Roots blower vacuum feeding machine

Abstract

The utility model discloses a kind of Roots blower vacuum feeding machines, including feeding shell, the inside upper end of feeding shell is equipped with baffle, the upper side of baffle is equipped with evenly distributed recess, the inside of recess is vertically inserted with filter core, the inner wall upper end of feeding shell is connected with Roots blower by air pipe, still include dismounting mechanism;Dismounting mechanism: it includes dovetail groove, L type slide, synchronous assembly and adjusting assembly, the upper side of baffle is evenly set in annular respectively by dovetail groove, this Roots blower vacuum feeding machine, by transmission element, first level drives multistage operation, can be operated to the limiting element of filter part synchronously, so that the filter unit in Roots blower vacuum feeding machine is replaced, only one step can be realized The installation limit or unlimit of all filter units, improve the operation convenience of staff to the filter unit replacement in Roots blower vacuum feeding machine.

Description

Technical Field

[0001] This utility model relates to the field of vacuum feeding technology, specifically a Roots blower vacuum feeding machine. Background Technology

[0002] Plastic masterbatch refers to granular material produced during plastic processing and molding by mixing various additives, fillers, and a small amount of carrier resin for ease of operation. This mixture is then processed through equipment such as extruders, involving metering, mixing, melting, extrusion, and pelletizing. Plastic masterbatch is fed using a vacuum feeder during use. (Existing technology: Authorization Publication No. CN 211712103) U's patent discloses a vacuum feeder, including a main housing with an inner chamber, multiple negative pressure drive branches, and multiple sets of filter elements, each of which includes a first switching valve; the inner chamber includes an isolation chamber, a filter element chamber, and a storage chamber, with the multiple sets of filter elements respectively installed in the filter element chamber; the isolation chamber forms multiple independent sub-cavities, and the top of each set of filter elements is connected to one of the negative pressure drive branches via one of the sub-cavities; the bottom of the filter element chamber is connected to the storage chamber, and the storage chamber is connected to each of the multiple sub-cavities; the vacuum feeder also includes a backflush air source device with multiple sets of first backflush components; each set of first backflush components includes at least one first... A blower is provided, and the blower port of each blower is inserted into the bottom of the filter element. This utility model can backflush and clean the bottom of the filter element, and the storage chamber can be kept under negative pressure during backflush cleaning. During the use of the device, the filter element is set to filter impurities in the vacuum gas, so as to prevent impurities from entering the vacuuming part and interfering with the mechanical transmission inside the vacuuming equipment. The filter element itself has a service life, so it needs to be replaced regularly. However, the device uses multiple sets of filter elements, and each filter element is installed and fixed separately. When the filter element is replaced, the staff needs to install and remove the filter elements one by one. There is room for improvement. Therefore, we propose a Roots blower vacuum feeder. Utility Model Content

[0003] The technical problem this invention aims to solve is to overcome existing defects and provide a Roots blower vacuum feeder. This device, through a transmission element, drives multiple stages of operation in a single stage, enabling simultaneous operation of the limiting elements in the filter section. This allows for the replacement of filter units within the Roots blower vacuum feeder with a single step, enabling the installation or release of all filter units' limits. This improves the ease of operation for personnel replacing filter units within the Roots blower vacuum feeder and effectively solves the problems in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a Roots blower vacuum feeder, comprising a feeder shell, wherein a partition is provided at the upper end of the feeder shell, and uniformly distributed grooves are provided on the upper side of the partition, wherein filter elements are vertically inserted into the grooves, and a Roots blower is connected to the upper end of the inner wall of the feeder shell through an air pipe, and also includes a disassembly and assembly mechanism.

[0005] The disassembly and assembly mechanism includes dovetail grooves, L-shaped slides, a synchronization component, and an adjustment component. The dovetail grooves are evenly and circularly arranged on the upper side of the partition. Inside each dovetail groove, two symmetrically distributed L-shaped slides are slidably connected. Each L-shaped slide is installed in conjunction with an adjacent filter element. A synchronization component is provided between the L-shaped slides, and an adjustment component is provided between the synchronization component and the partition. This device, through a transmission element, drives multiple stages of operation in a single stage, enabling synchronous operation of the limiting elements of the filtration section. This allows for the replacement of filter units in the Roots blower vacuum feeder to be completed in a single step, improving the ease of operation for personnel replacing filter units in the Roots blower vacuum feeder.

[0006] Furthermore, it also includes a microcontroller, which is located outside the feeding shell. The input terminal of the microcontroller is electrically connected to an external power supply, and the output terminal of the microcontroller is electrically connected to the input terminal of the Roots blower, which facilitates the control of electrical components within the device.

[0007] Furthermore, the disassembly and assembly mechanism also includes guide ramps, which are respectively set at one end of the bottom of the L-shaped slide away from the center of the adjacent dovetail groove. By using the contact and compression between the ramps and the outer edge of the upper side of the filter element, the filter element is completely pressed into the corresponding groove.

[0008] Furthermore, the synchronization component includes guide rods, annular seats, connecting seats, contact slide rods, and inclined slide grooves. The guide rods are respectively disposed at the front and rear ends of the upper side of the partition plate. An annular seat is vertically slidably connected between two guide rods. A connecting seat is provided on the lower side of the annular seat in a ring, and contact slide rods are provided at both ends of the middle part of the connecting seat. An inclined slide groove is opened at the upper end of each L-shaped slide rod. The contact slide rods slide in contact with the adjacent inclined slide grooves, so that the limiting elements of the filter components in the Roots blower vacuum feeder can operate synchronously.

[0009] Furthermore, the adjustment assembly includes a stud, a threaded cylinder, and a handwheel. The stud is located on the upper side of the partition plate. The threaded cylinder is rotatably connected to the inside of the annular seat via a bearing. The lower end of the threaded cylinder is threadedly connected to the stud, and the upper end of the threaded cylinder is equipped with a handwheel to adjust the limiting element of the filter component inside the Roots blower vacuum feeder.

[0010] Furthermore, the adjustment assembly also includes a bellows, which is disposed between the upper side of the partition and the lower side of the annular seat. The bellows is movably sleeved on the outer end of the stud to wrap, lubricate and protect the stud inside the Roots blower vacuum feeder.

[0011] Furthermore, the upper side of the feeding shell is provided with a top cover, and a back-blowing device is installed on the upper side of the top cover. The input end of the back-blowing device is electrically connected to the output end of the microcontroller to pneumatically clean the impurities adsorbed in the filter part inside the Roots blower vacuum feeder.

[0012] Furthermore, a feed pipe is provided through the upper end of the inner wall of the feeding shell, and a discharge pipe is provided through the conical bottom wall of the feeding shell. A pneumatic butterfly valve is connected in series in the middle of the discharge pipe. The input end of the pneumatic butterfly valve is electrically connected to the output end of the microcontroller to control the discharge of plastic masterbatch in the Roots blower vacuum feeder.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This Roots blower vacuum feeder has the following advantages:

[0014] When using the Roots blower vacuum feeder, the dovetail groove, L-shaped slide, guide slope, synchronization component, and adjustment component, through threaded transmission and sliding rod slope extrusion linkage, drive multiple stages in one stage. This allows for the synchronous operation of the limiting elements of the filter section, so that when replacing the filter units in the Roots blower vacuum feeder, only one step is needed to achieve the installation limit or release limit of all filter units, improving the convenience of the operator in replacing the filter units in the Roots blower vacuum feeder. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the partition structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the L-shaped slide structure of this utility model;

[0019] Figure 5 This is an enlarged structural diagram of point A in this utility model.

[0020] In the diagram: 1. Feeding shell, 2. Microcontroller, 3. Top cover, 4. Partition, 5. Groove, 6. Filter element, 7. Disassembly and assembly mechanism, 71. Dovetail groove, 72. L-shaped slide, 73. Guide slope, 74. Synchronization component, 741. Guide rod, 742. Ring seat, 743. Connecting seat, 744. Contact slide rod, 745. Inclined slide groove, 75. Adjustment component, 751. Stud, 752. Threaded cylinder, 753. Handwheel, 754. Bellows, 8. Air pipe, 9. Roots blower, 10. Backflush device, 11. Feed pipe, 12. Discharge pipe, 13. Pneumatic butterfly valve. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5This embodiment provides a technical solution: a Roots blower vacuum feeder, including a feeding shell 1. A partition 4 is provided at the upper end of the inner wall of the feeding shell 1. Uniformly distributed grooves 5 are formed on the upper side of the partition 4. Filter elements 6 are vertically inserted into the grooves 5. A Roots blower 9 is connected to the upper end of the inner wall of the feeding shell 1 via an air pipe 8. The device also includes a microcontroller 2, located outside the feeding shell 1. The input terminal of the microcontroller 2 is electrically connected to an external power source, and the output terminal of the microcontroller 2 is electrically connected to the input terminal of the Roots blower 9. A top cover 3 is provided on the upper side of the feeding shell 1. A back-blowing device 10 is installed on the upper side of the top cover 3. The input terminal of the back-blowing device 10 is electrically connected to the output terminal of the microcontroller 2. The inner wall of the feeding shell 1... A feed pipe 11 is installed through the upper part of the wall, and a discharge pipe 12 is installed through the conical bottom wall of the feeding shell 1. A pneumatic butterfly valve 13 is connected in series in the middle of the discharge pipe 12. The input end of the pneumatic butterfly valve 13 is electrically connected to the output end of the microcontroller 2, which fixes the external feed pipe to the feed pipe 11. The other end of the external feed pipe is connected to the plastic masterbatch that needs to be fed. When the device is used to vacuum feed the plastic masterbatch, the microcontroller 2 starts the Roots blower 9. The Roots blower 9 operates by the synchronous counter-rotation of two internal involute impellers to achieve gas compression and conveying. During operation, the rotor and the cylinder form a sealed cavity. As the impellers rotate, the gas is pushed from the inlet to the outlet, thus the Roots blower 9... The air inlet, through the air pipe 8, performs a vacuum operation on the inside of the feeding shell 1. When the device is under negative pressure, the vacuum pressure difference forces the plastic masterbatch from the external material pipe into the device through the feed pipe 11, thus achieving vacuum feeding of the plastic masterbatch by the Roots blower. Simultaneously, the airflow entering the device through the feed pipe 11 passes through the filter element 6 and enters the air pipe 8. The filter element 6 prevents the Roots blower 9 from being affected by excessive impurities in the pumped gas. During the unloading operation of the Roots blower vacuum feeder, the microcontroller 2 activates the pneumatic butterfly valve 13, causing the vacuum-fed plastic masterbatch to be discharged through the discharge pipe 12. At the same time, the microcontroller... Machine 2 starts the back-flushing device 10. The back-flushing device 10 contains components such as pipe assembly, pulse valve, time relay, and solenoid valve. The nozzle of the back-flushing device 10 is located on the top wall of the top cover 3. When the time relay inside the back-flushing device 10 reaches the set time, the time relay sends a signal to the solenoid valve inside the back-flushing device to open it. Then the pulse valve inside the back-flushing device 10 opens, compressing the external air. The compressed gas enters the upper end of the internal partition 4 of the device and flows from the inside to the outside along the filter element 6. The airflow impact cleans the plastic masterbatch or impurities adhering to the outside of the filter element 6, preventing the filter element 6 from affecting the vacuum feeding effect of the device due to the blockage of its own filter holes after long-term use. It also includes a disassembly and assembly mechanism 7.

[0023] The disassembly / assembly mechanism 7 includes dovetail grooves 71, L-shaped slides 72, a synchronization component 74, and an adjustment component 75. The dovetail grooves 71 are evenly and circularly arranged on the upper side of the partition 4. Two symmetrically distributed L-shaped slides 72 are slidably connected inside each dovetail groove 71. Each L-shaped slide 72 is installed in conjunction with an adjacent filter element 6. A synchronization component 74 is provided between the L-shaped slides 72, and an adjustment component 75 is provided between the synchronization component 74 and the partition 4. The disassembly / assembly mechanism 7 also includes guide ramps 73, which are respectively located at the bottom end of each L-shaped slide 72 away from the center of the adjacent dovetail groove 71. The synchronization component 74 includes a guide rod 741, an annular seat 742, a connecting seat 743, a contact slide rod 744, and an inclined slide groove 745. 1. Two guide rods 741 are vertically slidably connected to each other at the front and rear ends of the upper side of the partition 4. An annular seat 742 is provided between the two guide rods 741. The lower side of the annular seat 742 is provided with annularly evenly distributed connecting seats 743. The middle two ends of the connecting seats 743 are provided with contact slide rods 744. The upper end of the L-shaped slide seat 72 is provided with an inclined slide groove 745. The contact slide rods 744 are in sliding contact with the adjacent inclined slide grooves 745. The adjusting component 75 includes a stud 751, a threaded cylinder 752 and a handwheel 753. The stud 751 is provided on the upper side of the partition 4. The threaded cylinder 752 is rotatably connected to the inside of the annular seat 742 through a bearing. The lower end of the threaded cylinder 752 is threadedly connected to the stud 751. The upper end of the threaded cylinder 752 is provided with a handwheel 753. 75 also includes a bellows 754, which is located between the upper side of the partition 4 and the lower side of the annular seat 742. The bellows 754 is movably sleeved on the outer end of the stud 751. When replacing the filter element 6 after the Roots blower vacuum feeder has been used for a period of time, first remove the fixing bolts on the top cover 3, then move the top cover 3 away from the device. Then, the operator turns the handwheel 753 to drive the threaded cylinder 752 to rotate. During the rotation of the threaded cylinder 752, it is threadedly connected to the stud 751, thereby driving the annular seat 742 to slide vertically down along the guide rod 741. The annular seat 742 drives the corresponding connecting seat 743 to move down synchronously. The connecting seat 743 drives the corresponding contact slide rod 744 to move down synchronously. During the downward movement of 744, the sliding compression between itself and the inclined groove 745 causes the two L-shaped slides 72 located in the same dovetail groove 71 to move closer together along the corresponding dovetail groove 71. This causes the bottoms of the two L-shaped slides 72 located in the same dovetail groove 71 to move away from the upper surface of the corresponding filter element 6, thereby simultaneously releasing the vertical movement restriction on all filter elements 6. Subsequently, the operator removes the filter elements 6 one by one from the groove 5 and replaces them. After the filter element 6 is replaced, the operator rotates the handwheel 753 in the opposite direction. Using the same principle, the two L-shaped slides 72 located in the same dovetail groove 71 move away from each other along the corresponding dovetail groove 71. During this process, when the L-shaped slides 72 are about to contact the adjacent filter element 6,The L-shaped slide 72 automatically presses the filter element 6 into the corresponding groove 5 by pressing the guide slope 73 on the upper outer edge of the filter element 6 into contact with it. Then, part of the L-shaped slide 72 moves to the upper side of the filter element 6, thus vertically limiting the filter element 6. The exposed end of the stud 751 is sealed and lubricated by the bellows 754, a corrugated structure made of multiple layers of stacked metal sheets. Its working principle is to achieve self-adaptive sealing through elastic deformation to maintain good sealing performance. This device, through a transmission element, drives multiple stages of operation, enabling simultaneous operation of the limiting elements in the filtration section. This allows for the replacement of filter units in the Roots blower vacuum feeder with only one step, achieving the installation or release of all filter units' limits, thus improving the convenience of filter unit replacement for operators.

[0024] The working principle of the Roots blower vacuum feeder provided by this utility model is as follows: The external material pipe is fixedly connected to the feed pipe 11, and the other end of the external material pipe is connected to the plastic masterbatch to be fed. When the device is used to vacuum feed the plastic masterbatch, the single-chip microcomputer 2 starts the Roots blower 9. The Roots blower 9 operates by achieving gas compression and conveying through the synchronous counter-rotation of two internal involute impellers. During operation, the rotor and the cylinder form a sealed cavity. As the impeller rotates, the gas is pushed from the air inlet to the air outlet, thereby the air inlet of the Roots blower 9 performs a vacuum operation on the inside of the feeding shell 1 through the air pipe 8. When the inside of the device is in a negative pressure state, the plastic masterbatch in the external material pipe enters the device through the feed pipe 11 through the vacuum pressure difference. Internally, the Roots blower performs vacuum feeding of plastic masterbatch. Simultaneously, the airflow entering the device through the feed pipe 11 passes through the filter element 6 and enters the air pipe 8. The filter element 6 prevents the Roots blower 9 from being affected by excessive impurities in the pumped gas. During the unloading operation of the Roots blower vacuum feeder, the microcontroller 2 activates the pneumatic butterfly valve 13, allowing the vacuum-fed plastic masterbatch to be discharged through the discharge pipe 12. At the same time, the microcontroller 2 activates the back-blowing device 10. The back-blowing device 10 contains components such as pipe assemblies, pulse valves, time relays, and solenoid valves. The nozzle of the back-blowing device 10 is located on the top wall of the top cover 3. When the time relay inside the back-blowing device 10 reaches the set time, the timer... The relay sends a signal to the solenoid valve in the backflush device to open it. Then, the pulse valve in the backflush device 10 opens, compressing external air. The compressed gas enters the upper part of the internal partition 4 and flows along the filter element 6 from the inside out. The airflow impact cleans the plastic granules or impurities adhering to the outside of the filter element 6, preventing the filter element 6 from affecting the vacuum feeding effect due to clogging of its filter pores after long-term use. When replacing the filter element 6 after a period of use, first remove the fixing bolts on the top cover 3, then remove the top cover 3 from the top of the device. Then, the operator turns the handwheel 753 to drive the threaded cylinder 752 to rotate. During the rotation of the threaded cylinder 752, it connects with the stud 751 through the thread, thus... The ring seat 742 slides vertically down along the guide rod 741, and the ring seat 742 drives the corresponding connecting seat 743 to move down synchronously. The connecting seat 743 drives the corresponding contact slide rod 744 to move down synchronously. During the downward movement of the contact slide rod 744, through the sliding and pressing between itself and the inclined slide groove 745, the two L-shaped slides 72 located in the same dovetail groove 71 move closer to each other along the corresponding dovetail groove 71, so that the bottom of the two L-shaped slides 72 located in the same dovetail groove 71 moves away from the upper surface of the corresponding filter element 6, thereby simultaneously releasing the vertical movement limit on all filter elements 6. Then, the operator removes the filter elements 6 one by one from the groove 5 and replaces them. After the filter element 6 is replaced, the operator rotates the handwheel 753 in the reverse direction.Using the same principle, two L-shaped slides 72 located within the same dovetail groove 71 move away from each other along their respective grooves. During this process, when both L-shaped slides 72 are about to contact the adjacent filter element 6, the guide slope 73 on the L-shaped slide 72 presses against the upper outer edge of the corresponding filter element 6, automatically pressing the filter element 6 into the corresponding groove 5. Subsequently, part of the L-shaped slide 72 moves to the upper side of the corresponding filter element 6, thus vertically limiting the filter element 6. The exposed end of the stud 751 is sealed and lubricated by a bellows 754, a corrugated structure made of multiple layers of stacked metal sheets. Its working principle is to achieve self-adaptive sealing through elastic deformation to maintain good sealing performance.

[0025] It is worth noting that the microcontroller 2 disclosed in the above embodiments can be NY8A050D, the Roots blower 9 can be DSR-G high-pressure Roots blower, the backflushing device 10 can be LSP-221 backflushing device, and the pneumatic butterfly valve 13 can be D671F16 pneumatic butterfly valve. The microcontroller 2 controls the operation of the Roots blower 9, the backflushing device 10, and the pneumatic butterfly valve 13 using methods commonly used in the prior art.

[0026] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A Roots blower vacuum feeder, comprising a feeding shell (1), wherein a partition (4) is provided at the upper end of the inner side of the feeding shell (1), and uniformly distributed grooves (5) are provided on the upper side of the partition (4), wherein filter elements (6) are vertically inserted into the grooves (5), and a Roots blower (9) is connected to the upper end of the inner wall of the feeding shell (1) through an air pipe (8), characterized in that: It also includes a disassembly and assembly mechanism (7); The disassembly and assembly mechanism (7) includes a dovetail groove (71), an L-shaped slide (72), a synchronization component (74), and an adjustment component (75). The dovetail grooves (71) are evenly arranged in a ring on the upper side of the partition (4). Two symmetrically distributed L-shaped slides (72) are slidably connected inside each dovetail groove (71). The L-shaped slides (72) are installed in conjunction with the adjacent filter element (6). A synchronization component (74) is provided between the L-shaped slides (72), and an adjustment component (75) is provided between the synchronization component (74) and the partition (4).

2. The vacuum feeder for a Roots blower according to claim 1, characterized in that: It also includes a microcontroller (2), which is located outside the feed shell (1). The input terminal of the microcontroller (2) is electrically connected to an external power supply, and the output terminal of the microcontroller (2) is electrically connected to the input terminal of the Roots blower (9).

3. The vacuum feeder for a Roots blower according to claim 1, characterized in that: The disassembly and assembly mechanism (7) also includes a guide ramp (73), which is respectively located at one end of the bottom of the L-shaped slide (72) away from the center of the adjacent dovetail groove (71).

4. A Roots blower vacuum feeder according to claim 1, characterized in that: The synchronization component (74) includes a guide rod (741), an annular seat (742), a connecting seat (743), a contact slide rod (744), and an inclined slide groove (745). The guide rod (741) is respectively disposed at the front and rear ends of the upper side of the partition plate (4). An annular seat (742) is vertically slidably connected between the two guide rods (741). The lower side of the annular seat (742) is provided with an annularly evenly distributed connecting seat (743). The middle two ends of the connecting seat (743) are provided with contact slide rods (744). The upper end of the L-shaped slide seat (72) is provided with an inclined slide groove (745). The contact slide rod (744) slides in contact with the adjacent inclined slide groove (745).

5. A Roots blower vacuum feeder according to claim 4, characterized in that: The adjustment assembly (75) includes a stud (751), a threaded cylinder (752), and a handwheel (753). The stud (751) is located on the upper side of the partition (4). The threaded cylinder (752) is rotatably connected to the inside of the annular seat (742) through a bearing. The lower end of the threaded cylinder (752) is threadedly connected to the stud (751), and the upper end of the threaded cylinder (752) is provided with a handwheel (753).

6. A Roots blower vacuum feeder according to claim 5, characterized in that: The adjustment assembly (75) also includes a bellows (754), which is disposed between the upper side of the partition (4) and the lower side of the annular seat (742), and the bellows (754) is movably sleeved on the outer end of the stud (751).

7. A Roots blower vacuum feeder according to claim 2, characterized in that: The upper side of the feeding shell (1) is provided with a top cover (3), and a back-blowing device (10) is installed on the upper side of the top cover (3). The input end of the back-blowing device (10) is electrically connected to the output end of the microcontroller (2).

8. A Roots blower vacuum feeder according to claim 2, characterized in that: The upper part of the inner wall of the upper shell (1) is provided with a feed pipe (11), and the conical bottom wall of the upper shell (1) is provided with a discharge pipe (12). A pneumatic butterfly valve (13) is connected in series in the middle of the discharge pipe (12), and the input end of the pneumatic butterfly valve (13) is electrically connected to the output end of the microcontroller (2).

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