Modularized stirrer capable of quickly replacing impeller

Abstract

The invention belongs to the technical field of stirrers, and particularly relates to a modularized stirrer capable of quickly replacing an impeller, which comprises a main body, and a sealing cover is arranged at the upper end of the main body; the stirring assembly comprises a rotating shaft, the rotating shaft is connected to the sealing cover, and an impeller is arranged on the outer ring of the rotating shaft; the locking assembly comprises a lifting rod, the lifting rod is connected into the rotating shaft, the outer ring of the rotating shaft is connected with a positioning block, and the impeller is connected with the lifting rod through a pull rope; the timing assembly comprises a linkage shaft, the linkage shaft is connected to the lower end of the main body and connected with the impeller, and the lower end of the main body is connected with a rotating speed sensor and a timer. Impellers of different shapes can be replaced according to materials of stirred materials, locking of the impellers of different heights can be selectively relieved by controlling the height of the lifting rod when the impellers are replaced, it is avoided that when the impeller at the bottom is replaced, the impeller at the upper portion falls off together, the operation duration of the impellers can be recorded, and an alarm is given after the preset operation duration.

Description

Technical Field

[0001] The invention belongs to the technical field of mixers, and in particular relates to a mixer with a modular and quick-replacement impeller. Background Art

[0002] As a core equipment in process industries such as chemical, environmental protection, and food, the impeller of the mixer is a key component for power transmission and flow field construction, which directly affects mixing efficiency, energy consumption, and equipment reliability. However, existing mixers have significant technical shortcomings in terms of impeller adaptability and intelligent maintenance.

[0003] First of all, modern process industries need to deal with differentiated process scenarios such as high-viscosity slurry dispersion, low-shear homogenization, and gas-liquid mass transfer enhancement. The stirring effects of different impeller configurations vary significantly, but traditional mixer impellers are mostly fixed to the stirring shaft with flange bolts. A single replacement requires disassembly of the coupling, hoisting the stirring shaft, and loosening 8-12 high-strength bolts, which takes more than 2 hours. Repeated disassembly and assembly cause wear of the shaft end threads, causing the dynamic balance to exceed the standard, and it is impossible to quickly replace the appropriate impeller according to the needs of the slurry and the stirring object.

[0004] Secondly, when the impeller is in service, the wear rate is exponentially related to the hardness of the medium and the rotation speed. After long-term use, the impeller will inevitably be replaced due to damage. However, the existing equipment lacks a life prediction module, and the maintenance cycle relies on empirical estimation or post-failure maintenance, resulting in two extreme risks: premature replacement resulting in spare parts waste, or excessive use causing impeller breakage. Summary of the invention

[0005] The purpose of the present invention is to provide a modular mixer with quick-change impellers, which can replace impellers of different shapes according to the material of the mixing material, and when replacing the impeller, the lock of impellers of different heights can be released by controlling the height of the lifting rod to avoid the upper impeller falling when replacing the bottom impeller, causing a safety hazard. The impeller can also record the running time of the impeller and issue an alarm after the impeller reaches a certain running time.

[0006] The technical solution adopted by the present invention is as follows: A modular mixer with quick-change impeller, comprising: A main body, the upper end of which is in contact with and connected to a sealing cover; The stirring assembly includes a rotating shaft, which is rotatably connected to the middle of the sealing cover, and the outer ring of the rotating shaft is movably sleeved with an impeller 1 and an impeller 2; The locking assembly includes a lifting rod, which is slidably connected to the inner cavity of the rotating shaft, and the lower end and the middle outer ring of the rotating shaft are respectively slidably connected to the positioning block 1 and the positioning block 2, and the positioning block 1 and the positioning block 2 are respectively contacted and connected to the impeller 1 and the impeller 2, and the impeller 1 and the impeller 2 are fixedly connected to the lifting rod through a pull rope; The timing assembly includes a linkage shaft, which is rotatably connected to the lower end of the main body, a linkage groove is provided at the lower end of the impeller, and the upper end of the linkage shaft is movably sleeved in the linkage groove, and a speed sensor and a timer are fixedly connected to the lower end of the main body; Among them, the positioning block 1 and the positioning block 2 are used to fix the impeller 1 and the impeller 2 respectively, and are used to drive the positioning block 1 and the positioning block 2 to release the fixation of the impeller 1 and the impeller 2 through the lifting rod; The linkage shaft rotates simultaneously with the rotating shaft and transmits information to the speed sensor. The speed sensor and the timer record the running time of the impeller through the linkage shaft.

[0007] In a preferred embodiment, a feed port is provided at the upper end of the sealing cover, a discharge port is provided at the lower end of the outer edge of the main body, and cover plates are hingedly connected to the feed port and the discharge port.

[0008] In a preferred embodiment, a lifting tube is fixedly connected to the rear side of the lower end of the sealing cover, a motor is fixedly installed on the rear side of the lower end of the main body, a screw is fixedly connected to the output shaft of the motor, a limiting plate is fixedly connected to the rear side of the outer edge of the main body, and the inner cavity of the lifting tube is slidably connected to the outer edge of the limiting plate, the upper end of the screw is rotatably connected to the lower end of the limiting plate, and the outer ring of the screw is threadedly connected to the middle part of the lower end of the lifting tube.

[0009] In a preferred embodiment, the stirring assembly also includes motor 2, which is fixedly mounted on the upper end of the sealing cover, and the output shaft of motor 2 is fixedly connected to the upper end of the rotating shaft, the lower end outer ring of the rotating shaft is fixedly connected to drive plate 1, and the middle section outer ring of the rotating shaft is fixedly connected to drive plate 2, the upper end of drive plate 2 is fixedly connected to a baffle, and the baffle is fixedly connected to the outer ring of the rotating shaft, impeller 1 is movably sleeved on the outer edge of drive plate 1, and impeller 2 is movably sleeved on the outer edge of drive plate 2, and the upper end of impeller 2 is contact-connected to the lower end of the baffle.

[0010] In a preferred embodiment, the driving plate 1 and the driving plate 2 are both cross-shaped plates, and the inner rings of the impellers 1 and 2 are both provided with cross-shaped grooves, and the two groups of cross-shaped plates and cross-shaped grooves are adapted to each other.

[0011] In a preferred embodiment, the locking assembly also includes two groups of springs 1, and the two groups of springs 1 are respectively fixedly connected to the side of the positioning block 1 and the positioning block 2 facing the inner cavity of the rotating shaft, the other ends of the two groups of springs 1 are fixedly connected to the inner cavity of the rotating shaft, the upper end inner cavity of the impeller 2 is provided with four groups of slots, the outer rings of the positioning block 1 are movably inserted in the slots, and the upper ends of the positioning block 2 are contacted and connected to the lower end of the impeller 2, the outer rings of the lifting rods are respectively movably sleeved with the two groups of springs 2, and the two groups of springs 2 are fixedly connected to the outer rings of the lifting rods, and the upper ends of the two groups of springs 2 are fixedly connected to the inner cavity of the rotating shaft, the upper end of the lifting rod is fixedly connected with a pull plate, the upper end side of the rotating shaft is provided with a strip groove, and the pull plate is slidably connected in the strip groove.

[0012] In a preferred embodiment, the middle outer ring and the lower outer ring of the lifting rod are respectively fixedly connected with convex plates, and the two groups of springs are respectively fixedly connected to the upper ends of the two groups of convex plates, and the convex plate located at the middle outer ring is a quadrilateral.

[0013] In a preferred embodiment, a spacer sleeve is threadedly connected to the middle portion of the lower end of the sealing cover, and the inner ring of the spacer sleeve is sleeved on the outer ring of the upper end of the rotating shaft and covers the outer side of the strip groove at the upper end of the rotating shaft.

[0014] In a preferred embodiment, the lower end of the linkage shaft passes through the main body and extends out of the lower end of the main body. The timing assembly also includes a reflection plate, which is fixedly connected to the outside of the part of the linkage shaft extending out of the main body, and the reflection plate and the speed sensor are on the same horizontal line. An alarm and a protective cover are fixedly installed at the lower end of the main body, and a warning light is fixedly connected to the protective cover. The warning light and the alarm are electrically connected to the timer through a data line, and the timer is electrically connected to the speed sensor through the data line.

[0015] In a preferred embodiment, a speaker slot is provided on the outer side of the protective cover at the position of the alarm.

[0016] The technical effects achieved by the present invention are: The stirring assembly and locking assembly of the present invention can replace impellers of different shapes according to the material of the stirring material, thereby improving the adaptability and practicality of the device; before stirring the material, the impeller 2 of different shapes is selected according to the material of the stirring material, and then the two groups of positioning blocks of the locking assembly are opened, and the selected impeller 2 and impeller 1 are installed on the outer ring of the rotating shaft, thereby realizing the modular replacement of the impeller, and improving the applicability and diversity of the device; The stirring assembly and locking assembly of the present invention can control the height of the lifting rod to selectively unlock the impellers at different heights, thereby preventing the upper impeller from falling when replacing the bottom impeller, thereby causing a safety hazard; when the impeller at the middle or bottom of the rotating shaft needs to be disassembled, the lifting rod of the locking assembly is pulled up, and when the lifting rod rises to a node at half of the total stroke, the positioning block at the bottom is completely retracted, and the impeller at the bottom is unlocked, and the impeller at the bottom can be disassembled and replaced at this time, and when the lifting rod rises to the end point of the total stroke, the middle and lower positioning blocks are completely retracted, and the middle and bottom impellers are unlocked, so that the middle impeller can be replaced, so as to adapt to materials of different materials and improve practicality; The timing component and stirring component of the present invention can record the running time of the impeller when the device is running, and send out an alarm after the impeller reaches a certain running time, reminding the staff to replace it in time; during the operation of the device, the impeller drives the linkage shaft to rotate. At this time, the speed sensor detects the rotation of the linkage shaft and records the rotation time of the impeller through the timer. After the impeller reaches a certain running time, the alarm sound and light are sent out through the alarm component of the timing component to remind the staff to replace it in time to avoid damage to the impeller and affect the stirring work. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a bottom view schematic diagram of the whole of the present invention; Figure 3 It is a rising effect diagram of the sealing cover in the present invention; Figure 4 It is a cross-sectional schematic diagram of the main body in the present invention; Figure 5 This is a diagram showing the effect of removing the isolation sleeve in the present invention; Figure 6 This is a split effect diagram of the linkage shaft and the impeller in the present invention; Figure 7 It is a schematic diagram of the position of the protective cover in the present invention; Figure 8 It is a structural schematic diagram of the timing component in the present invention; Fig. 9 This is a separation effect diagram of the impeller 1 and the impeller 2 and the rotating shaft in the present invention; Fig.10 It is a cross-sectional schematic diagram of an impeller 1 and a rotating shaft in the present invention; Fig.11 It is a cross-sectional schematic diagram of the impeller 2 and the rotating shaft in the present invention; Fig.12 is a schematic cross-sectional view of the upper end of the rotating shaft in the present invention; Fig.13 It is a schematic diagram of the shape of multiple groups of impellers 2 in the present invention.

[0018] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 10. Main body; 11. Sealing cover; 12. Feed inlet; 13. Discharge outlet; 14. Lifting tube; 15. Motor 1; 16. Screw; 17. Limit plate; 20. Stirring assembly; 21. Motor 2; 22. Rotating shaft; 23. Drive plate 1; 24. Drive plate 2; 25. Baffle; 26. Impeller 1; 27. Impeller 2; 30. Locking assembly; 31. Lifting rod; 32. Positioning block 1; 33. Positioning block 2; 34. Spring 1; 35. Pull rope; 36. Slot; 37. Spring 2; 38. Pull plate; 39. Isolation sleeve; 40. Timing assembly; 41. Linkage shaft; 42. Linkage slot; 43. Reflection plate; 44. Speed ​​sensor; 45. Timer; 46. Alarm; 47. Warning light; 48. Protective cover. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0022] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0023] Please see attached Figure 1 , Figure 4 , Figures 6 to 11 As shown, this embodiment provides a modular mixer with quick-change impellers, comprising: A main body 10, the upper end of the main body 10 is in contact with a sealing cover 11; The stirring assembly 20 includes a rotating shaft 22, which is rotatably connected to the middle of the sealing cover 11 through a ball bearing, and an outer ring of the rotating shaft 22 is movably sleeved with an impeller 1 26 and an impeller 27; The locking assembly 30 includes a lifting rod 31, which is slidably connected to the inner cavity of the rotating shaft 22. The lower end and the middle outer ring of the rotating shaft 22 are slidably connected to a positioning block 1 32 and a positioning block 2 33, respectively. The positioning block 1 32 and the positioning block 2 33 are respectively contacted and connected to the impeller 1 26 and the impeller 2 27, and the impeller 1 26 and the impeller 27 are fixedly connected to the lifting rod 31 through a pull rope 35. Timing assembly 40, the timing assembly 40 includes a linkage shaft 41, the linkage shaft 41 is rotatably connected to the lower end of the main body 10 through a ball bearing, a linkage groove 42 is opened at the lower end of the impeller 26, and the upper end of the linkage shaft 41 is movably sleeved in the linkage groove 42, and a speed sensor 44 and a timer 45 are fixedly connected to the lower end of the main body 10; Among them, the positioning block 1 32 and the positioning block 2 33 are used to fix the impeller 1 26 and the impeller 2 27 respectively, and the lifting rod 31 is used to drive the positioning block 1 32 and the positioning block 2 33 to release the fixing of the impeller 1 26 and the impeller 2 27; The linkage shaft 41 rotates simultaneously with the rotating shaft 22 and transmits information to the rotation speed sensor 44 . The rotation speed sensor 44 and the timer 45 record the running time of the impeller through the linkage shaft 41 .

[0024] It should be noted that a hexagonal protrusion is fixedly connected to the upper end of the linkage shaft 41, and the linkage groove 42 is a hexagonal empty groove. The protrusion and the linkage groove 42 are adapted to each other, and the upper end of the protrusion and the lower end of the linkage groove 42 are rounded to facilitate the connection between the protrusion and the linkage groove 42.

[0025] In this embodiment, during daily use, after the sealing cover 11 rises, the impeller 27 of a suitable shape is selected according to the material of the mixing material, and then the lifting rod 31 is pulled up to retract the positioning block 1 32 and the positioning block 2 33, and then the impeller 1 26 and the impeller 2 27 are successively sleeved on the outside of the rotating shaft 22, and the lifting rod 31 is loosened, and the impeller 1 26 and the impeller 27 are locked and fixed by the locking assembly 30, and then the sealing cover 11 is lowered, and the impeller 1 26 is sleeved on the outer ring of the linkage shaft 41, and then the material is filled for mixing. At this time, the impeller 1 26 drives the linkage shaft 41 to rotate together, and the rotation time of the linkage shaft 41 is recorded by the speed sensor 44 and the timer 45, and then the rotation time of the impeller is inferred. After reaching a certain time, the timing assembly 40 issues an alarm to remind the staff to replace it.

[0026] Next, please refer to Figures 1 to 3 A feed port 12 is provided at the upper end of the sealing cover 11 , a discharge port 13 is provided at the lower end of the outer edge of the main body 10 , and cover plates are hinged on the feed port 12 and the discharge port 13 .

[0027] A lifting pipe 14 is fixedly connected to the position at the rear side of the lower end of the sealing cover 11. A first motor 15 is fixedly installed at the rear side of the lower end of the main body 10. A lead screw 16 is fixedly connected to the output shaft of the first motor 15. A limiting plate 17 is fixedly connected to the rear side of the outer edge of the main body 10. The inner cavity of the lifting pipe 14 is slidably connected to the outer edge of the limiting plate 17. The upper end of the lead screw 16 is rotatably connected to the lower end of the limiting plate 17 through a ball bearing, and the outer ring of the lead screw 16 is threadedly connected to the middle part of the lower end of the lifting pipe 14.

[0028] It should be noted that the limiting plate 17 is a long plate in the shape of a Chinese character 'zhong'. Through grooves are formed at both ends of the inner cavity of the lifting pipe 14. The protruding parts at both ends of the limiting plate 17 are slidably connected to the through grooves at both ends of the lifting pipe 14, thereby restricting the movement range of the lifting pipe 14 and improving the stability of the lifting of the lifting pipe 14.

[0029] In this embodiment, when in use, the first motor 15 operates to drive the lead screw 16 to rotate. The lifting pipe 14 is driven by the rotational driving force of the lead screw 16 and moves up and down under the limiting action of the limiting plate 17, thereby driving the sealing cover 11 to rise or fall, facilitating the staff to open or close the main body 10 and facilitating the installation and replacement of the impeller.

[0030] Secondly, please refer to Figure 4 、 Fig. 9 and Fig.13 again. The stirring assembly 20 further includes a second motor 21. The second motor 21 is fixedly installed at the upper end of the sealing cover 11. The output shaft of the second motor 21 is fixedly connected to the upper end of the rotating shaft 22. A first driving plate 23 is fixedly connected to the outer ring of the lower end of the rotating shaft 22. A second driving plate 24 is fixedly connected to the outer ring of the middle section of the rotating shaft 22. A baffle 25 is fixedly connected to the upper end of the second driving plate 24, and the baffle 25 is fixedly connected to the outer ring of the rotating shaft 22. The first impeller 26 is movably sleeved on the outer edge of the first driving plate 23, while the second impeller 27 is movably sleeved on the outer edge of the second driving plate 24, and the upper end of the second impeller 27 is in contact connection with the lower end of the baffle 25.

[0031] Both the first driving plate 23 and the second driving plate 24 are cross-shaped plates. Cross-shaped grooves are formed in the inner rings of both the first impeller 26 and the second impeller 27. The two cross-shaped plates and the cross-shaped grooves are mutually adapted, aiming to enable the second impeller 27 to slide to the outer edge of the second driving plate 24 through the first driving plate 23, avoiding the influence of the first driving plate 23 on the installation of the second impeller 27. At the same time, the lower ends of both the first driving plate 23 and the second driving plate 24 and the upper ends of both the first impeller 26 and the second impeller 27 are subjected to rounding treatment for easy connection.

[0032] It should be noted that multiple groups of the second impellers 27 are provided to adapt to different stirring requirements. The shapes of the multiple groups of the second impellers 27 in this embodiment are preferably straight plate-shaped, arc-shaped, and mesh-shaped.

[0033] Preferably, impellers 27 of different shapes can be further added according to different stirring requirements, so as to provide the optimal impeller shape when dealing with materials in different states.

[0034] In this embodiment, when in use, the impeller 27 of a suitable shape is selected according to the material to be stirred, and then the impeller 27 and the impeller 1 26 are sequentially inserted into the rotating shaft 22, and connected with the driving plate 24 and the driving plate 1 23, so as to complete the modular installation of impellers of different shapes. When stirring the material, the motor 21 drives the rotating shaft 22, the driving plate 24 and the driving plate 1 23 to rotate, and then drives the impeller 2 27 and the impeller 1 26 to rotate, so as to stir and mix the material.

[0035] Next, please refer to Figures 4 to 5 , Figures 9 to 12 The locking assembly 30 also includes two groups of springs 34, and the two groups of springs 34 are respectively fixedly connected to the side of the positioning block 1 32 and the positioning block 2 33 facing the inner cavity of the rotating shaft 22, and the other ends of the two groups of springs 1 34 are fixedly connected to the inner cavity of the rotating shaft 22. The upper inner cavity of the impeller 27 is provided with four groups of slots 36, and the outer rings of the positioning blocks 1 32 are movably inserted in the slots 36, and the upper ends of the positioning blocks 2 33 are contacted and connected to the lower end of the impeller 27. The outer rings of the lifting rods 31 are respectively movably sleeved with two groups of springs 2 37, and the two groups of springs 2 37 are fixedly connected to the outer rings of the lifting rods 31, and the upper ends of the two groups of springs 2 37 are fixedly connected to the inner cavity of the rotating shaft 22. The upper end of the lifting rod 31 is fixedly connected with a pull plate 38, and the upper end side of the rotating shaft 22 is provided with a strip groove, and the pull plate 38 is slidably connected in the strip groove.

[0036] The middle outer ring and the lower outer ring of the lifting rod 31 are respectively fixedly connected with convex plates, and the two groups of springs 2 37 are respectively fixedly connected to the upper ends of the two groups of convex plates, and the convex plate located on the middle outer ring is a quadrilateral, which is intended to use the quadrilateral convex plate to limit the lifting rod 31, so that the lifting rod 31 can only slide up and down in the inner cavity of the rotating shaft 22 and cannot rotate, thereby preventing the pull rope 35 from being entangled due to the rotation of the lifting rod 31, affecting the limiting effect of the impeller 1 26 and the impeller 2 27.

[0037] An isolation sleeve 39 is threadedly connected to the middle part of the lower end of the sealing cover 11, and the inner ring of the isolation sleeve 39 is sleeved on the outer ring of the upper end of the rotating shaft 22 and covers the outer side of the strip groove at the upper end of the rotating shaft 22. The isolation sleeve 39 is intended to be used to isolate and protect the area of ​​the pull plate 38 to prevent the stirred and mixed substances from contacting the pull plate 38 and affecting the movement of the pull plate 38.

[0038] It should be noted that there are four groups of positioning blocks 1 32 and positioning blocks 2 33, which are evenly distributed on the lower end and the middle outer ring of the rotating shaft 22, and the lower ends of the positioning blocks 1 32 and positioning blocks 2 33 are provided with slopes, and the upper ends of the impellers 1 26 and impellers 2 27 are provided with matching slopes, so that during the rising process of the impellers 1 26 and impellers 2 27, the slopes at their upper ends can be used to push the positioning blocks 1 32 and positioning blocks 2 33 to retract into the inner cavity of the rotating shaft 22.

[0039] The positioning block 1 32 and the positioning block 2 33 are both provided with convex plates at the upper and lower ends of the inner cavity of the rotating shaft 22, and the side of the convex plates facing the inner cavity of the rotating shaft 22 is fixedly connected to the spring 1 34 and the pull rope 35, so that the positioning block 1 32 and the positioning block 2 33 can be pushed outward by the elastic force of the spring 1 34, thereby fixing the impeller 1 26 and the impeller 2 27, and can also be retracted by the pull rope 35 to release the fixation of the impeller 1 26 and the impeller 2 27.

[0040] The length of positioning block one 32 is smaller than that of positioning block two 33. In the present embodiment, the length of positioning block one 32 is preferably half of that of positioning block two 33, so as to divide the ascending process of lifting rod 31 into two sections. In the first section, lifting rod 31 can only pull positioning block one 32 to be fully retracted, and lifting rod 31 continues to rise, and positioning block two 33 can be fully retracted when it reaches the second section, so that impeller one 26 or impeller two 27 can be disassembled and replaced according to the rising height of pull plate 38.

[0041] The upper outer ring of the rotating shaft 22 is provided with a limiting protrusion, thereby limiting the movable space of the isolation sleeve 39, so as to prevent the isolation sleeve 39 from dropping too much after being separated from the sealing cover 11, thereby affecting the efficiency of subsequent resetting.

[0042] Both sets of pull ropes 35 are made of steel wire ropes, and the inner cavity of the rotating shaft 22 and the contact portion of the pull ropes 35 are rounded to reduce friction between the pull ropes 35 and increase the service life of the pull ropes 35.

[0043] A slope is provided at the lower end of the pull plate 38 so that when the pull plate 38 is completely in contact with the bottom surface of the strip groove at the upper end of the rotating shaft 22, there is still a gap due to the slope, which facilitates pulling the pull plate 38 upward.

[0044] In this embodiment, when disassembling impeller 1 26 and impeller 2 27, first rotate the isolation sleeve 39 to remove it to expose the pull plate 38, and then pull up the pull plate 38. When the pull plate 38 moves to the middle (specifically one-half) of the strip groove at the upper end of the rotating shaft 22, the rising lifting rod 31 is sufficient to drive the positioning block 1 32 to be completely retracted into the rotating shaft 22 through the pull rope 35, so that the impeller 1 26 can be disassembled for replacement. When the pull plate 38 moves to the upper end of the strip groove of the rotating shaft 22, the lifting rod 31 can drive the positioning block 2 33 to retract the rotating shaft 22 through the pull rope 35, so that both the impeller 1 26 and the impeller 2 27 can be disassembled and replaced. When installing the impeller 1 26 and the impeller 2 27, the impeller 2 27 is first inserted into the rotating shaft 22. At this time, the impeller 2 27 uses the slope at the upper end to push the positioning block 1 32 back to the inner cavity of the rotating shaft 22, and continues to rise and contact the positioning block 2 33. Then, the positioning block 2 33 is retracted into the rotating shaft 22 by using the slope at the upper end, until the upper end of the impeller 27 contacts the baffle 25. At this time, the spring 1 34 pushes the positioning block 2 33 to move outward and is stuck under the impeller 2 27 to fix the impeller 2 27. Then, the impeller 1 26 is inserted into the driving plate 1 23. The impeller 1 26 pushes the positioning block 1 32 to retract the rotating shaft 22 and continues to rise. When the positioning block 1 32 is aligned with the slot 36, the spring 1 34 located below pushes the positioning block 1 32 to insert into the slot 36 to complete the limit fixation of the impeller 1 26. In this way, the modular installation of the impeller 1 26 and the impeller 2 27 is realized, and the disassembly and replacement in batches are improved, so as to improve the efficiency and applicability.

[0045] Please refer again Figure 2 , Figure 4 , Figures 6 to 8 The lower end of the linkage shaft 41 passes through the main body 10 and extends out of the lower end of the main body 10. The timing component 40 also includes a reflection plate 43, which is fixedly connected to the outer side of the part of the linkage shaft 41 extending out of the main body 10, and the reflection plate 43 and the speed sensor 44 are on the same horizontal line. An alarm 46 and a protective cover 48 are fixedly installed at the lower end of the main body 10, and a warning light 47 is fixedly connected to the protective cover 48. The warning light 47 and the alarm 46 are electrically connected to the timer 45 through a data line, and the timer 45 is electrically connected to the speed sensor 44 through the data line.

[0046] A speaker slot is provided on the outside of the protective cover 48 at the position of the alarm 46 so that the sound of the alarm 46 can be transmitted through the speaker slot.

[0047] It should be noted that the timer 45 has a built-in processing element (not shown in the figure), which is intended to use the processing element to record the rotation duration of the linkage shaft 41, and after reaching a certain duration, control the alarm 46 and the warning light 47 to send out an alarm signal to remind the staff to replace the impeller.

[0048] The reflection plate 43 is a component for reflecting the signal of the rotation speed sensor 44, and the rotation speed of the linkage shaft 41 is calculated using the interval of the reflected signal of the reflection plate 43 (this is a common technical structure in the prior art and will not be described in detail).

[0049] Preferably, to ensure the accuracy of recording the impeller running time, only when the speed sensor 44 detects that the rotation speed of the linkage shaft 41 is greater than 0.5rpm, will it determine that the rotating shaft 22 and the impeller installed on its outer edge are "in operation" and trigger the timer 45 to start timing.

[0050] In order to ensure that the operating time of different types of impellers can still be recorded after they are adapted and replaced to meet different material mixing requirements, an information storage unit should be set in the timer 45 to record the operating time of different types of impellers. After the impeller is replaced, the staff will operate the timer 45 to continue timing the impeller of that model.

[0051] In this embodiment, after the sealing cover 11 is lowered, the linkage groove 42 at the lower end of the impeller 1 26 will be sleeved on the outer ring of the linkage shaft 41, and when the rotating shaft 22, the impeller 2 27 and the impeller 1 26 rotate, the linkage shaft 41 is driven to rotate together. At this time, the linkage shaft 41 reflects the speed signal to the speed sensor 44 through the reflection plate 43. At this time, the speed sensor 44 detects that the linkage shaft 41 is rotating, and then infers that the impeller 2 27 and the impeller 1 26 are also rotating. Then the speed sensor 44 transmits the signal to the timer 45, and the timer 45 records the duration of the linkage shaft 41 rotation, that is, the running time of the two groups of impellers. When the preset duration is reached, the timer 45 transmits the signal to the alarm 46 and the warning light 47 through the data line, controls the alarm 46 to sound an alarm, and at the same time the warning light 47 flashes to remind the staff that the impeller has reached the preset running time and needs to be replaced. Such a design not only improves the intelligent level of the mixer, but also ensures the efficient and safe operation of the mixing operation.

[0052] The working principle of the present invention is as follows: the motor 15 drives the screw rod 16 to rotate, so that the lifting tube 14 and the sealing cover 11 rise, and then the material to be stirred is selected, and the impeller 2 27 of suitable shape is selected, and then the impeller 2 27 and the impeller 1 26 are inserted into the rotating shaft 22 in sequence, and the two groups of impellers rely on the slopes at their upper ends to push the two groups of positioning blocks back into the rotating shaft 22, and after the two groups of impellers are completely connected with the driving plate 1 23 and the driving plate 2 24 respectively, the two groups of springs 1 34 push the two groups of positioning blocks out of the rotating shaft 22, limit and fix the two groups of impellers, and complete the installation of the two groups of impellers, and then the sealing cover 11 descends, The linkage groove 42 at the lower end of the impeller 1 26 will be sleeved on the outer ring of the linkage shaft 41. At this time, materials are added into the main body 10 through the feed port 12, and the motor 21 drives the rotating shaft 22, as well as the two sets of drive plates and impellers to rotate to mix the materials. When the impeller 1 26 rotates, it will drive the linkage shaft 41 to rotate together. At this time, the speed sensor 44 detects that the linkage shaft 41 is rotating and running, and infers that the impeller 2 27 and the impeller 1 26 are also rotating and running. Then the speed sensor 44 transmits the signal to the timer 45, and the timer 45 records the rotation time of the linkage shaft 41, that is, the running time of the two sets of impellers. When the preset time is reached, the timer 45 transmits the signal to the alarm 46 and the warning light 47 through the data line, and emits an alarm sound and light to remind the staff that the impeller has reached the preset running time and needs to be replaced. When disassembling impeller 1 26 and impeller 2 27, first rotate the isolation sleeve 39 to remove it to expose the pull plate 38, and then pull up the pull plate 38. When the pull plate 38 moves to the middle (specifically one-half) of the strip groove at the upper end of the rotating shaft 22, the rising lifting rod 31 is sufficient to drive the positioning block 1 32 to be completely retracted into the rotating shaft 22 through the pull rope 35, so that the impeller 1 26 and the impeller 2 27 can be removed and replaced. When the pull plate 38 moves to the upper end of the strip groove of the rotating shaft 22, the lifting rod 31 can drive the positioning block 2 33 to be retracted into the rotating shaft 22 through the pull rope 35, so that both the impeller 1 26 and the impeller 2 27 can be removed and replaced, thereby realizing the disassembly of the two groups of impellers in batches, avoiding the impeller 2 27 from falling when the impeller 1 26 is disassembled, causing a safety hazard.

[0053] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. A modular mixer with quick-change impeller, characterized in that: include: A main body, the upper end of which is in contact with and connected to a sealing cover; The stirring assembly includes a rotating shaft, which is rotatably connected to the middle of the sealing cover, and the outer ring of the rotating shaft is movably sleeved with an impeller 1 and an impeller 2; The locking assembly includes a lifting rod, which is slidably connected to the inner cavity of the rotating shaft, and the lower end and the middle outer ring of the rotating shaft are respectively slidably connected to the positioning block 1 and the positioning block 2, and the positioning block 1 and the positioning block 2 are respectively contacted and connected to the impeller 1 and the impeller 2, and the impeller 1 and the impeller 2 are fixedly connected to the lifting rod through a pull rope; The timing assembly includes a linkage shaft, which is rotatably connected to the lower end of the main body, a linkage groove is provided at the lower end of the impeller, and the upper end of the linkage shaft is movably sleeved in the linkage groove, and a speed sensor and a timer are fixedly connected to the lower end of the main body; Among them, the positioning block 1 and the positioning block 2 are used to fix the impeller 1 and the impeller 2 respectively, and are used to drive the positioning block 1 and the positioning block 2 to release the fixation of the impeller 1 and the impeller 2 through the lifting rod; The linkage shaft rotates simultaneously with the rotating shaft and transmits information to the speed sensor. The speed sensor and the timer record the running time of the impeller through the linkage shaft.

2. The modular mixer with quick-change impeller according to claim 1, characterized in that: A feed port is provided at the upper end of the sealing cover, a discharge port is provided at the lower end of the outer edge of the main body, and cover plates are hinged on the feed port and the discharge port.

3. The modular mixer with quick-change impeller according to claim 1, characterized in that: A lifting tube is fixedly connected to the rear side of the lower end of the sealing cover, a motor is fixedly installed on the rear side of the lower end of the main body, a screw is fixedly connected to the output shaft of the motor, a limit plate is fixedly connected to the rear side of the outer edge of the main body, and the inner cavity of the lifting tube is slidably connected to the outer edge of the limit plate, the upper end of the screw is rotatably connected to the lower end of the limit plate, and the outer ring of the screw is threadedly connected to the middle part of the lower end of the lifting tube.

4. The modular mixer with quick-change impeller according to claim 1, characterized in that: The stirring assembly also includes motor 2, which is fixedly mounted on the upper end of the sealing cover, and the output shaft of motor 2 is fixedly connected to the upper end of the rotating shaft, the lower end outer ring of the rotating shaft is fixedly connected to drive plate 1, and the middle section outer ring of the rotating shaft is fixedly connected to drive plate 2, the upper end of drive plate 2 is fixedly connected to a baffle, and the baffle is fixedly connected to the outer ring of the rotating shaft, impeller 1 is movably sleeved on the outer edge of drive plate 1, and impeller 2 is movably sleeved on the outer edge of drive plate 2, and the upper end of impeller 2 is contact-connected to the lower end of the baffle.

5. The modular mixer with quick-change impeller according to claim 4, characterized in that: The driving plate 1 and the driving plate 2 are both cross-shaped plates, and the inner circles of the impeller 1 and the impeller 2 are both provided with cross-shaped grooves, and the two groups of cross-shaped plates and cross-shaped grooves are adapted to each other.

6. The modular mixer with quick-change impeller according to claim 1, characterized in that: The locking assembly also includes two groups of springs 1, and the two groups of springs 1 are respectively fixedly connected to the positioning block 1 and the positioning block 2 on one side facing the inner cavity of the rotating shaft, the other ends of the two groups of springs 1 are fixedly connected to the inner cavity of the rotating shaft, the upper inner cavity of the impeller 2 is provided with four groups of slots, the outer rings of the positioning block 1 are movably inserted in the slots, and the upper ends of the positioning block 2 are contacted and connected to the lower end of the impeller 2, the outer rings of the lifting rods are respectively movably sleeved with the two groups of springs 2, and the two groups of springs 2 are fixedly connected to the outer rings of the lifting rods, and the upper ends of the two groups of springs 2 are fixedly connected to the inner cavity of the rotating shaft, the upper end of the lifting rod is fixedly connected with a pull plate, the upper end side of the rotating shaft is provided with a strip groove, and the pull plate is slidably connected in the strip groove.

7. The modular mixer with quick-change impeller according to claim 6, characterized in that: The middle outer ring and the lower outer ring of the lifting rod are respectively fixedly connected with convex plates, and the two groups of springs are respectively fixedly connected to the upper ends of the two groups of convex plates, and the convex plate located at the middle outer ring is a quadrilateral.

8. The modular mixer with quick-change impeller according to claim 6, characterized in that: The middle part of the lower end of the sealing cover is threadedly connected with an isolating sleeve, and the inner ring of the isolating sleeve is sleeved on the outer ring of the upper end of the rotating shaft and covers the outer side of the strip groove at the upper end of the rotating shaft.

9. The modular mixer with quick-change impeller according to claim 1, characterized in that: The lower end of the linkage shaft passes through the main body and extends out of the lower end of the main body. The timing component also includes a reflection plate, which is fixedly connected to the outside of the part of the linkage shaft extending out of the main body, and the reflection plate and the speed sensor are on the same horizontal line. An alarm and a protective cover are fixedly installed at the lower end of the main body, and a warning light is fixedly connected to the protective cover. The warning light and the alarm are electrically connected to the timer through a data line, and the timer is electrically connected to the speed sensor through the data line.

10. The modular mixer with quick-change impeller according to claim 9, characterized in that: A speaker slot is provided on the outer side of the protective cover at the position of the alarm.

Images