CN218693629U - Device for promoting triethylamine to catalyze resin sand to harden - Google Patents

Abstract

The utility model discloses a device that promotes triethylamine catalysis resin sand to harden relates to nodular cast iron resin sand coremaking field. The utility model discloses a core box backplate, core box, base and the stick of loosing core, the support base is installed perpendicularly to the bottom of core box backplate, installs the base of loosing core on the support base, installs the core of loosing core on the base of loosing core, is equipped with the negative pressure trachea below the base of loosing core, and the core box is installed near one side of the base of loosing core to the core box backplate, is equipped with the resin psammitolite in the core box. According to the device for promoting triethylamine to catalyze the hardening of the resin sand, the problems that a core is not hardened locally and the hardening time is long are solved by changing the core-pulling base structure, the core-making period is shortened, the quality of the sand core is improved by changing the core box structure, the dosage of triethylamine is reduced by changing the pressure intensity of different areas of the core box, and the production cost is reduced.

Description

Device for promoting triethylamine to catalyze resin sand to harden

Technical Field

The utility model relates to a nodular cast iron resin sand coremaking technical field specifically is a device that promotes triethylamine catalysis resin sand sclerosis.

Background

The industry of ductile iron pipes in China starts in the early 90 s of the 20 th century, develops rapidly under the strong support of water supply coordination in China cities and towns, and after practical use for nearly 30 years, the safety and the practicability of the ductile iron pipes are generally accepted by the water supply industry, and the annual output in 2008 in China reaches 220 ten thousand tons, which is 11 times of that in 1990. As China is a country with water resource shortage, more than 600 water-deficient cities and more than 200 serious water-deficient cities, the water supply and saving industry is in the spotlight, and the nodular cast iron pipe has wide development prospect.

The nodular cast iron pipe fitting is an important component for connecting the nodular cast iron pipes. The nodular cast iron pipe fitting has the characteristics of iron and steel, excellent corrosion resistance, good extensibility, good sealing effect and simple installation, is mainly used for water supply, gas transmission, oil transmission and the like of municipal and industrial enterprises, and has high cost performance. The nodular cast iron tee pipe fitting accounts for about 25 percent of the nodular cast iron pipe fitting.

The triethylamine cold box core-making method has an important position and a large specific gravity in casting processes at home and abroad. Compared with the traditional casting technology, the triethylamine cold core box process has a plurality of advantages, such as higher resin sand strength, high hardening speed and efficiency, good surface smoothness and size precision of a casting, no need of heating the core box, good labor condition, less environmental pollution, relatively lower energy consumption and production cost and the like. During casting, the sand core is used for forming the inner cavity contour of a casting and is an important part for tidal sand molding, the sand core with good quality is an important link for ensuring the appearance quality of the casting, the quality of control in the core making process is very critical to casting production, the nodular cast iron large-caliber pipe fitting is a conventional product in the nodular cast iron pipe fitting, the sand core is large, during core making, the time for triethylamine to reach the bottom of a core box is long, sometimes the bottom sand core is not locally hardened, the addition of the triethylamine needs to be increased, and meanwhile, the purification time of the triethylamine needs to be prolonged, so that the production cost is increased, the core making efficiency is reduced, and aiming at the defects, a device for promoting the triethylamine to catalyze the hardening of resin sand is designed, and is necessary.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a promote device of triethylamine catalysis resin sand sclerosis, have and loose core the base structure through changing, promote the triethylamine fast flow to the sclerosis that the resin psammitolite was realized to core box bottom, solve the local unhardened of system core, the problem that the hardening time is long, through changing the core box structure, reduce core box bottom pressure, make the triethylamine arrive the bottom of psammitolite fast, the core quality has been improved, through the pressure size that changes the different regions of core box, promote the triethylamine fast flow to the place of psammitolite local hardening difficulty, promote the psammitolite fast hardening, reduce the triethylamine quantity simultaneously, save the triethylamine quantity, shorten system core cycle, reduction in production cost's effect, can solve the problem among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme: the device for promoting triethylamine to catalyze the hardening of the resin sand comprises a core box back plate, a core box, a core-pulling base and a core-pulling rod, wherein the bottom of the core box back plate is vertically provided with the supporting base, the core-pulling base is arranged on the supporting base, the core-pulling rod is arranged on the core-pulling base, a negative pressure air pipe is arranged below the core-pulling base, the core box is arranged on one side, close to the core-pulling base, of the core box back plate, and the resin sand core is arranged in the core box.

Preferably, the inner cavity of the core box and the core-pulling base are both provided with vent plugs, triethylamine reaches each region of the core box through the vent plugs, and the core box is communicated with the core-pulling base.

Preferably, the negative pressure trachea is installed on the tuber pipe and is communicated with the tuber pipe, and the tuber pipe setting is on the base of loosing core, all is equipped with the interface on negative pressure trachea and the tuber pipe, and the negative pressure trachea is connected with outside compressed air pipe.

Preferably, the top of the core box is provided with a sand shooting port, the sand shooting port is communicated with the core box, and both sides of the core box are provided with positioning length pin sleeves.

Preferably, one side of the core-pulling base is provided with a guide wear-resistant strip, and two sides of the core box back plate are provided with lifting rods.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. this promote device of triethylamine catalysis resin sand sclerosis through changing the base structure of loosing core, increases an tuber pipe on the base of loosing core to be connected with outside compressed air pipe through negative pressure trachea, open the compressed air switch when making the core, according to the place that wind speed flow is big, the principle that pressure is little promotes the triethylamine to flow to the sclerosis that the resin psammitolite is realized to the core box bottom fast, solves the local unhardened, the long problem of hardening time of making the core, has practiced thrift operating time.

2. According to the device for promoting triethylamine to catalyze the resin sand to harden, the pressure at the bottom of the core box is reduced by changing the structure of the core box, so that triethylamine can quickly reach the bottom of the sand core, and the quality of the sand core is improved.

3. According to the device for promoting triethylamine to catalyze the resin sand to harden, the triethylamine is promoted to quickly flow to a place where local hardening of the sand core is difficult by changing the pressure intensity of different areas of the core box, so that the quick hardening of the sand core is promoted, the dosage of the triethylamine is reduced, the dosage of the triethylamine is saved, the core making period is shortened, and the production cost is reduced.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of the core-pulling base of the present invention;

FIG. 3 is a side view of the structure of the present invention;

FIG. 4 is a schematic view of a part of the structure of the present invention;

FIG. 5 is a schematic structural diagram of the core box of the present invention;

fig. 6 is a schematic view of the compression flow direction of the present invention.

In the figure: 1. a core box back plate; 2. a core box; 3. a negative pressure trachea; 4. a support base; 5. guiding the wear-resistant strips; 6. lifting the suspender; 7. positioning a long pin sleeve; 8. a sand shooting port; 9. a resin sand core; 10. an air duct; 11. Drawing the core rod; 12. a core-pulling base.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1-6, a device for promoting triethylamine to catalyze resin sand hardening comprises a core box back plate 1, a core box 2, a core pulling base 12 and a core pulling rod 11, wherein a supporting base 4 is vertically installed at the bottom of the core box back plate 1, the core pulling base 12 is installed on the supporting base 4, the core pulling rod 11 is installed on the core pulling base 12, a negative pressure air pipe 3 is arranged below the core pulling base 12, the negative pressure air pipe 3 is installed on an air pipe 10 and communicated with the air pipe 10, the air pipe 10 is arranged on the core pulling base 12, both the negative pressure air pipe 3 and the air pipe 10 are provided with interfaces, the negative pressure air pipe 3 is connected with an external compressed air pipe, the core pulling base 12 is connected with the compressed air pipe through the negative pressure air pipe 3, the external part of the core pulling base 12 has high air pressure due to high air force, when the core box base 12 is connected with a compressed air pipe through the negative pressure air pipe 3, triethylamine at the air flowing position rapidly flows to the bottom of the core box 2 due to pressure difference, rapid hardening of the resin sand core 9 is promoted, the triethylamine is a curing agent, a resin component I and a component II in the resin sand core 9 rapidly react when meeting the triethylamine, the resin sand is hardened and formed, the triethylamine is saved, the production period of core making is shortened, the quality of the sand core is improved, and the production cost is reduced, the core box 2 is installed on one side of the core box back plate 1 close to the core box base 12, exhaust plugs are arranged on the inner cavity of the core box 2 and the core box base 12, the triethylamine reaches all areas of the core box 2 through the exhaust plugs, the core box 2 is communicated with the core box base 12, the resin sand core 9 is arranged in the core box 2, a sand shooting opening 8 is arranged at the top of the core box 2, the sand shooting opening 8 is communicated with the core box 2, positioning length-length pin sleeves 7 are arranged on two sides of the core box 2, guide wear-resistant strips 5 are arranged on one side of the core box base 12, and lifting rods 6 are arranged on two sides of the core back plate 1.

In conclusion, according to the device for promoting triethylamine to catalyze the hardening of the resin sand, the resin sand is injected into the inner cavity of the core box 2 through the sand injection port 8 during core making, then the triethylamine curing agent is injected, the resin sand is hardened and formed in the core box 2, the resin sand is taken out after die opening, the resin sand is placed in a sand mold after being formed, a casting inner cavity outline is formed after pouring, the negative pressure air pipe 3 is designed below the core pulling base 12, during core making, an external compressed air pipe is inserted into a port of the negative pressure air pipe 3 on the side surface of the core pulling base 12, a compressed air switch is opened, compressed air enters from the port of the negative pressure air pipe 3 and flows out from the port of the air pipe 10, the external part of the core pulling base 12 is large in air force and low in pressure, when the core pulling base 12 is connected with the compressed air pipe through the negative pressure air pipe 3, the triethylamine flows through the port due to pressure difference, so that the triethylamine quickly flows to the bottom of the core box 2, the resin sand core 9 is accelerated to be hardened and then flows out through the exhaust plug, the triethylamine is a curing agent, so that the resin sand is hardened and formed, the triethylamine is saved, the production cycle of the core making is shortened, the quality of the sand is improved, and the production cost is reduced.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a promote triethylamine catalysis resin sand device of hardening, includes core box backplate (1), core box (2), base of loosing core (12) and core pulling stick (11), its characterized in that: the core box comprises a core box back plate (1), wherein a supporting base (4) is vertically installed at the bottom of the core box back plate (1), a core pulling base (12) is installed on the supporting base (4), a core pulling rod (11) is installed on the core pulling base (12), a negative pressure air pipe (3) is arranged below the core pulling base (12), a core box (2) is installed on one side, close to the core pulling base (12), of the core box back plate (1), and a resin sand core (9) is arranged in the core box (2).

2. The device for promoting triethylamine catalyzed resin sand hardening as claimed in claim 1, wherein: and the inner cavity of the core box (2) and the core-pulling base (12) are respectively provided with an exhaust plug, triethylamine reaches each region of the core box (2) through the exhaust plugs, and the core box (2) is communicated with the core-pulling base (12).

3. The device for promoting triethylamine catalytic resin sand hardening according to claim 1, wherein: the negative pressure air pipe (3) is installed on the air pipe (10) and communicated with the air pipe (10), the air pipe (10) is arranged on the core pulling base (12), connectors are arranged on the negative pressure air pipe (3) and the air pipe (10), and the negative pressure air pipe (3) is connected with an external compressed air pipe.

4. The device for promoting triethylamine catalytic resin sand hardening according to claim 1, wherein: the top of the core box (2) is provided with a sand shooting opening (8), the sand shooting opening (8) is communicated with the core box (2), and both sides of the core box (2) are provided with positioning length pin sleeves (7).

5. The device for promoting triethylamine catalytic resin sand hardening according to claim 1, wherein: one side of the core-pulling base (12) is provided with a guide wear-resistant strip (5), and two sides of the core box back plate (1) are provided with lifting rods (6).

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