A pigment mixing device based on extrusion and agitation

Abstract

The application discloses a pigment mixing device based on extrusion and stirring, and relates to the technical field of pigment mixing.The device specifically comprises a mixing tank, a top of the mixing tank is provided with an end cover, a liquid material adding pipe is rotatably arranged in the mixing tank, a driving motor for driving the liquid material adding pipe to rotate is arranged at the bottom of the mixing tank, a rotating pipe joint is arranged at the bottom end of the liquid material adding pipe, a feeding pipe is arranged on the side of the rotating pipe joint, and a circulating pump is arranged at the middle of the feeding pipe.In the application, the powder is flushed by the extruded liquid material when being ground, so that the raw materials are mixed with the solvent layer by layer, the powder caking and clumping are avoided, the pigment particle distribution is uniform, the dispersion efficiency of the raw materials is improved, meanwhile, the dispersed raw materials and the solvent mixture enter the bottom of the mixing tank, and are stirred and dispersed under the action of a lower stirring mechanism and a layered stirring mechanism, so that the pigment mixing efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of pigment mixing technology, and more particularly to a pigment mixing apparatus based on extrusion and stirring. Background Technology

[0002] Pigments are substances that can color objects. Pigments can be soluble or insoluble, and can be inorganic or organic. Inorganic pigments are generally mineral-based substances; humans have known how to use inorganic pigments for a very long time, utilizing colored clay and minerals to paint on rock walls and apply to the body. Organic pigments are generally derived from plants and marine animals, such as indigo, gamboge, and the purple pigment extracted from shellfish in ancient Rome.

[0003] Pigments are mainly used in industries such as coatings, inks, printing and dyeing, plastic products, papermaking, rubber products, and ceramics. Many pigments are in powder form. They are insoluble in media such as water, oils, resins, and organic solvents, but can be uniformly dispersed in these media and can color them. However, many powder pigments are prone to caking during packaging and transportation, requiring dispersion treatment before application and then mixing. After dispersion, the pigment powder still needs to be transferred, during which the pigment is compressed, affecting the dispersion efficiency with the solvent.

[0004] In view of this, the present invention provides a pigment mixing device based on extrusion and stirring to solve the technical problems existing in the prior art. Summary of the Invention

[0005] Based on the technical problems existing in the background art, the present invention proposes a pigment mixing device based on extrusion and stirring.

[0006] This invention proposes a pigment mixing device based on extrusion and stirring, comprising a mixing tank, an end cap mounted on the top of the mixing tank, a liquid addition pipe rotatably mounted inside the mixing tank, and a drive motor mounted on the bottom of the mixing tank to rotate the liquid addition pipe. A rotary pipe joint is mounted at the bottom end of the liquid addition pipe, and a feed pipe is mounted on the side of the rotary pipe joint. A circulation pump is mounted in the middle of the feed pipe. A powder addition pipe is mounted on the top of the end cap, and multiple feeding branch pipes are mounted on the side of the powder addition pipe. A powder addition mechanism is mounted on the top of the powder addition pipe, and an upper dispersion disc is mounted on the bottom of the powder addition pipe. The bottom of the mixing tank is provided with a dense array of upper grinding protrusions. The top of the liquid material adding pipe is equipped with a lower dispersing disc, and the top of the lower dispersing disc is provided with a dense array of lower grinding grooves. The top of the lower dispersing disc is provided with a conical protrusion extending into the interior of the powder adding pipe, and the edge of the conical protrusion is provided with multiple extrusion holes communicating with the liquid material adding pipe. The bottom of the mixing tank is provided with multiple perforations, and an annular collecting mechanism is installed inside the perforations. The bottom of the annular collecting mechanism is connected to the inlet of the circulating pump through a pipe. The bottom of the outer side of the liquid material adding pipe is provided with a lower stirring mechanism distributed in a multi-layered annular structure, and the outer side of the liquid material adding pipe is provided with multiple layered stirring mechanisms.

[0007] Preferably, in this invention, the powder adding mechanism includes a cover installed on the top of the powder adding tube, and an electric telescopic rod is installed on the top of the cover. A pressing hammer that moves up and down inside the powder adding tube is installed at the bottom of the electric telescopic rod. Multiple scraping grooves are provided on the outside of the pressing hammer, and a peeling blade with an annular structure is provided at the bottom of the pressing hammer.

[0008] Preferably, in this invention, the powder adding mechanism further includes an internally threaded sleeve installed inside the cover, and the top of the pressing hammer is provided with a rotating component that is screwed to the internally threaded sleeve, and the top of the rotating component is rotatably connected to the bottom of the electric telescopic rod.

[0009] Preferably, in this invention, the annular collecting mechanism includes an annular pipe installed on the outside of the mixing tank and an annular cover installed on the top of the annular pipe. The annular collecting mechanism also includes a plurality of collecting troughs installed on the bottom wall of the mixing tank.

[0010] Preferably, in this invention, the lower stirring mechanism includes a support ring located in the inner layer and a limiting ring located in the outer layer, and a plurality of lower stirring rods are provided between the support ring and the limiting ring, with two inclined material guiding surfaces provided on the top of the lower stirring rods.

[0011] Preferably, in this invention, the annular collecting mechanism further includes a spiral-shaped pusher blade rotatably installed inside the collecting trough, and a driven gear is installed at the outer end of the pusher blade, and a drive gear ring that meshes with the driven gear is provided at the bottom of the support ring.

[0012] Preferably, in this invention, the lower stirring mechanism further includes a plurality of limiting hinge seats installed on the inner wall of the limiting ring, and the ends of the limiting hinge seats are hinged to a plurality of vertically arranged guide paddles.

[0013] Preferably, in this invention, the layered agitation mechanism includes two hinged shafts mounted on the surface of the liquid addition pipe, and each hinged shaft has a V-shaped shearing plate mounted on its shaft end. Each pair of shearing plates has a sealing edge that fits against each other, and a C-shaped vortex cavity is provided between each pair of shearing plates.

[0014] Preferably, in this invention, the layered stirring mechanism further includes a trapezoidal groove disposed on the surface of the shear plate, and multiple steel wires are installed between each pair of shear plates.

[0015] Compared with the prior art, the present invention provides a pigment mixing device based on extrusion and stirring, which has the following beneficial effects:

[0016] In this invention, during pigment mixing, solvent is first added into the device, and a circulation pump is started to rapidly circulate the solvent. The device is equipped with corresponding upper and lower dispersion discs. The lower dispersion disc rotates under the drive of a motor, and the upper grinding protrusions and lower grinding grooves form a powder dispersion chamber. Different pigment raw materials are added in batches through feeding branch pipes. The raw materials enter the powder addition pipe and are added to the powder dispersion chamber area under the action of the powder addition mechanism. Next, the liquid material in this device is extruded and diffused outward in an umbrella shape from multiple extrusion holes connected to the liquid addition pipe in the powder dispersion chamber area. At this time, the powder is washed by the extruded liquid material during grinding, so that the raw materials are mixed with the solvent layer by layer, avoiding powder agglomeration and uneven distribution of pigment particles, and accelerating the dispersion efficiency of raw materials. At the same time, the dispersed raw material and solvent mixture enters the bottom of the mixing tank, where it is stirred and dispersed under the action of the lower stirring mechanism and the layered stirring mechanism. While the pigment is being stirred, it is drawn from the annular collecting mechanism and continuously extruded from the extrusion holes, accelerating the pigment mixing efficiency. Attached Figure Description

[0017] Figure 1 This is a cross-sectional schematic diagram of a pigment mixing device based on extrusion and stirring proposed in this invention;

[0018] Figure 2 This is a side view of a pigment mixing device based on extrusion and stirring proposed in this invention.

[0019] Figure 3 This is a bottom view schematic diagram of a pigment mixing device based on extrusion and stirring proposed in this invention;

[0020] Figure 4This is a schematic diagram of the upper grinding protrusion distribution structure of a pigment mixing device based on extrusion and stirring proposed in this invention;

[0021] Figure 5 This is a schematic diagram of the lower dispersion disk structure of a pigment mixing device based on extrusion and stirring proposed in this invention;

[0022] Figure 6 This is a schematic diagram of the powder addition mechanism of a pigment mixing device based on extrusion and stirring proposed in this invention;

[0023] Figure 7 This is a schematic diagram of the extrusion orifice structure of a pigment mixing device based on extrusion and stirring proposed in this invention;

[0024] Figure 8 This is a schematic diagram of the layered stirring mechanism distribution structure of a pigment mixing device based on extrusion and stirring proposed in this invention;

[0025] Figure 9 This is a schematic diagram of the layered stirring mechanism of a pigment mixing device based on extrusion and stirring proposed in this invention;

[0026] Figure 10 This is an enlarged schematic diagram of the layered stirring mechanism of a pigment mixing device based on extrusion and stirring proposed in this invention;

[0027] Figure 11 This is a schematic diagram of the annular collecting mechanism and the lower stirring mechanism of a pigment mixing device based on extrusion and stirring proposed in this invention;

[0028] Figure 12 This is a schematic diagram of the lower stirring mechanism of a pigment mixing device based on extrusion and stirring proposed in this invention;

[0029] Figure 13 This is a schematic diagram of the annular collecting mechanism of a pigment mixing device based on extrusion and stirring proposed in this invention.

[0030] In the diagram: 1 Mixing tank, 2 End cap, 3 Feeding branch pipe, 4 Powder adding pipe, 5 Powder adding mechanism, 51 Sealing cap, 52 Electric telescopic rod, 53 Internal threaded sleeve, 54 Rotating component, 55 Pressing hammer, 6 Circulating pump, 7 Feed pipe, 8 Annular collecting mechanism, 81 Annular pipe, 82 Annular cover, 83 Collecting trough, 84 Pushing blade, 85 Driven gear, 9 Rotary pipe joint, 10 Drive motor, 11 Lower stirring mechanism, 111 Support ring, 112 Limiting ring, 113 Limiting hinge seat, 114 Guide blade, 115 Lower stirring rod, 12 Layered stirring mechanism, 121 Hinge shaft, 122 Shearing plate, 123 Trapezoidal groove, 124 Vortex cavity, 125 Steel wire, 13 Lower dispersing disc, 14 Upper dispersing disc, 15 Liquid adding pipe, 16 Upper grinding protrusion, 17 Lower grinding groove, 18 Extrusion hole. Detailed Implementation

[0031] The embodiments of this patent are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.

[0032] Reference Figure 1-13 A pigment mixing device based on extrusion and stirring includes a mixing tank 1, an end cap 2 mounted on the top of the mixing tank 1, a liquid addition pipe 15 rotatably mounted inside the mixing tank 1, and a drive motor 10 mounted at the bottom of the mixing tank 1 to rotate the liquid addition pipe 15. A rotary pipe joint 9 is mounted at the bottom end of the liquid addition pipe 15, a feed pipe 7 is mounted on the side of the rotary pipe joint 9, a circulation pump 6 is mounted in the middle of the feed pipe 7, a powder addition pipe 4 is mounted on the top of the end cap 2, multiple feeding branch pipes 3 are mounted on the side of the powder addition pipe 4, a powder addition mechanism 5 is mounted on the top of the powder addition pipe 4, and an upper dispersing disc 14 is mounted on the bottom of the powder addition pipe 4. The liquid addition pipe 15 is equipped with a densely distributed upper grinding protrusion 16. A lower dispersion plate 13 is installed on the top of the liquid addition pipe 15, and a densely distributed lower grinding groove 17 is provided on the top of the lower dispersion plate 13. A conical protrusion extending into the powder addition pipe 4 is provided on the top of the lower dispersion plate 13, and multiple extrusion holes 18 communicating with the liquid addition pipe 15 are provided on the edge of the conical protrusion. Multiple perforations are provided at the bottom of the mixing tank 1, and an annular collecting mechanism 8 is installed inside the perforations. The bottom of the annular collecting mechanism 8 is connected to the inlet of the circulating pump 6 through a pipe. A lower stirring mechanism 11 with a multi-layered annular structure is provided on the bottom of the outer side of the liquid addition pipe 15, and multiple layered stirring mechanisms 12 are provided on the outer side of the liquid addition pipe 15.

[0033] In this invention, during pigment mixing, solvent is first added into the device, and the circulation pump 6 is started to rapidly circulate the solvent. The device is equipped with corresponding upper dispersion disc 14 and lower dispersion disc 13. The lower dispersion disc 13 rotates under the drive of the drive motor 10. The powder dispersion chamber is formed by the upper grinding protrusion 16 and the lower grinding groove 17. Different pigment raw materials are added in batches through the feeding branch pipe 3. The raw materials enter the powder adding pipe 4 and are added to the powder dispersion chamber area under the action of the powder adding mechanism 5. Secondly, in this device, liquid material is connected to multiple liquid material adding pipes 15. The extrusion orifice 18 extends outward in an umbrella-shaped pattern within the powder dispersion chamber area. During grinding, the powder is washed by the extruded liquid, causing the raw materials to mix with the solvent layer by layer. This prevents the powder from clumping or agglomerating, which would result in uneven pigment particle distribution and accelerates the dispersion efficiency of the raw materials. Simultaneously, the dispersed raw material and solvent mixture enters the bottom of the mixing tank 1, where it is stirred and dispersed under the action of the lower stirring mechanism 11 and the layered stirring mechanism 12. While the pigment is being stirred, it is drawn from the annular collecting mechanism 8 and continuously extruded from the extrusion orifice 18, further accelerating the pigment mixing efficiency.

[0034] As a further embodiment of the present invention, the powder adding mechanism 5 includes a cover 51 installed on the top of the powder adding tube 4, and an electric telescopic rod 52 is installed on the top of the cover 51. A pressing hammer 55 that moves up and down inside the powder adding tube 4 is installed at the bottom of the electric telescopic rod 52. Multiple scraping grooves are provided on the outside of the pressing hammer 55, and a peeling blade with an annular structure is provided at the bottom of the pressing hammer 55. In the present invention, the pressing hammer 55 moves up and down inside the powder adding tube 4 under the action of the electric telescopic rod 52. While the pressing hammer 55 is reciprocating, the scraping grooves and peeling blade on the surface quickly push the raw materials added by the feeding branch tube 3 down layer by layer, completing the initial dispersion of the raw materials, and controlling the feeding speed of the raw materials, thereby improving the pigment mixing efficiency.

[0035] As a further embodiment of the present invention, the powder adding mechanism 5 also includes an internally threaded sleeve 53 installed inside the cover 51, and the top of the pressing hammer 55 is provided with a rotating part 54 that is screwed to the internally threaded sleeve 53. The top of the rotating part 54 is rotatably connected to the bottom of the electric telescopic rod 52. In the present invention, during the up-and-down movement of the pressing hammer 55, under the screwing action of the rotating part 54 and the internally threaded sleeve 53, the pressing hammer 55 rotates rapidly, and then the pressing hammer 55 moves up and down in a spiral shape inside the powder adding tube 4, which accelerates the uniformity of pigment peeling by the pressing hammer 55. Under the action of centrifugal force, the peeled raw materials are prevented from staying in the scraping groove, thereby improving the efficiency of raw material dispersion and addition.

[0036] As a further embodiment of the present invention, the annular collecting mechanism 8 includes an annular pipe 81 installed on the outside of the mixing tank 1 and an annular cover 82 installed on the top of the annular pipe 81. The annular collecting mechanism 8 also includes a plurality of collecting troughs 83 installed on the bottom wall of the mixing tank 1. In the present invention, the material in the annular collecting mechanism 8 is collected by the plurality of collecting troughs 83 set at the bottom of the mixing tank 1. During the pigment mixing process, the pigment at the bottom layer is quickly replaced by the collecting troughs 83, thereby improving the mixing efficiency between pigment components.

[0037] As a further embodiment of the present invention, the lower stirring mechanism 11 includes a support ring 111 located in the inner layer and a limiting ring 112 located in the outer layer, and a plurality of lower stirring rods 115 are arranged between the support ring 111 and the limiting ring 112. The top of the lower stirring rods 115 is provided with two inclined material guiding surfaces. In the present invention, when the lower stirring mechanism 11 rotates with the liquid addition pipe 15, the lower stirring rods 115 quickly stir the pigment located at the bottom layer. The inclined material guiding surfaces guide the pigment at the bottom layer upward, accelerating the exchange movement between the upper and lower layers of pigment.

[0038] As a further embodiment of the present invention, the annular collecting mechanism 8 also includes a spiral-shaped pusher blade 84 rotatably installed inside the collecting trough 83, and a driven gear 85 is installed at the outer end of the pusher blade 84. The bottom of the support ring 111 is provided with a drive gear ring that meshes with the driven gear 85. In the present invention, when the lower stirring mechanism 11 rotates rapidly, the pusher blade 84 located inside the collecting trough 83 is driven to rotate rapidly through the transmission of the drive gear ring and the driven gear 85, pushing the outer layer of pigment inside the collecting trough 83 into the annular tube 81, and generating multiple outwardly diffused solution flows at the bottom of the mixing tank 1, accelerating the exchange movement between pigments. Secondly, the rotation and squeezing of the pusher blade 84 reduces the total number of bubbles in the solution during pigment circulation, further improving the mixing efficiency between pigments.

[0039] As a further embodiment of the present invention, the lower stirring mechanism 11 also includes a plurality of limiting hinge seats 113 installed on the inner wall of the limiting ring 112, and the ends of the limiting hinge seats 113 are hinged to a plurality of vertically arranged guide paddles 114. When the lower stirring mechanism 11 rotates rapidly, the plurality of guide paddles 114 located on the inner wall of the limiting ring 112 generate tilting motion under the action of pigment resistance, scraping the pigment located on the outer layer of the bottom of the mixing tank 1 towards the center. Under the reverse push of the pusher blades 84, the movement and exchange of pigment inside the mixing tank 1 is accelerated, further improving the mixing efficiency between pigment components and reducing the phenomenon of pigment sticking to the wall.

[0040] As a further embodiment of the present invention, the layered agitation mechanism 12 includes two hinge shafts 121 mounted on the surface of the liquid addition pipe 15, and each hinge shaft 121 has a V-shaped shear plate 122 mounted on its shaft end. Each pair of shear plates 122 has a sealing edge that fits together at its edge, and a C-shaped vortex cavity 124 is provided between each pair of shear plates 122. In the present invention, the layered agitation mechanism 12 is composed of two symmetrically distributed shear plates 122. Under the resistance of the pigment and the rotation angle limitation of the hinge shafts 121, the two shear plates 122 form a spindle-shaped structure, which quickly shears the passing pigment and forms a vortex at the tail opening, which accelerates the movement and mixing of pigments and agitates the pigments in layers, further improving the mixing efficiency of pigments.

[0041] As a further embodiment of the present invention, the layered stirring mechanism 12 also includes a trapezoidal groove 123 disposed on the surface of the shear plate 122, and multiple steel wires 125 are installed between each pair of shear plates 122. In the present invention, when the front end of the shear plate 122 is closed under the action of resistance, the pigment is squeezed from the trapezoidal groove 123 into the vortex cavity 124 and tumbles. The steel wires 125 located inside the vortex cavity 124 generate arc-shaped bends when the shear plate 122 is in the open and closed state. The thin steel wires 125 perform vertical shearing motion on the pigment, quickly disperse the particles in the pigment, and further improve the mixing efficiency between pigment components.

[0042] During use, when mixing pigments, the solvent is first added into the device, and the circulation pump 6 is started to make the solvent circulate quickly. Different pigment raw materials are added in batches through the feeding branch pipe 3. The raw materials enter the powder adding pipe 4 and are added to the powder dispersion chamber area under the action of the powder adding mechanism 5. Next, the liquid material in this device is extruded and diffused outward in an umbrella shape from the multiple extrusion holes 18 connected by the liquid adding pipe 15 in the powder dispersion chamber area. At this time, the powder is washed by the extruded liquid material during grinding, so that the raw materials are mixed with the solvent layer by layer, avoiding the powder from clumping and causing uneven distribution of pigment particles, and accelerating the dispersion efficiency of raw materials. At the same time, the dispersed raw materials and solvent mixture enters the bottom of the mixing tank 1, and is stirred and dispersed under the action of the lower stirring mechanism 11 and the layer stirring mechanism 12. While the pigment is being stirred, it is drawn from the annular collecting mechanism 8 and continuously extruded from the extrusion holes 18, which accelerates the pigment mixing efficiency.

[0043] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A pigment mixing device based on extrusion and stirring, comprising a mixing tank (1), an end cap (2) installed on the top of the mixing tank (1), a liquid material adding pipe (15) rotatably installed inside the mixing tank (1), and a drive motor (10) for rotating the liquid material adding pipe (15) installed at the bottom of the mixing tank (1), a rotary pipe joint (9) installed at the bottom end of the liquid material adding pipe (15), a feed pipe (7) installed on the side of the rotary pipe joint (9), a circulating pump (6) installed in the middle of the feed pipe (7), a powder adding pipe (4) installed on the top of the end cap (2), and a plurality of feeding branch pipes (3) installed on the side of the powder adding pipe (4), characterized in that, A powder adding mechanism (5) is installed at the top of the powder adding tube (4), and an upper dispersing disc (14) is installed at the bottom of the powder adding tube (4). The bottom of the upper dispersing disc (14) is provided with densely distributed upper grinding protrusions (16). A lower dispersing disc (13) is installed at the top of the liquid adding tube (15), and the top of the lower dispersing disc (13) is provided with densely distributed lower grinding grooves (17). The top of the lower dispersing disc (13) is provided with a conical protrusion extending into the interior of the powder adding tube (4). The edge of the conical protrusion is provided with multiple extrusion holes (18) that communicate with the liquid addition pipe (15). The bottom of the mixing tank (1) is provided with multiple perforations, and an annular collecting mechanism (8) is installed inside the perforations. The bottom of the annular collecting mechanism (8) is connected to the inlet of the circulating pump (6) through a pipe. The bottom of the outer side of the liquid addition pipe (15) is provided with a multi-layered annular structure of a lower stirring mechanism (11), and the outer side of the liquid addition pipe (15) is provided with multiple layered stirring mechanisms (12).

2. The pigment mixing device based on extrusion and stirring according to claim 1, characterized in that, The powder adding mechanism (5) includes a cover (51) installed on the top of the powder adding tube (4), and an electric telescopic rod (52) is installed on the top of the cover (51). A pressing hammer (55) that moves up and down inside the powder adding tube (4) is installed at the bottom of the electric telescopic rod (52). Multiple scraping grooves are provided on the outside of the pressing hammer (55), and a peeling blade with an annular structure is provided at the bottom of the pressing hammer (55).

3. The pigment mixing device based on extrusion and stirring according to claim 2, characterized in that, The powder adding mechanism (5) also includes an internally threaded sleeve (53) installed inside the cover (51), and the top of the pressing hammer (55) is provided with a rotating part (54) screwed to the internally threaded sleeve (53), and the top of the rotating part (54) is rotatably connected to the bottom of the electric telescopic rod (52).

4. The pigment mixing device based on extrusion and stirring according to claim 1, characterized in that, The annular collecting mechanism (8) includes an annular pipe (81) installed on the outside of the mixing tank (1) and an annular cover (82) installed on the top of the annular pipe (81). The annular collecting mechanism (8) also includes a plurality of collecting troughs (83) installed on the bottom wall of the mixing tank (1).

5. A pigment mixing device based on extrusion and stirring according to claim 4, characterized in that, The lower stirring mechanism (11) includes a support ring (111) located in the inner layer and a limiting ring (112) located in the outer layer. A plurality of lower stirring rods (115) are provided between the support ring (111) and the limiting ring (112), and the top of the lower stirring rods (115) is provided with two inclined material guiding surfaces.

6. A pigment mixing device based on extrusion and stirring according to claim 5, characterized in that, The annular collecting mechanism (8) further includes a spiral structure pusher blade (84) rotatably installed inside the collecting trough (83), and a driven gear (85) is installed at the outer end of the pusher blade (84). The bottom of the support ring (111) is provided with a drive gear ring that meshes with the driven gear (85).

7. A pigment mixing device based on extrusion and stirring according to claim 6, characterized in that, The lower stirring mechanism (11) also includes a plurality of limiting hinge seats (113) installed on the inner wall of the limiting ring (112), and the ends of the limiting hinge seats (113) are hinged to a plurality of vertically arranged guide paddles (114).

8. A pigment mixing device based on extrusion and stirring according to claim 1, characterized in that, The layered stirring mechanism (12) includes two hinge shafts (121) mounted on the surface of the liquid addition pipe (15), and each hinge shaft (121) has a V-shaped shear plate (122) mounted on its shaft end. Each pair of shear plates (122) has a sealing edge that fits together, and a C-shaped vortex cavity (124) is provided between each pair of shear plates (122).

9. A pigment mixing device based on extrusion and stirring according to claim 8, characterized in that, The layered stirring mechanism (12) also includes a trapezoidal groove (123) disposed on the surface of the shear plate (122), and multiple steel wires (125) are installed between each pair of shear plates (122).

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