Double-shaft stirring equipment with automatic scraping function
By designing a linear drive assembly, scraping wall assembly and pushing plate combination structure with automatic scraping function in a dual-axis mixing equipment, the problems of uneven mixing force distribution and difficult to clean up the residual of viscous materials are solved, and efficient material mixing and Automatic cleaning significantly improves the working efficiency of the equipment.
Patent Information
- Application Number
- CN202411820364.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-02-14
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing two-shaft mixer mixer is unevenly distributed during the stirring process, especially the stirring effect is weak in the area above the stirring shaft, and the materials are prone to stick to each other when dealing with sticky materials, resulting in a decrease in the mixing efficiency, and there are many residues and it is difficult to clean, which affects the impact of Equipment efficiency.
A dual-axis stirring device with automatic scraping function is designed, adopting a combined structure of linear drive assembly, scraping the material adhered to the side wall of the shell by moving the scraping assembly back and forth, pushing the material. The plate and the scraping wall assembly work together to completely discharge the materials in the shell, realizing automatic cleaning and discharging.
It effectively avoids the decline in working performance caused by adhesion accumulation of materials, reduces material residues, reduces energy consumption and mechanical wear, significantly improves mixing efficiency and overall work efficiency of equipment, and saves labor costs.
Smart Images
Figure CN119425482A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of stirring equipment, and in particular to a double-shaft stirring equipment with an automatic scraping function. Background Art
[0002] As a widely used mixing and stirring equipment, the core components of the double-shaft mixing machine include key components such as the casing, the screw shaft assembly and the motor device. With its compact structure, high mixing efficiency, excellent mixing effect and technical characteristics such as support for continuous production, it has shown significant advantages in many fields such as chemical industry, food processing, building materials and fertilizer manufacturing. However, during the operation of the existing double-shaft mixing and stirring machine, the limitations of its structural design lead to uneven distribution of stirring forces in various areas inside the shell, especially in the area above the stirring shaft, where the stirring and mixing effect is relatively weak. When handling materials with high viscosity, these materials tend to adhere to the middle and upper part of the shell side wall, thereby hindering the normal flow of materials, reducing the mixing efficiency, and may have an adverse effect on the energy consumption, mechanical wear rate and uniformity of material mixing of the equipment. In addition, after the mixing work is completed, the existing screw shaft rotation mechanism is difficult to ensure that the materials in the shell are completely discharged, and there are a lot of residual materials, which usually require manual intervention for cleaning, which not only increases the labor cost, but also the materials remain in the gap between the screw shaft assembly and the shell, which is difficult to clean. The manual cleaning process is time-consuming and labor-intensive, which in turn affects the overall work efficiency of the double-shaft mixing and stirring machine. Summary of the invention
[0003] In order to address the deficiencies in the prior art, the present invention provides a twin-shaft stirring device with an automatic scraping function, which can automatically and effectively clean the material adhered to the upper and middle part of the shell side wall during the mixing process to avoid adverse effects on the working performance of the twin-shaft stirring device; at the same time, after the twin-shaft stirring device completes the mixing work, it can automatically and thoroughly discharge the material in the shell to reduce material loss; the above-mentioned cleaning work does not require manual operation, saves time and effort, and is efficient and fast.
[0004] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:
[0005] A double-shaft mixer with an automatic scraping function comprises a housing, two stirring shafts are rotatably fixed in the housing, spiral blades are fixed on the stirring shafts, and a discharge port is provided on the lower side of the rear of the housing; the double-shaft mixer further comprises:
[0006] A linear drive assembly includes two threaded shafts and a motor device; the two threaded shafts extend forward and backward and are distributed on both sides of the housing, and both ends of the threaded shafts are rotatably connected to the housing; the motor device is transmission-connected to the two threaded shafts;
[0007] The wall scraping assembly comprises a crossbeam and two scrapers supported and fixed by the crossbeam; two threaded sleeves are fixed on the crossbeam, and the two threaded sleeves are respectively threadedly matched with two threaded shafts; the two scrapers are respectively attached to the two side walls of the shell and extend into the shell;
[0008] The push plate has a main body located inside the shell, a hollow area is opened on the push plate, two sliding sleeves are fixed on the push plate, the two sliding sleeves are respectively sleeved on two threaded shafts and located on the front side of the threaded sleeves, and a locking mechanism is provided between the push plate and the scraper assembly for locking the two together.
[0009] In a preferred embodiment, a synchronous wheel is fixed to each end of the two threaded shafts in the same direction, and the two synchronous wheels are connected by a synchronous belt transmission; a driven wheel is fixed to one of the threaded shafts; the motor device is provided with an output wheel, and the output wheel is connected to the driven wheel by a transmission belt transmission;
[0010] Furthermore, the motor device, the two synchronous wheels and the driven wheel are all located outside the front end of the shell, and a protective cover is fixed on the shell to provide protection for the motor device, the two synchronous wheels and the driven wheel.
[0011] In a preferred embodiment, the front end and the rear end of the scraper are respectively provided with cutting edges to improve the scraping efficiency of the adhered materials.
[0012] In a preferred embodiment, a guide rod extending forward and backward is fixed on each side of the shell, and two support arms are fixed on the crossbeam. The two support arms are respectively located on both sides of the outside of the shell, and guide holes are provided on the support arms to slide with the corresponding guide rods.
[0013] In a preferred embodiment, the locking mechanism includes two horizontally extending lateral push rods, a vertically extending vertical push rod and a vertically extending threaded push rod;
[0014] The transverse push rods are slidably fixed on the push plate, the ends of the two transverse push rods close to each other are respectively fixed with top blocks, the ends of the two transverse push rods far away are respectively fixed with a plurality of locking pins distributed up and down, and the two scrapers are provided with locking holes corresponding to the locking pins;
[0015] The vertical push rod is slidably fixed on the push plate, and a wedge block is fixed on the vertical push rod. The two opposite side surfaces of the wedge block are inclined surfaces, and the two inclined surfaces are in contact with the two top blocks respectively;
[0016] The threaded push rod is threadably matched with the threaded hole provided on the crossbeam, the upper end of the threaded push rod is connected with a driving device for driving the threaded push rod to rotate, and the lower end of the threaded push rod can abut against the upper end of the vertical push rod;
[0017] The push plate is fixed with a first guide sleeve matched with the locking pin, a second guide sleeve matched with the middle and upper part of the vertical push rod, and an elastic component for driving the two horizontal push rods to approach each other;
[0018] Furthermore, the driving device is a manual driving device or an automatic driving device.
[0019] In a preferred embodiment, a feeding port is opened at the lowest point of the lower end of the push plate, and a blocking plate is provided on the rear side of the feeding port, and the upper end of the blocking plate is rotatably connected to the push plate; when the push plate moves forward, the blocking plate is driven by the material to rotate backward, and when the push plate moves backward, the blocking plate is driven by the material to block the feeding port.
[0020] Compared with the prior art, the double-shaft mixer has the following beneficial technical effects:
[0021] When the twin-shaft mixer of the present invention performs mixing operations on ordinary materials, the structure of the scraper assembly and the push plate will not constitute a substantial hindrance to the flow of materials inside the shell. Therefore, the twin-shaft mixer is suitable for mixing operations of ordinary materials and successfully inherits the technical advantages of traditional twin-shaft mixers in mixing efficiency and mixing effect. For the processing of materials with high viscosity, the twin-shaft mixer makes the scraper assembly move back and forth, and uses the scrapers on both sides to effectively scrape off the materials adhered to the middle and upper parts of the two side walls of the shell, thereby avoiding the degradation of working performance due to the accumulation of adhesion of materials. In the discharge stage, the scraper assembly and the push plate work together and move from front to back, which can not only completely scrape off the residual materials on the inner wall of the shell, but also effectively push the materials in the shell to move backward to the discharge port. This greatly reduces or even completely avoids the residue of materials in the shell, effectively reduces material loss, significantly saves labor costs, and significantly improves the overall work efficiency of the twin-shaft mixer. In addition, the layout and coordination design of the linear drive assembly, scraper assembly and push plate in this twin-shaft mixer are ingenious and reasonable, achieving high component utilization without significantly increasing the overall volume of the equipment, making the overall structure of the twin-shaft mixer more compact, easier to implement and more economical to manufacture, demonstrating significant structural optimization and innovation advantages. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a schematic diagram of the overall structure of the twin-shaft mixer.
[0023] Figure 2 This is a schematic diagram of the overall structure of the twin-shaft mixer in another direction.
[0024] Figure 3 This is a schematic diagram of the structure of the twin-shaft mixer after partial sectioning.
[0025] Figure 4 It is a schematic diagram of the matching structure between the linear drive component and the housing.
[0026] Figure 5 It is a schematic diagram of the structure of the wall scraper component.
[0027] Figure 6 It is a schematic diagram of the structure of the wall scraper assembly in another direction.
[0028] Figure 7 It is a schematic diagram of the working state of the wall scraper assembly when it moves back and forth.
[0029] Figure 8 It is a structural schematic diagram of the push plate.
[0030] Fig. 9 It is a schematic diagram of the structure of the push plate in another direction.
[0031] Fig.10 It is a schematic diagram of the cooperation among the push plate, housing and linear drive assembly.
[0032] Fig.11 It is a schematic diagram of the coordination of the push plate, scraper assembly, housing and linear drive assembly.
[0033] Fig.12 It is a schematic diagram of the working state when the scraper assembly and the push plate move from front to back.
[0034] Fig.13 It is a schematic diagram of the cooperation between the push plate and the scraper assembly in the locked state.
[0035] Fig.14 It is a schematic diagram of the cooperation between the push plate and the scraper assembly in the unlocked state.
[0036] Fig.15 This is a schematic diagram of the structure when a material passing port and a blocking plate are set at the lower end of the push plate.
[0037] Fig.16 This is a schematic diagram of the coordination when the blocking plate blocks the material outlet.
[0038] Fig.17 It is a schematic diagram of the coordination when the blocking plate does not block the material passage.
[0039] In the figure, 1, frame, 2, shell, 3, threaded shaft, 4, stirring shaft, 5, spiral blade, 6, push plate, 7, scraper, 8, protective cover, 9, beam, 10, power unit, 11, guide rod, 12, synchronous belt, 13, passive wheel, 14, transmission belt, 15, output wheel, 16, motor device, 17, synchronous wheel, 18, discharge port, 19, locking hole, 20, blade, 21, threaded hole, 22, threaded push rod, 23, hand wheel, 24, threaded sleeve, 25, support arm, 26, guide hole, 27, hollow area, 28, push block, 29, sliding sleeve, 30, wedge block, 31, vertical push rod, 32, second guide sleeve, 33, elastic component, 34, horizontal push rod, 35, first guide sleeve, 36, locking pin, 37, blocking plate, 38, feed port. DETAILED DESCRIPTION
[0040] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0041] See also Figure 1 , Figure 2 , Figure 3 As shown, this embodiment shows a twin-shaft mixer with automatic scraping function, which includes a shell 2, which extends from front to back in a groove shape, and two stirring shafts 4 extending forward and backward are rotatably fixed in the shell 2, and each of the two stirring shafts 4 is fixed with evenly distributed spiral blades 5. A power device 10 for driving the stirring shafts 4 to rotate is installed at the front end of the shell 2, and a discharge port 18 is opened on the lower side of the rear part of the shell 2; the above structure is the core component of the existing twin-shaft mixer, and can be flexibly adjusted with reference to the commonly used designs in the prior art during implementation, and the specific working principle of realizing the stirring function will not be repeated here.
[0042] At the same time, the double-shaft mixer also includes a linear drive component, a wall scraper component and a push plate;
[0043] See also Figure 1-Figure 4 As shown, the linear drive assembly includes two threaded shafts 3 and a motor device 16. The two threaded shafts 3 extend forward and backward and are distributed on both sides of the housing 2. Both ends of the threaded shafts 3 are rotatably connected to the housing 2, so that the threaded shafts 3 can rotate around their own central axis; the motor device 16 is fixed to the outside of one end of the housing 2, and the motor device 16 is transmission-connected to the two threaded shafts 3. The motor device 16 can drive and regulate the rotation of the two threaded shafts 3;
[0044] See also Figure 5 , Figure 6 , Figure 7As shown, the wall scraper assembly includes a crossbeam 9 and two scrapers 7 supported and fixed by the crossbeam 9; two threaded sleeves 24 with internal threads are fixed on the crossbeam 9, and the two threaded sleeves 24 are respectively sleeved on the two threaded shafts 3 and threadedly matched, and the threaded sleeves 24 and the corresponding threaded shafts 3 constitute a screw nut transmission mechanism, thereby enabling the wall scraper assembly to move forward and backward under the drive of the linear drive assembly; the two scrapers 7 are respectively attached to the two side walls of the shell 2 and extend downward into the shell 2. In the process of the wall scraper assembly moving forward and backward, the two scrapers 7 can respectively scrape off the materials adhered to the middle and upper parts of the two side walls of the shell 2;
[0045] See also Figure 8-11 As shown, the main body of the push plate 6 is located inside the shell 2, and the main body of the push plate 6 is consistent with the cross-sectional shape of the inner cavity of the shell 2. The push plate 6 is provided with a hollow area 27 for spatially avoiding the spiral shaft and the spiral blade 5. Two sliding sleeves 29 are fixed on the push plate 6. The two sliding sleeves 29 are respectively sleeved on the two threaded shafts 3 and are located on the front side of the threaded sleeves. The sliding sleeves 29 are slidably matched with the corresponding threaded shafts 3. A locking mechanism for locking and fixing the push plate 6 and the scraper assembly is provided between the push plate 6 and the wall scraper assembly. Thus, as shown in FIG. Fig.12 As shown, when the push plate 6 is locked with the scraper assembly, the push plate 6 will move synchronously with the scraper assembly; the push plate 6 moves forward with the scraper assembly and can be abutted against the front end wall of the shell 2. When the push plate 6 moves backward with the scraper assembly, the push plate 6 cooperates with the two scrapers 7 to scrape off the material adhered to the inner wall of the shell 2 and push the material in the shell 2 backward to the discharge port.
[0046] The working principle and technical advantages of this double-shaft mixer are:
[0047] like Figure 1 , Figure 2 As shown, when ordinary materials are mixed, the two scrapers 7 are respectively attached to the two side walls of the shell 2, and the pusher plate 6 is attached to the front end wall of the shell 2, so that the scraper assembly and the pusher plate 6 will not hinder the flow of materials inside the shell 2. Therefore, this double-shaft mixer is suitable for mixing ordinary materials and inherits the technical advantages of the previous double-shaft mixer in terms of mixing efficiency and mixing effect.
[0048] like Figure 7 As shown, when the material is highly viscous, it is easy to adhere to and accumulate in the middle and upper part of the side wall of the shell 2. At this time, the linear drive assembly can be used to drive the scraper assembly to move back and forth, and the two scrapers 7 can be used to scrape off the material adhered to the middle and upper part of the two side walls of the shell 2, so as to avoid the material from adhering to and accumulating in the middle and upper part of the side wall of the shell 2 and reducing the working performance of the twin-shaft mixer. In the above process, the push plate 6 always sticks to the front end wall of the shell 2, does not move with the scraper assembly, and does not hinder the reciprocating movement of the scraper assembly.
[0049] like Fig.12 As shown, after the materials are mixed, the continued rotation of the spiral blade 5 can drive the materials in the shell 2 to continue to move backwards and finally be discharged from the discharge port 18. However, there will still be a certain amount of material residue on the bottom and side walls of the shell 2. At this time, the locking mechanism can be used to lock and fix the push plate 6 and the scraper assembly, and the linear drive assembly can be used to drive the scraper assembly and the push plate 6 to move from front to back. During this process, the push plate 6 and the two scrapers 7 can cooperate to scrape off the residual material adhering to the inner wall of the shell 2, and push the material in the shell 2 to move backwards, and finally the material is discharged from the discharge port, thereby reducing or even avoiding the material residue in the shell 2, reducing material loss, saving labor costs, and improving comprehensive operating efficiency.
[0050] In addition, in the present twin-shaft mixer, the layout and coordination design of the linear drive assembly, the scraper assembly and the push plate are ingenious and reasonable, the component utilization rate is extremely high, and the overall volume of the twin-shaft mixer is not significantly increased, so that the overall structure of the twin-shaft mixer is simplified, and it has the advantages of compact structure, easy implementation and low cost.
[0051] Specifically, the motor device is composed of a motor capable of bidirectional output and a reduction mechanism, which is a commonly used drive structure in the prior art. Based on the existing mature electromechanical control technology, by regulating the working state of the motor device, the moving direction, moving speed and stop position of the scraper assembly can be accurately adjusted, thereby ensuring that when the twin-shaft mixer is implemented in combination with the existing technology, an ideal automation effect can be obtained to meet the needs of modern industry.
[0052] Further, see Figure 4 As shown, a synchronous wheel 17 is fixed to each end of the two threaded shafts 3 located in the same direction, and the two synchronous wheels 17 are connected by a synchronous belt 12; a driven wheel 13 is fixed to one of the threaded shafts 3; the motor device 16 is provided with an output wheel 15, and the output wheel 15 is connected to the driven wheel 13 by a transmission belt 14;
[0053] Further, see Figure 2 , Figure 4 As shown, the motor device 16 , the two synchronous wheels 17 and the driven wheel 13 are all located outside the front end of the housing 2 , and a protective cover 8 is fixed on the housing 2 to provide protection for the motor device 16 , the two synchronous wheels 17 and the driven wheel 13 .
[0054] Further, see Figure 5 , Figure 6 As shown, the front and rear ends of the scraper 7 are respectively provided with blades 20 to improve the scraping efficiency of the adhered materials.
[0055] Further, see Figure 1 , Figure 5 , Figure 7 As shown, a guide rod 11 extending forward and backward is fixed to each side of the shell 2, and the guide rod 11 is located below the corresponding threaded shaft 3; two downwardly extending support arms 25 are fixed to the crossbeam 9, and the two support arms 25 are respectively located on both sides of the outside of the shell 2, and guide holes 26 that slide with the corresponding guide rod 11 are opened on the support arms 25; thus, the crossbeam 9 can be supported by the two threaded shafts 3 and the two guide rods 11, and the force is more stable and balanced.
[0056] In the present double-shaft mixer, the purpose of the locking mechanism is to lock and fix the push plate and the scraper assembly so that the push plate and the scraper assembly can move synchronously. Based on the above setting intention and referring to the prior art, the locking mechanism has a variety of implementation modes to choose from. For example, the locking mechanism can be implemented based on the matching structure of the locking pin and the locking hole. In order to improve the stability of the push plate and the scraper assembly after being locked and fixed and the balance of the forces between the two, the push plate and the scraper assembly should be fixedly connected at multiple points. When the locking mechanism is implemented using the commonly used structure in the prior art, the adjustment operation of the locking state of the push plate and the scraper assembly is relatively cumbersome, time-consuming and labor-intensive; therefore, the locking mechanism is more preferably implemented using the following structure:
[0057] See also Figure 5 , Figure 6 , Figure 8 , Fig. 9 As shown, the locking mechanism includes two horizontally extending lateral push rods 34, a vertically extending vertical push rod 31, and a vertically extending threaded push rod 22;
[0058] The transverse push rods 34 are slidably fixed on the push plate 6, the central axes of the two transverse push rods 34 coincide, the ends of the two transverse push rods 34 close to each other are respectively fixed with top blocks 28, and the ends of the two transverse push rods 34 far away are respectively fixed with a plurality of locking pins 36 distributed up and down, and the two scrapers 7 are provided with locking holes 19 corresponding to the locking pins 36;
[0059] The vertical push rod 31 is slidably fixed on the push plate 6, and a wedge block 30 is fixed on the vertical push rod 31. The two opposite side surfaces of the wedge block 30 are inclined surfaces, and the two inclined surfaces are in contact with the two top blocks 28 respectively.
[0060] The threaded push rod 22 is threadably matched with the threaded hole 21 provided on the cross beam 9. The upper end of the threaded push rod 22 is connected to a driving device for driving the threaded push rod 22 to rotate. The lower end of the threaded push rod 22 can abut against the upper end of the vertical push rod 31.
[0061] The push plate 6 is fixed with a first guide sleeve 35 matched with a locking pin 36, a second guide sleeve 32 matched with the middle and upper part of the vertical push rod 31, and an elastic component 33 for driving two lateral push rods 34 to approach each other;
[0062] like Fig.13 As shown, when the threaded push rod 22 rotates and moves downward, the threaded push rod 22 will extend into the second guide sleeve 32 and push the vertical push rod 31 downward, the wedge block 30 drives the two push blocks 28 away, and the two transverse push rods 34 drive the locking pins 36 to insert into the corresponding locking holes 19. After that, the push plate 6 and the scraper assembly are locked at multiple positions, thereby achieving a stable connection and stable synchronous movement;
[0063] like Fig.14 As shown, when the threaded push rod 22 rotates upward, it will move out of the second guide sleeve 32, and the elastic component 33 drives the two lateral push rods 34 to approach each other, so that the locking pin 36 moves out of the locking hole 19, thereby releasing the locking effect of the push plate 6 and the scraper assembly. After that, the push plate 6 no longer moves synchronously with the scraper assembly.
[0064] Furthermore, if Figure 5 , Figure 6 As shown, the driving device is a manual driving device such as a hand wheel 23, a handle, etc., and the threaded push rod 22 is driven by manpower to rotate and move, thereby the locking state of the push plate and the scraper assembly can be manually adjusted; or, the driving device is an automatic driving device such as an electric mechanism, a pneumatic mechanism, a hydraulic mechanism, etc., thereby the locking state of the push plate and the scraper assembly can be automatically adjusted.
[0065] Further, see Fig.15 , Fig.16 , Fig.17 As shown, a feeding port 38 is provided at the lowest point of the lower end of the push plate 6, and a blocking plate 37 is provided at the rear side of the feeding port 38, and the upper end of the blocking plate 37 is rotatably connected to the push plate 6; when the push plate 6 moves forward, the blocking plate 37 is driven by the material to rotate backward to allow the material to pass through the feeding port 38, and when the push plate 6 moves backward, the blocking plate 37 is driven by the material to block the feeding port 38 to prevent the material from passing through the feeding port 38; thereby, Fig.16 As shown, when the push plate 6 moves backward, the material port 38 is in a blocked state, and the material in the housing 2 can be pushed to move backward; Fig.17 As shown, when the push plate 6 moves forward, the residual material gathered at the lowest point of the shell 2 can pass through the material passing port 38 and will not move forward with the push plate 6; therefore, when discharging materials, the linear drive assembly can be used to drive the push plate 6 and the scraper assembly to reciprocate multiple times in the shell 2 to reduce the residual material in the shell 2.
Claims
1. A double-shaft mixer with automatic scraping function, comprising a housing, two stirring shafts are rotatably fixed in the housing, spiral blades are fixed on the stirring shafts, and a discharge port is opened on the lower side of the rear of the housing; characterized in that: The twin-shaft mixer also includes: A linear drive assembly includes two threaded shafts and a motor device; the two threaded shafts extend forward and backward and are distributed on both sides of the housing, and both ends of the threaded shafts are rotatably connected to the housing; the motor device is transmission-connected to the two threaded shafts; The wall scraping assembly comprises a crossbeam and two scrapers supported and fixed by the crossbeam; two threaded sleeves are fixed on the crossbeam, and the two threaded sleeves are respectively threadedly matched with two threaded shafts; the two scrapers are respectively attached to the two side walls of the shell and extend into the shell; The push plate has a main body located inside the shell, a hollow area is opened on the push plate, two sliding sleeves are fixed on the push plate, the two sliding sleeves are respectively sleeved on two threaded shafts and located on the front side of the threaded sleeves, and a locking mechanism is provided between the push plate and the scraper assembly for locking the two together.
2. The double-shaft mixer with automatic scraping function according to claim 1, characterized in that: A synchronous wheel is fixed to each end of the two threaded shafts in the same direction, and the two synchronous wheels are connected via a synchronous belt transmission; a driven wheel is fixed to one of the threaded shafts; the motor device is provided with an output wheel, and the output wheel is connected to the driven wheel via a transmission belt transmission.
3. The double-shaft mixer with automatic scraping function according to claim 2, characterized in that: The motor device, the two synchronous wheels and the driven wheel are all located outside the front end of the shell, and a protective cover for protecting the motor device, the two synchronous wheels and the driven wheel is fixed on the shell.
4. The double-shaft mixer with automatic scraping function according to claim 1, characterized in that: The front end and the rear end of the scraper are respectively provided with cutting edges.
5. The double-shaft mixer with automatic scraping function according to claim 1, characterized in that: A guide rod extending forward and backward is fixed on each of the two sides of the shell, and two support arms are fixed on the crossbeam. The two support arms are respectively located on the two sides of the shell exterior, and guide holes are provided on the support arms to slide with the corresponding guide rods.
6. The double-shaft mixer with automatic scraping function according to claim 1, characterized in that: The locking mechanism includes two horizontally extending lateral push rods, a vertically extending vertical push rod and a vertically extending threaded push rod; The transverse push rods are slidably fixed on the push plate, the ends of the two transverse push rods close to each other are respectively fixed with top blocks, the ends of the two transverse push rods far away are respectively fixed with a plurality of locking pins distributed up and down, and the two scrapers are provided with locking holes corresponding to the locking pins; The vertical push rod is slidably fixed on the push plate, and a wedge block is fixed on the vertical push rod. The two opposite side surfaces of the wedge block are inclined surfaces, and the two inclined surfaces are in contact with the two top blocks respectively; The threaded push rod is threadably matched with the threaded hole provided on the crossbeam, the upper end of the threaded push rod is connected with a driving device for driving the threaded push rod to rotate, and the lower end of the threaded push rod can abut against the upper end of the vertical push rod; The push plate is fixed with a first guide sleeve matched with a locking pin, a second guide sleeve matched with the middle and upper part of the vertical push rod, and an elastic component for driving the two horizontal push rods to approach each other.
7. The double-shaft mixer with automatic scraping function according to claim 6, characterized in that: The driving device is a manual driving device or an automatic driving device.
8. The double-shaft mixer with automatic scraping function according to claim 1, characterized in that: A feeding port is provided at the lowest point of the lower end of the push plate, and a blocking plate is provided on the rear side of the feeding port, and the upper end of the blocking plate is rotatably connected to the push plate; when the push plate moves forward, the blocking plate is driven by the material to rotate backward, and when the push plate moves backward, the blocking plate is driven by the material to block the feeding port.