A purging mechanism for a bidirectional screw feeder

Abstract

This utility model provides a purging mechanism for a bidirectional screw feeder, relating to the technical field of bidirectional screw feeders. It includes: a fixed ring with an opening on its side wall; a first fixed seat disposed on one end face of the fixed ring, with a first through hole inside; a second fixed seat disposed on the other end face of the fixed ring, with a second through hole inside; a locking member disposed inside the first and second through holes for locking and closing both ends of the fixed ring; an air inlet pipe disposed on the outside of the fixed ring; multiple air outlet pipes spaced apart on the outer wall of the air inlet pipe and connected to it respectively; and a nozzle connected to the other end of each air outlet pipe, with each nozzle inclined on the outer bottom of the fixed ring. This purging mechanism can prevent steam from flowing back into the interior of the bidirectional screw feeder during material feeding, thus avoiding blockage inside the bidirectional screw feeder.

Description

Technical Field

[0001] This utility model relates to the field of bidirectional screw feeder technology, and specifically to a purging mechanism for a bidirectional screw feeder. Background Technology

[0002] Currently, when adding polyferric sulfate, a vacuum feeder and a bidirectional screw feeder are used together. During this process, when the polyferric sulfate is discharged from the discharge port of the bidirectional screw feeder, the vapor will flow back into the bidirectional screw feeder. Since polyferric sulfate has a strong water absorption capacity and will condense after absorbing water, it will affect the operation of the bidirectional screw feeder, thus requiring a lot of manpower and resources to clear the blockage inside the bidirectional screw feeder. Utility Model Content

[0003] This invention addresses the problem that when polyferric sulfate is discharged from a bidirectional screw feeder, steam tends to flow back into the feeder, causing the polyferric sulfate to condense and block the feeder. It provides a purging mechanism for the bidirectional screw feeder that prevents steam from flowing back into the feeder during the feeding process, thus avoiding blockage.

[0004] The technical solution adopted in this utility model is: A purging mechanism for a bidirectional screw feeder is provided, comprising: A retaining ring having an opening on its side wall surface; The first fixing seat is located on one end face of the fixing ring, and the first fixing seat has a first through hole inside; The second fixing seat is located on the other end face of the fixing ring, and the second fixing seat has a second through hole inside; A locking element, located inside the first through hole and the second through hole, is used to lock and close the two ends of the retaining ring. The intake pipe is located outside the retaining ring; Multiple air outlet pipes are spaced apart on the outer wall of the air inlet pipe and connected to the air inlet pipe respectively; the other end of each air outlet pipe is connected to a nozzle, and each nozzle is inclined on the outer bottom of the fixing ring.

[0005] Optionally, the outer bottom of the fixing ring is provided with a plurality of first fixing plates, the same number as the number of nozzles, and each first fixing plate has a first fixing hole inside; the outer top of each nozzle is provided with two second fixing plates located on both sides of each first fixing plate, each second fixing plate has a second fixing hole inside, and an adjusting bolt is provided inside the second fixing hole. A second nut is threaded on the outer wall of the adjusting bolt for locking the two second fixing plates with the first fixing plates.

[0006] Optionally, the number of air outlet pipes is four. When they are fixedly arranged around the discharge port of the bidirectional screw feeder, the angle between the connecting lines of the central axis of the adjacent air outlet pipes and the central axis of the discharge port of the bidirectional screw feeder is 90°.

[0007] Optionally, the outer bottom of the fixing ring is provided with a telescopic rod that matches the number of nozzles, and each first fixing piece is provided on the telescopic end of the corresponding telescopic rod.

[0008] Optionally, the outer wall of the retaining ring is provided with a receiving rod that matches the number of nozzles, for winding around the corresponding air outlet pipe.

[0009] Optionally, the outer top of the retaining ring is provided with multiple clips to lock the air intake pipe for limiting its position.

[0010] Optionally, a protective plate is provided at the outlet of each nozzle.

[0011] Optionally, an anti-slip pad is provided on the inner wall surface of the retaining ring.

[0012] Optionally, the intake manifold is equipped with a connected solenoid valve.

[0013] Optionally, a pressure reducing valve is also installed inside the intake pipe.

[0014] The beneficial effects of this utility model are: By adjusting the locking components located in the first and second through holes, the two ends of the fixing ring at the opening are separated, allowing the fixing ring to fit over the discharge port of the bidirectional screw feeder. Once the fixing ring is properly positioned, the multiple nozzles at the bottom of the fixing ring are tilted towards the discharge port of the bidirectional screw feeder. Next, by adjusting the locking components, the fixing ring is locked onto the outer wall of the discharge port of the bidirectional screw feeder. Then, air is introduced into the inlet pipe. The gas enters through multiple outlet pipes and is discharged into the corresponding nozzles, ultimately exiting through the nozzles. This prevents steam from reversing and entering the interior of the bidirectional screw feeder during the feeding process, which could cause condensation of polyferric sulfate and thus affect the operation of the bidirectional screw feeder. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1This is a top view of a purging mechanism for a bidirectional screw feeder disclosed in this embodiment; Figure 2 This is a schematic diagram of the main structure of the purging mechanism; Figure 3 for Figure 1 A magnified view of a portion of point A in the middle; Figure 4 This is a schematic diagram of the connection structure between the nozzle and the retaining ring.

[0017] Figure label: 1-Fixing ring, 10-Opening, 11-Anti-slip pad, 12-Storage rod; 2-First fixing seat, 20-First through hole; 3-Second fixing seat, 30-Second through hole; 4-Locking bolt, 40-First nut; 5-Intake pipe, 50-Solenoid valve, 51-Pressure reducing valve, 52-Snap fastener; 6-Exhaust pipe; 7-Telescopic rod, 70-First fixing plate, 701-First fixing hole, 71-Second fixing plate, 710-Second fixing hole; 8 - Adjusting bolt, 80 - Second nut; 9 - Nozzle, 90 - Protective plate. Detailed Implementation

[0018] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 of this utility model.

[0019] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this invention.

[0020] The embodiments of the utility model will now be described in detail with reference to the accompanying drawings.

[0021] Example

[0022] Please see Figure 1-4 As shown, this embodiment discloses a purging mechanism for a bidirectional screw feeder, including a fixed ring 1, a first fixed seat 2, a second fixed seat 3, a locking member, an air inlet pipe 5, and multiple air outlet pipes 6. Specifically, the side wall of the fixed ring 1 has an opening 10, which allows the radius of the fixed ring 1 to be adjusted, making it easy to fit the fixed ring 1 onto the outer wall of the discharge port of the bidirectional screw feeder. After the fixed ring 1 is fitted onto the discharge port of the bidirectional screw feeder, the first fixed seat 2 and the second fixed seat 3 at both ends of the fixed ring 1 are locked and closed by adjusting the locking member located in the first through hole 20 and the second through hole 30, thereby achieving the effect of closing the fixed ring 1 so that the fixed ring 1 is tightly attached to the discharge port of the bidirectional screw feeder. In this embodiment, the locking components are a locking bolt 4 and a first nut 40. The locking bolt 4 is located inside the first through hole 20 of the first fixing seat 2 and the second through hole 30 of the second fixing seat 3, while the first nut 40 is located outside the second fixing seat 3. The first nut 40 and the locking bolt 4 are threadedly connected. When it is necessary to adjust the tightness of the fixing ring 1, the tightness of the fixing ring 1 can be adjusted by adjusting the threaded connection between the locking bolt 4 and the first nut 40. The air inlet pipe 5 is located on the outer top of the fixing ring 1 and can be installed by means of bonding or other methods. One end of the air inlet pipe 5 is used to introduce gas, and the other end is laid along the outer top of the fixing ring 1. Multiple air outlet pipes 6 are spaced apart on the outer wall of the air inlet pipe 5. Each air outlet pipe 6 is connected to the air inlet pipe 5. A nozzle 9 is connected to the other end of each air outlet pipe 6. Each nozzle 9 is inclined on the outer bottom of the fixing ring 1, so that the outlet of each nozzle 9 faces the discharge port of the bidirectional screw feeder. That is, during the feeding process of the bidirectional screw feeder, gas is introduced into the other end of the air inlet pipe 5. The gas enters the multiple connected air outlet pipes 6 through the air inlet pipe 5, and then passes through the multiple air outlet pipes 6 for transition, so that the gas is sprayed out from each nozzle 9 and sprayed out towards the discharge port of the bidirectional screw feeder. This prevents steam from backflowing into the bidirectional screw feeder and avoids the condensation of polyferric sulfate, which would block the normal operation of the bidirectional screw feeder.

[0023] Furthermore, there are four air outlet pipes 6, and the number of nozzles 9 is the same as the number of air outlet pipes 6. When the fixing ring 1 is closed and pressed against the outer wall of the discharge port of the bidirectional screw feeder by the locking device, the angle formed by the connecting line between the central axis of the adjacent air outlet pipe 6 and the central axis of the fixing ring 1 is 90°. Through the special position and number design of the air outlet pipes 6, the gas discharged by the air outlet pipes 6 can completely cover the discharge port of the bidirectional screw feeder, thereby preventing steam from backflowing into the interior of the bidirectional screw feeder.

[0024] Multiple first fixing plates 70 are provided on the outer bottom of the aforementioned fixing ring 1. The number of first fixing plates 70 is the same as the number of nozzles 9. Each first fixing plate 70 has a first fixing hole 701 inside. At least two second fixing plates 71 are provided on the outer top of each nozzle 9. The two second fixing plates 71 are located on both sides of the first fixing plate 70, that is, the first fixing plate 70 is located between the two second fixing plates 71. A second fixing hole 710 is provided inside each second fixing plate 71. An adjusting bolt 8 is provided inside the second fixing hole 710. A second nut 80 is threadedly connected to the outer wall of the adjusting bolt 8. The second nut 80 is located outside one of the second fixing plates 71. That is, by adjusting the thread connection between the adjusting bolt 8 and the second nut 80, the tightness between the two second fixing plates 71 and the first fixing plate 70 can be adjusted, thereby adjusting the tilt angle of the nozzle 9 on the outer bottom of the fixing ring 1.

[0025] Multiple telescopic rods 7 are provided on the outer bottom of the aforementioned fixed ring 1. The number of telescopic rods 7 is the same as the number of nozzles 9. Each first fixing piece 70 is set on the telescopic end of the telescopic rod 7. When the fixed ring 1 is fixed at different positions at the discharge port of the bidirectional screw feeder, the distance from the nozzle 9 to the discharge port of the bidirectional screw feeder will change. The height position of the nozzle 9 can be adjusted by adjusting the telescopic rods 7, so that the outlet of the nozzle 9 can blow to the discharge port of the bidirectional screw feeder, thereby improving the applicability of the blowing mechanism. It should be noted that the telescopic rod 7 in this embodiment is a telescopic rod 7 with an emergency stop function.

[0026] Furthermore, a number of receiving rods 12, matching the number of nozzles 9, are provided on the outer wall of the aforementioned fixing ring 1. The air outlet pipe 6 can be wound around the receiving rod 12. That is, when the height of the nozzle 9 is adjusted, the length of the air outlet pipe 6 will also change, so the air outlet pipe 6 needs to have a certain extension and retraction margin. This can be solved by winding a certain length of the air outlet pipe 6 around the receiving rod 12. It should be noted that there is a certain gap between the air outlet pipe 6 and the receiving rod 12. This gap can prevent the air outlet pipe 6 from being wound too tightly with the receiving rod 12 during the extension and retraction process, which would obstruct the gas discharge from the air outlet pipe 6.

[0027] Multiple clips 52 are provided on the outer top of the aforementioned fixing ring 1. These clips 52 can be used to limit the air inlet pipe 5, facilitating the removal of the air inlet pipe 5 and the air outlet pipe 6 from the fixing ring 1. A protective plate 90 is provided at the outlet of each nozzle 9. The protective plate 90 can prevent material from falling onto the top of the nozzle 9 during the feeding process of the bidirectional screw feeder, thus preventing a small amount of material from entering the interior of the nozzle 9 and affecting its use. An anti-slip pad 11 is provided on the inner wall of the aforementioned fixing ring 1, which can improve the fixing stability of the fixing ring 1 on the outer wall of the feeding port of the bidirectional screw feeder. A solenoid valve 50 and a pressure reducing valve 51 are respectively provided inside the aforementioned air inlet pipe 5. The solenoid valve 50 can automatically control the gas entering the air inlet pipe 5, while the pressure reducing valve 51 can control the gas flow rate from the air inlet pipe 5 to the air outlet pipe 6, thereby controlling the flow rate of the discharged gas.

[0028] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Without conflict, the embodiments and features described in the embodiments of this application can be arbitrarily combined with each other. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A purging mechanism for a bidirectional screw feeder, characterized in that, include: A retaining ring having an opening on its side wall surface; A first fixing seat is provided on one end face of the fixing ring, and a first through hole is provided inside the first fixing seat; The second fixing seat is disposed on the other end face of the fixing ring, and the second fixing seat has a second through hole inside; A locking element, which is disposed inside the first through hole and the second through hole, is used to lock and close the two ends of the fixing ring; An air intake pipe is located outside the fixed ring; Multiple air outlet pipes are spaced apart on the outer wall of the air inlet pipe and are connected to the air inlet pipe respectively; the other end of each air outlet pipe is connected to a nozzle, and each nozzle is inclinedly disposed on the outer bottom of the fixing ring.

2. The purging mechanism for a bidirectional screw feeder according to claim 1, characterized in that, The outer bottom of the fixing ring is provided with a plurality of first fixing plates, the same number as the number of nozzles, and each first fixing plate has a first fixing hole inside; the outer top of each nozzle is provided with two second fixing plates located on both sides of each first fixing plate, each second fixing plate has a second fixing hole inside, and an adjusting bolt is provided inside the second fixing hole. A second nut is threaded on the outer wall of the adjusting bolt for locking the two second fixing plates with the first fixing plates.

3. The purging mechanism for a bidirectional screw feeder according to claim 2, characterized in that, The number of air outlet pipes is four. When the fixed ring is installed at the discharge port of the bidirectional screw feeder, the angle between the connecting lines between the central axis of the adjacent air outlet pipes and the central axis of the discharge port of the bidirectional screw feeder is 90°.

4. The purging mechanism for a bidirectional screw feeder according to claim 2, characterized in that, The outer bottom of the fixing ring is provided with telescopic rods that are the same number as the number of nozzles, and each of the first fixing pieces is provided on the telescopic end of the corresponding telescopic rod.

5. The purging mechanism for a bidirectional screw feeder according to claim 4, characterized in that, The outer wall of the fixing ring is provided with a receiving rod that is the same number as the number of nozzles, for winding around the corresponding air outlet pipe.

6. The purging mechanism for a bidirectional screw feeder according to claim 1, characterized in that, The outer top of the fixing ring is provided with multiple buckles to lock the air intake pipe for limiting its position.

7. The purging mechanism for a bidirectional screw feeder according to claim 1, characterized in that, Each of the nozzles is provided with a protective plate at its outlet.

8. The purging mechanism for a bidirectional screw feeder according to claim 1, characterized in that, The inner wall surface of the fixing ring is provided with an anti-slip pad.

9. The purging mechanism for a bidirectional screw feeder according to claim 1, characterized in that, The intake pipe is equipped with a connected solenoid valve.

10. The purging mechanism for a bidirectional screw feeder according to claim 1, characterized in that, The intake pipe is also equipped with a pressure reducing valve.

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