Screw machine feed port impurity removal device

Abstract

The utility model discloses a kind of screw machine feed inlet impurity removal devices, it is related to screw machine technical field, main purpose is to feed continuously in the feed inlet of screw machine, iron impurities in raw material are promptly rejected simultaneously.The main technical scheme of the utility model is as follows: screw machine feed inlet impurity removal device, including: the lower end of downcomer is connected to the feed inlet of screw machine, downcomer tube wall is arranged with the impurity removal port and the through hole in axial direction, impurity removal port is located above the through hole, the downcomer tube wall between impurity removal port and through hole is magnetic plate;First transmission wheel and second transmission wheel rotation are arranged on the outside of downcomer, first transmission wheel is located at the lower edge of impurity removal port, second transmission wheel corresponds to through hole, transmission belt is tensioned between first transmission wheel and second transmission wheel, transmission belt respectively passes through impurity removal port and through hole;The upper end of protective cover is connected to the upper edge of impurity removal port, the lower end of protective cover is connected to the downcomer tube wall below through hole.

Description

Technical Field

[0001] This utility model relates to the field of screw compressor technology, and in particular to a screw compressor feed inlet impurity removal device. Background Technology

[0002] In plastic steel product manufacturers, screw extruders are commonly used production equipment. When raw materials are fed into the screw extruder, the presence of impurities can have a significant impact on the screw extruder and filter. If large iron impurities, such as large screws, enter the screw extruder, they can even jam the screw extruder and seriously affect the continuous operation of production.

[0003] Although many companies install magnet racks before the raw materials are fed to the screw to remove iron impurities, if the installation location is not ideal or the shape and structure of the device are not ideal, the iron impurities cannot be removed from the path of the falling raw materials in time, and there is still a probability that iron impurities will fall into the screw. Utility Model Content

[0004] In view of this, the present invention provides a screw compressor feed inlet impurity removal device, the main purpose of which is to remove iron impurities from the raw material in a timely manner while the screw compressor feed inlet is continuously feeding.

[0005] To achieve the above objectives, this utility model mainly provides the following technical solutions:

[0006] This utility model provides a screw compressor feed inlet impurity removal device, which includes: a feed pipe, an impurity removal mechanism, and a protective cover;

[0007] The lower end of the feed pipe is connected to the feed inlet of the screw compressor. The feed pipe wall has a discharge port and a through port arranged axially. The discharge port is located above the through port. The feed pipe wall between the discharge port and the through port is a magnetic plate.

[0008] The impurity removal mechanism includes a transmission belt, a first transmission wheel, and a second transmission wheel. The first and second transmission wheels are rotatably disposed on the outside of the feed tube. The first transmission wheel is located at the lower edge of the impurity removal port, and the second transmission wheel corresponds to the through port. The transmission belt is tensioned between the first and second transmission wheels and passes through the impurity removal port and the through port, respectively, so that the portion of the transmission belt inside the feed tube is in contact with the inner surface of the magnetic plate.

[0009] The upper end of the protective cover is connected to the upper edge of the discharge port, and the lower end of the protective cover is connected to the wall of the feed pipe below the through-hole, so as to form a receiving space on the outside of the feed pipe.

[0010] The purpose of this utility model and the technical problems to be solved can be further achieved by the following technical measures.

[0011] Optionally, within the receiving space, the wall of the discharge pipe below the through-hole is provided with a material leakage hole.

[0012] Optionally, it also includes a first cover plate, wherein the protective cover has a first opening for taking out and putting in, and the first cover plate covers the first opening for taking out and putting in.

[0013] Optionally, a sieve plate is also included, which is disposed inside the feed pipe below the through-hole.

[0014] Optionally, a second cover plate is also included, wherein the wall of the feed pipe above the screen plate is provided with a second pick-up and drop-off port, and the second cover plate covers the second pick-up and drop-off port.

[0015] Optionally, it also includes an elastic sealing strip, one end of which is fixedly connected to the inner side of the lower edge of the through opening, and the other end is overlapped with the transmission belt.

[0016] Optionally, the diameter of the second drive wheel is larger than the diameter of the first drive wheel.

[0017] Optionally, the second transmission wheel is coaxially connected to the drive motor.

[0018] By employing the above technical solution, this utility model has at least the following advantages:

[0019] During the operation of the screw compressor, the first and second drive wheels drive the drive belt, which moves upward relative to the magnetic plate. The raw material falls into the screw compressor along the feed pipe. Iron impurities in the raw material are attracted by the magnetic plate, stick to the drive belt, and move upward with the drive belt to the impurity discharge port. The iron impurities cross the impurity discharge port and enter the receiving space, thus removing the iron impurities from the raw material in a timely manner. This prevents iron impurities from entering the screw compressor with the raw material and avoids scratching the internal structural cups of the screw compressor by iron impurities. Attached Figure Description

[0020] Figure 1 A schematic diagram of a screw compressor feed inlet impurity removal device provided in an embodiment of this utility model;

[0021] Figure 2 for Figure 1 Enlarged view of section A;

[0022] Figure 3 for Figure 2 Enlarged view of section B;

[0023] Figure 4 for Figure 3 Enlarged view of section C;

[0024] Figure 5 This is a three-dimensional structural diagram of the feed tube.

[0025] The reference numerals in the accompanying drawings include: 1. Feed pipe; 2. Screw compressor; 3. Waste discharge port; 4. Through port; 5. Drive belt; 6. First drive wheel; 7. Second drive wheel; 8. Magnetic plate; 9. Protective cover; 10. Hopper; 11. Screw conveyor mechanism; 12. Leakage hole; 13. First cover plate; 14. First pick-up and drop-off port; 15. Screen plate; 16. Second cover plate; 17. Second pick-up and drop-off port; 18. Elastic sealing strip. Detailed Implementation

[0026] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the specific implementation methods, structures, features, and effects according to this utility model application are described in detail below with reference to the accompanying drawings and preferred embodiments. In the following description, different "embodiments" or "embodiments" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0028] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a screw compressor feed inlet impurity removal device, which includes: a feed pipe 1, an impurity removal mechanism and a protective cover 9;

[0029] The lower end of the feed pipe 1 is connected to the feed inlet of the screw compressor 2. The feed pipe 1 has a discharge port 3 and a through port 4 arranged axially on its wall. The discharge port 3 is located above the through port 4. The wall of the feed pipe 1 between the discharge port 3 and the through port 4 is a magnetic plate 8.

[0030] The impurity removal mechanism includes a transmission belt 5, a first transmission wheel 6, and a second transmission wheel 7. The first transmission wheel 6 and the second transmission wheel 7 are rotatably disposed on the outside of the feed tube 1. The first transmission wheel 6 is located at the lower edge of the impurity removal port 3, and the second transmission wheel 7 corresponds to the through port 4. The transmission belt 5 is tensioned between the first transmission wheel 6 and the second transmission wheel 7. The transmission belt 5 passes through the impurity removal port 3 and the through port 4 respectively, so that the portion of the transmission belt 5 inside the feed tube 1 is in contact with the inner surface of the magnetic plate 8.

[0031] The upper end of the protective cover 9 is connected to the upper edge of the discharge port 3, and the lower end of the protective cover 9 is connected to the wall of the feed pipe 1 below the through port 4, so as to form a receiving space on the outside of the feed pipe 1.

[0032] The working process of a screw compressor feed inlet impurity removal device is as follows:

[0033] During the operation of the screw compressor 2, the first drive wheel 6 and the second drive wheel 7 drive the drive belt 5. The drive belt 5 drives upward relative to the magnetic plate 8. The raw material falls into the screw compressor 2 along the feed pipe 1. The iron impurities in the raw material are attracted by the magnetic plate 8. The iron impurities stick to the drive belt 5 and move upward with the drive belt 5 to the impurity discharge port 3. The iron impurities cross the impurity discharge port 3 and enter the receiving space, thereby removing the iron impurities from the raw material in time, preventing the iron impurities from entering the screw compressor 2 with the raw material, and preventing the iron impurities from scratching the internal structure cup of the screw compressor 2.

[0034] Specifically, the first drive wheel 6 is a magnetic wheel, and the second drive wheel 7 is a non-magnetic wheel. Iron impurities move from the surface of the magnetic plate 8 to the surface of the first drive wheel 6 along the drive belt 5. The attraction force on the iron impurities will not weaken, and the iron impurities can continue to stick to the drive belt 5, so that the iron impurities can pass smoothly through the impurity discharge port 3.

[0035] like Figure 5 As shown, specifically, the feed pipe 1 has an axially straight pipe wall, and the discharge port 3 and the through port 4 are arranged axially in sequence on the straight pipe wall; the axle of the first drive wheel 6 is rotatably connected to the upper opposite side wall of the protective cover 9, and the axle of the second drive wheel 7 is rotatably connected to the lower opposite side wall of the protective cover 9.

[0036] Specifically, in actual operation, it also includes a hopper 10 and a screw conveyor mechanism 11. The lower end of the hopper 10 is connected to the inlet of the screw conveyor mechanism 11, and the outlet of the screw conveyor mechanism 11 is connected to the upper end of the discharge pipe 1.

[0037] Specifically, the width of the transmission belt 5 is greater than the width of the magnetic plate 8. The transmission belt 5 is made of belt material. Except for the magnetic plate 8, the part of the feeding tube 1 is made of PET plastic (when the PET material feeding tube 1 is processed and formed, the magnetic plate 8 is embedded in the PET material tube wall). The PET material tube wall has a certain mechanical strength and is not magnetic. During the process of the raw material falling, it ensures that iron impurities are adsorbed to the surface of the transmission belt 5.

[0038] like Figure 2 As shown in the specific embodiment, within the receiving space, the wall of the feed pipe 1 below the through-hole 4 is provided with a material leakage hole 12.

[0039] In this embodiment, specifically, the diameter of the discharge hole 12 is larger than the diameter of the polymer raw material particles and smaller than the diameter of the iron impurities. While the iron impurities pass through the discharge port 3, a small number of raw material particles inevitably pass through the discharge port 3. However, the raw material particles in the receiving space can still flow back to the feed pipe 1 through the discharge hole 12, but the iron impurities are intercepted in the receiving space.

[0040] Specifically, the material leakage hole 12 is a vertical elongated hole, the width of which is greater than the diameter of the polymer raw material particles and smaller than the diameter of the iron impurities.

[0041] like Figure 2 As shown, in a specific embodiment, it also includes a first cover plate 13, and the protective cover 9 is provided with a first take-up opening 14, and the first cover plate 13 covers the first take-up opening 14.

[0042] In this embodiment, specifically, one side of the first cover plate 13 is hinged to one side edge of the first take-up and take-down opening 14, and the other side of the first cover plate 13 is connected to the other side edge of the first take-up and take-down opening 14 through a snap-fit ​​mechanism.

[0043] After the material has been fed through the feed pipe 1 for a long time, the operator can open the first cover plate 13 and check whether there are iron impurities in the receiving space through the first take-out port 14, and then take them out.

[0044] like Figure 2 As shown, in a specific embodiment, a sieve plate 15 is also included, which is disposed in the feed pipe 1 below the through-hole 4.

[0045] In this embodiment, specifically, the diameter of the sieve hole of the sieve plate 15 is larger than the diameter of the raw material particles and smaller than the diameter of the iron impurities. In actual operation, some iron impurities may escape the attraction of the magnetic plate 8 and cannot move upward with the transmission belt 5 to the discharge port 3 immediately. However, these iron impurities will inevitably be intercepted by the sieve plate 15, while the raw material particles can pass through the sieve hole of the sieve plate 15.

[0046] Specifically, the lower edges of the sieve plate 15 and the through-hole 4 are at the same height, so that the iron impurities on the sieve plate 15 can no longer move downwards. As a result, the iron impurities are eventually attracted by the magnetic plate 8, adhere to the transmission belt 5, and move upwards with the transmission belt 5 to the discharge port 3, ensuring that the iron impurities are completely separated from the raw material particles.

[0047] like Figure 2 As shown, in a specific embodiment, a second cover plate 16 is also included. The wall of the feed pipe 1 above the screen plate 15 is provided with a second take-out port 17, and the second cover plate 16 covers the second take-out port 17.

[0048] In this embodiment, specifically, the second loading / unloading port 17 and the protective cover 9 are located on opposite radial sides of the feeding pipe 1;

[0049] After the material has been discharged from the feed pipe 1 for a long time, the operator can open the second cover plate 16, check the internal condition of the feed pipe 1 through the second loading and unloading port 17, and clean the upper surface of the screen plate 15.

[0050] Specifically, one side of the second cover plate 16 is hinged to one side edge of the second access port 17, and the other side of the second cover plate 16 is connected to the other side edge of the second access port 17 through a snap-fit ​​mechanism.

[0051] like Figure 4 As shown, in a specific embodiment, it also includes an elastic sealing strip 18, one end of which is fixedly connected to the inner side of the lower edge of the through-hole 4, and the other end is attached to the transmission belt 5.

[0052] In this embodiment, one end of the elastic sealing strip 18 is fixedly connected to the inner side of the lower edge of the through-hole 4 by a rivet, and the other end of the elastic sealing strip 18 overlaps the part of the transmission belt 5 located inside the feed tube 1, thereby covering the gap between the transmission belt 5 and the lower edge of the through-hole 4, and preventing the raw material particles in the feed tube 1 from passing through the gap.

[0053] Specifically, the elastic sealing strip 18 is made of rubber.

[0054] like Figure 2 and Figure 3 As shown, in a specific embodiment, the diameter of the second transmission wheel 7 is larger than the diameter of the first transmission wheel 6.

[0055] In this embodiment, specifically, the diameter of the second drive wheel 7 is larger than the diameter of the first drive wheel 6, causing the drive belt 5 in the receiving space to tilt downwards.

[0056] As the iron impurities that pass through the discharge port 3 fall along the conveyor belt 5 in the receiving space, they gradually move away from the magnetic plate 8, and the attraction they receive gradually weakens, thus facilitating their rapid deposition at the bottom of the receiving space.

[0057] In a specific embodiment, the second transmission wheel 7 is coaxially connected to the drive motor.

[0058] In this embodiment, specifically, under the drive of the drive motor, the second transmission wheel 7 acts as the driving wheel and the first transmission wheel 6 acts as the driven wheel, driving the transmission belt 5.

[0059] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A screw compressor feed inlet impurity removal device, characterized in that, include: The feed tube has its lower end connected to the feed inlet of the screw compressor. The feed tube wall has a discharge port and a through port arranged axially. The discharge port is located above the through port. The feed tube wall between the discharge port and the through port is a magnetic plate. The impurity removal mechanism includes a transmission belt, a first transmission wheel, and a second transmission wheel. The first and second transmission wheels are rotatably disposed on the outside of the feed tube. The first transmission wheel is located at the lower edge of the impurity removal port, and the second transmission wheel corresponds to the through port. The transmission belt is tensioned between the first and second transmission wheels and passes through the impurity removal port and the through port, respectively, so that the portion of the transmission belt inside the feed tube is attached to the inner surface of the magnetic plate. A protective cover, the upper end of which is connected to the upper edge of the discharge port, and the lower end of which is connected to the wall of the feed pipe below the through-hole, for forming a receiving space on the outside of the feed pipe.

2. The screw compressor feed inlet impurity removal device according to claim 1, characterized in that, Within the receiving space, the wall of the feed pipe below the through-hole is provided with a material leakage hole.

3. The screw compressor feed inlet impurity removal device according to claim 1, characterized in that, It also includes a first cover plate, and the protective cover has a first opening for taking out and putting in, and the first cover plate covers the first opening for taking out and putting in.

4. The screw compressor feed inlet impurity removal device according to claim 1, characterized in that, It also includes a sieve plate, which is disposed inside the feed pipe below the through-hole.

5. The screw compressor feed inlet impurity removal device according to claim 4, characterized in that, It also includes a second cover plate, and the wall of the feed pipe above the screen plate is provided with a second pick-up and drop-off port, and the second cover plate covers the second pick-up and drop-off port.

6. The screw compressor feed inlet impurity removal device according to any one of claims 1 to 5, characterized in that, It also includes an elastic sealing strip, one end of which is fixedly connected to the inner side of the lower edge of the through opening, and the other end is attached to the transmission belt.

7. The screw compressor feed inlet impurity removal device according to any one of claims 1 to 5, characterized in that, The diameter of the second drive wheel is larger than the diameter of the first drive wheel.

8. The screw compressor feed inlet impurity removal device according to claim 7, characterized in that, The second transmission wheel is coaxially connected to the drive motor.

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