Vertical feeding device

Abstract

The vertical feeding device comprises a hopper and a discharging mechanism, the discharging mechanism is arranged below the hopper and comprises a material conveying pipe, a spiral conveyor, a filter element and a negative pressure assembly, the material conveying pipe is connected to the hopper, the spiral conveyor is arranged in the material conveying pipe, the filter element is arranged in the spiral conveyor, and the negative pressure assembly is arranged in the material conveying pipe. The filter element is arranged in the material conveying pipe and surrounds the spiral conveyor, an annular mounting part is arranged on the side wall of the material conveying pipe, an opening surrounding the side wall of the material conveying pipe is formed in the bottom of the mounting part, the negative pressure assembly comprises a negative pressure pipe which is arranged on the side wall of the material conveying pipe and used for being externally connected with negative pressure equipment, and the negative pressure pipe is arranged on the side wall of the material conveying pipe. And the bag expanding pipe is arranged on the mounting part. According to the vertical feeding device, the bag expanding pipe is integrated, air blowing or air suction operation can be carried out on a bag under the condition that other equipment is not used, and the using flexibility is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of transmission equipment, in particular to a vertical feeding device. Background Art

[0002] A vertical feeding system uses a spiral conveyor to transfer materials between the storage location and the target container. Because it can transfer materials from bottom to top and precisely control the feed rate, vertical feeding systems are widely used in the conveying and filling of granular materials. However, additional equipment is required for partial filling operations, for vacuuming the bag before refilling, for vacuuming the bag after filling, or for expanding a compressed bag by blowing air before filling.

[0003] Therefore, in view of the above technical problems, it is necessary to provide an improved vertical feeding device to solve the above problems.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Utility Model Content

[0005] The purpose of the utility model is to provide a vertical feeding device, which can complete the blowing or suction operation of the bag without the help of other equipment and has high flexibility.

[0006] In order to achieve the above-mentioned purpose, the technical solution provided by a specific embodiment of the present invention is as follows:

[0007] The utility model provides a vertical feeding device, comprising a hopper and a discharge mechanism, wherein the discharge mechanism is arranged below the hopper and comprises a feed pipe, a screw conveyor, a filter element and a negative pressure component, the feed pipe is connected to the hopper, the screw conveyor is arranged in the feed pipe, the filter element is arranged in the feed pipe and surrounded by the outside of the screw conveyor, an annular mounting portion is provided on the side wall of the feed pipe, the bottom of the mounting portion is provided with an opening surrounding the side wall of the feed pipe, and the negative pressure component comprises a negative pressure pipe opened on the side wall of the feed pipe and used for externally connecting a negative pressure device, and a bag inflation pipe opened on the mounting portion.

[0008] In one or more embodiments of the present invention, a first control valve is further connected between the bag inflation tube and the mounting portion.

[0009] In one or more embodiments of the present invention, the unloading mechanism further includes a dust removal pipe connected to the mounting portion, and the dust removal pipe is used for externally connecting to a negative pressure device.

[0010] In one or more embodiments of the present invention, a second control valve is further connected between the dust removal pipe and the mounting portion.

[0011] In one or more embodiments of the present invention, the first control valve and / or the second control valve is a pneumatic ball valve.

[0012] In one or more embodiments of the present invention, the dust removal pipe and the bag expansion pipe are arranged on two opposite sides of the material conveying pipe.

[0013] In one or more embodiments of the present invention, a cover plate is provided on the top of the hopper, and a feeding port is opened on the cover plate.

[0014] In one or more embodiments of the present invention, a power source is installed on the cover plate, and the power source is connected to and drives the screw conveyor to rotate.

[0015] In one or more embodiments of the present invention, the cover plate and the hopper are detachably fixed.

[0016] In one or more embodiments of the present invention, the unloading mechanism also includes a telescopic cylinder, a guide rod and a baffle. The telescopic cylinder is fixed to the top of the mounting portion, and the two ends of the guide rod are respectively connected to the telescopic cylinder and the folding tube. The telescopic cylinder is used to drive the baffle to cover or release the unloading port at the bottom of the conveying pipe.

[0017] Compared with the prior art, the vertical feeding device of the utility model is integrated with a bag expansion tube, which can perform blowing or suction operations on the bag without the aid of other equipment, thereby improving flexibility during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a front view of a vertical feeding device in one embodiment of the present utility model;

[0020] Figure 2 It is a side view of a vertical feeding device in one embodiment of the present utility model.

[0021] Description of main reference numerals:

[0022] 100-vertical feeding device, 10-hopper, 11-cover plate, 111-feeding port, 12-power source, 20-discharging mechanism, 21-feeding pipe, 211-installation part, 22-screw conveyor, 23-filter element, 241-negative pressure pipe, 242-bag expansion pipe, 243-first control valve, 25-dust removal pipe, 26-second control valve, 27-telescopic cylinder, 28-guide rod, 29-baffle. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will be combined with the drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0024] like Figure 1 and 2 As shown, the vertical feeding device 100 in one embodiment of the present invention is mainly used for conveying powder with smaller particle size, and includes a hopper 10 and a discharge mechanism 20. The opening of the hopper 10 is a structure with a larger upper portion and a smaller lower portion. The discharge mechanism 20 is arranged below the hopper 10 and includes a feed pipe 21, a screw conveyor 22, a filter element 23 and a negative pressure assembly 24. The feed pipe 21 is connected to the lower opening of the hopper 10, the screw conveyor 22 is arranged in the feed pipe 21, and the filter element 23 is a hollow cylindrical structure, which is arranged in the feed pipe 21 and surrounds the outer periphery of the screw conveyor 22. The feed pipe 21 is also provided with an annular mounting portion 211. The cross-section of the mounting portion 211 is L-shaped, which radially protrudes from the side wall of the feed pipe 21 and extends downward, forming an annular opening between the mounting portion 211 and the side wall of the feed pipe 21. The negative pressure assembly 24 includes a negative pressure tube 241 connected to the side wall of the feed pipe 21, and a bag inflation tube 242 opened on the mounting portion 211. The former is used to connect an external negative pressure device to suck out excess air when conveying powder, while the bag is mounted on the mounting portion 211, and air is blown into the bag through the bag inflation tube 242 to inflate the bag.

[0025] In actual use, the negative pressure pipe 241 creates a pressure difference between the inside and outside of the feed pipe 21 through an external negative pressure device, so as to perform dust removal operations during material transmission and discharge the air between the materials when unloading, making unloading more convenient. After a period of use, the surface of the filter element 23 will be covered with dust, and the dust removal effect will decrease. At this time, the external negative pressure device is reversed to blow air into the inside of the feed pipe 21, blowing off the dust on the surface of the filter element 23 and restoring its dust removal capacity. The vertical feeding device 100 is provided with a mounting portion 211 on the side wall of the feed pipe 21. The mounting portion 211 extends outward from the side wall of the feed pipe 21 and then extends downward, and can be connected to a ton package machine. The bag mouth of the bag to be loaded is sleeved on the outside of the mounting portion 211. A bag expansion pipe 242 is provided on the mounting portion 211. The bag expansion pipe 242 is connected to the inside of the bag and is used to connect an external negative pressure device to blow air into the bag to inflate the bag. Therefore, the vertical feeding device 100 can perform an air blowing operation on the bag without the aid of other equipment, and can blow air into an empty bag that has been emptied of air to facilitate filling.

[0026] Preferably, a first control valve 243 is further provided between the bag inflation tube 242 and the mounting portion 211. The first control valve 243 is used to control the on and off of the bag inflation tube 242. The first control valve 243 is closed when no bag is put on it, and is opened only after the bag is put on the bag inflation tube 242.

[0027] Preferably, the unloading mechanism 20 further includes a dust removal pipe 25 connected to the mounting portion 211. This dust removal pipe 25 is used to connect to an external negative pressure device to create a pressure differential between the inside and outside of the bag, thereby extracting dust from the bag during or after loading, and also discharging excess air from the bag. Therefore, the vertical feeding device 100 of the present invention can perform both continuous inflating and vacuuming operations on the loaded bag, providing greater flexibility.

[0028] Furthermore, a second control valve 26 is provided on the dust removal pipe 25 , and the second control valve 26 can be used to control the on / off of the dust removal pipe 25 .

[0029] In one embodiment, the first control valve 243 and the second control valve 26 can be pneumatic ball valves. In addition to controlling the flow of the pipeline, the suction force can be adjusted by controlling the opening and closing area of the ball valve, further enhancing flexibility. Furthermore, the ball valves are pneumatically controlled, eliminating the need for manual operation and providing enhanced ease of use.

[0030] like Figure 1 As shown, the dust removal pipe 25 and the bag inflation pipe 242 are arranged on opposite sides of the mounting portion 211 so that the external negative pressure device and the bag do not interfere with each other. Of course, the dust removal pipe 25 and the bag inflation pipe 242 can also be arranged at other positions of the conveying pipe 21, and this embodiment is not limited thereto.

[0031] In one embodiment, a cover plate 11 is mounted on the top of the hopper 10. A feeding port 111 is defined on the cover plate 11, through which material enters the hopper. A power source 12 is secured to the cover plate 11, which is connected to and drives the screw conveyor 22. The power source 12 can be a motor or other power device, and this embodiment is not limiting.

[0032] Preferably, to facilitate disassembly, transportation and maintenance, the cover plate 11 and the hopper 10 are detachably fixed, for example, by bolts, buckles or other means, which are not limited in this embodiment.

[0033] In one embodiment, the unloading mechanism 20 also includes a telescopic cylinder 27, a guide rod 28 and a baffle 29. The telescopic cylinder 27 is fixed on the mounting portion 211, and the two ends of the guide rod 28 are respectively connected to the telescopic cylinder 27 and the baffle 29. The baffle 29 is driven by the telescopic cylinder 27 to block or open the unloading port at the bottom of the conveying pipe 21.

[0034] Furthermore, the baffle 29 can be set to a cone shape, and the material discharge port can be partially released by controlling the moving distance of the baffle 29 during operation, thereby controlling the material discharge rate.

[0035] Here, the vertical feeding device 100 in the present invention is further explained in combination with specific usage scenarios.

[0036] Before loading, if the bag needs to be shrunk or expanded, the bag opening can be placed on the bag expansion tube 242, and the negative pressure tube 241 can be activated, or air can be sucked or blown from a device external to the dust removal tube 25 into the feed pipe 21 to shrink or expand the bag. The bag is then placed on the discharge port at the end of the feed pipe 21, and the telescopic cylinder 27 is operated to move the baffle 29 downward. The discharge port is then opened for loading. During the loading process, the discharge speed can be adjusted by adjusting the position of the baffle 29. After loading is complete, the telescopic cylinder 27 is operated to control the baffle 29 to move upward and block the feed pipe 21. When the loaded bag needs to be de-aired, the bag can be placed on the bag expansion tube 242 again to evacuate the air inside before packaging.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0038] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A vertical feeding device, characterized in that: include: hopper; The unloading mechanism is arranged below the hopper and includes a feed pipe, a screw conveyor, a filter element and a negative pressure component. The feed pipe is connected to the hopper, the screw conveyor is arranged in the feed pipe, the filter element is arranged in the feed pipe and surrounded by the screw conveyor, an annular mounting portion is provided on the side wall of the feed pipe, and an opening surrounding the side wall of the feed pipe is provided at the bottom of the mounting portion. The negative pressure component includes a negative pressure pipe opened on the side wall of the feed pipe and used for externally connecting a negative pressure device, and a bag expansion pipe opened on the mounting portion.

2. The vertical feeding device according to claim 1, characterized in that: A first control valve is also connected between the bag inflation tube and the mounting portion.

3. The vertical feeding device according to claim 2, characterized in that: The unloading mechanism also includes a dust removal pipe connected to the mounting portion, and the dust removal pipe is used for externally connecting to a negative pressure device.

4. The vertical feeding device according to claim 3, characterized in that: A second control valve is also connected between the dust removal pipe and the mounting portion.

5. The vertical feeding device according to claim 4, characterized in that: The first control valve and / or the second control valve is a pneumatic ball valve.

6. The vertical feeding device according to claim 3, characterized in that: The dust removal pipe and the bag expansion pipe are arranged on two opposite sides of the material conveying pipe.

7. The vertical feeding device according to claim 1, characterized in that: A cover plate is provided on the top of the hopper, and a feeding port is opened on the cover plate.

8. The vertical feeding device according to claim 7, characterized in that: A power source is installed on the cover plate, and the power source is connected to and drives the screw conveyor to rotate.

9. The vertical feeding device according to claim 8, characterized in that: The cover plate and the hopper are detachably fixed.

10. The vertical feeding device according to claim 1, characterized in that: The unloading mechanism also includes a telescopic cylinder, a guide rod and a baffle. The telescopic cylinder is fixed to the top of the mounting portion. The two ends of the guide rod are respectively connected to the telescopic cylinder and the folding tube. The telescopic cylinder is used to drive the baffle to cover or release the unloading port at the bottom of the conveying pipe.

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