Raw material mixing device for pavement board production
By combining worm gear blades and spiral blades with a vertical channel and vertical baffle design, the problem of low mixing efficiency in existing mixing equipment is solved, achieving efficient and uniform mixing of polyethylene paving material, shortening mixing time and improving mixing quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENGSHUI UNIVERSITY
- Filing Date
- 2025-07-14
- Publication Date
- 2026-06-23
AI Technical Summary
Existing mixing equipment has low mixing efficiency and poor circulation effect when mixing polyethylene paving slabs, resulting in insufficient mixing of raw materials and additives and prolonging the mixing time.
The mixing method employs a combination of worm gear blades and helical blades. The raw materials are lifted by a vertical channel and helical blades and discharged through the top of the vertical channel. The axial and radial flow of the raw materials is improved by using vertical baffles and ring sleeves. The addition of supplementary components ensures uniform mixing of additives.
It improves mixing efficiency, shortens stirring time, enhances stirring quality, achieves uniform distribution of additives, and is easy to operate and use.
Smart Images
Figure CN224391570U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mixing device technology, and in particular to a raw material mixing device for paving slab production. Background Technology
[0002] Polyethylene paving slabs, as a new type of paving slab used to replace steel paving slabs, require high-density polyethylene to be uniformly mixed with additives such as antioxidants, UV stabilizers, and color masterbatches during production. Currently, the mixing equipment relies solely on the mixing blades to mix the raw materials, resulting in low mixing efficiency, poor circulation, and prolonged overall mixing time, which is not conducive to the full mixing of raw materials and additives. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a raw material mixing device for paving slab production, which, by means of worm gear blade stirring and by the cooperation between vertical channel and spiral blade, can lift the raw material in the central area and discharge it from the top, thereby changing the mixing area of the raw material, improving the mixing effect and shortening the overall working time.
[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model includes: a storage chamber and a main shaft; the storage chamber has a vertical channel in the center, the top of the vertical channel is open, and the bottom is provided with a feed port; the main shaft passes through the bottom of the vertical channel and has a worm gear blade at the bottom end; the top of the main shaft is connected to the top of the storage chamber, and the main shaft area located in the vertical channel is provided with a spiral blade.
[0005] Preferably, the inner wall of the storage chamber is provided with multiple baffles evenly distributed along the circumference.
[0006] Preferably, multiple feed inlets are used and evenly distributed at the bottom of the vertical channel.
[0007] Preferably, the top of the vertical channel is provided with a ring sleeve connected to the spiral blades, and the ring sleeve is provided with multiple guide grooves.
[0008] Preferably, the lengths between two adjacent feed troughs are different.
[0009] Preferably, the top of the helical blade is provided with a support disk.
[0010] Preferably, the support plate is provided with a supplementary component, which includes a material box and a spring; the bottom of the material box is provided with a liquid outlet, and one side is provided with a fixing rod connected to the support plate; the spring is fitted onto the fixing rod.
[0011] Preferably, a force-bearing wheel is provided on the other side of the material box, and a guide rail that contacts the force-bearing wheel is provided on the top of the storage chamber.
[0012] Preferably, a fixed horizontal plate connected to the inner wall of the storage chamber is provided above the vertical channel, and the upper surface of the fixed horizontal plate is pointed.
[0013] Preferably, a crossover frame is provided above the storage chamber, and a motor connected to the main shaft is provided at the center of the crossover frame.
[0014] Compared with the prior art, the present invention has the following advantages:
[0015] 1. The spiral blades lift the raw materials in the bottom area and discharge them from the top of the vertical channel, which can transport the raw materials in the bottom area to the upper area for mixing. Combined with the worm gear blades at the bottom, it greatly improves the overall mixing effect and increases the mixing efficiency.
[0016] 2. The vertical baffle design allows the raw materials to flow axially and radially, improving the mixing effect and enhancing the mixing quality;
[0017] 3. The ring design disperses the lifted raw materials in the surrounding area during rotation, rather than concentrating them around the vertical channel, thus improving the mixing effect;
[0018] 4. The design of the supplementary components allows additives to be added to the material bin during device operation. The addition is achieved as the device rotates, facilitating mixing with the raw materials. The position of the material bin can also be adjusted as needed, making operation convenient. Attached Figure Description
[0019] Figure 1 A schematic diagram of the overall structure of a raw material mixing device for paving slab production;
[0020] Figure 2 This is a schematic diagram of the internal structural layout of the storage chamber;
[0021] Figure 3 To supplement the component layout diagram;
[0022] Figure 4 A schematic diagram of the connection at the main shaft;
[0023] Figure 5 To supplement the component structure diagram;
[0024] Figure 6 This is a schematic diagram of a vertical channel structure;
[0025] Figure 7 This is a schematic diagram of the bottom outlet of the storage chamber.
[0026] In the diagram: 1. Storage chamber; 2. Main shaft; 3. Vertical channel; 4. Supplementary component; 101. Baffle; 102. Guide rail; 103. Crossover frame; 104. Motor; 201. Worm gear blade; 202. Helical blade; 203. Support plate; 301. Feed inlet; 302. Ring sleeve; 303. Guide chute; 304. Fixed cross plate; 401. Material box; 402. Spring; 403. Liquid outlet; 404. Fixed rod; 405. Force-bearing wheel. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.
[0028] Specific implementation method one: Combining Figure 1-7 As shown, a raw material mixing device for paving slab production includes: a storage chamber 1 and a main shaft 2; the storage chamber 1 has a vertical channel 3 at its center, the top of the vertical channel 3 is open to allow the raw material to be discharged smoothly, and the bottom of the vertical channel 3 has a feed inlet 301. The main shaft 2 passes through the bottom of the vertical channel 3 and has a worm gear blade 201 installed at its bottom end. The top of the main shaft 2 is connected to the top of the storage chamber 1, and the area of the main shaft 2 located in the vertical channel 3 is provided with a spiral blade 202.
[0029] By adding polyethylene raw material into storage chamber 1 and adding additives, the main shaft 2 rotates to drive the raw material to be stirred and mixed. At the same time, during the rotation of the main shaft 2, the spiral blades 202 lift the raw material located at the bottom area and drop it again from the opening at the top of the vertical channel 3 to the top of the raw material in the nearby area, realizing the circulation of the raw material, changing its position, and improving the uniformity of mixing.
[0030] Preferred embodiments, in combination Figure 1 and Figure 2 As shown, the inner wall of the storage chamber 1 is evenly distributed with multiple vertically arranged baffles 101 along the circumference, which can realize the axial and radial flow of raw materials and improve the mixing effect. As for the number of baffles 101, the diameter of the storage chamber 1 in this device is not large, so 2-6 baffles are preferred.
[0031] Preferred embodiments, in combination Figure 4 As shown, multiple feed inlets 301 are used and evenly distributed at the bottom of the vertical channel 3 to increase the feed volume and facilitate the feeding operation of the spiral blades 202. Preferably, there are 4 feed inlets 301, which can realize feeding from multiple directions.
[0032] Preferred embodiments, in combination Figure 3 and Figure 4 As shown, the top of the vertical channel 3 is provided with a ring 302 connected to the spiral blade 202, and the ring 302 is provided with multiple guide grooves 303. The ring 302 rotates together with the main shaft 2, and the lifted raw material is discharged from the guide grooves 303. Among them, two positioning rods are arranged above the ring 302. The positioning rods are fixedly connected to the top of the spiral blade 202, and the bottom of the positioning rods is fixedly connected to the upper surface of the ring 302, so that they can rotate with the main shaft 2 without affecting the normal lifting of the material. This is because the ring 302 only provides a space for discharging material and has a small height. The cooperation between the spiral blade 202 and the vertical channel 3 is the main working part for lifting the material. Alternatively, the ring 302 can be designed to be fixedly installed, that is, the bottom surface of the ring 302 is positioned with the top of the vertical channel 3 through the existing slot and block structure, while the positioning rods are in contact with the upper surface to achieve axial positioning and realize the function of directional distribution of raw materials.
[0033] Preferred embodiments, in combination Figure 4 As shown, the different lengths between two adjacent feed troughs 303 can create different raw material distributions in different areas, which is more conducive to mixing. The number of feed troughs 303 can be three; in three states, the lengths between the three feed troughs 303 can be different. When four are used, the current feed trough 303 has a different length from the feed troughs 303 on both sides. Figure 6 As shown in the diagram, the inner surface of the feed chute 303 is inclined to facilitate the sliding of raw materials.
[0034] Preferred embodiments, in combination Figure 2 As shown, the top of the spiral blade 202 is provided with a support plate 203, which provides an installation position for the positioning rod.
[0035] Preferred embodiments, in combination Figure 3-5 As shown, the support plate 203 is provided with a supplementary component 4, which includes a material box 401 and a spring 402. The bottom of the material box 401 is provided with a liquid outlet 403, and a fixing rod 404 connected to the support plate 203 is provided on one side. The fixing rod 404 is machined with external threads and a nut is installed at the end. The spring 402 is fitted on the fixing rod 404 to position the material box 401. By rotating the nut, the spring 402 is compressed to adjust the position of the material box 401 and change the addition position of the additive.
[0036] Preferred embodiments, in combination Figure 3 and Figure 5As shown, a force-receiving wheel 405 is provided on the other side of the material box 401, and a guide rail 102 is provided on the top of the material storage chamber 1 that contacts the force-receiving wheel 405. The surface of the guide rail 102 is wavy. During the rotation, the material box 401 can be pushed to compress and reset the spring 402, so as to achieve an S-shaped addition route, which is more conducive to mixing with the raw materials.
[0037] Preferred embodiments, in combination Figure 4 As shown, a fixed horizontal plate 304 connected to the inner wall of the storage chamber 1 is provided above the vertical channel 3, and the upper surface of the fixed horizontal plate 304 is pointed, which can prevent raw materials from remaining on the fixed horizontal plate 304. At the same time, during the rotation of the material box 401, the additives dripping onto the surface can also be diverted to reduce residue.
[0038] Preferred embodiments, in combination Figure 4 As shown, a crossover frame 103 is provided above the storage chamber 1, and a motor 104 connected to the main shaft 2 is provided at the center of the crossover frame 103 to control the rotation of the main shaft 2. The design of the crossover frame 103 increases the space above the storage chamber 101, making it convenient to add raw materials.
[0039] Combination Figure 7 As shown, the bottom of the storage chamber 101 is provided with an outlet, and a sliding plate is provided at the outlet position to control the opening and closing of the outlet, which facilitates the discharge operation after mixing is completed.
[0040] As an automation solution, this device can also improve upon the existing structure by introducing electronic control modules such as sensors, timers, and PLCs. Pt100 resistance temperature sensors are installed on the inner wall of the storage chamber 1 or near the main shaft 2 to monitor material temperature changes during mixing, preventing excessive temperature from affecting raw material performance. To ensure the stability and efficiency of the mixing process, a photoelectric encoder (model: OMRON E6B2-CWZ6C) can be installed on the output shaft of the motor 104 or the top of the main shaft 2 to collect speed information, thereby achieving closed-loop speed regulation. The control module uses a Siemens S7-1200 series PLC, which integrates digital input / output modules (such as SM 1223) and analog acquisition modules (such as SM 1231AI). The device (4x13bit) collects and processes data from various sensors, and controls the motor start / stop and stirring time setting according to preset programs. At the same time, a touch screen is installed on the outside of the device, and operators can also set parameters, view operating status, alarm information, etc. through the Kunlun Tongtai TPC1061Ti touch screen. The interface is intuitive and easy to operate.
[0041] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.
Claims
1. A raw material mixing device for paving slab production, characterized in that, include: Storage chamber (1) and main shaft (2); the storage chamber (1) has a vertical channel (3) at its center, the top of the vertical channel (3) is open, and the bottom is provided with a feed inlet (301); the main shaft (2) passes through the bottom of the vertical channel (3) and is provided with a worm gear blade (201) at the bottom end, the top of the main shaft (2) is connected to the top of the storage chamber (1), and the area of the main shaft (2) in the vertical channel (3) is provided with a spiral blade (202).
2. The raw material mixing device for paving slab production according to claim 1, characterized in that: The inner wall of the storage chamber (1) is evenly distributed with multiple baffles (101) along the circumferential direction.
3. The raw material mixing device for paving slab production according to claim 1, characterized in that: Multiple feed inlets (301) are used and are evenly distributed at the bottom of the vertical channel (3).
4. The raw material mixing device for paving slab production according to claim 1, characterized in that: The top of the vertical channel (3) is provided with a ring (302) connected to the spiral blade (202), and the ring (302) is provided with a plurality of guide grooves (303).
5. The raw material mixing device for paving slab production according to claim 4, characterized in that: The lengths between two adjacent feed troughs (303) are different.
6. The raw material mixing device for paving slab production according to claim 4, characterized in that: The top of the spiral blade (202) is provided with a support disk (203).
7. The raw material mixing device for paving slab production according to claim 6, characterized in that: The support plate (203) is provided with a supplementary component (4), which includes a material box (401) and a spring (402); the bottom of the material box (401) is provided with a liquid outlet (403), and a fixing rod (404) connected to the support plate (203) is provided on one side; the spring (402) is fitted on the fixing rod (404).
8. The raw material mixing device for paving slab production according to claim 7, characterized in that: The material bin (401) is provided with a force-bearing wheel (405) on the other side, and the storage chamber (1) is provided with a guide rail (102) on the top that contacts the force-bearing wheel (405).
9. The raw material mixing device for paving slab production according to claim 1, characterized in that: Above the vertical channel (3) is a fixed horizontal plate (304) connected to the inner wall of the storage chamber (1), and the upper surface of the fixed horizontal plate (304) is pointed.
10. A raw material mixing device for paving slab production according to claim 1, characterized in that: A crossover frame (103) is provided above the storage chamber (1), and a motor (104) connected to the main shaft (2) is provided at the center of the crossover frame (103).