A screw metering feed system

Abstract

The utility model discloses a spiral metering feeding system belongs to the field of metering feeding, including a plurality of spiral metering feeding assembly, spiral metering feeding assembly includes: the shell with the blanking and the hollow part, the screw rod is rotatively connected in the shell through bearing assembly, and the screw rod is connected with positive helical blade and reverse helical blade, and positive helical blade and reverse helical blade are located on the both sides of blanking respectively, motor, the rotor of motor and screw rod are connected, wherein, the hollow part is located between reverse helical blade and bearing assembly. The utility model discloses technical effect lies in it not only prevents part material under the action of pressure backflow, also prevents the lubricating oil for bearing assembly from causing the pollution to material.

Description

Technical Field

[0001] This utility model relates to metering and feeding, and more particularly to a screw metering and feeding system. Background Technology

[0002] The screw metering and feeding system is an automated feeding system that combines screw conveying with dynamic metering functions. It is widely used in industrial production scenarios that require precise batching of raw materials, granules, powders or liquids.

[0003] During feeding, the screw metering and feeding system may cause some material to flow back under pressure, which can lead to screw jamming and damage to subsequent components such as bearings. In addition, the lubricating oil used in the bearings can also contaminate the material. Utility Model Content

[0004] Purpose of the utility model: The purpose of this utility model is to provide a screw metering and feeding system that not only helps prevent some materials from flowing back under pressure, but also helps prevent the lubricating oil used in bearing components from contaminating the materials.

[0005] Technical solution:

[0006] A spiral metering and feeding system includes several spiral metering and feeding components, wherein the spiral metering and feeding components include:

[0007] A housing with a feed port and a perforated section;

[0008] A screw is rotatably connected to the housing via a bearing assembly. The screw is externally connected to a positive spiral blade and a negative spiral blade, which are located on opposite sides of the feed inlet.

[0009] An electric motor, wherein the rotor of the electric motor is connected to the screw;

[0010] The hollowed-out portion is located between the anti-spiral blade and the bearing assembly.

[0011] Optional, also includes:

[0012] Controller;

[0013] The probe point connected to the screw;

[0014] The probe is set up corresponding to the probe point;

[0015] Both the motor and the probe are electrically connected to the controller.

[0016] Optionally, both the probe and the detection point are infrared in form.

[0017] Optionally, the screw metering and feeding assembly further includes a PTFE sleeve fitted over the screw, the PTFE sleeve being fitted inside the housing, and the hollow portion being located between the PTFE sleeve and the bearing assembly.

[0018] Optionally, the screw metering feed assembly further includes:

[0019] A limiting protrusion connected to the outside of the screw;

[0020] A limiting groove is provided in the PTFE sleeve, and the limiting groove and the limiting protrusion cooperate with each other.

[0021] Optionally, the hollowed-out portion includes a first hollowed-out body and a second hollowed-out body respectively disposed on both sides of the outer shell, wherein the first hollowed-out body and the second hollowed-out body are both located between the anti-helical blade and the bearing assembly.

[0022] Optionally, the first hollow body and the second hollow body are arranged symmetrically about the outer shell.

[0023] Optionally, the bearing assembly includes a deep groove ball bearing and a tapered roller bearing rotatably connected between the housing and the screw, with an oil cup communicating between the deep groove ball bearing and the tapered roller bearing, the oil cup being connected to the housing, wherein the hollow portion is located between the anti-helical blade and the deep groove ball bearing.

[0024] Beneficial effects:

[0025] (1) When working, the material is added into the shell through the feed port. At the same time, the motor is started. The motor rotor drives the screw, the positive spiral blade and the negative spiral blade to rotate in sequence. Since the positive spiral blade and the negative spiral blade are located on both sides of the feed port, the positive spiral blade is used to transport the material, and the negative spiral blade is used to prevent the material from flowing back, thereby preventing the screw from jamming and preventing damage to subsequent bearing components and other parts.

[0026] (2) The hollow part has at least two functions. Function 1: even if a small amount of material flows back, it will be discharged from the shell through the hollow part under the action of gravity, preventing damage to subsequent bearing components and other parts. Function 2: the lubricating oil used for bearing components is discharged from the shell through the hollow part, preventing contamination of the material.

[0027] (3) The probe is used to detect the probe point and the number of rotations of the screw. If the probe point is not detected within a preset time (e.g., 15 seconds), the signal is transmitted to the controller. The controller considers the spiral metering and feeding component to be operating abnormally. The controller controls several spiral metering and feeding components to stop operating, ensuring good synchronization of the operation of several spiral metering and feeding components, thereby ensuring the accuracy of the material conveying ratio of several spiral metering and feeding components. Attached Figure Description

[0028] Figure 1 This is one of the structural diagrams of the spiral metering and feeding assembly of Embodiment 1 of this utility model;

[0029] Figure 2 This is a second structural diagram of the spiral metering and feeding assembly of Embodiment 1 of this utility model;

[0030] Figure 3 for Figure 2 A partial view of A in the middle;

[0031] Figure 4 This is a structural diagram of a screw metering and feeding system according to Embodiment 1 of this utility model;

[0032] In the diagram: 1. Outer shell; 11. Feed port; 12. Hollowed-out section; 121. First hollowed-out body; 122. Second hollowed-out body; 2. Screw; 21. Positive spiral blade; 22. Negative spiral blade; 23. Limiting protrusion; 3. Motor; 4. Bearing assembly; 41. Deep groove ball bearing; 42. Tapered roller bearing; 51. Probe point; 52. Probe; 6. PTFE sleeve; 61. Limiting groove; 7. Oil cup; 100. Spiral metering and feeding assembly. Detailed Implementation

[0033] To make the technical solution of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the utility model. Furthermore, it should be noted that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings. The terms "first," "second," etc., used in this utility model are provided for the convenience of describing the technical solution of this utility model and have no specific limiting effect; they are all general terms and do not constitute a limitation on the technical solution of this utility model. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections 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 based on the specific circumstances. Multiple technical solutions in the same embodiment, as well as multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions that do not contradict or conflict, all of which are within the scope of protection claimed by this utility model.

[0035] Example 1

[0036] like Figures 1-4 This embodiment provides a spiral metering and feeding system, including several spiral metering and feeding components 100. Each spiral metering and feeding component 100 includes: a housing 1 having a discharge port 11 and a hollow portion 12; a screw 2 rotatably connected to the housing 1 via a bearing assembly 4, with a positive spiral blade 21 and a negative spiral blade 22 connected to the outside of the screw 2, the positive spiral blade 21 and the negative spiral blade 22 being located on both sides of the discharge port 11; and a motor 3, the rotor of which is connected to the screw 2; wherein the hollow portion 12 is located between the negative spiral blade 22 and the bearing assembly 4.

[0037] Specifically, during operation, the material is added into the outer casing 1 through the feed port 11. At the same time, the motor 3 is started. The rotor of the motor 3 drives the screw 2, the positive spiral blade 21, and the negative spiral blade 22 to rotate in sequence. Since the positive spiral blade 21 and the negative spiral blade 22 are located on both sides of the feed port 11, the positive spiral blade 21 is used to transport the material, and the negative spiral blade 22 is used to prevent the material from flowing back, thereby preventing the screw 2 from jamming and preventing damage to subsequent components such as the bearing assembly 4.

[0038] The hollow section 12 has at least two functions. First, even if a small amount of material flows back, it will be discharged from the outer shell 1 through the hollow section 12 under the action of gravity, preventing damage to subsequent components such as the bearing assembly 4. Second, the lubricating oil used in the bearing assembly 4 is discharged from the outer shell 1 through the hollow section 12, preventing contamination of the material. The material being conveyed is metered by controlling the rotation speed of the rotor of the motor 3. The motor 3 can be a servo type, a stepper type, etc. The number of spiral metering and feeding components 100 is not limited and can be three, four, etc.

[0039] Furthermore, such as Figure 3 It also includes: a controller; a probe 51 connected to the screw 2; and a probe 52 corresponding to the probe 51; wherein the motor 3 and the probe 52 are both electrically connected to the controller.

[0040] Specifically, probe 52 is used to detect the number of rotations of probe 51 and screw 2. If probe 51 is not detected for more than a preset time (e.g., 15 seconds), a signal is transmitted to the controller. The controller considers the spiral metering and feeding assembly 100 to be operating abnormally. The controller controls several spiral metering and feeding assemblies 100 to stop operating, ensuring good synchronization of operation of several spiral metering and feeding assemblies 100, thereby ensuring the accuracy of the material conveying ratio of several spiral metering and feeding assemblies 100.

[0041] Furthermore, such as Figure 3 Both probe 51 and probe 52 are infrared type.

[0042] Specifically, the infrared type facilitates fast response and high accuracy. The probe 51 can be an infrared transmitter, and the probe 52 can be an infrared receiver.

[0043] Furthermore, such as Figure 3 The screw metering and feeding assembly 100 also includes a PTFE sleeve 6 fitted outside the screw 2. The PTFE sleeve 6 is fitted inside the housing 1, and the hollow part 12 is located between the PTFE sleeve 6 and the bearing assembly 4.

[0044] Specifically, the PTFE sleeve 6 is used to support the screw 2 and reduce friction and wear between the screw 2 and the housing 1.

[0045] Furthermore, such as Figure 3 The screw metering and feeding assembly 100 also includes: a limiting protrusion 23 connected to the outside of the screw 2; and a limiting groove 61 provided on the PTFE sleeve 6, wherein the limiting groove 61 and the limiting protrusion 23 cooperate.

[0046] Specifically, the limiting protrusion 23 and the limiting groove 61 cooperate to facilitate the relative axial limiting of the screw 2 and the PTFE sleeve 6.

[0047] Furthermore, such as Figure 3 The hollowed-out portion 12 includes a first hollowed-out body 121 and a second hollowed-out body 122 respectively disposed on both sides of the outer shell 1. The first hollowed-out body 121 and the second hollowed-out body 122 are both located between the anti-spiral blade 22 and the bearing assembly 4.

[0048] Furthermore, such as Figure 3 The first hollow body 121 and the second hollow body 122 are arranged symmetrically about the outer shell 1.

[0049] Specifically, the axially symmetrical design facilitates good force symmetry in the outer shell 1, thereby improving the structural stability of the outer shell 1.

[0050] Furthermore, such as Figure 3 The bearing assembly 4 includes a deep groove ball bearing 41 and a tapered roller bearing 42 rotatably connected between the housing 1 and the screw 2. An oil cup 7 is connected between the deep groove ball bearing 41 and the tapered roller bearing 42. The oil cup 7 is connected to the housing 1. The hollow part 12 is located between the anti-spiral blade 22 and the deep groove ball bearing 41.

[0051] Specifically, both the deep groove ball bearing 41 and the tapered roller bearing 42 are used to support the screw 2 and reduce the friction and wear between the screw 2 and the housing 1; the oil cup 7 facilitates the addition of lubricating oil to the deep groove ball bearing 41 and the tapered roller bearing 42.

[0052] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A helical metering feed system characterized by, It includes several spiral metering and feeding assemblies (100), wherein the spiral metering and feeding assembly (100) includes: A housing (1) having a feeding port (11) and a hollowed-out portion (12); The screw (2) is rotatably connected to the housing (1) via the bearing assembly (4). The screw (2) is externally connected with a positive helical blade (21) and a negative helical blade (22). The positive helical blade (21) and the negative helical blade (22) are located on both sides of the feed port (11). Motor (3), the rotor of which is connected to the screw (2); The hollowed-out portion (12) is located between the anti-spiral blade (22) and the bearing assembly (4).

2. The screw metering and feeding system according to claim 1, characterized in that, Also includes: Controller; The probe point (51) is connected to the screw (2); A probe (52) is provided corresponding to the probe point (51); The motor (3) and the probe (52) are both electrically connected to the controller.

3. The screw metering and feeding system according to claim 2, characterized in that, Both the probe point (51) and the probe (52) are infrared in nature.

4. A screw metering and feeding system according to any one of claims 1-3, characterized in that, The spiral metering and feeding assembly (100) also includes a PTFE sleeve (6) fitted outside the screw (2), the PTFE sleeve (6) fitted inside the outer shell (1), and the hollow part (12) located between the PTFE sleeve (6) and the bearing assembly (4).

5. A screw metering and feeding system according to claim 4, characterized in that, The spiral metering and feeding assembly (100) also includes: A limiting protrusion (23) connected to the outside of the screw (2); A limiting groove (61) is provided in the PTFE sleeve (6), and the limiting groove (61) and the limiting protrusion (23) cooperate.

6. A screw metering and feeding system according to any one of claims 1-3, characterized in that, The hollowed-out portion (12) includes a first hollowed-out body (121) and a second hollowed-out body (122) respectively disposed on both sides of the outer shell (1). The first hollowed-out body (121) and the second hollowed-out body (122) are both located between the anti-spiral blade (22) and the bearing assembly (4).

7. A screw metering and feeding system according to claim 6, characterized in that, The first hollow body (121) and the second hollow body (122) are arranged symmetrically about the outer shell (1).

8. A screw metering and feeding system according to any one of claims 1-3, characterized in that, The bearing assembly (4) includes a deep groove ball bearing (41) and a tapered roller bearing (42) rotatably connected between the housing (1) and the screw (2). An oil cup (7) is connected between the deep groove ball bearing (41) and the tapered roller bearing (42). The oil cup (7) is connected to the housing (1). The hollow part (12) is located between the anti-helical blade (22) and the deep groove ball bearing (41).

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