CN218693600U - Resin sand thermal method regeneration bulb tube cylinder - Google Patents

Abstract

The utility model discloses a resin sand thermal method regeneration bulb cylinder, bellmouth baffle and socket baffle are fixed respectively by fastener I and fastener II according to in bulb bellmouth and socket, and fastener I is fixed with the cooperation of the intraoral sealing flange that holds, and the through-hole cooperation of processing on fastener II and the socket. The bellmouth baffle and the spigot baffle are plugged by refractory filler to prevent resin sand grains in the bulb tube from leaking. The outer circle of a baffle of the bell and spigot baffle is designed to be a sealed outer circle, a packing ring groove is arranged on the sealed outer circle, the installation pipe section is fixed on the baffle and extends outwards, installation holes are uniformly distributed in the installation pipe section, and the baffle is fixed by fasteners through the installation holes. Or mounting pipe sections are uniformly distributed with mounting grooves, the mounting grooves correspond to the through grooves of the loose pieces in the local bellmouths and are matched with the inclined iron for fixed connection. The utility model discloses utilize the bell and spigot structure of bulb, carry out the thermal method regeneration in the clearance of bulb thermal treatment production, be applicable to the system core resin sand regeneration.

Description

Resin sand thermal method regeneration bulb tube cylinder

Technical Field

The utility model discloses be applied to the casting field, relate to resin sand thermal method regeneration, specifically utilize nodular cast iron pipe to carry out resin sand thermal method regeneration's device in continuous heat treatment stove.

Background

In the casting industry, resin sand molding becomes the mainstream of a production line, and the resin sand molding takes artificially synthesized resin as a binder of molding sand, and the resin is cured by irreversible cross-linking reaction under the action of a curing agent, so that a casting mold reaches the required strength, and the requirement of filling the metal liquid is met. After the resin sand is used, the resin film is adhered to the surface of the sand grains, and only after the resin sand is regenerated, the molding sand can be reused. At present, the resin sand regeneration mainly comprises two types of mechanical regeneration and thermal regeneration. The mechanical regeneration is to remove the residual resin film on the surface of sand grains by mechanically rubbing the old sand, and the method has insufficient resin sand regeneration and film removal, low efficiency and low bonding strength of the regenerated resin sand. The thermal regeneration is to heat the used sand to a high temperature to burn off and decompose the residual resin film on the surface of the used sand so as to achieve the purpose of removing the resin film. In general, the temperature of the thermal regeneration apparatus is generally set to 400 to 800 ℃. For this reason, the thermal method regeneration mostly adopts a special heating furnace, such as a boiling type resin sand thermal method regeneration furnace and a roasting furnace for regeneration treatment of casting resin sand are respectively given by publication numbers CN2550091Y and CN 2605941Y; publication No. CN109128015A discloses a thermal method regeneration fluidizing and roasting furnace for testing, which is used for verifying and testing the thermal method regeneration fluidizing effect and roasting effect of resin sand; publication No. CN113182490A discloses a resin sand continuous thermal regeneration roasting furnace and system, publication nos. CN201157882Y, CN203900375U, CN206936276U and CN212551592U respectively disclose a thermal method regenerated resin sand apparatus, an energy-saving roasting furnace for casting resin sand regeneration treatment colleges, a resin sand regeneration system and a depu resin sand regeneration device, all of which are used for resin sand thermal method regeneration.

However, the above-mentioned various equipments are all used for thermal regeneration of a large amount of resin sand, and are particularly suitable for resin sand regeneration in a production line. For metal mold casting, the resin sand core is adopted for auxiliary molding, the using amount of the resin sand is small, and equipment for special thermal method regeneration cannot continuously work, so that the problem of waste of thermal energy is solved. Publication No. CN113203284A discloses an aluminum alloy continuous melting furnace of utilizing waste heat regeneration resin sand, fixed cover is equipped with the sleeve pipe outside the vertical portion of discharge flue, and the top side of sleeve pipe has seted up into the sand mouth, and the discharge gate has been seted up to the sheathed tube bottom, and the regeneration sand passes through the discharge gate and discharges, and the extraction opening has been seted up at the top of sleeve pipe. The waste heat of the melting furnace is utilized to realize the thermal regeneration of the resin sand, additional heating equipment for the resin sand is not needed, the energy is saved, and the problem of regeneration of a small amount of resin sand is solved.

For ductile iron pipe production enterprises, a heat treatment furnace on a production line is always in a high-temperature working state, and the temperature of the heat treatment furnace is irrelevant to the production efficiency of a centrifugal machine and the forming of ductile iron pipes. The application utilizes the scrapped ductile iron pipe, and the high temperature of the heat treatment furnace is utilized to carry out resin sand thermal regeneration when the heat treatment gap of the ductile iron pipe or the yield is insufficient.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem be: the resin sand thermal regeneration device utilizing the waste ductile iron pipes adopts the scrapped ductile iron pipes to carry out resin sand thermal regeneration treatment in a ductile iron pipe heat treatment furnace.

The utility model adopts the technical proposal that: the resin sand hot method regeneration bulb tube roller comprises a bulb tube, a bellmouth baffle, a socket baffle, a fireproof filler, a fastening piece I and a fastening piece II. The socket baffle is fixed in the socket of the bulb tube by a fastener I, and the fastener I is matched and fixed with a sealing flange in the socket. The socket baffle is fixed in the bulb socket by a fastener II, and the fastener II is matched with a through hole processed on the socket. The bellmouth baffle and the spigot baffle are plugged by refractory filler to prevent resin sand grains in the bulb tube from leaking.

Furthermore, bellmouth baffle includes baffle I, sealed excircle I, packing ring groove I and installation pipeline section I. The excircle design of baffle I is sealed excircle I, is provided with filler annular I on this sealed excircle I, and fire-resistant filler fills in between sealed excircle I and the bellmouth free segment, and is spacing by filler annular I. Installation pipeline section I and I fixed connection of baffle or an organic whole structure, outwards stretch out, and the equipartition processing has mounting hole I on the installation pipeline section I, through this mounting hole I, I fixed connection bulb bellmouth of fastener and bellmouth baffle. The fastener I can be a bolt and a nut, and also can be a bolt rod and an oblique iron, and a long-strip-shaped through hole is processed in the middle of the bolt rod.

Further, for the installation of being convenient for, I equipartition processing of installation pipeline section has the mounting groove, and this mounting groove is corresponding with logical groove of loose piece in the local bellmouth, the mounting groove with lead to groove cooperation wedge fixed connection. And a groove corresponding to the socket sealing flange is designed on the loose piece.

Furthermore, the socket baffle comprises a baffle II, a sealing excircle II, a packing ring groove II and an installation pipe section II. The excircle design of baffle II is sealed excircle II, should be provided with filler annular II on the sealed excircle II, and fire-resistant filler is filled in between sealed excircle I and the socket internal surface, and is spacing by filler annular II. The mounting pipe section II is fixedly connected with the baffle II or is of an integral structure and extends outwards. And mounting holes II are uniformly formed in the mounting pipe section II and correspond to through holes formed in the insertion openings. The fastener II can be a bolt and a nut, and also can be a bolt rod and an oblique iron, and a long-strip-shaped through hole is processed in the middle of the bolt rod.

The utility model has the advantages that: the utility model discloses a scrap bulb, utilize the bell and spigot structure of bulb, with bellmouth baffle and socket baffle installation in the bulb, do not influence the operation and the structure of bulb heat treatment furnace, the inner space of make full use of bulb utilizes the clearance of bulb heat treatment production to carry out the heat method regeneration, does not influence the production of bulb, also does not waste the energy.

Drawings

FIG. 1 is a schematic front view of the structure of example 1;

FIG. 2 is a right side view of FIG. 1;

FIG. 3 is a schematic view of a bellmouth baffle of example 1;

FIG. 4 is a schematic view of a socket shield of embodiment 1;

FIG. 5 is an enlarged view of a portion of FIG. 1 at A;

FIG. 6 is an enlarged view of a portion of FIG. 1 at B;

FIG. 7 is a schematic front view of the structure of example 2;

FIG. 8 is a partial structural view of embodiment 3;

FIG. 9 isbase:Sub>A schematic cross-sectional view A-A of FIG. 8;

reference numerals: 1-bulb tube, 2-bellmouth baffle, 3-spigot baffle, 4-refractory filler, 5-fastener I, 6-fastener II, 7-resin sand, 8-wedge and 9-loose block;

11-spigot, 12-socket, 13-sealing flange;

21-baffle I, 22-reinforcing rib I, 23-sealing excircle I, 24-packing ring groove I, 25-mounting pipe section I, 26 mounting holes I, 27-center hole I and 28-mounting groove;

31-baffle II, 32-reinforcing ribs II, 33-sealing excircle II, 34-packing ring groove II, 35-mounting pipe sections II, 36-mounting holes II and 37-central hole II.

Detailed Description

The inner and outer portions are described below as being relatively closer to the center of the bulb than to the center of the bulb, and the outer portion is relatively farther from the center of the bulb. The following I and II are just used for distinguishing positions, the socket position of the bulb is I, and the socket position is II, so that the distinction of sequence and number is not carried out.

Example 1.

The structure of the bulb roller of the embodiment is shown in the attached figures 1-6. Comprises a bulb tube 1, a bellmouth baffle 2, a socket baffle 3, a refractory filler 4, a fastener I5 and a fastener II 6. The bulb 1 includes a socket 11 and a socket 12 at both ends, and normally, the socket 11 is inserted into the socket 12, and the connection and sealing are performed by a rubber ring by a sealing flange 13 on the inner surface of the socket, so as to prevent water leakage or air leakage.

At the socket end of the bulb tube, the socket baffle 2 is connected with the socket 12 through a fastener I5, the socket baffle 2 is fixedly installed in the socket 12 through the fastener I5, and then is blocked by a refractory filler 4 to prevent the resin sand 7 in the bulb tube from leaking. The structure of the bellmouth baffle 2 is shown in the attached figure 3 and comprises a baffle I21, a sealing excircle I23, a packing ring groove I24, an installation pipe section I25 and the like. Baffle I21 is used for the shutoff bellmouth, for preventing that bellmouth baffle 2 from warping, improves its thermal fatigue strength and bulk strength, is provided with the strengthening rib I22 of equipartition on baffle I21. The excircle design of baffle I21 is sealed excircle I23, is provided with packing ring groove I24 on sealed excircle I23. The inner surface of the joint of the bulb socket 12 and the bulb straight tube is a free section, when the bulb socket is connected, the free section can be used for adjusting the insertion depth of the spigot, and as the free section is an inward-expanding inclined plane, as shown in figure 5, the angle between the central lines of two connected bulbs can be adjusted, and even if the central lines of the two bulbs deviate by about 3 degrees, the socket connection can still keep sealed. The free section is matched with the sealing excircle I23, the refractory filler 4 is filled between the free section and the sealing excircle, and the refractory filler 4 is used for sealing resin sand grains in the ball tube to prevent the sand grains from leaking. The refractory filler 4 is restrained by the filler ring groove I24 and the inclined plane of the free section, and the installation pipe section I25 is fixedly connected with the baffle I21 or is of an integral structure in the embodiment. Installation pipeline section I25 outwards stretches out, stretches out outward to the bellmouth promptly, and the equipartition is processed on installation pipeline section I25 has mounting hole I26, and this mounting hole I26 cooperates with fastener I5, with bellmouth baffle 2 fixed mounting in the bellmouth 12 of bulb. This embodiment uses bolts and nuts, as shown in fig. 5, which pass through the mounting holes i 26 to contact the seal flange 13, and are fixed by nuts. Thus, the bolts are fixed by the nuts in the radial direction of the bulb and by the seal flange 13 in the axial direction, thereby fixing the socket shroud 2. A central hole I27 is formed in the center of the baffle I21, and the central hole I27 is used for adding resin sand blocks into the bulb tube 1, so that decomposed or burnt gas of the resin sand can conveniently overflow and be burnt at a high temperature in a heat treatment furnace.

At the socket end of the bulb, the socket baffle 3 is connected with the socket 11 through a fastener II 6, the socket baffle 3 is fixedly installed in the socket 11 through the fastener II 6, and then is blocked by the fireproof filler 4, so that the resin sand 7 in the bulb is prevented from leaking. The structure of the socket baffle 3 is basically consistent with that of the socket baffle 2, and comprises a baffle II 31, a sealing excircle II 33, a packing ring groove II 34, a mounting pipe section II 35 and the like, as shown in figure 4. Baffle II 31 is used for shutoff socket 11, for preventing that socket baffle 3 from warping, improves its thermal fatigue strength and bulk strength, is provided with the strengthening rib II 32 of equipartition on baffle II 31. The outer circle of the baffle II 31 is designed into a sealing outer circle II 33, and a packing ring groove II 34 is arranged on the sealing outer circle II 33. And the fireproof filler 4 is used for filling and sealing the installation gap between the excircle II 33 and the inner surface of the socket and is used for plugging resin sand and preventing sand from leaking. The refractory filler 4 is restrained by the filler ring groove I24 and cannot move freely, so that a good plugging effect is kept. The mounting pipe section II 35 and the baffle II 31 are fixedly connected or are of an integral structure, and the integral structure is adopted in the embodiment. The mounting pipe section II 35 extends out of the socket, mounting holes II 36 are uniformly formed in the mounting pipe section II 35, the mounting holes II 36 are matched with fasteners II 6, and the socket baffle 3 is fixedly mounted in the socket 11 of the bulb tube. On the socket 11 of bulb, with the corresponding position of mounting hole II 36, the equipartition processing has the through-hole with II 36 matched with of mounting hole, and this embodiment fastener II 6 is the same with fastener I5, for the bolt and nut structure, and the bolt passes this through-hole and II 36 of mounting hole, fastens with the nut. Since the through hole and the mounting hole II 36 limit the movement of the bolt in the axial direction of the bulb, and the nut limits the movement in the radial direction, the fixed connection of the socket baffle 3 in the socket is realized. A central hole II 37 is processed in the center of the baffle II 31, and the central hole II 37 is used for adding a resin sand block into the bulb tube 1, so that decomposed or combusted gas of the resin sand can conveniently overflow and can be combusted at a high temperature in a heat treatment furnace.

When this embodiment uses, bulb both ends are installed respectively, bellmouth baffle 2 and socket baffle 3, then add resin sand piece in the centre bore through the baffle to the bulb. Under the condition that the task of the bulb tube heat treatment furnace is not full, the bulb tube heat treatment furnace is lifted to a furnace inlet for heat treatment, rolls into the heat treatment furnace together with a finished bulb tube, and rolls into temperature intervals of a preheating section, a high-temperature section, a slow cooling section and the like of the heat treatment furnace in sequence. In the rolling process of the roller, the resin sand in the roller rolls in the bulb tube, the sand block and the sand grains are subjected to the high temperature transmitted by radiation or conduction of the roller, the resin and the curing agent residues on the surfaces of the sand grains are decomposed and combusted, the gas overflows from the gas outlet and is decomposed and combusted again in a high-temperature area, and the gas is discharged from a flue of the thermal treatment furnace without polluting the environment. After the ball tube rolls out through self-heating treatment, the baffles at the two ends are cooled and disassembled, and sand grains in the ball tube are cleaned.

Example 2.

The difference between this embodiment and embodiment 1 lies in the difference of the fastener, in embodiment 1, the fastener adopts the bolt and the nut, because in the high temperature heat treatment furnace, easily oxidize, can't reuse, even adopt stainless steel material, the life of the screw thread of bolt and nut is limited, also need change the fastener, causes the fastener cost to increase. In this embodiment, instead of using a threaded connection, a wedge is used, as shown in fig. 7, the fastening member is a bolt rod and a wedge, and a long-strip-shaped through hole matched with the wedge is processed in advance on the bolt rod. The mounting was carried out in a similar manner to example 1.

This embodiment should preferably use with the riding wheel group cooperation, should install socket baffle 2 and socket baffle 3 of tearing open on the riding wheel group. When the baffles at the two ends are installed, the ball tube rotates slowly, and the wedge is gradually knocked into the strip through hole of the bolt rod, so that the fit clearance between the baffle and the socket or the spigot can be eliminated gradually, and the baffle can be fixed sufficiently. When the baffle is disassembled, the bulb tube rotates slowly, the baffle is knocked to be favorable for uniform loosening of the baffle and the bell and spigot, and the baffle is convenient to disassemble. In addition, the ball tube rolled out from the heat treatment furnace is filled with sand grains and is cooled on the riding wheel set in a rotating way, so that the roundness of the ball tube is kept, and the ball tube can be used again. If not cooled on the roller set, deformation will occur, and the ovality will affect the rolling on the heat treatment furnace rail for the next use.

Example 3.

Although the embodiment 2 solves the problem of replacing the fasteners for multiple times, each fastener connection of the socket needs two inclined irons, the fastener connection of the socket of the embodiment only uses one inclined iron, and the structure of the fastener connection of the socket is shown in figure 3. The loose piece 9 is put into the socket of the bulb tube in advance, and a groove matched with the sealing flange 13 is processed on the loose piece 9. A local installation groove 28 is designed on the installation pipe section I25, and a through groove corresponding to the installation groove 28 is also designed on the movable block 9.

When the bell mouth baffle 2 is installed, the loose piece 9 is placed in a gap between the installation pipe section I25 and the bell mouth of the bulb tube, then the axial position of the loose piece 9 is adjusted to enable the through groove position of the loose piece to be consistent with the position of the installation groove 28, then the wedge 8 is inserted into the installation groove 28, and the wedge 8 is knocked in to fix the installation. When the disassembly is carried out, the bellmouth baffle can be disassembled by pulling out or knocking the movable wedge 8.

The utility model discloses an utilize the bell and spigot structure of bulb because of size, defect or performance scrap bulb, with bellmouth baffle and socket baffle installation in the bulb, do not influence the operation and the structure of bulb heat treatment furnace, make full use of bulb's inner space moreover, as much as possible regenerated resin sand. The utility model is suitable for a psammitolite resin sand's regeneration, it is not big to the resin sand quantity, and the system core of discontinuous use resin sand is very suitable for. The key point is that no energy is wasted, the gap produced by the heat treatment furnace bulb tube is utilized, and the production of the bulb tube is not influenced.

The embodiment 1 of the utility model has been tried out, and the structure has been improved to embodiment 2 at present. After the bellmouth baffle is used for a plurality of times and seriously deformed, the replacement is carried out according to the embodiment 3.

Claims (8)

1. The utility model provides a resin sand hot method regeneration bulb cylinder which characterized in that: comprises a bulb tube, a bellmouth baffle (2), a socket baffle (3), a refractory filler (4), a fastener I (5) and a fastener II (6); the bellmouth baffle (2) is fixed in the bellmouth of the bulb tube by a fastener I (5), and the fastener I (5) is matched and fixed with a sealing flange in the bellmouth; the socket baffle (3) is fixed in the bulb socket by a fastener II (6), and the fastener II (6) is matched with a through hole processed on the socket; the socket baffle (2) and the socket baffle (3) are plugged by refractory filler (4).

2. The resin sand hot-method regeneration bulb roller as claimed in claim 1, wherein: the bellmouth baffle (2) comprises a baffle I (21), a sealing excircle I (23), a packing ring groove I (24) and a mounting pipe section I (25); the excircle design of baffle I (21) is provided with packing annular I (24) for sealed excircle I (23), installation pipeline section I (25) and baffle I (21) fixed connection or a body structure outwards stretch out on this sealed excircle I (23).

3. The resin sand hot-method regeneration bulb roller as claimed in claim 2, characterized in that: the mounting pipe section I (25) is evenly provided with mounting holes I (26), and fasteners I (5) are fixedly connected with the socket of the ball pipe and the socket baffle (2) through the mounting holes I (26).

4. The resin sand hot recycling bulb drum as claimed in claim 3, wherein: the fastener I (5) is a bolt and a nut or a bolt rod and an oblique iron, and a long-strip-shaped through hole is processed in the middle of the bolt rod.

5. The resin sand hot-method regeneration bulb tube roller as claimed in claim 2, characterized in that: installation pipeline section I (25) equipartition processing has mounting groove (28), and this mounting groove (28) are corresponding with logical groove of local bell interior loose piece (9), mounting groove (28) and logical groove cooperation wedge (8) fixed connection.

6. The resin sand hot recycling bulb drum as claimed in claim 5, wherein: and a groove corresponding to the socket sealing flange is designed on the loose piece (9).

7. The resin sand hot-method regeneration bulb roller as claimed in claim 1, wherein: the socket baffle (3) comprises a baffle II (31), a sealing excircle II (33), a packing ring groove II (34) and an installation pipe section II (35); the excircle design of baffle II (31) is sealed excircle II (33), is provided with on this sealed excircle II (33) and packs annular II (34), installation pipeline section II (35) and baffle II (31) fixed connection or a body structure outwards stretch out, the equipartition processing has mounting hole II (36) on installation pipeline section II (35), and the through-hole cooperation of processing on this mounting hole II (36) and the socket.

8. The resin sand hot recycling bulb drum as claimed in claim 7, wherein: the fastener II (6) is a bolt and a nut or a bolt rod and an oblique iron, and a long-strip-shaped through hole is processed in the middle of the bolt rod.

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