Polypropylene pellet hydraulic conveying transfer

Abstract

The present application relates to the technical field of material transfer device, especially relates to a polypropylene particle hydraulic conveying material transfer device, which comprises a transmission system and a shell, and is characterized by further comprising: a rotor arranged in the shell and linked with the transmission system; two end seats arranged on the two sides of the shell respectively, wherein the end seat comprises a distribution head stator, the upper end of the distribution head stator is provided with a drain hole, and the lower end is provided with a water inlet hole; wherein the rotor comprises a rotating shaft and a distribution head rotor in the rotating shaft, the rotating shaft is internally partitioned to form blade intervals, and the distribution head stator and the distribution head rotor are rotatably arranged together. The hydraulic conveying material transfer device is applied to the case that the import pressure is different from the export pressure, is suitable for unloading and discharging when the export pressure is kilogram-level pressure, meets the technical problem that the material transfer device cannot continuously work due to the pressure difference between the import and the export in the chemical production process, and the pressure difference can reach kilogram-level, so that the equipment realizes long-time continuous operation and has good practical effect.

Description

Technical Field

[0001] This invention relates to the field of transfer device technology, and more particularly to a hydraulic conveying transfer device for polypropylene particles. Background Technology

[0002] Polypropylene (PP) is a colorless, odorless, non-toxic, and translucent solid. It is a high-performance thermoplastic synthetic resin, a colorless, translucent, lightweight, general-purpose plastic with excellent chemical resistance, heat resistance, electrical insulation, high mechanical strength, and good abrasion resistance. PP is widely used in numerous fields, including machinery, automotive, electronics, construction, textiles, packaging, agriculture, forestry, fisheries, and the food industry. In recent years, the rapid development of my country's packaging, electronics, and automotive industries has greatly promoted the country's industrial development. Furthermore, due to its plasticity, PP materials are gradually replacing wood products, and its high strength, toughness, and abrasion resistance are gradually replacing the mechanical functions of metals. In addition, PP has excellent grafting and composite properties, giving it enormous application potential in concrete, textiles, packaging, and agriculture, forestry, and fisheries.

[0003] The transfer feeder is an indispensable piece of equipment in the polypropylene manufacturing process, used for drying, conveying dust, particles, and solids. However, the domestic market has long only had imported pressurized transfer feeders. Without a pressurized outlet, continuous unloading is impossible, severely impacting process continuity. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a hydraulic conveying and transferring device for polypropylene granules, so as to solve the technical problem that the current device only has a pressurized inlet, and when there is no pressurized outlet, it is impossible to carry out continuous unloading operation, which seriously affects the continuity of the process.

[0005] To achieve the above objectives, the present invention provides a polypropylene granule hydraulic conveying and transferring device, comprising: a transmission system and a housing; further comprising: a rotor disposed within the housing and connected to the transmission system; two end seats respectively disposed on both sides of the housing, each end seat comprising a distribution head stator, the distribution head stator having a drain hole at its upper end and a water inlet hole at its lower end; wherein, the rotor comprises a rotating shaft and a distribution head rotor within the rotating shaft, the rotating shaft being divided into blade sections, and the distribution head stator and the distribution head rotor being rotatably disposed together.

[0006] The distribution head stator is composed of a partition plate that is pressurized by a spring. The partition plate has two types of water holes, with the smaller hole at the bottom being the water inlet and the larger hole at the top being the water outlet. A liquid receiving tank is connected to the outside of the larger hole.

[0007] Furthermore, during the rotation of the distributor head rotor with the distributor head stator, high-pressure water enters when it coincides with the small hole of the distributor head stator, and pressure is released and residual water is discharged when it coincides with the large hole of the distributor head stator.

[0008] The rotating shaft further includes a partitioned rotor, and a filter seat is provided in the shaft tube of the blade interval in the blade section.

[0009] Furthermore, the filter base has a hole in the middle and strip-shaped grooves evenly distributed on its surface. The upper part of the grooves is fitted with a filter screen to prevent materials from entering while not affecting the entry and exit of high-pressure water.

[0010] The housing is further provided with an isolation block, and the blades on both sides of the blade interval in the blade section are in close contact with the isolation block.

[0011] Furthermore, the isolation block is composed of a wear-resistant block, a fixed seat, a cover plate, an adjusting shim, and a pad. The isolation block has a hexahedral structure with an inner arc surface and is connected to the fixed seat on the outside. Filler is added to both ends of the fixed seat, and a cover plate is connected to the upper end to press the filler. The arc of the isolation block is greater than the arc length between the two blades.

[0012] Furthermore, the isolation block is provided with a nitrogen pressurization port, which is located on the rear side of the cover plate. The pressurization gap is adjusted by the adjusting shim, and the nitrogen pressurization port applies pressure to the cover plate evenly through the pressurization gap.

[0013] Specifically, the nitrogen pressurization port applies pressure to the cover plate evenly through the pressurization gap, so that the isolation block is pressed tightly against the tip of the rotor blades, separating the high-pressure zone and the low-pressure zone.

[0014] The housing further includes an upper feed inlet, a bottom discharge outlet, and two side drain outlets, a flushing water inlet, and a backflushing water inlet.

[0015] The distribution head rotor consists of a shaft head, a spacer ring, a bearing, a compression spring, and a frame. The shaft head has round holes and is connected to the frame by a compression spring on the right side of the bearing support, so that the shaft head always has a force that fits against the spacer ring. The small hole on the lower side of the spacer ring is a high-pressure water hole, and the large hole on the upper side is a drainage and pressure relief hole.

[0016] The transmission system consists of a motor, a reducer, and large and small sprockets.

[0017] The end seat further includes a bearing housing and a packing seal to ensure that the rotor side does not leak water or air.

[0018] The hydraulic conveying transfer device further includes a frame, which consists of a bottom frame and support legs for supporting the equipment.

[0019] A material discharge process using the above-mentioned polypropylene particle hydraulic conveying transfer device includes the following steps:

[0020] The material enters the feed inlet from the upper low-pressure equipment. As the rotor rotates, it falls into the blade interval of the blade section. Both sides of the blade interval are in close contact with the isolation block to maintain the sealing performance of the isolation area.

[0021] As the rotor continues to rotate, the material rotates to the high-pressure zone of the rotor. At this time, the distributor rotor coincides with the small hole at the lower end of the distributor stator. High-pressure water begins to enter the shaft and is flushed out from the isolation block, reducing the pressure difference between the upper and lower parts of the material to equal levels. The material settles to the discharge port, emptying the blade area.

[0022] When the material settles to the bottom of the discharge port, it is quickly transported by high-pressure water to a height of tens of meters in the air, completing the high-altitude hydraulic conveying.

[0023] After the rotor blades discharge material, they continue to rotate and pass through the isolation block seal for the first pressure relief. High-pressure water enters the shaft partition from the isolation seat and continues to enter the large hole on the distributor head stator from the distributor head rotor, thus entering the liquid receiving box and being discharged from the liquid receiving box.

[0024] When the front blades in the inner blades of the rotating shaft detach from the isolation block, the blade area undergoes secondary depressurization. The remaining liquid and materials are discharged from the equipment through the drain holes on both sides of the shell. The residual materials enter the mixing tank and then enter the hydraulic conveying system.

[0025] Compared with the prior art, the advantages and beneficial effects of the present invention are as follows:

[0026] The polypropylene particle hydraulic conveyor provided by this invention is applicable to situations where the inlet and outlet pressures are different, especially in the field of unloading and discharging when the outlet pressure is in the kilogram range. It solves the technical problem of continuous operation caused by pressure difference between the inlet and outlet of the conveyor in the chemical production process, and the pressure difference can reach the kilogram level.

[0027] The polypropylene particle hydraulic conveyor provided by this invention adopts inter-shaft partitioning, and the material can be discharged into the high-pressure area through the distribution head and high-pressure water without affecting the continuity of the process; the isolation block ensures a good seal between the stator and the rotor, and the packing seal ensures a seal between the rotor and the end seat. The equipment can achieve long-term continuous operation and has good practical effect. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a front view of the polypropylene particle hydraulic conveying and transferring device shown in an embodiment of the present invention;

[0030] Figure 2 This is a side view of the polypropylene particle hydraulic conveying and transferring device shown in an embodiment of the present invention;

[0031] Figure 3 for Figure 1 The diagram shows the structure of the isolation block in the hydraulic conveyor for polypropylene granules.

[0032] Figure 4 for Figure 1 The diagram shows the structure of the distributor rotor in the hydraulic conveyor for polypropylene granules.

[0033] in:

[0034] 1-Transmission system;

[0035] 11-Motor;

[0036] 12-Reducer;

[0037] 13-Sprockets of different sizes;

[0038] 2-Shell;

[0039] 21-Isolation Block;

[0040] 211-Fixed base;

[0041] 2111 - Screw;

[0042] 212-Cover plate;

[0043] 213 - Adjusting shims;

[0044] 214 - Pad;

[0045] 215 - Packing material;

[0046] 216 - Wear-resistant block;

[0047] 217 - Nitrogen pressurization port;

[0048] 22-Inlet;

[0049] 23 - Discharge port;

[0050] 24-Drain port;

[0051] 25 - Flushing water inlet;

[0052] 26 - Backwash water inlet;

[0053] 3-Rotor;

[0054] 31-Shaft;

[0055] 311-Distributor head rotor;

[0056] 3111-Shaft head;

[0057] 3112 - Spacer ring;

[0058] 3113 - Bearing;

[0059] 3114 - Compression spring;

[0060] 312-Divided rotor;

[0061] 32-Filter holder;

[0062] 4-End seat;

[0063] 41-Distribution head stator;

[0064] 411-liquid receiving tank;

[0065] 42 - Bearing housing;

[0066] 43 - Packing seal;

[0067] 5-Rack;

[0068] 51-Bottom frame;

[0069] 52-outer leg. Detailed Implementation

[0070] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of the present invention, but it is not intended to limit the scope of protection of the appended claims.

[0071] Certain terms are used in this specification and the following claims to refer to specific components or parts. Those skilled in the art will understand that users or manufacturers may use different names or terms to refer to the same component or part. This specification and the following claims do not distinguish components or parts by differences in name, but rather by differences in function. The terms "comprising" and "including" used throughout this specification and the following claims are open-ended and should be interpreted as "including but not limited to". Furthermore, the term "connection" here includes any direct and indirect electrical connection means. Indirect electrical connection means include connections made through other means.

[0072] It should be noted that in the description of this invention, the terms "lateral", "longitudinal", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and "about", or "approximately", "substantially", "left and right", etc., indicating the orientation or positional relationship or parameters, are all based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, a specific size, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0073] like Figure 1-4 As shown, this embodiment of the invention provides a hydraulic conveying and transferring device for polypropylene granules, comprising: a transmission system 1 and a housing 2; wherein, the housing 2 further includes an upper inlet 22, a bottom outlet 23, and two side drain outlets 24, a flushing water inlet 25, and a backflushing water inlet 26; the transmission system 1 consists of a motor 11, a reducer 12, and large and small sprockets 13; and further includes: a rotor 3, disposed within the housing 2 and connected to the transmission system 1; and two end seats 4, respectively disposed on both sides of the housing 2. The 4 includes a distribution head stator 41, with a drain hole 411 at the upper end and a water inlet hole 412 at the lower end. The end seat 4 further includes a bearing seat 42 and a packing seal 43 to ensure that the rotor side does not leak water or air. The packing seal mainly ensures that the rotor side does not leak water or air. The rotor 3 includes a rotating shaft 31 and a distribution head rotor 311 inside the rotating shaft 31. The rotating shaft 31 is divided into blade sections. The distribution head stator 41 and the distribution head rotor 311 are rotatably mounted together. The hydraulic conveying transfer device further includes a frame 5, which consists of a bottom frame 51 and support legs 52 for supporting the equipment.

[0074] The distributor head stator 41 is composed of a spring-loaded pressure-pressurized partition plate. The partition plate has two types of water holes: a smaller hole at the lower end (water inlet 412) and a larger hole at the upper end (drainage outlet 411). A liquid receiving tank 411 is connected to the outside of the larger hole. During rotation with the distributor head stator 41, the distributor head rotor 311 receives high-pressure water when it aligns with the smaller hole and releases pressure and discharges residual water when it aligns with the larger hole.

[0075] The rotating shaft 31 further includes a partitioned rotor 312, and a filter seat 32 is provided in the shaft tube of the blade intervals within the blade section. The rotating shaft is partitioned internally, and high-pressure water enters the internal partitions through a small hole at the bottom of the distributor stator via an inlet, subsequently entering the lower blade section. This reduces the pressure difference of the material under high pressure between the blades, allowing the material to be discharged smoothly. The filter seat 32 has a central hole and evenly distributed strip-shaped grooves on its surface. A filter screen fits on the upper part of the grooves, preventing material from entering while not affecting the flow of high-pressure water. The filter seat 1044 is installed in the shaft section of the blade intervals within the rotor 104, allowing water to flow out through the filter screen of the filter seat 1044 while preventing material from entering the shaft tube.

[0076] The housing 2 is further provided with an isolation block 21, and the blades on both sides of the blade interval are in close contact with the isolation block 21. The isolation block 21 is composed of a wear-resistant block 216, a fixing seat 211, a cover plate 212, an adjusting shim 213, and a pad 214. The isolation block 21 has a hexahedral structure with an inner arc surface, and is connected to the fixing seat 211 by screws 2111 on the outside. The fixing seat 211 has filler 215 added to both ends to prevent process water leakage, and a cover plate 212 is connected to the upper end to press the filler 215. The arc of the isolation block 21 is larger than the arc length between the two blades.

[0077] Furthermore, the isolation block 21 is further provided with a nitrogen pressurization port 217, which is located on the rear side of the cover plate 212. The pressurization gap is adjusted by the adjusting shim 213. The nitrogen pressurization port 217 applies pressure to the cover plate 212 evenly through the pressurization gap. The nitrogen pressurization port at the rear end of the isolation block provides continuous pressure to the isolation block, improving the sealing performance. Specifically, the nitrogen pressurization port 217 applies pressure to the cover plate 212 evenly through the pressurization gap, causing the isolation block 21 to be tightly pressed against the blade tips of the rotor 3, isolating the high-pressure zone and the low-pressure zone.

[0078] The distribution head rotor 311 is composed of a shaft head 3111, a spacer ring 3112, a bearing 3113, a compression spring 3114, and a frame. The shaft head 3111 has round holes on each shaft head. The shaft head 3111 is connected to the frame on the right side of the bearing support by the compression spring 3114, so that the shaft head 3111 always has a force that fits against the spacer ring 3112. The small hole on the lower side of the spacer ring 3112 is a high-pressure water hole, and the large hole on the upper side is a drainage and pressure relief hole.

[0079] Another embodiment of the present invention provides a material unloading and discharge process using the above-mentioned polypropylene particle hydraulic conveying transfer device, comprising the following steps:

[0080] Material enters the feed inlet 22 from the upper low-pressure equipment. As the rotor 3 rotates, it falls into the blade interval of the blade area. Due to the presence of the filter seat, it will not enter the shaft tube. Both sides of the blade interval are in close contact with the isolation block 21 to maintain the sealing performance of the isolation area. In this embodiment of the invention, the isolation blocks are made of special materials, which are wear-resistant and ensure a tight seal with the blades, thus preventing the seal from becoming weak after long-term wear of the isolation blocks.

[0081] As rotor 3 continues to rotate, the material rotates to the high-pressure zone of rotor 3. At this time, the distributor rotor 311 coincides with the small hole at the lower end of the distributor stator 41. High-pressure water begins to enter the shaft 31 and is flushed out from the isolation block 21, reducing the pressure difference between the upper and lower parts of the material to equal levels. The material settles to the discharge port 23, emptying the blade area.

[0082] When the material settles to the bottom of the discharge port 23, it is quickly transported by high-pressure water to a height of tens of meters, completing the high-altitude hydraulic conveying.

[0083] After the material is discharged from the blade section of rotor 3, it continues to rotate and passes through the isolation block 21 for the first pressure relief. High pressure water enters the inner section of the shaft from the isolation seat and continues to enter the large hole on the stator 41 of the distribution head rotor 311, thus entering the liquid receiving box 411 and being discharged from the equipment from the liquid receiving box 411.

[0084] When the front blade in the blade of the rotating shaft 31 detaches from the isolation block 21, the blade area undergoes secondary depressurization. The remaining liquid and material are discharged from the equipment through the drain holes on both sides of the shell 2. The remaining material enters the mixing tank and then enters the hydraulic conveying system.

[0085] In summary, this embodiment of the invention employs inter-shaft partitioning, using a distributor head and high-pressure water to allow materials to be discharged into the high-pressure area without affecting process continuity. The isolation blocks effectively ensure a seal between the stator and rotor. Packing seals ensure a seal between the rotor and the end seats. The equipment achieves long-term continuous operation and demonstrates good practical performance. The polypropylene granule hydraulic conveyor provided in this embodiment of the invention features a rotor that rotates within the housing using frequency conversion speed regulation. The annular space between the rotor and the housing is sealed on the outside by packing and isolation units, while the inside is divided into independent chambers by partitions. Materials enter the conveyor upstream and are conveyed downstream as the rotor rotates. Because the system materials contain a certain amount of moisture, backwashing water is added to prevent material from adhering to the rotor. The backwashing water enters the internal cavity through a distributor at the rotor end, and under the action of the distributor head, pulse-type rinsing is achieved when the material rotates to the lower part.

[0086] Meanwhile, because this system needs to transport materials to higher-level equipment, the hydraulic conveying at the discharge port generates a certain pressure. If this pressure is not controlled, a large amount of process water will enter the upstream equipment, causing it to malfunction. Therefore, a dynamic sealing structure is installed on both sides of the transferor's housing. During dynamic sealing operation, some process water will inevitably enter the feed side after the rotor discharges material. This process water needs to be discharged as quickly as possible; therefore, leakage outlets are installed on both sides of the transferor's housing to prevent process water from entering the upstream equipment.

[0087] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A hydraulic conveyor for polypropylene granules, comprising: A transmission system and a housing; characterized in that: it further includes: a rotor, disposed within the housing and connected to the transmission system; two end seats, respectively disposed on both sides of the housing, each end seat including a distribution head stator, the distribution head stator being composed of a spring-loaded partition plate, the partition plate having two types of water holes, the lower small hole being a water inlet hole and the upper large hole being a drain hole, the large hole being connected to a liquid receiving tank; the distribution head stator having a drain hole at the upper end and a water inlet hole at the lower end; wherein, the rotor includes a rotating shaft and a distribution head rotor within the rotating shaft, the rotating shaft being divided into blade sections, the distribution head stator and the distribution head rotor being rotatably mounted together; The rotating shaft further includes a partitioned rotor, and a filter seat is provided in the shaft tube of the blade interval in the blade section; the filter seat has a hole in the middle and strip-shaped grooves are evenly distributed on the surface, and a filter screen is fitted on the upper part of the grooves to prevent material from entering while not affecting the entry and exit of high-pressure water.

2. The polypropylene granule hydraulic conveying transfer device according to claim 1, characterized in that: During the rotation of the distributor head rotor with the distributor head stator, high-pressure water enters when it coincides with the small hole of the distributor head stator, and the pressure is released and residual water is discharged when it coincides with the large hole of the distributor head stator.

3. The polypropylene granule hydraulic conveying transfer device according to claim 1, characterized in that: The housing is further provided with an isolation block, and the blades on both sides of the blade interval in the blade section are in close contact with the isolation block.

4. The polypropylene granule hydraulic conveying transfer device according to claim 3, characterized in that: The isolation block consists of a wear-resistant block, a fixed seat, a cover plate, an adjusting shim, and a pad. The isolation block has a hexahedral structure with an inner arc surface and is connected to the fixed seat on the outside. Filler is added to both ends of the fixed seat, and a cover plate is connected to the upper end to press the filler. The arc of the isolation block is greater than the arc length between the two blades.

5. The polypropylene granule hydraulic conveying transfer device according to claim 4, characterized in that: The isolation block is further provided with a nitrogen pressurization port, which is located on the rear side of the cover plate. The pressurization gap is adjusted by the adjusting shim, and the nitrogen pressurization port applies pressure to the cover plate evenly through the pressurization gap.

6. The polypropylene granule hydraulic conveying transfer device according to claim 5, characterized in that... The nitrogen pressurization port applies pressure to the cover plate evenly through the pressurization gap, so that the isolation block is pressed tightly against the tip of the rotor blades, separating the high-pressure area and the low-pressure area.

7. The polypropylene granule hydraulic conveying transfer device according to claim 1 or 3, characterized in that: The housing further includes an upper feed inlet, a bottom discharge outlet, and two side drain outlets, a flushing water inlet, and a backflushing water inlet.

8. The polypropylene granule hydraulic conveying transfer device according to claim 1, characterized in that: The distributor rotor consists of a shaft head, a spacer ring, a bearing, a compression spring, and a frame. The shaft head has round holes on each shaft head. The shaft head is connected to the frame on the right side of the bearing support by a compression spring, so that the shaft head always has a force that fits against the spacer ring. The small hole on the lower side of the spacer ring is a high-pressure water hole, and the large hole on the upper side is a drainage and pressure relief hole.

9. The polypropylene granule hydraulic conveying and transferring device according to claim 1, characterized in that: The transmission system consists of a motor, a reducer, and large and small sprockets.

10. The polypropylene granule hydraulic conveying transfer device according to claim 1, characterized in that: The end seat further includes a bearing housing and a packing seal to ensure that the rotor side does not leak water or air.

11. The polypropylene granule hydraulic conveying transfer device according to claim 1, characterized in that: The hydraulic conveying transfer device further includes a frame, which consists of a bottom frame and support legs for supporting the equipment.

12. A material discharge process using a polypropylene granule hydraulic conveying transfer device as described in any one of claims 1-11, characterized in that: Includes the following steps: The material enters the feed inlet from the upper low-pressure equipment. As the rotor rotates, it falls into the blade interval of the blade section. Both sides of the blade interval are in close contact with the isolation block to maintain the sealing performance of the isolation area. As the rotor continues to rotate, the material rotates to the high-pressure zone of the rotor. At this time, the distributor rotor coincides with the small hole at the lower end of the distributor stator. High-pressure water begins to enter the shaft and is flushed out from the isolation block, reducing the pressure difference between the upper and lower parts of the material to equal levels. The material settles to the discharge port, emptying the blade area. When the material settles to the bottom of the discharge port, it is quickly transported by high-pressure water to a height of tens of meters in the air, completing the high-altitude hydraulic conveying. After the rotor blades discharge material, they continue to rotate and pass through the isolation block seal for the first pressure relief. High-pressure water enters the shaft partition from the isolation seat and continues to enter the large hole on the distributor head stator from the distributor head rotor, thus entering the liquid receiving box and being discharged from the liquid receiving box. When the front blades in the inner blades of the rotating shaft detach from the isolation block, the blade area undergoes secondary depressurization. The remaining liquid and materials are discharged from the equipment through the drain holes on both sides of the shell. The residual materials enter the mixing tank and then enter the hydraulic conveying system.

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