A filling mechanism with internal and external dust suction, bag return and sealing

Abstract

The utility model discloses a filling mechanism with internal and external dust suction and bag withdrawal sealing, comprising a fixing frame and a filling gate. When the gate is closed, the left and right gate plates are staggered and closed at the lower ends to form a cone. A material guiding square cylinder is arranged in the filling gate. The lower opening of the material guiding square cylinder is extended downward relative to a group of cylinder plates on both sides to form an extended baffle. The extended baffle is conical and coincides with the closed cone of the left and right gate plates. The closed cone is provided with bag opening blocking upright plates on the outer sides of the two extended baffles opposite to the material guiding cylinder respectively. Bag guiding and bag withdrawal sealing devices are arranged on the outer sides of the bag opening blocking upright plates. A closed space is formed between the outer sides around the material guiding cylinder and the inner sides of the left and right gate plates and the gaps between the bag opening blocking upright plates on both sides. At least two groups of four air suction and dust suction ports are symmetrically arranged around the filling port on the top plate of the fixing frame. The four air suction and dust suction ports are respectively connected with the closed space, forming a closed space around the material guiding cylinder without dead angles for dust suction.

Description

Technical Field

[0001] The utility model relates to a filling mechanism with internal and external dust suction, bag withdrawal and sealing functions. Background Art

[0002] Automatic bulk quantitative packaging equipment will generate dust pollution during the filling process. There are two main reasons for dust pollution: 1. When the material is discharged into the hopper, the gap between the "left material door" and the "right material door" and between the "material door" and the "material guide barrel" will emit dust even though the material does not leak; 2. Since the interface between the filling port and the material bag cannot be sealed, the material drops rapidly during filling and discharge, causing the air in the bag to be compressed rapidly and rises rapidly, carrying the material dust out of the gap at the bag mouth. In addition, if the bag mouth cannot be quickly closed when the bag is withdrawn after filling, dust will be emitted after the bag mouth is separated from the filling port. Therefore, the emitted dust will pollute the environment and cause certain damage to the equipment and operators. Summary of the invention

[0003] The utility model aims to provide a filling mechanism with internal and external dust suction, bag withdrawal and sealing. By improving the equipment structure, the problem of dust leakage caused by the filling port and the material bag not being able to be sealed and the dust emission after the bag mouth separates from the filling port when the bag is withdrawn after filling is solved.

[0004] In order to achieve the above purpose, the technical solution of the utility model is:

[0005] A filling mechanism with internal and external dust suction, bag return and sealing, including a fixing frame and a filling gate, the filling gate is installed on the fixing frame, a filling interface is arranged on the top plate of the fixing frame, the filling interface is used to connect the conveyor through a sealed pipeline, the filling gate is composed of left and right gate plates, the gate plates are in a right-angle "U" shape, when the gate is closed, the left and right gate plates are staggered and closed at the lower end to form a cone, wherein: a material guide square cylinder is arranged in the filling gate, the upper opening of the material guide square cylinder is connected to the filling interface The filling interface is buckled, and one of the two groups of opposite side barrel plates at the lower opening of the material guiding square barrel is extended downward to form an extended baffle, which is conical and matches the closed conical shape of the left and right gate plates. The closed conical left and right gate plates are buckled and sealed with the conical extended baffles of the material guiding square barrel. Bag opening blocking vertical plates are respectively arranged on the outer sides of the two opposite extended baffles of the material guiding barrel. The width of the bag opening blocking vertical plates is to still cover the filling gate when the filling gate is opened to support the bag opening. The side ends of the left and right gate plates and the upper ends of the bag opening blocking upright plates are connected and fixed to the top plate of the fixing frame, and bag opening guiding grooves are respectively arranged on the bag opening blocking upright plates on both sides, and bag leading and bag retreating sealing devices are respectively arranged on the outer sides of the bag opening blocking upright plates, and the bag leading and bag retreating sealing devices are respectively provided with swingable guiding rods, and the guiding rods are used to guide the bag opening to be inserted from the guiding grooves, and to separate the filling bag opening from the filling gate and close the bag opening. After bagging, the outer sides around the guide cylinder and the surrounding gaps between the inner sides of the left and right gate plates and the bag opening blocking upright plates on both sides form a closed space, and at least two groups of four exhaust dust suction ports are symmetrically arranged around the filling port on the top plate of the fixing frame, wherein two opposite exhaust dust suction ports in one group are respectively communicated with the closed space between the guide cylinder and the inner sides of the left and right gate plates, and the other group of opposite exhaust dust suction ports are respectively communicated with the closed space between the guide cylinder and the bag opening blocking upright plates, forming a closed space around the guide cylinder without dead angles for dust suction.

[0006] A further solution is that the four air exhaust and dust suction ports are connected to the closed space through closed channels respectively.

[0007] A further solution is that the bag opening guide slot is composed of two guide slots, and the two guide slots are tapered outwardly and upwardly respectively, corresponding to the tapered shape when the lower ends of the left and right gate plates are closed.

[0008] The solution is further as follows: the guide rod is arranged on the outer middle side of the bag opening sealing vertical plate through the guide swing arm of the bag guiding and bag withdrawing sealing device; the guide swing arm is driven by the guide cylinder to swing forward and upward to stick to the bag opening sealing vertical plate, or to swing backward and downward to drive the filling bag opening to detach from the filling gate and open, and the middle of the bag opening is closed by the opening force.

[0009] The solution is further that: the guide rod is a round steel rod with a diameter not greater than 10 mm, or a flat steel rod with a thickness not greater than 5 mm; the length of the guide rod is to ensure that the guide rod protrudes from the bag opening sealing plate by at least 20 mm when it is swung against the bag opening sealing plate.

[0010] The scheme is further as follows: the guide swing arm is a parallelogram connecting rod frame formed by four connecting rods hinged to each other, one end of the guide rod is bent as a connecting rod at the lower end of the parallelogram connecting rod frame, the straight rod section of the guide rod is parallel to and perpendicular to the ground and is arranged at the bag mouth blocking vertical plate, and the guide cylinder drives the parallelogram to swing back and forth with the hinged ends of the connecting rods at the upper end of the connecting rod frame as the origin, and the swinging parallelogram connecting rod frame makes the guide rod always perpendicular to the ground and lean against the bag mouth blocking vertical plate to guide the bag, or downward and outward to separate from the bag mouth blocking vertical plate to make the bag mouth of the packaging bag slide down along the conical guide groove and separate from the filling port gate.

[0011] A further solution is that: there are two parallelogram connecting rod frames, and one end of the guide rod is bent and clamped between the two parallelogram connecting rod frames to serve as the lower end connecting rod of the two parallelogram connecting rod frames.

[0012] The beneficial effects of the utility model are as follows: the filling mechanism of the utility model can be used on automatic and semi-automatic filling and packaging equipment; the added bag opening blocking upright plate solves the problem that dust at both ends of the filling gate cannot be handled when the left gate plate and the right gate plate of the filling gate open the bag opening, and the bag opening blocking upright plate completely wraps the left gate plate and the right gate plate of the filling gate when they are opened to form a horizontal closed space, and an exhaust dust suction port is arranged at the upper end thereof. The utility model can completely discharge the dust generated by filling, thereby preventing the pollution and harm of dust to the environment and personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structural axial side of the utility model;

[0014] Figure 2 It is a front view schematic diagram of the structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the closing structure of the side reaction guide rod of the utility model;

[0016] Figure 4 This is a schematic diagram of the opening structure of the side reaction guide rod of the utility model;

[0017] Figure 5 This is a schematic diagram of the structure of the material guiding square cylinder of the utility model;

[0018] Figure 6 This is a schematic diagram of the exploded structure of the left and right gate plates of the filling gate of the utility model;

[0019] Figure 7 It is a schematic diagram of the gap formation structure between the material guide tube and the bag opening blocking vertical plate of the utility model;

[0020] Figure 8 It is a schematic diagram of the gap formation structure between the material guide cylinder and the inner sides of the left and right gate plates of the utility model. DETAILED DESCRIPTION

[0021] A filling mechanism with internal and external vacuum bag return and sealing, such as Figures 1 to 8 As shown, the filling mechanism includes a fixing frame 1 and a filling gate 2. The filling gate 2 is installed on the fixing frame 1. A filling interface 3 is provided on the fixing frame top plate 101. The filling interface 3 is connected to the filling gate 2. The filling interface 3 is used to connect the bulk material conveyor through a sealed pipeline. The filling gate 2 is composed of a left gate plate 201 and a right gate plate 203 that are connected to each other. The gate plates are in a right-angle "U" shape. When the gate is closed, the left and right gate plates are staggered and closed at the lower end to form a cone. Figure 2 It is the state when the lower ends of the left and right gates 201 and 202 are staggered and closed. A clamping plate 204 is arranged on the back of the gates 201 and 202. The clamping plate 204 is used to clamp the bag mouth and is pushed to open and close by the bag clamping cylinder 205. The left gate 201 and the right gate 203 are driven to open and close by the gate driving cylinder 206 respectively, wherein: a material guiding square cylinder 4 is arranged in the filling gate 2, and the upper mouth 401 of the material guiding square cylinder 4 is connected with the filling interface 3 through the inclined plate 402 to buckle the filling interface 3, and one group of the two opposite side cylinder plates of the lower mouth 403 of the material guiding square cylinder 4 is extended downward to form an extended baffle 404, and the extended baffle 404 is conical and coincides with the conical shape presented when the left and right gates 201 and 202 are closed. The closed conical left and right gates 201 and 202 are connected with the conical extended baffle of the material guiding square cylinder 4. The plates 404 are interlocked and sealed, and bag opening blocking upright plates 5 are respectively arranged on the outer sides of the two extended baffles 404 opposite to the guide barrel 4. The width of the bag opening blocking upright plates 5 is that when the left gate plate 201 and the right gate plate 202 of the filling gate are opened to open the bag opening, the bag opening blocking upright plates 5 still cover the side ends of the left gate plate 201 and the right gate plate 202; the upper ends of the bag opening blocking upright plates 5 are connected and fixed to the top plate 4 of the fixing frame, and bag opening guiding grooves 501 are respectively arranged on the bag opening blocking upright plates 5 on both sides, and a bag guiding and bag retreating sealing device 6 is arranged on the outer side of the bag opening blocking upright plates 5, and the bag guiding and bag retreating sealing device 6 is provided with a swingable guiding rod 601, and the guiding rod 601 is used to guide the bag opening from the guiding grooves 501 on the bag opening blocking upright plates 5 on both sides, and to separate the filled packaging bag opening from the filling gate 2 and close the bag opening. After bagging, as shown in FIG. Figure 7 and Figure 8As shown, the surrounding gaps between the outer side of the guide barrel 4 and the inner side of the left and right gates 201, 202 and the bag-opening blocking upright plates 5 on both sides form a closed space a, and at least two groups of four exhaust and dust suction ports 7 are symmetrically arranged around the filling port 3 on the top plate 101 of the fixed frame, wherein one group of two opposite exhaust and dust suction ports 7 are respectively connected to the closed space between the guide barrel 4 and the inner side of the left and right gates 201, 202, and the other group of two opposite exhaust and dust suction ports 7 are respectively connected to the closed space between the guide barrel 4 and the bag-opening blocking upright plates 5, forming a closed space around the guide barrel 4 without dead angles for dust suction. The four exhaust and dust suction ports 7 are respectively connected to the closed space through the closed channel 701.

[0022] In the example, the bag opening guide slot 501 is composed of two guide slots, and the two guide slots are tapered outward and upward respectively, corresponding to the tapered shape when the lower ends of the left and right gate plates 201 and 202 are closed.

[0023] The guide rod 601 is connected to the guide swing arm 602 of the bag guiding and bag returning sealing device 6, and the guide swing arm 602 of the bag guiding and bag returning sealing device 6 is arranged on the middle outer side of the bag opening blocking vertical plate 5, such as Figure 3 As shown, the guide swing arm 602 is driven by the guide cylinder 603 to swing forward and upward to stick to the bag opening blocking vertical plate 5, or as shown in Figure 4 As shown, the bag mouth after filling is driven backward and downward to separate from the filling gate 3 and open, and the middle of the bag mouth is closed at the moment of separation from the filling gate 3 by the outward opening force of the guide rod 601 to prevent dust from escaping from the bag. In order to improve the closing effect: the guide rod 601 cannot be too thick, and the best choice is: the guide rod is a round steel rod with a diameter of no more than 10mm, or a flat steel rod with a thickness of no more than 5mm is used to ensure rigidity; the length of the guide rod 601 is to ensure that the guide rod 6 protrudes from the lower end of the bag mouth sealing plate 5 by at least 20mm when it swings and sticks to the bag mouth sealing plate 5.

[0024] In order to ensure that the guide rod 601 is always vertical to the ground or parallel to the bag mouth blocking vertical plate 5 when it moves: the guide swing arm 602 is a parallelogram connecting rod frame formed by four connecting rods hinged to each other, and the four connecting rods include a long connecting rod 602-1 and a short connecting rod 602-2. One end of the guide rod 601 is bent as a short connecting rod 602-2 at the lower end of the parallelogram connecting rod frame. The straight rod section of the guide rod 601 is parallel to and vertical to the ground with the bag mouth blocking vertical plate 5. The guide cylinder 603 drives the parallelogram to move up and down the connecting rod frame. The short connecting rod 602-2 and the long connecting rod 602-1 are hinged at both ends to swing back and forth as the origin, and the swinging parallelogram connecting rod frame makes the guide rod 601 always perpendicular to the ground and against the bag opening blocking vertical plate to guide the bag, or downward and outward to separate from the bag opening blocking vertical plate so that the bag opening of the packaging bag slides down along the conical guiding groove 501 to separate from the filling port gate 2; there are two parallelogram connecting rod frames, and one end of the guide rod 601 is bent and clamped between the two parallelogram connecting rod frames as the short connecting rod at the lower end of the two parallelogram connecting rod frames.

[0025] The structural arrangement shown in the above-mentioned embodiment of the filling mechanism with internal and external dust suction, bag withdrawal and sealing is compact and reasonable, and can completely discharge the dust generated by filling, thereby preventing the dust from polluting and harming the environment and personnel.

Claims

1. A filling mechanism with internal and external dust suction, bag return and sealing, comprising a fixing frame and a filling gate, the filling gate is mounted on the fixing frame, a filling interface is arranged on the top plate of the fixing frame, the filling interface is used to connect the conveyor through a sealed pipeline, the filling gate is composed of left and right gate plates, the gate plates are in a right-angle "U" shape, when the gate is closed, the left and right gate plates are staggered and closed at the lower end to form a cone, characterized in that, A material guiding square cylinder is arranged in the filling gate, the upper opening of the material guiding square cylinder is connected with the filling interface and buckled with the filling interface, one of the two groups of opposite side cylinder plates at the lower opening of the material guiding square cylinder is extended downward to form an extended baffle, the extended baffle is conical and coincides with the closed cone of the left and right gate plates, the closed conical left and right gate plates are buckled and sealed with the conical extended baffle of the material guiding square cylinder, and bag opening blocking upright plates are respectively arranged on the outer sides of the two opposite extended baffles of the material guiding cylinder, the width of the bag opening blocking upright plates is such that when the filling gate is opened and the bag opening is stretched, the side ends of the left and right gate plates of the filling gate are still covered, the upper ends of the bag opening blocking upright plates are connected and fixed to the top plate of the fixing frame, bag opening guiding grooves are respectively arranged on the bag opening blocking upright plates on both sides, and a bag opening blocking upright plate is arranged on the outer sides of the bag opening blocking upright plates There is a bag guiding and bag withdrawing sealing device, which is provided with a swingable guiding rod, which is used to guide the bag mouth to be inserted from the guiding groove, and to detach the filled packaging bag mouth from the filling gate and close the bag mouth. After bagging, a closed space is formed between the outer side of the guide barrel and the inner sides of the left and right gate plates and the surrounding gap between the bag mouth sealing uprights on both sides. At least two groups of four exhaust and dust suction ports are symmetrically arranged around the filling port on the top plate of the fixed frame, one group of two opposite exhaust and dust suction ports are respectively connected with the closed space between the guide barrel and the inner sides of the left and right gate plates, and the other group of two opposite exhaust and dust suction ports are respectively connected with the closed space between the guide barrel and the bag mouth sealing uprights, forming a closed space around the guide barrel without dead angles for dust suction.

2. The filling mechanism according to claim 1, characterized in that: The four air exhaust and dust suction ports are respectively connected to the closed space through closed channels.

3. The filling mechanism according to claim 1, characterized in that: The bag opening guide slot is composed of two guide slots, and the two guide slots are respectively tapered outwardly and upwardly, corresponding to the tapered shape when the lower ends of the left and right gate plates are closed.

4. The filling mechanism according to claim 1, characterized in that: The guide rod is arranged on the outer middle side of the bag mouth sealing vertical plate through the guide swing arm of the bag guiding and bag withdrawing sealing device. The guide swing arm is driven by the guide cylinder to swing forward and upward to stick to the bag mouth sealing vertical plate, or to swing backward and downward to drive the mouth of the filled packaging bag to detach from the filling gate and open, and the middle of the bag mouth is closed by the opening force.

5. The filling mechanism according to claim 1, characterized in that: The guide rod is a round steel rod with a diameter not greater than 10 mm, or a flat steel rod with a thickness not greater than 5 mm; the length of the guide rod is to ensure that the guide rod protrudes from the bag opening sealing plate by at least 20 mm when it is swung against the bag opening sealing plate.

6. The filling mechanism according to claim 4, characterized in that: The guide swing arm is a parallelogram connecting rod frame formed by four connecting rods hinged to each other, one end of the guide rod is bent as a connecting rod at the lower end of the parallelogram connecting rod frame, the straight rod section of the guide rod is parallel to and perpendicular to the ground and arranged at the bag opening blocking vertical plate, and the guide cylinder drives the parallelogram to swing back and forth with the hinges of the two ends of the connecting rods at the upper end of the connecting rod frame as the origin, and the swinging parallelogram connecting rod frame makes the guide rod always perpendicular to the ground and lean against the bag opening blocking vertical plate to guide the bag, or downward and outward to separate from the bag opening blocking vertical plate to make the bag opening of the packaging bag slide down along the conical guide groove and separate from the filling port gate.

7. The filling mechanism according to claim 6, characterized in that: There are two parallelogram connecting rod frames, and one end of the guide rod is bent and clamped between the two parallelogram connecting rod frames to serve as the lower end connecting rod of the two parallelogram connecting rod frames.

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