Liquid mixing stirrer

Abstract

The invention discloses a liquid mixing stirrer which comprises a rack, a material mixing barrel, a stirring shaft, a first feeding hopper, a second feeding hopper and a driving device, the material mixing barrel is installed on the rack, the stirring shaft extends into the material mixing barrel, a propeller is installed at the bottom end of the stirring shaft, the bottom of the propeller is attached to the inner bottom face of the material mixing barrel, and the driving device drives the stirring shaft to rotate. The stirring shaft is axially provided with a feeding channel in a penetrating mode, the propeller is provided with a discharging channel which is communicated with the feeding channel and extends to the outer surface of the propeller, the first feeding hopper is installed at the upper end of the stirring shaft, an outlet of the first feeding hopper is communicated with the feeding channel, and the second feeding hopper is eccentrically arranged at the top of the mixing barrel. A plurality of discharge holes are formed in the bottom of the mixing barrel, and the driving device is connected with the stirring shaft. According to the invention, high-viscosity materials can be mixed and stirred, instantaneous uniform mixing of the materials according to a designed ratio is realized by controlling the rotating speed of the propeller and the feeding flow, and the reaction contact surface between the materials is ensured, so that the generation of byproducts is reduced or eliminated, and the purity of generated substances is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of stirring devices, in particular to a liquid mixing and stirring machine. Background Art

[0002] Stirring operation is widely used in process industries such as chemical, petrochemical, pharmaceutical, food, metallurgy, papermaking and sewage treatment, and plays an important role in homogenization, emulsification, fermentation and polymerization. According to statistics, in the three major chemical synthetic industries alone, stirring equipment accounts for more than 90% of the total reactors, and accounts for about 5% to 25% of the total process equipment in the whole plant. At present, the design of stirring equipment at home and abroad is still in the semi-empirical stage, and the main difficulty lies in the design and selection of the stirrer. As the core functional component of the stirring equipment, the stirrer directly determines the mixing effect and energy consumption of the system, and thus affects the production cost. Therefore, it is of great practical significance to research and develop new stirrers and select them reasonably.

[0003] Existing mixers use a rotating agitator to mix, stir, and homogenize materials to achieve mixing and reaction between different materials. The degree of mixing uniformity is one of the indicators to test the rationality of the mixer design. At present, the feeding method of the mixer is external feeding, and then stirring and mixing. In fact, the stirring process is often accompanied by reaction, mixing, and fusion processes. During the feeding process, some liquids will react first, which will result in the product not being the desired product, because when the substance undergoes a chemical reaction, the amount of the reactants is different, and the product may be different. In addition, the external feeding method will also lead to low mixing efficiency and the problem of not being able to mix completely evenly. Most mixers pour the materials from the feed port for stirring, which causes the materials to mix and react chemically, producing different products. For example, when different amounts of hydrogen ions meet an indicator at room temperature, more hydrogen ions will be acidic and less will be alkaline. Therefore, it is necessary to improve the existing mixer. Summary of the invention

[0004] The object of the present invention is to provide a liquid mixer, which can mix and stir high-viscosity materials. By controlling the rotation speed of the propeller and the feed flow rate, the materials can be instantly and evenly mixed according to the designed ratio, the reaction contact surface between the materials can be guaranteed, and the generation of by-products can be reduced or eliminated, thereby ensuring the purity of the generated substances.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a liquid mixing mixer, comprising a frame, a mixing barrel, a stirring shaft, a first feed hopper, a second feed hopper and a driving device, the mixing barrel being installed on the frame, the bottom of the mixing barrel being in a conical shape with a larger top and a smaller bottom, the stirring shaft extending into the mixing barrel from the center position of the top of the mixing barrel, and a propeller being installed at the bottom end of the stirring shaft, the bottom of the propeller being in contact with the inner bottom surface of the mixing barrel, the stirring shaft being axially provided with a feeding channel, the propeller being provided with a discharge channel connected with the feeding channel and extending to the outer surface of the propeller, the first feed hopper being installed at the upper end of the stirring shaft, and the outlet of the first feed hopper being connected with the feed channel, the second feed hopper being eccentrically arranged at the top of the mixing barrel, the bottom of the mixing barrel being provided with a plurality of discharge ports, the driving device being connected to the stirring shaft for driving the stirring shaft to rotate, thereby driving the propeller to rotate.

[0006] By adopting the above technical scheme, the first material is added to the first feed hopper, and the second material is added to the second feed hopper. The driving device drives the stirring shaft to rotate, and then drives the propeller to rotate. The centrifugal force generated by the rotating propeller throws the first material out to mix with the second material, so that the components can be contacted and mixed inside the materials. In the mixing process of the two materials, the shear force of the propeller drives the material particles to move relative to each other, so that the mixing effect is better and the generation of by-products can be significantly reduced. The bottom of the propeller fits with the bottom surface of the mixing barrel, which can prevent high-viscosity materials from sticking to the inner wall of the mixing barrel, thereby avoiding uneven mixing and increased energy loss.

[0007] The present invention is further configured as follows: the propeller includes a bottom shaft, a sleeve arranged on the top of the bottom shaft, and a plurality of blades arranged on the outer periphery of the bottom shaft, a limiting step is formed between the bottom shaft and the sleeve, the bottom end of the stirring shaft is inserted into the sleeve, and the bottom end of the bottom shaft is tightly abutted against the limiting step, a linkage groove is provided at the upper end of the sleeve, a linkage protrusion matching the linkage groove is provided on the stirring shaft, a discharge cavity connected to the feed channel is provided at the upper end of the bottom shaft, a centrifugal flow channel is provided in the blade along the radial extension of the bottom shaft, a plurality of discharge holes connected to the centrifugal flow channel are provided on the outer surface of the blade, the discharge holes are evenly arranged along the extension direction of the centrifugal flow channel, and the discharge cavity, the centrifugal flow channel and the discharge holes form the discharge channel.

[0008] By adopting the above technical solution, the linkage connection between the propeller and the stirring shaft can be realized. At the same time, the design of the discharge channel makes it easy to throw out the material through the centrifugal force during the rotation process.

[0009] The present invention is further configured such that the paddle is arranged obliquely to the inner bottom surface of the mixing barrel, and the angle between the paddle and the inner bottom surface of the mixing barrel is 35° to 55°.

[0010] By adopting the above technical solution, the blade angle has a great influence on the shear stage during the mixing process. When the blade installation angle gradually increases from 35° to 45°, the shearing effect of the blade on the material particles during the mixing process gradually increases, and the generated shear force drives the material particles to move relative to each other. The better the mixing degree, the smaller the dispersion coefficient of the mixture; when the installation angle increases from 45° to 55°, the shearing force of the blade on the particles decreases, the material particles cannot move effectively in the mixing barrel, and cannot mix with other particles. The mixing degree is not good, and the dispersion coefficient of the mixture is large. Since the dispersion coefficient reflects the degree of stirring and mixing, the smaller its value, the better the mixing effect. Therefore, when the blade installation angle is 45°, the stirring effect is best.

[0011] The present invention is further configured such that the discharge hole is arranged on one side of the paddle close to the bottom of the mixing barrel, and the discharge hole is arranged on the paddle close to the central axis of the mixing barrel, and the second feed hopper is arranged at the top of the mixing barrel close to the outer edge.

[0012] By adopting the above technical solution, this positional relationship is more conducive to the full contact and mixing of the two materials.

[0013] The present invention is further configured such that the bottom of the bottom shaft is dome-shaped, a positioning protrusion that protrudes upward and is hollow is provided at the center of the bottom of the mixing barrel, a positioning hole that matches the bottom shaft is provided at the top of the positioning protrusion, and the inner diameter of the positioning hole is not greater than the diameter of the bottom shaft.

[0014] By adopting the above technical solution, the bottom shaft can be positioned to ensure the stability of the propeller during rotation.

[0015] The present invention is further configured as follows: the driving device includes a driving motor, a driving multi-V belt pulley, a driven multi-V belt pulley and a multi-V belt, the driving motor is installed on the side of the frame, the driving multi-V belt pulley is installed on the motor shaft of the driving motor in a linkage manner, the driven multi-V belt pulley is installed on the stirring shaft in a linkage manner, and the multi-V belt is meshingly connected to the driving multi-V belt pulley and the driven multi-V belt pulley.

[0016] By adopting the above technical solution, the driving motor drives the stirring shaft to rotate through the belt transmission. The ordinary belt transmission transmits motion and power by the friction generated by the pressing force when working, but the flat belt only relies on friction to realize transmission. In the case of large working tension, slippage will occur (when the belt drive is overloaded, the effective tension that the belt needs to transmit exceeds the sum of the limiting friction between the belt and the pulley, and significant relative sliding will occur between the belt and the pulley). Therefore, the meshing belt drive is selected, and the transmission is carried out by embedding the poly-V belt in the wedge-shaped groove of the poly-V belt pulley. It has the characteristics of large friction, compact structure, uniform force, etc., and most importantly, it can carry out high-power transmission.

[0017] The present invention is further configured such that a second cylindrical discharge pipe is provided at the bottom of the second feed hopper, a mounting hole is provided at the top of the mixing barrel, and the second cylindrical discharge pipe is plugged into the mounting hole.

[0018] By adopting the above technical solution, the installation structure of the second cylindrical feeding pipe is simple and reliable, and the disassembly and assembly is very convenient.

[0019] The present invention is further configured such that a first cylindrical feeding tube is provided at the bottom of the first feeding hopper, a conical guide surface is provided at the bottom end of the first cylindrical feeding tube, the first cylindrical feeding tube is plugged into the top end of the feeding channel, a locking assembly for locking the first cylindrical feeding tube is installed on the stirring shaft, the locking assembly includes a locking seat, a locking bullet and a first spring, a first thread groove is provided on the side of the first cylindrical feeding tube, a guide hole connected to the inner wall of the stirring shaft is provided at the inner end of the first thread groove, the locking seat is threadedly connected to the first thread The cam is provided with a first internal hexagonal groove, and the outer end of the locking seat is provided with a sliding cavity, and a limiting ring is installed on the outer end of the sliding cavity. The locking bullet is inserted into the limiting ring, and the inner end of the locking bullet is provided with a limiting flange for axially limiting with the limiting ring. The two ends of the first spring are respectively pressed against the locking bullet and the inner end of the sliding cavity. The outer wall of the first cylindrical feeding tube is provided with an arc-shaped locking groove extending along the circumferential direction, and guiding inclined surfaces connecting the inner end of the arc-shaped locking groove and the outer wall of the first cylindrical feeding tube are provided on both sides of the arc-shaped locking groove.

[0020] By adopting the above technical solution, when installing the first feed hopper, it is only necessary to insert the first cylindrical discharge tube at the bottom of the first feed hopper into the stirring shaft. The locking bullet on the locking assembly is pressed into the arc-shaped locking groove of the first cylindrical discharge tube under the action of the first spring, so that the first feed hopper can be locked to prevent the first feed hopper from falling out due to accidental touching by the staff. When disassembling, it is only necessary to rotate the first feed hopper to disengage the locking bullet from the arc-shaped locking groove, and the first feed hopper can be pulled out. The disassembly and assembly operations are very convenient.

[0021] The present invention is further configured as follows: a discharge pipe is installed on the discharge port, a slow-discharging device is installed in the discharge pipe, the upper end of the slow-discharging device is lower than the upper end of the discharge pipe, so that the discharge pipe forms a recessed portion corresponding to the position above the slow-discharging device, the slow-discharging device comprises an upper mounting seat, a lower mounting seat, a plurality of connecting rods, a ball, a support ring and a second spring, the upper mounting seat and the lower mounting seat are both threadedly connected to the discharge pipe, and a second inner hexagonal groove is provided at the lower end of the lower mounting seat, a plurality of second threaded grooves are provided at the bottom of the upper mounting seat, a plurality of through holes are penetrated on the lower mounting seat, the upper end of the connecting rod is threadedly connected to the corresponding second threaded groove, the lower end of the connecting rod passes through the corresponding through hole, and the connecting rod corresponds to the The two ends of the through hole are respectively clamped with a retaining spring, and the two retaining springs are respectively pressed against the upper and lower ends of the lower mounting seat, and multiple connecting rods are distributed in a circular array. The bottom end of the connecting rod is also provided with a third hexagonal groove, and an upper through hole is provided through the middle of the upper mounting seat, and a lower through hole is provided through the middle of the lower mounting seat. The ball, support ring and second spring are sequentially arranged between the upper mounting seat and the lower mounting seat from top to bottom, and the outer periphery of the support ring is tangent to the multiple connecting rods. One end of the second spring is pressed against the lower mounting seat, and the other end of the second spring is pressed against the support ring, so that the support ring presses the ball against the lower end of the upper through hole of the upper mounting seat, and an eccentric baffle is provided on the inner wall of the upper through hole at a position corresponding to the top of the ball.

[0022] By adopting the above technical solution and setting a buffer device, when there is a certain amount of mixed material at the bottom of the mixing barrel, the buffer device is opened due to the gravity of the material to discharge the material, that is, the ball is subjected to the gravity of the material to overcome the spring force of the second spring and move downward, so that the upper through hole of the upper mounting seat is connected, and the eccentric baffle plate arranged on the upper through hole makes the flow channel of the upper through hole eccentric to the ball. When the material flows down, the flow on one side of the ball is larger, so that the ball rolls on the support ring, which has a pushing effect on the material discharge, making the material discharge smoother.

[0023] The present invention is further configured as follows: the slow-out device also includes an adjusting rod, the upper mounting seat is also provided with an upper threaded groove, the lower mounting seat is provided with a lower operating hole, the adjusting rod passes through the lower operating hole, and the upper end of the adjusting rod is threadedly connected to the upper threaded groove, the lower end of the adjusting rod is provided with a fourth inner hexagonal groove, the outer periphery of the adjusting rod is provided with an adjusting flange, the adjusting flange is arranged above the support ring, a pressure cover is threadedly connected to the adjusting flange, a plurality of balls are rollingly arranged between the pressure cover and the adjusting flange, an annular rolling groove matching the ball is provided at the lower end of the adjusting flange, and a plurality of limiting holes for allowing the ball part to extend out are opened on the pressure cover.

[0024] By adopting the above technical solution, after the materials are mixed, a small amount of material will be retained at the bottom of the mixing barrel due to the buffer device. At this time, the adjusting rod is rotated to make it move downward until the ball on the adjusting rod presses down the support ring, so that the ball is separated from the bottom of the upper mounting seat, thereby making the upper through hole on the upper mounting seat conductive and the mixed material is completely discharged.

[0025] In summary, the present invention can mix and stir high-viscosity materials, and through the control of the propeller rotation speed and the feed flow rate, the materials can be instantly and evenly mixed according to the designed ratio, thereby ensuring the reaction contact surface between the materials, thereby reducing or eliminating the generation of by-products and ensuring the purity of the generated substances. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional diagram of the overall structure of Example 1; Figure 2 It is a cross-sectional view of the overall structure of Example 1; Figure 3 is a stereoscopic diagram of the propeller of Example 1; Figure 4 is a cross-sectional view of the propeller of Example 1; Figure 5 It is a cross-sectional view of the overall structure of Example 2; Figure 6 for Figure 5 The enlarged structural diagram of the middle A part; Figure 7 This is a schematic diagram of the structure of the first feed hopper in Example 2; Figure 8 for Figure 5 A schematic diagram of the enlarged structure of the middle B part; Fig. 9 This is a schematic diagram of the installation structure of the ball in Example 2.

[0027] In the figure: 1, frame; 2, mixing barrel; 3, stirring shaft; 4, first feed hopper; 5, second feed hopper; 6, driving device; 7, propeller; 8, feed channel; 9, discharge channel; 10, discharge port; 11, bottom shaft; 12, bushing; 13, paddle; 14, limit step; 15, linkage groove; 16, linkage protrusion; 17, discharge cavity; 18, centrifugal flow channel; 19, discharge hole; 20, positioning protrusion; 21, positioning hole; 22, driving motor; 23, active multi-V belt pulley; 24, driven multi-V belt pulley; 25, multi-V belt; 26, second cylindrical discharge pipe; 27, mounting hole; 28, first cylindrical discharge pipe; 29, tapered guide surface; 30, locking assembly; 31, locking seat; 32, locking bullet; 33, first spring; 34, The first thread groove; 35, guide hole; 36, first hexagonal inner groove; 37, sliding cavity; 38, limit ring; 39, limit flange; 40, arc locking groove; 41, guide slope; 42, discharge pipe; 43, slow-discharge device; 44, lower recess; 45, upper mounting seat; 46, lower mounting seat; 47, connecting rod; 48, ball; 49, support ring; 50, second spring; 51, second hexagonal inner groove; 52, second thread groove; 53, through hole; 54, retaining ring; 55, third hexagonal inner groove; 56, upper through hole; 57, lower through hole; 58, eccentric baffle; 59, adjusting rod; 60, upper thread groove; 61, lower operating hole; 62, fourth hexagonal inner groove; 63, adjusting flange; 64, pressure cover; 65, ball; 66, annular rolling groove; 67, limit hole. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Embodiment 1: The present invention provides as attached Figures 1 to 4The liquid mixing and blending machine shown in the figure comprises a frame 1, a mixing barrel 2, a stirring shaft 3, a first feed hopper 4, a second feed hopper 5 and a driving device 6. The mixing barrel 2 is mounted on the frame 1. The bottom of the mixing barrel 2 is in a conical shape with a large top and a small bottom. The upper end of the mixing barrel 2 is a detachable upper cover. The stirring shaft 3 extends into the mixing barrel 2 from the center of the top of the mixing barrel 2. A propeller 7 is mounted on the bottom end of the stirring shaft 3. The bottom of the propeller 7 is in contact with the inner bottom surface of the mixing barrel 2. The stirring shaft 3 is axially A feed channel 8 is provided through it, and a discharge channel 9 is provided on the propeller 7 and is connected with the feed channel 8 and extends to the outer surface of the propeller 7. The first feed hopper 4 is installed at the upper end of the stirring shaft 3, and the outlet of the first feed hopper 4 is connected with the feed channel 8. The second feed hopper 5 is eccentrically arranged on the top of the mixing barrel 2, and a plurality of discharge ports 10 are provided at the bottom of the mixing barrel 2. The driving device 6 is connected to the stirring shaft 3 to drive the stirring shaft 3 to rotate, thereby driving the propeller 7 to rotate. A first material is added to the first feed hopper 4, and a second material is added to the second feed hopper 5. The driving device 6 drives the stirring shaft 3 to rotate, and then drives the propeller 7 to rotate. The centrifugal force generated by the rotating propeller 7 throws the first material out to mix with the second material, so that the components can be contacted and mixed inside the materials. During the mixing process of the two materials, the shear force of the propeller 7 drives the material particles to move relative to each other, so that the mixing effect is better and the generation of by-products can be significantly reduced. The bottom of the propeller 7 fits with the inner bottom surface of the mixing barrel 2, which can prevent high-viscosity materials from sticking to the inner wall of the mixing barrel 2, thereby avoiding uneven mixing and increased energy loss.

[0030] As attached Figures 2 to 4 As shown, the propeller 7 includes a bottom shaft 11, a sleeve 12 arranged on the top of the bottom shaft 11, and a plurality of blades 13 arranged on the outer periphery of the bottom shaft 11, a limiting step 14 is formed between the bottom shaft 11 and the sleeve 12, the bottom end of the stirring shaft 3 is inserted into the sleeve 12, and the bottom end of the bottom shaft 11 is tightly abutted against the limiting step 14, the upper end of the sleeve 12 is provided with a linkage groove 15, and the stirring shaft 3 is provided with a linkage protrusion 16 that fits with the linkage groove 15, the upper end of the bottom shaft 11 is provided with a discharge cavity 17 connected to the feed channel 8, a centrifugal flow channel 18 is provided in the blade 13 along the radial direction of the bottom shaft 11, and a plurality of discharge holes 19 connected to the centrifugal flow channel 18 are provided on the outer surface of the blade 13, and the discharge holes 19 are evenly arranged along the extension direction of the centrifugal flow channel 18, and the discharge cavity 17, the centrifugal flow channel 18 and the discharge holes 19 form the discharge channel 9. This design can realize the linkage connection between the propeller 7 and the stirring shaft 3. At the same time, the design of the discharge channel 9 makes it easy to throw out the material through the centrifugal force during the rotation process.

[0031] The blade 13 is arranged to be inclined to the inner bottom surface of the mixing barrel 2, and the angle between the blade 13 and the inner bottom surface of the mixing barrel 2 is 35° to 55°. The angle of the blade 13 has a great influence on the shear stage during the mixing process. When the installation angle of the blade 13 gradually increases from 35° to 45°, the shearing effect of the blade on the material particles during the mixing process gradually increases, and the generated shear force drives the material particles to move relative to each other. The better the mixing degree, the smaller the discrete coefficient of the mixture; when the installation angle increases from 45° to 55°, the shearing force of the blade 13 on the particles decreases, the material particles cannot effectively move in the mixing barrel 2, and cannot mix with other particles, the mixing degree is not good, and the discrete coefficient of the mixture is large. Since the discrete coefficient reflects the degree of stirring and mixing, the smaller its value, the better the mixing effect, so when the blade installation angle is 45°, the stirring effect is best.

[0032] Among them, the speed of the blade 13 has an important influence on the vortex depth of the liquid surface and the distribution of the solid phase volume fraction. The higher the speed, the better the mixing effect and the shorter the mixing time. However, if the speed is too high, it may cause the vortex depth to be too large, resulting in problems such as liquid overflow, entrained gas and excessive torque. It is most appropriate to select a speed range of 20 to 40 r / min for the stirring shaft 3.

[0033] The discharge hole 19 is arranged on one side of the paddle 13 close to the bottom of the mixing barrel 2, and the discharge hole 19 is arranged on the paddle 13 close to the central axis of the mixing barrel 2, and the second feed hopper 5 is arranged at the top of the mixing barrel 2 close to the outer edge. This positional relationship is more conducive to the full contact and mixing of the two materials.

[0034] As attached Figure 2 As shown, the bottom of the bottom shaft 11 is in a dome shape, and a positioning protrusion 20 that protrudes upward and is hollow is provided at the center of the bottom of the mixing barrel 2. A positioning hole 21 that matches the bottom shaft 11 is provided on the top of the positioning protrusion 20, and the inner diameter of the positioning hole 21 is not greater than the diameter of the bottom shaft 11. This design can position the bottom shaft 11 and ensure the stability of the propeller 7 during rotation.

[0035] As attached Figure 2As shown, the driving device 6 includes a driving motor 22, an active poly-V belt 25 wheel 23, a driven poly-V belt 25 wheel 24 and a poly-V belt 25, wherein the driving motor 22 is mounted on the side of the frame 1, the active poly-V belt 25 wheel 23 is mounted on the motor shaft of the driving motor 22 in a linkage manner, the driven poly-V belt 25 wheel 24 is mounted on the stirring shaft 3 in a linkage manner, and the poly-V belt 25 is meshedly connected to the active poly-V belt 25 wheel 23 and the driven poly-V belt 25 wheel 24. The driving motor 22 drives the stirring shaft 3 to rotate by means of belt transmission. When ordinary belt transmission is working, the friction force generated by the pressing force is used to transmit motion and power, but the flat belt only relies on friction to achieve transmission. In situations with large working tension, slippage will occur (when the belt transmission is overloaded, the effective tension that the belt needs to transmit exceeds the sum of the limiting friction forces between the belt and the pulley, and significant relative sliding will occur between the belt and the pulley). Therefore, a meshing belt drive is selected, and the transmission is carried out by embedding the poly-V belt 25 into the wedge-shaped groove of the poly-V belt 25 wheel. It has the characteristics of large friction, compact structure, uniform force, etc., and most importantly, it can carry out high-power transmission.

[0036] As attached Figure 2 As shown, a second cylindrical feeding pipe 26 is provided at the bottom of the second feeding hopper 5, and a mounting hole 27 is provided at the top of the mixing barrel 2, and the second cylindrical feeding pipe 26 is plugged into the mounting hole 27. The second cylindrical feeding pipe 26 has a simple and reliable mounting structure, and is very convenient to disassemble and assemble.

[0037] Embodiment 2 is different from Embodiment 1, as shown in the attached Figures 5 to 7As shown, in this embodiment, a first cylindrical feeding tube 28 is provided at the bottom of the first feeding hopper 4, and a conical guide surface 29 is provided at the bottom end of the first cylindrical feeding tube 28. The first cylindrical feeding tube 28 is plugged into the top end of the feeding channel 8. A locking assembly 30 for locking the first cylindrical feeding tube 28 is installed on the stirring shaft 3. The locking assembly 30 includes a locking seat 31, a locking bullet 32 ​​and a first spring 33. A first thread groove 34 is provided on the side of the first cylindrical feeding tube 28. A guide hole 35 connected to the inner wall of the stirring shaft 3 is provided at the inner end of the first thread groove 34. The locking seat 31 is threadedly connected to the first thread groove 34. , and the outer end of the locking seat 31 is provided with a first hexagonal groove 36, the inner end of the locking seat 31 is provided with a sliding cavity 37, the outer end of the sliding cavity 37 is installed with a limiting ring 38, the locking bullet 32 ​​is inserted into the limiting ring 38, the inner end of the locking bullet 32 ​​is provided with a limiting flange 39 for axially limiting with the limiting ring 38, the two ends of the first spring 33 are respectively pressed against the locking bullet 32 ​​and the inner end of the sliding cavity 37, the outer wall of the first cylindrical feeding tube 28 is provided with an arc-shaped locking groove 40 extending along the circumferential direction, and the two sides of the arc-shaped locking groove 40 are provided with guiding inclined surfaces 41 connecting the inner end of the arc-shaped locking groove 40 and the outer wall of the first cylindrical feeding tube 28. When installing the first feed hopper 4, it is only necessary to insert the first cylindrical discharge tube 28 at the bottom of the first feed hopper 4 into the stirring shaft 3. The locking bullet 32 ​​on the locking assembly 30 is pressed into the arc-shaped locking groove 40 of the first cylindrical discharge tube 28 under the action of the first spring 33, so as to lock the first feed hopper 4 and prevent the first feed hopper 4 from falling out due to accidental touching by the staff. When disassembling, it is only necessary to rotate the first feed hopper 4 to disengage the locking bullet 32 ​​from the arc-shaped locking groove 40, and then the first feed hopper 4 can be pulled out. The disassembly and assembly operation is very convenient.

[0038] As attached Figure 5 , 8As shown in Figures 9 and 10, a discharge pipe 42 is installed on the discharge port 10, and a slow-discharging device 43 is installed in the discharge pipe 42. The upper end of the slow-discharging device 43 is lower than the upper end of the discharge pipe 42, so that the discharge pipe 42 forms a lower recess 44 at the position above the slow-discharging device 43. The slow-discharging device 43 includes an upper mounting seat 45, a lower mounting seat 46, a plurality of connecting rods 47, a ball 48, a support ring 49 and a second spring 50. The upper mounting seat 45 and the lower mounting seat 46 are both threadedly connected to the discharge pipe 42. A threaded sealing ring can be provided between the upper mounting seat 45 and the inner wall of the discharge pipe 42 to ensure the sealing between the two. A second hexagonal groove 51 is provided at the lower end of the lower mounting seat 46, and a plurality of second thread grooves 52 are provided at the bottom of the upper mounting seat 45. A plurality of through holes 53 are provided on the lower mounting seat 46. The upper end of the connecting rod 47 is threadedly connected to the corresponding second thread groove 52, and the lower end of the connecting rod 47 passes through the corresponding The connecting rod 47 has a through hole 53 corresponding to the through hole 53, and a clamping spring 54 is respectively clamped at both ends of the connecting rod 47 corresponding to the through hole 53. The two clamping springs 54 are respectively pressed against the upper and lower ends of the lower mounting seat 46, and the multiple connecting rods 47 are distributed in a circular array. The bottom end of the connecting rod 47 is also provided with a third hexagonal groove 55. The middle part of the upper mounting seat 45 is penetrated by an upper through hole 56, and the middle part of the lower mounting seat 46 is penetrated by a lower through hole 57. The ball 48, the support ring 49 and the first The two springs 50 are arranged in sequence between the upper mounting seat 45 and the lower mounting seat 46 from top to bottom. The outer periphery of the support ring 49 is arranged tangent to the multiple connecting rods 47. One end of the second spring 50 is pressed against the lower mounting seat 46, and the other end of the second spring 50 is pressed against the support ring 49, so that the support ring 49 presses the ball 48 against the lower end of the upper through hole 56 of the upper mounting seat 45. An eccentric baffle 58 is provided on the inner wall of the upper through hole 56 at a position corresponding to the top of the ball 48. By providing a buffer device, when there is a certain amount of mixed material at the bottom of the mixing barrel, the buffer device will open due to the gravity of the material to discharge the material, that is, the ball 48 is subjected to the gravity of the material to overcome the spring force of the second spring 50 and move downward, so that the upper through hole 56 of the upper mounting seat 45 is connected, and the eccentric baffle plate 58 provided on the upper through hole 56 makes the flow channel of the upper through hole 56 eccentric to the ball 48. When the material flows down, the flow on one side of the ball 48 is larger, so that the ball 48 will roll on the support ring 49, which has a pushing effect on the material discharge, making the material discharge smoother.

[0039] As attached Figure 8 and attached Fig. 9As shown, the slow-out device 43 includes an adjusting rod 59, the upper mounting seat 45 is also provided with an upper threaded groove 60, the lower mounting seat 46 is provided with a lower operating hole 61, the adjusting rod 59 passes through the lower operating hole 61, and the upper end of the adjusting rod 59 is threadedly connected to the upper threaded groove 60, the lower end of the adjusting rod 59 is provided with a fourth inner hexagonal groove 62, the outer periphery of the adjusting rod 59 is provided with an adjusting flange 63, the adjusting flange 63 is arranged above the support ring 49, a pressure cover 64 is threadedly connected to the adjusting flange 63, a plurality of balls 65 are rollingly arranged between the pressure cover 64 and the adjusting flange 63, the lower end of the adjusting flange 63 is provided with an annular rolling groove 66 matching the ball 48, and a plurality of limiting holes 67 for partially extending the ball 48 are opened on the pressure cover 64. After the materials are mixed, a small amount of materials will be retained at the bottom of the mixing barrel 2 due to the buffer device. At this time, the adjusting rod 59 is rotated to make it move downward until the ball 65 on the adjusting rod 59 presses down the support ring 49, so that the ball 48 is separated from the bottom of the upper mounting seat 45, so that the upper through hole 56 on the upper mounting seat 45 is connected, and the mixed material is completely discharged.

Claims

1. Liquid mixing and stirring machine, characterized in that: The invention comprises a frame (1), a mixing barrel (2), a stirring shaft (3), a first feeding hopper (4), a second feeding hopper (5) and a driving device (6); the mixing barrel (2) is mounted on the frame (1); the bottom of the mixing barrel (2) is in a conical shape with a larger top and a smaller bottom; the stirring shaft (3) extends into the mixing barrel (2) from the center of the top of the mixing barrel (2); a propeller (7) is mounted at the bottom end of the stirring shaft (3); the bottom of the propeller (7) is in contact with the inner bottom surface of the mixing barrel (2); and a feeding channel (8) is provided along the axial direction of the stirring shaft (3). The propeller (7) is provided with a discharge channel (9) which is connected to the feed channel (8) and extends to the outer surface of the propeller (7); the first feed hopper (4) is installed at the upper end of the stirring shaft (3), and the outlet of the first feed hopper (4) is connected to the feed channel (8); the second feed hopper (5) is eccentrically arranged on the top of the mixing barrel (2); the bottom of the mixing barrel (2) is provided with a plurality of discharge ports (10); the driving device (6) is connected to the stirring shaft (3) to drive the stirring shaft (3) to rotate, thereby driving the propeller (7) to rotate.

2. The liquid mixing and stirring machine according to claim 1, characterized in that: The propeller (7) comprises a bottom shaft (11), a sleeve (12) arranged at the top of the bottom shaft (11), and a plurality of blades (13) arranged on the outer periphery of the bottom shaft (11); a limiting step (14) is formed between the bottom shaft (11) and the sleeve (12); the bottom end of the stirring shaft (3) is inserted into the sleeve (12), and the bottom end of the bottom shaft (11) is tightly abutted against the limiting step (14); the upper end of the sleeve (12) is provided with a linkage groove (15), and the stirring shaft (3) is provided with a locking member that fits with the linkage groove (15). The bottom shaft (11) is provided with a linkage protrusion (16) connected to the feeding channel (8), the upper end of the bottom shaft (11) is provided with a discharge cavity (17) connected to the feeding channel (8), a centrifugal flow channel (18) is provided in the paddle (13) along the radial direction of the bottom shaft (11), and a plurality of discharge holes (19) connected to the centrifugal flow channel (18) are provided on the outer surface of the paddle (13), the discharge holes (19) are evenly arranged along the extension direction of the centrifugal flow channel (18), and the discharge cavity (17), the centrifugal flow channel (18) and the discharge holes (19) form the discharge channel (9).

3. The liquid mixing and stirring machine according to claim 2, characterized in that: The paddle (13) is arranged obliquely to the inner bottom surface of the mixing barrel (2), and the angle between the paddle (13) and the inner bottom surface of the mixing barrel (2) is 35° to 55°.

4. The liquid mixing and stirring machine according to claim 3, characterized in that: The discharge hole (19) is arranged on one side of the paddle (13) close to the bottom of the mixing barrel (2), and the discharge hole (19) is arranged on the paddle (13) close to the central axis of the mixing barrel (2), and the second feed hopper (5) is arranged on the top of the mixing barrel (2) close to the outer edge.

5. The liquid mixing and stirring machine according to claim 2, characterized in that: The bottom of the bottom shaft (11) is in a dome shape, and a positioning protrusion (20) that protrudes upward and is hollow is provided at the center of the bottom of the mixing barrel (2). A positioning hole (21) that matches the bottom shaft (11) is provided at the top of the positioning protrusion (20), and the inner diameter of the positioning hole (21) is not greater than the diameter of the bottom shaft (11).

6. The liquid mixing and stirring machine according to claim 1, characterized in that: The driving device (6) comprises a driving motor (22), a driving poly-V belt pulley (23), a driven poly-V belt (24) wheel and a poly-V belt (25); the driving motor (22) is mounted on the side of the frame (1); the driving poly-V belt pulley (23) is mounted on the motor shaft of the driving motor (22); the driven poly-V belt (24) wheel is mounted on the stirring shaft (3); and the poly-V belt (25) is meshedly connected to the driving poly-V belt pulley (23) and the driven poly-V belt (24) wheel.

7. The liquid mixing and stirring machine according to claim 1, characterized in that: A second cylindrical discharge pipe (26) is provided at the bottom of the second feed hopper (5), a mounting hole (27) is provided at the top of the mixing barrel (2), and the second cylindrical discharge pipe (26) is plugged into the mounting hole (27).

8. The liquid mixing and stirring machine according to claim 1, characterized in that: A first cylindrical discharge pipe (28) is provided at the bottom of the first feed hopper (4), and a conical guide surface (29) is provided at the bottom end of the first cylindrical discharge pipe (28). The first cylindrical discharge pipe (28) is plugged into the top end of the feed channel (8). A locking assembly (30) for locking the first cylindrical discharge pipe (28) is installed on the stirring shaft (3). The locking assembly (30) includes a locking seat (31), a locking bullet (32) and a first spring (33). A first thread groove (34) is provided on the side of the first cylindrical discharge pipe (28), and a guide hole (35) connected to the inner wall of the stirring shaft (3) is provided at the inner end of the first thread groove (34). The locking seat (31) is threadedly connected to the first thread groove (34), and the The outer end of the locking seat (31) is provided with a first hexagonal groove (36), the inner end of the locking seat (31) is provided with a sliding cavity (37), the outer end of the sliding cavity (37) is installed with a limiting ring (38), the locking bullet (32) is inserted into the limiting ring (38), the inner end of the locking bullet (32) is provided with a limiting flange (39) for forming an axial limit with the limiting ring (38), the two ends of the first spring (33) are respectively pressed against the locking bullet (32) and the inner end of the sliding cavity (37), the outer wall of the first cylindrical feeding tube (28) is provided with an arc-shaped locking groove (40) extending along the circumferential direction, and the two sides of the arc-shaped locking groove (40) are provided with guiding inclined surfaces (41) connecting the inner end of the arc-shaped locking groove (40) and the outer wall of the first cylindrical feeding tube (28).

9. The liquid mixing and stirring machine according to claim 1, characterized in that: The discharge port (10) is provided with a discharge pipe (42), and a slow-discharging device (43) is installed in the discharge pipe (42). The upper end of the slow-discharging device (43) is lower than the upper end of the discharge pipe (42), so that the discharge pipe (42) forms a concave portion (44) at a position above the slow-discharging device (43). The slow-discharging device (43) comprises an upper mounting seat (45), a lower mounting seat (46), a plurality of connecting rods (47), a ball (48), a support ring (49) and a second spring (50). The upper mounting seat ( The upper mounting seat (45) and the lower mounting seat (46) are both threadedly connected to the discharge pipe (42), and the lower end of the lower mounting seat (46) is provided with a second hexagonal groove (51), the bottom of the upper mounting seat (45) is provided with a plurality of second thread grooves (52), and the lower mounting seat (46) is provided with a plurality of through holes (53), the upper end of the connecting rod (47) is threadedly connected to the corresponding second thread groove (52), the lower end of the connecting rod (47) passes through the corresponding through hole (53), and the connecting rod (47) corresponds to the through hole The two ends of the upper and lower mounting seats (53) are respectively clamped with a retaining spring (54), and the two retaining springs (54) are respectively pressed against the upper and lower ends of the lower mounting seat (46), and a plurality of connecting rods (47) are distributed in a circular array, and the bottom end of the connecting rod (47) is also provided with a third inner hexagonal groove (55), and the middle part of the upper mounting seat (45) is provided with an upper through hole (56), and the middle part of the lower mounting seat (46) is provided with a lower through hole (57), and the ball (48), the support ring (49) and the second spring (50) are arranged in order from top to bottom. It is arranged between the upper mounting seat (45) and the lower mounting seat (46), the outer periphery of the support ring (49) is arranged tangent to the plurality of connecting rods (47), one end of the second spring (50) is pressed against the lower mounting seat (46), and the other end of the second spring (50) is pressed against the support ring (49), so that the support ring (49) presses the ball (48) against the lower end of the upper through hole (56) of the upper mounting seat (45), and an eccentric baffle plate (58) is provided on the inner wall of the upper through hole (56) at a position above the ball (48).

10. The liquid mixing and stirring machine according to claim 9, characterized in that: The slow-out device (43) comprises an adjusting rod (59), an upper thread groove (60) is further provided on the upper mounting seat (45), a lower operating hole (61) is provided on the lower mounting seat (46), the adjusting rod (59) passes through the lower operating hole (61), and the upper end of the adjusting rod (59) is threadedly connected in the upper thread groove (60), the lower end of the adjusting rod (59) is provided with a fourth inner hexagonal groove (62), and the outer periphery of the adjusting rod (59) is provided with an adjusting The flange (63) is provided above the support ring (49), the adjusting flange (63) is threadedly connected with a pressure cover (64), a plurality of balls (65) are rollingly arranged between the pressure cover (64) and the adjusting flange (63), an annular rolling groove (66) matching with the ball (48) is provided at the lower end of the adjusting flange (63), and a plurality of limiting holes (67) for partially extending the ball (48) are opened on the pressure cover (64).

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