Screw feeder capable of preventing material backflow

Abstract

The utility model discloses a spiral feeder for preventing material backflow, which relates to the field of spiral feeders, and comprises a feeding cylinder and an electric push rod, the bottom of the feeding cylinder is fixedly provided with a discharge port, and the top of the feeding cylinder is fixedly connected with a feed port. According to the spiral feeder capable of preventing the materials from flowing back, an arc-shaped sliding block is arranged, so that an electric push rod can drive a first bearing assembly and a connecting assembly to move front and back along the inner surface of a feeding barrel during operation, and when a second bearing assembly moves to a feeding opening, the feeding opening is automatically blocked; in this way, it is ensured that when the spiral feeder stops feeding, materials to be conveyed cannot enter the feeding barrel through the feeding port, and meanwhile it is effectively ensured that the materials cannot flow back from the feeding port. Therefore, the situation that when the spiral feeder stops conveying the wood particle materials, the materials flow back, and consequently abrasion and energy consumption increase are caused during follow-up operation of equipment is avoided.

Description

Technical Field

[0001] The utility model relates to the field of screw feeders, in particular to a screw feeder which prevents material from flowing back. Background Art

[0002] The screw feeder is a relatively common material conveying equipment, which is widely used in industrial production for uniform and continuous conveying of powdered, granular or small block materials. It transports the material from the feed port to the discharge port through the rotating motion of the spiral blade. It has the characteristics of simple structure, easy operation and good sealing. It is suitable for a variety of industries such as building materials, chemical industry, grain processing, etc.

[0003] However, the current screw feeder still has some shortcomings. For example, the existing screw feeder has poor anti-material backflow performance, which causes the material to easily flow back when the screw feeder stops conveying wood pellets, thereby easily increasing the wear and energy consumption of the equipment during subsequent operation, and thus there are certain usage defects.

[0004] Therefore, it is urgent to improve this shortcoming. The present invention is to study and improve the existing structural deficiencies and provide a screw feeder that prevents material backflow. Utility Model Content

[0005] The purpose of the utility model is to provide a screw feeder that prevents material backflow, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a screw feeder for preventing material backflow, comprising a feeding barrel and an electric push rod, the bottom of the feeding barrel is fixedly installed with a discharge port, and the top of the feeding barrel is fixedly connected with the feeding port, and the interior of the feeding barrel is movably connected with a first bearing assembly, the electric push rod is fixedly installed at the end of the feeding barrel, and the extended end of the electric push rod is fixedly connected with a connecting assembly, and the end of the connecting assembly is rotatably connected to a drive shaft, and the outer surface of the drive shaft is fixedly installed with a spiral conveying blade.

[0007] Furthermore, the first bearing assembly includes a bearing plate, an arc-shaped slider and a rubber sealing ring, and the outer surface of the bearing plate is annular with arc-shaped sliders fixedly installed at equal distances, and rubber sealing rings are symmetrically installed on the front and rear sides of the bearing plate.

[0008] Furthermore, the outer side of the supporting plate is fixedly connected to the inner side of the arc-shaped slider, and the outer surface of the arc-shaped slider is slidably connected to the inner surface of the feeding barrel, and the supporting plate forms a sliding structure with the feeding barrel through the arc-shaped slider.

[0009] Furthermore, the side of the supporting plate is fixedly connected to the inner side of the rubber sealing ring, and the supporting plate and the rubber sealing ring form a fixed structure, and the outer surface of the rubber sealing ring is fitted and connected to the inner surface of the feeding barrel.

[0010] Furthermore, the connecting assembly includes a connecting plate, a fixing rod, a second bearing assembly and a driving motor, and the fixing rods are installed in a circular shape and at equal distances on the inner side of the connecting plate, and the end of the fixing rod is fixedly connected to the second bearing assembly, and the driving motor is installed on the inner side of the second bearing assembly, and the output shaft of the driving motor is connected to the end of the driving shaft through a coupling.

[0011] Furthermore, the end of the fixing rod is fixedly connected to the inner side of the connecting plate, and the other end of the fixing rod is fixedly connected to the outer side of the second bearing assembly, and the second bearing assembly forms a fixed structure through the fixing rod and the connecting plate.

[0012] Furthermore, the second bearing assembly and the first bearing assembly are symmetrically arranged with the mid-perpendicular line of the drive shaft as the symmetry axis, and the two ends of the drive shaft are respectively connected to the internal rotation of the second bearing assembly and the first bearing assembly, and the structural composition of the second bearing assembly is the same as that of the first bearing assembly.

[0013] The utility model provides a screw feeder for preventing material backflow, which has the following beneficial effects:

[0014] 1. The utility model provides an arc-shaped slider, so that the electric push rod can drive the first bearing assembly and the connecting assembly to move back and forth along the inner surface of the feeding barrel during operation. When the second bearing assembly moves to the feeding port, the feeding port is automatically sealed to ensure that the material to be conveyed will not enter the interior of the feeding barrel through the feeding port when the screw feeder stops feeding. At the same time, it also effectively ensures that the material will not flow back from the feeding port, thereby avoiding the backflow of material when the screw feeder stops conveying wood particle material, causing wear and increased energy consumption during subsequent operation of the equipment. In addition, by increasing the roughness of the outer surface of the spiral conveying blade, the spiral conveying blade can also provide a certain anti-material backflow effect when conveying materials.

[0015] 2. The utility model provides a rubber sealing ring, so that when the first bearing assembly and the connecting assembly move along the inside of the feeding barrel, they can effectively ensure that the material in the feeding barrel will not pass through the bearing plate and the second bearing assembly into the non-conveying space, thereby providing convenience for the staff's subsequent equipment maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a rear sectional perspective structural diagram of a screw feeder for preventing material backflow according to the present invention;

[0017] Figure 2 This is a schematic diagram of the front three-dimensional structure of a screw feeder for preventing material backflow in the utility model;

[0018] Figure 3 The utility model is a schematic diagram of the three-dimensional structure of an electric push rod and a connecting plate of a screw feeder for preventing material backflow.

[0019] In the figure: 1. Feeding barrel; 2. Discharge port; 3. Feed port; 4. First bearing assembly; 41. Bearing plate; 42. Arc-shaped slider; 43. Rubber sealing ring; 5. Electric push rod; 6. Connecting assembly; 61. Connecting plate; 62. Fixing rod; 63. Second bearing assembly; 64. Drive motor; 7. Drive shaft; 8. Spiral conveying blade. DETAILED DESCRIPTION

[0020] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0021] like Figure 1-Figure 3 As shown, a screw feeder for preventing material backflow includes a feeding barrel 1 and an electric push rod 5, the bottom of the feeding barrel 1 is fixedly installed with a discharge port 2, and the top of the feeding barrel 1 is fixedly connected to the feeding port 3, and the inside of the feeding barrel 1 is movably connected to a first bearing component 4, the electric push rod 5 is fixedly installed at the end of the feeding barrel 1, and the extended end of the electric push rod 5 is fixedly connected to a connecting component 6, the connecting component 6 includes a connecting plate 61, a fixing rod 62, a second bearing component 63 and a driving motor 64, and the inner side of the connecting plate 61 is annularly and equidistantly installed with fixing rods 62, and the end of the fixing rod 62 is fixedly connected to the second bearing component 63, the end of the fixing rod 62 is fixedly connected to the inner side of the connecting plate 61, and the other end of the fixing rod 62 is fixedly connected to the outer side of the second bearing component 63, and the second bearing component 63 is fixedly connected to the outer side of the second bearing component 63. The fixed rod 62 and the connecting plate 61 form a fixed structure. By setting the second bearing assembly 63 and the connecting plate 61 as a fixed structure, the connecting plate 61 is more stable when driving the second bearing assembly 63 to move along the inside of the feeding barrel 1, and a driving motor 64 is installed on the inner side of the second bearing assembly 63. The second bearing assembly 63 and the first bearing assembly 4 are symmetrically arranged with the mid-vertical line of the driving shaft 7 as the symmetry axis, and the two ends of the driving shaft 7 are respectively connected to the internal rotation of the second bearing assembly 63 and the first bearing assembly 4, and the structural composition of the second bearing assembly 63 is the same as that of the first bearing assembly 4. At the same time, the output shaft of the driving motor 64 is connected to the end of the driving shaft 7 through a coupling, and the end of the connecting assembly 6 is rotatably connected to the driving shaft 7, and the outer surface of the driving shaft 7 is fixedly installed with a spiral conveying blade 8.

[0022] like Figure 2and Figure 3 As shown, the bottom of the feeding barrel 1 is fixedly installed with a discharge port 2, and the top of the feeding barrel 1 is fixedly connected with a feed port 3, and the inside of the feeding barrel 1 is movably connected with a first bearing assembly 4, the first bearing assembly 4 includes a bearing plate 41, an arc-shaped slider 42 and a rubber sealing ring 43, and the outer surface of the bearing plate 41 is annular and fixedly installed with an arc-shaped slider 42 at equal distances, the outer side of the bearing plate 41 is fixedly connected to the inner side of the arc-shaped slider 42, and the outer surface of the arc-shaped slider 42 is slidably connected to the inner surface of the feeding barrel 1, and the bearing plate 41 forms a sliding structure with the feeding barrel 1 through the arc-shaped slider 42. By configuring the bearing plate 41 and the feeding barrel 1 into a sliding structure, the bearing plate 41 can move more smoothly and stably along the inner surface of the feeding barrel 1. The supporting plate 41 is fixed, and rubber sealing rings 43 are symmetrically installed on the front and rear sides of the supporting plate 41. The sides of the supporting plate 41 are fixedly connected to the inner sides of the rubber sealing ring 43, and the supporting plate 41 and the rubber sealing ring 43 constitute a fixed structure, and the outer surface of the rubber sealing ring 43 is fit-connected to the inner surface of the feeding barrel 1. By setting the supporting plate 41 and the rubber sealing ring 43 as a fixed structure, the supporting plate 41 can move the rubber sealing ring 43 along the inner surface of the feeding barrel 1 more smoothly and stably, and the electric push rod 5 is fixedly installed on the end of the feeding barrel 1, and the extending end of the electric push rod 5 is fixedly connected to the connecting component 6, and the end of the connecting component 6 is rotatably connected to the drive shaft 7, and the outer surface of the drive shaft 7 is fixedly installed with a spiral conveying blade 8.

[0023] In summary, the screw feeder that prevents material backflow is first based on Figures 1 to 3 In the structure shown in the figure, the staff turns on the drive motor 64 through the controller. When the drive motor 64 starts running, it drives the drive shaft 7 to rotate inside the second bearing assembly 63 and the bearing plate 41, so that the drive shaft 7 drives the spiral conveying blade 8 to rotate inside the feeding barrel 1 to automatically convey the material. When the staff stops the material conveying work, the staff turns off the drive motor 64 and turns on the electric push rod 5 through the controller. When the electric push rod 5 starts running, it pushes the connecting plate 61 to move along the inside of the feeding barrel 1. At this time, through the connection of the fixed rod 62 and the sliding of the arc-shaped slider 42, the first bearing assembly 4 and the second bearing assembly 63 are moved synchronously along the inner surface of the feeding barrel 1, so as to achieve the purpose of quickly adjusting the position of the first bearing assembly 4 and the connecting assembly 6. When the second bearing assembly 63 moves to the discharge port 2, the electric push rod 5 is closed. At this time, the second bearing assembly 63 automatically seals the end of the discharge port 2 to ensure that the material in the feeding barrel 1 will not flow back into the storage bin from the discharge port 2, and also ensure that the material in the storage bin will not continue to enter the inside of the feeding barrel 1.

[0024] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A screw feeder for preventing material backflow, comprising a feeding barrel (1) and an electric push rod (5), characterized in that: The bottom of the feeding barrel (1) is fixedly mounted with a discharge port (2), the top of the feeding barrel (1) is fixedly connected with a feed port (3), and the interior of the feeding barrel (1) is movably connected with a first bearing assembly (4), the electric push rod (5) is fixedly mounted on the end of the feeding barrel (1), and the extended end of the electric push rod (5) is fixedly connected with a connecting assembly (6), and the end of the connecting assembly (6) is rotatably connected with a driving shaft (7), and a spiral conveying blade (8) is fixedly mounted on the outer surface of the driving shaft (7).

2. A screw feeder for preventing material backflow according to claim 1, characterized in that: The first bearing assembly (4) comprises a bearing plate (41), an arc-shaped slider (42) and a rubber sealing ring (43), and the outer surface of the bearing plate (41) is annular and fixed with the arc-shaped slider (42) at equal distances, and the rubber sealing ring (43) is symmetrically installed on the front and rear sides of the bearing plate (41).

3. A screw feeder for preventing material backflow according to claim 2, characterized in that: The outer side of the supporting plate (41) is fixedly connected to the inner side of the arc-shaped slider (42), and the outer surface of the arc-shaped slider (42) is slidably connected to the inner surface of the feeding barrel (1), and the supporting plate (41) and the feeding barrel (1) form a sliding structure through the arc-shaped slider (42).

4. A screw feeder for preventing material backflow according to claim 2, characterized in that: The side of the supporting plate (41) is fixedly connected to the inner side of the rubber sealing ring (43), and the supporting plate (41) and the rubber sealing ring (43) form a fixed structure, and the outer surface of the rubber sealing ring (43) is fitted and connected to the inner surface of the feeding barrel (1).

5. The screw feeder for preventing material backflow according to claim 2, characterized in that: The connecting assembly (6) comprises a connecting plate (61), a fixing rod (62), a second bearing assembly (63) and a driving motor (64), and the fixing rod (62) is installed in an annular shape at equal distances on the inner side of the connecting plate (61), and the end of the fixing rod (62) is fixedly connected to the second bearing assembly (63), and the driving motor (64) is installed on the inner side of the second bearing assembly (63), and the output shaft of the driving motor (64) is connected to the end of the driving shaft (7) through a coupling.

6. The screw feeder for preventing material backflow according to claim 5, characterized in that: The end of the fixing rod (62) is fixedly connected to the inner side of the connecting plate (61), and the other end of the fixing rod (62) is fixedly connected to the outer side of the second bearing assembly (63), and the second bearing assembly (63) forms a fixed structure with the connecting plate (61) through the fixing rod (62).

7. The screw feeder for preventing material backflow according to claim 5, characterized in that: The second bearing assembly (63) and the first bearing assembly (4) are symmetrically arranged with the mid-perpendicular line of the drive shaft (7) as the symmetry axis, and the two ends of the drive shaft (7) are respectively connected to the inside of the second bearing assembly (63) and the first bearing assembly (4) for rotation, and the structural composition of the second bearing assembly (63) is the same as that of the first bearing assembly (4).

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