Calcium carbonate particle preparation equipment for PE breathable film

Abstract

The calcium carbonate particle preparation equipment comprises a machine body, a feeding hopper arranged above the machine body, a double-screw extrusion structure arranged in the machine body and an extrusion driving part for driving the double-screw extrusion structure to work, and a discharging opening is formed in the end, away from the feeding hopper, of the machine body; a stirring mechanism for pushing calcium carbonate powder in the feeding hopper to move is further arranged on the feeding hopper and comprises a plurality of rotating discs rotationally connected to the feeding hopper, stirring rods fixed to the rotating discs and stirring driving parts for driving the rotating discs to rotate, and the axis of each stirring rod and the rotating axis of the corresponding rotating disc form an included angle; the stirring rod is arranged in the feeding hopper and is inserted into the calcium carbonate. After calcium carbonate powder is placed in the feeding hopper, the rotating disc drives the stirring rod to rotate in the feeding hopper, and the stirring rod drives the calcium carbonate powder to move in the feeding hopper, so that the calcium carbonate powder cannot be accumulated, and the calcium carbonate powder can smoothly move downwards along the feeding hopper.

Description

Technical Field

[0001] The present application relates to the technical field of extruders, and in particular to a device for preparing calcium carbonate particles for PE breathable membranes. Background Art

[0002] Calcium carbonate particles are an important raw material for the production of PE breathable membranes. In the preparation process, calcium carbonate particles are usually prepared by mixing powders mixed with calcium carbonate powder and various additives using an extruder and extruding them to form masterbatches.

[0003] Chinese patent application number 202220177135.5 discloses a twin-screw extruder for calcium carbonate masterbatch, comprising an extruder body, a motor is installed at one end of the extruder body, a twin-screw extrusion rod is installed inside the extruder body, an extrusion port is installed at one end of the extruder body, a feed hopper is installed on the upper side of one end of the extruder body, inspection ports are opened on both sides of the extruder body, and an upper cover and a lower cover are respectively installed in the two inspection ports, the extruder body, the upper cover and the lower cover are connected and fixed by connecting parts, and a heating and insulation layer is installed inside the upper cover and the lower cover.

[0004] However, after the calcium carbonate powder is placed in the feed hopper, the calcium carbonate powders will be squeezed against each other, causing the calcium carbonate powder to accumulate in the feed hopper and not easily fall into the extruder body, thus affecting the extrusion of the calcium carbonate masterbatch.

[0005] Therefore, it is necessary to propose a new technical solution to solve the above problems. Utility Model Content

[0006] In order to prevent the calcium carbonate powder in the feed hopper from being easily accumulated in the feed hopper and unable to move downward, the present application provides a calcium carbonate particle preparation device for PE breathable membrane.

[0007] The present application provides a device for preparing calcium carbonate particles for PE breathable membrane, which adopts the following technical solution:

[0008] A calcium carbonate particle preparation device for PE breathable film, comprising a machine body, a feed hopper arranged above the machine body, a twin-screw extrusion structure arranged in the machine body, and an extrusion drive member driving the twin-screw extrusion structure to work, wherein a discharge port is arranged at one end of the machine body away from the feed hopper, and the lower end of the feed hopper is connected to the inner cavity of the machine body;

[0009] The feed hopper is also provided with a stirring mechanism for pushing the calcium carbonate powder in the feed hopper to move. The stirring mechanism includes a plurality of turntables rotatably connected to the feed hopper, a stirring rod fixed on the turntable and a stirring driving member for driving the turntable to rotate. The axis of the stirring rod is arranged at an angle to the rotation axis of the turntable. The stirring rod is arranged in the feed hopper and inserted into the calcium carbonate.

[0010] By adopting the above technical solution, after the calcium carbonate powder is placed in the feed hopper, the turntable drives the stirring rod to rotate in the feed hopper, and the stirring rod drives the calcium carbonate powder to move in the feed hopper, so that the calcium carbonate powder will not accumulate and the calcium carbonate powder can move smoothly downward along the feed hopper.

[0011] Optionally: a plurality of clearance holes for inserting stirring rods are provided on the inner wall of the feed hopper, and a plurality of protective sleeves for closing the clearance holes are also provided on the inner wall of the feed hopper, and the protective sleeves are open at one end close to the clearance holes, and the stirring rods are inserted in the protective sleeves.

[0012] By adopting the above technical solution, when the stirring rod rotates in the feed hopper, the opening of the clearance hole is closed by using a protective sleeve, and then the protective sleeve is put on the outside of the stirring rod to prevent the stirring rod from directly contacting the calcium carbonate powder, and at the same time prevent the calcium carbonate powder from leaking from the clearance hole.

[0013] Optionally: a reinforcement piece is provided at one end of the protective sleeve away from the clearance hole, an end of the protective sleeve close to the reinforcement piece is open and fixed on the reinforcement piece, an insertion groove is provided at one end of the reinforcement piece close to the clearance hole, and an end of the stirring rod away from the turntable is inserted into the insertion groove.

[0014] By adopting the above technical solution, after the stirring rod is inserted into the protective sleeve, the end of the stirring rod is inserted into the reinforcement member, so that during the rotation of the stirring rod, the end of the stirring rod directly applies force to the reinforcement member, and then the reinforcement member transfers the force to the protective sleeve. By increasing the contact area between the reinforcement member and the protective sleeve, the contact position of the protective sleeve and the reinforcement member is not easily damaged due to excessive pressure.

[0015] Optionally: a rotating sleeve is rotatably connected in the plug-in slot, and the stirring rod is inserted in the rotating sleeve.

[0016] By adopting the above technical solution, the stirring rod can directly apply force to the rotating sleeve when it rotates, and the rotating sleeve can rotate relative to the reinforcement member, so that when the protective sleeve rotates under the drive of the stirring rod, the protective sleeve itself is not easy to be twisted, making the protective sleeve not easy to be damaged.

[0017] Optionally, the end of the stirring rod abuts against the inner wall of the rotating sleeve, and a gap is left between the stirring rod and the inner wall of the rotating sleeve.

[0018] By adopting the above technical solution, when the stirring rod drives the rotating sleeve to rotate, relative movement will also occur between the stirring rod and the rotating sleeve, so that the protective sleeve is not easily twisted and deformed.

[0019] Optionally: a plurality of protrusions are provided on the outer wall of the protective sleeve.

[0020] By adopting the above technical solution, the contact area between the protective sleeve and the calcium carbonate powder is increased by utilizing the protrusions, so that the protective sleeve can more easily drive the calcium carbonate powder to move during the movement.

[0021] Optionally, the angles formed between adjacent stirring rods and the vertical plane are different in degree.

[0022] By adopting the above technical solution, during the rotation of the stirring rod, a larger range of calcium carbonate powder can be moved by the force applied by the stirring rod, so that the stirring effect is better and the calcium carbonate powder is not easy to accumulate.

[0023] Optionally: a plurality of telescopic rods are provided at the end of the reinforcement member close to the clearance hole, one end of the telescopic rod is hinged to the reinforcement member ball, and the other end of the telescopic rod is hinged to the feed hopper ball.

[0024] By adopting the above technical solution, the telescopic rod is used to limit the rotation of the reinforcement member relative to the protective sleeve, so that the connection between the reinforcement member and the protective sleeve is not easily affected, and the protective sleeve is not easily damaged due to excessive twisting.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. A protective sleeve is set in the feed hopper, and then the protective sleeve is driven by a stirring rod to stir the calcium carbonate powder in the feed hopper, so that the calcium carbonate powder can smoothly fall from the feed hopper into the machine body;

[0027] 2. A reinforcement piece is arranged at the end of the protective sleeve so that the stirring rod directly applies force to the reinforcement piece, and then the reinforcement piece is used to transfer the force to the protective sleeve to drive the protective sleeve to rotate, thereby reducing the pressure on the protective sleeve and making the protective sleeve less likely to be damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;

[0029] Figure 2 This is a schematic diagram for illustrating the structure of a stirring mechanism according to an embodiment of the present application;

[0030] Figure 3 for Figure 2 Enlarged view of part A.

[0031] In the figure, 1, machine body; 11, feed hopper; 111, clearance hole; 12, discharge port; 13, mounting frame; 2, stirring mechanism; 21, turntable; 22, stirring rod; 23, stirring drive member; 3, protective cover; 31, reinforcement member; 311, plug-in slot; 32, protrusion; 33, rotating sleeve; 34, telescopic rod. DETAILED DESCRIPTION

[0032] The present application is further described in detail below in conjunction with the accompanying drawings.

[0033] The present application discloses a device for preparing calcium carbonate particles for PE breathable membrane, such as Figure 1 As shown, it includes a machine body 1, a feed hopper 11 arranged above the machine body 1, a twin-screw extrusion structure arranged in the machine body 1, and an extrusion drive member for driving the twin-screw extrusion structure to rotate. In this embodiment, the extrusion drive member is a motor, and the free end of the extrusion drive member is connected to one end of the twin-screw extrusion structure through a reduction box, thereby driving the twin-screw extrusion mechanism to rotate. The lower end of the feed hopper 11 is connected to the inner cavity of the machine body 1, and calcium carbonate is placed in the feed hopper 11 and flows into the machine. A discharge port 12 is provided at one end of the machine body 1 away from the feed hopper 11, and the discharge port 12 is connected to the inner cavity of the machine body 1, so that the extruded calcium carbonate particles are discharged from the discharge port 12.

[0034] like Figure 2 As shown, a mounting frame 13 is provided on the outer wall of the feed hopper 11, and a stirring mechanism 2 for stirring the calcium carbonate powder is provided on the mounting frame 13. The stirring mechanism 2 is respectively provided on both sides of the feed hopper 11, and the stirring mechanism 2 includes a plurality of turntables 21 rotatably connected to the mounting frame 13, stirring rods 22 respectively fixed on the turntables 21, and a stirring driving member 23 for driving the turntables 21 to rotate. A plurality of clearance holes 111 are penetrated on the inner wall of the feed hopper 11, and the stirring rod 22 passes through the clearance holes 111 and extends into the inner cavity of the feed hopper 11. The axis of the stirring rod 22 is set at an angle with the rotation axis of the turntable 21, so that during the rotation of the turntable 21, the stirring rod 22 can stir the calcium carbonate in the feed hopper 11, so that it is not easy to squeeze between the calcium carbonates, so that the calcium carbonate can smoothly move downward along the feed hopper 11. In this embodiment, the stirring driving member 23 uses a motor, and the output shaft of the stirring driving member 23 is connected to the turntable 21 to drive the turntable 21 to rotate.

[0035] A protective sleeve 3 is also provided on the inner wall of the feed hopper 11 to close the clearance hole 111. The end of the protective sleeve 3 close to the clearance hole 111 is open. The protective sleeve 3 is sleeved outside the clearance hole 111 and fixed to the inner wall of the feed hopper 11 with bolts. The protective sleeve 3 is made of rubber. A plurality of protrusions 32 are also provided on the outer wall of the protective sleeve 3. During the stirring process of the protective sleeve 3, the protrusions 32 are used to increase the contact area with the calcium carbonate, so that the stirring rod can push the calcium carbonate more easily. The stirring rod 22 passes through the clearance hole 111 and is inserted into the protective sleeve 3. During the rotation of the stirring rod 22, the protective sleeve 3 is driven to rotate, thereby stirring the calcium carbonate. During the stirring process, the calcium carbonate powder is not easy to fall from the clearance hole 111.

[0036] like Figure 3As shown, during the rotation of the stirring rod 22, the end of the stirring rod 22 away from the turntable 21 will abut against the protective sleeve 3 and apply force to the protective sleeve 3 to mobilize the protective sleeve 3 to rotate, and the position where the stirring rod 22 contacts the protective sleeve 3 will cause the protective sleeve 3 to be subjected to excessive stress, which is easy to cause damage to the protective sleeve 3. Therefore, the end of the protective sleeve 3 away from the clearance hole 111 is also open, and the end of the protective sleeve 3 away from the clearance hole 111 is provided with a reinforcement 31, which is made of metal and is fixed to the protective sleeve 3 by bolts. The end of the reinforcement 31 close to the clearance hole 111 is provided with a plug-in groove 311, and the stirring rod 22 is plugged into the plug-in groove 311, so that during the rotation of the stirring rod 22, the reinforcement 31 is directly applied with force, and then the reinforcement 31 drives the protective sleeve 3 to rotate. The contact area between the reinforcement 31 and the protective sleeve 3 is large, so that the pressure on the protective member is not easy to be too large, and the protective sleeve 3 is not easy to be damaged.

[0037] Since the stirring rod 22 rotates around the axis of the turntable 21 when working, and one end of the protective sleeve 3 is fixed in the feed hopper 11, if the stirring rod 22 directly drives the protective sleeve 3 to rotate, it is easy to cause damage to the protective sleeve 3. Therefore, a rotating sleeve 33 is rotatably connected to the plug-in slot 311 through a bearing, and the rotating sleeve 33 is opened at one end facing the clearance hole 111. The stirring rod 22 is inserted into the rotating sleeve 33, and a gap is left between the side wall of the stirring rod 22 located at the rotating sleeve 33 and the inner wall of the rotating sleeve 33. During the rotation of the stirring rod 22, the stirring rod 22 applies force to the rotating sleeve 33 to drive the end of the protective sleeve 3 away from the feed hopper 11 to rotate, and the rotating sleeve 33 rotates relative to the reinforcement 31, so that the protective sleeve 3 itself is not easy to be twisted.

[0038] In order to make the stirring rod have a better stirring effect on calcium carbonate, the angles formed by one end of adjacent stirring rods 22 arranged on the rotating disk and the vertical plane are different in degree, so that when one stirring rod 22 is stirring the calcium carbonate below, the adjacent stirring rod 22 is used to stir the calcium carbonate located above, so that the stirring rod 22 can stir a larger volume at the same time, making it easier for calcium carbonate to enter the machine body 1.

[0039] like Figure 2 As shown, in order to prevent the fixing part from rotating relative to the protective sleeve 3 when the fixing part is subjected to the pressure applied by the stirring rod 22, two telescopic rods 34 are further provided on the end surface of the reinforcement part 31 close to the clearance hole 111. The two telescopic rods 34 are circumferentially arranged on the reinforcement part 31, and one end of the telescopic rod 34 is ball-jointed with the reinforcement part 31. Two extension blocks are further provided in the clearance hole 111, and the other end of the telescopic rod 34 is ball-jointed with the extension block. The telescopic rod 34 is thereby used to restrict the reinforcement part 31 so that the reinforcement part 31 will not rotate relative to the fixing part.

[0040] The working principle of this embodiment is as follows: after the calcium carbonate powder is introduced into the feed hopper 11, the stirring driving member 23 drives the turntable 21 to rotate, and the stirring rod 22 drives the fixing member to rotate, so that the calcium carbonate powder in the feed hopper 11 is stirred by the protective sleeve 3, and the calcium carbonate powder falls into the machine body 1 under stirring, and then the twin-screw mechanism rotates to extrude the calcium carbonate powder into shape and discharge it from the discharge port 12.

[0041] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A device for preparing calcium carbonate particles for PE breathable membrane, characterized in that: The invention comprises a machine body (1), a feed hopper (11) arranged above the machine body (1), a twin-screw extrusion structure arranged in the machine body (1), and an extrusion drive member for driving the twin-screw extrusion structure to work. An end of the machine body (1) away from the feed hopper (11) is provided with a discharge port (12), and the lower end of the feed hopper (11) is communicated with the inner cavity of the machine body (1); the feed hopper (11) is also provided with a stirring mechanism (2) for pushing the calcium carbonate powder in the feed hopper (11) to move, and the stirring mechanism (2) comprises a plurality of turntables (21) rotatably connected to the feed hopper (11), a stirring rod (22) fixed on the turntable (21), and a stirring drive member (23) for driving the turntable (21) to rotate, the axis of the stirring rod (22) being arranged at an angle with the rotation axis of the turntable (21), and the stirring rod (22) being arranged in the feed hopper (11) and inserted into the calcium carbonate.

2. The calcium carbonate granules preparation device for PE breathable membrane according to claim 1, characterized in that: The inner wall of the feed hopper (11) is provided with a plurality of clearance holes (111) for passing the stirring rod (22). The inner wall of the feed hopper (11) is also provided with a plurality of protective sleeves (3) for closing the clearance holes (111). The protective sleeves (3) are open at one end close to the clearance holes (111), and the stirring rod (22) is passed through the protective sleeves (3).

3. The calcium carbonate granules preparation device for PE breathable membrane according to claim 2, characterized in that: A reinforcing piece (31) is provided at one end of the protective sleeve (3) away from the clearance hole (111); an end of the protective sleeve (3) close to the reinforcing piece (31) is open and fixed on the reinforcing piece (31); an inserting groove (311) is provided at one end of the reinforcing piece (31) close to the clearance hole (111); and an end of the stirring rod (22) away from the rotating disk (21) is inserted into the inserting groove (311).

4. The calcium carbonate granules preparation device for PE breathable membrane according to claim 3, characterized in that: A rotating sleeve (33) is also rotatably connected in the insertion groove (311), and the stirring rod (22) is inserted into the rotating sleeve (33).

5. The calcium carbonate granules preparation device for PE breathable membrane according to claim 4, characterized in that: The end of the stirring rod (22) abuts against the inner wall of the rotating sleeve (33), and a gap is left between the stirring rod (22) and the inner wall of the rotating sleeve (33).

6. The calcium carbonate particle preparation device for PE breathable membrane according to claim 2, characterized in that: A plurality of protrusions (32) are arranged on the outer wall of the protective sleeve (3).

7. The equipment for preparing calcium carbonate particles for PE breathable membrane according to claim 1, characterized in that: The degrees of the angles formed between adjacent stirring rods (22) and the vertical plane are different.

8. The equipment for preparing calcium carbonate particles for PE breathable membrane according to claim 3, characterized in that: A plurality of telescopic rods (34) are provided at the end of the reinforcement member (31) close to the clearance hole (111), one end of the telescopic rod (34) is ball-jointed to the reinforcement member (31), and the other end of the telescopic rod (34) is ball-jointed to the feed hopper (11).

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