Feeding hopper for chemical fertilizer packaging

Abstract

The utility model provides a feed hopper for chemical fertilizer packaging, which comprises a hopper body, the bottom end of the hopper body is provided with a feed port, the feed port is provided with two opposite bag clamping components, the two bag clamping components are matched to clamp and fix a packaging bag on the feed port, the feed port comprises an outer shell and an inner shell, the two ends of the outer shell and the two ends of the inner shell are connected with each other, and the outer shell is provided with an opening. An air inlet cavity is formed between the outer shell and the inner shell, air inlet holes communicated with the air inlet cavity are formed in the outer shell and the bottom end of the feeding port, an air outlet connector communicated with the air inlet cavity is further formed in the outer shell, and the air outlet connector is used for being connected with external air suction equipment. The bag clamping assembly comprises a guide frame fixed to the feeding port, a guide groove is formed in the guide frame, the guide groove is connected with a support, the support is connected with a clamping plate, and the support is further connected with a bag clamping driving mechanism. Flying dust generated in the packaging process is sucked through cooperation of the air outlet connector, the air inlet cavity and the air inlet holes, and dust dissipation in the packaging process is effectively reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of fertilizer packaging equipment, and specifically relates to a feeding hopper for fertilizer packaging. Background Technology

[0002] After fertilizer production, it is generally packaged in bags. During packaging, fertilizer is filled into the bags via a feeding hopper. A bag-clamping mechanism is installed at the hopper's inlet to secure the bags. Existing clamping mechanisms primarily use two clamps that match the shape of the hopper's outer wall to hold the bags. During feeding, workers first place the bag opening over the hopper's inlet, then control the clamping mechanism to tighten the bag for feeding. After feeding, the clamping mechanism is opened. However, because the existing clamps are small, they cannot clamp the entire bag opening; only a portion is clamped at the feeding inlet. Therefore, during feeding, the open portion of the bag opening releases a large amount of fertilizer dust, which is highly polluting and irritating. Since workers need to stand beside the feeding hopper throughout the process, this dust can cause serious harm to their health, lead to severe air pollution in the production area, and increase wear and tear on other equipment. Utility Model Content

[0003] To overcome the shortcomings and problems of existing technologies and reduce dust generation during fertilizer packaging, this utility model provides a feeding hopper for fertilizer packaging.

[0004] This utility model is achieved through the following technical solution:

[0005] A fertilizer packaging hopper includes a hopper body with a feeding port at the bottom. Two opposing bag clamping assemblies are provided on the feeding port, which cooperate to clamp the packaging bag onto the feeding port. The feeding port includes an outer shell and an inner shell connected at both ends, with an air inlet cavity between the outer shell and the inner shell. Air inlet holes communicating with the air inlet cavity are provided on the outer shell and at the bottom of the feeding port. An air outlet interface communicating with the air inlet cavity is also provided on the outer shell, used to connect to an external air suction device. The bag clamping assembly includes a guide frame fixed to the feeding port, a guide groove on the guide frame, a support connected to the guide groove, a clamping plate connected to the support, and a bag clamping drive mechanism connected to the support.

[0006] One end of the guide frame is fixed to the outer wall of the feeding port, and the other end is inclined downward.

[0007] The bracket is an L-shaped bracket with a guide rod at the top. The side end of the bracket is connected to the clamping plate. The guide rod slides in the guide groove and is connected to the bag clamping drive mechanism.

[0008] The bag clamping drive mechanism includes a drive cylinder, the cylinder body of which is hinged to the bucket body, and the drive rod of the drive cylinder is connected to the guide rod.

[0009] The clamping plate includes an arc-shaped segment that matches the outer wall structure of the outer shell, and straight segments are provided at both ends of the arc-shaped segment.

[0010] The upper part of the outer casing is a square segment, and the lower part is a circular segment. The air inlet is located on the circular segment, and the air outlet is located on the square segment.

[0011] The two bag clamping assemblies are respectively connected to the two opposite sides of the square segment.

[0012] The beneficial effects of this utility model are as follows:

[0013] This invention connects to an external suction device via an air outlet. The external suction device creates negative pressure within the air intake cavity, drawing air in through the air inlet. During packaging, when the operator places the bag over the feeding port, the air inlet automatically holds the bag in place, eliminating the need for manual handling and waiting for the clamping mechanism. Simultaneously, the air inlet also captures dust generated during packaging, preventing dust from escaping.

[0014] Existing clamping devices only have curved sections in their clamping plates, while the clamping plates in this invention include both curved and straight sections, providing a larger clamping area and greater friction during clamping. During bag clamping operation, the clamping plates of the two sets of clamping assemblies approach each other. The curved sections of the two clamping plates secure a portion of the bag opening to the outer wall of the feeding port, while the straight sections of the two clamping plates move closer together, clamping and sealing the remaining portion of the bag opening, effectively preventing dust escape.

[0015] In existing equipment, the clamps are hinged to both sides of the feeding port, resulting in a narrow gap between the clamps and the feeding port, making bagging operations very inconvenient. This invention utilizes a guide frame and a support to limit the movement trajectory of the clamps, allowing for a larger spatial distance between the clamps and the feeding port when the bag is not clamped, thus facilitating bagging operations. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the bag clamping state of this utility model;

[0018] Figure 3 This is a schematic diagram of the bag clamping assembly structure of this utility model;

[0019] Figure 4 This is a cross-sectional view of the feeding port structure of this utility model.

[0020] In the diagram: 100-hopper body, 200-feeding port, 210-outer shell, 211-circular section, 212-square section, 213-air inlet, 214-air outlet, 220-inner shell, 230-air inlet cavity, 300-bag clamping assembly, 310-guide frame, 311-guide groove, 320-support, 321-guide rod, 330-clamping plate, 331-arc section, 332-straight section, 400-bag clamping drive mechanism, 410-drive cylinder. Detailed Implementation

[0021] To facilitate understanding by those skilled in the art, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] like Figure 1 , 3 As shown in Figure 4, a fertilizer packaging hopper includes a hopper body 100. The bottom end of the hopper body 100 has a feeding port 200 for feeding fertilizer into a packaging bag. The feeding port 200 has two opposing bag-clamping assemblies 300, which work together to clamp the packaging bag onto the feeding port 200. The feeding port 200 includes an outer shell 210 and an inner shell 220 connected at both ends. An air inlet cavity 230 is provided between the outer shell 210 and the inner shell 220. The outer shell 210 and the bottom end of the feeding port 200 both have air inlet holes 213 communicating with the air inlet cavity 230. The outer shell 210 also has an air outlet 214 communicating with the air inlet cavity 230, which is used to connect to an external air intake device. When the air outlet 214 is connected to an external suction device, the external suction device is activated, and a negative pressure is generated in the air intake cavity 230, thereby driving air into the air intake hole 213, which can then achieve the dust suction effect.

[0023] During the feeding process, workers need to first place the packaging bag onto the feeding port 200. Existing equipment requires manual handling of the packaging bag while waiting for the clamping mechanism to tighten it, and then releasing the hand, which poses a certain degree of danger. In this embodiment, the air inlet 213 on the outer shell 210 can absorb the packaging bag after it has been placed, and then the clamping assembly 300 tightens it, eliminating the need for manual handling and significantly improving safety. Simultaneously, during the bag removal process after packaging, the bag opening returns to an open state, and the air inlet 213 on the outer shell 210 can suck up dust from the bag opening, preventing dust from escaping. The upper part of the outer shell 210 is a square segment 212, and the lower part is a circular segment 211. The air inlet 213 is located on the circular segment 211, and the air outlet 214 is located on the square segment 212. The square segment 212 facilitates the installation and fixation of the bag clamping assembly 300, while the round segment 211 facilitates the fitting of the packaging bag. The square segment 212 and the round segment 211 can prevent the problem of operation interference.

[0024] like Figure 1 , 2 As shown in Figure 3, the two bag clamping assemblies 300 are respectively connected to two opposite sides of the square segment 212. Each bag clamping assembly 300 includes a guide frame 310 fixed to the feeding port 200. One end of the guide frame 310 is fixed to the outer wall of the feeding port 200, and the other end is inclined downwards. The guide frame 310 is provided with a guide groove 311, and a bracket 320 is connected to the guide groove 311. The bracket 320 is connected to a clamping plate 330. The clamping plate 330 can be switched between a clamping state and an open state by the guidance of the guide frame 310. The bracket 320 is an L-shaped bracket 320. A guide rod 321 is provided at the top of the bracket 320. The side end of the bracket 320 is connected to the clamping plate 330. The guide rod 321 slides within the guide groove 311. When the guide rod 321 slides towards the lower end of the guide groove 311, it will drive the clamping plate 330 away from the feeding port 200 through the bracket 320, so as to facilitate the bagging operation of the feeding port 200. When the guide rod 321 moves towards the end of the guide groove 311 near the feeding port 200, the clamping plate 330 moves closer to the feeding port 200 until it is clamped onto the feeding port 200, at which point it is in the bag-clamping state. It should be noted that in existing equipment, the clamping plate is directly hinged to both sides of the feeding port, and the gap between the clamping plate and the feeding port is narrow, making the bag-fitting operation very inconvenient. In this embodiment, while using the guide frame 310 and the bracket 320 to support the clamping plate 330, the movement trajectory of the clamping plate 330 is changed, so that the clamping plate 330 has a larger space gap with the feeding port 200 in the open state, which facilitates the bag-fitting operation.

[0025] like Figure 1 , 2As shown, the clamping plate 330 includes an arc-shaped segment 331 that matches the outer wall structure of the outer shell 210, and straight segments 332 are provided at both ends of the arc-shaped segment 331. Existing equipment clamping plates 330 only have an arc-shaped segment 331, while the clamping plate 330 in this embodiment includes both an arc-shaped segment 331 and a straight segment 332, providing a larger clamping area and greater friction during clamping. During bag clamping operation, the clamping plates 330 of the two sets of bag clamping assemblies 300 approach each other. The arc-shaped segments 331 of the two clamping plates 330 clamp a portion of the bag opening to the outer wall of the feeding port 200, while the straight segments 332 of the two clamping plates 330 approach each other, clamping and sealing the remaining portion of the bag opening, effectively preventing dust escape. The bracket 320 is also connected to a bag clamping drive mechanism 400, which includes a drive cylinder 410. The cylinder body of the drive cylinder 410 is hinged to the bucket body 100. The drive rod of the drive cylinder 410 is connected to the guide rod 321. The drive cylinder 410 drives the guide rod 321 to slide in the guide groove 311, thereby driving the clamping plate 330 to move and realize the bag clamping work.

[0026] The above embodiments are preferred implementations of this utility model and are not intended to limit this utility model. Any obvious substitutions are within the protection scope of this utility model without departing from its inventive concept.

Claims

1. A fertilizer packaging hopper, comprising a hopper body (100), characterized in that: The bottom end of the hopper (100) is provided with a feeding port (200), and two oppositely arranged bag clamping assemblies (300) are provided on the feeding port (200). The two bag clamping assemblies (300) cooperate to clamp the packaging bag on the feeding port (200). The feeding port (200) includes an outer shell (210) and an inner shell (220) connected to each other at both ends. An air inlet cavity (230) is provided between the outer shell (210) and the inner shell (220). The outer shell (210) and the bottom end of the feeding port (200) are both provided with air inlets (230). The outer shell (210) is provided with an air inlet (213) that is connected to the air inlet cavity (230), and an air outlet (214) that is connected to the air inlet cavity (230). The air outlet (214) is used to connect to an external air suction device. The bag clamping assembly (300) includes a guide frame (310) fixed on the feeding port (200). The guide frame (310) is provided with a guide groove (311). The guide groove (311) is connected to a bracket (320). The bracket (320) is connected to a clamping plate (330). The bracket (320) is also connected to a bag clamping drive mechanism (400).

2. The fertilizer packaging hopper according to claim 1, characterized in that: One end of the guide frame (310) is fixed to the outer wall of the feeding port (200), and the other end is inclined downward.

3. The fertilizer packaging hopper according to claim 2, characterized in that: The bracket (320) is an L-shaped bracket (320). The top of the bracket (320) is provided with a guide rod (321). The side end of the bracket (320) is connected to the clamping plate (330). The guide rod (321) slides in the guide groove (311) and is connected to the bag clamping drive mechanism (400).

4. The fertilizer packaging hopper according to claim 3, characterized in that: The bag clamping drive mechanism (400) includes a drive cylinder (410), the cylinder body of which is hinged to the bucket body (100), and the drive rod of the drive cylinder (410) is connected to the guide rod (321).

5. The fertilizer packaging hopper according to claim 4, characterized in that: The clamp (330) includes an arc-shaped segment (331) that matches the outer wall structure of the outer shell (210), and straight segments (332) are provided at both ends of the arc-shaped segment (331).

6. A fertilizer packaging hopper according to any one of claims 1-5, characterized in that: The upper part of the outer shell (210) is a square segment (212), and the lower part is a circular segment (211). The air inlet (213) is located on the circular segment (211), and the air outlet (214) is located on the square segment (212).

7. A fertilizer packaging hopper according to claim 6, characterized in that: The two bag clamping assemblies (300) are respectively connected to two opposite sides of the square segment (212).

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