Scraper type dust removal device additionally arranged above pressurizing cover of internal mixer

Abstract

The invention relates to the technical field of internal mixers, in particular to a scraper type dust removal device additionally arranged above a pressurizing cover of an internal mixer, which comprises a scraping and sucking mechanism arranged at the bottom of a shell and used for scraping and collecting dust on the top side wall of a pressing hammer body; the dust removing mechanism is linked with the hammer pressing body to move so as to clean the scraping and sucking mechanism; wherein each scraping and sucking mechanism comprises a wall scraping part set, each wall scraping part set comprises a plate hinged to the bottom of the machine shell, a scraping head installed at the tail end of the plate and wing plates fixed to the two sides of the plate, and the scraping heads of the two symmetrically-arranged scraping and sucking mechanisms are tightly attached to the side top wall of the pressing hammer body through tension springs between the wing plates. The scraping and sucking mechanism and the dust removing mechanism are in linkage with the lifting motion of the pressing hammer body, scraping and collecting of dust on the top side wall of the pressing hammer body and self-cleaning of the filtering part can be completed without manual intervention, the tedious step of manually disassembling the machine shell for cleaning is omitted, the cleaning efficiency is greatly improved, and meanwhile the labor cost input is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of internal mixer, in particular to a scraper type dust removal device installed above the pressurizing cover of an internal mixer. BACKGROUND

[0002] An internal mixer is a key equipment for mixing and processing high molecular materials such as rubber and plastic, and its core function is to uniformly mix raw rubber and compounding agents (such as carbon black, sulfur, accelerant, etc.) through the strong mechanical action between the rotor and the mixing chamber, so as to produce a mixed rubber that meets the process requirements, thereby laying a foundation for subsequent processes such as calendering, extruding, and molding.

[0003] A press hammer, also known as a pressurizing cover, is installed on the mixing chamber, and the press hammer applies pressure through a hydraulic or pneumatic system to ensure that the material is always in a compact state during the mixing process, thereby enhancing the mixing effect. However, in actual production, the surface of the press hammer is exposed to the mixing environment for a long time, and powdery compounding agents (such as carbon black and calcium carbonate) are easily splashed to the top side wall of the press hammer. The press hammer has a certain adsorption property and is easy to adsorb water vapor, mix with residual materials to form sticky substances, and accumulate layer by layer, even seep into the gaps or threaded holes on the surface of the press hammer. Therefore, manual cleaning is required, but the press hammer is located in the machine shell and is blocked, and manual cleaning operation requires disassembly of the machine shell, which is low in cleaning efficiency and high in labor cost. SUMMARY

[0004] In order to overcome the above technical problems, the purpose of the present application is to provide a scraper type dust removal device installed above the pressurizing cover of an internal mixer to solve the problem of manual cleaning of sticky substances accumulated on the surface of the press hammer, and the need to disassemble the machine shell during cleaning, low cleaning efficiency, and high labor cost.

[0005] To achieve the above purpose, the present application provides the following technical solutions: A kind of dust removal device is equipped with on the upper part of internal mixer pressing cover, including shell, hydraulic machine installed on shell, the working end of the hydraulic machine is connected with hammer body, wherein, further including: scraping and sucking mechanism, is located in the bottom of shell, is used to scrape and collect the dust of the top side wall of hammer body;Dust removal mechanism, linkage hammer body movement to clean scraping and sucking mechanism;Wherein, the scraping and sucking mechanism includes: wall scraping component group, including hinged plate in the bottom of shell, scraper head installed in the end of plate, wing plate fixed on both sides of plate, two groups of symmetrically arranged scraping and sucking mechanism make scraper head adhere to the side top wall of hammer body by tension spring between wing plate;Wall suction component group, including end dust suction box with air inlet slot and the rear dust suction box communicated therewith, the bottom of rear dust suction box is equipped with upper air nozzle;Filtering bin component group, including lower air nozzle one communicated with upper air nozzle, gas pipe one connected with lower air nozzle one, bin box communicated by gas pipe one, filter plate equipped in bin box, gas pipe two communicated with the top of bin box, lower air nozzle two connected with gas pipe two, and gas pipe three communicated with two lower air nozzle two;Vacuum pump machine, connected with gas pipe three to drive air flow;The dust removal mechanism includes: storage box, is installed in the bottom of bin box by sliding slot;Inner scraping plate ring, is slidably arranged in bin box and contacts filter plate on both sides, and the top is connected with bin box by tension spring;Push rod, one end is connected with inner scraping plate ring, and the other end extends to contact shell;When the hammer body rises, the dust scraping of scraper head, vacuum pump machine dust suction and inner scraping plate ring dust cleaning action are triggered synchronously.

[0006] Preferably, in the wall scraping component group, the scraper head is detachably installed on the plate by bolts, and the wing plates of the two groups of scraping and sucking mechanisms are elastically closed by tension springs.

[0007] Preferably, in the wall suction component group, the end dust suction box and the rear dust suction box are communicated by a plug-in interface.

[0008] Preferably, the end dust suction box is detachably fixed on the plate by bolts.

[0009] Preferably, in the filtering bin component group, two filter plates are symmetrically arranged in the bin box, the gas pipe one inputs dust-containing air flow to the center of the bin box, and the air flow is divided by the two filter plates and then guided out by the symmetrically arranged gas pipe two.

[0010] Preferably, the gas pipe one, the gas pipe two and the gas pipe three are hard pipes.

[0011] Preferably, the gas pipe three is slidably connected with the shell by a sliding slot and connected with the vacuum pump machine by a hose.

[0012] Preferably, in the dust removal mechanism, when the push rod contacts the shell as the hammer body rises, the inner scraping plate ring is driven to move downward to scrape the dust on the surface of the filter plate, and the dust falls into the storage box;When the hammer body descends, the inner scraping plate ring is reset by the tension spring.

[0013] Preferably, the storage box can be pulled out and detached from the bottom of the bin box along the sliding slot.

[0014] Preferably, the push rod is provided with a rubber pad at one end away from the inner scraper ring to contact the casing, and the push rod is in sliding fit with the press hammer body through the sliding groove.

[0015] Compared with the prior art, the present application has the following advantages: The lifting movement of the press hammer body is linked with the scraping and sucking mechanism and the dust removal mechanism, so that the scraping, collecting and self-cleaning of the filter components of the dust on the top side wall of the press hammer body can be completed without manual intervention, the cumbersome steps of manually disassembling the casing for cleaning are eliminated, the cleaning efficiency is greatly improved, and the labor cost is reduced; The dust is continuously scraped off by the scraper head adhering to the surface of the press hammer body, so that the accumulation of viscous substances into gaps or threaded holes is avoided, the problems of reduced sealing performance and increased running resistance of the press hammer body caused by impurities are reduced, the equipment wear probability is reduced, and the service life of the key components of the internal mixer is prolonged; The wall suction components cooperate with the vacuum pump to form a negative pressure dust suction system, which can timely suck away the dust scraped by the scraper head to avoid secondary scattering; the filter bin components intercept the dust through the filter plate, and cooperate with the dust removal mechanism to collect the dust into the storage box, which is convenient for centralized recovery and treatment, reduces the waste of powdery additives, reduces the workshop dust pollution, and improves the working environment; The scraper head, end dust box and other components are designed to be detachable, which is convenient for replacement after wear; the elasticity of the tension spring makes the scraper head always adhere to the press hammer body, which adapts to the position change during the lifting of the press hammer body; the storage box can be pulled out and detached, which is convenient for dust cleaning, and the overall structure takes into account the stability of operation and the convenience of later maintenance; The dust scraping, sucking and cleaning actions are triggered synchronously during the lifting of the press hammer body, which does not require additional power control and seamlessly connects with the original working process of the internal mixer, does not affect the normal production rhythm, ensures the production continuity while ensuring the cleaning effect. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present application; Figure 2 is a schematic diagram of the structure of the scraping and sucking mechanism and the dust removal mechanism of the present application; Figure 3 is a schematic diagram of the cross-sectional structure of the scraping and sucking mechanism and the dust removal mechanism of the present application; Figure 4 is a schematic diagram of the structure of the bottom part of the scraping and sucking mechanism and the dust removal mechanism of the present application; Figure 5 is a schematic diagram of the structure of the scraping and sucking mechanism of the present application; Figure 6 is a schematic diagram of the cross-sectional structure of the scraping and sucking mechanism of the present application; Figure 7 is a schematic diagram of the structure of the filter bin component group and the press hammer body of the present application; Figure 8 Structure diagram of filter bin component group and dust removal mechanism part of the present application; Figure 9 Structure diagram of filter bin component group and dust removal mechanism part of the present application; Figure 10 Structure diagram of filter bin component group and dust removal mechanism part of the present application; Figure 11 Structure diagram of filter bin component group and dust removal mechanism part of the present application; Figure 12 Structure diagram of filter bin component group and dust removal mechanism part of the present application;

[0017] In the figure: 11, the shell; 12, the hammer body; 13, the hydraulic machine; 2, the scraping mechanism; 21, the wall scraping component group; 211, the plate; 212, the scraping head; 213, the wing plate; 22, the wall suction component group; 221, the end dust box; 222, the rear dust box; 223, the upper air nozzle; 23, the filter bin component group; 231, the lower air nozzle one; 2311, the gas pipe one; 232, the bin box; 233, the filter plate; 234, the lower air nozzle two; 2341, the gas pipe two; 2342, the gas pipe three; 235, the vacuum pump machine; 3, the dust removal mechanism; 31, the storage box; 32, the inner scraping ring; 33, the push rod. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0019] An embodiment provided by the present application: A scraping type dust removal device is added above a banbury press cover, comprising a shell 11, a hydraulic machine 13 is installed on the shell 11, the hydraulic machine 13 is connected with a hammer body 12 through a working end, wherein, further comprising: A scraping mechanism 2 is arranged at the bottom of the shell 11, the scraping mechanism 2 is used for scraping dust on the top side wall of the hammer body 12 and collecting, the scraping mechanism 2 comprises a wall scraping component group 21 and a wall suction component group 22; The wall scraping component group 21 comprises a plate 211, one end of the plate 211 is hinged to the bottom surface of the shell 11, the other end of the plate 211 is provided with a scraping head 212 through bolt installation, both sides of the plate 211 are fixedly connected with wing plates 213, the scraping and sucking mechanism 2 is provided with two groups, and the two groups of scraping and sucking mechanisms 2 are symmetrically distributed on both sides of the hammer body 12, the scraping head 212 is used for scraping contact with the side top wall of the hammer body 12, two wing plates 213 in the two groups of scraping and sucking mechanisms 2 are connected with a tension spring, and the tension spring is used for pulling the scraping and sucking mechanisms 2 on both sides of the hammer body 12 to be close to each other. The wall sucking component group 22 comprises an end dust suction box 221 and a rear dust suction box 222, the end dust suction box 221 and the rear dust suction box 222 both have cavities, the end dust suction box 221 is provided with an air inlet groove towards the position of the scraping head 212, the end dust suction box 221 is detachably installed on the plate 211 through bolts, the end dust suction box 221 and the rear dust suction box 222 are provided with a pluggable interface, the end dust suction box 221 and the rear dust suction box 222 are communicated through the interface, and the rear dust suction box 222 is fixedly connected to the plate 211.

[0020] The scraping and sucking mechanism 2 further comprises a filter bin component group 23, the filter bin component group 23 comprises a lower air outlet one 231 and a lower air outlet two 234, the lower air outlet two 234 is provided with two, the lower air outlet two 234 and the lower air outlet one 231 are installed on the hammer body 12 through grooves, one end of the lower air outlet one 231 is connected with the upper air outlet 223 through an air pipe, the other end of the lower air outlet one 231 is connected with a gas pipe one 2311, one end of the gas pipe one 2311 away from the lower air outlet one 231 is connected with a bin 232, the bin 232 is internally provided with a filter plate 233, both sides of the top of the bin 232 are provided with a gas pipe two 2341, the gas pipe two 2341 is connected between the lower air outlet two 234 and the bin 232, a gas pipe three 2342 is connected between the lower air outlet two 234 and a vacuum pump machine 235.

[0021] The vacuum pump machine 235 is started to generate suction force, external gas enters the rear dust suction box 222 through the air inlet groove of the end dust suction box 221 and the interface, and then enters the lower air outlet one 231 through the upper air outlet 223 and the air pipe. Figure 10 The gas flows into the bin 232 through the gas pipe one 2311, and then passes through the filter plate 233, dust and the like will be attached to the surface of the filter plate 233, and the gas flow passes through the filter plate 233 and then flows into the lower air outlet two 234 through the gas pipe two 2341 at the top, and then enters the vacuum pump machine 235 through the lower air outlet two 234 and the gas pipe three 2342 and is discharged.

[0022] There are two sets of the box 232 / gas pipe 2341, the lower gas nozzle 234 and the gas pipe 3 2342, and the two sets of the box 232 / gas pipe 2341, the lower gas nozzle 234 and the gas pipe 3 2342 are symmetrically distributed on both sides of the gas pipe 1 2311. The flow direction of the gas in the box 232 is as follows: Figure 10 As shown, the air flows from the middle toward both sides, and the filter plates 233 on both sides of the bin box 232 filter the airflow, and the filtered dust adheres to the filter plates 233 .

[0023] It should be noted that gas tube three 2342, gas tube two 2341 and gas tube one 2311 are all air tubes made of hard plastic material, among which the end of gas tube three 2342 away from lower air nozzle two 234 is connected to the working end of the vacuum pump 235 through a soft air tube, and gas tube three 2342 is in sliding contact with the casing 11 through a slide groove.

[0024] The dust removing mechanism 3 is used to scrape off the dust attached to the filter plate 233 under the movement of the pressure hammer body 12. The dust removing mechanism 3 includes a storage box 31, and the storage box 31 is mounted on the bottom of the filter plate 233 through a slide groove. The storage box 31 is provided with an inner scraper ring 32, and the inner scraper ring 32 is slidably mounted in the magazine box 232. The inner scraper ring 32 can only slide up and down in the magazine box 232. A tension spring is provided between the top of the inner scraper ring 32 and the magazine box 232, and scrapers are provided on both sides of the inner scraper ring 32. The scrapers are in contact with the surface of the filter plate 233 for scraping off the attached dust. The top of the inner scraper ring 32 is connected to a push rod 33, and the push rod 33 is in sliding contact with the magazine box 232 and the pressure hammer body 12 through the slide groove. The end of the push rod 33 away from the filter plate 233 is provided with a rubber pad, and is used to contact the casing 11 through the rubber pad.

[0025] When the integral internal mixer is working, the hydraulic press 13 drives the hammer body 12 to move downward, so that the hammer body 12 is pressed down into the mixing chamber to squeeze the mixture to make it evenly mixed. At this time, the relative position of the hammer body 12 and the housing 11 is as follows: Figure 12 As shown in the left side view, when the internal mixer finishes working, the hammer body 12 will be driven up by the hydraulic press 13 to take out the mixture. At this time, the overall structural state will change from Figure 12 The left view changes to the right view. When the hammer body 12 rises, the hammer body 12 expands the scraping and suction mechanisms 2 on both sides through the top side walls. Under the action of the tension spring, the scraper head 212 will continue to scrape the side wall surface of the hammer body 12. At the same time as the hammer body 12 rises, the vacuum pump 235 starts to generate suction, and the air inlet groove of the end dust box 221 scrapes the position of the scraper head 212 to absorb dust. The inhaled dust will enter the bin box 232 and be blocked and filtered by the filter plate 233, and the external gas will be discharged again.

[0026] When the press ram 12 is rising, one end of the push rod 33 will contact the machine shell 11, and with the continued rising of the press ram 12, the push rod 33 will be pushed into a part of the press ram 12, and the end of the push rod 33 away from the machine shell 11 is connected to the inner scraping ring 32 in the cartridge box 232, so that the inner scraping ring 32 moves from top to bottom in the cartridge box 232, and when the inner scraping ring 32 moves downward, it scrapes the dust attached to the filter plate 233 on both sides, and the scraped dust is stored in the storage box 31 below. After long-term and multiple use, the storage box 31 can be pulled out from the bottom of the cartridge box 232, so as to facilitate the dumping of the dust in the storage box 31.

[0027] Working principle: When the mixer completes the mixing operation, the hydraulic machine 13 drives the press ram 12 to rise, the press ram 12 expands the two sides of the scraping and sucking mechanism 2, the tension spring pulls the wing plate 213 to make the scraping head 212 continuously adhere to the top side wall of the press ram 12 for scraping. At the same time, the vacuum pump machine 235 is started to generate negative pressure suction force, and the dust scraped by the scraping head 212 is sucked into the air inlet groove of the end dust suction box 221, and then enters the cavity of the rear dust suction box 222 through the interface. The dust-containing gas flow is guided into the lower air nozzle one 231 through the upper air nozzle 223 and the air pipe one 2311, and then is transported to the central cavity of the cartridge box 232 through the air pipe two 2341. The gas flow is divided from the center to both sides in the cartridge box 232 and penetrates through the filter plate 233, and the dust is intercepted and attached to the surface of the filter plate 233, and the purified gas is guided into the lower air nozzle two 234 through the air pipe three 2342 and discharged by the vacuum pump machine 235.

[0028] During the rising of the press ram 12, the top end of the push rod 33 contacts the fixed machine shell 11, and is pushed in the opposite direction with the continued rising of the press ram 12, to drive the inner scraping ring 32 to move downward in the cartridge box 232 against the resistance of the tension spring. The inner scraping ring 32 synchronously scrapes the surface of the filter plate 233 on both sides, and peels off the attached dust, and the scraped dust directly falls into the storage box 31 for temporary storage. When the press ram 12 descends for mixing operation, the inner scraping ring 32 is reset to the top of the cartridge box 232 under the action of the tension spring. After multiple working cycles, the operator can manually pull out the storage box 31 along the sliding groove to clean the accumulated dust, and disassemble the end dust suction box 221 through the bolt to perform internal maintenance. The device synchronously realizes the functions of dust scraping, negative pressure dust suction, filtering and self-cleaning through the lifting movement of the press ram 12, and the whole process does not need additional power control.

[0029] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics of the present application. The embodiments should therefore be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the above description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered as limiting the scope of the claims with respect to the figures of the patent document.

Claims

1. A scraper-type dust removal device is installed above the pressure cover of an internal mixer, comprising a housing and a hydraulic press installed on the housing, wherein the working end of the hydraulic press is connected to a pressure hammer body, characterized in that: Also includes: The scraping and suction mechanism is located at the bottom of the casing and is used to scrape and collect dust on the top and side walls of the hammer body; Dust removal mechanism, linked to the hammer movement to clean the scraping and suction mechanism; Wherein, the scraping and suction mechanism includes: a wall scraping component group, including a plate hinged to the bottom of the casing, a scraping head installed at the end of the plate, and wing plates fixed on both sides of the plate, and two groups of symmetrically arranged scraping and suction mechanisms make the scraping heads close to the top wall of the pressure hammer body through the tension springs between the wing plates; a wall suction component group, including an end dust suction box with an air inlet groove and a rear dust suction box connected thereto, and an upper air nozzle is provided at the bottom of the rear dust suction box; a filter bin component group, including a lower air nozzle 1 connected to the upper air nozzle, a gas pipe 1 connected to the lower air nozzle 1, a bin box connected through the gas pipe 1, a filter plate arranged in the bin box, a gas pipe 2 connected to the top of the bin box, a lower air nozzle 2 connected to the gas pipe 2, and a gas pipe 3 connecting the two lower air nozzles 2; a vacuum pump connected to the gas pipe 3 to drive the airflow; The dust removal mechanism includes: a storage box, which is installed at the bottom of the storage box through a slide groove; an inner scraper ring, which is slidably arranged in the storage box and contacts the filter plate on both sides, and is connected to the storage box at the top through a tension spring; a push rod, one end of which is connected to the inner scraper ring and the other end extends to contact the housing; When the pressure hammer body rises, the scraper head scrapes dust, the vacuum pump sucks dust and the inner scraper ring cleans dust.

2. A scraper-type dust removal device is installed above the pressure cover of the internal mixer according to claim 1, characterized in that: In the wall scraping component group, the scraping head is detachably mounted on the plate by bolts, and the wing plates of the two groups of scraping and suction mechanisms are elastically closed by tension springs.

3. A scraper-type dust removal device is installed above the pressure cover of the internal mixer according to claim 1, characterized in that: In the wall suction component group, the end dust suction box and the rear dust suction box are connected through a pluggable interface.

4. A scraper-type dust removal device is installed above the pressure cover of the internal mixer according to claim 1, characterized in that: The end dust collection box is detachably fixed to the plate by bolts.

5. A scraper-type dust removal device is installed above the pressure cover of the internal mixer according to claim 1, characterized in that: In the filter bin component group, two filter plates are symmetrically arranged in the bin box, and the dust-laden airflow is input into the center of the bin box by the first gas pipe. The airflow is divided by the two filter plates and then discharged by the second symmetrically arranged gas pipe.

6. A scraper-type dust removal device is installed above the pressure cover of the internal mixer according to claim 5, characterized in that: The gas pipe 1, gas pipe 2 and gas pipe 3 are hard pipes.

7. A scraper-type dust removal device is installed above the pressure cover of the internal mixer according to claim 5, characterized in that: The gas pipe 3 is slidably matched with the casing through a slide groove and is connected to the vacuum pump through a hose.

8. The internal mixer according to claim 1, wherein a scraper-type dust removal device is installed above the pressure cover, characterized in that: In the dust removal mechanism, when the push rod rises with the pressure hammer body and contacts the casing, it drives the inner scraper ring to move downward to scrape the dust on the surface of the filter plate, and the dust falls into the storage box; when the pressure hammer body descends, the inner scraper ring is reset by the tension spring.

9. The internal mixer according to claim 1, wherein a scraper-type dust removal device is installed above the pressure cover, characterized in that: The storage box can be pulled out and removed from the bottom of the storage box along the sliding groove.

10. A scraper-type dust removal device is installed above the pressure cover of an internal mixer according to claim 1, characterized in that: A rubber pad contacting the casing is provided at one end of the push rod away from the inner scraper ring, and the push rod is slidably matched with the pressure hammer body through a sliding groove.

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