Sealed feeding device of spiral powder metering scale
By installing a spiral sealing strip and a sealed outer shell on the spiral powder metering scale, the problem of powder leakage caused by wear between the reamer and the outer shell is solved, achieving higher metering accuracy and reducing maintenance costs.
Patent Information
- Application Number
- CN202520605584.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-04-01
AI Technical Summary
In cement production, the wear between the auger and the outer shell of the spiral powder metering scale can lead to powder leakage, affecting metering accuracy and increasing maintenance costs.
It adopts a spiral sealing strip and sealing shell structure. The spiral sealing strip and sealing shell make sealing contact to reduce powder leakage, and the detachable design facilitates maintenance.
It improves metering accuracy, reduces maintenance costs, and ensures uniform powder delivery.
Smart Images
Figure CN223879057U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to material conveying equipment technical field especially relates to a spiral powder metering scale sealed feed device. BACKGROUND
[0002] In the cement production process needs to mix a plurality of component materials, and the quality of the final product cement is directly affected by the proportion of each raw material, the component is generally stored in the powder bin, and the bin is generally connected with the gas conveying powder, and the powder is sent out of the powder bin by using the airflow. The powder is discharged quantitatively by the spiral powder metering scale, the spiral powder metering scale is driven by the motor to rotate and control the discharge speed of the powder, the feed inlet of the spiral powder metering scale is connected with the soft connection at the bottom of the powder bin, and the weighing sensor is installed on the base of the spiral powder metering scale. The data of the weighing sensor can control the rotating speed of the motor, and then the speed of the feed is controlled.
[0003] The reamer of the spiral powder metering scale needs to rotate freely, so there is a certain gap and tolerance between the edge of the reamer and the reamer shell. Some powders used in cement production have high hardness, and after a period of operation, the edge of the reamer and the inner wall of the shell will be greatly worn, resulting in a larger gap between the edge of the reamer and the shell. Since the powder is conveyed by airflow, it has a certain pressure, so when the wear is large, the powder will flow out from the gap between the edge of the reamer and the shell, resulting in that a part of the powder is not controlled by the rotating speed of the reamer, and then the measurement is inaccurate, which affects the proportioning between the components in the cement production and reduces the quality of the cement product. Moreover, the reamer structure is complex and cannot be simply repaired, so the price of the new reamer and the reamer shell is relatively high after wear, resulting in the increase of production and maintenance cost. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a spiral powder metering scale sealing feed device to solve the problems in the prior art.
[0005] The utility model discloses a spiral powder metering scale sealing feed device, including first reamer shell, second reamer shell, sealing shell, reamer, spiral seal strip and feed motor, the feed inlet is established on the first reamer shell, the discharge port is established on the second reamer shell, the sealing shell is coaxially connected between the first reamer shell and the second reamer shell, the reamer is arranged in the first reamer shell, the second reamer shell and the sealing shell, the shaft of the reamer is transmissionally connected with the feed motor, the spiral seal strip is fixedly installed on the blade of the reamer in the sealing shell, and the outer edge of the spiral seal strip is in sealing contact with the inner wall of the sealing shell.
[0006] Further, the sealing shell has an inner diameter larger than that of the first and second reamer shells, and the end of the sealing shell connected with the second reamer shell is in a flared shape and is provided with a conical groove.
[0007] Further, the sealing shell is provided with flanges at both ends, and the end of the sealing shell abutting the first and second reamer shells is provided with flanges, and the sealing shell is fixedly connected with the first and second reamer shells through the flanges.
[0008] Further, the spiral reinforcing strip is provided with a fixing hole corresponding to the through hole, and the fixing bolt sequentially passes through the spiral reinforcing strip, the spiral sealing strip and the spiral blade of the reamer to fixedly connect the three.
[0009] Further, the spiral reinforcing strip is provided with a fixing hole corresponding to the through hole, and the fixing bolt sequentially passes through the spiral reinforcing strip, the spiral sealing strip and the spiral blade of the reamer to fixedly connect the three.
[0010] The reamer has the advantages that: the spiral sealing strip and the sealing shell are arranged on the reamer, so that the overall sealing performance is improved, the soft spiral sealing strip and the sealing shell have good sealing effect, the leakage of powder between the spiral sealing strip and the sealing shell is reduced, all the materials are conveyed by the reamer, the material running problem is not prone to occur, and the metering is more accurate; meanwhile, the sealing shell and the spiral sealing strip are detachable structures, so that the reamer is convenient to overhaul and maintain, and the use cost is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 It is a whole structure schematic view of the reamer.
[0012] Figure 2 It is a local sectional view of the sealing shell.
[0013] In the drawing: 1, first reamer shell; 2, second reamer shell; 3, sealing shell; 4, reamer; 5, spiral sealing strip; 6, feeding motor; 101, feeding port; 201, discharging port; 301, conical groove; 401, notched groove; 402, through hole; 403, fixing bolt; 501, half groove; 502, spiral reinforcing strip; 503, fixing hole. DETAILED DESCRIPTION
[0014] With reference to the drawings and embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.
[0015] As shown in Figure 1 , Figure 2 : a spiral powder metering and sealing feeding device, comprising a first reamer shell 1, a second reamer shell 2, a sealing shell 3, a reamer 4, a spiral sealing strip 5 and a feeding motor 6, a feeding port 101 is arranged on the first reamer shell 1, a discharging port 201 is arranged on the second reamer shell 2, the sealing shell 3 is coaxially connected between the first reamer shell 1 and the second reamer shell 2, the reamer 4 is arranged in the first reamer shell 1, the second reamer shell 2 and the sealing shell 3, the shaft of the reamer 4 is in transmission connection with the feeding motor 6, the powder falls into the feeding port 101 after being discharged from a powder bin, the powder is pushed by the rotating reamer 4 and moves from the first reamer shell 1, the sealing shell 3 and the second reamer shell 2 to the discharging port 201 in turn, the spiral sealing strip 5 is fixedly arranged on the blade of the reamer 4 in the sealing shell 3, the spiral sealing strip 5 can be made of wear-resistant rubber or silica gel material, the outer edge of the spiral sealing strip 5 is in sealing contact with the inner wall of the sealing shell 3, the inner diameter of the sealing shell 3 is greater than the inner diameters of the first reamer shell 1 and the second reamer shell 2, in order to better contact the spiral sealing strip 5 with the inner wall of the sealing shell 3, an interference fit is needed between the spiral sealing strip 5 and the sealing shell 3, the end of the sealing shell 3 connected with the second reamer shell 2 is in the shape of a flared cone and is provided with a conical groove 301, the spiral sealing strip 5 arranged in the sealing shell 3 is smoothly connected with the inner wall, and then the material can be sent out of the sealing shell 3 along the conical groove 301, and the material accumulation area does not occur, flanges are arranged at both ends of the sealing shell 3, flanges are arranged at the end portions of the sealing shell 3 abutting with the first reamer shell 1 and the second reamer shell 2, the sealing shell 3 is fixedly connected with the first reamer shell 1 and the second reamer shell 2 through the flanges, when the spiral sealing strip 5 is worn after being used for a period of time, the sealing shell 3 can be disassembled by removing the bolts connecting the flanges, and the spiral sealing strip 5 is convenient to replace.
[0016] The rabbet groove 401 is arranged on the spiral blade connected with the reamer 4 and the spiral sealing strip 5, the half groove part 501 is arranged on the inner edge of the spiral sealing strip 5 and is matched with the rabbet groove 401, a plurality of through holes 402 are arranged on the half groove part 501 of the spiral sealing strip 5 and the rabbet groove 401 of the spiral blade of the reamer 4 and pass through the two, the fixing bolt 403 is arranged in the through hole 402, the spiral reinforcing strip 502 is arranged on the back of the half groove part 501 of the spiral sealing strip 5, the fixing hole 503 corresponding to the position of the through hole 402 is arranged on the spiral reinforcing strip 502, the fixing bolt 403 is arranged in sequence through the spiral reinforcing strip 502, the spiral sealing strip 5 and the spiral blade of the reamer 4 and is connected with the three, the spiral sealing strip 5 is matched with the reamer 4 and is fixed, the spiral reinforcing strip 502 can disperse the stress of the through hole 402 part and prevent the damage of the fixing bolt 403 to the spiral sealing strip 5.
[0017] Working principle: the powder enters the first reamer shell 1 through the feeding port 101 and is mostly placed in the conveying area between the reamer 4 and the first reamer shell 1, the feeding motor 6 drives the reamer 4 to rotate according to the required feeding speed and then conveys the powder forward, but since the reamer 4 is made of metal material, in order to ensure that the reamer 4 can rotate freely, there is a large gap between the reamer 4 and the first reamer shell 1, and when the powder is conveyed under pressure in the bin, the airflow will leak out from the gap between the reamer 4 and the first reamer shell 1, but the spiral sealing strip 5 in the sealing shell 3 is in sealing contact with the inner wall of the sealing shell 3, and the airflow cannot pass through, so all the powder needs to be conveyed forward by the rotation of the reamer 4, thus the sealing effect is generated, and the accurate feeding of the spiral metering scale is realized by using the feeding device structure disclosed in the utility model, and the material leakage problem of the traditional spiral powder metering scale is solved.
[0018] In the description of the utility model, it is to be explained that, the terms "center", "upper", "lower", "front", "back", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicated orientation or position relation is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and is not indicated or implied that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore cannot be understood as the limitation of the utility model.
Claims
1. A screw powder metering seal feed device, characterized in that, The utility model provides a first reamer shell (1), second reamer shell (2), seal shell (3), reamer (4), spiral sealing strip (5) and feeding motor (6) are included, be equipped with feeding port (101) on first reamer shell (1), be equipped with discharge port (201) on second reamer shell (2), and the coaxial connection of seal shell (3) between first reamer shell (1) and second reamer shell (2), reamer (4) is worn in first reamer shell (1), second reamer shell (2) and seal shell (3), and the shaft of reamer (4) is transmission connection with feeding motor (6), and spiral sealing strip (5) is fixedly installed on the blade of reamer (4) in seal shell (3), and the outer edge of spiral sealing strip (5) is sealed contact with seal shell (3) inner wall.
2. A screw-type powder metering and sealing feeder according to claim 1, characterized in that, The inner diameter of the seal shell (3) is greater than the inner diameter of the first reamer shell (1) and the second reamer shell (2), and the end of the seal shell (3) connected with the second reamer shell (2) is inwardly flared and provided with a conical groove (301).
3. A screw-type powder metering and sealing feeder according to claim 2, characterized in that, The seal shell (3) is provided with flanges at both ends, and the end portions of the first reamer shell (1) and the second reamer shell (2) abutting the seal shell (3) are provided with flanges, and the seal shell (3) is fixedly connected with the first reamer shell (1) and the second reamer shell (2) through the flanges.
4. A screw-type powder metering and sealing feeder according to claim 3, characterized in that, A notched groove (401) is formed on the spiral blade of the reamer (4) connected with the spiral sealing strip (5), a half-groove portion (501) is formed on the inner edge of the spiral sealing strip (5) and matches the notched groove (401), a plurality of through holes (402) are formed on the half-groove portion (501) of the spiral sealing strip (5) and the notched groove (401) of the spiral blade of the reamer (4), and a fixing bolt (403) is arranged in the through hole (402).
5. A screw-type powder metering and sealing feeder according to claim 4, characterized in that, A spiral reinforcing strip (502) is arranged on the back of the half-groove portion (501) of the spiral sealing strip (5), a fixing hole (503) corresponding to the position of the through hole (402) is formed on the spiral reinforcing strip (502), and the fixing bolt (403) sequentially passes through the spiral reinforcing strip (502), the spiral sealing strip (5) and the spiral blade of the reamer (4) to fixedly connect them.