阅读说明：本技术 一种消失模铸造用具有冷却功能的砂库 (Sand warehouse with cooling function for lost foam casting ) 是由 吴爱珠 鲍明富 于 2020-08-17 设计创作，主要内容包括：本发明属于消失模铸造技术领域,尤其涉及一种消失模铸造用具有冷却功能的砂库。本发明要解决的技术问题是提供一种通过水冷和风冷对石英砂降温的消失模铸造用具有冷却功能的砂库。一种消失模铸造用具有冷却功能的砂库,包括有支座、砂库、护栏、出砂斗、降温装置、风冷装置和阀门装置；砂库底部通过多个支座安装于地面,砂库顶部安装有护栏；砂库底部安装有出砂斗,用于卸砂；出砂斗底部出口处通过法兰盘连接有阀门装置；出砂斗上部设有风冷装置。本发明通过降温装置和风冷装置加快了石英砂的冷却速度,大大提高了生产效率。(The invention belongs to the technical field of lost foam casting, and particularly relates to a sand silo with a cooling function for lost foam casting. The invention aims to provide a sand warehouse with a cooling function for lost foam casting, which cools quartz sand through water cooling and air cooling. A sand warehouse with a cooling function for lost foam casting comprises a support, a sand warehouse, a guardrail, a sand outlet hopper, a cooling device, an air cooling device and a valve device; the bottom of the sand silo is arranged on the ground through a plurality of supports, and the top of the sand silo is provided with a guardrail; a sand outlet hopper is arranged at the bottom of the sand warehouse and used for discharging sand; the outlet at the bottom of the sand outlet hopper is connected with a valve device through a flange plate; an air cooling device is arranged at the upper part of the sand outlet hopper. According to the invention, the cooling speed of the quartz sand is increased by the cooling device and the air cooling device, and the production efficiency is greatly improved.)

1. A sand silo with a cooling function for lost foam casting is characterized by comprising a support (1), a sand silo (2), a guardrail (3), a sand outlet hopper (4), a cooling device (5), an air cooling device (6) and a valve device (7); the bottom of the sand warehouse (2) is arranged on the ground through a plurality of supports (1), and the top of the sand warehouse (2) is provided with a guardrail (3); a sand outlet hopper (4) is arranged at the bottom of the sand warehouse (2) and used for discharging sand; an outlet at the bottom of the sand outlet hopper (4) is connected with a valve device (7) through a flange plate (401); the upper part of the sand outlet hopper (4) is provided with an air cooling device (6) which is used for sending cold air into the sand warehouse (2); the lower part of the sand warehouse (2) is provided with a cooling device (5), and the cooling device (5) penetrates through the sand warehouse (2).

2. The sand silo with the cooling function for the lost foam casting according to claim 1, wherein the cooling device (5) comprises a water inlet tank (501), a cooling water pipe (504) and a water outlet tank (506); the water inlet tank (501) is arranged on the front side surface of the lower part of the sand warehouse (2), the water outlet tank (506) is arranged on the rear side surface of the lower part of the sand warehouse (2), and the water inlet tank (501) and the water outlet tank (506) are symmetrically arranged; the bottom of the front side surface of the water inlet tank (501) is communicated with a water inlet pipe (502), the end part of the water inlet pipe (502) positioned in the water inlet tank (501) is provided with a first blocking plate (508), and a plurality of through holes (503) are uniformly distributed along the circumferential direction; the top of the rear side surface of the water outlet tank (506) is communicated with a water outlet pipe (507); a plurality of cooling water pipes (504) are communicated between two adjacent side surfaces of the water inlet tank (501) and the water outlet tank (506) in a net shape, and the cooling water pipes (504) penetrate through the sand warehouse (2).

3. The sand silo with the cooling function for the lost foam casting as claimed in claim 2, wherein the air cooling device (6) comprises an inverted V-shaped plate (601), a support rod (602), an air cooling pipe (603) and a stainless steel net (607); the front end of the inverted V-shaped plate (601) is fixedly connected to the upper part of the front side of the inner wall of the sand outlet hopper (4), the rear end of the inverted V-shaped plate is fixedly connected to the upper part of the rear side of the inner wall of the sand outlet hopper (4), and a plurality of support rods (602) are uniformly distributed at the lower part of the inverted V-shaped plate (601); the front side surface of the sand outlet hopper (4) is communicated with an air cooling pipe (603), and the air cooling pipe (603) extends into the sand outlet hopper (4) and is positioned above the supporting rod (602); a plurality of air holes (604) are uniformly distributed on the end part of the air cooling pipe (603) positioned in the sand outlet hopper (4) along the circumferential direction, the outer surface of the air cooling pipe is wrapped with a stainless steel net (607) and is hooped by an iron wire ring (608); the end part of the air cooling pipe (603) close to the rear side surface of the sand outlet hopper (4) is provided with a second blocking plate (606).

4. The sand silo with cooling function for lost foam casting according to claim 3, wherein the valve device (7) comprises a sand outlet pipe (701), a first buffer plate (702), a second buffer plate (704), a hydraulic cylinder (705) and an insert plate (706); go out sand hopper (4) bottom and be connected with out sand pipe (701) through ring flange (401), it is equipped with first buffer board (702) to go out sand pipe (701) upper portion, first buffer board (702) below is equipped with second buffer board (704), it is equipped with pneumatic cylinder (705) to go out sand pipe (701) outside, pneumatic cylinder (705) output is connected with picture peg (706), picture peg (706) top and second buffer board (704) bottom contact, all open on first buffer board (702), second buffer board (704) and picture peg (706) and go out sand hole (703).

5. The sand silo with the cooling function for the lost foam casting according to claim 4, wherein a first connecting rod (402) is arranged between the front side and the rear side of the inner wall of the sand outlet hopper (4), and a second connecting rod (403) is arranged between the left side and the right side of the inner wall of the sand outlet hopper (4).

6. The sand silo with the cooling function for the lost foam casting according to claim 5, wherein a plurality of supporting plates (505) through which the cooling water pipes (504) penetrate are arranged at the lower part in the sand silo (2) and are used for supporting the cooling water pipes (504).

7. The sand silo with the cooling function for the lost foam casting according to claim 6, wherein an L-shaped baffle (707) is screwed below the first buffer plate (702), and the L-shaped baffle (707) is also provided with a sand outlet (703).

8. The sand silo with the cooling function for the lost foam casting according to claim 7, wherein the number of the cooling devices (5) is 8-16, and the cooling devices are arranged symmetrically in an upper row and a lower row.

Technical Field

The invention belongs to the technical field of lost foam casting, and particularly relates to a sand silo with a cooling function for lost foam casting.

Background

In the steel casting industry, particularly in the technical field of lost foam casting, due to continuous improvement and development of new processes of lost foam casting, the processes are continuously perfected and improved. The lost foam casting is generally that paraffin or foam models with similar size and shape to castings are bonded to form a model, refractory paint is coated on the model to be dried, the model is placed in a sand box, then the model is filled in casting sand to be vibrated and modeled, finally the model is poured under negative pressure to be gasified, liquid metal occupies the position of the model, the model is solidified and cooled to form the castings, and after the castings are taken out of a sand mould, the rest of the castings are used casting sand. The lost foam casting is also a new process with almost no margin and accurate forming. The process has the advantages of no need of taking a mold and no parting surface, so that the casting has no flash, burr and draft angle, and the size error caused by core combination is reduced. The surface roughness of the casting can reach Ra3.2 to 12.5 mu m, and the size precision of the casting can reach CT7 to 9; the machining allowance is 1.5 to 2mm at most, the machining cost is greatly reduced, and the machining time can be reduced by 40 to 50 percent compared with the traditional sand casting method. However, the initial temperature of the casting sand after being demolded is relatively high, usually more than 200 ℃, and in the production of the lost foam, when the sand temperature of the casting sand is too high, the film can be scalded in the molding process to damage the film, so that the temperature of the casting sand is usually controlled to be less than 60 ℃ as much as possible before molding, and the casting sand can be reused. Therefore, efficient cooling equipment is needed to quickly cool the casting sand after the initial demoulding, so that the casting sand can be further recycled. At present, the casting industry generally has three cooling modes for hot sand of castings, firstly, the hot casting sand is placed in an open place for natural airing, so that the hot sand is cooled naturally, but the cooling is slow, the cooling time is too long, so that a large amount of dry sand turnover is needed in production, and the airing of the hot sand also needs a place with a large area, so that the production cost is increased; secondly, air cooling is carried out, namely hot sand is placed on specific equipment, ventilation is carried out on the equipment, heat of the hot sand is taken away, the cooling speed is slow, and a large amount of dust is generated to pollute air, so that the working environment condition is severe; thirdly, cool down hot sand through heat transfer device, adopt the cooling method of drum-type promptly, the spray pipe sprays water to the surface of cylinder, thereby absorb the heat of cylinder and make the hot sand cooling in the cylinder, the rotatory very big power that needs of drive cylinder, the energy consumption when leading to the time spent is than higher, and the water sprays partly formation steam behind the cylinder surface, liquid water then sprinkles around the cylinder, lead to operational environment very poor, and adopt this kind of cooling method to hot sand, make hot sand produce the heat and wasted completely, do not obtain effective utilization, thereby cause the waste of resource.

Disclosure of Invention

The invention aims to overcome the defect that the production speed is slow due to natural cooling of recycled high-temperature quartz sand in the prior art, and the technical problem to be solved by the invention is to provide a sand silo with a cooling function for evaporative pattern casting, wherein the cooling speed of the quartz sand is accelerated by water cooling and air cooling.

The invention is achieved by the following specific technical means:

a sand warehouse with a cooling function for lost foam casting comprises a support, a sand warehouse, a guardrail, a sand outlet hopper, a cooling device, an air cooling device and a valve device; the bottom of the sand silo is arranged on the ground through a plurality of supports, and the top of the sand silo is provided with a guardrail; a sand outlet hopper is arranged at the bottom of the sand warehouse and used for discharging sand; the outlet at the bottom of the sand outlet hopper is connected with a valve device through a flange plate; the upper part of the sand outlet hopper is provided with an air cooling device which is used for sending cold air into the sand warehouse; the lower part of the sand warehouse is provided with a cooling device, and the cooling device penetrates through the sand warehouse.

Furthermore, the cooling device comprises a water inlet tank, a cooling water pipe and a water outlet tank; the water inlet tank is arranged on the front side surface of the lower part of the sand warehouse, the water outlet tank is arranged on the rear side surface of the lower part of the sand warehouse, and the water inlet tank and the water outlet tank are symmetrically arranged; the bottom of the front side surface of the water inlet tank is communicated with a water inlet pipe, the end part of the water inlet pipe, which is positioned in the water inlet tank, is provided with a first blocking plate, and a plurality of through holes are uniformly distributed along the circumferential direction; the top of the rear side surface of the water outlet tank is communicated with a water outlet pipe; a plurality of cooling water pipes are communicated in a net shape between two adjacent side surfaces of the water inlet tank and the water outlet tank, and the cooling water pipes penetrate through the sand warehouse.

Further, the air cooling device comprises an inverted V-shaped plate, a support rod, an air cooling pipe and a stainless steel mesh; the front end of the inverted V-shaped plate is fixedly connected to the upper part of the front side of the inner wall of the sand outlet hopper, the rear end of the inverted V-shaped plate is fixedly connected to the upper part of the rear side of the inner wall of the sand outlet hopper, and a plurality of support rods are uniformly distributed at the lower part of the inverted V-shaped plate; the front side surface of the sand outlet hopper is communicated with an air cooling pipe, and the air cooling pipe extends into the sand outlet hopper and is positioned above the supporting rod; a plurality of air holes are uniformly distributed on the end part of the air cooling pipe in the sand outlet hopper along the circumferential direction, and the outer surface of the air cooling pipe is wrapped with a stainless steel mesh and is hooped by an iron wire ring; and a second blocking plate is arranged at the end part of the air cooling pipe close to the rear side surface of the sand outlet hopper.

Furthermore, the valve device comprises a sand outlet pipe, a first buffer plate, a second buffer plate, a hydraulic cylinder and an inserting plate; go out sand hopper bottom and be connected with out the sand pipe through the ring flange, go out sand pipe upper portion and be equipped with first buffer board, first buffer board below is equipped with the second buffer board, goes out sand outside of tubes side and is equipped with the pneumatic cylinder, and the pneumatic cylinder output is connected with the picture peg, and the picture peg top contacts bottom the second buffer board, has all opened out the sand hole on first buffer board, second buffer board and the picture peg.

Furthermore, a first connecting rod is arranged between the front side and the rear side of the inner wall of the sand outlet hopper, and a second connecting rod is arranged between the left side and the right side of the inner wall of the sand outlet hopper.

Furthermore, the lower part in the sand warehouse is provided with a plurality of supporting plates through which the cooling water pipes penetrate, and the supporting plates are used for supporting the cooling water pipes.

Furthermore, the lower part of the first buffer plate is connected with an L-shaped baffle in a threaded manner, and the L-shaped baffle is also provided with a sand outlet.

Furthermore, the number of the cooling devices is 8-16, and the cooling devices are symmetrically arranged in an upper row and a lower row.

Compared with the prior art, the invention has the following beneficial effects:

according to the invention, the cooling device capable of circulating cold water is arranged at the lower part of the sand warehouse, so that quartz sand with higher temperature can uniformly contact with the cooling device for water cooling after entering the sand warehouse, and then cold air is sent into the cooling device through the air cooling device arranged in the sand outlet hopper for further cooling, thus the cooling speed of the quartz sand is accelerated, and the production efficiency is greatly improved.

Drawings

Fig. 1 is a schematic front view of the present invention.

Fig. 2 is a right-view structural diagram of the present invention.

Fig. 3 is a schematic right-view structural diagram of the cooling device of the present invention.

Fig. 4 is a schematic front view of the cooling device of the present invention.

Fig. 5 is a schematic structural view of the sand outlet hopper in a front view.

Fig. 6 is a right-view structural schematic diagram of the sand outlet hopper.

Fig. 7 is a schematic top view of the sand outlet hopper according to the present invention.

Fig. 8 is a schematic front view of the air cooling device of the present invention.

FIG. 9 is a right side view of the inverted V-shaped plate of the present invention.

Fig. 10 is a right-view structural schematic view of the air-cooling duct of the present invention.

FIG. 11 is an enlarged view of A of FIG. 10 according to the present invention.

Fig. 12 is a front view of the valve device of the present invention.

The labels in the figures are: 1-support, 2-sand warehouse, 3-guardrail, 4-sand outlet hopper, 401-flange plate, 402-first connecting rod, 403-second connecting rod, 5-cooling device, 501-water inlet tank, 502-water inlet pipe, 503-through hole, 504-cooling water pipe, 505-supporting plate, 506-water outlet tank, 507-water outlet pipe, 508-first blocking plate, 6-air cooling device, 601-inverted V-shaped plate, 602-support rod, 603-air cooling pipe, 604-air hole, 606-second blocking plate, 607-stainless steel net, 608-iron wire ring, 7-valve device, 701-sand outlet pipe, 702-first buffer plate, 703-sand outlet hole, 704-second buffer plate, 705-hydraulic cylinder, 706-inserting plate, 707-L-shaped baffle.

Detailed Description

The invention is further described below with reference to the accompanying drawings.