Based on a vertical stirrer, the detachable multi-segment variable pitch spiral structure

Abstract

This utility model relates to the field of vertical mixer technology, and in particular to a detachable multi-segment variable pitch spiral structure based on a vertical mixer. It includes a frame, on which a mixing mechanism is mounted for material mixing. The mixing mechanism includes: a main component comprising a mixing drum fixed to the frame, an inner cylinder fixed inside the mixing drum, a mixing rod inside the inner cylinder, spiral blades fixed to the outer wall of the mixing rod, and a driving component mounted on the frame for driving the mixing rod to rotate; and an assembly component including a mounting head rotatably mounted inside the upper part of the frame, a bolt rod threaded inside the mounting head, a circular plate fixed to the lower end of the bolt rod, and four circumferentially arranged guide plates fixed to the bottom of the circular plate, with guide grooves inside the guide plates; employing a pin-type quick-release structure, radial locking is achieved through axial drive, and a self-compensating anti-loosening device is provided, significantly improving maintenance efficiency and ensuring connection reliability and operational safety.

Description

Technical Field

[0001] This utility model relates to the field of vertical mixer technology, specifically to a detachable multi-segment variable pitch spiral structure based on a vertical mixer. Background Technology

[0002] Vertical mixers are essential equipment in modern industrial production, widely used in material grinding processes in mining, building materials, and chemical industries. The structural design of its core component, the mixer, directly affects the equipment's working efficiency and maintenance costs.

[0003] According to CN209076811U, a variable pitch spiral agitator for a vertical stirred mill is disclosed. This technology discloses a technical solution including "a spiral shaft, two spiral support plates symmetrically distributed in a spiral pattern on the circumference of the spiral shaft, and spiral liners with the same pitch on the spiral support plates. The width of the spiral liners is greater than the width of the spiral support plates. The two spiral support plates are respectively welded together by several upper spiral support plates and lower spiral support plates. The pitch of the upper spiral support plates is smaller than the pitch of the lower spiral support plates. The spiral liners include upper, middle, and lower spiral liners. The upper spiral liners are fixed on the upper spiral support plates, and the middle and lower spiral liners are fixed on the lower spiral support plates. The pitch of the upper spiral liners is the same as the pitch of the upper spiral support plates, and the pitch of the middle and lower spiral liners is the same as the pitch of the lower spiral support plates. The spiral liners and spiral support plates are fastened together by bolts. The pitch of the agitator increases from top to bottom, which conforms to the actual situation of material particle size stratification in the stirred mill and improves the grinding effect."

[0004] The spiral shafts in the above-mentioned schemes typically use flange connections, which require the removal of a large number of bolts during maintenance. Limited operating space makes disassembly and assembly difficult. The connection components require high alignment accuracy and are cumbersome to adjust. Under vibration, the bolts are prone to loosening and require frequent tightening. The overall disassembly process is time-consuming and labor-intensive, seriously affecting production efficiency. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a detachable multi-segment variable pitch spiral structure based on a vertical mixer. It adopts a pin-type quick-release structure, achieves radial locking through axial drive, and is equipped with a self-compensating anti-loosening device, which greatly improves maintenance efficiency and ensures connection reliability and operational safety.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a detachable multi-segment variable pitch spiral structure based on a vertical mixer, comprising a frame, on which a mixing mechanism is mounted for mixing materials, the mixing mechanism comprising:

[0007] The main component includes a stirring drum fixed on a frame, an inner cylinder fixed inside the stirring drum, a stirring rod inside the inner cylinder, spiral blades fixed on the outer wall of the stirring rod, and a driving component on the frame for driving the stirring rod to rotate.

[0008] The assembly includes a mounting head that is rotatably mounted inside the upper part of the frame. A bolt rod is threaded inside the mounting head. A circular plate is fixed to the lower end of the bolt rod. Four guide plates arranged in a circle are fixed to the bottom of the circular plate. A guide groove is opened inside the guide plate. A plug is slidably mounted on the guide plate through the guide groove. The plug is slidably mounted through the mounting head. A circular hole is opened on the stirring rod and mates with the plug.

[0009] Preferably, the assembly assembly further includes a ring seat fixed inside the mounting head, with a ring sleeve slidably mounted through the upper end of the ring seat, and an anti-loosening component provided inside the ring seat.

[0010] Preferably, the anti-loosening component includes two elastic washers symmetrically arranged at the lower end of the inner ring seat, and the outer edge of the elastic washers has a plurality of circumferentially arranged slots.

[0011] Preferably, the main component further includes a feeding port fixed at the lower front end of the mixing drum, and discharge ports at the left and right ends of the lower part of the mixing drum, with baffles inserted and installed inside the discharge ports.

[0012] Preferably, the driving component includes a driven pulley fixed to the upper end of the stirring rod, a mounting frame is installed on the upper end of the frame, a motor is installed on the mounting frame, a driving pulley is fixed to the output end of the motor, and a belt is installed between the driving pulley and the driven pulley.

[0013] Preferably, the stirring mechanism further includes cavities formed at both ends of the mounting head, and the positions of the cavities correspond to the upper ends of the bolt rods.

[0014] Beneficial effects

[0015] This invention provides a detachable, multi-segment variable pitch spiral structure based on a vertical stirrer. Compared with the prior art, it has the following advantages:

[0016] 1. The axial movement of the rotating bolt rod drives the circular plate and guide plate fixed at its lower end to move synchronously. The guide groove inside the guide plate converts the linear motion of the bolt rod into the radial extension and retraction motion of the plug, allowing the plug to be accurately inserted into or withdrawn from the circular hole at the upper end of the stirring rod, thereby achieving rapid locking or separation of the stirring rod and the assembly components. This improves the efficiency of disassembly and maintenance of the stirring rod, reduces downtime and maintenance costs. Furthermore, the evenly distributed circumference of the plug ensures the reliability and concentricity of power transmission, guaranteeing the stability and safety of the stirring mechanism.

[0017] 2. When the bolt is tightened, pressing down on the ring sleeve will cause it to axially compress the internal anti-loosening component. After being compressed, the anti-loosening component generates a continuous elastic rebound force, which then acts in the opposite direction on the bolt through the ring sleeve. The elastic deformation of the anti-loosening component generates a stable preload between the threaded parts, effectively counteracting the tendency of the threads to loosen due to equipment vibration. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 3 This utility model Figure 2 A schematic diagram of the structure of part A in the middle;

[0021] Figure 4 This is a schematic diagram of the anti-loosening component in this utility model.

[0022] In the diagram: 1. Frame; 2. Mixing mechanism; 21. Main component; 211. Mixing drum; 212. Inner drum; 213. Mixing rod; 214. Spiral blade; 215. Drive component; 2151. Driven pulley; 2152. Mounting bracket; 2153. Motor; 2154. Drive pulley; 2155. Belt; 216. Feed inlet; 217. Discharge outlet; 218. Baffle; 22. Assembly component; 221. Mounting head; 222. Bolt rod; 223. Circular plate; 224. Guide plate; 225. Guide groove; 226. Plug; 227. Ring seat; 228. Ring sleeve; 229. Anti-loosening component; 2291. Elastic washer; 2292. Groove; 23. Cavity. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1 - Figure 4 This utility model provides a technical solution: a detachable multi-segment variable pitch spiral structure based on a vertical mixer, including a frame 1, on which a mixing mechanism 2 is provided for mixing materials, the mixing mechanism 2 including:

[0025] The main component 21 includes a stirring drum 211 fixed on the frame 1, an inner cylinder 212 fixed inside the stirring drum 211, a stirring rod 213 inside the inner cylinder 212, a spiral blade 214 fixed on the outer wall of the stirring rod 213, and a driving component 215 on the frame 1 for driving the stirring rod 213 to rotate.

[0026] Assembly component 22 includes a mounting head 221 rotatably mounted inside the upper part of the frame 1. A bolt rod 222 is threaded inside the mounting head 221. A circular plate 223 is fixed to the lower end of the bolt rod 222. Four guide plates 224 arranged in a circle are fixed to the bottom of the circular plate 223. A guide groove 225 is opened inside the guide plate 224. A plug 226 is slidably mounted on the guide plate 224 through the guide groove 225. The plug 226 is slidably mounted through the mounting head 221. A circular hole is opened on the stirring rod 213 and mates with the plug 226.

[0027] In this embodiment, the axial movement of the rotating bolt rod 222 is driven, thereby pushing the circular plate 223 and guide plate 224 fixed at its lower end to move synchronously. The guide groove 225 inside the guide plate 224 converts the linear movement of the bolt rod 222 into the radial extension and retraction movement of the plug 226, so that the plug 226 can be accurately inserted into or withdrawn from the circular hole at the upper end of the stirring rod 213, thereby realizing the quick locking or separation of the stirring rod 213 and the assembly component 22. This improves the disassembly and maintenance efficiency of the stirring rod 213, reduces downtime and maintenance costs. Furthermore, the evenly distributed circumference of the plug 226 ensures the reliability and concentricity of power transmission, guaranteeing the stability and safety of the stirring mechanism 2 during operation.

[0028] Specifically, the assembly component 22 also includes a ring seat 227 fixed inside the mounting head 221. A ring sleeve 228 is slidably installed through the upper end of the ring seat 227, and an anti-loosening component 229 is provided inside the ring seat 227.

[0029] In this embodiment, when the bolt rod 222 is tightened, pressing down on the ring sleeve 228 can cause it to axially compress the internal anti-loosening component 229. After being compressed, the anti-loosening component 229 generates a continuous elastic rebound force, which then acts in the opposite direction on the bolt rod 222 through the ring sleeve 228. The elastic deformation of the anti-loosening component 229 generates a stable preload force between the threaded parts, effectively counteracting the tendency of the threads to loosen due to equipment vibration.

[0030] Specifically, the anti-loosening component 229 includes two elastic washers 2291 installed inside the lower end of the ring seat 227, which are symmetrically arranged. The outer edge of the elastic washers 2291 has several circumferentially arranged slots 2292.

[0031] In this embodiment, the several slots 2292 opened on the outer edge of the elastic washer 2291 enable it to have the ability to deform radially.

[0032] Specifically, the main component 21 also includes a feeding port 216 fixed at the lower front end of the mixing drum 211, and discharge ports 217 at the left and right ends of the lower part of the mixing drum 211, with baffles 218 inserted and installed inside the discharge ports 217.

[0033] In this embodiment, the material enters the inner cylinder 212 from below through the feeding port 216. The driving component 215 drives the stirring rod 213 to rotate the spiral blades 214, generating upward conveying capacity. When the material is conveyed to the top of the inner cylinder 212, it overflows into the stirring drum 211 under the action of gravity, and then returns to the inner cylinder 212 through the lower channel inside the stirring drum 211 to form a continuous circulating grinding path. When the material needs to be discharged, the baffle 218 is pulled out from the discharge port 217, and the ground material is automatically discharged through the discharge port 217 under the action of gravity.

[0034] Specifically, the drive component 215 includes a driven pulley 2151 fixed to the upper end of the stirring rod 213, a mounting frame 2152 mounted on the upper end of the frame 1, a motor 2153 mounted on the mounting frame 2152, a drive pulley 2154 fixed to the output end of the motor 2153, and a belt 2155 installed between the drive pulley 2154 and the driven pulley 2151.

[0035] In this embodiment, the motor 2153 drives the active pulley 2154 to rotate, and then the power is transmitted to the driven pulley 2151 fixed on the upper end of the stirring rod 213 via the belt 2155, thereby driving the spiral blades 214 on the stirring rod 213 to rotate through the assembly assembly 22.

[0036] Specifically, the stirring mechanism 2 also includes cavity holes 23 at both ends of the mounting head 221, and the positions of the cavity holes 23 correspond to the upper end of the bolt rod 222.

[0037] In this embodiment, the cavity holes 23 opened at both ends of the mounting head 221 are precisely positioned to correspond to the upper end of the bolt rod 222, providing the operator with a tool operation channel that directly reaches the upper end of the bolt rod 222; allowing standard wrenches and other tools to be directly inserted and engaged with the upper end of the bolt rod 222, thereby realizing the rotation operation of the bolt rod 222.

[0038] The working principle and usage process of this utility model are as follows: First, at the start of operation, the material to be processed is fed into the equipment through the feeding port 216 at the front end of the mixing drum 211. The material enters the inner drum 212 from the bottom. The motor 2153 of the drive component 215 is started. Through the transmission of the active pulley 2154, belt 2155 and driven pulley 2151, the power is transmitted to the mixing rod 213 through the assembly component 22, which drives the variable pitch spiral blades 214 on its outer wall to rotate. The spiral blades 214 generate a strong upward conveying capacity, lifting the material from the bottom of the inner drum 212 to the top. Under the action of gravity, the material overflows and falls into the annular space formed by the mixing drum 211 and the inner drum 212, and then returns to the bottom of the inner drum 212 through the bottom channel, forming a continuous circulating grinding path. When the material is ground, the baffle 218 in the discharge port 217 is pulled out, and the material is automatically discharged from the left and right ends under the action of gravity, completing the entire working cycle.

[0039] When maintenance is required, the tool is inserted through the cavity 23 at both ends of the mounting head 221 to rotate the bolt rod 222, driving the circular plate 223 and guide plate 224 to move axially. The plug 226 is radially retracted and disengaged from the circular hole of the stirring rod 213 through the guide groove 225, allowing the stirring rod 213 to be removed as a whole. After maintenance, the stirring rod 213 is reinstalled, the bolt rod 222 is rotated to insert the plug 226 into the circular hole and lock it, and then the ring sleeve 228 is pressed down to compress the elastic washer 2291 to generate an anti-loosening pre-tightening force.

[0040] 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.

[0041] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A detachable multi-segment variable pitch spiral structure based on a vertical stirrer, comprising a frame (1), characterized in that: The frame (1) is provided with a stirring mechanism (2) for stirring materials. The stirring mechanism (2) includes: The main component (21) includes a stirring drum (211) fixed on the frame (1), an inner cylinder (212) fixed inside the stirring drum (211), a stirring rod (213) inside the inner cylinder (212), a spiral blade (214) fixed on the outer wall of the stirring rod (213), and a driving component (215) on the frame (1) for driving the stirring rod (213) to rotate. The assembly component (22) includes a mounting head (221) rotatably mounted inside the upper part of the frame (1). A bolt rod (222) is threaded inside the mounting head (221). A circular plate (223) is fixed at the lower end of the bolt rod (222). Four guide plates (224) arranged in a circle are fixed at the bottom of the circular plate (223). A guide groove (225) is opened inside the guide plate (224). A plug (226) is slidably mounted on the guide plate (224) through the guide groove (225). The plug (226) is slidably mounted through the mounting head (221). A circular hole is opened on the stirring rod (213) and it mates with the plug (226).

2. The detachable multi-segment variable pitch spiral structure based on a vertical stirrer according to claim 1, characterized in that: The assembly assembly (22) also includes a ring seat (227) fixed inside the mounting head (221), a ring sleeve (228) is slidably installed through the upper end of the ring seat (227), and an anti-loosening component (229) is provided inside the ring seat (227).

3. The detachable multi-segment variable pitch spiral structure based on a vertical stirrer according to claim 2, characterized in that: The anti-loosening component (229) includes two elastic washers (2291) installed symmetrically arranged at the lower end inside the ring seat (227), and the outer edge of the elastic washers (2291) has a number of circumferentially arranged slots (2292).

4. The detachable multi-segment variable pitch spiral structure based on a vertical stirrer according to claim 1, characterized in that: The main component (21) also includes a feeding port (216) fixed at the lower front end of the mixing drum (211), and discharge ports (217) at the left and right ends below the mixing drum (211). A baffle (218) is inserted and installed inside the discharge port (217).

5. The detachable multi-segment variable pitch spiral structure based on a vertical stirrer according to claim 1, characterized in that: The drive component (215) includes a driven pulley (2151) fixed to the upper end of the stirring rod (213), a mounting frame (2152) is installed on the upper end of the frame (1), a motor (2153) is installed on the mounting frame (2152), a drive pulley (2154) is fixed to the output end of the motor (2153), and a belt (2155) is installed between the drive pulley (2154) and the driven pulley (2151).

6. The detachable multi-segment variable pitch spiral structure based on a vertical stirrer according to claim 1, characterized in that: The stirring mechanism (2) also includes cavities (23) at both ends of the mounting head (221), and the position of the cavities (23) corresponds to the upper end of the bolt rod (222).

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