Mixing device for producing artificial quartz stone with effective proportioning

Abstract

The invention discloses an effective-proportioning artificial quartz stone production mixing device which comprises a mounting base, a mixing box is arranged above the mounting base, a rotary driving assembly is arranged on the surface of the mixing box, an auxiliary supporting assembly is arranged at the bottom of the mixing box, and a feeding hopper is fixedly arranged on the rear side of the mounting base. A box cover is fixedly arranged at the top of the mixing box, and raw materials enter the mixing box in sequence and intermittently, so that after entering the mixing box, the different raw materials can have relatively independent spaces to be distributed before being preliminarily mixed, a foundation is laid for subsequent more uniform mixing, and the automatic raw material adding mode can greatly improve the mixing efficiency. The production efficiency is greatly improved, errors and instability possibly caused by manual operation are reduced, the accuracy and consistency of raw material adding during production of each batch of artificial quartz stone are guaranteed, and then the quality stability of artificial quartz stone products is improved.

Description

Technical Field

[0001] This invention relates to the field of artificial quartz stone production technology, and in particular to a mixing device for producing artificial quartz stone with an effective proportion. Background Technology

[0002] Artificial quartz stone is a new type of composite building decoration material made of high-purity quartz sand (usually with a content of over 90%) as the main aggregate, resin (such as unsaturated polyester resin) as the binder, and a small amount of pigments and functional additives (such as antibacterial agents and flame retardants). It is manufactured through processes such as vacuum high-pressure vibration molding and high-temperature curing. The main component is natural quartz crystal, thus retaining the high hardness, wear resistance, and scratch resistance of quartz. The resin, as a binder, gives the material processability, toughness, and a certain degree of impact resistance. It has stable overall performance, is not easy to fade, and is resistant to acids and alkalis. It is widely used for kitchen countertops, bathroom countertops, walls, and floors.

[0003] In the production process of artificial quartz stone, various raw materials for artificial quartz stone need to be added into the mixing chamber, and the raw materials inside the chamber are stirred by a stirring device to complete the mixing. After the raw materials are mixed, they are discharged from the inside of the chamber through a pipe.

[0004] However, quartz stone raw materials include multiple components such as quartz sand, resin, pigments, and curing agents, and the proportions are strictly required. Manual weighing and feeding are extremely inefficient, affecting product quality and color difference, and are also labor-intensive. When feeding manually or with simple machinery, all raw materials are usually poured in at once, or the intervals are not precise. This may lead to stratification of materials with different specific gravities (such as heavy particles settling), or premature local reactions between resin and curing agents. Based on the above problems, this application proposes a mixing device for the production of artificial quartz stone with an efficient proportion. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a mixing device for the production of artificial quartz stone with an effective proportioning method, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A mixing device for producing artificial quartz stone with effective proportioning includes a mounting base, a mixing chamber disposed above the mounting base, a rotary drive assembly disposed on the surface of the mixing chamber, an auxiliary support assembly disposed at the bottom of the mixing chamber, a feed hopper fixedly disposed on the rear side of the mounting base, a chamber cover fixedly disposed on the top of the mixing chamber, a stirring assembly disposed on the surface of the chamber cover, a mounting frame fixedly disposed on the top of the mounting base, and a weighing feeding assembly disposed on the top of the mixing chamber.

[0007] Preferably, the drive assembly includes a mounting housing rotatably disposed on the surface of the mixing chamber, the mounting housing being fixedly mounted on the top of the mounting base, a stepper motor being fixedly disposed on the top of the mounting housing, a mounting shaft being mounted on the output end of the stepper motor via a coupling, a drive gear being fixedly disposed on the surface of the mounting shaft, a connecting gear ring being meshed on the surface of the drive gear, and the connecting gear ring being fixedly mounted on the surface of the mixing chamber.

[0008] Preferably, the radius of the drive gear is smaller than the radius of the connecting gear ring, both the drive gear and the connecting gear ring are located inside the mounting housing, and both the drive gear and the connecting gear ring are made of stainless steel.

[0009] Preferably, the auxiliary support assembly includes a support ring fixedly installed on the top of the mixing tank, a support ball bearing is overlapped inside the support ring, the support ball bearing contacts the top of the mounting base, and a limiting ring is overlapped on the surface of the support ball bearing, the limiting ring being fixedly installed on the top of the support ring.

[0010] Preferably, the support ring has a mounting hole at its bottom, and the limiting ring has a limiting hole through its surface. The inner wall of the mounting hole and the inner wall of the limiting hole are both in contact with the surface of the support ball.

[0011] Preferably, the stirring assembly includes a fixed bracket fixedly installed on the top of the tank cover, a stirring motor fixedly installed on the top of the fixed bracket, a stirring shaft installed on the output end of the stirring motor via a coupling, a spiral stirring plate and a rotating circular plate fixedly installed on the surface of the stirring shaft, a rotating shaft rotatably installed inside the rotating circular plate, a mixing stirring plate fixedly installed on the surface of the rotating shaft, a connecting gear fixedly installed at the top of the rotating shaft, a circular toothed rail meshing on the surface of the connecting gear, a fixed outer shell fixedly installed on the outer surface of the circular toothed rail, and the fixed outer shell fixedly installed at the bottom of the tank cover.

[0012] Preferably, there are four rotating shafts and four connecting gears, and the four rotating shafts and four connecting gears are arranged in a circular array. The connecting gears are all inside the fixed housing, and the rotating circular plate and the fixed housing are rotatably connected. Preferably, the weighing feeding assembly includes a weighing sensor fixedly installed on the top of the mounting frame, a mounting bracket fixedly installed on the top of the weighing sensor, a mounting plate fixedly installed on the top of the mounting bracket, a storage bin fixedly installed inside the mounting plate, a discharge pipe fixedly installed at the bottom of the storage bin, a conveying chamber fixedly installed at the bottom of the discharge pipe, a discharge pipe fixedly installed at the bottom of the conveying chamber, a mounting bracket fixedly installed at the rear of the conveying chamber, a drive motor fixedly installed at the rear of the mounting bracket, and a feeding auger installed at the output end of the drive motor via a coupling, the feeding auger being located inside the conveying chamber.

[0013] Preferably, a discharge pipe is fixedly installed at the bottom of the mixing tank, a control valve is fixedly installed on the surface of the discharge pipe, and a circular hole is provided through the top of the mounting base, the radius of which is larger than the diameter of the discharge pipe.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This mixing device for producing artificial quartz stone with an effective proportion uses a rotary drive component to drive the mixing chamber to rotate, and auxiliary components to support the mixing chamber. This causes the mixing chamber to rotate the feed hopper, which then rotates to the discharge point of the weighing feeding component at different positions. This allows the raw materials to enter the mixing chamber intermittently through the feed hopper. In this way, the raw materials can be automatically added to the mixing chamber, avoiding premature contact between the resin and the curing agent, which could lead to localized reactions. At the same time, because the raw materials enter the mixing chamber sequentially and intermittently, different raw materials have relatively independent space for initial distribution before mixing, laying the foundation for more uniform mixing later. Moreover, this automatic addition of raw materials greatly improves production efficiency, reduces errors and instability that may be caused by manual operation, and ensures the accuracy and consistency of raw material addition in each batch of artificial quartz stone production, thereby improving the quality stability of artificial quartz stone products.

[0015] 2. This mixing device for producing artificial quartz stone with an effective proportion uses a weighing feeding component to automatically convey and weigh the raw materials. After weighing, the raw materials enter the mixing chamber through the feed hopper, allowing different raw materials to be added to the mixing chamber according to the set weight. This ensures the accuracy of the raw material proportions and provides a reliable guarantee for the subsequent mixing process. The weighing feeding component uses a high-precision sensor to monitor the weight of the raw materials in real time and accurately control the conveying amount of each raw material, ensuring that different raw materials are accurately added to the mixing chamber according to the set proportions. This avoids errors that may be caused by manual weighing and further improves the quality of artificial quartz stone products.

[0016] 3. The mixing device for producing artificial quartz stone with this effective proportion uses a stirring component to stir the raw materials entering the mixing chamber. This stirring component uses a planetary stirring method to stir and mix the raw materials inside the mixing chamber. The planetary stirring method has the characteristics of multi-directional and multi-level stirring, which can make different raw materials in the mixing chamber fully contact, roll and blend in three-dimensional space, greatly enhancing the stirring effect and allowing various raw materials to be mixed more evenly. This effectively avoids the occurrence of local raw material accumulation or insufficient mixing, thereby further ensuring the uniformity and consistency of the artificial quartz stone raw material mixing, and providing strong support for the production of high-quality artificial quartz stone products. Attached Figure Description

[0017] Figure 1 This is an isometric view of the structure of the present invention; Figure 2 This is a partial structural diagram of the present invention; Figure 3 This is a schematic diagram of the auxiliary support component structure of the present invention; Figure 4 This is a schematic diagram of the internal structure of the mixing box of the present invention; Figure 5 This is a schematic diagram of the stirring assembly structure of the present invention; Figure 6 This is a schematic diagram of the weighing feeding assembly of the present invention.

[0018] In the diagram: 1. Mounting base; 2. Mixing box; 3. Mounting shell; 4. Stepper motor; 5. Drive gear; 6. Connecting gear ring; 7. Support ring; 8. Support ball; 9. Limiting ring; 10. Feed hopper; 11. Box cover; 12. Fixed bracket; 13. Stirring motor; 14. Stirring shaft; 15. Spiral stirring plate; 16. Rotating circular plate; 17. Rotating shaft; 18. Mixing plate; 19. Connecting gear; 20. Circular gear rail; 21. Fixed shell; 22. Mounting frame; 23. Weighing sensor; 24. Mounting bracket; 25. Mounting plate; 26. Storage box; 27. Discharge pipe; 28. Conveying bin; 29. ​​Feeding pipe; 30. Mounting bracket; 31. Drive motor; 32. Feeding auger; 33. Discharge pipe. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Reference Figure 1-6 A mixing device for producing artificial quartz stone with effective proportioning includes a mounting base 1, a mixing chamber 2 above the mounting base 1, a rotary drive assembly on the surface of the mixing chamber 2, an auxiliary support assembly at the bottom of the mixing chamber 2, a feed hopper 10 fixedly mounted on the rear side of the mounting base 1, a cover 11 fixedly mounted on the top of the mixing chamber 2, a stirring assembly on the surface of the cover 11, a mounting frame 22 fixedly mounted on the top of the mounting base 1, and a weighing feeding assembly on the top of the mixing chamber 2. The rotary drive assembly, in conjunction with the auxiliary support assembly, can drive the mixing chamber 2 to rotate the feed hopper 10, and the weighing feeding assembly can convey the raw materials, allowing the raw materials to enter the interior of the mixing chamber 2 through the feed hopper 10.

[0021] Specifically, the drive assembly includes a mounting housing 3 rotatably mounted on the surface of the mixing chamber 2. The mounting housing 3 is fixedly mounted on the top of the mounting base 1. A stepper motor 4 is fixedly mounted on the top of the mounting housing 3. A mounting shaft is mounted on the output end of the stepper motor 4 via a coupling. A drive gear 5 is fixedly mounted on the surface of the mounting shaft. A connecting gear ring 6 is meshed on the surface of the drive gear 5. The connecting gear ring 6 is fixedly mounted on the surface of the mixing chamber 2. The auxiliary support assembly includes a support ring 7 fixedly mounted on the top of the mixing chamber 2. Support balls 8 are overlapped inside the support ring 7 and contact the top of the mounting base 1. A limit ring 9 is overlapped on the surface of the support balls 8 for limiting movement. The circular ring 9 is fixedly installed on the top of the support ring 7. The stepper motor 4 drives the coupling to rotate the mounting shaft, which in turn drives the drive gear 5 to rotate. The drive gear 5 drives the connecting gear ring 6, which meshes with it, to rotate. The connecting gear ring 6 drives the mixing box 2 to rotate, which in turn drives the support ring 7 to rotate. The support ring 7 drives the support ball 8 and the limiting ring 9 to rotate. Since the support ball 8 is in contact with the top of the mounting base 1, the support ball 8 rotates within the support ring 7 and the limiting ring 9, causing the feed hopper 10 to move below the next discharge pipe 29. This allows the next type of raw material to be conveyed into the feed hopper 10 and then into the mixing box 2, thus sequentially adding the raw materials into the mixing box 2.

[0022] Specifically, the radius of the drive gear 5 is smaller than the radius of the connecting gear ring 6. Both the drive gear 5 and the connecting gear ring 6 are located inside the mounting housing 3. Both the drive gear 5 and the connecting gear ring 6 are made of stainless steel. Stainless steel has high strength and good corrosion resistance, which can effectively resist chemical corrosion and mechanical wear that may occur during the mixing process, thereby extending the service life of the drive gear 5 and the connecting gear ring 6 and ensuring the stable operation of the mixing device. At the same time, this material selection also facilitates subsequent cleaning and maintenance, reducing the maintenance cost of the equipment.

[0023] Specifically, the support ring 7 has a mounting hole at its bottom, and the limiting ring 9 has a limiting hole running through its surface. Both the inner walls of the mounting hole and the limiting hole are in contact with the surface of the support ball 8, ensuring that the support ball 8 can roll freely between the support ring 7 and the limiting ring 9 without falling out. This provides stable auxiliary support for the mixing box 2. When the mixing box 2 rotates under the action of the rotary drive assembly, the support ball 8 effectively distributes the weight of the mixing box 2 and its internal materials, reducing the burden on the drive assembly and improving the overall operational stability of the mixing device. Furthermore, the rolling friction of the support ball 8 is much lower than the sliding friction, reducing energy loss and making the mixing process more efficient and energy-saving.

[0024] Specifically, the mixing assembly includes a fixed bracket 12 fixedly mounted on the top of the cover 11. A mixing motor 13 is fixedly mounted on the top of the fixed bracket 12. A mixing shaft 14 is mounted on the output end of the mixing motor 13 via a coupling. A spiral mixing plate 15 and a rotating circular plate 16 are fixedly mounted on the surface of the mixing shaft 14. A rotating shaft 17 is rotatably mounted inside the rotating circular plate 16. A mixing plate 18 is fixedly mounted on the surface of the rotating shaft 17. A connecting gear 19 is fixedly mounted at the top of the rotating shaft 17. A circular gear 20 is meshed on the surface of the connecting gear 19. A fixed housing 21 is fixedly mounted on the outer surface of the circular gear 20. The fixed housing 21 is fixedly mounted on the bottom of the cover 11. The mixing motor 13 drives the coupling to rotate the mixing shaft 14 and the rotating circular plate 16. The mixing shaft 14 drives the spiral mixing plate 15 to mix the raw materials. The rotating circular plate 16 drives the rotating shaft 17 to perform circular motion. The rotating shaft 17 drives the mixing plate 18 and the connecting gear 19 to perform circular motion. Because the connecting gear 19 meshes with the circular gear rail 20, the connecting gear 19 rolls on the surface of the circular gear rail 20. The rolling connecting gear 19 drives the rotating shaft 17 to rotate, and the rotating shaft 17 drives the connecting gear 19 to stir the raw materials, thereby fully mixing the artificial quartz stone raw materials together. During the stirring process, the spiral stirring plate 15 is designed in a spiral shape, which can effectively turn the raw materials at the bottom of the mixing box 2 upward, avoiding the raw materials from settling at the bottom and ensuring the uniformity of the raw material mixing. Moreover, the mixing plate 18 not only makes a circular motion under the drive of the rotating shaft 17, but also rotates itself due to the meshing of the connecting gear 19 and the circular gear rail 20. This compound motion greatly enhances the stirring effect, allowing raw materials of different properties to be mixed more quickly and fully. The fixed outer shell 21 provides stable support for the circular gear rail 20, ensuring that the meshing transmission of the connecting gear 19 and the circular gear rail 20 is accurate, thereby ensuring the efficient operation of the entire stirring assembly. Specifically, there are four rotating shafts 17 and four connecting gears 19, and the four rotating shafts 17 and four connecting gears 19 are arranged in a circular array. The connecting gears 19 are all inside the fixed housing 21. The rotating circular plate 16 and the fixed housing 21 are rotatably connected. The four rotating shafts 17 revolve under the drive of the rotating circular plate 16. At the same time, due to the meshing of the connecting gears 19 and the circular gear rail 20, the four rotating shafts 17 rotate on their own axis while revolving, thereby driving the mixing plate 18 to fully mix the materials. This unique mixing method can greatly improve the mixing uniformity of the materials and improve the production quality of artificial quartz stone.

[0025] Specifically, the weighing-type feeding assembly includes a weighing sensor 23 fixedly mounted on the top of the mounting frame 22. A mounting bracket 24 is fixedly mounted on the top of the weighing sensor 23. A mounting plate 25 is fixedly mounted on the top of the mounting bracket 24. A storage bin 26 is fixedly mounted inside the mounting plate 25. A discharge pipe 27 is fixedly mounted at the bottom of the storage bin 26. A conveying chamber 28 is fixedly mounted at the bottom of the discharge pipe 27. A discharge pipe 29 is fixedly mounted at the bottom of the conveying chamber 28. A mounting bracket 30 is fixedly mounted at the rear of the conveying chamber 28. A drive mechanism is fixedly mounted at the rear of the mounting bracket 30. The drive motor 31 has a feeding auger 32 installed at its output end via a coupling. The feeding auger 32 is located inside the conveying chamber 28. The raw materials of artificial quartz stone are placed in storage bins 26 at different locations. The raw materials in the storage bins 26 enter the conveying chamber 28 through the discharge pipe 27. Subsequently, the drive motor 31 drives the coupling to rotate the feeding auger 32. The feeding auger 32 pushes the raw materials to the front of the conveying chamber 28, so that the raw materials fall into the feed hopper 10 through the discharge pipe 29, and then enter the mixing box 2 through the feed hopper 10.

[0026] Specifically, a discharge pipe 33 is fixedly installed at the bottom of the mixing box 2, and a control valve is fixedly installed on the surface of the discharge pipe 33. A circular hole is provided through the top of the mounting base 1. The radius of the circular hole is larger than the diameter of the discharge pipe 33. The discharge pipe 33 extends to the bottom of the mounting base 1 through the circular hole to facilitate the discharge of the mixed material. The control valve can accurately control the discharge speed and flow rate of the material. At the same time, the design of the circular hole also facilitates the maintenance and repair of the discharge pipe 33.

[0027] In use: The raw materials of artificial quartz stone are placed in the storage bins 26 at different locations. The raw materials in the storage bins 26 enter the discharge pipe 27 and then enter the conveying chamber 28. Subsequently, the drive motor 31 drives the coupling to rotate the feeding auger 32. The feeding auger 32 pushes the raw materials to the front of the conveying chamber 28, so that the raw materials fall into the feed hopper 10 through the discharge pipe 29, and then enter the mixing chamber 2 through the feed hopper 10. Next, the stepper motor 4 drives the coupling to rotate the mounting shaft, which in turn drives the drive gear 5 to rotate. The drive gear 5 drives the connecting gear ring 6, which meshes with it, to rotate. The connecting gear ring 6 drives the mixing chamber 2 to rotate, which in turn drives the support ring 7 to rotate. The support ring 7 drives the support ball 8 and the limiting ring 9 to rotate. Since the support ball 8 is in contact with the top of the mounting base 1, the support ball 8 rotates within the support ring 7 and the limiting ring 9. The ring 9 rotates, causing the feed hopper 10 to move below the next feed pipe 29, so that the next type of raw material can be transported into the feed hopper 10 and then enter the mixing box 2 through the feed hopper 10. Thus, the raw materials are added to the mixing box 2 in sequence. At the same time as the raw materials are added to the mixing box 2, the stirring motor 13 drives the coupling to drive the stirring shaft 14 and the rotating circular plate 16 to rotate. The stirring shaft 14 drives the spiral stirring plate 15 to stir the raw materials. The rotating circular plate 16 drives the rotating shaft 17 to make a circular motion. The rotating shaft 17 drives the mixing stirring plate 18 and the connecting gear 19 to make a circular motion. Since the connecting gear 19 meshes with the circular toothed rail 20, the connecting gear 19 rolls on the surface of the circular toothed rail 20. The rolling connecting gear 19 drives the rotating shaft 17 to rotate. The rotating shaft 17 drives the connecting gear 19 to stir the raw materials, thereby fully mixing the raw materials of artificial quartz stone together.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An effective proportioning mixing device for producing artificial quartz stone, comprising a mounting base (1), characterized in that, The installation base (1) is provided with a mixing box (2) above, the surface of the mixing box (2) is provided with a rotary drive assembly, the bottom of the mixing box (2) is provided with an auxiliary support assembly, the rear side of the installation base (1) is fixedly provided with a feeding hopper (10), the top of the mixing box (2) is fixedly provided with a box cover (11), the surface of the box cover (11) is provided with a stirring assembly, the top of the installation base (1) is fixedly provided with an installation frame (22), and the top of the mixing box (2) is provided with a weighing type feeding assembly.

2. The mixing device for producing artificial quartz stone according to claim 1, wherein The drive assembly comprises an installation shell (3) rotatably arranged on the surface of the mixing box (2), the installation shell (3) is fixedly installed on the top of the installation base (1), a stepping motor (4) is fixedly arranged on the top of the installation shell (3), an installation shaft is installed on the output end of the stepping motor (4) through a shaft coupling, a drive gear (5) is fixedly arranged on the surface of the installation shaft, a connecting gear ring (6) is arranged in mesh with the surface of the drive gear (5), and the connecting gear ring (6) is fixedly installed on the surface of the mixing box (2).

3. The mixing device for producing artificial quartz stone according to claim 2, wherein The radius of the drive gear (5) is smaller than the radius of the connecting gear ring (6), the drive gear (5) and the connecting gear ring (6) are located in the interior of the installation shell (3), and the drive gear (5) and the connecting gear ring (6) are both made of stainless steel.

4. The mixing device for producing artificial quartz stone according to claim 3, characterized in that, The auxiliary support assembly comprises a support ring (7) fixedly installed on the top of the mixing box (2), support balls (8) are arranged in lap joint in the interior of the support ring (7), the support balls (8) are in contact with the top of the installation base (1), limit circular rings (9) are arranged in lap joint on the surface of the support balls (8), and the limit circular rings (9) are fixedly installed on the top of the support ring (7).

5. The mixing device for producing artificial quartz stone according to claim 4, wherein Limit holes are formed in the surface of the limit circular rings (9), and the inner walls of the installation holes and the limit holes are in contact with the surface of the support balls (8).

6. The mixing device for producing artificial quartz stone according to claim 1, wherein The stirring assembly comprises a fixed support (12) fixedly installed on the top of the box cover (11), a stirring motor (13) is fixedly arranged on the top of the fixed support (12), a stirring shaft (14) is installed on the output end of the stirring motor (13) through a shaft coupling, a spiral stirring plate (15) and a rotating circular plate (16) are fixedly arranged on the surface of the stirring shaft (14), a rotating shaft (17) is rotatably arranged in the interior of the rotating circular plate (16), a mixing stirring plate (18) is fixedly arranged on the surface of the rotating shaft (17), a connecting gear (19) is fixedly arranged on the top end of the rotating shaft (17), a circular toothed rail (20) is arranged in mesh with the surface of the connecting gear (19), a fixed shell (21) is fixedly arranged on the outer surface of the circular toothed rail (20), and the fixed shell (21) is fixedly installed on the bottom of the box cover (11).

7. The mixing device for producing artificial quartz stone according to claim 6, wherein The number of the rotating shafts (17) and the connecting gears (19) is four, and the four rotating shafts (17) and the four connecting gears (19) are circularly arranged, the connecting gears (19) are located in the interior of the fixed shell (21), and the rotating circular plate (16) and the fixed shell (21) are rotatably connected.

8. The mixing device for producing artificial quartz stone according to claim 1, wherein Said weighing type feeding assembly includes a weighing sensor (23) fixedly installed on the top of the mounting frame (22), a mounting rack (24) is fixedly arranged on the top of the weighing sensor (23), a mounting plate (25) is fixedly arranged on the top of the mounting rack (24), a material storage box (26) is fixedly arranged in the mounting plate (25), a discharging pipe (27) is fixedly arranged on the bottom of the material storage box (26), a conveying bin (28) is fixedly arranged on the bottom end of the discharging pipe (27), a discharging pipe (29) is fixedly arranged on the bottom of the conveying bin (28), a mounting bracket (30) is fixedly arranged on the rear side of the conveying bin (28), a driving motor (31) is fixedly arranged on the rear side of the mounting bracket (30), a feeding auger (32) is installed on the output end of the driving motor (31) through a shaft coupling, and the feeding auger (32) is located in the conveying bin (28).

9. The mixing device for producing artificial quartz stone according to claim 1, wherein Said mixing box (2) is fixedly provided with a discharging pipe (33) on the bottom, a control valve is fixedly installed on the surface of the discharging pipe (33), a circular hole is through arranged on the top of the mounting base (1), and the radius of the circular hole is greater than the pipe diameter of the discharging pipe (33).

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