A double screw degassing auger

Abstract

The application relates to the technical field of material conveying, in particular to a double-spiral degassing auger which comprises a mounting frame, a guide conveying cavity is arranged on the mounting frame, a guide conveying shaft for guiding and conveying materials is rotationally connected in the guide conveying cavity, a guide conveying motor for driving the guide conveying shaft to rotate is arranged on one side of the mounting frame, a discharging cavity is communicated and arranged at the end of the guide conveying cavity far from the guide conveying motor, a feeding port is through-arranged on the side of the guide conveying cavity close to the guide conveying motor, a feeding cavity is communicated and arranged on the feeding port, the feeding cavity comprises a cavity body, a connecting pipe is communicated and arranged between the bottom of the cavity body and the feeding port, and an anti-blocking block for preventing blockage is arranged in the connecting pipe. In the application, when the materials enter the guide conveying cavity, the materials can enter more uniformly under the action of the anti-blocking block and are relatively loose, so that the materials are more easily degassed after entering the guide conveying cavity, and air in the internal gaps of the materials after being extruded can be easily discharged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of material conveying, in particular to a double-spiral degassing auger. BACKGROUND

[0002] The double-spiral degassing auger is a device for processing high-viscosity and gas-containing materials, mainly used in food, chemical, pharmaceutical and other industries, to remove bubbles or volatile gases in the materials through mechanical action and vacuum environment.

[0003] Chinese patent No. CN214915835U discloses a granulator forced feeding degassing improvement mechanism, which comprises a feeding hopper, a first auger shaft arranged in the feeding hopper, a first variable pitch auger arranged on the first auger shaft, a feeding cylinder, a second variable pitch auger arranged on a second auger shaft movably arranged in the feeding cylinder, a degassing mechanism comprising a fan for vacuum pumping, a dust filter cylinder arranged in the feeding cylinder, and a dust removal and purification box connected to the fan.

[0004] In the scheme, during the process of passing through the feeding hopper into the feeding cylinder, the material is subjected to preliminary extrusion, and if the material is accumulated at the communication position, the relatively dense material is prone to be blocked, thereby affecting the use of the entire device. SUMMARY

[0005] The present application aims to provide a double-spiral degassing auger to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0007] A double-spiral degassing auger comprises a mounting frame, a guide conveying cavity is arranged on the mounting frame, a guide conveying shaft for guiding and conveying materials is rotatably connected in the guide conveying cavity, a guide conveying motor is arranged on one side of the mounting frame for driving the guide conveying shaft to rotate, an outlet cavity is communicatively arranged at the end of the guide conveying cavity away from the guide conveying motor, a feeding port is through-arranged on the side of the guide conveying cavity close to the guide conveying motor, a feeding cavity is communicatively arranged on the feeding port, the feeding cavity comprises a cavity body, a connecting pipe is communicatively arranged between the bottom of the cavity body and the feeding port, and an anti-blocking block is arranged in the connecting pipe to prevent blockage.

[0008] As a further scheme of the present application: the feeding inlet and the discharging cavity are provided with a back flushing opening and a degassing opening for discharging, and the guide shaft comprises a first auger and a second auger arranged in parallel.

[0009] As a further scheme of the present application: the guide motor comprises a first motor and a second motor, and the first motor and the second motor are respectively connected with the first auger and the second auger.

[0010] As a further scheme of the present application: a third auger is rotatably connected in the cavity, one end of the third auger is rotatably connected with a third motor, the anti-blocking block is slidably connected in the inner side of the connecting pipe, a ring sleeve is fixedly sleeved on the outer periphery of the end of the third auger away from the third motor, the anti-blocking block and the ring sleeve are slidably matched, a scraping assembly is movably attached above the anti-blocking block, a feeding opening is throughly arranged on the upper side of the cavity, and a feeding cover is assembled and connected in the feeding opening.

[0011] As a further scheme of the present application: a plurality of threaded holes are throughly arranged on the outer periphery of the ring sleeve, guide grooves are symmetrically embedded on both sides of the ring sleeve, one end of the anti-blocking block is slidably matched with the guide grooves, and wave grooves are embedded on the inner wall of the connecting pipe, and the other end of the anti-blocking block is slidably matched with the wave grooves.

[0012] As a further scheme of the present application: the anti-blocking block comprises a fan-shaped block, the edge of the fan-shaped block is slidably attached with the inner wall of the connecting pipe, the fan-shaped block is slidably sleeved on the outer periphery of the ring sleeve, and first sliding protrusions slidably matched with the guide grooves are symmetrically protruded on both sides of the ring sleeve, and second sliding protrusions slidably matched with the wave grooves are connected on one side of the fan-shaped block attached with the connecting pipe.

[0013] As a further scheme of the present application: a cavity is embedded in the fan-shaped block, sliding rods are symmetrically hinged on the upper and lower sides in the cavity, counterweights are slidably matched on the outer periphery of the sliding rods, flanges are arranged on the end of the sliding rods away from the inner wall of the cavity to prevent the counterweights from being separated from the sliding rods, and the two sliding rods opposite in the vertical direction are connected through connecting springs.

[0014] As a further scheme of the present application: the scraping assembly comprises a sliding ring slidably sleeved on the outer periphery of the ring sleeve and a fixed ring slidably connected on the inner wall of the cavity, the fixed ring is vertically slidably connected on the inner wall of the cavity through a guide rail, and a plurality of scrapers are fixedly connected between the fixed ring and the sliding ring.

[0015] As a further scheme of the present application: the feeding cover comprises a cover plate matched in size with the feeding opening, side stops are symmetrically arranged on both sides of the cover plate, and an inclined block is fixedly connected on the lower side of the feeding cover towards the cavity.

[0016] Compared with the prior art, the present application has the beneficial effect that when in use, the material is injected into the cavity, enters the guide cavity through the connecting pipe and the feeding port, and the guide motor drives the guide shaft to extrude and transport the material, and when in use, the material enters the guide cavity through the connecting pipe and can enter more uniformly and be relatively loose under the action of the anti-blocking block, so that the material can be prevented from blocking the communication position due to the relatively solid material during transportation, and the material is more easily vented after entering the guide cavity, and the air in the internal gap of the agglomerated material is difficult to discharge after extrusion. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the present application.

[0018] Figure 2 It is a side view of the present application.

[0019] Figure 3 It is a top view of the present application.

[0020] Figure 4 It is a structural schematic view of the feeding cavity in the present application.

[0021] Figure 5 It is a structural schematic view of the ring sleeve in the present application.

[0022] Figure 6 It is a structural schematic view of the connecting pipe in the present application.

[0023] Figure 7 It is a structural schematic view of the anti-blocking block in the present application.

[0024] Figure 8 It is a sectional view of the anti-blocking block in the present application.

[0025] Figure 9 It is a structural schematic view of the material scraping assembly in the present application.

[0026] Figure 10 It is a structural schematic view of the material injection cover in the present application.

[0027] In the figure: 1-arrangement frame, 2-conveying motor, 21-first motor, 22-second motor, 3-conveying cavity, 31-back blowing port, 32-degassing port, 33-feeding port, 4-conveying shaft, 41-first auger, 42-second auger, 5-discharging cavity, 6-feeding cavity, 61-cavity, 62-third auger, 63-third motor, 64-feeding port cover, 6501-cover plate, 6502-inclined block, 6503-side stop, 66-connection pipe, 6601-wavy groove, 67-ring, 6701-guiding groove, 6702-threaded hole, 68-anti-blocking block, 6801-fan-shaped block, 6802-first sliding protrusion, 6803-second sliding protrusion, 6804-cavity, 6805-sliding rod, 6806-counterweight, 6807-connection spring, 69-scraping assembly, 6901-fixed ring, 6902-sliding ring, 6903-scraping knife. DETAILED DESCRIPTION

[0028] Please refer to Figures 1-4 In the embodiment of the present application, a double-spiral degassing auger comprises an arrangement frame 1, a conveying cavity 3 is installed on the arrangement frame 1, a conveying shaft 4 for conveying materials is rotationally connected in the conveying cavity 3, a conveying motor 2 for driving the conveying shaft 4 to rotate is installed on one side of the arrangement frame 1, a discharging cavity 5 is communicated at one end of the conveying cavity 3 away from the conveying motor 2, a feeding port 33 is throughly arranged on the side of the conveying cavity 3 close to the conveying motor 2, a feeding cavity 6 is communicated on the feeding port 33, a back blowing port 31 and a degassing port 32 for exhausting are arranged between the feeding port 33 and the discharging cavity 5, the conveying shaft 4 comprises a first auger 41 and a second auger 42 arranged in parallel, the feeding cavity 6 comprises a cavity 61, a connection pipe 66 is communicated between the bottom of the cavity 61 and the feeding port 33, and an anti-blocking block 68 is arranged in the connection pipe 66 to prevent blocking.

[0029] In use, the material is injected into the cavity 61, enters the guide cavity 3 through the connecting pipe 66 and the feed port 33, and is extruded and transported by the guide motor 2 and the guide shaft 4. Between the feed port 33 and the discharge cavity 5, the back blowing port 31 and the degassing port 32 are used for exhaust. Preferably, the degassing port 32 is connected to a negative pressure pump, and the back blowing port 31 is matched with air inlet. By vacuumizing to reduce the ambient pressure, the gas is promoted to escape. When the first auger 41 and the second auger 42 rotate, the spiral blades push the material from one end of the feed port 33 to the other end of the discharge cavity 5. According to the design, the first auger 41 and the second auger 42 can rotate in the same direction or in the opposite direction. The first auger 41 and the second auger 42 rotating in the opposite direction will generate strong shearing force and extrusion effect, which will destroy the bubble structure inside the material and promote the release of gas. The first auger 41 and the second auger 42 rotating in the same direction will increase the tumbling frequency of the material, expand the surface area, and accelerate the escape of gas. On the basis of the double-spiral degassing auger, if the first auger 41 and the second auger 42 are different in size, a large and small auger combination (i.e. asymmetric double-spiral design) is adopted, which can further optimize the mixing, shearing and degassing effect of the material through differential design. The diameter of the first auger 41 is usually 1.5-2 times that of the second auger 42, and the speed ratio is 1:2-1:3. The combination of large and small augers can more flexibly cope with the degassing needs of complex materials through differential mechanical action and vacuum environment classification control, especially when dealing with high-viscosity, multi-phase mixed or containing sensitive ingredients materials. In use, the material enters the guide cavity 3 through the connecting pipe 66, and can enter more uniformly under the action of the anti-blocking block 68, and is relatively loose. Therefore, the material is more easily degassed after entering the guide cavity 3, and the air in the internal gap of the agglomerated material after extrusion is difficult to discharge.

[0030] The guide motor 2 includes a first motor 21 and a second motor 22, which are connected through belt transmission or chain transmission between the first auger 41 and the second auger 42, so as to facilitate the realization of double-auger conveying.

[0031] As Figure 4As shown, the cavity 61 is rotatably connected with a third auger 62, one end of the third auger 62 is rotatably connected with a third motor 63, the anti-blocking block 68 is slidably connected inside the connecting pipe 66, a ring sleeve 67 is fixedly sleeved on the outer periphery of the end of the third auger 62 away from the third motor 63, the anti-blocking block 68 and the ring sleeve 67 are slidably matched, a scraping assembly 69 is movably arranged on the anti-blocking block 68, a feeding opening 64 is throughly arranged on one side of the upper part of the cavity 61, and a feeding cover 65 is assembled and connected in the feeding opening 64. In use, after the feeding cover 65 is opened, the material can be continuously fed into the cavity 61 through the feeding opening 64, and after the third motor 63 is started, the third auger 62 can be driven to convey the material into the guide conveying cavity 3, the anti-blocking block 68 can be driven to rotate by the rotation of the third auger 62, synchronous rotation and vertical shaking can be realized, so that the material can be uniformly input, and the material can be loosened during shaking to avoid clumping and direct extrusion to affect exhaust, and during the rotation of the anti-blocking block 68, the scraping assembly 69 can clean the surface of the anti-blocking block 68 to avoid material accumulation and adhesion.

[0032] As shown in the figure, Figures 5-6 The ring sleeve 67 is throughly provided with a plurality of threaded holes 6702 on the outer periphery, the ring sleeve 67 can be installed on the outer periphery of the end of the third auger 62 by passing the threaded holes 6702 with bolts, guide grooves 6701 are symmetrically embedded on both sides of the ring sleeve 67, one end of the anti-blocking block 68 is slidably matched with the guide grooves 6701, and wave grooves 6601 are embedded on the inner wall of the connecting pipe 66, the other end of the anti-blocking block 68 is slidably matched with the wave grooves 6601. The third auger 62 drives the ring sleeve 67 to rotate, the anti-blocking block 68 can be driven to rotate synchronously, the horizontal cross section of the anti-blocking block 68 is preferably semicircular, which occupies half of the opening of the connecting pipe 66, so that the communication position between the cavity 61 and the guide conveying cavity 3 can be continuously adjusted during the rotation of the anti-blocking block 68, thereby avoiding local extrusion to cause blockage, improving the effect of continuous feeding by dispersing and uniform feeding, and at the same time, the anti-blocking block 68 can be shaken in the vertical direction during rotation along the track of the wave grooves 6601 and the track of the guide grooves 6701, thereby avoiding material adhesion and improving the passing efficiency of the loosened material.

[0033] Further, as shown in the figure, Figure 7As shown, the anti-blocking block 68 comprises a fan-shaped block 6801 which is a semicircular structure, the edge of the fan-shaped block 6801 is in sliding fit with the inner wall of the connecting pipe 66, the middle part of the fan-shaped block 6801 is in sliding fit on the periphery of the ring sleeve 67, and the fan-shaped block 6801 is symmetrically provided with a first sliding protrusion 6802 which is in sliding fit with the guide groove 6701 on both sides of the ring sleeve 67, and the fan-shaped block 6801 is connected to one side of the connecting pipe 66 and is provided with a second sliding protrusion 6803 which is in sliding fit with the wave groove 6601. In specific use, when the ring sleeve 67 is rotated by the third auger 62, the cooperation of the first sliding protrusion 6802 and the guide groove 6701 can make the fan-shaped block 6801 rotate synchronously in the axial rotation, and when the fan-shaped block 6801 rotates, the second sliding protrusion 6803 slides along the track in the wave groove 6601, thereby vertically shaking, which can avoid the attachment and accumulation of materials and fluff the materials to improve the subsequent conveying and exhausting efficiency.

[0034] Further, as shown in Figure 8 The fan-shaped block 6801 is embedded with a cavity 6804, the cavity 6804 is symmetrically hinged with a slide rod 6805 on the upper and lower sides, the periphery of the slide rod 6805 is slidingly connected with a counterweight 6806, the end of the slide rod 6805 away from the inner wall of the cavity 6804 is provided with a flange to prevent the counterweight 6806 from being separated from the slide rod 6805, and the two slide rods 6805 opposite in the vertical direction are connected by a connecting spring 6807. When the third motor 63 is not started, the opposite slide rods 6805 can be kept vertical by the connecting spring 6807, and after the third auger 62 is driven to rotate by the third motor 63, the slide rods 6805 rotate relatively under the action of centrifugal force, the connecting spring 6807 is stretched, and at the same time, when the fan-shaped block 6801 vertically shakes, the counterweight 6806 slides on the slide rod 6805, thereby improving the shaking effect and the cleaning efficiency of the attached and accumulated materials.

[0035] Further, as shown in Figure 9 The scraping assembly 69 comprises a sliding ring 6902 slidingly connected on the periphery of the ring sleeve 67 and a fixed ring 6901 slidingly connected on the inner wall of the cavity 61, the fixed ring 6901 is vertically slidingly connected on the inner wall of the cavity 61 through a guide rail, a plurality of scrapers 6903 are fixedly connected between the fixed ring 6901 and the sliding ring 6902. When the fan-shaped block 6801 vertically slides, the fixed ring 6901, the sliding ring 6902 and the scrapers 6903 move vertically, and in the process of relative rotation of the fan-shaped block 6801, the fixed ring 6901, the sliding ring 6902 and the scrapers 6903 which do not rotate can scrape the materials left on the surface of the fan-shaped block 6801, thereby avoiding the accumulation.

[0036] Further, in order to improve the efficiency of material injection, the injection cover 65 comprises a cover plate 6501 which is matched in size with the injection port 64, and symmetrical side blocks 6503 are arranged on both sides of the cover plate 6501, which can be plate material or flexible material. The injection cover 65 is fixedly connected with an inclined block 6502 at the lower part of the side facing the cavity 61, and after pulling the cover plate 6501 outwards, the material can be guided into the cavity 61 through the inclined block 6502.

Claims

1. A double-spiral degassing auger, comprising a mounting frame, a guide cavity mounted on the mounting frame, a guide shaft for guiding materials rotatably connected within the guide cavity, a guide motor for driving the guide shaft to rotate mounted on one side of the mounting frame, a discharge cavity connected to the end of the guide cavity away from the guide motor, and a feed inlet extending through the guide cavity near the guide motor, characterized in that... A feeding chamber is connected to the feeding port. The feeding chamber includes a cavity body. A connecting pipe is connected between the bottom of the cavity body and the feeding port. An anti-blocking block is provided inside the connecting pipe to prevent blockage. A back-blowing port and a degassing port for exhaust are provided between the feed inlet and the discharge chamber, and the guide shaft includes a first auger and a second auger arranged in parallel. The guiding motor includes a first motor and a second motor, and the first motor and the second motor are linked together between the first auger and the second auger, respectively. A third auger is rotatably connected to the cavity, and a third motor is rotatably connected to one end of the third auger. The anti-blocking block is slidably connected to the inside of the connecting pipe. A ring is fixedly sleeved around the end of the third auger away from the third motor. The anti-blocking block and the ring are slidably adapted to each other. A scraping component is movably fitted above the anti-blocking block. A material injection port is provided through the upper part of one side of the cavity, and a material injection cap is assembled and connected in the material injection port. The outer periphery of the ring sleeve is provided with multiple threaded holes, and guide grooves are symmetrically embedded on both sides of the ring sleeve. One end of the anti-blocking block is slidably adapted to the guide groove. A wave groove is embedded in the inner wall of the connecting pipe, and the other end of the anti-blocking block is slidably adapted to the wave groove. The anti-blocking block includes a fan-shaped block, the edge of which slides against the inner wall of the connecting pipe, the middle of which is slidably sleeved around the outer edge of the ring sleeve, and the fan-shaped block is symmetrically provided with first sliding protrusions on both sides of the ring sleeve that are slidably adapted to the guide groove. The side of the fan-shaped block that is attached to the connecting pipe is provided with a second sliding protrusion that is slidably adapted to the wave groove. A cavity is embedded in the sector-shaped block, and sliding rods are symmetrically hinged on the upper and lower sides of the cavity. A counterweight is slidably fitted around the sliding rods. A flange is provided at the end of the slide rod away from the inner wall of the cavity to prevent the counterweight from falling off the slide rod. Two slide rods that are opposite each other in the vertical direction are connected by a connecting spring. The degassing port is connected to a negative pressure pump, and the backflush port is connected to the air intake. By drawing a vacuum, the ambient pressure is reduced, which promotes the escape of gas. The diameter of the first auger is 1.5-2 times that of the second auger, and the speed ratio is 1:2-1:

3. The combination of the large and small augers can flexibly meet the degassing requirements of complex materials through differentiated mechanical action and graded control of the vacuum environment.

2. The double-helix degassing auger according to claim 1, characterized in that, The scraping assembly includes a sliding ring that is slidably sleeved around the outer edge of the ring sleeve and a fixed ring that is slidably connected to the inner wall of the cavity. The fixed ring is vertically slidably connected to the inner wall of the cavity via a guide rail. Multiple scrapers are fixedly connected between the fixed ring and the sliding ring.

3. The double-helix degassing auger according to claim 1, characterized in that, The filling cap includes a cover plate that matches the size of the filling port. Side baffles are symmetrically provided on both sides of the cover plate. An inclined block is fixedly connected to the lower part of the filling cap facing the cavity.

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