stirring and conveying viscous materials, which is not only convenient for later cleaning but also improves the stirring quality.

[0040] The transmission system 4 includes a driving gear 4-1, a driven gear 4-2, a gear housing 4-3, and a coupling 4-4. The driving gear 4-1 and the driven gear 4-2 are respectively connected to the two stirring shafts 3. The gear housing 4-3 is fixed to the right ends of the driving gear 4-1 and the driven gear 4-2 and is used to cover the driving gear 4-1 and the driven gear 4-2 to play a safety protection role. The coupling 4-4 is used to connect the power system 5 and the stirring shaft 3.

[0041] The cover plate 6 includes a left cover plate 6-1, a middle cover plate 6-2 and a right cover plate 6-3. The cover plate 6 is fixed to the shell 2 with bolts. A peephole 6-2-1 is provided on the upper surface of the middle cover 6-2, a humidity sensor 6-2-2 is fixed on the lower surface of the middle cover 6-2, and a feed port 6-3-1 is provided on the upper right end of the right cover plate 6-3. The peephole 6-2-1 is used to observe the mixing of materials and the operating status of the agitator during the stirring process. The stirring process can be checked through the peephole 6-2-1 to ensure that the materials are fully mixed and no abnormalities occur, thereby improving production efficiency and quality. The humidity sensor 6-2-2 is used to detect the humidity in the shell 2. When the humidity in the shell 2 is lower than the set value, the humidity sensor 6-2-2 will release a signal to turn on the spray system 7 in time.

[0042] The spray system 7 includes a cross 7-1, a valve 7-2, an elbow 7-3, a pipe 7-4, a water storage device 7-5 and an atomizer 7-6. There are two valves 7-2, which are respectively placed at the left and right ends of the cross 7-1. The lower end of the cross 7-1 is connected to the pipe 7-4. There are two elbows 7-3, which are used to connect the valve 7-2 and the pipe 7-4. The ends of the pipe 7-4 are respectively connected to the water storage device 7-5. There are two atomizers 7-6, which are distributed on the left and right sides of the water storage device 7-5 and the angle between them and the axis of the water storage device 7-5 is 45°; the atomizer 7-6 is a centrifugal pressure nozzle type. Compared with the traditional atomizer, the atomizer 7-6 has a stronger spraying ability and a larger atomization angle, and the atomization effect is better. The spray system 7 has 4 groups, which are used to spray water when stirring powdered substances. When mixing powdery materials such as dry ash, the spray system 7 can add water without causing dust to fly around and cause environmental pollution. In particular, water can be added flexibly according to the humidity conditions in the mixer detected by the humidity sensor 6-2-2. Compared with other types of mixers, the mixing efficiency and mixing quality are higher, and it is more environmentally friendly. At the same time, the spray system also facilitates the cleaning of the mixer at a later time.

[0043] The contents explained in the above embodiments should be understood as these embodiments are only used to more clearly illustrate the present invention, and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art fall within the scope defined by the claims attached to this application.

Claims

1. A wet twin-shaft mixer, characterized in that: It comprises a frame (1), a shell (2), a stirring shaft (3), a transmission system (4), a power system (5), a cover plate (6) and a spray system (7); the shell (2) is placed on the frame (1), the power system (5) is placed on the right side of the shell (2), the stirring shaft (3) is placed in the shell (2) and is connected to the power system (5) through the transmission system (4), the cover plate (6) is connected to the shell (2) by bolts, and the spray system (7) is placed on the cover plate (6); the frame (1) plays a supporting role, and the power system (5) is used to provide power.

2. A wet twin-shaft mixer according to claim 1, characterized in that: The housing (2) comprises: a lower casing (2-1), a left supporting end plate (2-2) and a right supporting end plate (2-3); the left supporting end plate (2-2) and the right supporting end plate (2-3) are respectively fixed to the left and right sides of the lower casing (2-1); a discharge port (2-1-1) is opened on the left side of the bottom of the lower casing (2-1); and two holes of Φ200 to Φ300 mm are opened on the left supporting end plate (2-2) and the right supporting end plate (2-3).

3. A wet type twin-shaft mixer according to claim 2, characterized in that: The stirring shaft (3) comprises: a tail shaft (3-1), a paddle shaft (3-2) and a driving shaft (3-3); the paddle shaft (3-2) is connected to the tail shaft (3-1) and the driving shaft (3-3) by bolts and is used to mix and stir materials; the tail shaft (3-1) is supported by the left supporting end plate (2-2) of the shell (2), and there are two stirring shafts (3); 12 to 30 paddle blades (3-2-1) are evenly distributed on the paddle shaft (3-2), and their function is to mix and stir the powdery material in the shell (2) and to discharge the powdery material from the feed inlet (6-3-1) to the discharge outlet (2-1- 1) direction pushing; the angle between the paddle blade (3-2-1) and the vertical plane of the axis of the paddle shaft (3-2) is 15°~23°; three wear-resistant sheets (3-2-2) are fixed on the paddle blade (3-2-1) and are evenly distributed on the upper end of the paddle blade (3-2-1); a spiral blade (3-3-1) is fixed on the driving shaft (3-3), and the spiral blades (3-3-1) on the driving shafts (3-3) of the two stirring shafts (3) have opposite rotation directions, so that the materials in the lower casing (2-1) can be fully mixed; the spiral blade (3-3-1) is in the form of a solid spiral surface.

4. A wet type twin-shaft mixer according to claim 3, characterized in that: The transmission system (4) comprises: a driving gear (4-1), a driven gear (4-2), a gear cover (4-3) and a coupling (4-4); the driving gear (4-1) and the driven gear (4-2) are respectively connected to two stirring shafts (3); the gear cover (4-3) is fixed to the right ends of the driving gear (4-1) and the driven gear (4-2) and is used to cover the driving gear (4-1) and the driven gear (4-2) to provide safety protection; the coupling (4-4) is used to connect the power system (5) and the stirring shaft (3).

5. A wet type twin-shaft mixer according to claim 4, characterized in that: The cover plate (6) comprises: a left cover plate (6-1), a middle cover (6-2) and a right cover plate (6-3); the cover plate (6) is fixed to the housing (2) by bolts, a peephole (6-2-1) is provided on the upper surface of the middle cover (6-2), a humidity sensor (6-2-2) is fixed on the lower surface of the middle cover (6-2), and a feed port (6-3-1) is provided on the upper right end of the right cover plate (6-3).

6. A wet twin-shaft mixer according to claim 5, characterized in that: The spray system (7) comprises: a four-way valve (7-1), a valve (7-2), an elbow (7-3), a pipeline (7-4), a water storage device (7-5) and an atomizer (7-6); there are two valves (7-2), which are respectively arranged at the left and right ends of the four-way valve (7-1); the lower end of the four-way valve (7-1) is connected to the pipeline (7-4); there are two elbows (7-3), which are used to connect the valves (7-2) and the pipeline (7-4); the ends of the pipeline (7-4) are respectively connected to the water storage device (7-5); there are 1 to 3 atomizers (7-6), which are distributed on the left and right sides of the water storage device (7-5) and are at an angle of 30 to 60 degrees with the axis of the water storage device (7-5); the atomizer (7-6) is a centrifugal pressure nozzle type; the spray system (7) has 2 to 6 groups, which are used to spray water when stirring powdery substances.

7. A wet twin-shaft mixer according to claim 6, characterized in that: The peephole (6-2-1) is used to observe the mixing condition of materials and the operating state of the agitator during the stirring process, and the stirring process can be checked through the peephole (6-2-1).

8. A wet twin-shaft mixer according to claim 7, characterized in that: The humidity sensor (6-2-2) is used to detect the humidity in the shell (2); when the humidity in the shell (2) is lower than a set value, the humidity sensor (6-2-2) will release a signal to promptly start the spray system (7).

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