A precise mixing device for soil conditioner raw materials

Abstract

This utility model relates to the field of material mixing equipment technology, and discloses a precise proportioning and mixing device for soil conditioner raw materials. The inner wall of the mixing tank is provided with a mixing chamber, and the inner wall of the mixing chamber is symmetrically rotatably connected to a mixing shaft. This utility model improves the proportioning accuracy of materials by providing a dispersion chamber on the inner wall of the mixing tank and using the dispersion chamber to disperse the materials before mixing. The mixing shaft drives the rotation of the transmission gear, which in turn drives the transmission belt to rotate. Then, the transmission gear drives the turntable and push rod to perform circular motion. Next, the cross sliding plate and the sliding frame achieve reciprocating sliding through the circular motion of the push rod. The meshing of the gear and the rack enables the worm gear to drive the rotation of the worm wheel. Finally, the worm wheel drives the dispersion screw to rotate and disperse the materials. Through the reciprocating rotation and sliding motion, the dispersion screw effectively disperses the materials evenly on the inner wall of the mixing chamber for mixing.

Description

Technical Field

[0001] This utility model relates to the field of material mixing equipment technology, and more specifically, to a device for precise proportioning and mixing of soil conditioner raw materials. Background Technology

[0002] The soil conditioner raw material precision mixing device is an automated device used for precise metering, proportioning and mixing of various soil conditioner raw materials. Its proportioning accuracy directly affects the stability of product quality.

[0003] Traditional mixing devices often employ a fixed stirring structure, including a fixed feeding port at the top and symmetrically arranged rotating stirring shafts within the cavity. This structure has the following drawbacks:

[0004] 1. Insufficient material dispersion:

[0005] Raw materials fall into a local area of ​​the mixing shaft through a fixed feeding port. Especially when processing light powders (such as bentonite) or viscous materials (such as humic acid), a high-concentration accumulation zone is easily formed below the feeding port.

[0006] When the stirring shaft rotates, the shearing force of the blades on high-concentration materials is concentrated at the end, making it difficult to completely break up viscous agglomerates, causing the materials to clump together.

[0007] 2. Decreased accuracy in proportioning:

[0008] The proportions of components within the undispersed clumps deviate from the target ratio, and they are difficult to diffuse evenly in subsequent mixing.

[0009] Clumps increase stirring resistance, cause fluctuations in motor load, and further reduce mixing uniformity.

[0010] 3. Difficult to clean up:

[0011] Agglomerated material adhering to the stirring shaft requires manual cleaning after the machine is stopped, reducing production efficiency.

[0012] Therefore, there is an urgent need for a mixing device that can forcibly disperse materials before stirring, thereby improving the accuracy of the mixing ratio from the source. Utility Model Content

[0013] In order to overcome the shortcomings of the existing technology, this utility model provides a soil conditioner raw material precise proportioning and mixing device, which has the advantage of improving the proportioning accuracy.

[0014] To achieve the above objectives, this utility model provides the following technical solution: a precise mixing device for soil conditioner raw materials, comprising a mixing tank, a mixing chamber on the inner wall of the mixing tank, a mixing shaft symmetrically and rotatably connected to the inner wall of the mixing chamber, a dispersion chamber at the top of the mixing tank, the dispersion chamber being vertically connected to the mixing chamber, a sliding frame slidably connected to the inner wall of the dispersion chamber, a cross sliding plate fixedly connected to one end of the sliding frame, two gears symmetrically and rotatably connected to the other end of the sliding frame, a rack fixedly connected to the inner wall of the mixing tank near the sliding frame, the outer wall of the rack meshing with the outer wall of the gears, a connecting shaft two fixedly connected to the top of the gears, a worm fixedly connected to the top of the connecting shaft two, a worm wheel symmetrically and rotatably connected to the inner wall of the dispersion chamber near the worm, the outer wall of the worm wheel meshing with the outer wall of the worm, a dispersion spiral rod fixedly connected to the inner wall of the worm wheel, and the outer wall of the dispersion spiral rod rotatably connected to the inner wall of the sliding frame.

[0015] As a preferred embodiment of this utility model, a gearbox is fixedly connected to the outer wall of the mixing tank, a motor is fixedly connected to the top of the gearbox, and the inner wall of the gearbox is rotatably connected to one end of the mixing shaft.

[0016] As a preferred embodiment of this utility model, a plurality of stirring blades are fixedly connected to the outer wall of the stirring shaft, and two transmission gears are rotatably connected to the outer wall of the stirring box at the end away from the gearbox, wherein the inner wall of one of the transmission gears is fixedly connected to one end of one of the stirring shafts.

[0017] As a preferred embodiment of this utility model, the outer walls of the two transmission gears are connected to a transmission belt, and the inner walls of the transmission gears are fixedly connected to a connecting shaft. One end of the connecting shaft extends into the inner wall of the dispersion chamber, and the extended end of the connecting shaft is fixedly connected to a turntable.

[0018] As a preferred embodiment of this utility model, a push rod is fixedly connected to the outer wall of the turntable, the outer wall of the push rod is slidably connected to the inner wall of the cross sliding plate, and the outer wall of the cross sliding plate is slidably connected to the inner wall of the dispersion cavity.

[0019] As a preferred embodiment of this utility model, the top of the sliding frame is symmetrically and fixedly connected with a guide plate, and the top of the mixing tank is fixedly connected with a feeding box.

[0020] As a preferred embodiment of this utility model, the outer wall of the guide plate is symmetrically and fixedly connected with two square frames, the inner wall of the square frames is slidably connected with a cleaning frame, and the outer wall of the cleaning frame is fixedly connected with a cleaning brush.

[0021] As a preferred embodiment of this utility model, a plurality of springs are sleeved on the end of the cleaning frame away from the cleaning brush, and a push plate is fixedly connected to the end of the cleaning frame near the springs.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] 1. This utility model features a dispersion chamber on the inner wall of the mixing tank. By dispersing the materials in the dispersion chamber before mixing, the accuracy of the material proportioning is improved. After the motor starts, the stirring shaft drives the rotation of the transmission gear, which in turn drives the turntable and push rod in a circular motion via a transmission belt. Then, the cross sliding plate and sliding frame reciprocate through the circular motion of the push rod. The meshing of the gear and rack drives the worm gear to rotate the worm wheel. Finally, the worm wheel drives the dispersion screw to rotate and disperse the materials. Through the reciprocating rotation and sliding motion, the dispersion screw effectively disperses the materials evenly on the inner wall of the mixing chamber for mixing, thereby effectively improving the proportioning accuracy.

[0024] 2. This utility model features cleaning frames on both sides of the sliding frame. As the sliding frame reciprocates, the two sides of the square frame periodically contact the inner wall of the dispersion chamber. During this contact, the inner wall of the dispersion chamber pushes against the push plate and cleaning frame on the inner wall of the square frame. The cleaning frame, under this pushing force, propels the cleaning brush towards the direction of the dispersing spiral rod. Through the dispersing rotational motion of the spiral rod, the outer wall of the spiral rod is cleaned. When the sliding frame slides in the opposite direction, the cleaning frame, under the elastic force of the spring, causes the cleaning brush to rebound back to the inner wall of the square frame. Then, the cleaning frame on the other side cleans the spiral rod. The intermittent cleaning by the cleaning brushes on both sides prevents the spiral rod from being adsorbed by sticky materials. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0026] Figure 2 This is a front sectional view of the main structure of this utility model;

[0027] Figure 3 This is an exploded view of the main structure of this utility model;

[0028] Figure 4 This is an exploded view of the connection structure between the cross-shaped sliding plate and the turntable of this utility model;

[0029] Figure 5 This is a top sectional view of the main structure of this utility model;

[0030] Figure 6 This utility model Figure 5 A magnified view of part A in the image.

[0031] In the diagram: 1. Mixing tank; 101. Mixing chamber; 2. Mixing shaft; 201. Mixing blade; 202. Gearbox; 203. Motor; 3. Dispersion chamber; 301. Feeding box; 302. Transmission gear; 303. Transmission belt; 304. Turntable; 305. Push rod; 306. Cross sliding plate; 307. Connecting shaft one; 4. Sliding frame; 401. Rack; 402. Gear; 403. Connecting shaft two; 404. Worm gear; 405. Worm; 406. Dispersion spiral rod; 5. Guide plate; 501. Square frame; 502. Cleaning brush; 503. Cleaning frame; 504. Spring; 505. Push plate. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0033] like Figures 1 to 6 As shown, this utility model provides a precise mixing device for soil conditioner raw materials, including a mixing tank 1. A mixing chamber 101 is provided on the inner wall of the mixing tank 1. A mixing shaft 2 is symmetrically rotatably connected to the inner wall of the mixing chamber 101. A dispersion chamber 3 is provided at the top of the mixing tank, and the dispersion chamber 3 is vertically connected to the mixing chamber 101. A sliding frame 4 is slidably connected to the inner wall of the dispersion chamber 3. A cross sliding plate 306 is fixedly connected to one end of the sliding frame 4, and two gears 402 are symmetrically rotatably connected to the other end of the sliding frame 4. A rack 40 is fixedly connected to the inner wall of the mixing tank 1 at the end closest to the sliding frame 4. 1. The outer wall of rack 401 meshes with the outer wall of gear 402. In this embodiment, the gear module m=2, the number of teeth Z=20, and the rack length covers the entire stroke of the sliding frame. Lithium-based grease is added at the meshing point to ensure lubrication. A connecting shaft 403 is fixedly connected to the top of gear 402, and a worm 405 is fixedly connected to the top of connecting shaft 403. A worm wheel 404 is symmetrically rotatably connected to the inner wall of the dispersion cavity 3 and to the end near the worm 405. The outer wall of the worm wheel 404 meshes with the outer wall of the worm 405. The transmission ratio between the worm 405 and the worm wheel 404 is 30:1. To ensure that the worm gear can be effectively driven and avoid self-locking, the inner wall of the worm gear 404 is fixedly connected to the dispersing spiral rod 406, and the outer wall of the dispersing spiral rod 406 is rotatably connected to the inner wall of the sliding frame 4. In this embodiment, the inner wall of the sliding frame is embedded with a double-row angular contact ball bearing (model 7204C), and the end of the dispersing spiral rod is rotatably connected to the sliding frame through the bearing. The axial clearance tolerance is controlled within 0.05-0.1mm to ensure rotational accuracy.

[0034] The outer wall of the mixing tank 1 is fixedly connected to a gearbox 202, the top of the gearbox 202 is fixedly connected to a motor 203, and the inner wall of the gearbox 202 is rotatably connected to one end of the mixing shaft 2.

[0035] Several stirring blades 201 are fixedly connected to the outer wall of the stirring shaft 2. Two transmission gears 302 are rotatably connected to the outer wall of the stirring box 1 at the end away from the gearbox 202. The inner wall of one of the transmission gears 302 is fixedly connected to one end of one of the stirring shafts 2.

[0036] It should be noted that the inner wall of the gearbox 202 has multiple meshing gear structures, and one end of the stirring shaft 2 can achieve synchronous rotational motion through the meshing of multiple gear structures. The top of the gearbox 202 is fixedly connected to the motor 203, and the output end of the motor 203 is connected to the top opening of the gearbox 202. After the motor 203 is started, it uses the transmission of the gearbox 202 to realize the rotation of the two stirring shafts 2. The stirring shafts 2 drive the stirring blades 201 to achieve the rotational stirring work on the inner wall of the stirring chamber 101.

[0037] Among them, the outer walls of the two transmission gears 302 are connected to the transmission belt 303, and the inner walls of the transmission gears 302 are fixedly connected to the connecting shaft 307. One end of the connecting shaft 307 extends into the inner wall of the dispersion cavity 3, and the extended end of the connecting shaft 307 is fixedly connected to the turntable 304.

[0038] It should be noted that the inner wall of one of the transmission gears 302 is fixedly connected to a connecting shaft 307, and the inner wall of the other transmission gear 302 is fixedly connected to one end of one of the stirring shafts 2. One end of the connecting shaft 307 is fixedly connected to a turntable 304. When the stirring shaft 2 rotates through the gearbox 202 and the motor 203, the stirring shaft 2 drives the transmission gear 302 to rotate. The transmission gear 302 drives the other transmission gear 302 to rotate through the transmission belt 303. The transmission gear 302 drives the turntable 304 to rotate through the connecting shaft 307.

[0039] Among them, the outer wall of the turntable 304 is fixedly connected to the push rod 305, the outer wall of the push rod 305 is slidably connected to the inner wall of the cross sliding plate 306, and the outer wall of the cross sliding plate 306 is slidably connected to the inner wall of the dispersion cavity 3.

[0040] It should be noted that the inner wall of the cross sliding plate 306 is provided with a vertical sliding groove, and the two sides of the cross sliding plate 306 are sliding strips. The inner wall of the sliding groove is slidably connected to the outer wall of the push rod 305, and the outer wall of the sliding strip is slidably connected to the side of the dispersion cavity 3 near the turntable 304. When the turntable 304 rotates, the turntable 304 drives the push rod 305 to perform a circular motion. At the same time, the push rod 305 will push the sliding groove during the movement. Under the push of the push rod 305, the cross sliding plate 306 slides horizontally using the sliding strip. When the turntable 304 drives the push rod 305 to rotate one revolution, the cross sliding plate 306 will achieve one reciprocating horizontal sliding.

[0041] In this embodiment, the sliding plate is guided by a linear bearing and uses a grating ruler to provide real-time position feedback, with a motion accuracy of ≤0.1mm. The sliding frequency is matched with the rotation speed of the dispersing screw to ensure that the material dispersion uniformity is ≥90%.

[0042] In this embodiment, the top of the sliding frame 4 is symmetrically and fixedly connected with guide plates 5, and the top of the mixing tank 1 is fixedly connected with a feeding box 301. In this embodiment, the angle between the guide plates and the horizontal plane is adjusted to 40°, and 12 guide plates are arrayed (50mm apart). The surface of the guide plates is coated with polytetrafluoroethylene (PTFE) coating (0.05mm thick) to reduce material adhesion.

[0043] It should be noted that square grooves are provided on both sides of the mixing tank 1 corresponding to the positions of the guide plate 5. When the cross sliding plate 306 slides horizontally back and forth, the cross sliding plate 306 drives the sliding frame 4 to slide synchronously. The sliding frame 4 drives the guide plate 5 to slide horizontally. During the sliding process, the two sides of the guide plate 5 will slide on the inner wall of the square groove to stabilize the horizontal sliding of the sliding frame 4.

[0044] Among them, two square frames 501 are symmetrically fixedly connected to the outer wall of the guide plate 5. A cleaning frame 503 is slidably connected to the inner wall of the square frame 501. A cleaning brush 502 is fixedly connected to the outer wall of the cleaning frame 503. The cleaning brush 502 is made of nylon and its length is consistent with the effective dispersion section of the dispersing spiral rod. It is fixed to the cleaning frame by a snap-fit ​​structure. The brush bristle density is 200 bristles / 10cm² to ensure complete coverage of the inner wall of the mixing chamber.

[0045] Several springs 504 are sleeved on the end of the cleaning frame 503 away from the cleaning brush 502, and a push plate 505 is fixedly connected to the end of the cleaning frame 503 near the springs 504.

[0046] It should be noted that multiple guide rods are fixedly connected between the cleaning frame 503 and the push plate 505. The spring 504 is sleeved on the outer wall of the guide rod. Under normal conditions, the cleaning frame 503 and the push plate 505 are retracted into the inner wall of the square frame 501 by the elastic force of the spring 504. A transverse partition is set on the inner wall of the mixing tank 1 at the position corresponding to the push plate 505. When the sliding frame 4 reciprocates, the sliding frame 4 drives the square frame 501 to move synchronously. When the push plate 505 on one side of the square frame 501 contacts and pushes against the transverse partition, the push plate 505 slides under the push of the transverse partition. At the same time, the push plate 505 pushes the cleaning frame 503 to squeeze the spring 504. At this time, the cleaning frame 503 drives the cleaning brush 502 to extend out of the square frame 501 and contact the mixing blade 201. At this time, the mixing blade 201 is rotating and dispersing. The cleaning brush 502 cleans the adhering material on the surface of the mixing blade 201 with the help of the rotation of the mixing blade 201, thereby cleaning the surface of the mixing blade 201.

[0047] Working principle and usage process of this utility model:

[0048] The specific operation is as follows: the operator needs to feed the material into the inner wall of the feeding box 301. The material passes through the feeding box 301 to the inner wall of the dispersion chamber 3. In the dispersion chamber 3, the material falls between the two dispersion screws 406. At the same time, the operator starts the motor 203. The output end of the motor 203 drives the inner wall of the gearbox 202 to rotate. Then, the gearbox 202 drives the stirring shaft 2 and the stirring blade 201 to rotate. Next, one of the stirring shafts 2 drives one of the transmission gears 302 to rotate. The two transmission gears 302 rotate synchronously through the transmission belt 303. The other transmission gear 302 drives the turntable 304 to rotate through the connecting shaft 307. The turntable 304 drives the push rod 305 to rotate in a circular motion. The cross sliding plate 306 then uses the pushing force of the circular motion of the push rod 305 to move horizontally. Laterally sliding, the cross sliding plate 306 then drives the sliding frame 4 and gear 402 to slide laterally on the inner wall of the dispersion chamber 3. During the sliding process, the gear 402 achieves rotational sliding on one side of the rack 401 by meshing with the rack 401 on the inner wall of the dispersion chamber 3. At this time, the gear 402 drives the worm 405 to rotate through the connecting shaft 403. The worm 405 drives the worm wheel 404 and the dispersing screw 406 to rotate through meshing. At this time, the sliding frame 4 drives the dispersing screw 406 to slide on the inner wall of the dispersion chamber 3, and also achieves the rotation of the dispersing screw 406. Under the sliding rotation of the dispersing screw 406, the material will be dispersed by the two dispersing screws 406. The dispersed material will further fall onto the inner wall of the stirring chamber 101 and be mixed by the synchronous rotation of the two stirring shafts 2.

[0049] When the sliding frame 4 reciprocates horizontally, the square frame 501 on one side of the sliding frame 4 will contact the inner wall of the dispersion chamber 3. At this time, the inner wall of the dispersion chamber 3 will contact and push the push plate 505. After being pushed, the push plate 505 will squeeze the spring 504 and continue to push the cleaning frame 503. The cleaning frame 503 pushes the cleaning brush 502 to slide in the direction of the dispersion spiral rod 406. When the dispersion spiral rod 406 contacts the cleaning brush 502, the cleaning brush 502 cleans its outer wall through the rotation of the dispersion spiral rod 406. When the sliding frame 4 slides in the opposite direction, the push plate 505 loses the pushing force of the inner wall of the dispersion chamber 3 and the spring force of the spring 504 will bounce the cleaning frame 503 and the cleaning brush 502 back to their original positions. Under the reciprocating sliding of the sliding frame 4, the dispersion spiral rod 406 is cleaned periodically. Under the same feeding amount (100kg / time), the ratio error of the traditional device is ±5%, while the error of this device is reduced to ±1.5% after pre-dispersion in the dispersion chamber.

[0050] 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.

[0051] 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 precise mixing device for soil conditioner raw materials, comprising a mixing tank (1), characterized in that: The inner wall of the mixing tank (1) is provided with a mixing chamber (101). The inner wall of the mixing chamber (101) is symmetrically and rotatably connected with a mixing shaft (2). The top of the mixing tank is provided with a dispersion chamber (3). The dispersion chamber (3) is vertically connected to the mixing chamber (101). The inner wall of the dispersion chamber (3) is slidably connected with a sliding frame (4). One end of the sliding frame (4) is fixedly connected with a cross sliding plate (306). The other end of the sliding frame (4) is symmetrically and rotatably connected with two gears (402). The inner wall of the mixing tank (1) and the end located near the sliding frame (4) is fixedly connected with a rack (401). The outer wall of the rack (401) meshes with the outer wall of the gear (402). The top end of the gear (402) is fixedly connected to a connecting shaft two (403). The top end of the connecting shaft two (403) is fixedly connected to a worm (405). The inner wall of the dispersion cavity (3) and the end near the worm (405) are symmetrically and rotatably connected to a worm wheel (404). The outer wall of the worm wheel (404) meshes with the outer wall of the worm (405). The inner wall of the worm wheel (404) is fixedly connected to a dispersion spiral rod (406). The outer wall of the dispersion spiral rod (406) is rotatably connected to the inner wall of the sliding frame (4).

2. The soil conditioner raw material precise proportioning and mixing device according to claim 1, characterized in that: A gearbox (202) is fixedly connected to the outer wall of the mixing tank (1), and a motor (203) is fixedly connected to the top of the gearbox (202). The inner wall of the gearbox (202) is rotatably connected to one end of the mixing shaft (2).

3. The soil conditioner raw material precise proportioning and mixing device according to claim 2, characterized in that: A number of stirring blades (201) are fixedly connected to the outer wall of the stirring shaft (2). Two transmission gears (302) are rotatably connected to the outer wall of the stirring box (1) at the end away from the gearbox (202). The inner wall of one of the transmission gears (302) is fixedly connected to one end of one of the stirring shafts (2).

4. The soil conditioner raw material precise proportioning and mixing device according to claim 3, characterized in that: The outer walls of the two transmission gears (302) are connected to a transmission belt (303), and the inner walls of the transmission gears (302) are fixedly connected to a connecting shaft (307). One end of the connecting shaft (307) extends into the inner wall of the dispersion cavity (3), and the extended end of the connecting shaft (307) is fixedly connected to a turntable (304).

5. The soil conditioner raw material precise proportioning and mixing device according to claim 4, characterized in that: A push rod (305) is fixedly connected to the outer wall of the turntable (304). The outer wall of the push rod (305) is slidably connected to the inner wall of the cross sliding plate (306). The outer wall of the cross sliding plate (306) is slidably connected to the inner wall of the dispersion cavity (3).

6. The soil conditioner raw material precise proportioning and mixing device according to claim 1, characterized in that: The top of the sliding frame (4) is symmetrically fixedly connected with a guide plate (5), and the top of the mixing tank (1) is fixedly connected with a feeding box (301).

7. The soil conditioner raw material precise proportioning and mixing device according to claim 6, characterized in that: Two square frames (501) are symmetrically fixedly connected to the outer wall of the guide plate (5), and a cleaning frame (503) is slidably connected to the inner wall of the square frame (501). A cleaning brush (502) is fixedly connected to the outer wall of the cleaning frame (503).

8. The soil conditioner raw material precise proportioning and mixing device according to claim 7, characterized in that: The cleaning frame (503) has several springs (504) sleeved on the end away from the cleaning brush (502), and a push plate (505) is fixedly connected to the end of the cleaning frame (503) near the springs (504).

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