A concrete mixing plant

Abstract

This utility model discloses a concrete mixing plant, including a mixing plant, an annular barrel fixedly connected to the output end of the mixing plant, a cavity annularly opened on the bottom surface of the annular barrel, a discharge pipe fixedly connected to the bottom end of the annular barrel, a groove opened on the inner side wall of the discharge pipe, a sealing strip fitting against the surface of the discharge pipe, a scraper with a longitudinal cross-sectional shape of a Z-shape rotated 180° clockwise, the vertical bar at the bottom end of the scraper near the center of the discharge pipe has an arc surface and its arc surface is on the same arc surface as the inner arc surface of the discharge pipe, the vertical bar wall at the bottom end of the scraper gradually decreases along the direction near the output end of the discharge pipe, the minimum distance between the two ends of the C-shaped bar is equal to the width of the horizontal bar of the scraper, the scraper is retracted into the groove after use, reducing the amount of concrete adhering to the scraper surface, while the scraper does not occupy the output space of the discharge pipe, increasing the output space of the discharge pipe, thereby increasing the output amount of concrete per unit time of the discharge pipe and reducing working time.

Description

Technical fields:

[0001] This utility model relates to the field of batching plant technology, specifically to a concrete batching plant. Background technology:

[0002] A concrete batching plant, also known as a concrete mixing plant, is a manufacturing equipment used in the concrete construction process. A mixer truck is a special truck used to transport concrete from the batching plant. The batching plant discharges concrete through the outlet pipe to the feed hopper at the rear of the mixer truck, where it enters the mixing drum to load the concrete from the batching plant onto the truck. Currently, after the batching plant loads the concrete, the leftover concrete tends to stick to the inner wall of the outlet pipe. Over time, this reduces the discharge volume per unit time. It is necessary to operate the controller to drive the scraper to rotate inside the outlet pipe and clean the inner wall.

[0003] The existing scraper is attached to the inner wall of the discharge pipe. The drive mechanism drives the scraper to rotate inside the discharge pipe to clean its inner wall. The scraper is located inside the discharge pipe, which can easily block the concrete from falling. At the same time, the concrete tail material can easily stick to the surface of the scraper, occupying the output space of the discharge pipe. This results in a smaller cross-sectional area at the output end of the discharge pipe, reducing the output of concrete per unit time and extending the working time. Utility Model Content:

[0004] Therefore, the purpose of this utility model is to provide a concrete mixing plant that overcomes the problems of existing technology where the scraper is attached to the inner wall of the discharge pipe, the drive mechanism drives the scraper to rotate inside the discharge pipe to clean its inner wall, the scraper is located inside the discharge pipe, which easily obstructs the concrete from falling, and the concrete tail material is also easy to stick to the surface of the scraper, occupying the output space of the discharge pipe, resulting in a smaller cross-sectional area at the output end of the discharge pipe, reducing the output of concrete per unit time, and prolonging the working time.

[0005] This utility model is implemented by the following technical solution:

[0006] A concrete mixing plant includes a mixing station, an annular barrel fixedly connected to the output end of the mixing station, a cavity annularly formed on the bottom surface of the annular barrel, a discharge pipe fixedly connected to the bottom end of the annular barrel, a groove formed on the inner side wall of the discharge pipe, a scraper slidably fitted within the groove, an annular groove formed on the top surface of the discharge pipe, a C-shaped rod rotatably fitted within the annular groove, and sealing strips fixedly embedded on both the top and bottom surfaces of the C-shaped rod, the top surface of the sealing strip at the top surface fitting against the bottom surface of the annular barrel, and the bottom surface of the sealing strip at the bottom surface fitting against the top surface of the discharge pipe. The scraper rod is surface-fitted, with its top end passing between the two ends of the C-shaped rod and into the cavity of the annular barrel, and is fixedly connected to the drive mechanism. The drive mechanism is fixedly connected to the annular barrel and can drive the scraper rod to rotate while adhering to the inner wall of the discharge pipe. The scraper rod is slidably connected to the C-shaped rod. A magnet block that is magnetically connected to the scraper rod is slidably fitted in the groove. An electric push rod is fixedly connected between one side wall of the magnet block and the annular barrel. A sealing strip is fixedly embedded in the side wall of the magnet block, and the sealing strip is adhered to the surface of the discharge pipe.

[0007] Preferably, the longitudinal cross-sectional shape of the scraper is a Z-shape rotated 180° clockwise, and the surface of the vertical rod at the bottom of the scraper near the center of the discharge pipe is an arc surface, and its arc surface is on the same arc surface as the inner arc surface of the discharge pipe.

[0008] Preferably, the vertical wall of the scraper at the bottom gradually decreases in size along the direction closer to the output end of the discharge pipe.

[0009] Preferably, the minimum distance between the two ends of the C-shaped rod is equal to the width of the crossbar of the scraper.

[0010] Preferably, the transverse cross-section of the side wall of the magnet block near the bottom vertical rod of the C-shaped rod is an arc surface.

[0011] Preferably, the driving mechanism includes a motor fixedly connected to the side wall of the annular barrel cavity, a helical gear fixedly connected to the output end of the motor, a helical gear ring fitted on the bottom end of the helical gear, a limiting ring fitted on the bottom and top surfaces of the helical gear ring, the limiting ring being fitted on and fixedly connected to the annular barrel, a dovetail groove being formed on the bottom surface of the helical gear ring, the top vertical rod of the scraper rod passing through the dovetail groove and slidingly disposed in the dovetail groove, and the cross section of the top vertical rod of the scraper rod matching the dovetail groove.

[0012] The advantages of this invention are as follows: A scraper is slidably embedded in the inner wall of the discharge pipe. When the scraper needs to be rotated for cleaning, the controller operates to push the scraper into the discharge pipe through a magnet at the output end of the electric push rod. Then, the drive mechanism is operated to make the scraper rotate inside the discharge pipe to clean its inner wall. After the scraper is used, it is returned to the chute. This reduces the amount of concrete adhering to the scraper surface, and the scraper does not need to occupy the output space of the discharge pipe, thus increasing the output space of the discharge pipe and increasing the amount of concrete output per unit time, thereby reducing working time. Attached image description:

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a structural diagram of the present invention;

[0015] Figure 2 This is a cross-sectional view (AA) of the structure described in this utility model;

[0016] Figure 3 This is a three-dimensional sectional view of the structural part 3 described in this utility model;

[0017] Figure 4 This is a perspective view of the structural component 5 described in this utility model;

[0018] Figure 5 This is a partial enlarged view of the structure described in this utility model.

[0019] In the diagram: 1. Mixing plant; 2. Annular drum; 3. Discharge pipe; 4. Slide chute; 5. Scraper; 6. Electric push rod; 7. Magnet block; 8. Sealing strip; 9. Annular groove; 10. C-shaped rod; 11. Sealing gasket; 12. Motor; 13. Helical gear; 14. Helical tooth ring; 15. Limiting ring; 16. Dovetail groove. Detailed implementation method:

[0020] To make the objectives and advantages of this utility model clearer, the utility model will be further described below with reference to the embodiments; it should be understood that the specific embodiments described herein are only for explaining this utility model and are not intended to limit this utility model.

[0021] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0022] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0023] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] like Figures 1-5 As shown, this utility model provides the following technical solution: a concrete mixing plant, including a mixing plant 1, an annular barrel 2 fixedly connected to the output end of the mixing plant 1, a cavity annularly opened on the bottom surface of the annular barrel 2, a discharge pipe 3 fixedly connected to the bottom end of the annular barrel 2, a sliding groove 4 opened on the inner side wall of the discharge pipe 3, a scraper 5 slidably attached to the sliding groove 4, an annular groove 9 opened on the top surface of the discharge pipe 3, a C-shaped rod 10 rotatably attached to the annular groove 9, a sealing strip 8 fixedly embedded on both the top and bottom surfaces of the C-shaped rod 10, the top surface of the sealing strip 8 being attached to the bottom surface of the annular barrel 2, and the bottom sealing strip 8 being attached to the bottom surface of the annular barrel 2. The bottom surface of the scraper 8 is in contact with the top surface of the discharge pipe 3. The top end of the scraper 5 passes between the two ends of the C-shaped rod 10 and into the cavity of the annular barrel 2 and is fixedly connected to the drive mechanism. The drive mechanism is fixedly connected to the annular barrel 2. The drive mechanism can drive the scraper 5 to rotate in contact with the inner wall of the discharge pipe 3. The scraper 5 is slidably connected to the C-shaped rod 10. A magnet block 7 that is magnetically connected to the scraper 5 is slidably attached in the groove 4. An electric push rod 6 is fixedly connected between one side wall of the magnet block 7 and the annular barrel 2. A sealing strip 8 is fixedly embedded in the side wall of the magnet block 7. The sealing strip 8 is in contact with the surface of the discharge pipe 3.

[0025] Please combine Figure 1As shown, during operation, the controller causes the mixing plant 1 to discharge concrete. The concrete material is discharged along the discharge pipe 3. The scraper 5 slides into the groove 4 on the inner wall of the discharge pipe 3, without occupying the output space of the discharge pipe 3, thus increasing the output of the discharge pipe 3 and increasing the output of concrete per unit time, reducing working time. When the concrete raw materials in the mixing plant 1 are discharged along the discharge pipe 3 to the concrete truck, the concrete tail material easily adheres to the inner wall of the discharge pipe 3. At this time, the controller causes the output end of the electric push rod 6 to push the magnet block 7 to move. The magnet block 7 pushes the scraper 5 to move, causing the bottom vertical rod of the scraper 5 to gradually slide out of the groove 4. The scraper 5 slides between the two ends of the C-shaped rod 10. When the output end of the electric push rod 6 is extended to its longest length, the bottom vertical rod of the scraper 5 just slides out of the groove 4. Then, the controller causes the drive mechanism to start working. The output end of the drive mechanism drives the scraper 5 to rotate along the inner wall of the discharge pipe 3, which scrapes the inner wall of the discharge pipe 3. The cleaning process involves the scraper 5 cleaning the side wall of the magnet 7 as it passes over it. The scraper 5 drives the C-shaped rod 10 to rotate within the annular groove 9. The multiple sealing gaskets 11 ensure the sealing between the annular barrel 2 and the C-shaped rod 10, as well as between the C-shaped rod 10 and the discharge pipe 3. The controller enables the drive mechanism to rotate the scraper 5 a certain number of times before it stops at its original position and comes into contact with the side wall of the magnet 7. The magnet 7 magnetically holds the scraper 5 in place. Then, the controller activates the electric push rod 6, which pulls the magnet 7 to move. The magnet 7 then moves the scraper 5 back into the chute 4. This reduces the amount of concrete adhering to the surface of the scraper 5 while eliminating the need for the scraper 5 to occupy the output space of the discharge pipe 3, thus increasing the output space of the discharge pipe 3 and increasing the concrete output per unit time, reducing working time. The sealing strip 8 ensures the sealing between the magnet 7 and the discharge pipe 3.

[0026] The longitudinal cross-sectional shape of the scraper 5 is a Z-shape rotated 180° clockwise, which facilitates the connection between the top of the scraper 5 and the drive mechanism. The vertical rod at the bottom of the scraper 5 near the center of the discharge pipe 3 is an arc surface, and its arc surface is on the same arc surface as the inner arc surface of the discharge pipe 3, which reduces the occupation of the internal space of the discharge pipe 3 and increases the material conveying space of the discharge pipe 3.

[0027] The vertical wall at the bottom of the scraper 5 gradually decreases in size along the direction close to the output end of the discharge pipe 3, which facilitates the concrete material adhering to the side wall of the scraper 5 to fall due to its own gravity, reducing the friction between the concrete and the side wall of the scraper.

[0028] The minimum distance between the two ends of the C-shaped rod 10 is equal to the width of the crossbar of the scraper 5, which makes it easier for the scraper 5 to drive the C-shaped rod 10 to rotate and reduce the gap between the scraper 5 and the C-shaped rod 10.

[0029] The transverse cross-section of the side wall of the magnet 7 near the bottom vertical rod of the C-shaped rod 10 is an arc surface. When the output end of the electric push rod 6 extends to its maximum length, it pushes the magnet 7 to move. The magnet 7 drives the scraper 5 to move to the discharge pipe 3. At this time, the transverse cross-section of the side wall of the magnet 7 near the bottom vertical rod of the C-shaped rod 10 is an arc surface, which is on the same arc surface as the inner arc surface of the discharge pipe 3. This facilitates the rotation of the scraper 5 to clean the surface of the discharge pipe 3 and the magnet 7.

[0030] Please combine Figure 1 , Figure 5 As shown in the embodiment of the drive mechanism, the drive mechanism includes a motor 12 fixedly connected to the side wall of the cavity of the annular barrel 2. A helical gear 13 is fixedly connected to the output end of the motor 12. A helical gear ring 14 fitted and sleeved on the annular barrel 2 is meshed at the bottom end of the helical gear 13. A limiting ring 15 is fitted on both the bottom and top surfaces of the helical gear ring 14. The limiting ring 15 is sleeved on the annular barrel 2 and fixedly connected to it. A dovetail groove 16 is opened on the bottom surface of the helical gear ring 14. The top vertical rod of the scraper 5 passes through the dovetail groove 16 and is slidably disposed in the dovetail groove 16. The cross section of the top vertical rod of the scraper 5 matches the dovetail groove 16.

[0031] Please combine Figure 1 As shown, when the scraper 5 is indirectly pushed into the discharge pipe 3 via the electric push rod 6, the push rod 6 slides in the dovetail groove 16. The controller starts the motor 12, and the output end of the motor 12 drives the helical gear 13 to rotate. The helical gear 13 drives the helical gear ring 14 to rotate, which in turn drives the dovetail groove 16 to rotate. The dovetail groove 16 then drives the scraper 5 to rotate, cleaning the inner wall of the discharge pipe 3 and the side wall of the magnet block 7. The two settings limit the helical gear ring 14 to prevent it from moving longitudinally, ensuring its normal rotation. The scraper 5 cleans the inner wall of the discharge pipe 3 and the side wall of the magnet block 7. Afterwards, the controller stops the motor 12. Due to the internal settings of the controller, the scraper 5 stops exactly in its original position when the motor 12 stops working. The magnet 7 holds the scraper 5 in place. Then, the controller is operated to gradually retract the output end of the electric push rod 6. The output end of the electric push rod 6 drives the magnet 7 to move. The magnet 7 drives the scraper 5 to move and gradually slide into the chute 4. This reduces the space occupied by the scraper 5 in the discharge pipe 3, while also reducing the amount of concrete adhering to the scraper 5 and occupying the discharge pipe 3's output space. This indirectly increases the output space of the discharge pipe 3, thereby increasing the amount of concrete output per unit time and reducing the working time.

[0032] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A concrete mixing plant, comprising a mixing plant, characterized in that: The output end of the mixing station is fixedly connected to an annular barrel. An annular cavity is formed on the bottom surface of the annular barrel. A discharge pipe is fixedly connected to the bottom end of the annular barrel. A groove is formed on the inner wall of the discharge pipe, and a scraper is slidably mounted within the groove. An annular groove is formed on the top surface of the discharge pipe, and a C-shaped rod is rotatably mounted within the groove. Sealing strips are fixedly embedded on both the top and bottom surfaces of the C-shaped rod. The top surface of the sealing strip is in contact with the bottom surface of the annular barrel, and the bottom surface of the sealing strip is in contact with the top surface of the discharge pipe. The top of the rod passes between the two ends of the C-shaped rod and into the cavity of the annular barrel, and is fixedly connected to the drive mechanism. The drive mechanism is fixedly connected to the annular barrel and can drive the scraper to rotate against the inner wall of the discharge pipe. The scraper is slidably connected to the C-shaped rod. A magnet block that is magnetically connected to the scraper is slidably attached to the groove. An electric push rod is fixedly connected between one side wall of the magnet block and the annular barrel. A sealing strip is fixedly embedded in the side wall of the magnet block and is attached to the surface of the discharge pipe.

2. The concrete mixing plant according to claim 1, characterized in that: The longitudinal cross-sectional shape of the scraper is a Z-shape rotated 180° clockwise. The vertical rod at the bottom of the scraper near the center of the discharge pipe has an arc surface, and its arc surface is on the same arc surface as the inner arc surface of the discharge pipe.

3. The concrete mixing plant according to claim 2, characterized in that: The vertical wall at the bottom of the scraper gradually decreases in size along the direction closer to the output end of the discharge pipe.

4. The concrete mixing plant according to claim 2 or 3, characterized in that: The minimum distance between the two ends of the C-shaped rod is equal to the width of the crossbar of the scraper.

5. The concrete mixing plant according to claim 4, characterized in that: The side wall of the magnet block near the bottom vertical rod of the C-shaped rod has an arc-shaped cross-section.

6. The concrete mixing plant according to claim 3, characterized in that: The driving mechanism includes a motor fixedly connected to the side wall of the annular barrel cavity. A helical gear is fixedly connected to the output end of the motor. A helical gear ring fitted on the bottom end of the helical gear is engaged with the helical gear ring. Limiting rings are fitted on both the bottom and top surfaces of the helical gear ring. The limiting rings are fitted on and fixedly connected to the annular barrel. A dovetail groove is opened on the bottom surface of the helical gear ring. The top vertical rod of the scraper rod passes through the dovetail groove and is slidably disposed in the dovetail groove. The cross-section of the top vertical rod of the scraper rod matches the dovetail groove.

Images