Pneumatic feeding device for chemical production

Abstract

The utility model discloses a pneumatic feeding device for chemical production. The pneumatic feeding device comprises a funnel provided with a feeding pipe, an annular wall arranged in the funnel, an air blowing mechanism arranged between the funnel and the annular wall, and a cut-off mechanism arranged at the discharging end of the funnel, a through hole with the hole wall arranged obliquely downwards is formed in the annular wall, a baffle horizontally extending out is arranged on the annular wall in a winding mode along the shape of the annular wall, a bent section is arranged at the extending end of the baffle, the lower end face of the baffle abuts against the upper end face of the funnel, and the inner side wall of the bent section is attached to the outer side wall of the funnel. The material and the inner wall of the funnel are separated by the ring wall, so that the probability of residue accumulation can be reduced, the residual material on the ring wall can be conveniently collected on the premise that the funnel is not moved, the feeding accuracy is ensured, and the production cost is reduced; the arranged blowing mechanism is beneficial to rapid movement of the materials and can assist in preventing residual accumulation of the materials; and the cut-off mechanism is arranged, so that the feeding amount is convenient to control while the smooth feeding of the materials is ensured.

Description

Technical Field

[0001] This utility model relates to the field of chemical production technology, and in particular to a pneumatic feeding device for chemical production. Background Technology

[0002] In chemical production, it is common to encounter solid materials with high viscosity or strong adhesion that need to be fed. Due to the inherent characteristics of the materials, the solid materials often adhere to the wall of the feeding funnel or clump together during feeding, making them difficult to collect and reuse. This results in inaccurate feeding quantities or blockage of the normal discharge port, reducing production efficiency, increasing processing costs, and significantly affecting the normal operation of production. Utility Model Content

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a pneumatic feeding device for chemical production that can reduce material adhesion and is easy to disassemble and clean.

[0004] To solve the above-mentioned technical problems, the present invention provides a pneumatic feeding device for chemical production, comprising a funnel with a feeding pipe, a detachable annular wall disposed within the funnel, an air blowing mechanism disposed between the funnel and the annular wall, and a flow interception mechanism disposed at the discharge end of the funnel; the annular wall has a plurality of through holes with the hole walls angled downwards, and a horizontally extending baffle is disposed around the annular wall along the outer shape of the annular wall, the extended end of the baffle is integrally connected with a bent section, the lower end face of the baffle abuts against the upper end face of the funnel, and the inner side wall of the bent section fits against the outer side wall of the funnel.

[0005] The above structure features an annular wall that prevents direct contact between the material and the inner wall of the funnel upon entry. Simultaneously, an air-blowing mechanism blows air into the funnel, moving the airflow and continuing through downward-sloping holes in the annular wall towards the center of the funnel. This directs the airflow towards the material within the annular wall, causing it to fall rapidly to the outlet end of the funnel. This prevents most material from accumulating on the inner wall of the annular wall, minimizing contact between the material and the inner wall. The flow-intercepting mechanism ensures smooth material feeding while controlling the feed rate. The baffle and bending section facilitate the annular wall's attachment to the funnel and create a seal at the upper part between the funnel and the annular wall, preventing leakage. Furthermore, after feeding, the annular wall can be easily removed, allowing any remaining material to be collected and reused.

[0006] To simplify the structure and facilitate installation, preferably, the funnel is vertically enclosed by a first side plate, a second side plate, a third side plate, and a fourth side plate. The upper surfaces of the four side plates abut against the lower surfaces of the baffle. The cross-section of the funnel is rectangular, and the cross-sectional shape of the ring wall is adapted to the cross-sectional shape of the funnel.

[0007] To facilitate installation and prevent material leakage, preferably, a sealing cover is hinged to the baffle at the position corresponding to the first side plate, and the feeding pipe passes through the sealing cover.

[0008] To facilitate installation and simplify the structure, preferably, each of the two adjacent side plates is provided with a guide plate extending toward the center of the funnel at the connection point. A guide block is provided on the outer wall of the ring wall at the position corresponding to the guide plate. A guide groove is provided on the guide block, and the guide plate extends into the guide groove so that the ring wall and the funnel can be connected.

[0009] To prevent the ring wall from shifting downwards and squeezing the material, thus hindering the material discharge, it is preferable to provide a limiting block on the guide plate. The guide plate extends into the guide groove, so that the guide block is inserted into the guide plate and abuts against the limiting block, thereby achieving the purpose of limiting the installation of the ring wall.

[0010] To facilitate the provision of air vents at multiple locations to ensure sufficient airflow at each through-hole location in the annular wall to blow material, the air blowing mechanism preferably includes an air guide pipe disposed between the annular wall and the funnel, an air inlet pipe passing through the side plate at the corresponding end and connected to the air guide pipe, and multiple air distribution pipes disposed along the slope direction of the conical surface of the funnel and connected to the air guide pipe. Each air distribution pipe has a number of air outlets evenly disposed along the axial direction of the air distribution pipe; the air outlets on two adjacent air distribution pipes are staggered.

[0011] To prevent material from accumulating and obstructing during the feeding process due to short-term static placement, the interception mechanism preferably includes a discharge cylinder connected to the discharge end of the funnel, a spiral screw disposed inside the discharge cylinder, and a partition plate movably disposed at the lower end of the discharge cylinder. The output end of a servo motor is connected to one side of the spiral screw, and the servo motor is fixed to one side of the outer wall of the discharge cylinder.

[0012] To facilitate control of the feeding amount and simplify the installation structure, preferably, a support rod is connected to the partition plate, the support rod is connected to the output end of the stepper motor, and the stepper motor is fixed on the other side of the outer wall of the discharge cylinder.

[0013] To ensure a good production environment and minimize the flow of material dust in the air, it is preferable to install a dust-blocking cloth cover at the discharge end of the discharge cylinder at the production location to prevent dust from entering the production area.

[0014] Beneficial effects: The annular wall of this invention separates the material from the inner wall of the funnel, which not only reduces the chance of residue accumulation, but also facilitates the collection of residual material on the annular wall without moving the funnel, so as to ensure the accuracy of feeding and reduce production costs; the air blowing mechanism helps the material move quickly and helps prevent material residue accumulation; the interception mechanism ensures smooth material feeding and also facilitates the control of the feeding amount. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 for Figure 1 Top view.

[0018] Figure 3 This is a schematic diagram of the structure of the guide plate and guide block.

[0019] Figure 4 This is a schematic diagram showing the arrangement of the air vent.

[0020] The meanings of the labels in the attached diagram are as follows:

[0021] Sealing cap-1; Guide plate-10; First side plate-11; Second side plate-12; Third side plate-13; Fourth side plate-14; Limiting block-15; Feeding pipe-16;

[0022] Annular wall-2; baffle-20; bent section-21; guide block-22; guide groove-221; through hole-23;

[0023] Air duct-3; Air inlet-30; Air distribution pipe-31; Air outlet-311;

[0024] Discharge cylinder-4; spiral screw-40; partition plate-41; servo motor-42; support rod-43; stepper motor-44; dust-blocking cloth cover-45. Detailed Implementation

[0025] like Figures 1 to 4As shown, this utility model includes a funnel with a feeding pipe 16, a ring wall 2 detachably disposed inside the funnel, an air blowing mechanism disposed between the funnel and the ring wall 2, and a flow interception mechanism disposed at the discharge end of the funnel; the ring wall 2 is provided with a plurality of through holes 23 with the hole walls angled downwards, and a horizontally extending baffle 20 is disposed around the outer shape of the ring wall 2, the extended end of the baffle 20 is integrally connected with a bent section 21, the lower end face of the baffle 20 abuts against the upper end face of the funnel and the inner side wall of the bent section 21 fits against the outer side wall of the funnel.

[0026] Specifically, the funnel is vertically enclosed by a first side plate 11, a second side plate 12, a third side plate 13, and a fourth side plate 14. The upper surfaces of the four side plates abut against the lower surface of the baffle 20. The funnel has a rectangular cross-section, and the cross-sectional shape of the annular wall 2 matches the cross-sectional shape of the funnel. A sealing cover 1 is hinged to the baffle 20 at a position corresponding to the first side plate 11, and the feeding pipe 16 passes through the sealing cover 1.

[0027] Each of the two adjacent side plates is provided with a guide plate 10 extending toward the center of the funnel. On the outer side wall of the ring wall 2, at the position corresponding to the guide plate 10, a guide block 22 is provided. The guide block 22 is provided with a guide groove 221. The guide plate 10 extends into the guide groove 221 so that the ring wall 2 can be connected to the funnel. A limiting block 15 is provided on the guide plate 10. The guide plate 10 extends into the guide groove 221 so that the guide block 22 is inserted into the guide plate 10 and abuts against the limiting block 15, so as to achieve the purpose of limiting the installation of the ring wall 2.

[0028] The blowing mechanism includes an air guide pipe 3 located between the ring wall 2 and the funnel, an air inlet pipe 30 passing through the side plate at the corresponding end and connected to the air guide pipe 3, and a plurality of air distribution pipes 31 arranged along the slope direction of the cone surface of the funnel and connected to the air guide pipe 3. Each air distribution pipe 31 has a plurality of air outlet holes 311 evenly arranged along the axial direction of the air distribution pipe 31; the air outlet holes 311 on two adjacent air distribution pipes 31 are staggered with each other.

[0029] The interception mechanism includes a discharge cylinder 4 connected to the discharge end of the funnel, a spiral screw 40 disposed inside the discharge cylinder 4, and a partition 41 movably disposed at the lower end of the discharge cylinder 4. One side of the spiral screw 40 is connected to the output end of a servo motor 42, which is fixed on one side of the outer wall of the discharge cylinder 4. A support rod 43 is connected to the partition 41, and the support rod 43 is connected to the output end of a stepper motor 44, which is fixed on the other side of the outer wall of the discharge cylinder 4.

[0030] A dust-blocking cloth sleeve 45 is fitted onto the discharge end of the discharge cylinder 4.

[0031] The working principle of this utility model is as follows:

[0032] like Figures 1 to 4 As shown, a funnel is vertically formed by the first side plate 11, the second side plate 12, the third side plate 13, and the fourth side plate 14. The funnel has a rectangular cross-section. A discharge cylinder 4 is connected to the discharge end of the funnel. The discharge cylinder 4 contains a partition 41 and a spiral screw 40. A stepper motor 44 drives the support rod 43 and the partition 41 to rotate synchronously, and sets the partition 41 to be placed horizontally to block the discharge port of the discharge cylinder 4. Then, the annular wall 2 is placed into the funnel. The cross-sectional shape of the annular wall 2 matches the cross-sectional shape of the funnel. At the same time, the guide plate 10 extends into the guide groove 221. A limiting block 15 is provided on the guide plate 10 so that the guide block 22 is inserted into the guide plate 10. When the lower end face of the baffle 20 abuts against the upper end face of the funnel, and the inner side wall of the bent section 21 fits against the outer side wall of the funnel, the guide block 22 also abuts against the limiting block 15 to achieve limiting. The purpose of installing the annular wall 2 is as follows: In this way, the funnel, the annular wall 2, and the baffle 20 together form a cavity structure with an open bottom, which provides an airflow channel for the blowing mechanism and also prevents the leakage of chemical materials. After the guide plate 10 and the guide block 22 are inserted, they form a partition in the cavity structure. The partition has a clearance at the upper end for the air guide pipe 3 to pass around. Since the air outlet 311 emits air in a direction perpendicular to the conical surface and the through hole 23 emits air at an angle downward, the air outlet position of each air outlet 311 will obstruct the airflow at the lower end. In addition, when feeding, the material is concentrated at the lower end of the funnel. Even if material enters the cavity structure through the through hole 23, it cannot move upward to the gap position of the partition and cause leakage, thus fully ensuring the feeding rate of the material. If necessary, the clearance can be set as a clearance hole for the air guide pipe 3 to pass through, which will not be elaborated here.

[0033] Within this cavity structure, an air guide pipe 3 is arranged around the cavity, an air inlet pipe 30 passes through the first side plate 11 and is connected to the air guide pipe 3, and multiple air distribution pipes 31 are arranged along the slope of the funnel's conical surface and are connected to the air guide pipe 3. In this embodiment, eight air distribution pipes are preferred. Each air distribution pipe 31 has a plurality of air outlet holes 311 evenly arranged along the axial direction of the air distribution pipe 31. The air outlet holes 311 on two adjacent air distribution pipes 31 are staggered. In this way, multiple air blowing positions are set within the cavity structure to provide sufficient airflow to the corresponding through holes 23 on the annular wall 2. Furthermore, the walls of the through holes 23 are inclined downwards (e.g., Figure 1 (As shown in the figure) While assisting in air blowing and discharging, it can also prevent the material from being blown out towards the feeding pipe 16.

[0034] The lower opening of the cavity structure is directly blown into the discharge cylinder 4. In particular, during the blowing process, some material inevitably enters the cavity structure through the through hole 23. Under the blowing action of numerous air outlets 311, the multi-point aerodynamic action accelerates the movement of the material and makes it less likely to adhere to the inner sidewalls of the four side plates forming the funnel. This also effectively reduces and avoids material residue on the funnel, thus effectively improving the feeding efficiency.

[0035] Furthermore, the angle of the through hole 23 is preferably 30° with respect to the horizontal plane.

[0036] During use, the servo motor 42 remains on and drives the spiral screw 40 to rotate synchronously to agitate the material entering the hopper, so as to avoid the accumulation of material due to static material and reduce the material residue on the ring wall 2. In addition, the blowing effect of the air outlet 311 on the air distribution pipe 31 provides airflow thrust in the discharge direction of the gas blown out of the through hole 23, which fully ensures the discharge efficiency.

[0037] A dust-blocking cloth sleeve 45 is provided at the discharge end of the discharge cylinder 4, so that the material and the dust it carries can be discharged in a directional manner. When it is very close to the receiving position, it can reduce the spread of dust. Even better, under the premise of being connected to the receiving position, it can also prevent the spread of dust.

[0038] After use, close the air inlet pipe 30, pull up the baffle 20, and the ring wall 2 will move upwards simultaneously. The guide plate 10 will leave the guide groove 221, and the material residue on the ring wall 2 can be cleaned directly. The probability of residue accumulation on the inner wall of the funnel is greatly reduced, and only periodic cleaning is required. This not only reduces labor intensity but also improves production efficiency.

[0039] It should be noted that the specifications of the ring wall 2 are adapted to the specifications of the funnel. Therefore, when disassembling and assembling the ring wall 2, manual or mechanical hoisting can be used depending on the actual specifications. If mechanical hoisting is used, a hook pattern is pre-set on the baffle 20. At the same time, the hook pattern should not interfere with the use of the sealing cover 1. The structure is simple and the operation is convenient.

Claims

1. A pneumatic feeding device for chemical production, characterized in that: The device includes a funnel with a feeding pipe (16), a detachable ring wall (2) inside the funnel, an air blowing mechanism between the funnel and the ring wall (2), and a flow interception mechanism at the discharge end of the funnel. The ring wall (2) has several through holes (23) with the hole walls angled downwards. A horizontally extending baffle (20) is provided around the ring wall (2) along its outer shape. The extended end of the baffle (20) is integrally connected with a bent section (21). The lower end face of the baffle (20) abuts against the upper end face of the funnel, and the inner side wall of the bent section (21) fits against the outer side wall of the funnel.

2. The pneumatic feeding device for chemical production as described in claim 1, characterized in that: The funnel is formed by a vertical enclosure of a first side plate (11), a second side plate (12), a third side plate (13), and a fourth side plate (14). The upper surfaces of the four side plates abut against the lower surface of the baffle (20). The cross-section of the funnel is rectangular, and the cross-sectional shape of the ring wall (2) is adapted to the cross-sectional shape of the funnel.

3. The pneumatic feeding device for chemical production as described in claim 2, characterized in that: A sealing cover (1) is hinged to the baffle (20) at the position corresponding to the first side plate (11), and the feeding pipe (16) passes through the sealing cover (1).

4. A pneumatic feeding device for chemical production as described in claim 2, characterized in that: Each of the two adjacent side plates is provided with a guide plate (10) extending toward the center of the funnel. On the outer side wall of the ring wall (2), a guide block (22) is provided at the position corresponding to the guide plate (10). A guide groove (221) is provided on the guide block (22). The guide plate (10) extends into the guide groove (221) so that the ring wall (2) is connected to the funnel.

5. A pneumatic feeding device for chemical production as described in claim 4, characterized in that: A limiting block (15) is provided on the guide plate (10). The guide plate (10) extends into the guide groove (221), so that the guide block (22) is inserted into the guide plate (10) and abuts against the limiting block (15) to achieve the purpose of limiting the installation ring wall (2).

6. A pneumatic feeding device for chemical production as described in claim 2, characterized in that: The blowing mechanism includes an air guide pipe (3) located between the ring wall (2) and the funnel, an air inlet pipe (30) passing through the side plate at the corresponding end and connected to the air guide pipe (3), and a plurality of air distribution pipes (31) arranged along the slope direction of the cone surface of the funnel and connected to the air guide pipe (3). Each air distribution pipe (31) is provided with a plurality of air outlet holes (311) evenly arranged along the axial direction of the air distribution pipe (31). The air outlet holes (311) on two adjacent air distribution pipes (31) are staggered.

7. A pneumatic feeding device for chemical production as described in claim 6, characterized in that: The interception mechanism includes a discharge cylinder (4) connected to the discharge end of the funnel, a spiral screw (40) disposed inside the discharge cylinder (4), and a partition (41) movably disposed at the lower end of the discharge cylinder (4). The spiral screw (40) is connected to the output end of a servo motor (42) on one side, and the servo motor (42) is fixed on one side of the outer wall of the discharge cylinder (4).

8. A pneumatic feeding device for chemical production as described in claim 7, characterized in that: A support rod (43) is connected to the partition (41), and the support rod (43) is connected to the output end of a stepper motor (44). The stepper motor (44) is fixed on the other side of the outer wall of the discharge cylinder (4).

9. A pneumatic feeding device for chemical production as described in claim 8, characterized in that: A dust-blocking cloth sleeve (45) is fitted onto the discharge end of the discharge cylinder (4).

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