A double shaft mixer

Abstract

The application relates to a double-shaft mixer and relates to the field of mixers. The double-shaft mixer comprises a machine body, a plurality of lining plates are arranged on the inner wall of the machine body, studs are fixedly connected to the lining plates, the studs penetrate through the side wall of the machine body, a fixed nut is threadedly connected to the end of each stud penetrating out of the machine body, elastic pads are arranged between the lining plates and the side wall of the machine body, and soundproof covers for covering the outer wall of the machine body are arranged on the two sides of the machine body. The double-shaft mixer can reduce the noise during operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of mixers, in particular to a double-shaft mixer. BACKGROUND

[0002] The double-shaft mixer is a device for stirring concrete mortar. When the mixer is loaded, the sand and cement are directly poured into the body through the hopper, and the concrete is stirred in the body by the rotation of the stirring blades. During the loading and stirring of the concrete, the sand will impact the inner wall of the body, resulting in a large noise during the operation of the double-shaft mixer, which seriously affects the working environment in the workshop. SUMMARY

[0003] In order to reduce the noise of the double-shaft mixer during operation and improve the working environment in the workshop, the present application provides a double-shaft mixer.

[0004] The double-shaft mixer provided by the present application adopts the following technical solution:

[0005] A double-shaft mixer comprises a body, a plurality of lining plates are arranged on the inner wall of the body, a stud is fixedly connected to each lining plate, the stud penetrates through the side wall of the body, and a fixing nut is threadedly connected to the end of the stud that penetrates out of the body. An elastic pad is arranged between the lining plate and the side wall of the body, and a soundproof cover is arranged on each side of the body to cover the outer wall of the body.

[0006] By arranging the elastic pad between the side plate and the side wall of the body, the impact force of the sand impacting the lining plate is buffered, and the noise generated by the vibration of the lining plate when impacted is reduced. The soundproof cover is arranged on both sides of the body to further reduce the spread of noise in the body to the outside, thereby alleviating the problem of high noise in the workshop and improving the working environment.

[0007] Optionally, the lining plate comprises a middle plate, wing plates are hingedly connected to both sides of the middle plate, the stud penetrates through the middle plate, and a pressing block for abutting against the middle plate is fixedly connected to the stud. A recess for positioning the elastic pad is formed in the wing plate, a pressing plate is fixedly connected to the pressing block, and an embedding groove for embedding the pressing plate is formed in each wing plate.

[0008] By adopting the technical scheme, when the operator replaces the elastic pad, the operator loosens the fixing nut, moves the pressing plate to make the pressing plate disengage from the embedding groove, turns over the pressing plate to release the limiting effect of the pressing plate on the wing plate, and finally turns over the wing plate to replace the elastic pad in the embedding groove of the wing plate. After the elastic pad is disassembled and installed, the operator resets the wing plate, reinserts the pressing plate into the embedding groove of the two wing plates, and finally tightens the fixing nut to complete the replacement of the elastic pad. In this way, it is convenient for the operator to replace the elastic pad.

[0009] Optionally, the soundproof cover comprises two edge plates fixedly connected to the outer wall of the machine body, a turnover plate hingedly connected between the two edge plates, a cylinder provided on the machine body for controlling the turnover of the turnover plate, a moving plate slidingly arranged on the side of the turnover plate away from the machine body, a control assembly provided on the turnover plate for controlling the sliding of the moving plate, and soundproof cotton fixedly connected to the turnover plate and the moving plate.

[0010] By adopting the technical scheme, when the soundproof cover is in the unfolded state, the cylinder drives the turnover plate to abut against the two edge plates, and the control assembly drives the moving plate to move away from the turnover plate, so that the turnover plate and the moving plate are unfolded and cover the side wall of the machine body. By arranging the soundproof cotton on the turnover plate and the moving plate, the noise in the machine body is reduced to prevent the noise from spreading outside, thereby achieving the noise reduction effect of the machine body.

[0011] Optionally, the control assembly comprises a gear rotatably connected to the turnover plate, a rack fixedly connected to the gear on the moving plate, a first sprocket coaxially fixedly connected to the gear, a rotating shaft fixedly connected to the turnover plate, wherein the rotating shaft and the hinge shaft of the turnover plate have the same central axis, a second sprocket rotatably connected to the rotating shaft, a third sprocket fixedly connected to the output shaft of a driving motor fixedly connected to the machine body, a fourth sprocket coaxially fixedly connected to the second sprocket, and a second chain wound between the first sprocket and the second sprocket.

[0012] By adopting the technical scheme, the operator starts the driving motor to drive the third sprocket to rotate, which drives the fourth sprocket and the second sprocket to synchronously rotate under the action of the second chain, and the first sprocket and the gear synchronously rotate under the transmission action of the first chain. Since the gear and the rack are engaged with each other, the moving plate slides on the turnover plate, so that the operator can control the moving plate to be folded or unfolded.

[0013] Optionally, spools are rotatably connected to the two sides of the moving plate, and guide rails for limiting the spools are fixedly connected to the side plate.

[0014] By adopting the technical scheme, when the turnover plate is turned to cover the machine body, the spool is aligned with the slide rail, the spool enters the slide rail when the moving plate slides, the slide rail guides and limits the spool, the slide rail limits the spool when the turnover plate and the moving plate are unfolded, the covering effect of the turnover plate and the moving plate on the machine body is improved, and the sound insulation effect of the turnover plate and the moving plate is improved.

[0015] Optionally, a supporting plate for stepping is hinged to the moving plate, a limiting plate is hinged to the machine body, a limiting groove for inserting the supporting plate is arranged on the limiting plate, and a locking assembly for limiting the turnover of the supporting plate is arranged on the supporting plate.

[0016] By adopting the technical scheme, when the turnover plate is turned to cover the machine body, the spool is aligned with the slide rail, the spool enters the slide rail when the moving plate slides, the slide rail guides and limits the spool, the slide rail limits the spool when the turnover plate and the moving plate are unfolded, the covering effect of the turnover plate and the moving plate on the machine body is improved, and the sound insulation effect of the turnover plate and the moving plate is improved.

[0017] Optionally, the locking assembly comprises a locking rod hinged to the supporting plate, the limiting plate and the moving plate are fixedly connected with a supporting plate, an insertion slot for inserting the locking rod is arranged on the supporting plate, an insertion sleeve is slidably arranged on the locking rod, a limiting hole for inserting the insertion sleeve is arranged on the supporting plate, the diameter of the limiting hole is greater than the slot width of the insertion slot, and a spring for pushing the insertion sleeve into the limiting hole is arranged on the locking rod.

[0018] By adopting the technical scheme, after the supporting plate is inserted into the limiting groove of the limiting plate, the operator moves the insertion sleeve to overcome the elastic force of the spring and moves away from the moving plate, the operator turns the locking rod to insert the locking rod into the insertion slot, then releases the insertion sleeve, and the insertion sleeve is inserted into the limiting hole under the elastic force of the spring, thereby fixing the positions of the supporting plate and the limiting plate or the moving plate.

[0019] Optionally, a locking nut is threadedly connected to the insertion sleeve, a sleeve coaxially fixedly connected with the locking nut for pushing the insertion sleeve is arranged on the locking nut, the spring is sleeved on the sleeve, one end of the spring abuts against the locking nut, and the other end of the spring abuts against the insertion sleeve.

[0020] By adopting the technical scheme, the operator turns the locking nut to make the locking nut abut against the insertion sleeve to limit the insertion sleeve from separating from the insertion slot, thereby reducing the situation that the insertion sleeve separates from the insertion slot and improving the connection stability between the supporting plate and the limiting plate or the moving plate.

[0021] Optionally, the machine body is rotatably connected with a stirring shaft, the stirring shaft is detachably and fixedly connected with stirring blades, and the stirring blades are detachably and fixedly connected with a guard plate.

[0022] By adopting the above technical scheme, the stirring blades and the turnover rod are detachably connected, and the guard plate is detachably and fixedly connected with the stirring blades, so that the stirring blades and the guard plate can be replaced individually, thereby reducing maintenance cost.

[0023] Optionally, the stirring shaft is provided with a plurality of installation grooves, the stirring blades are fixedly connected with a plug rod for being inserted into the installation grooves, the stirring blades are hingedly connected with a first hoop plate and a second hoop plate, the first hoop plate is hingedly connected with a screw sleeve, the second hoop plate is hingedly connected with a guide cylinder, a fixing bolt is inserted into the guide cylinder, and the fixing bolt is threadedly connected into the screw sleeve.

[0024] By adopting the above technical scheme, an operator inserts the plug rod into the installation grooves, then the operator turns the first hoop plate and the second hoop plate to make the stirring shaft located between the first hoop plate and the second hoop plate, and finally the operator rotates the fixing bolt to make the fixing bolt threadedly connected to the screw sleeve, thereby realizing the fixation between the first hoop plate and the second hoop plate and the detachable connection of the stirring blades on the stirring shaft. In addition, the first hoop plate and the second hoop plate hoop the stirring shaft, thereby reducing the abrasion of the stirring shaft caused by the impact of sand and stone on the stirring shaft during the stirring of the concrete.

[0025] In summary, the present application has at least one beneficial technical effect: the elastic pad buffers the impact force of sand and stone impacting the lining plate, reduces the noise generated by the vibration of the lining plate when impacted, sets the soundproof cover to cover the machine body, alleviates the problem of high noise in the workshop, and improves the working environment. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a whole structure schematic diagram of the embodiment of the present application.

[0027] Figure 2 is a structure schematic diagram of the embodiment of the present application for embodying the inside of the machine body.

[0028] Figure 3 is an exploded view of the embodiment of the present application for embodying the stirring blades.

[0029] Figure 4 is a structure schematic diagram of the embodiment of the present application for embodying the lining plate.

[0030] Figure 5 is a structure schematic diagram of the embodiment of the present application for embodying the lining plate.

[0031] Figure 6 is an exploded view of the embodiment of the present application for embodying the turnover plate and the moving plate.

[0032] Figure 7 It is an exploded view of the limiting plate used in the embodiment of the present application.

[0033] Figure 8 yes Figure 7 Enlarged schematic diagram of part A.

[0034] Figure 9 It is a structural diagram of the locking assembly used in an embodiment of the present application.

[0035] Explanation of reference numerals: 1. body; 11. end cover; 12. stirring shaft; 13. end plate; 14. side plate; 15. discharge port; 2. mounting groove; 21. stirring blade; 22. insert rod; 23. first hoop plate; 24. second hoop plate; 25. guide cylinder; 26. fixing bolt; 27. screw sleeve; 28. guard plate; 3. lining plate; 31. middle plate; 32. wing plate; 33. groove; 34. elastic pad; 35. stud; 36. pressure plate; 37. embedding groove; 38. fixing nut; 39. pressure block; 4. ridge plate; 41. flip plate; 43. cylinder; 44. moving Plate; 45. I-shaped pulley; 46. Guide rail; 47. Soundproof cover; 5. Control assembly; 51. Gear; 52. Rack; 53. First sprocket; 54. Rotating shaft; 55. Second sprocket; 56. First chain; 6. Drive shaft; 61. Drive motor; 62. Third sprocket; 63. Fourth sprocket; 64. Second chain; 7. Support plate; 71. Limit plate; 72. Limit groove; 8. Locking assembly; 81. Support plate; 82. Slot; 83. Locking rod; 84. Limit hole; 85. Insert; 86. Ring plate; 87. Locking nut; 88. Sleeve; 89. Spring. DETAILED DESCRIPTION

[0036] The following is combined with Figures 1-9 This application is described in further detail.

[0037] The present application discloses a double-shaft mixer. Figure 1 and Figure 2 The twin-shaft mixer includes a body 1, with an end cap 11 provided at the upper end of the body 1. Two horizontally arranged stirring shafts 12 are connected to the body 1. The two stirring shafts 12 are parallel to each other and spaced apart in the horizontal direction. The axial direction of the stirring shafts 12 is recorded as the length direction of the body 1. The two side walls of the body 1 provided along its own length direction are end plates 13. The two side walls of the body 1 provided along its own width direction are side plates 14. The side plates 14 correspond to the stirring shafts 12 one by one. Both side plates 14 are arc-shaped and share a central axis with the corresponding stirring shafts 12. The lower ends of the two side plates 14 extend to the lower end of the body 1, and a discharge port 15 for discharging materials is provided at the connection position of the two side plates 14.

[0038] like Figure 2 andFigure 3 The stirring shaft 12 is provided with a plurality of installation grooves 2 which are distributed spirally around the axis of the corresponding stirring shaft 12. The stirring shaft 12 is fixedly connected with a stirring blade 21 at a position corresponding to each installation groove 2. Each stirring blade 21 is fixedly connected with a plug rod 22 for insertion into the installation groove 2. The stirring blade 21 is hingedly connected with a first hoop plate 23 and a second hoop plate 24, and the first hoop plate 23 and the second hoop plate 24 are both arc-shaped. The first hoop plate 23 is hingedly connected with a plurality of screw sleeves 27 which are arranged at intervals along the axis of the first hoop plate 23. The second hoop plate 24 is hingedly connected with a plurality of guide cylinders 25, and each guide cylinder 25 is penetrated by a fixing bolt 26 which penetrates the guide cylinder 25 and is threadedly connected with the screw sleeve 27. Each stirring blade 21 is detachably fixedly connected with a guard plate 28 for stirring and turning the concrete through screws.

[0039] The stirring blade 21 is detachably fixedly connected with the stirring shaft 12, and the guard plate 28 is detachably fixedly connected with the stirring blade 21, which facilitates the replacement of the stirring blade 21 and the guard plate 28 by the operator. The first hoop plate 23 and the second hoop plate 24 cover the stirring shaft 12, which reduces the wear of the stirring shaft 12 caused by the impact of sand and stones during the stirring of the concrete.

[0040] As Figure 2 and Figure 4 A plurality of lining plates 3 are arranged on the inner walls of the end plate 13 and the side plate 14. Each lining plate 3 comprises a middle plate 31, two wing plates 32 hingedly connected to the two sides of the middle plate 31, and a recess 33 formed on one side of each wing plate 32 facing the side plate 14 or the end plate 13, and an elastic pad 34 arranged in the recess 33 for buffering the vibration of the lining plate 3. A stud 35 is slidably arranged through the middle plate 31, one end of the stud 35 is fixedly connected with a pressing block 39, the pressing block 39 is fixedly connected with a pressing plate 36, and an embedding groove 37 for inserting the pressing plate 36 is formed on one end of each wing plate 32 away from the elastic pad 34. The end of the stud 35 away from the pressing plate 36 penetrates through the corresponding side plate 14 or end plate 13, and a fixing nut 38 is threadedly connected with the end of the stud 35 penetrating through the side plate 14 or end plate 13. During the feeding or stirring of the concrete by the machine body 1, the sand and stones collide with the lining plate 3, and the impact force of the sand and stones colliding with the lining plate 3 is buffered by the elastic pad 34, thereby reducing the noise generated by the vibration of the lining plate 3.

[0041] As Figure 5 and Figure 6, the two side plates 14 are fixedly connected with the edge plates 4 along the two sides of the self-axis direction, the two edge plates 4 are hingedly connected with the arc-shaped turnover plates 41 through the hinge shafts located at the top ends of the corresponding side plates 14. When the turnover plate 41 is turned over to abut against the corresponding edge plate 4, the turnover plate 41 is coaxial with the corresponding side plate 14. The two end plates 13 are hingedly connected with the air cylinders 43, and the piston rods of the air cylinders 43 are hingedly connected with the corresponding turnover plates 41. The operator can control the turnover of the turnover plate 41 through the air cylinder 43.

[0042] The outer side of the turnover plate 41 is slidably provided with the moving plate 44 along the self-arc direction, the moving plate 44 is in the shape of a circular arc, the moving plate 44 is coaxial with the turnover plate 41, and the inner walls of the turnover plate 41 and the moving plate 44 are fixedly connected with the soundproof cotton. The end plate 13 is provided with the control assembly 5 for controlling the sliding of the moving plate 44 on the side plate 14, the control assembly 5 includes two gears 51 rotatably connected to the turnover plate 41, and the two gears 51 are symmetrically arranged along the axis direction of the turnover plate 41. The two sides of the moving plate 44 along the self-axis direction are fixedly connected with the racks 52, and the racks 52 are meshed with the corresponding gears 51. The sides opposite to each other of the two gears 51 are fixedly connected with the first sprockets 53 coaxially. The two sides of the turnover plate 41 along the self-axis direction are fixedly connected with the rotating shafts 54 coaxial with the hinge shafts of the turnover plate 41, the two rotating shafts 54 are rotatably connected with the second sprockets 55 coaxially, and the first sprockets 53 and the second sprockets 55 are wound with the first chains 56.

[0043] The two end plates 13 are rotatably connected with the driving shaft 6, one of the end plates 13 is fixedly connected with the driving motor 61 for controlling the rotation of the driving shaft 6, and the driving motor 61 is provided with a brake. The axis of the driving shaft 6 is parallel to the axis of the rotating shaft 54, the two ends of the driving shaft 6 are fixedly connected with the third sprockets 62 coaxially, the sides opposite to each other of the two second sprockets 55 are fixedly connected with the fourth sprockets 63 coaxially, the third sprockets 62 correspond to the fourth sprockets 63 one by one, and the third sprockets 62 and the corresponding fourth sprockets 63 are wound with the second chains 64 for transmission.

[0044] The operator starts the driving motor 61 to drive the driving shaft 6 to rotate, drives the two second sprockets 55 to rotate under the transmission of the second chains 64, and drives the two gears 51 to rotate under the transmission of the first chains 56. Since the gears 51 are meshed with the racks 52, the moving plate 44 is driven to slide on the turnover plate 41. The operator controls the air cylinder 43 to drive the turnover plate 41 to turn over to abut against the edge plate 4, and then the operator starts the driving motor 61 to drive the moving plate 44 to move towards the bottom of the side plate 14 until the wing plate 32 abuts against the discharge port 15. At this time, the turnover plate 41 and the moving plate 44 are unfolded and cover the side wall to form the soundproof cover 47.

[0045] As Figure 6The moving plate 44 is rotationally connected with a plurality of I-shaped wheels 45 on both sides of the moving plate 44 along the axis direction of the moving plate 44, and the I-shaped wheels 45 on the same side of the moving plate 44 are evenly arranged along the arc direction of the moving plate 44. The prismatic plate 4 is fixedly connected with a guide rail 46 for guiding the I-shaped wheels 45, the guide rail 46 is in the shape of an arc, and the central axis of the guide rail 46 is collinear with the central axis of the corresponding side plate 14. When the turnover plate 41 is turned to abut against the corresponding prismatic plate 4, and the moving plate 44 is in the storage state, the I-shaped wheels 45 are located at the upper end of the corresponding guide rail 46, and the I-shaped wheels 45 are aligned with the corresponding guide rail 46. When the operator drives the motor 61 to expand the moving plate 44, the I-shaped wheels 45 are inserted into the guide rail 46 and moved to between the guide rail 46 and the prismatic plate 4, until the moving plate 44 moves to abut against the discharge port 15.

[0046] As Figure 1 and Figure 7 The upper end of the moving plate 44 is provided with a supporting plate 7, and the operator can step on the supporting plate 7 to observe the concrete mixing condition in the machine body 1. The supporting plate 7 is hinged to the corresponding moving plate 44, and the two end plates 13 are hingedly connected with limiting plates 71, and the two limiting plates 71 are provided with limiting grooves 72 for inserting the supporting plate 7, and the supporting plate 7 and the limiting plate 71 or the moving plate 44 are connected through the locking assembly 8. The locking assembly 8 includes a supporting plate 81 fixedly connected to the limiting plate 71 and the moving plate 44, and the supporting plate 81 is provided with an insertion slot 82, and the supporting plate 7 is hingedly connected with a locking rod 83 on both sides of the side plate 14 along the axis direction. When the supporting plate 7 is inserted into the corresponding limiting groove 72, the operator can turn the turnover locking rod 83 into the insertion slot 82 corresponding to the limiting plate 71; when the supporting plate 7 is turned to abut against the corresponding moving plate 44, the operator can turn the turnover locking rod 83 into the insertion slot 82 corresponding to the moving plate 44.

[0047] As Figure 8 and Figure 9The limiting hole 84 is arranged at the position corresponding to the slot 82 of the supporting plate 81, and the diameter of the limiting hole 84 is greater than the slot width of the slot 82. The sliding sleeve of the locking rod 83 is provided with an insertion cylinder 85 for being inserted into the limiting hole 84. The end of the insertion cylinder 85 away from the supporting plate 7 is fixedly connected with a ring plate 86 for abutting against the supporting plate 81. The locking nut 87 is threadedly connected to the end of the locking rod 83 away from the supporting plate 7, and the side of the locking nut 87 coaxially fixedly connected with the sleeve 88 for pushing the insertion cylinder 85 to move. The sleeve 88 is sleeved on the locking rod 83, and the spring 89 is sleeved on the sleeve 88. One end of the spring 89 is abuttingly connected to the locking nut 87, and the other end of the spring 89 is abuttingly connected to the ring plate 86. The insertion cylinder 85 is inserted into the corresponding limiting hole 84 by the spring 89, so that the locking rod 83 can be quickly fixed. The operator twists the locking nut 87, so that the sleeve 88 abuttingly connects the insertion cylinder 85 to the limiting hole 84, and prevents the insertion cylinder 85 from being separated from the limiting hole 84, which is beneficial to improve the locking effect between the supporting plate 7 and the corresponding supporting plate 81, and makes the connection between the supporting plate 7 and the limiting plate 71 or the moving plate 44 more stable.

[0048] The principle of the embodiment of the present application is that the elastic pad 34 buffers the impact force of the wing plate 32 impacted by sand and stone, and reduces the noise generated by the vibration of the wing plate 32. The operator closes the turnover plate 41 and expands the moving plate 44 to form the soundproof cover 47 covering the side plate 14, reduces the noise in the machine body 1, thereby reducing the noise generated when the machine body 1 stirs the concrete, and improving the working environment.

[0049] The above are the preferred embodiments of the present application, and are not used to limit the protection scope of the present application. Therefore, equivalent changes made according to the structure, shape and principle of the present application should be covered in the protection scope of the present application.

Claims

1. A double shaft mixer characterized by: The utility model provides a sound insulation cover and a sound insulation cover control assembly, and the sound insulation cover is arranged on the outer wall of the machine body (1), and the sound insulation cover control assembly is arranged on the machine body (1) and is used for controlling the sound insulation cover to open and close. The sound insulation cover (47) comprises two edge plates (4) fixedly connected to the outer wall of the machine body (1), and a turnover plate (41) is hingedly connected between the two edge plates (4).

2. A dual shaft mixer as claimed in claim 1, wherein: The control assembly (5) comprises a gear (51) rotatably connected to the turnover plate (41), a rack (52) fixedly connected to the gear (51) and engaged with the gear (51), a first sprocket (53) fixedly connected to the gear (51) and coaxial with the gear (51), a rotating shaft (54) fixedly connected to the turnover plate (41) and coaxial with the hinge shaft of the turnover plate (41), a second sprocket (55) rotatably connected to the rotating shaft (54), a first chain (56) wound between the first sprocket (53) and the second sprocket (55), a driving motor (61) fixedly connected to the machine body (1), a third sprocket (62) fixedly connected to the output shaft of the driving motor (61) and coaxial with the driving motor (61), a fourth sprocket (63) fixedly connected to the second sprocket (55) and coaxial with the second sprocket (55), and a second chain (64) wound between the third sprocket (62) and the fourth sprocket (63).

3. A dual shaft mixer as claimed in claim 2, wherein: The moving plate (44) is rotatably connected to an I-shaped wheel (45) on both sides, and the edge plate (4) is fixedly connected to a guide rail (46) for limiting the I-shaped wheel (45).

4. A dual shaft mixer as claimed in claim 2, wherein: ​ 5. A dual shaft mixer as claimed in claim 2, wherein: The mobile plate (44) is hinged with a supporting plate (7) for stepping, the machine body (1) is hinged with a limiting plate (71), the limiting plate (71) is provided with a limiting slot (72) for inserting the supporting plate (7), and the supporting plate (7) is provided with a locking assembly (8) for limiting overturning.

6. A dual shaft mixer as claimed in claim 5, wherein: The locking assembly (8) comprises a locking rod (83) hinged on the supporting plate (7), the limiting plate (71) and the mobile plate (44) are fixedly connected with a supporting plate (81), the supporting plate (81) is provided with an insertion slot (82) for inserting the locking rod (83), the locking rod (83) is slidably provided with an insertion cylinder (85), the supporting plate (81) is provided with a limiting hole (84) for inserting the insertion cylinder (85), the diameter of the limiting hole (84) is greater than the slot width of the insertion slot (82), and the locking rod (83) is provided with a spring (89) for pushing the insertion cylinder (85) to insert into the limiting hole (84).

7. A dual shaft mixer as claimed in claim 6, wherein: The insertion cylinder (85) is threadedly connected with a locking nut (87), the locking nut (87) is coaxially fixedly connected with a sleeve (88) for pushing the insertion cylinder (85) to move, the spring (89) is sleeved on the sleeve (88), and one end of the spring (89) abuts on the locking nut (87), and the other end of the spring (89) abuts on the insertion cylinder (85).

8. A dual shaft mixer as claimed in claim 1, wherein: The machine body (1) is rotatably connected with a stirring shaft (12), the stirring shaft (12) is detachably fixedly connected with a stirring blade (21), and the stirring blade (21) is detachably fixedly connected with a guard plate (28).

9. A dual shaft mixer as claimed in claim 8, wherein: The stirring shaft (12) is provided with a plurality of installation slots (2), the stirring blade (21) is fixedly connected with an insertion rod (22) for inserting into the installation slot (2), the stirring blade (21) is hinged with a first hoop plate (23) and a second hoop plate (24), the first hoop plate (23) is hinged with a screw sleeve (27), the second hoop plate (24) is hinged with a guide cylinder (25), the guide cylinder (25) is inserted with a fixing bolt (26), and the fixing bolt (26) is threadedly connected in the screw sleeve (27).

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