A screw powder breaking device

Abstract

The utility model relates to a kind of screw broken powder devices, including material bucket, screw and screw sleeve, material bucket bottom is equipped with material bucket export, screw sleeve is located below material bucket export, material bucket export, screw sleeve and the contour of screw are circular and same installation axial center, screw is located in material bucket and from material bucket export, the outgoing portion of screw is sleeved in screw sleeve interior, the lower end of screw is equipped with screw hole, and the screw hole connects tray screw, the lower portion of screw is equipped with tray, tray is the circular tray of recessed groove shape, the center of tray is equipped with tray inner hole, tray is sleeved on tray screw by tray inner hole, and tray can be adjusted up and down along tray screw;Compared with prior art, the utility model can avoid "clamping material" in sealing interval, causing packaging bag to leak, produce unqualified product, solve the problem that filling material flows out from screw and screw sleeve during intermittent period of screw metering device in filling good flowability powder, and "clamp material" in sealing causes packaging bag to leak.

Description

[Technical Field]

[0001] This utility model relates to the field of screw filling technology, and in particular to a device that can disconnect free-flowing powder during the metering interval when using screw filling, specifically a screw powder disconnection device. [Background Technology]

[0002] In the production of flexible packaging bags using film, the screw metering method is widely used for various powder materials because the number of screw rotations is essentially linearly related to the filling amount of material. In the production of film packaging bags, after the metered material enters the bag, it generally undergoes a final horizontal seal to seal the filling material within the bag. This requires that the materials in the first and second bags be metered separately, and that no material be "stuck" in the seal during the final horizontal sealing process; otherwise, air leakage may occur, resulting in substandard packaging bags.

[0003] When using screw metering, a certain gap must be maintained between the screw and the screw sleeve. For general powder materials, relying on the electrostatic force, polarization adsorption force, and friction of the powder itself, a separator is sometimes used at the lower end of the screw. This ensures that the powder material will not fall during the interval between fillings (or at most there will be a small amount of dust, but it will not affect the sealing of the packaging bag). However, there are some free-flowing powder materials. Even with the above-mentioned separators and other measures, it is impossible to prevent the filling material from flowing out of the screw and screw sleeve during the screw filling interval. This can cause "material jamming" when the packaging bag is sealed laterally, resulting in air leakage. [Utility Model Content]

[0004] The purpose of this invention is to address the aforementioned shortcomings by providing a screw powder-cutting device that solves the problem of material flowing out of the screw and screw sleeve during the intermittent filling of free-flowing powder, causing "material trapping" in the sealing process and resulting in air leakage in the packaging bag.

[0005] To achieve the above objectives, a screw powder-cutting device is designed, comprising a material hopper 101, a screw 100, and a screw sleeve 103. The material hopper 101 has a material hopper outlet 102 at its bottom, and the screw sleeve 103 is located below the material hopper outlet 102. The material hopper outlet 102, the screw sleeve 103, and the screw 100 are all circular in outline and share the same mounting axis. The screw 100 is disposed inside the material hopper 101 and extends out from the material hopper outlet 102. The protruding portion of the screw 100 is fitted inside the screw sleeve 103. The lower end of the screw 100 has a threaded hole, which connects to a tray screw 107. A tray 106 is provided at the lower part of the screw 100. The tray 106 is a circular tray with a groove shape. A tray inner hole 303 is provided at the center of the tray 106. The tray 106 is fitted onto the tray screw 107 through the tray inner hole 303, and the tray 106 can be adjusted up and down along the tray screw 107.

[0006] Furthermore, several washers 200 are fitted onto the tray screw 107 between the lower end of the screw 100 and the tray 106. The center of each washer 200 is provided with a smooth inner hole, and the inner hole 303 of the tray is also a smooth inner hole. The tray screw 107 fastens the tray 106 and the several washers 200 to the lower end of the screw 100, and the distance between the tray 106 and the lower end of the screw 100 is adjusted by the number of washers 200.

[0007] Furthermore, a hexagonal nut 210 is fitted onto the tray screw 107 between the lower end of the screw 100 and the tray 106, and a hexagonal nut 211 is fitted onto the tray screw 107 between the lower end of the tray 106 and the tray screw 107. The inner holes of both the hexagonal nut 210 and the hexagonal nut 211 are threaded holes, and they are threadedly connected to the tray screw 107 through the threaded holes. The hexagonal nut 210 is used to lock the tray screw 107 at the lower end of the screw 100. The inner hole 303 of the tray is a threaded inner hole and is threadedly connected to the tray screw 107. The tray 106 moves up and down as the threads of the tray screw 107 rotate. The hexagonal nut 211 is used to lock the tray 106 onto the tray screw 107.

[0008] Furthermore, the outer side of the tray 106 is a circular outer wall 300, and the upper end of the tray 106 is an upper ring surface 301, with the inner diameter of the upper ring surface 301 being larger than the inner diameter of its bottom. The inner diameter of the upper ring surface 301 and the inner diameter of its bottom form the annular inner sidewall of the tray 106. The annular inner sidewall of the tray 106 is an inner inclined surface 302, which is an upward and outward open type, and the angle with the horizontal plane is 20° to 40°. The inner diameter of the upper ring surface 301 is larger than the outer diameter of the screw sleeve 103, so that when the screw is stationary, it has a certain centripetal separating force on the metered material, and when the screw rotates, it ensures the smooth flow of the metered material.

[0009] Furthermore, the inner inclined surface 302 of the tray 106 forms an angle of 30° with the horizontal plane, thereby obtaining better centripetal separation force and smooth material flow.

[0010] Furthermore, the circular end of the tray screw 107 is provided with a mounting surface 350, which is arranged in parallel opposite directions and is used to facilitate the installation and removal of the tray screw 107.

[0011] Furthermore, an end sleeve 104 is provided at the lower end of the screw sleeve 103 and on the outer side of the tray 106. The end sleeve 104 is cylindrical at the top and conical at the bottom. The inner diameter of the upper end of the end sleeve 104 is larger than the outer diameter of the screw sleeve 103, and the inner diameter of the lower end of the end sleeve 104 is not larger than the inner diameter of the screw sleeve 103. This ensures that the metered material falls evenly along the transverse circumferential surface and that the filling material can flow smoothly.

[0012] Furthermore, at least three threaded holes are evenly provided on the upper part of the end sleeve 104 along the outer circumference, and the threaded holes are threadedly connected to the fixing screw 105. A groove 250 is provided on the outer side of the lower end of the screw sleeve 103, and the fixing screw 105 is fixed in the groove 250, thereby making the structure more stable and reliable.

[0013] Compared with existing technologies, this invention addresses the problem of free-flowing powder materials failing to separate during the filling interval (i.e., during sealing), causing powder to become trapped in the packaging bag and lead to air leakage. This invention features a screw powder-cutting device. For free-flowing powder materials, a tray with an inner bevel and a diameter larger than the screw sleeve is installed at the lower end of the screw. By adjusting the tray up and down in different ways, the falling material is effectively interrupted between the two filling intervals, preventing material from becoming trapped in the sealing area and causing air leakage and defective products. In summary, this invention solves the problem of filling material flowing out of the screw and screw sleeve during the filling interval of free-flowing powders, causing material to become trapped in the sealing area and leading to air leakage in the packaging bag. It is worthy of widespread application. [Image Description]

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 1 ;

[0015] Figure 2a This is a structural schematic diagram of Embodiment 1 of the present invention. Figure 1 ;

[0016] Figure 2b This is a second structural schematic diagram of Embodiment 1 of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of this utility model;

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of this utility model (II).

[0019] Figure 5 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 3 ;

[0020] Figure 6 This is a schematic diagram of the structure of the tray of this utility model;

[0021] Figure 7 This is a schematic diagram of the structure of the tray screw of this utility model;

[0022] In the diagram: 100, Screw; 101, Material bucket; 102, Material bucket outlet; 103, Screw sleeve; 104, End sleeve; 105, Fixing screw; 106, Tray; 107, Tray screw; 200, Washer; 210, Hex nut one; 211, Hex nut two; 250, Groove; 300, Outer circular wall; 301, Upper ring surface; 302, Inner inclined surface; 303, Tray inner hole; 350, Mounting surface. [Detailed Implementation]

[0023] The present invention will be further described below with reference to the accompanying drawings:

[0024] As attached Figure 1 As shown, this utility model provides a screw powder-cutting device, including a material tank 101, a screw 100, and a screw sleeve 103. A material tank outlet 102 is provided at the bottom of the material tank 101. The screw sleeve 103 is located below the material tank outlet 102. The material tank outlet 102, the screw sleeve 103, and the screw 100 are all circular in outline and share the same mounting axis. The screw 100 is disposed inside the material tank 101 and extends out from the material tank outlet 102. The protruding portion of the screw 100 is fitted inside the screw sleeve 103. The lower end of the screw 100 is flush with or slightly higher than the lower end of the screw sleeve 103. The lower end of the screw 100 is provided with a threaded hole, which is connected to the tray screw 107. The lower part of the screw 100 is provided with a groove-shaped circular tray 106. The tray 106 can effectively isolate the material in the front and rear bags during the interval between two fillings, and will not fall into the horizontal seal of the packaging bag. The center of the tray 106 is provided with a tray inner hole 303. The tray 106 is sleeved on the tray screw 107 through the tray inner hole 303, and the tray 106 can be adjusted up and down along the tray screw 107. By adjusting the tray 106 up and down, different filling speeds of the screw can be met, thereby ensuring that the material with good flowability falls smoothly.

[0025] As attached Figure 2a and attached Figure 2bAs shown, this is an embodiment of the up-and-down adjustment of the tray 106. Several washers 200 are fitted onto the tray screw 107 between the lower end of the screw 100 and the tray 106. Each washer 200 has a smooth inner hole at its center, and the tray's inner hole 303 is also a smooth inner hole. The tray screw 107 secures the tray 106 and the washers 200 to the lower end of the screw 100. The distance between the tray 106 and the lower end of the screw 100 is adjusted by the number of washers 200. In this method, the distance between the tray 106 and the lower end of the screw 100 is not continuously adjustable, but the structure is simple, stable, and reliable. This method is used when the machine is used for stable packaging.

[0026] As attached Figure 3 As shown, this is a second embodiment of the up-and-down adjustment of the tray 106. A hexagonal nut 210 is fitted onto the tray screw 107 between the lower end of the screw 100 and the tray 106. A hexagonal nut 211 is fitted onto the tray screw 107 between the tray 106 and the lower end of the tray screw 107. Both hexagonal nuts 210 and 211 have threaded inner holes and are threadedly connected to the tray screw 107. The hexagonal nut 210 is used to lock the tray screw 107 onto the lower end of the screw 100. The inner hole 303 of the tray is also threaded and threadedly connected to the tray screw 107. The tray 106 can move up and down as the threads of the tray screw 107 rotate. The hexagonal nut 211 is used to lock the tray 106 onto the tray screw 107. In this method, the distance between the tray 106 and the lower end of the screw 100 is continuously adjustable, with a wide range of applications, meeting the needs of various situations.

[0027] As attached Figure 1 To be continued Figure 4 and appendix Figure 6 As shown, the outer side of the tray 106 is a circular outer wall 300, and the upper part of the tray 106 is an upper annular surface 301, with the inner diameter of the upper annular surface 301 being larger than the inner diameter of its bottom. The inner diameter of the upper annular surface 301 and the inner diameter of its bottom form the annular inner sidewall of the tray 106. The annular inner sidewall of the tray 106 is an inner inclined surface 302, which is an upward and outward open type, with an angle of 20° to 40° with the horizontal plane, preferably 30°. The inner diameter of the upper annular surface 301 is larger than the outer diameter of the screw sleeve 103. By setting the inner inclined surface 302 to be less than 45°, the screw has a certain centripetal separating force on the metered material when it is stationary, while ensuring the smooth flow of the metered material when the screw rotates.

[0028] As attached Figure 1 Appendix Figure 4 and appendix Figure 5As shown, an end sleeve 104 is provided at the lower end of the screw sleeve 103 and on the outer side of the tray 106. The end sleeve 104 is cylindrical at the top and tapered at the bottom. The inner diameter of the upper end of the end sleeve 104 is larger than the outer diameter of the screw sleeve 103, and the lower end of the end sleeve 104 is approximately equal to or slightly smaller than the inner diameter of the screw sleeve 103. At least three threaded holes are evenly provided along the circumference of the upper outer side of the end sleeve 104, or four threaded holes, and these threaded holes are threadedly connected to the fixing screw 105. A groove 250 is provided on the lower outer side of the screw sleeve 103, and the fixing screw 105 is fixed in the groove 250. In this way, during on-site installation, it can be fully ensured that the end sleeve 104 and the screw sleeve 103 are on the same axis, that is, the gap between the end sleeve 104 and the screw sleeve 103 is the same when viewed from the transverse circumference, thereby ensuring that the metered material falls evenly along the transverse circumferential surface and the filling material flows smoothly.

[0029] As attached Figure 7 As shown, the circular end of the tray screw 107 is provided with a mounting surface 350, which is arranged in parallel opposite directions, thereby facilitating the installation and removal of the tray screw 107.

[0030] The screw powder-cutting device described in this utility model can solve the problem that during the filling interval of the screw metering device, a small amount of free-flowing powder material will continuously fall from between the screw and the screw sleeve, causing air leakage in the packaging bag. It avoids free-flowing powder from entering the sealing area of ​​the packaging bag, causing poor sealing due to material clamping and resulting in air leakage, thus making the packaged bag products unqualified.

[0031] The contents not described in detail in this specification are existing technologies known to those skilled in the art. The standard parts used can be purchased from the market, and the irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the circuit connection adopts conventional connection methods in the existing technology, which will not be described in detail here.

[0032] This utility model is not limited to the above-described embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of this utility model shall be considered equivalent substitutions and shall be included within the protection scope of this utility model.

Claims

1. A screw powder-cutting device, comprising a material hopper (101), a screw (100), and a screw sleeve (103), wherein a material hopper outlet (102) is provided at the bottom of the material hopper (101), and the screw sleeve (103) is located below the material hopper outlet (102). The material hopper outlet (102), the screw sleeve (103), and the screw (100) are all circular in outline and share the same mounting axis. The screw (100) is disposed inside the material hopper (101) and extends out from the material hopper outlet (102). The protruding portion of the screw (100) is sleeved inside the screw sleeve (103), characterized in that: The lower end of the screw (100) is provided with a threaded hole, and the threaded hole is connected to the tray screw (107). The lower part of the screw (100) is provided with a tray (106), which is a circular tray with a groove. The center of the tray (106) is provided with a tray inner hole (303). The tray (106) is sleeved on the tray screw (107) through the tray inner hole (303), and the tray (106) can be adjusted up and down along the tray screw (107).

2. The screw powder cutting device as described in claim 1, characterized in that: Several washers (200) are fitted onto the tray screw (107) between the lower end of the screw (100) and the tray (106). The center of each washer (200) is provided with a smooth inner hole. The inner hole (303) of the tray is also a smooth inner hole. The tray screw (107) fastens the tray (106) and several washers (200) to the lower end of the screw (100), and the distance between the tray (106) and the lower end of the screw (100) is adjusted by the number of washers (200).

3. The screw powder cutting device as described in claim 1, characterized in that: A hexagonal nut (210) is fitted onto the tray screw (107) between the lower end of the screw (100) and the tray (106). A hexagonal nut (211) is fitted onto the tray screw (107) between the lower end of the tray (106) and the tray screw (107). The inner holes of the hexagonal nut (210) and the hexagonal nut (211) are threaded holes and are threaded to the tray screw (107) through the threaded holes. The hexagonal nut (210) is used to lock the tray screw (107) onto the lower end of the screw (100). The inner hole (303) of the tray is a threaded inner hole and is threaded to the tray screw (107). The tray (106) moves up and down as the threads of the tray screw (107) rotate. The hexagonal nut (211) is used to lock the tray (106) onto the tray screw (107).

4. The screw powder-cutting device as described in claim 1, 2, or 3, characterized in that: The outer side of the tray (106) is a circular outer wall (300), the upper end of the tray (106) is an upper ring surface (301), and the inner diameter of the upper ring surface (301) is larger than the inner diameter of its bottom. The inner diameter of the upper ring surface (301) and the inner diameter of its bottom form the annular inner sidewall of the tray (106). The annular inner sidewall of the tray (106) is an inner inclined surface (302). The inner inclined surface (302) is an open type facing upward and outward, and the angle with the horizontal plane is 20° to 40°. The inner diameter of the upper ring surface (301) is larger than the outer diameter of the screw sleeve (103).

5. The screw powder cutting device as described in claim 4, characterized in that: The inner inclined surface (302) of the tray (106) forms an angle of 30° with the horizontal plane.

6. The screw powder cutting device as described in claim 1, 2 or 3, characterized in that: The tray screw (107) has a mounting surface (350) at its annular end. The mounting surfaces (350) are arranged in parallel opposite directions and are used to facilitate the assembly and disassembly of the tray screw (107).

7. The screw powder cutting device as described in claim 1, 2 or 3, characterized in that: An end sleeve (104) is provided at the lower end of the screw sleeve (103) and on the outer side of the tray (106). The end sleeve (104) is cylindrical at the top and tapered at the bottom. The inner diameter of the upper end of the end sleeve (104) is larger than the outer diameter of the screw sleeve (103), and the inner diameter of the lower end of the end sleeve (104) is not larger than the inner diameter of the screw sleeve (103).

8. The screw powder cutting device as described in claim 7, characterized in that: The upper part of the end sleeve (104) is provided with at least three threaded holes evenly arranged along the outer circumference, and the threaded holes are threadedly connected to the fixing screw (105). The lower end of the screw sleeve (103) is provided with a groove (250), and the fixing screw (105) is fixed in the groove (250).

Images