Automatic proportioning and mixing machine for spraying raw materials

Abstract

This application discloses an automatic proportioning and mixing machine for spray coating raw materials. By installing multiple movable mixing components inside a mixing tube, the fluid entering the mixing tube is guided forward in a spiral motion by a spiral plate. Some of the fluid passes through perforations in the elastic plates of the spiral plate and moves axially. The impeller drives the multiple mixing components to rotate via a central rod, causing the elastic plates on the mixing components to continuously change in the circumferential direction. This results in the rotating spiral plate actively dragging, agitating, and forcibly reversing the fluid in the circumferential direction. Simultaneously, the circumferential position of the elastic plates also changes continuously. The position of the fluid passing through the perforations in the elastic plates, and the position of the fluid after passing through the perforations, are also constantly changing. This allows the guided, variable-direction fluid to undergo multi-point, multi-stream contact mixing at different points within a unit of time, breaking down the fluid boundary layer.

Description

Technical Field

[0001] This application relates to the field of raw material mixing technology, and in particular to an automatic proportioning and mixing machine for spray coating raw materials. Background Technology

[0002] The automatic proportioning and mixing machine for spray coating raw materials is a core piece of equipment for achieving precise proportioning, uniform mixing, and stable material supply of coatings. It is widely used in automated spray coating production lines for automotive parts, 3C products, and hardware products. Its mixing uniformity, adaptability to operating conditions, and operational stability directly determine the surface quality and coating performance of the sprayed products. It primarily uses a PLC control system to control different pumps to draw different raw materials from different tanks into the mixing device for efficient mixing before output processing.

[0003] Currently, in existing automatic proportioning and mixing machines for spray coating raw materials, the core component used to achieve coating mixing is mostly a static mixer. This type of static mixer usually has rigid blades with a fixed structure inside the pipe. It relies on the fixed torsion angle of the blades to divide and turbulent the fluid to achieve the mixing of multi-component coatings. In order to enhance the mixing effect, more manufacturers will replace the traditional rigid blades with more complex interlaced metal plates to enhance the division and improve the turbulence state in a short time.

[0004] However, these improved static mixers are still rigid structures. Their torsion angle and flow channel cross-sectional dimensions are fixed after design and installation. They can only achieve a relatively ideal mixing effect under the designed single flow rate condition. When facing different working conditions, they still have many shortcomings. For example, in the actual processing, when using an improved static mixer with a single staggered metal plate, under the condition that the raw material flow rate is less than 60 mL / min, because the fluid kinetic energy is small, it is difficult to generate sufficient shear force. This easily leads to the coating being in a laminar flow state, the flow channel being too dense, the resistance being large, and problems such as insufficient mixing and uneven component distribution will occur.

[0005] Under high flow rates greater than 400 mL / min, the fluid passes through the rigid blades rapidly, resulting in insufficient contact disturbance between the fluid and the rigid blades. Before effective mixing occurs, the fluid is discharged from the mixer, making it impossible to achieve stable and uniform mixing over a wide flow range. Summary of the Invention

[0006] This application proposes an automatic proportioning and mixing machine for spray coating raw materials, which has the advantages of adapting to multi-condition mixing, dynamic mixing liquid flow, and multi-directional turbulent liquid flow, in order to solve the problem that the static mixer in the existing mixer cannot effectively mix under different conditions.

[0007] To achieve the above objectives, this application adopts the following technical solution: an automatic mixing machine for spray coating raw materials, comprising a mixing tube, with multiple sets of mixing components disposed inside the mixing tube; multiple axially distributed annular limiting grooves are provided on the inner side wall of the mixing tube; the mixing components include a support ring disposed in the limiting groove, an impeller disposed inside the support ring, a shaft rod disposed on one side of the impeller, and a spiral plate disposed on the shaft rod; the spiral plate includes three metal plates and three elastic plates, with elastic plates disposed between adjacent metal plates, and multiple through holes provided on the elastic plates; two symmetrical collars I and a collar II located between the two collars I are disposed on the shaft rod, the side of the two metal plates near the shaft rod is respectively connected to the outer side of the collars I on both sides, and the side of the metal plate in the middle near the shaft rod is connected to the outer side of the collar II; a spring I is disposed between the opposite ends of the collars I and the collar II; two symmetrical sliding grooves are provided in the axial direction of the shaft rod, and symmetrical sliders are provided on the inner side wall of the collars I to insert into the sliding grooves.

[0008] Preferably, a feed pipe is provided on one side of the mixing pipe, and a converging pipe is provided on the other side. A discharge pipe is provided on the converging pipe. A connecting flange I is provided between the feed pipe and the mixing pipe, and a connecting flange II is provided between the mixing pipe and the converging pipe. A sealing flange is provided at the end of the converging pipe away from the mixing pipe.

[0009] Preferably, the width of the support ring is equal to the width of the limiting groove, and the thickness of the support ring is greater than the depth of the limiting groove.

[0010] Preferably, the outer wall of the spiral plate is close to the inner wall of the mixing tube.

[0011] Preferably, one end of one of the elastic plates away from the impeller is connected only to the metal plate away from the impeller, and the angle of the elastic plate in the circumferential direction is no more than 120 degrees.

[0012] Preferably, a crossbar is provided on the end of the support ring away from the feed pipe, and two circumferential guides are provided on the crossbar.

[0013] Preferably, the circumferential guide includes an arc-shaped circumferential baffle, a plurality of evenly distributed sliding sleeves disposed at the top of the circumferential baffle, and a spring II disposed between the opposite ends of two adjacent sliding sleeves. The circumferential baffle has inclined guide holes, with the inclined holes at the top of the circumferential baffle facing downwards and the inclined holes at the bottom of the circumferential baffle facing upwards.

[0014] Preferably, the crossbar extends through the metal plates on both sides connected to the collar I, and the end of the crossbar away from the support ring is close to the side wall of the support ring. The outer side of the metal plate connected to the collar II is provided with a movable groove, and the angle of the movable groove in the circumferential direction is no more than 20 degrees.

[0015] Preferably, the opposite ends of the spindles in adjacent hybrid components are connected.

[0016] Preferably, the three metal plates in a single hybrid component are staggered in the axial direction, and the three elastic plates are staggered in the axial direction.

[0017] This application provides an automatic proportioning and mixing machine for spray coating raw materials. By setting multiple movable mixing components inside the mixing tube, the mixing fluid, after entering the mixing tube, can first pass through the impeller in front of the mixing component. Under the guidance of the impeller blades, it undergoes a twist. Then, the fluid is guided by a single spiral plate to move forward in a spiral. At the same time, some fluid will pass through the perforations of the elastic plate on the spiral plate and move forward axially. This allows the spiral-moving liquid flow and the axial-moving liquid flow to impact and mix in different directions, thereby improving the mixing effect.

[0018] Simultaneously, as the fluid passes through the impeller, it impacts the impeller blades, causing the impeller to rotate. The faster the fluid velocity, the faster the impeller rotates. The impeller drives multiple mixing components to rotate via the central rod, causing the position of the elastic plate on each mixing component to continuously change in the circumferential direction. This results in the rotating spiral plate actively dragging, agitating, and forcibly reversing the fluid in the circumferential direction. At the same time, the circumferential position of the elastic plate also changes continuously. The position of the fluid that can pass through the holes in the elastic plate, as well as the position of the fluid after passing through the holes, are also constantly changing. This allows these guided and variable-direction fluids to undergo multi-point and multi-stream contact mixing at different points per unit time, breaking the fluid boundary layer.

[0019] Meanwhile, the faster the fluid velocity, the greater the impact force. At this time, the fluid will exert an axial impact force on the spiral plate. The presence of the elastic plate on the spiral plate allows the spiral plate to move to the same side under the impact force, causing the elastic plate to deform and the overall shape of the spiral plate to be compressed. Spring I is compressed and stores energy, the single-turn pitch decreases, the spiral helix angle decreases, and the torsion amplitude increases when the fluid flows through the spiral channel. Combined with the rotational motion of the spiral plate, the fluid shear disturbance and radial mixing are enhanced, effectively improving the problem of fluid being prone to direct rushing and insufficient mixing under high flow rate conditions. When the fluid impact force is small, spring I rebounds, the single-turn pitch increases, the spiral flow channel tends to be gentle, reducing fluid flow resistance and pressure loss, and preventing low-speed fluid from stagnating, adhering, and clogging.

[0020] Meanwhile, under high fluid impact force and reduced pitch, the perforations on the elastic plate can form axial diversion and pressure relief channels to offset the surge in pressure drop caused by the tightness of the spiral, balance the pipeline resistance, and the perforated direct fluid and spiral swirling flow mutually shear and collide, further enhancing the turbulent mixing effect. Under low fluid impact force and increased pitch, the perforations reduce the fluid bypass resistance, ensuring smooth flow under low flow conditions and avoiding fluid stagnation and accumulation. At the same time, the rotation of the elastic plate will drive the perforations to continuously cut the fluid circumferentially, generate micro-jets and local eddies, effectively destroy the fluid boundary layer and improve the radial micro-mixing uniformity.

[0021] Meanwhile, the middle part of a single spiral plate is connected to collar II. Collar II is not directly restricted circumferentially by the shaft rod. This means that when the shaft rod drives the single spiral plate to rotate at the part connected to collar I on both sides of collar II, collar II will not rotate synchronously in time. At this time, the elastic plates on both sides of the metal plate connected to collar II have torsional deformation due to the difference in circumferential motion between collar I and collar II. With the drag of the circumferential flow fluid, collar II is dragged to rotate. This causes the elastic plates on both sides of collar II on the single spiral plate to form an interlaced shape at a certain angle in the circumferential direction due to the difference in circumferential lag motion, forming a relative circumferential shear motion, which further improves the mixing effect under different flow conditions. Attached Figure Description

[0022] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, serve to explain the principles disclosed in this application.

[0023] This disclosure will become clearer with reference to the accompanying drawings and the following detailed description, wherein: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure distribution of the present invention; Figure 3 This is a schematic diagram of the hybrid tube structure of the present invention; Figure 4 This is a schematic diagram of the hybrid component structure of the present invention; Figure 5 This is a schematic diagram of the impeller structure of the present invention; Figure 6 This is a schematic diagram of the spiral plate structure of the present invention; Figure 7 This is a schematic diagram of the structure of collar I and collar II of the present invention; Figure 8 This is a schematic diagram of the circumferential guide structure of the present invention.

[0024] The components are as follows: 1. Feed pipe; 11. Mixing pipe; 12. Converging pipe; 13. Discharge pipe; 14. Connecting flange I; 15. Connecting flange II; 16. Sealing flange; 2. Limiting groove; 3. Support ring; 31. Impeller; 32. Shaft rod; 33. Slide groove; 4. Collar I; 41. Slider; 42. Spring I; 5. Collar II; 6. Metal plate; 61. Elastic plate; 62. Movable groove; 7. Crossbar; 71. Sliding sleeve; 72. Spring II; 73. Circumferential baffle. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0026] Example 1 Please see Figures 1 to 3 An automatic proportioning and mixing machine for spray coating raw materials includes a feed pipe 1, a mixing pipe 11 on one side of the feed pipe 1, a converging pipe 12 on one side of the mixing pipe 11, and a discharge pipe 13 fixedly connected to the converging pipe 12.

[0027] This allows raw materials of different components to enter the mixing pipe 11 through the feed pipe 1 for mixing, and then be fed into the converging pipe 12 and discharged from the discharge pipe 13.

[0028] A connecting flange I 14 is bolted between the opposite ends of the feed pipe 1 and the mixing pipe 11, a connecting flange II 15 is bolted between the opposite ends of the mixing pipe 11 and the converging pipe 12, and a sealing flange 16 is bolted to the end of the converging pipe 12 away from the mixing pipe 11.

[0029] This allows the pipes to be fixedly connected via flanges, preventing material leakage.

[0030] The mixing tube 11 is fixed by two symmetrical half-pipe bolts.

[0031] This allows the mixing tube 11 to be easily opened, enabling the installation and collection of the mixing components inside the mixing tube 11.

[0032] A limiting groove 2 is evenly distributed axially on the inner wall of the mixing pipe 11. The limiting groove 2 is circumferentially annular.

[0033] See Figure 2 Multiple mixing components are movably sleeved inside the mixing tube 11. Each mixing component includes a central shaft 32, an impeller 31 fixedly sleeved on one end of the shaft 32 near the feed tube 1, a support ring 3 fixedly sleeved on the outside of the impeller 31, and a spiral plate movably sleeved on the outside of the shaft 32.

[0034] This allows the raw material to impact the blades of impeller 31 after passing through it, causing impeller 31 to rotate and thus the entire mixing component to rotate. It should be noted that the greater the impact force of the raw material, the faster the impeller 31 will rotate, in order to overcome the resistance of the mixing component and rotate effectively. If the impact force of the raw material is too small, it will not be able to overcome the resistance, and the mixing component will not rotate.

[0035] Although the impact force of the raw material is insufficient to drive the impeller 31 to rotate, it can still be guided by the blades of the impeller 31 to perform a limited twist. The rotating impeller 31 will cause more intense twisting and agitation of the raw material.

[0036] The support ring 3 is movably fitted into the limiting groove 2, and the width of the support ring 3 is equal to the width of the limiting groove 2, and the thickness of the support ring 3 is greater than the depth of the limiting groove 2, so that the limiting groove 2 can restrict the support ring 3, causing the support ring 3 and the impeller 31 fixedly connected to the support ring 3 to only perform circumferential rotation.

[0037] See Figure 2 , Figures 4 to 6 The spiral plate includes three metal plates 6 and three elastic plates 61. Elastic plates 61 are fixedly connected between adjacent metal plates 6. One end of the elastic plate 61 that is away from the impeller 31 is fixedly connected only to the metal plate 6 that is away from the impeller 31.

[0038] The outer wall of the spiral plate is close to the inner wall of the mixing tube 11.

[0039] This allows the raw materials to be guided by the spiral plate after reaching the mixing component, and to move forward in a spiral. When the impeller 31 is subjected to an impact force that drives the entire mixing component to rotate, the spiral plate will also rotate, so that the spiral plate actively applies dragging, stirring and forced reversal to the fluid.

[0040] It should be noted that, due to its elasticity, the elastic plate 61 will deform in the direction of impact when subjected to the impact force of the fluid. The greater the impact force, the greater the deformation, until it reaches the maximum deformation state. After the elastic plate 61 deforms, pits will appear on the original planar spiral surface of the spiral plate. These pits will force the nearby fluid to generate desulfurization, flow around, and local eddies, further disrupting the laminar flow state of the fluid and significantly improving the mixing at the micro level.

[0041] Furthermore, these pits can also form local energy storage buffers, reducing the instantaneous pressure drop and impact load on the pipeline, which is more pronounced when dealing with high-velocity fluids.

[0042] The elastic plate 61, which is far from the impeller 31, is fixed at only one end by the nearby metal plate 6. When the elastic plate 61 is subjected to the impact force of the liquid flow, it will undergo a large deflection deformation. The greater the impact force of the liquid flow, the greater the deflection deformation, which will expand the effective passage area of ​​the mixing pipe 11. Conversely, it will shrink the effective passage area of ​​the mixing pipe 11.

[0043] Multiple perforations are provided on the elastic plate 61, allowing fluid to pass through the perforations to form multiple axial streams, which can mix and contact with the spiral liquid flow in multiple directions and at multiple points. In particular, as the elastic plate 61 rotates, the positions of these perforations are constantly changing. That is to say, at this time, liquid flow at different positions has the opportunity to pass through the perforations, and the landing point of the liquid flow after passing through the perforations is also constantly changing, further increasing the multi-point complexity of the liquid flow. Combined with the different degrees of pits on the elastic plate 61, multiple superpositions of direct liquid flow and swirling vortex flow are formed.

[0044] The angle of the elastic plate 61 in the circumferential direction is no more than 120 degrees, which allows the elastic plate 61 to cover a large circumferential area, increasing the probability and location of direct liquid flow and enhancing the effective area of ​​the swirling vortex.

[0045] The three metal plates are aligned in the axial direction.

[0046] The three elastic plates 61 are aligned in the axial direction.

[0047] See Figure 2 , Figure 4 , Figures 6 to 7 Two symmetrical collars I4 are sleeved on the shaft 32. A collar II5 is movably sleeved on the shaft 32 between the two collars I4. The two metal plates 6 on both sides are fixedly connected to the outer side of the collars I4 on both sides on the side closest to the shaft 32, and the metal plate 6 in the middle is fixedly connected to the outer side of the collar II5 on the side closest to the shaft 32.

[0048] This allows the entire spiral plate to form an effective spiral state on the outside of the shaft rod 32 through the connection with collar I4 and collar II5.

[0049] Two symmetrical grooves 33 are provided in the axial direction of the shaft rod 32. Symmetrical sliders 41 are fixedly connected to the inner side wall of the collar I4. The sliders 41 are axially slidably connected in the grooves 33.

[0050] This allows the slide groove 33 to restrict the slider 41, allowing it to move axially only within the slide groove 33. Furthermore, when the shaft rod 32 rotates, the slide groove 33 acts on the slider 41, causing the collar I4 to rotate synchronously, thereby causing the metal plate 6 connected to the collar I4 to rotate synchronously.

[0051] It should be noted that at this time, since the collar II5 is not circumferentially restricted by the shaft 32, the collar II5 will not rotate synchronously with the shaft 32. Instead, the elastic plates 61 on both sides of the metal plate 6 connected to the collar II5 will rotate due to the difference in circumferential motion between the collar I4 and the collar II5, which causes torsional deformation. This, combined with the drag of the circumferentially flowing fluid, will cause the elastic plates 61 on both sides of the collar II5 on a single spiral plate to form an interlaced shape at a certain angle in the circumferential direction due to the difference in circumferential lag motion, thus forming a relative circumferential shear motion and further improving the mixing effect under different flow conditions.

[0052] A spring I42 is fixedly connected between the opposite ends of collar I4 and collar II5, and spring I42 is movably sleeved on the shaft 32.

[0053] When the fluid impacts the spiral plate, it pushes the spiral plate to the side away from the feed pipe 1, causing the elastic plate 61 to deform. This results in a reduction in the pitch of the spiral plate and compression of the spring I 42. The greater the fluid impact force, the smaller the pitch, until the compression limit of the spring I 42 is reached. When the impact force increases, the pitch per turn decreases and the helix angle decreases. The torsion amplitude of the fluid flowing through the spiral channel increases. Combined with the rotational motion of the spiral plate, this enhances the shear disturbance and radial mixing of the fluid, effectively improving the problem of fluid rushing directly and insufficient mixing under high flow rate conditions. When the fluid impact force is small, the spring I 42 rebounds, the pitch per turn increases, and the spiral flow channel becomes smoother, reducing fluid flow resistance and pressure loss, and preventing low-speed fluid from stagnating, adhering, and clogging.

[0054] The elastic plate 61 is made of a corrosion-resistant and wear-resistant elastic material.

[0055] It should be noted that the multiple mixing components in Example 1 operate independently. In other words, the rotation speed of the multiple mixing components will vary due to factors such as changes in fluid impact force, changes in fluid flow direction, and resistance magnitude. This will enhance the diversity of internal mixing conditions.

[0056] Example 2 Please see Figure 2 , Figure 4 , Figure 8 Based on Embodiment 1, a crossbar 7 is fixedly connected to the end of the support ring 3 away from the feed pipe 1, and two circumferential guides are movably sleeved on the crossbar 7.

[0057] See Figure 8 The circumferential guide includes an arc-shaped circumferential baffle 73, a plurality of axially evenly distributed sliding sleeves 71 fixedly connected to the top of the circumferential baffle 73, and a spring II 72 fixedly connected between the opposite ends of two adjacent sliding sleeves 71.

[0058] Spring II 72 is movably sleeved on the crossbar 7, so that when the pitch between the spiral plates decreases, the surface of the spiral plates can squeeze the circumferential baffle 73, causing the circumferential baffle 73 to compress and deform. Due to the extra space between the sliding sleeves 71, the circumferential baffle 73 can form wrinkles. At this time, spring II 72 is compressed. When the pitch of the spiral plates increases, the compressed spring II 72 can push the sliding sleeves 71, causing the circumferential baffle 73 to return to its original shape.

[0059] The crossbar 7 moves through the metal plates 6 on both sides connected to the collar I4, and the end of the crossbar 7 away from the support ring 3 is close to the side wall of the support ring 3, so that when the spiral plate rotates with the support ring 3, the crossbar 7 will not affect the normal movement of the metal plate 6, and prevent the spiral plate from detaching from the crossbar 7 when it undergoes axial deformation.

[0060] The metal plate 6 connected to the collar II5 has a movable groove 62 on its outer side. The angle of the movable groove 62 in the circumferential direction is no more than 20 degrees, so that the metal plate 6 rotating at a differential speed in the middle of the single spiral plate will not be blocked by the crossbar 7 when it rotates.

[0061] An inclined guide hole is provided on the circumferential baffle 73. The guide hole near the inner wall of the mixing tube 11 is inclined toward the axis of the mixing tube 11 in the direction of fluid spiral flow.

[0062] The circumferential baffle 73 is arc-shaped, and the concave surface of the arc faces the direction of fluid flow.

[0063] The fluid spiraling forward between the pitches of the spiral plates can impact the concave surface of the circumferential baffle 73, causing the circumferential baffle 73 to be pushed upward about the crossbar 7. Note that the greater the fluid impact force, the greater the angle at which the circumferential baffle 73 is raised. After the impact force weakens, the circumferential baffle 73 will fall back under its own weight.

[0064] When the circumferential baffle 73 is not raised, the spiral-forward liquid flow will pass through the guide hole and be guided by the guide hole. The fluid near the axis of the mixing tube 11 is guided towards the inner wall of the mixing tube 11, and the fluid near the inner wall of the mixing tube 11 is guided towards the axis of the mixing tube 11, so that the fluid can be transported in the circumferential direction.

[0065] When the circumferential baffle 73 is lifted, the greater the lifting angle, the greater the overlap angle between it and the elastic plate 61 in the axial direction. At this time, the guided fluid changes direction due to the change in the angle of the circumferential baffle 73. The streams guided by the guide holes will intersect with the streams passing through the holes in the elastic plate 61, further improving the mixing effect. During this process, the circumferential baffle 73 will also rotate with the mixing component. Different positions, different centers of gravity, and resistance of the circumferential baffle 73 during rotation will cause the angle to deflect. That is to say, even with the same liquid flow impact force, the rotation angle of the circumferential baffle 73 will be different, further aggravating the diversity of the liquid flow.

[0066] The circumferential baffle 73 is made of a corrosion-resistant and wear-resistant elastic material.

[0067] Example 3 Based on Embodiment 1 and Embodiment 2, the difference from Embodiment 1 is that the opposite ends of the shaft rods 32 in adjacent mixing components are fixedly connected, so that the different fluid impact forces on the impellers 31 of all mixing components can act on the whole at the same time.

[0068] Example 4 Based on Embodiments 1, 2, and 3, the difference from Embodiments 1 and 3 is that the three metal plates 6 in a single mixing component are staggered in the axial direction, and the three elastic plates 61 are staggered in the axial direction with an angle of no more than 60 degrees. This strengthens the staggered arrangement of the elastic plates 61, making the position of the liquid flow after passing through the perforation more complex and variable.

Claims

1. A spray material automatic proportioning mixer, characterized in that, Includes a mixing tube (11), and multiple mixing components are provided inside the mixing tube (11); Multiple axially distributed annular limiting grooves (2) are provided on the inner wall of the mixing tube (11). The mixing component includes a support ring (3) disposed in the limiting groove (2), an impeller (31) disposed inside the support ring (3), a shaft rod (32) disposed on one side of the impeller (31), and a spiral plate disposed on the shaft rod (32); The spiral plate includes three metal plates (6) and three elastic plates (61), with elastic plates (61) provided between adjacent metal plates (6), and multiple perforations on the elastic plates (61); Two symmetrical collars I (4) and a collar II (5) located between the two collars I (4) are provided on the shaft (32). The two metal plates (6) are connected to the outer side of the collars I (4) on both sides respectively on the side near the shaft (32), and the metal plate (6) in the middle is connected to the outer side of the collar II (5) on the side near the shaft (32). A spring I (42) is provided between the opposite ends of collar I (4) and collar II (5); Two symmetrical grooves (33) are opened in the axial direction of the shaft (32), and symmetrical sliders (41) are provided on the inner side wall of the collar I (4) to insert into the grooves (33).

2. The automatic proportioning and mixing machine for spray materials according to claim 1, characterized in that, A feed pipe (1) is provided on one side of the mixing pipe (11), and a converging pipe (12) is provided on the other side. A discharge pipe (13) is provided on the converging pipe (12). A connecting flange I (14) is provided between the feed pipe (1) and the mixing pipe (11). A connecting flange II (15) is provided between the mixing pipe (11) and the converging pipe (12). A sealing flange (16) is provided at the end of the converging pipe (12) away from the mixing pipe (11).

3. The automatic proportioning and mixing machine for spray material according to claim 1, characterized in that, The width of the support ring (3) is equal to the width of the limiting groove (2), and the thickness of the support ring (3) is greater than the depth of the limiting groove (2).

4. The automatic proportioning and mixing machine for spray materials according to claim 1, characterized in that, The outer wall of the spiral plate is close to the inner wall of the mixing tube (11).

5. The automatic proportioning and mixing machine for spray material according to claim 1, characterized in that, One end of one of the elastic plates (61) that is far from the impeller (31) is connected only to the metal plate (6) that is far from the impeller (31), and the angle of the elastic plate (61) in the circumferential direction is no more than 120 degrees.

6. The automatic proportioning and mixing machine for spray materials according to claim 3, characterized in that, A crossbar (7) is provided on the end of the support ring (3) away from the feed pipe (1), and two circumferential guides are provided on the crossbar (7).

7. The automatic proportioning and mixing machine for spray material according to claim 6, characterized in that, The circumferential guide includes an arc-shaped circumferential baffle (73), a plurality of evenly distributed sliding sleeves (71) disposed at the top of the circumferential baffle (73), and a spring II (72) disposed between the opposite ends of two adjacent sliding sleeves (71). The circumferential baffle (73) has an inclined guide hole, with the inclined hole at the top of the circumferential baffle (73) facing downward and the inclined hole at the bottom facing upward.

8. The automatic proportioning and mixing machine for spray material according to claim 7, characterized in that, The crossbar (7) moves through the metal plates (6) on both sides connected to the collar I (4), and the end of the crossbar (7) away from the support ring (3) is close to the side wall of the support ring (3). The metal plate (6) connected to the collar II (5) has a movable groove (62) on the outside. The angle of the movable groove (62) in the circumferential direction is no more than 20 degrees.

9. The automatic proportioning and mixing machine for spray coating raw materials according to claim 1, characterized in that, The opposite ends of the spindle (32) in the adjacent hybrid parts are connected.

10. The automatic proportioning and mixing machine for spray coating raw materials according to claim 1, characterized in that, The three metal plates (6) in a single hybrid assembly are staggered in the axial direction, and the three elastic plates (61) are staggered in the axial direction.

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