Feeding device for an extruder

Abstract

The utility model belongs to PVC foamed board production equipment field discloses a feeding device of extruder, including controller, first spiral feeder, storage tank and second spiral feeder. The utility model discloses through using second spiral feeder to deliver the raw material mixed by mixer to store in storage tank, when needing to feed extruder, the raw material in storage tank is released by discharge pipe and is delivered to extruder through first spiral feeder. The whole feeding process does not need manual transfer to raw material, so can reduce the labor intensity of production personnel. Meanwhile, first cover plate and second cover plate are respectively covered and set on first feeding hopper and second feeding hopper, can realize the sealing of two spiral feeder feeding hopper, when discharge pipe and inlet pipe are respectively fixed and are inserted on first cover plate and second cover plate, can reduce the dust generated when mixer and storage tank discharge, and then improve the environment of raw material workshop.

Description

Technical Field

[0001] This utility model relates to the field of PVC foam board production equipment, and in particular to a feeding device for an extruder. Background Technology

[0002] PVC foamed board is a lightweight sheet material made from polyvinyl chloride resin as the main raw material, combined with a certain proportion of foaming agent, stabilizer, lubricant, filler and other additives, and formed by extrusion. Existing technology typically involves mixing the raw materials used to produce PVC foamed board and then feeding them into the extruder's hopper. For example, Chinese patent document CN208468976U discloses a method of feeding raw materials from a storage bin into the hopper using a feeder.

[0003] However, in actual production, empty storage bins (with rollers at the bottom) need to be manually transferred to the discharge port of the mixer for loading. The mixer generates dust when discharging, which is harmful to the health of production personnel. Moreover, the storage bins are heavy when filled with raw materials, and it requires high labor intensity to manually transfer them to the feed hopper of the feeder. Utility Model Content

[0004] The purpose of this invention is to provide a feeding device for an extruder, which aims to solve the problems of high labor intensity and dust generation in existing raw material conveying methods for extruders.

[0005] A feeding device for an extruder includes a controller and a first screw feeder, as well as a storage tank and a second screw feeder. The first screw feeder includes a first inlet hopper, a first outlet pipe, and a first cover plate. The first cover plate covers the first inlet hopper, and a discharge pipe is connected to the bottom of the storage tank, with the lower end of the discharge pipe fixedly inserted into the first cover plate. The second screw feeder includes a second inlet hopper, a second outlet pipe, and a second cover plate. The second outlet pipe is connected to the top of the storage tank. The second cover plate covers the second inlet hopper, and the inlet pipe is fixedly inserted into the top of the second cover plate. Optionally, the bottom of the storage tank is provided with a spiral feeding pipe communicating with the storage tank, the discharge pipe is connected to the spiral feeding pipe, a spiral feeding rod is rotatably provided inside the spiral feeding pipe, and a first drive motor is provided outside the spiral feeding pipe and is connected to the spiral feeding rod in a transmission.

[0006] Optionally, the storage tank includes a tank body, support legs fixedly connected to the outer wall of the tank body, a weighing sensor located at the bottom of the support legs, and a bracket fixedly located between the support legs; the weighing sensor and the first drive motor are both electrically connected to the controller.

[0007] Optionally, the bracket is equipped with a weight display, which is electrically connected to the controller.

[0008] Optionally, a level gauge is provided on the upper part of the tank, and the second screw feeder also includes a second drive motor. Both the level gauge and the second drive motor are electrically connected to the controller.

[0009] Optionally, the top of the tank is provided with a feeding pipe; a material transfer bag is provided between the feeding pipe and the second discharge pipe; the two ends of the material transfer bag are respectively fixedly sleeved on the feeding pipe and the second discharge pipe.

[0010] Optionally, the bottom of the tank is conical, and the bottom of the tank is connected to a discharge pipe, with a baffle bag fitted over the discharge port of the discharge pipe.

[0011] Optionally, the unloading pipe is provided with an insert plate, the insert plate having a slot communicating with the unloading pipe, a baffle plate being inserted into the slot, and the baffle plate having a circular baffle portion that cooperates with the unloading pipe.

[0012] Optionally, the baffle plate has a bent portion on one side outside the insert plate, and the bent portion is perpendicular to the baffle plate.

[0013] Beneficial effects: This invention provides a feeding device for an extruder. A second screw feeder transports the mixed raw materials from the mixer to a storage tank. When feeding to the extruder is required, the raw materials in the storage tank are discharged through a discharge pipe and then transported to the extruder by a first screw feeder. The entire feeding process eliminates the need for manual transfer of raw materials, thus reducing the labor intensity of production personnel. Simultaneously, a first cover plate and a second cover plate are respectively installed on the first and second feed hoppers, achieving a seal between the two screw feeder feed hoppers. When the discharge pipe and feed pipe are fixedly inserted into the first and second cover plates, dust generated during discharge from the mixer and storage tank is reduced, thereby improving the environment of the raw material workshop. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the feeding device for the extruder provided by this utility model. Figure 1 .

[0016] Figure 2 yes Figure 1 Enlarged view of section A.

[0017] Figure 3 yes Figure 1 Enlarged view of section B.

[0018] Figure 4 This is a schematic diagram of the feeding device for the extruder provided by this utility model. Figure 2 .

[0019] Figure 5 yes Figure 1 Enlarged view of section C.

[0020] Figure 6 This is a schematic diagram of the unloading pipe. Figure 1 .

[0021] Figure 7 This is a schematic diagram of the unloading pipe. Figure 2 .

[0022] Figure 8 This is a schematic diagram of the unloading pipe. Figure 3 .

[0023] Figure 9 This is a schematic diagram of the baffle plate being inserted into the unloading pipe.

[0024] Figure 10 This is a schematic diagram of the structure of the storage tank.

[0025] Icon number explanation: 1-First screw feeder; 101-First feed hopper; 102-First discharge pipe; 103-First cover plate; 2-Storage tank; 201-Tank body; 202-Support leg; 203-Weighing sensor; 204-Bracket; 205-Feeding pipe; 206-Discharge pipe; 3-Second screw feeder; 301-Second feed hopper; 302-Second discharge pipe; 303-Second cover plate; 304-Second drive motor; 4-Discharge pipe; 5-Infeed pipe; 6-Screw feed pipe; 7-Screw feed rod; 8-First drive motor; 9-Weight display; 10-Level gauge; 11-Transfer bag; 12-Blocking bag; 13-Plug-in board; 131-Slot; 14-Baffle plate; 141-Baffle section; 142-Bending section. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0028] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0029] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0030] Please see Figures 1 to 10 This utility model provides a feeding device for an extruder, including a controller, a first screw feeder 1, a storage tank 2, and a second screw feeder 3.

[0031] The first screw feeder 1 includes a first feed hopper 101, a first discharge pipe 102, and a first cover plate 103. The first cover plate 103 is fixedly installed on the first feed hopper 101. The bottom of the storage tank 2 is connected to a discharge pipe 4, the lower end of which is fixedly inserted into the first cover plate 103. The first discharge pipe 102 communicates with the feed hopper of the extruder.

[0032] The second screw feeder 3 includes a second feed hopper 301, a second discharge pipe 302, and a second cover plate 303. The second discharge pipe 302 is connected to the top of the storage tank 2; the second cover plate 303 covers the second feed hopper 301, and the feed pipe 5 is fixedly inserted into the top of the second cover plate 303. The feed pipe 5 is connected to the discharge port of the mixer (not shown in the attached drawings).

[0033] In practical applications, the raw materials mixed by the mixer are discharged from the mixer's outlet and fed into the second feed hopper 301 via the feed pipe 5. They are then transported to the storage tank 2 by the second screw conveyor 3. When feeding the extruder, the raw materials in the storage tank 2 are discharged from the discharge pipe 4 into the first feed hopper 101, and then transported to the extruder's feed hopper by the first screw conveyor 1, thus completing the feeding of the extruder. The entire feeding process requires no manual transfer of raw materials, thereby reducing the labor intensity of production personnel. Simultaneously, the first cover plate 103 and the second cover plate 303 are respectively installed on the first feed hopper 101 and the second feed hopper 301, achieving a seal between the two screw conveyor feed hoppers. When the discharge pipe 4 and the feed pipe 5 are fixedly inserted onto the first cover plate 103 and the second cover plate 303, respectively, dust generated during the discharge from the mixer and storage tank 2 is reduced, thereby improving the environment of the raw material workshop.

[0034] Specifically, a working trough can be opened below the ground, and the first feed hopper 101 is installed in the working trough. Thus, the raw materials released from the bottom of the storage tank 2 can be transported to the production workshop on the side of the raw material workshop by the first spiral feeder 1 set at an upward angle.

[0035] like Figure 1 , Figure 2 , Figure 4 , Figure 5 as well as Figure 10 As shown, in an optional embodiment, the bottom of the storage tank 2 is provided with a spiral feeding pipe 6 communicating with the storage tank 2, and the discharge pipe 4 is communicated with the spiral feeding pipe 6. A spiral feeding rod 7 is rotatably provided inside the spiral feeding pipe 6, and a first drive motor 8 is provided outside the spiral feeding pipe 6 and is drivenly connected to the spiral feeding rod 7. In this embodiment, the spiral feeding rod 7 is driven to rotate inside the spiral feeding pipe 6 by the first drive motor 8, which can form a stable conveying force for the raw material discharged from the storage tank 2 into the spiral feeding pipe 6, avoiding blockage at the bottom of the storage tank 2 or at the discharge pipe 4 due to the poor flowability of the raw material, thereby ensuring the continuity of raw material conveying, and thus ensuring a stable supply of material to the extruder, avoiding the impact of raw material supply interruption on the production efficiency of the extruder.

[0036] Specifically, the first drive motor 8 can be driven by the screw feed rod 7 through a chain transmission mechanism.

[0037] like Figure 1 , Figure 4 as well as Figure 5 As shown, in an optional embodiment, the storage tank 2 includes a tank body 201, support legs 202 fixedly connected to the outer wall of the tank body 201, a weighing sensor 203 disposed at the bottom of the support legs 202, and a bracket 204 fixedly disposed between the support legs 202; the weighing sensor 203 and the first drive motor 8 are both electrically connected to the controller. The first drive motor 8 can be mounted on the bracket 204. In this embodiment, the weighing sensor 203 can monitor the total weight of the tank body 201 and the raw materials inside in real time, and transmit the weight data to the controller. Based on the weight data monitored by the weighing sensor 203, the controller automatically controls the operation of the first drive motor 8, thereby automatically realizing the discharge of materials from the storage tank 2.

[0038] For example, the load cell 203 can be a weighing module of model SWC515-A.

[0039] like Figure 4 As shown, in an optional embodiment, a weight display 9 is provided on the bracket 204, and the weight display 9 is electrically connected to the controller. The weight display 9, located on the bracket 204 and electrically connected to the controller, can intuitively display the weight data received by the controller, allowing production personnel to easily check the remaining raw material quantity in real time, thereby enabling them to promptly determine the timing of replenishing the raw material in the storage tank 2.

[0040] like Figure 1 As shown, in an optional embodiment, a level gauge 10 is provided on the upper part of the tank 201, and the second screw feeder 3 further includes a second drive motor 304. Both the level gauge 10 and the second drive motor 304 are electrically connected to the controller. The level gauge 10 can be used to monitor the height of the raw material in the tank 201 and transmit the level signal to the controller. When the raw material height in the tank 201 is high and is detected by the level gauge 10, the controller automatically controls the second drive motor 304 to stop running, thereby preventing the second screw feeder 3 from conveying raw material into the tank 201, effectively preventing the risk of tank explosion.

[0041] like Figure 1 and Figure 3 As shown, in an optional embodiment, the top of the tank 201 is provided with a feeding pipe 205; a material transfer bag 11 is provided between the feeding pipe 205 and the second discharge pipe 302; the two ends of the material transfer bag 11 can be fixedly sleeved on the feeding pipe 205 and the second discharge pipe 302 respectively by means of clamps. In this embodiment, the material transfer bag 11 can flexibly connect the feeding pipe 205 and the second discharge pipe 302, which facilitates the installation of the second screw conveyor 3; and because the material transfer bag 11 is easy to disassemble, it is convenient for production personnel to maintain the second screw conveyor.

[0042] like Figure 4 and Figure 5 As shown, in an optional embodiment, the bottom of the tank 201 is conical, and a discharge pipe 206 is connected to the bottom of the tank 201. A baffle bag 12 is fitted over the discharge port of the discharge pipe 206. In this embodiment, when the bottom of the tank 201 is conical, gravity can be used to guide the raw material in the tank 201 to gather towards the center of the bottom of the tank 201, avoiding the accumulation of raw material in the corners of the bottom of the tank 201, and ensuring that the raw material enters the subsequent feeding stage more fully. When the bottom of the tank 201 is connected to the discharge pipe 206, the discharge pipe 206 can be used as a dedicated channel for emptying the raw material from the tank 201, facilitating the discharge of residual raw material in the tank. The baffle bag 12 can be tied to the discharge pipe 206. When unloading is not required, the baffle bag 12 can prevent the raw material from being discharged from the discharge pipe 206 to the outside of the tank 201.

[0043] like Figures 5 to 9 As shown, in an optional embodiment, the unloading pipe 206 is provided with an insert plate 13. The insert plate 13 has a slot 131 communicating with the unloading pipe 206. A baffle plate 14 is inserted into the slot 131. The baffle plate 14 has a circular baffle portion 141 that cooperates with the unloading pipe 206. In this embodiment, after the baffle plate 14 is inserted into the slot 131, the circular baffle portion 141 of the baffle plate 14 can block the raw material from being discharged from the unloading pipe 206. Therefore, when the production personnel remove the baffle bag 12 from the unloading pipe 206, but no material box or bag is placed below the unloading pipe 206, the baffle plate 14 can prevent the raw material from falling directly to the ground.

[0044] Moreover, the baffle plate 14 slides with the insert plate 13 through the slot 131, making operation simple and convenient. Production personnel only need to insert or remove the baffle plate 14 to quickly control the opening and closing of the unloading pipe 206.

[0045] like Figure 6 As shown, in an optional embodiment, the baffle plate 14 has a bent portion 142 on one side outside the insert plate 13, and the bent portion 142 is perpendicular to the baffle plate 14. The bent portion 142 provides a convenient point of force application for production personnel, making it easy to push the baffle plate 14.

[0046] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A feeding device for an extruder, comprising a controller and a first screw feeder (1), characterized in that, It also includes a storage tank (2) and a second screw feeder (3); the first screw feeder (1) includes a first feed hopper (101), a first discharge pipe (102) and a first cover plate (103); the first cover plate (103) is placed on the first feed hopper (101), and the bottom of the storage tank (2) is connected to a discharge pipe (4), the lower end of the discharge pipe (4) is fixedly inserted on the first cover plate (103); the second screw feeder (3) includes a second feed hopper (301), a second discharge pipe (302) and a second cover plate (303); the second discharge pipe (302) is connected to the top of the storage tank (2); the second cover plate (303) is placed on the second feed hopper (301), and the top of the second cover plate (303) is fixedly inserted with a feed pipe (5).

2. The feeding device for the extruder according to claim 1, characterized in that, The bottom of the storage tank (2) is provided with a spiral feeding pipe (6) that communicates with the storage tank (2). The discharge pipe (4) is connected to the spiral feeding pipe (6). A spiral feeding rod (7) is rotatably provided inside the spiral feeding pipe (6). A first drive motor (8) is provided outside the spiral feeding pipe (6) and is connected to the spiral feeding rod (7) in a transmission.

3. The feeding device for the extruder according to claim 2, characterized in that, The storage tank (2) includes a tank body (201), a support leg (202) fixedly connected to the outer wall of the tank body (201), a weighing sensor (203) located at the bottom of the support leg (202), and a bracket (204) fixedly located between the support legs (202); the weighing sensor (203) and the first drive motor (8) are both electrically connected to the controller.

4. The feeding device for the extruder according to claim 3, characterized in that, The bracket (204) is equipped with a weight display (9), which is electrically connected to the controller.

5. The feeding device for the extruder according to claim 3, characterized in that, The upper part of the tank (201) is provided with a level gauge (10), and the second screw feeder (3) also includes a second drive motor (304). The level gauge (10) and the second drive motor (304) are both electrically connected to the controller.

6. The feeding device for the extruder according to claim 3, characterized in that, The top of the tank (201) is provided with a feeding pipe (205); a material transfer bag (11) is provided between the feeding pipe (205) and the second discharge pipe (302); the two ends of the material transfer bag (11) are respectively fixedly sleeved on the feeding pipe (205) and the second discharge pipe (302).

7. The feeding device for the extruder according to claim 3, characterized in that, The bottom of the tank (201) is conical, and the bottom of the tank (201) is connected to a discharge pipe (206), and the discharge port of the discharge pipe (206) is fitted with a baffle bag (12).

8. The feeding device for the extruder according to claim 7, characterized in that, The unloading pipe (206) is provided with a plate (13), the plate (13) has a slot (131) communicating with the unloading pipe (206), a baffle plate (14) is inserted into the slot (131), and the baffle plate (14) has a circular baffle part (141) that cooperates with the unloading pipe (206).

9. The feeding device for the extruder according to claim 8, characterized in that, The baffle plate (14) has a bent portion (142) on one side outside the insert plate (13), and the bent portion (142) is perpendicular to the baffle plate (14).

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