Environmentally friendly packaging device for hydroxypropyl methylcellulose powder

Abstract

Provided in the present invention is an environmentally friendly packaging device for hydroxypropyl methylcellulose powder, which falls within the technical field of hydroxypropyl methylcellulose processing. The environmentally friendly packaging device for hydroxypropyl methylcellulose powder comprises a guide sleeve and a bagging unit arranged corresponding to the guide sleeve. The guide sleeve is preformed and comprises an upper frustum portion and a lower frustum portion, the larger end of the upper frustum portion being connected to the larger end of the lower frustum portion. The bagging unit comprises: four bag mouth clamps, which are mounted on a connecting ring in a centrally symmetric distribution, and are configured to be movable in the radial direction of the packaging bag; and a lifting support, which is supported at the bottom of the connecting ring and configured to control the bag mouth clamps to move upward or downward. The packaging device of the present invention is environmentally friendly and hygienic, is convenient to operate, has a simple structure, and has the function of preventing loss of hydroxypropyl methylcellulose powder.

Description

An environmentally friendly packaging device for hydroxypropyl methylcellulose powder Technical Field

[0001] The invention relates to the technical field of hydroxypropyl methylcellulose processing, and in particular to an environmentally friendly packaging device for hydroxypropyl methylcellulose powder. Background Art

[0002] At present, in the last packaging process of hydroxypropyl methylcellulose processing, two workers are generally coordinated to hold the bag mouth of the packaging bag under the pulverizer discharge hopper to receive the material. During this process, the height difference between the bag mouth and the pulverizer discharge hopper and the speed at which the hydroxypropyl methylcellulose powder falls will cause the hydroxypropyl methylcellulose powder to generate a large amount of dust during the filling process, affecting the working environment and damaging the health of workers. At the same time, a large amount of dust will also cause material loss. Directly replacing the pulverizing equipment to obtain better packaging performance is costly, and similarly setting up an automatic baler will also increase considerable costs. Therefore, the present application provides an environmentally friendly packaging device for hydroxypropyl methylcellulose powder. Technical issues

[0003] Currently, in the final packaging step of hydroxypropyl methylcellulose processing, two workers typically work together, holding the bag opening under the crusher's discharge hopper to receive the material. During this process, the height difference between the bag opening and the crusher's discharge hopper, as well as the speed at which the hydroxypropyl methylcellulose powder falls, causes a large amount of dust to be generated during the filling process, affecting the working environment and harming workers' health. The large amount of dust also causes material loss. Simply replacing the crushing equipment to achieve better packaging performance is costly, and installing an automatic baler would also increase costs significantly. Technical Solutions

[0004] A device for environmentally friendly packaging of hydroxypropyl methylcellulose powder comprises a guide sleeve and a bagging unit arranged corresponding to the guide sleeve, wherein the guide sleeve is prefabricated to include an upper frustum portion and a lower frustum portion, wherein the larger end of the upper frustum portion is connected to the larger end of the lower frustum portion; wherein the bagging unit comprises:

[0005] Four bag opening clamps are provided and are installed on the connecting ring in a centrally symmetrical distribution state. The bag opening clamps are configured to be displaceable in the radial direction of the packaging bag;

[0006] A lifting bracket is supported at the bottom of the connecting ring and is used to control the bag opening clamp to rise or fall; wherein:

[0007] The bag opening clamp includes an inner clamping plate and an outer clamping plate for clamping the packaging bag from the inside and outside respectively, a hanging plate connected to the inner clamping plate, and a radial elastic telescopic rod for mounting the hanging plate on the connecting ring. The top end of the inner clamping plate is rotatably connected to the outer end of the outer clamping plate and is provided with a clamping torsion spring.

[0008] The connection between the upper and lower frustum parts corresponds to each bag opening clamp and is provided with a groove with a vertical inner wall, so that the packaging bag can be put on the connection between the upper and lower frustum parts when the bag opening clamp moves into the groove;

[0009] The surface of the lower frustum is provided with a guide groove connected to the groove, and the width of the guide groove is set to match the hanging plate, so that when the bag opening clamp rises, the top end of the hanging plate moves in the guide groove;

[0010] The inner splint is rotatably connected to the bottom end of the hanging plate by a rotating shaft, and the top surface of the inner splint is provided with a first fitting surface which is inclined outward from its inner end and is used to fit the inner wall surface of the guide groove, and the first fitting surface extends upward from its outer end to form a second fitting surface which is used to fit the inner wall surface of the groove when the bag opening clamp rises to the highest position and the inner splint rotates downward.

[0011] Furthermore, the outer end of the lower surface of the inner splint is configured as an outer arc surface that is concentric with the rotating shaft and has a central angle of 90°, and an outer flat surface is extended upward from the top of the outer arc surface. The inner splint has a connecting portion extending vertically outward from the outer flat surface, and the top end of the outer splint is rotatably engaged with the outer end of the connecting portion. The clamping torsion spring is arranged between the top end of the outer splint and the outer end of the connecting portion, and the inner side surface of the outer splint is provided with an inner arc surface and an inner flat surface that respectively cooperate with the outer arc surface and the outer flat surface, and the inner end of the outer splint extends inward from the bottom end of the inner arc surface to below the inner end of the inner splint.

[0012] Furthermore, a limiting column is rotatably mounted on the top end of the outer clamping plate, and when the second fitting surface fits with the inner side wall of the groove, the limiting column contacts the outer side surface of the hanging plate.

[0013] Furthermore, a guide wheel is provided on the inner side of the top of the hanging plate for moving from the guide groove to the groove when the bag opening clamp rises, and when the first fitting surface fits with the inner wall surface of the guide groove, the guide wheel contacts the inner surface of the groove.

[0014] Furthermore, a connecting groove is provided on the top of the inner clamping plate, the rotating shaft is fixedly arranged in the connecting groove, the bottom end of the hanging plate is sleeved on the rotating shaft, and when the second fitting surface fits with the inner side wall of the groove, the inner wall surface of the outward side of the connecting groove contacts the outer side surface of the hanging plate, and when the inner clamping block is in a horizontal state, the inner wall surface of the inward side of the connecting groove contacts the inner side surface of the hanging plate.

[0015] Furthermore, the outer flat surface and the inner flat surface are both rotatably mounted with an outer wheel clamp and an inner wheel clamp, which are axially parallel to the outer flat surface and the inner flat surface respectively, so that the part of the bag opening of the packaging bag clamped by the bag opening clamp can be pulled in the circumferential direction, and the outer wheel clamp and the inner wheel clamp are staggered in the axial direction.

[0016] Furthermore, a conveyor belt for supporting the bottom of the packaging bag is provided directly below the guide sleeve, and the lifting bracket includes longitudinal elastic telescopic rods provided at both ends of the bottom of the connecting ring corresponding to the width direction of the conveyor belt, and the bottom ends of the two longitudinal elastic telescopic rods are connected by a semi-annular plate, and one end of the semi-annular plate is supported on the base, and the base is provided with an electric push rod for lifting the connecting ring.

[0017] Furthermore, there are two bagging units, and the two bagging units are connected by a support ring. The support ring is rotatably mounted on the base and is coaxially arranged with the base. The opposite ends of the two connecting rings are jointly supported on the protruding end of the electric push rod. Beneficial effects

[0018] 1. The present invention cooperates with the guide sleeve by arranging the bagging unit so that the bag opening of the packaging bag can form a good sealing effect with the guide sleeve after the guide sleeve is put on, thereby preventing a large amount of hydroxypropyl methylcellulose powder from being scattered in the environment when the packaging bag is filled with hydroxypropyl methylcellulose powder, thereby affecting the environment and damaging the health of workers, and also preventing dust from scattering and causing material waste.

[0019] 2. The present invention can automatically perform radial displacement according to the guide sleeve by arranging the bag opening clamp, thereby aligning the bag opening of the packaging bag with the guide sleeve, ensuring that the bag opening of the packaging bag can be more smoothly put on the guide sleeve.

[0020] 3. The present invention provides an inner wheel clamp and an outer wheel clamp so that during the outward displacement of the bag opening clamp as a whole, the clamped portion of the bag opening of the packaging belt can be pulled in the circumferential direction to facilitate adjustment of the bagging state, so that the packaging belt can be more accurately aligned with the guide sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is an overall schematic diagram of an environmentally friendly packaging device for hydroxypropyl methylcellulose powder according to the present invention;

[0022] FIG2 is an enlarged view of point A in FIG1 of the environmentally friendly packaging device for hydroxypropyl methylcellulose powder of the present invention;

[0023] FIG3 is a schematic diagram of the state when the bag opening clamp of the environmentally friendly packaging device for hydroxypropyl methylcellulose powder of the present invention holds the bag opening of the packaging bag and rises to the state where the first bonding surface is bonded to the inner top wall of the guide groove;

[0024] FIG4 is an enlarged view of point B in FIG3 of the environmentally friendly packaging device for hydroxypropyl methylcellulose powder of the present invention;

[0025] FIG5 is a schematic diagram of the state in which the second laminating surface is in contact with the inner wall of the groove when the bag opening clamp of the environmentally friendly packaging device for hydroxypropyl methylcellulose powder of the present invention is clamped to the bag opening of the packaging bag and raised to the highest position;

[0026] FIG6 is an enlarged view of point C in FIG5 of the environmentally friendly packaging device for hydroxypropyl methylcellulose powder of the present invention;

[0027] 7 is a schematic diagram of a bag opening fixture of an environmentally friendly packaging device for hydroxypropyl methylcellulose powder according to the present invention;

[0028] 8 is a schematic diagram of an outer wheel clamping block and an inner wheel clamping block of an environmentally friendly packaging device for hydroxypropyl methylcellulose powder according to the present invention;

[0029] 9 is a partial cross-sectional view of the bag opening fixture of the environmentally friendly packaging device for hydroxypropyl methylcellulose powder of the present invention;

[0030] FIG10 is a schematic diagram of a guide sleeve of an environmentally friendly packaging device for hydroxypropyl methylcellulose powder according to the present invention. Best Mode for Carrying Out the Invention

[0031] Referring to Figures 1 to 10 , an environmentally friendly packaging device for hydroxypropyl methylcellulose powder provided by an embodiment of the present invention includes a guide sleeve 1 and a bagging unit corresponding to the guide sleeve 1. The guide sleeve 1 is prefabricated and comprises an upper frustum portion 1.1 and a lower frustum portion 1.2, with the larger end of the upper frustum portion 1.1 connected to the larger end of the lower frustum portion 1.2. The guide sleeve 1 is designed to be mounted on the discharge pipe of a pulverizer. Specifically, the guide sleeve 1 can be integrally formed. Modes for Carrying Out the Invention

[0032] Referring to Figures 1 to 10 , an environmentally friendly packaging device for hydroxypropyl methylcellulose powder provided by an embodiment of the present invention includes a guide sleeve 1 and a bagging unit corresponding to the guide sleeve 1. The guide sleeve 1 is prefabricated and comprises an upper frustum portion 1.1 and a lower frustum portion 1.2, with the larger end of the upper frustum portion 1.1 connected to the larger end of the lower frustum portion 1.2. The guide sleeve 1 is designed to be mounted on the discharge pipe of a pulverizer. Specifically, the guide sleeve 1 can be integrally formed.

[0033] The bagging unit includes a bag opening clamp 2, a connecting ring 3 and a lifting bracket 4.

[0034] Four bag opening clamps 2 are provided on the connecting ring 3, and are symmetrically distributed about the center of the connecting ring 3. The bag opening clamps 2 are configured to be displaceable in the radial direction of the packaging bag. This symmetrical distribution and radial displacement of the bag opening clamps 2 allows the bag opening to be fully expanded to its maximum position during outward displacement of the bag opening clamps 2.

[0035] The lifting bracket 4 is supported at the bottom of the connecting ring 3 and is used to control the raising and lowering of the bag opening clamp 2. At this time, the lifting bracket 4 is used to control the bag opening clamp 2 to rise, which can be used to put the packaging bag on the guide sleeve 1 from the bottom up. The lifting bracket 4 is used to control the bag opening clamp 2 to descend, which can be used to remove the packaging bag from the guide sleeve 1 from the top down.

[0036] The bag opening clamp 2 comprises an inner clamping plate 2.1 and an outer clamping plate 2.2, which respectively clamp the packaging bag from the inside and outside; a hanging plate 2.3 connected to the inner clamping plate 2.1; and a radial elastic telescopic rod 2.4 that mounts the hanging plate 2.3 on the connecting ring 3. The top end of the inner clamping plate 2.1 is rotatably connected to the outer end of the outer clamping plate 2.2 and is equipped with a clamping torsion spring. The clamping torsion spring is used to provide elastic force for the inner and outer clamping plates 2.1 and 2.2 to clamp the packaging bag.

[0037] A groove 1.3 with a vertical inner wall is formed at the junction of the upper and lower frustum portions 1.1, 1.2, corresponding to each bag opening fixture 2. This groove 1.3 allows the packaging bag to fit over the junction of the upper and lower frustum portions 1.1, 1.2 when the bag opening fixture 2 moves into the groove 1.3. Specifically, when the bag opening of the packaging bag fits over the junction of the upper and lower frustum portions 1.1, 1.2, the groove 1.3 accommodates the bag opening fixture 2, allowing the bag opening to better adhere to the guide sleeve 1. This ensures a good seal between the bag and the guide sleeve 1, preventing dust from flying when the hydroxypropyl methylcellulose powder is filled into the bag, improving environmental protection and hygiene while also reducing the loss of hydroxypropyl methylcellulose powder.

[0038] The surface of the lower cone portion 1.2 is provided with a guide groove 5 connected to the groove 1.3, and the width of the guide groove 5 is set to match the hanging plate 2.3, so that the top of the hanging plate 2.3 moves in the guide groove 5 when the bag opening clamp 2 rises.

[0039] At this point, before the bag opening fixture 2 contacts the lower conical portion 1.2, it is elastically supported by the radially elastic telescopic rod 2.4, causing the bag opening fixture 2 to be radially positioned inward. During its ascent, the bag opening fixture 2 contacts the surface of the lower conical portion 1.2, and the hanging plate 2.3 enters the guide groove 5. During this process, guided by the inner wall of the guide groove 5, the bag opening fixture 2 gradually moves outward, gradually expanding the bag opening.

[0040] At this time, under the elastic action of the radial elastic telescopic rod 2.4, it is ensured that the fully expanded bag opening clamp 2 is centrally symmetrically distributed around the guide sleeve 1. During this process, the packaging bag continuously expands from bottom to top and is placed outside the lower frustum portion 1.2.

[0041] At the same time, after the packaging bag is filled with hydroxypropyl methylcellulose powder, the radial elastic telescopic rod 2.4 will drive the bag opening clamp 2 to move inward during the descent of the bag opening. During the closing process of the bag opening, the hydroxypropyl methylcellulose powder floating in the bag opening range can be reduced from floating out, and then the powder can be separated from the guide sleeve 1 through the bag opening, thereby further effectively preventing dust from scattering.

[0042] Specifically, in an embodiment of the present invention, the inner splint 2.1 is rotatably connected to the bottom end of the hanging plate 2.3 via a rotating shaft 2.5, and the top surface of the inner splint 2.1 is provided with a first fitting surface 2.6 which is inclined outward from its inner end and is used to fit the inner wall surface of the guide groove 5, and the first fitting surface 2.6 extends upward from its outer end to form a second fitting surface 2.7 which is used to fit the inner wall surface of the groove 1.3 when the bag mouth clamp 2 rises to the highest position and the inner splint 2.1 rotates downward.

[0043] The first and second fitting surfaces 2.6 and 2.7 respectively fit the inner walls of the guide groove 5 and the groove 1.3, thereby sealing the guide groove 5 and the groove 1.3, further preventing dust from falling from the guide sleeve 1 into the packaging bag and escaping from the gap, thereby improving the sealing effect.

[0044] In addition, the first fitting surface 2.6 and the second fitting surface 2.7 are respectively fitted to the inner wall of the guide groove 5 and the groove 1.3 to limit the bag opening clamp 2, thereby improving the stability of the packaging bag after the guide sleeve 1 is put on.

[0045] It should be noted that in the above embodiment of the present invention, since the inner splint 2.1 is rotatably connected to the bottom end of the hanging plate 2.3, and the outer splint 2.2 is rotatably installed on the inner splint 2.1, at this time, after the inner splint 2.1 cooperates with the outer splint 2.2 to clamp the bag opening of the packaging bag, the inner splint 2.1 and the outer splint 2.2 as a whole can rotate with the rotating shaft 2.5 as the axis.

[0046] The process of the first fitting surface 2.6 of the inner splint 2.1 fitting with the inner wall surface of the guide groove 5 is achieved by the rising of the bag mouth clamp 2. Specifically, when the inner splint 2.1 in a horizontal state rises, it contacts the inner top wall of the guide groove 5 to achieve the fitting of the first fitting surface 2.6 with the inner top wall of the guide groove 5. At this time, the axis of the rotating shaft 2.5 just coincides with or is higher than the connection between the upper frustum part 1.1 and the lower frustum part 1.2 in the height direction. As the bag mouth clamp 2 continues to rise, when the inner splint 2.1 and the outer splint 2.2 rotate as a whole with the rotating shaft 2.5 as the axis, the edge of the bag mouth will use the circular motion process to better bypass the connection between the upper frustum part 1.1 and the lower frustum part 1.2 and overlap the surface of the upper frustum part 1.1 to achieve a better sealing effect. At the same time, the second fitting surface 2.7 fits with the inner side wall of the groove 1.3.

[0047] Among them, the outer end of the lower surface of the inner plywood 2.1 is set to an outer arc surface 2.8 which is concentric with the rotating shaft 2.5 and has a central angle of 90°. The top of the outer arc surface 2.8 extends upward with an outer flat surface 2.9, and the inner plywood 2.1 has a connecting portion 2.10 extending vertically outward from the outer flat surface 2.9. The top of the outer plywood 2.2 is rotatably matched with the outer end of the connecting portion 2.10. The clamping torsion spring is arranged between the top of the outer plywood 2.2 and the outer end of the connecting portion 2.10, and the inner side surface of the outer plywood 2.2 is provided with an inner arc surface 2.11 and an inner flat surface 2.12 which respectively cooperate with the outer arc surface 2.8 and the outer flat surface 2.9, and the inner end of the outer plywood 2.2 extends inward from the bottom end of the inner arc surface 2.11 to below the inner end of the inner plywood 2.1.

[0048] Through the cooperation of the outer arc surface 2.8 and the inner arc surface 2.11, on the one hand, the area of ​​the bag opening clamp 2 for clamping the packaging bag can be increased and the clamping effect can be improved; on the other hand, after the inner clamping plate 2.1 and the outer clamping plate 2.2 rotate as a whole around the rotating shaft 2.5, the arc shape of the bag opening edge of the packaging bag clamped by the outer arc surface 2.8 and the inner arc surface 2.11 can be better adhered to the surface of the upper frustum part 1.1.

[0049] When the bag opening clamp 2 grips the bag opening, the portion of the bag below the outer plate 2.2 tilts inward. As hydroxypropyl methylcellulose powder continues to enter the bag, the bag gradually expands and tightens. During this tightening process, the side of the bag exerts a force on the bottom of the outer plate 2.2, causing the inner plate 2.1 and outer plate 2.2 to rotate together around the rotation axis 2.5 until the second contact surface 2.7 contacts the inner sidewall of the groove 1.3.

[0050] In addition, when the bag opening of the packaging bag is pulled away from the guide sleeve 1, the bag opening clamp 2 moves downward. Since the packaging bag contains hydroxypropyl methylcellulose powder, the part of the packaging bag above the hydroxypropyl methylcellulose powder tends to be taut, and with the elastic effect of the radial elastic telescopic rod 2.4, the bag opening clamp 2 will move inward synchronously when it moves downward.

[0051] At this point, the inner end of outer plate 2.2 is subjected to the force of the taut bag, causing it to rotate outward relative to inner plate 2.1, thereby opening the outer and inner plates 2.2. Simultaneously, the opening of the bag, located between outer plate 2.2 and inner plate 2.1, is pulled away from between them, freeing the bag from the opening fixture 2. Furthermore, after the bag is freed from the opening fixture 2, the opening fixture 2 is positioned vertically between the hydroxypropyl methylcellulose powder in the bag and the guide sleeve 1, facilitating removal of the packaging strip from the bagging unit.

[0052] Furthermore, a limit post 6 is rotatably mounted on the top of the outer clamping plate 2.2. When the second contact surface 2.7 contacts the inner wall of the groove 1.3, the limit post 6 contacts the outer surface of the hanging plate 2.3. At this time, the limit post 6 is blocked by the hanging plate 2.3, thereby limiting the position of the outer clamping plate 2.2, which helps to improve the stability of the packaging bag when the hydroxypropyl methylcellulose powder is filled.

[0053] A guide wheel 7 is provided on the inner side of the top of the hanging plate 2.3, which is used to move from the guide groove 5 into the groove 1.3 when the bag opening clamp 2 rises. When the first contact surface 2.6 contacts the inner wall of the guide groove 5, the guide wheel 7 contacts the inner wall of the groove 1.3. This arrangement allows the guide wheel 7 to roll within the guide groove 5 and groove 1.3, facilitating smoother movement of the bag opening clamp 2. Furthermore, the guide wheel 7's location inside the hanging plate 2.3 ensures that the bag is lighter overall due to the absence of hydroxypropyl methylcellulose powder in the bag during its upward movement within the guide groove 5. The size of the guide wheel 7 prevents the inner plate 2.1 from contacting the inner wall of the guide groove 5 until the guide wheel 7 rises within the groove 1.3, at which point the inner plate 2.1 contacts the inner wall.

[0054] Furthermore, the guide wheel 7 helps maintain the inner and outer plates 2.1 and 2.2 in a horizontal position as it ascends within the guide groove 5. At this point, the outer and inner flat surfaces 2.9 and 2.12 are both vertical, allowing the bag opening edge to face upward. This allows the bag opening edge to better fit over the connection between the upper and lower frustum portions 1.1 and 1.2 when the bag opening fixture 2 is moved outward to its furthest position, thereby improving the effectiveness of the guide sleeve 1 in fitting the packaging bag.

[0055] Specifically, a connecting groove 8 is formed at the top of the inner plate 2.1, and a rotating shaft 2.5 is fixedly disposed within the connecting groove 8. The bottom end of the hanging plate 2.3 is sleeved onto the rotating shaft 2.5. When the second contact surface 2.7 contacts the inner sidewall of the groove 1.3, the outward-facing inner wall of the connecting groove 8 contacts the outer sidewall of the hanging plate 2.3. When the inner plate 2.1 is horizontal, the inward-facing inner wall of the connecting groove 8 contacts the inner sidewall of the hanging plate 2.3. This arrangement limits the rotational range of the inner plate 2.1 and the outer plate 2.2, thereby improving stability after rotation.

[0056] In addition, in the embodiment of the present invention, the outer straight surface 2.9 and the inner straight surface 2.12 are both rotatably mounted with axially divided

[0057] The outer wheel clamping block 9 and the inner wheel clamping block 10 are respectively parallel to the outer flat surface 2.9 and the inner flat surface 2.12, so that the part of the bag opening of the packaging bag clamped by the bag opening clamp 2 can be pulled in the circumferential direction, and the outer wheel clamping block 9 and the inner wheel clamping block 10 are staggered in the axial direction.

[0058] With this arrangement, the inner wheel clamp 10 and the outer wheel clamp 9 can stably clamp the packaging bag in the height direction, ensuring that the packaging bag can be effectively driven by the bag opening clamp 2 and placed on the guide sleeve 1. Furthermore, as the bag opening clamp 2 moves outward, the portion of the packaging bag held by the bag opening clamp 2 can move in the circumferential direction. This movement allows the packaging bag to eventually align with the guide sleeve 1, achieving the effect of automatically adjusting the packaging bag and facilitating its placement on the guide sleeve 1.

[0059] Directly below the guide sleeve 1 is a conveyor belt 11 supporting the bottom of the packaging bag. The lifting bracket 4 comprises a longitudinal elastic telescopic rod 4.1 and a semi-circular plate 4.2. The conveyor belt 11 supports the bottom of the bag while it is being filled with hydroxypropyl methylcellulose powder. When the bag opening is removed from the guide sleeve 1, the bag opening clamp 2 is positioned above the belt and between the bag and the bottom of the guide sleeve 1. The conveyor belt 11 does not require a power device; it simply pushes the filled bag to remove it from the bagging unit and the bottom of the guide sleeve 1.

[0060] Among them, one longitudinal elastic telescopic rod 4.1 is set on each side corresponding to the width direction of the conveyor belt 11, and the top ends of the two longitudinal elastic telescopic rods 4.1 are fixedly connected to the bottom of the connecting ring 3, and the two ends of the semi-annular plate 4.2 are respectively connected to the bottom ends of the two longitudinal elastic telescopic rods 4.1.

[0061] One end of the semi-annular plate 4.2 is supported on a base 12, which is equipped with an electric push rod 13 for raising the connecting ring 3. Specifically, the extended end of the electric push rod 13 is supported on the connecting ring 3. By controlling the electric push rod 13, the connecting ring 3 is raised or lowered. In this way, the bag opening is inserted into and removed from the guide sleeve 1.

[0062] Furthermore, there are two bagging units in the embodiment of the present invention, and the two bagging units are connected by a support ring 14. The support ring 14 is rotatably mounted on the base 12 and is coaxially arranged with the base 12. The opposite ends of the two connecting rings 3 are jointly supported on the protruding end of the electric push rod 13.

[0063] At this time, the use of two bagging units allows one bag to be filled with hydroxypropyl methylcellulose powder while the other bagging unit is being installed with a bag, thereby improving the filling efficiency of the hydroxypropyl methylcellulose powder by rotating and switching the two bagging units. Industrial Applicability

[0064] The environmentally friendly packaging device for hydroxypropyl methylcellulose powder provided in an embodiment of the present invention comprises a guide sleeve 1 and a bagging unit corresponding to the guide sleeve 1. The guide sleeve 1 is prefabricated to include an upper frustum portion 1.1 and a lower frustum portion 1.2, with the larger end of the upper frustum portion 1.1 connected to the larger end of the lower frustum portion 1.2. The guide sleeve 1 is designed to be mounted on the discharge pipe of a pulverizer. Specifically, the guide sleeve 1 can be integrally formed.

Claims

1. An environmentally friendly packaging device for hydroxypropyl methylcellulose powder, It is characterized in that The invention comprises a guide sleeve (1) and a bagging unit arranged corresponding to the guide sleeve (1), wherein the guide sleeve (1) is prefabricated to include an upper frustum portion (1.1) and a lower frustum portion (1.2), wherein the larger end of the upper frustum portion (1.1) is connected to the larger end of the lower frustum portion (1.2); wherein the bagging unit comprises: a bag mouth clamp (2), which is provided with four and is installed on a connecting ring (3) in a centrally symmetrically distributed state, wherein the bag mouth clamp (2) is arranged to be displaceable in the radial direction of the packaging bag; a lifting bracket (4), which is supported at the bottom of the connecting ring (3) and is used to control the bag mouth clamp (2) to rise or fall; wherein: the bag mouth clamp (2) comprises an inner clamping plate (2.1) and an outer clamping plate (2.2) for clamping the packaging bag from the inside and outside respectively. .2), a hanging plate (2.3) connected to the inner clamp (2.1), and a radial elastic telescopic rod (2.4) for mounting the hanging plate (2.3) on the connecting ring (3), the top end of the inner clamp (2.1) is rotatably connected to the outer end of the outer clamp (2.2) and is provided with a clamping torsion spring; the connection between the upper cone portion (1.1) and the lower cone portion (1.2) is provided with a groove (1.3) whose inner side wall is a vertical surface corresponding to each bag opening clamp (2), so that the packaging bag can be put on the connection between the upper cone portion (1.1) and the lower cone portion (1.2) when the bag opening clamp (2) moves into the groove (1.3); the surface of the lower cone portion (1.2) is provided with a guide groove (5) connected to the groove (1.3), and the width of the guide groove (5) is set to be the same as that of the hanging plate (2 .3) is adapted to be used when the bag mouth clamp (2) rises, and the top end of the hanging plate (2.3) is displaced in the guide groove (5); the inner clamp (2.1) and the bottom end of the hanging plate (2.3) are rotatably connected via a rotating shaft (2.5), and the top surface of the inner clamp (2.1) is provided with a first fitting surface (2.6) which is inclined outward from its inner side end and is used to fit the inner wall surface of the guide groove (5), and the first fitting surface (2.6) extends upward from its outer side end to form a second fitting surface (2.7) which is used to fit the inner wall surface of the groove (1.3) when the bag mouth clamp (2) rises to the highest position and the inner clamp (2.1) rotates downward with the rotating shaft (2.5) as the center.

2. The environmentally friendly packaging device for hydroxypropyl methylcellulose powder according to claim 1, It is characterized in that The outer end of the lower surface of the inner clamping plate (2.1) is arranged to be an outer arc surface (2.8) which is concentric with the rotating shaft (2.5) and has a central angle of 90°. An outer straight surface (2.9) extends upward from the top of the outer arc surface (2.8). The inner clamping plate (2.1) has a connecting portion (2.10) extending vertically outward from the outer straight surface (2.9). The top end of the outer clamping plate (2.2) is rotatably matched with the outer end of the connecting portion (2.10). The clamping torsion spring is arranged between the top end of the outer clamping plate (2.2) and the connecting portion (2.10). .10), and the inner side surface of the outer clamping plate (2.2) is provided with an inner arc surface (2.11) and an inner straight surface (2.12) respectively matching with the outer arc surface (2.8) and the outer straight surface (2.9), and the inner end of the outer clamping plate (2.2) extends inward from the bottom end of the inner arc surface (2.11) to below the inner end of the inner clamping plate (2.1).

3. The environmentally friendly packaging device for hydroxypropyl methylcellulose powder according to claim 2, It is characterized in that A limiting column (6) is rotatably mounted on the top end of the outer clamping plate (2.2), and when the second fitting surface (2.7) fits with the inner side wall of the groove (1.3), the limiting column (6) contacts the outer side surface of the hanging plate (2.3).

4. The environmentally friendly packaging device for hydroxypropyl methylcellulose powder according to claim 2, It is characterized in that A guide wheel (7) is provided on the inner side of the top of the hanging plate (2.3) for moving from the guide groove (5) to the groove (1.3) when the bag opening clamp (2) rises, and when the first fitting surface (2.6) fits with the inner wall surface of the guide groove (5), the guide wheel (7) contacts the inner surface of the groove (1.3).

5. The environmentally friendly packaging device for hydroxypropyl methylcellulose powder according to claim 2, It is characterized in that A connecting groove (8) is provided at the top of the inner clamping plate (2.1), the rotating shaft (2.5) is fixedly arranged in the connecting groove (8), the bottom end of the hanging plate (2.3) is sleeved on the rotating shaft (2.5), and when the second fitting surface (2.7) fits with the inner side wall of the groove (1.3), the inner wall surface of the connecting groove (8) facing outward contacts the outer side surface of the hanging plate (2.3), and when the inner clamping block is in a horizontal state, the inner wall surface of the connecting groove (8) facing inward contacts the inner side surface of the hanging plate (2.3).

6. The environmentally friendly packaging device for hydroxypropyl methylcellulose powder according to claim 2, It is characterized in that An outer wheel clamp (9) and an inner wheel clamp (10) are rotatably mounted on the outer straight surface (2.9) and the inner straight surface (2.12), and the axial directions of the outer wheel clamp (9) and the inner straight surface (2.12) are parallel to the outer straight surface (2.9) and the inner straight surface (2.12), respectively, so that the portion of the bag opening of the packaging bag clamped by the bag opening clamp (2) can be pulled in the circumferential direction, and the outer wheel clamp (9) and the inner wheel clamp (10) are staggered in the axial direction.

7. The environmentally friendly packaging device for hydroxypropyl methylcellulose powder according to any one of claims 1 to 6, It is characterized in that A conveyor belt (11) for supporting the bottom of the packaging bag is arranged directly below the guide sleeve (1), and the lifting bracket (4) includes longitudinal elastic telescopic rods (4.1) arranged at both ends of the bottom of the connecting ring (3) corresponding to the width direction of the conveyor belt (11), the bottom ends of the two longitudinal elastic telescopic rods (4.1) are connected by a semi-annular plate body (4.2), and one end of the semi-annular plate body (4.2) is supported on a base (12), and an electric push rod (13) for lifting the connecting ring (3) is arranged on the base (12).

8. The environmentally friendly packaging device for hydroxypropyl methylcellulose powder according to claim 7, It is characterized in that Two bagging units are provided, and the two bagging units are connected via a support ring (14). The support ring (14) is rotatably mounted on the base (12) and is coaxially arranged with the base (12). The opposite ends of the two connecting rings (3) are jointly supported on the protruding end of the electric push rod (13).

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