Discharging mechanism for stirrer

Abstract

The invention provides a discharging mechanism for a stirring machine, and relates to the field of material conveying, the discharging mechanism is connected between a discharging part of the stirring machine and a feeding part of a spiral conveyor, and the spiral conveyor comprises an auger and a conveying pipe covering the outside of the auger; the device is characterized in that the device comprises a material box, the material box is arranged outside a material conveying pipe and at a material inlet in a covering mode, the material box and the material conveying pipe are fixed, the material conveying pipe and an auger part are embedded in the material box, the material inlet is formed in the end of the material box, the material inlet is close to the material inlet, and the material inlet and the material inlet are communicated with an inner cavity of the material box; the sliding body is embedded in the material box and slidably connected with the material box, the sliding body is located between the inner wall of the material box and the outer wall of the material conveying pipe, and a material pushing plate with the periphery attached to the inner wall of the material box is arranged at the end of the sliding body; the material pushing plate is provided with an arc-shaped notch matched with the rotation track of the auger in shape corresponding to the auger; the discharging blocking device can play a role in blocking discharging of the stirring machine and also can play a role in scraping the inner wall of the material box and preventing the materials from being solidified in the material box, and manual cleaning of the material box is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of material conveying, and in particular to a discharging mechanism for a mixer. Background Art

[0002] In actual operation, the preparation of the mixed material often requires first stirring it evenly in a mixing kettle, and then conveying it through a conveying mechanism, that is, the mixing kettle and the material conveyor need to be shared, and the commonly used material conveyor is a screw conveyor. For example, the feeding system disclosed in the patent application document with publication number CN103625941A connects the feed port of the screw feeder to the discharge port of the silo, and conveys the material to other sections through the screw feeder, wherein a valve for controlling the discharge of the silo is set at the discharge port of the silo. However, in the process of transferring powdered materials from the silo to the screw feeder, the problem of materials being suspended or even blocking the discharge port often occurs. To address this problem, this type of equipment needs to additionally be equipped with corresponding mechanisms to prevent materials from being suspended or blocked. Commonly used mechanisms include the stirring rod anti-blocking mechanism disclosed in the patent document with publication number CN220222367U in the prior art, the method of breaking up agglomerated materials through a vibration component to prevent blockage as disclosed in the patent document with publication number CN220008422U, and the method of blowing external air into the material box to prevent internal powder accumulation and blockage as disclosed in the patent document with publication number CN220008422U. Such anti-blocking structures are generally independent of the valve that controls the discharge of materials.

[0003] However, in addition to the valve structure in the above-mentioned feeding system, when transporting asphalt in industry, the asphalt mixed in a heated mixing tank is generally transferred to a screw conveyor for transportation, and the reciprocating motion of a flat valve plate is used to control the discharge of the mixing tank.

[0004] However, the above structure still has the following problems in actual use: when conveying materials with a certain viscosity such as asphalt, as the valve plate reciprocates to open and close the valve and the use time increases, the material is easy to adhere to the feed port casing, especially to the inner wall of the casing below the valve plate and outside the rotation track of the auger. The open feed port can still be cleaned manually in time, but for the closed feed port, for example, when the feed port of the screw conveyor is connected to the discharge port of the mixer, the cleaning of the feed port is extremely inconvenient. If the asphalt is not cleaned in time, it will solidify on the inner wall of the casing, which will seriously affect the use of the equipment. Even if the above-mentioned conventional mechanism to prevent material overhead or anti-blocking is applied here, the above-mentioned problem cannot be solved. Summary of the invention

[0005] In view of the above problems existing in the prior art, the present invention provides a discharging mechanism for a mixer, which integrates the functions of controlling feed and preventing materials from being suspended or sticking to the wall, and effectively solves the problem of material adhering to a specific position on the inner wall of the casing below the valve plate and outside the rotation track of the auger.

[0006] The technical solution of the present invention to solve the above technical problems is as follows: a discharging mechanism for a mixer, connected between the discharging of the mixer and the feeding of a screw conveyor, the screw conveyor includes an auger and a feeding pipe covered outside the auger, and the feeding pipe is respectively provided with a discharging port and a feeding port; it is characterized in that it includes

[0007] The material box is covered with a cover arranged outside the feeding pipe and at the feeding port. The material box is fixed to the feeding pipe, and the feeding pipe and the auger are embedded in the material box. A feeding port for connecting to the feeding port of the mixer is arranged at the end of the material box. The feeding port is close to the feeding port and the two are respectively connected to the inner cavity of the material box;

[0008] A sliding body is embedded in the material box and slidably connected to the material box. The sliding body is located between the inner wall of the material box and the outer wall of the feed pipe. A push plate is provided at the end of the sliding body, the outer periphery of which is in contact with the inner wall of the material box; the push plate is provided with an arc-shaped notch corresponding to the auger, the shape of which is matched with its rotation trajectory, so that when the sliding body slides in the material box, the push plate can scrape off the material in the material box and outside the rotation trajectory of the auger, and push the material to the feed port; a baffle plate matched with the notch is provided in the material box and near the feed port, so that when the sliding body slides to the point where the push plate and the baffle plate are overlapped, the push plate can jointly block the feed port with the baffle plate.

[0009] Furthermore, the baffle is an end plate of the material conveying pipe.

[0010] Furthermore, a scraper connected to the sliding body is arranged at the rear of the push plate, and the scraper is close to the outer wall of the conveying pipe and is adapted to the shape of the outer wall of the conveying pipe.

[0011] Furthermore, the sliding direction of the push plate in the material box is the same as the axial direction of the auger.

[0012] Furthermore, the sliding body is connected to a door closing drive for driving it to slide in the material box.

[0013] Furthermore, the door sealing drive adopts a telescopic cylinder structure.

[0014] Furthermore, the fixed end of the door sealing drive is connected to the material conveying pipe, and the telescopic end of the door sealing drive is connected to the sliding body.

[0015] Furthermore, the inner cavity of the material box has a rectangular cross-section, a slideway is arranged on the inner wall of the material box, and a sliding block adapted to the slideway is arranged on the outer periphery of the sliding body.

[0016] Furthermore, the feed inlet is located at the junction of the feed pipe and the inner wall of the feed box, and is not lower than the axis of the feed pipe.

[0017] Furthermore, the feed conveying pipe is provided with a heating belt.

[0018] The beneficial effects of the present invention are as follows: the present invention provides a material box with a built-in sliding body, a push plate with a notch of a specific shape at the front end of the sliding body, and a relative position relationship in which the screw conveyor is partially embedded in the material box. The shape of the push plate is adapted to the rotation track of the auger. When in use, the feed port of the material box is connected to the discharge port of the mixer. In the process of sealing the door with the push plate, the material in the material box and outside the rotation track of the auger can be effectively scraped off and pushed to the feed port; the baffle is adapted to the notch and is used together with the push plate to block the feed port, that is, the push plate can not only block the discharge of the mixer, but also scrape the material on the inner wall of the material box and prevent the material from solidifying in the material box, thus avoiding manual cleaning of the material box. The equipment structure is simple and easy to process. The problem that when the valve plate of ordinary structure is used in the prior art, the specific triangular area of ​​the inner wall of the casing below the valve plate and outside the rotation track of the auger is easy to adhere to the material and is inconvenient to clean is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional structural schematic diagram of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the material box of the present invention;

[0021] Figure 3 It is a schematic structural diagram of the sliding body of the present invention;

[0022] Figure 4 It is a schematic structural diagram of the sliding body of the present invention;

[0023] In the figure: 1. material box, 11. feed port, 2. sliding body, 21. push plate, 210. notch, 22. scraper, 23. slider, 3. screw conveyor, 31. auger, 32. feed pipe, 320. heating belt, 321. baffle, 322. discharge port, 323. feed port, 4. door sealing drive. DETAILED DESCRIPTION

[0024] The principles and features of the present invention are described below. The examples given are only used to explain the present invention but not to limit the scope of the present invention.

[0025] As shown in the accompanying drawings, this embodiment provides a discharging mechanism for a mixer, which is connected between the discharging of the mixer and the feeding of a screw conveyor 3. The screw conveyor 3 is specifically a tubular screw conveyor, which includes an auger 31 and a feeding pipe 32 covered outside the auger 31. The feeding pipe 32 is respectively provided with a discharging port 322 and a feeding port 323. The discharging mechanism includes:

[0026] The material box 1 is covered with a cover arranged outside the material delivery pipe 32 and at the material inlet 323. The material box 1 is fixed to the material delivery pipe 32, and the material delivery pipe 32 and the auger 31 are partially embedded in the material box 1. The end of the material box 1 is provided with a feed inlet 11 for connecting to the material outlet of the mixer. The feed inlet 11 is close to the material inlet 323 and the two are respectively connected to the inner cavity of the material box 1;

[0027] The sliding body 2 is embedded in the material box 1 and is slidably connected to the material box 1, and the sliding direction is the same as the axial direction of the auger 31. The sliding body 2 is located between the inner wall of the material box 1 and the outer wall of the material delivery pipe 32. Specifically, the inner cavity cross-section of the material box 1 of this embodiment is rectangular, and the inner wall of the material box 1 is provided with a slideway. The outer periphery of the sliding body 2 is provided with a slider 23 adapted to the slideway; the end of the sliding body 2 is provided with a push plate 21 whose outer periphery is in contact with the inner wall of the material box 1; the push plate 21 is provided corresponding to the auger 31. An arc-shaped notch 210 is provided with a shape adapted to its rotation trajectory, so that when the sliding body 2 slides in the material box 1, the push plate 21 can scrape off the materials in the material box 1 and outside the rotation trajectory of the auger 31, and push the materials to the feed port 11; a baffle 321 adapted to the notch 210 is provided in the material box 1 near the feed port 11, so that when the sliding body 2 slides to the point where the push plate 21 and the baffle 321 are stacked, the push plate 21 can jointly block the feed port 11 with the baffle 321.

[0028] When this embodiment is in use, the material box 1 is connected to the discharge port of the mixer through the feed port 11, and the sliding body 2 is connected to the door closing drive 4 for driving it to slide in the material box 1. The door closing drive 4 of this embodiment adopts a hydraulic cylinder structure, and the fixed end of the door closing drive 4 is connected to the feed pipe 32, and the telescopic end of the door closing drive 4 is connected to the sliding body 2. The sliding body 2 is controlled by the door closing drive 4 to carry the push plate 21 to slide in the material box 1, and the movable range of the push plate 21 is limited to the feed port 323.

[0029] The push plate 21 of the above structure can effectively scrape off all materials in the material box 1 and outside the rotation track of the auger 3 during the forward movement, eliminating dead angles. When the push plate 21 moves forward to overlap with the baffle 321, the excess materials in the material box 1 can be pushed back into the mixer, and at this time, the two form a plane structure to block the feed port 11. The process is also to adjust the size of the feed port 323 by the push plate 21. When discharging is required, the push plate 21 moves backward, and the materials in the mixer can enter the feed pipe 32 through the feed port 11, the inner cavity of the material box 1, and the feed port 323 in sequence, and then be transported to the discharge port 322 for discharge through the action of the auger 31. By using the push plate with the notch 210 structure and the shape of the notch 210 in combination with the auger and the baffle 321, the excess materials in the material box 1 can be effectively pushed back into the mixer during the sealing process of the push plate 21, preventing the materials from adhering to the inner wall of the casing outside the rotation track of the auger. That is, the push plate 21 can not only block the material discharge of the mixer, but also scrape the inner wall of the material box, prevent the material from being lifted up and solidified in the material box, and avoid manual cleaning of the material box.

[0030] When the device is used for conventional material transportation, it can effectively prevent the material from being suspended in the transportation channel; when it is used for the transportation of easy-to-solidify materials such as asphalt mixture, it can effectively prevent the material from adhering to the inner wall of the material box or even solidifying, especially the material adhesion problem in the specific triangular area below the valve plate and the inner wall of the casing outside the rotation track of the auger under the non-embedded connection structure between the conventional screw conveyor and the material box in the prior art and the use of a conventional valve plate with the same cross-sectional shape as the material box, which greatly reduces the work of manual cleaning of the material box.

[0031] In a preferred embodiment of the present invention, the baffle 321 is the end plate of the conveying pipe 32, specifically, the end plate of the conveying pipe 32 is partially embedded in the material box 1, and the driving mechanism of the screw conveyor is installed at the end of the conveying pipe away from the baffle 321. That is, a part of the end plate of the conveying pipe 32 itself is used as the baffle 321, and there is no need to make complex modifications to the screw conveyor 3. Instead, a material box structure with a built-in sliding body 2 is added, and the shape of the notch of the push plate is adapted to the baffle 321, and the material box is assembled to the material inlet of the conveying pipe 32 for use, which can solve the above-mentioned problem, and the equipment structure is simple and easy to process.

[0032] In a preferred embodiment of the present invention, a scraper 22 connected to the sliding body 2 is provided at the rear of the push plate 21, and the scraper 22 is close to the outer wall of the feed pipe 32 and is adapted to the shape of the outer wall of the feed pipe 32. When the push plate 21 moves forward to the baffle 321, the scraper 22 moves to the feed inlet 323. A small gap is maintained between the scraper and the outer wall of the feed pipe, which can ensure that excess material on the outer wall of the feed pipe 32 is scraped off.

[0033] In a preferred embodiment of the present invention, the feed inlet 323 is located at the junction of the feed pipe 32 and the inner wall of the material box 1, and is not lower than the axis of the feed pipe 32. Its function is to obtain a larger feed inlet 323 to ensure smooth feeding to the screw conveyor and to ensure effective cleaning of the dead corners where materials adhere.

[0034] In a preferred embodiment of the present invention, the feed pipe 32 is provided with a heating belt 320 for maintaining the material temperature during the feeding process, ensuring the material fluidity, and preventing the solidification of materials such as asphalt. The heating belt can be wrapped around the outer wall of the outer section of the feed pipe.

Claims

1. A material discharging mechanism for a mixer, connected between the material discharging of the mixer and the material feeding of a screw conveyor (3), wherein the screw conveyor (3) comprises an auger (31) and a material conveying pipe (32) covered outside the auger (31), wherein a material discharging port (322) and a material feeding port (323) are respectively provided on the material conveying pipe (32); characterized in that: include A material box (1) is covered on the outside of the material delivery pipe (32) and at the material inlet (323). The material box (1) is fixed to the material delivery pipe (32), and the material delivery pipe (32) and the auger (31) are partially embedded in the material box (1). A material inlet (11) for connecting to the material outlet of the mixer is provided at the end of the material box (1). The material inlet (11) is close to the material inlet (323), and the two are respectively connected to the inner cavity of the material box (1); The sliding body (2) is embedded in the material box (1) and is slidably connected to the material box (1). The sliding body (2) is located between the inner wall of the material box (1) and the outer wall of the material delivery pipe (32). The end of the sliding body (2) is provided with a pushing plate (21) whose outer circumference is in contact with the inner wall of the material box (1); the pushing plate (21) is provided with an arc-shaped notch (210) corresponding to the auger (31) and whose shape is adapted to its rotation trajectory, so that when the sliding body (2) slides in the material box (1), The push plate (21) can scrape off the materials in the material box (1) and outside the rotation track of the auger (31), and push the materials to the feed port (11); a baffle (321) adapted to the notch (210) is provided in the material box (1) near the feed port (11), so that when the sliding body (2) slides to the point where the push plate (21) and the baffle (321) are stacked, the push plate (21) and the baffle (321) can jointly block the feed port (11).

2. The discharging mechanism for a mixer according to claim 1, characterized in that: The baffle plate (321) is an end plate of the material conveying pipe (32).

3. The discharging mechanism for a mixer according to claim 1, characterized in that: A scraper (22) connected to the sliding body (2) is arranged at the rear of the push plate (21), and the scraper (22) is close to the outer wall of the material conveying pipe (32) and is adapted to the shape of the outer wall of the material conveying pipe (32).

4. The discharging mechanism for a mixer according to claim 1, characterized in that: The sliding direction of the push plate (21) in the material box (1) is the same as the axial direction of the auger (31).

5. The discharging mechanism for a mixer according to claim 1, characterized in that: The sliding body (2) is connected to a door closing drive (4) for driving it to slide in the material box (1).

6. The discharging mechanism for a mixer according to claim 5, characterized in that: The door closing drive (4) adopts a telescopic cylinder structure.

7. The discharging mechanism for a mixer according to claim 6, characterized in that: The fixed end of the door sealing drive (4) is connected to the material conveying pipe (32), and the telescopic end of the door sealing drive (4) is connected to the sliding body (2).

8. The discharging mechanism for a mixer according to claim 1, characterized in that: The inner cavity cross-section of the material box (1) is rectangular, the inner wall of the material box (1) is provided with a slideway, and the outer periphery of the sliding body (2) is provided with a sliding block (23) adapted to the slideway.

9. The discharging mechanism for a mixer according to claim 1, characterized in that: The feed inlet (323) is located at the junction of the feed pipe (32) and the inner wall of the material box (1), and is not lower than the axis of the feed pipe (32).

10. The discharging mechanism for a mixer according to claim 1, characterized in that: The material conveying pipe (32) is provided with a heating belt (320).

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