Powder discharging pipeline

Abstract

The utility model relates to the technical field of material screening, in particular to a powder discharging pipeline which comprises a discharging pipe and a screening pipe, a steering valve is arranged at the joint of the discharging pipe and the screening pipe, a metal detector is arranged at the position, located at the upper end of the steering valve, of the discharging pipe, and the metal detector and the steering valve are electrically connected with a controller. An automatic screening pipeline is further arranged at the lower end of the screening pipe and comprises a main pipe, a first branch pipe and a second branch pipe, the feeding end of the main pipe is communicated with the discharging end of the screening pipe, the first branch pipe is connected with the abnormal material bag, and the second branch pipe is communicated with the discharging end of the discharging pipe; the main pipe is provided with a magnetic separation device used for adsorbing mixed metal in powder, the tee joint is provided with a second steering valve, the main pipe is further provided with a second metal detector and an alarm, and the second metal detector and the alarm are both electrically connected with the controller. The screening device can solve the technical problems that an existing screening means is large in workload and low in working efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to material screening technical field, concretely is a powder material discharging pipeline. BACKGROUND

[0002] Plastic pipeline is formed by the method that powder raw material is extruded through screw extruder, wherein, the powder material is usually purchased from different manufacturers, so the quality of powder material is uneven, and part of powder raw material is mixed with metal impurities, if not screened, the metal impurities will damage the equipment after entering the back-end production line, and the metal impurities are difficult to melt completely, and will also affect the quality of the final product. In order to solve the above technical problems, the technical means adopted by our company at present is: setting metal detector and screening pipeline on the discharging pipeline, when the metal detector detects that the powder material is mixed with metal, the screening pipeline is opened, so that the material is discharged from the screening pipeline, otherwise, the material is discharged from the discharging pipeline and enters the back-end production; but the material discharged from the screening pipeline still needs to be screened manually by using magnet, thereby increasing the workload and work burden of manual work, and the work efficiency is low. SUMMARY

[0003] The utility model provides a kind of powder material discharging pipeline, can solve the technical problems of the workload of existing screening means, low work efficiency.

[0004] The present application provides the following technical solutions:

[0005] A kind of powder material discharging pipeline, including discharging pipe, screening pipe being arranged on discharging pipe, the connecting place of discharging pipe and screening pipe is provided with diverter valve, the upper end of discharging pipe located diverter valve is provided with metal detector, metal detector, diverter valve are electrically connected with controller;The lower end of screening pipe is also provided with automatic screening pipeline, and the automatic screening pipeline includes main pipe and first branch pipe and second branch pipe connected with main pipe by tee joint, the feeding end of main pipe is communicated with the discharging end of screening pipe, first branch pipe is connected with abnormal material bag, and second branch pipe is communicated with the discharging end of discharging pipe;Magnetic separation device for adsorbing mixed metal in powder is arranged on main pipe, second diverter valve is arranged on tee joint, and second diverter valve is used to open first branch pipe or second branch pipe, second metal detector and alarm are also arranged on main pipe, and second metal detector is located between magnetic separation device and tee joint, and second metal detector and alarm are electrically connected with controller.

[0006] Beneficial effects:

[0007] 1, by setting automatic screening pipeline at the lower end of screening pipe, and setting magnetic separation device on main pipe, metal impurities contained in powder in screening pipe can be automatically magnetically selected and adsorbed, so that the workload of manual screening is reduced.

[0008] 2. By installing a second metal detector on the main pipe and a second diverter valve on the tee, the second metal detector can further detect the powder after magnetic separation. When no metal impurities are detected, the powder is discharged from the second branch pipe. Since the second branch pipe is connected to the discharge end of the discharge pipe, the powder after magnetic separation is directly returned to the discharge pipe and enters the back-end production line. Compared with the original manual screening and then utilization, the transfer time is reduced and the work efficiency is improved.

[0009] 3. By setting an alarm, you can sound an alarm for abnormal situations. For example, when the second metal detector keeps detecting metal impurities in the powder, it means that there is a problem with the magnetic separation device. At this time, the controller controls the alarm to sound an alarm after receiving the signal from the second metal detector, thereby reminding the staff to conduct abnormal investigation and maintenance.

[0010] Furthermore, the main pipe includes a first section and a second section that are detachably connected. A threaded section is provided on the outer diameter of the first section. A connecting nut is passed through the connecting end of the second section. The connecting nut is threadedly connected to the first section. The magnetic separation device is provided on the inner wall of the second section of the main pipe.

[0011] Beneficial effect: The main pipe is divided into two sections and connected with nuts, which makes it easy to disassemble and assemble the magnetic separation device provided on the second section. For example, when the magnetic separation device has been used for a long time, it can be disassembled to clean the adsorbed metal impurities.

[0012] Furthermore, the magnetic separation device is a conical structure, a magnet sheet is provided on the inner wall of the conical structure, the bottom of the conical structure is open, and the conical portion is downwardly arranged.

[0013] Beneficial effect: The magnetic separation device is set as a conical structure, and magnet sheets are set on the inner wall. When the powder falls onto the conical structure, the powder can be centrally guided, which is beneficial to improve the magnetic attraction effect and reduce omissions.

[0014] Furthermore, the conical structure is composed of several elastic sheets, the edges of adjacent elastic sheets are naturally in contact, and under the gravity of the powder material, the edges of adjacent elastic sheets are separated to form gaps, and the magnet sheets are arranged on the inner and outer walls of the elastic sheets.

[0015] Beneficial effect: A conical structure is formed by using several elastic sheets. When the material gradually falls onto the elastic sheets, as the weight of the material increases, the elastic sheets are pressed open, which can reduce the problem of blockage caused by material accumulation. In addition, the material accumulates on the elastic sheets, which can fully magnetically separate the metal in the powder, reducing the amount of powder that needs to be repeatedly screened later.

[0016] Furthermore, an insertion rod is provided on the top edge of the conical structure, and a slot is provided on the inner wall of the second section of the main pipe, and the insertion rod is used to be inserted into the slot.

[0017] Further, the pipe diameter of the screening pipe is larger than that of the feeding pipe, and the screening pipe is arranged obliquely.

[0018] Beneficial effects: the pipe diameter of the screening pipe is larger than that of the feeding pipe, which can further reduce the problem of material blocking in the screening pipe; the screening pipe is arranged obliquely, and the material is fed by relying on its own gravity.

[0019] Further, the main pipe is arranged vertically, and the first branch pipe and the second branch pipe are arranged obliquely.

[0020] Beneficial effects: the main pipe is arranged vertically, when the material enters the main pipe from the screening pipe, the falling direction of the material changes from oblique to vertical, which can change the falling speed of the material and make the material fall more dispersedly, which is beneficial to the magnet piece to adsorb the metal impurities mixed in the powder material, and improves the magnetic separation effect. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structural schematic view of the powder material feeding pipe of the utility model;

[0022] Figure 2 It is a structural schematic view of the magnetic separation device of the utility model;

[0023] Figure 3 It is a sectional view of the main pipe. DETAILED DESCRIPTION

[0024] The following is further described in detail through specific embodiments:

[0025] The marks in the drawings of the specification include: a feeding pipe 1, a screening pipe 2, a first metal detector 11, a first reversing valve 12, a main pipe 3, a first section 301, a second section 302, a first branch pipe 31, an abnormal material bag 311, a second branch pipe 32, a second metal detector 41, a second reversing valve 42, a magnetic separation device 5, an elastic piece 51, a plug rod 52, a connecting nut 6, and a sealing ring 7.

[0026] Example 1

[0027] As Figure 1As shown, a powder feeding pipeline includes a feeding pipe 1, a screening pipe 2 communicated with the feeding pipe 1 through a tee, and a diversion valve arranged at the connection between the feeding pipe 1 and the screening pipe 2. In order to distinguish, the diversion valve is referred to as a first diversion valve 12 in the embodiment. Specifically, a two-position two-way reversing valve is used in the embodiment to close or open the feeding pipe 1 or the screening pipe 2. The feeding pipe 1 is provided with a metal detector at the upper end of the first diversion valve 12. In order to distinguish, the metal detector is referred to as a first metal detector 11 in the embodiment. The first metal detector 11 and the first diversion valve 12 are electrically connected with a controller. When the first metal detector 11 detects that the powder contains metal, a signal is sent to the controller, and the controller is used to control the first diversion valve 12 to open the screening pipe 2 and close the feeding pipe 1, so that the powder is fed from the screening pipe 2. Otherwise, the controller controls the first diversion valve 12 to close the screening pipe 2 and open the feeding pipe 1, so that the powder is normally fed along the feeding pipe 1.

[0028] The lower end of the screening pipe 2 is further provided with an automatic screening pipeline. The automatic screening pipeline includes a main pipe 3, a first branch pipe 31 and a second branch pipe 32 connected with the main pipe 3 through tees. The feeding end of the main pipe 3 is communicated with the feeding end of the screening pipe 2. The first branch pipe 31 is connected with an abnormal material bag 311. The second branch pipe 32 is communicated with the feeding end of the feeding pipe 1. Specifically, the pipe diameter of the screening pipe 2 is greater than that of the feeding pipe 1 in the embodiment. The screening pipe 2 is arranged obliquely. The main pipe 3 is arranged vertically. The first branch pipe 31 and the second branch pipe 32 are arranged obliquely, so that the powder is normally fed in each pipeline under the action of gravity.

[0029] A magnetic separation device 5 for adsorbing mixed metal in the powder is arranged on the main pipe 3. A second diversion valve 42 is arranged on the tee. The second diversion valve 42 is used to open the first branch pipe 31 or the second branch pipe 32. Specifically, the second diversion valve 42 also adopts a two-position two-way reversing valve. A second metal detector 41 and an alarm (not shown in the figure) are further arranged on the main pipe 3. The second metal detector 41 is located between the magnetic separation device 5 and the tee. The second metal detector 41 and the alarm are electrically connected with the controller. The powder fed from the screening pipe 2 to the main pipe 3 after the first screening is adsorbed by the magnetic separation device 5 to remove metal impurities. The second metal detector 41 further detects the powder after the magnetic separation. When no metal impurities are detected, the powder is fed from the second branch pipe 32. Since the second branch pipe 32 is communicated with the feeding end of the feeding pipe 1, the powder after the magnetic separation is directly returned to the feeding pipe 1 to enter the rear-end production line, so that the transfer time is reduced and the work efficiency is improved.

[0030] When the second metal detector 41 detects metal impurities, a signal is sent to the controller, the controller controls the second diverter valve 42 to act, the second diverter valve 42 closes the second branch pipe 32 and opens the first branch pipe 31, and the powder enters the abnormal bag 311 from the first branch pipe 31, waiting for further screening; When the second metal detector 41 continuously detects metal for a period of time, for example, 10s or 20s, the controller receives the continuous signal and controls the alarm to alarm and controls the second diverter valve 42 to close the second branch pipe 32 and open the first branch pipe 31, and the alarm reminds the staff to check and repair abnormals.

[0031] As shown in Figures 2-3 The first segment 301 is provided with a threaded segment on the outer diameter, and the connecting end of the second segment 302 is provided with a connecting nut 6, the connecting nut 6 is threadedly connected with the first segment 301, and the magnetic separation device 5 is arranged on the inner wall of the second segment 302 of the main pipe 3; In the embodiment, the magnetic separation device 5 is a conical structure, the inner wall of the conical structure is provided with a magnet piece (not shown in the figure), and the bottom opening of the conical structure is provided, and the conical part is downwardly arranged.

[0032] Specifically, the top edge of the conical structure is provided with a plug rod 52, the inner wall of the second segment 302 of the main pipe 3 is provided with a slot, and the plug rod 52 is used for being inserted into the slot, so as to facilitate dismounting and mounting the magnetic separation device 5; and when the magnetic separation device 5 is mounted on the second segment 302, the upper edge of the magnetic separation device 5 is closed with the pipe wall of the second segment 302, specifically, in order to further improve the sealing effect, a sealing ring 7 is arranged on the upper edge of the magnetic separation device 5, when the connecting nut 6 is tightened, the sealing ring 7 abuts against the end portion of the first segment 301 of the main pipe 3, so as to improve the sealing property of the connection, and at the same time, the magnetic separation device 5 is tightly abutted on the second segment 302.

[0033] More preferably, as shown in Figure 2 In the embodiment, the conical structure can be combined by a plurality of elastic pieces 51, the edges of adjacent elastic pieces 51 are in natural contact, under the action of the gravity of the powder material, the edges of adjacent elastic pieces 51 are separated to form gaps, and the magnet pieces are arranged on the inner wall and the outer wall of the elastic piece 51; When the material gradually falls on the elastic piece 51, with the increase of the gathering weight of the material, the elastic piece 51 is pressed open, which can reduce the problem of blockage caused by material gathering, in addition, the material gathered on the elastic piece 51 can fully magnetically separate the metal in the powder, and reduce the amount of powder for subsequent repeated screening.

[0034] The above is only an embodiment of the present application, and the present application is not limited to the field of the embodiment, and the common knowledge such as specific structures and properties in the scheme is not described in detail herein. It should be pointed out that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope claimed in the present application should be subject to the content of the claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A powder material discharge pipeline, comprising a discharge pipe, a screening pipe arranged on the discharge pipe, a diverter valve provided at the connection between the discharge pipe and the screening pipe, a metal detector provided at the upper end of the discharge pipe located above the diverter valve, the metal detector and the diverter valve being electrically connected to a controller; characterized in that: An automatic screening pipeline is also provided at the lower end of the screening pipe, which includes a main pipe and a first branch pipe and a second branch pipe connected to the main pipe through a tee. The feed end of the main pipe is connected to the discharge end of the screening pipe, the first branch pipe is connected to the abnormal material bag, and the second branch pipe is connected to the discharge end of the discharge pipe; a magnetic separation device for adsorbing mixed metals in the powder is provided on the main pipe, a second steering valve is provided on the tee, and the second steering valve is used to open the first branch pipe or the second branch pipe. A second metal detector and an alarm are also provided on the main pipe, and the second metal detector is located between the magnetic separation device and the tee. The second metal detector and the alarm are both electrically connected to the controller.

2. A powder material discharge pipeline according to claim 1, characterized in that: The main pipe includes a first section and a second section that are detachably connected. A threaded section is provided on the outer diameter of the first section. A connecting nut is passed through the connecting end of the second section. The connecting nut is threadedly connected to the first section. The magnetic separation device is provided on the inner wall of the second section of the main pipe.

3. A powder material discharge pipeline according to claim 2, characterized in that: The magnetic separation device is a conical structure, with magnet pieces arranged on the inner wall of the conical structure, and the bottom of the conical structure is opened, with the conical portion arranged downward.

4. A powder material discharge pipeline according to claim 3, characterized in that: The conical structure is composed of a plurality of elastic sheets. The edges of adjacent elastic sheets are in natural contact. Under the gravity of the powder material, the edges of adjacent elastic sheets are separated to form gaps. The magnet sheets are arranged on the inner and outer walls of the elastic sheets.

5. The powder material discharge pipeline according to claim 4, characterized in that: An insertion rod is provided on the top edge of the conical structure, and a slot is provided on the inner wall of the second section of the main pipe, and the insertion rod is used to be inserted into the slot.

6. A powder material discharge pipeline according to any one of claims 2 to 5, characterized in that: The diameter of the screening pipe is larger than the diameter of the feeding pipe, and the screening pipe is arranged at an inclination.

7. The powder material discharge pipeline according to claim 6, characterized in that: The main pipe is arranged vertically, and the first branch pipe and the second branch pipe are arranged obliquely.

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