CN217541261U

CN217541261U - Silica sol shell rapid drying equipment

Info

Publication number: CN217541261U
Application number: CN202221094913.0U
Authority: CN
Inventors: 孙宏伟
Original assignee: Weifang Boyuan Power Technology Co ltd
Current assignee: Weifang Boyuan Power Technology Co ltd
Priority date: 2022-05-09
Filing date: 2022-05-09
Publication date: 2022-10-04
Anticipated expiration: 2032-05-09

Abstract

The utility model provides a silica sol shell rapid draing equipment, including dry storehouse, be equipped with import and export on the dry storehouse, import and export all are equipped with the door, be equipped with in the dry storehouse and be used for hanging the mechanism that hangs of casing, be used for the drive to hang the actuating mechanism that the mechanism removed, can carry out vacuum treatment's vacuum mechanism, can heat up the heating mechanism, can take a breath the mechanism of taking a breath to dry storehouse with dry storehouse, can inspect the inspection mechanism of humiture in the dry storehouse. The equipment has the advantages of relatively simple structure, convenient use, rapid shell drying, high shell strength after drying, stable product quality, short silica sol shell drying period after the equipment is used for drying, and the silica sol shell drying period can be controlled within 16 hours and is 1/5 of the traditional drying time.

Description

Silica sol shell rapid drying equipment

Technical Field

The utility model relates to a wax matrix drying technology field especially relates to a silica sol shell rapid draing equipment.

Background

At present, in investment casting of nonferrous alloys, stainless steel, high-temperature alloys and the like internationally, a silica sol shell is the first choice, the silica sol is a binder commonly used for investment casting, and is a stable colloidal solution formed by dispersing amorphous silica microparticles in water, the silica sol is convenient to use, the coating stability is good, the shell does not need chemical hardening, the supply and demand are simple, the shell has high shell high-temperature strength and high-temperature deformation resistance, and the prepared shell has good high-temperature performance and high size precision.

However, silica sols have the disadvantage that they have poor wetting properties for wax patterns and therefore require the addition of surfactants to improve the coating application. In addition, the drying speed of the silica sol shell is full, the wet strength of the shell is low, and the shell manufacturing period is long.

But at present there is not the better mode to carry out quick drying, in order to provide its drying rate, I have developed a quick drying equipment, enter from this one end, under the mutual effect of technological parameters such as certain pressure, temperature, carry out a cycle drying inside, just can satisfy the operation requirement after coming out.

The current research direction of the silica sol shell quick-drying technology is mainly to change the commonly known quick-drying glue of a silica sol additive aiming at the silica sol, so that the silica sol is dried more quickly than the common silica sol, but the quick-drying silica sol is expensive and 3 to 4 times as expensive as the common silica sol, the quick-drying effect is not ideal, only 1/4 of the shell making period is shortened, and the economic benefit is not obvious.

At present, each silica sol shell has about 8 layers, the common drying process needs at least 5-6 days for complete drying, and the drying period is too long, thereby affecting the production efficiency.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to the weak point that prior art exists, provide a silica sol shell rapid draing equipment, this equipment structure is simple relatively, convenient to use, the shell is dry rapidly, dry back shell intensity is high, product quality is stable, the silica sol shell drying cycle through above-mentioned equipment drying is short, steerable in 16 hours, is 1/5 of traditional drying time.

The technical solution of the utility model is that, a following silica sol shell rapid drying equipment is provided, including dry storehouse, be equipped with import and export on the dry storehouse, import and export all are equipped with the door, be equipped with in the dry storehouse and be used for hanging the mechanism that hangs of casing, be used for the drive to hang the actuating mechanism that the mechanism removed, can carry out vacuum treatment's vacuum mechanism, can carry out the heating mechanism that heaies up, the mechanism of taking a breath that can take a breath to dry storehouse with dry storehouse, can inspect the inspection mechanism of humiture in the dry storehouse.

Preferably, the drying bin is annular and barrel-shaped, bin doors are arranged at two ends of the drying bin through communication, and sealing gaskets are arranged on the bin doors.

Preferably, the drying chamber is internally or/and externally provided with an annular reinforcing ring for reinforcing the strength of the drying chamber.

Preferably, a actuating mechanism for driving suspension mechanism removes includes the track, be equipped with the crossbeam that can move along the track in the track, the crossbeam passes through the cooperation of sprocket and chain and moves along the track, the track cross-section is one side open-ended C type structure, the crossbeam tip inserts in the track opening, be equipped with the bearing between crossbeam and the track, the bearing suit is inserted the track open-ended tip at the crossbeam, the bearing is located orbital C type inslot.

Preferably, the bearing inner ring is sleeved on the cross beam, the bearing outer ring rolls along the inner surface of the track, a driven sprocket is further arranged at the end part, inserted into the opening of the track, of the cross beam, the driven sprocket and the bearing are arranged in parallel, the driven sprocket is located in a C-shaped groove of the track, a gap is formed between the sprocket and the inner wall of the track, a chain is arranged in the gap, the driven sprocket is located on the inner side of the bearing, and the bearing is close to one side of the opening of the C-shaped groove of the track.

Preferably, the track includes two, and the annular setting is at the both ends of crossbeam, be equipped with a plurality of crossbeam on the track, the chain way of homonymy becomes annular wire-wound connection after arranging the driven sprocket on the crossbeam in proper order, still includes driving motor, the last drive sprocket that is equipped with of driving motor, drive sprocket can drive the chain and remove.

Preferably, the hanging mechanism for hanging the shell comprises a hook, the hook is sleeved on the cross beam, and the hook and the cross beam are in clearance fit.

Preferably, the vacuum mechanism capable of carrying out vacuum treatment on the drying bin comprises a vacuum generator, and the vacuum generator is communicated with the inside of the drying bin through a pipeline.

Preferably, the heating mechanism capable of heating the drying chamber includes electromagnetic heaters disposed in the drying chamber, and the electromagnetic heaters are uniformly disposed in the drying chamber.

Preferably, the ventilation mechanism capable of ventilating comprises a blower, the blower is communicated with the interior of the drying bin through a pipeline, and a control valve is arranged on the pipeline between the blower and the drying bin.

Preferably, the inspection means capable of inspecting the temperature and humidity in the drying compartment includes a temperature sensor and a humidity sensor provided in the drying compartment.

The beneficial effects of the technical scheme are as follows: by utilizing the equipment, the electromagnetic heating mechanism is arranged in the vacuum tank, the shell of the suspension line is uniformly heated by the electromagnetic heating mechanism in the motion process of the suspension line, water is quickly evaporated under low vacuum, the temperature and humidity monitoring mechanism monitors that a certain value is reached in the vacuum chamber, the control system automatically stops the electromagnetic heating system, the exhaust system is opened to communicate the vacuum chamber with the atmosphere, after the moisture in the vacuum chamber is exhausted, the temperature and humidity reach a set value, the control system switches on the vacuum pump, and the power supply of the electromagnetic heating system performs the next drying period until the shell is dried.

The silica sol shells are dried thoroughly, the silica sol redissolution phenomenon does not exist, the strength of the solid silica sol shells is higher than that of the common drying process, each silica sol shell has about 8 layers, the drying period of each layer of shell is about 1.5 hours, the drying time of each 8 layers of silica sol shells is about 12 hours, the auxiliary time is about 16 hours, the investment precision casting is revolutionarily changed, and the economic benefit and the social benefit are huge.

This transmission structure adopts the circular orbit as the orbit, and inside is equipped with can be along orbital motion's crossbeam, hangs the silica sol type on the crossbeam, through a periodic removal, realizes the drying, because inside temperature, pressure etc. of drying equipment set up and adopt motor drive's chain drive mode, and equipment stability is strong, is convenient for maintain and maintain. Equipment self adopts revolution mechanic, gets into from one end, and the other end comes out for the crossbeam that hangs the silica sol type can get back to initial position voluntarily, and the interval is invariable between the adjacent silica sol type, prevents the dry effect subalternation problem that extrusion or local temperature are inhomogeneous to lead to.

Drawings

Fig. 1 is a schematic structural view of a silica sol shell rapid drying apparatus.

Fig. 2 is a schematic view of a driving mechanism for driving the suspension mechanism to move (only one side rail is shown).

Fig. 3 is a schematic view of a mounting structure of the inner cross beam of the track in fig. 1.

Detailed Description

For convenience of explanation, the silica sol type drying transmission mechanism in pressure casting of the present invention will be described in detail with reference to fig. 1 to 3.

The utility model provides a silica sol shell rapid draing equipment, includes dry storehouse 11, be equipped with import 11.1 and export 11.2 on the dry storehouse 11, import 11.1 and export 11.2 all are equipped with door 12, be equipped with in the dry storehouse 11 and be used for hanging the casing hang the mechanism, be used for the drive to hang the actuating mechanism that the mechanism removed, can carry out vacuum treatment's vacuum mechanism, can carry out the heating mechanism that heaies up, the mechanism of taking a breath that can take a breath to dry storehouse 11 with dry storehouse 11, can inspect the inspection mechanism of humiture in the dry storehouse 11.

The drying bin 11 is in an annular barrel shape, a fixed seat 20 is arranged at the bottom of the drying bin 11, bin doors 12 are arranged at two ends of the drying bin 11 through communication, and sealing gaskets are arranged on the bin doors 12; the inside or/and the outside of the drying bin 11 is provided with an annular reinforcing ring 19 for reinforcing the strength of the drying bin.

A actuating mechanism for driving hang mechanism and remove includes track 1, be equipped with crossbeam 2 that can remove along track 1 in the track 1, crossbeam 2 removes along track 1 through the cooperation of sprocket and chain 5, utilizes track 1 to inject the motion trail of crossbeam, has both guaranteed the position of treating dry silica sol type in equipment, also to the silica sol type that can realize different structures carry out the setting of different drying parameters, utilizes different operating duration to realize different drying effects.

The cross section of the track 1 is of a C-shaped structure with an opening at one side, the track 1 is generally made of aluminum alloy track strips, the structural strength is high, and the end part of the cross beam 2 is inserted into the opening of the track 1; a bearing 3 is arranged between the cross beam 2 and the track 1, and the bearing 3 is sleeved at the end part of the cross beam 2 inserted into the opening of the track 1; the bearing 3 is located C type inslot of

track

1, 3 inner circles of bearing cover are on crossbeam 2, 3 outer lanes of bearing roll along track 1's internal surface, utilize antifriction bearing can realize reducing frictional force, improve the smooth and easy degree of crossbeam removal in-process, reduce friction and wearing and tearing.

The end part of the beam 2 inserted into the opening of the track 1 is also provided with a driven chain wheel 4, the driven chain wheel 4 is arranged in parallel with the bearing 3, the driven chain wheel 4 is positioned in a C-shaped groove of the track 1, a gap is arranged between the chain wheel and the inner wall of the track 1, and a chain 5 is arranged in the gap; the driven chain wheel 4 is positioned on the inner side of the bearing 3, and the bearing 3 is close to one side of the opening of the C-shaped groove of the track 1; the two tracks 1 are annularly arranged at two ends of the cross beam 2; a plurality of cross beams 2 are arranged on the track 1, and driven chain wheels 4 on the cross beams 2 are sequentially arranged on the chains 5 on the same side in a path to form annular winding connection; the beam 2 is provided with a plurality of hooks 6, the hooks 6 are sleeved on the beam 2, and the hooks 6 are in clearance fit with the beam 2; still include driving motor 7, driving motor 7 installs on the frame, be equipped with driving sprocket 8 on driving motor 7, driving sprocket 8 can drive the removal of chain 5. Utilize driving motor 7 to rotate, it rotates to drive driving sprocket, driving sprocket's position has two kinds of modes, one kind is that driving sprocket 8 also is located orbital C type inslot, and be connected with the chain, another kind is equipped with a breach portion on the track, driving sprocket 8 inserts the chain through the drive tooth of breach portion on with driving sprocket, no matter which kind of mode, the purpose all is that driving sprocket 8 drives the chain translation, still have a plurality of driven sprocket on the chain, chain drive driven sprocket removes, driven sprocket is driving the crossbeam and removes, thereby entire system's transmission function has been realized.

Driven sprocket 4 be located the one end or both ends of crossbeam 2, this technical scheme is because the track that adopts C type structure, and the inside flat groove that is of itself, and directional stability is good between the bearing, can only set up driven sprocket at one section of crossbeam, one end provides power, and the other end utilizes the roll of bearing and the relevant cooperation between bearing and the C type groove can realize normal removal.

A hang mechanism for hanging casing includes

couple

6, 6 suits of couple are on crossbeam 2, be clearance fit between couple 6 and the crossbeam 2.

The vacuum mechanism capable of performing vacuum treatment on the drying bin 11 comprises a vacuum generator 13, and the vacuum generator 13 is communicated with the inside of the drying bin 11 through a pipeline.

The heating mechanism capable of heating the drying bin 11 comprises an electromagnetic heater 14 arranged in the drying bin 11, and the electromagnetic heater 14 is uniformly arranged in the drying bin 11.

The mechanism of taking a breath that can take a breath includes air-blower 15, air-blower 15 passes through pipeline and the inside UNICOM of dry storehouse 11, be equipped with control valve 16 on the pipeline between air-blower 15 and the dry storehouse 11.

The inspection means capable of inspecting the temperature and humidity in the drying compartment 11 includes a temperature sensor 17 and a humidity sensor 18 provided in the drying compartment 11.

The working principle is as follows: the method for drying the silica sol shell by using the equipment comprises a filling process, a drying process and a workpiece taking process;

1. the filling process comprises: the bin gate 12 of the feeding port is opened, the silica sol shell to be dried is hung on the hook, the beam 2 on which the silica sol shell is hung is conveyed inwards by manually operating the driving motor 7, and the hook 6 on which the silica sol shell is not hung is conveyed outwards until the silica sol shell is completely hung.

2. The drying step comprises: closing a feed inlet bin door 12, locking and sealing, starting a vacuum generator 13, setting the pressure of vacuum degree in a drying bin 11 to be 0.06-0.08MPa, utilizing an electromagnetic heater 14 to raise the temperature in the bin body to 22 +/-2 ℃, starting a driving motor 7, automatically driving the driving motor 7 to continuously rotate at a constant speed, keeping the running speed of a silica sol shell in the drying bin 11 to be 0.02m/s, utilizing a temperature detection device to control the temperature in the drying bin 11, stopping the electromagnetic heater 14 when the temperature is raised to 24 ℃, working again when the temperature is lower than 20 ℃, ensuring that the temperature in the drying bin 11 is constant at 22 ℃, utilizing a humidity sensor 18 to detect that the relative humidity of the drying bin 11 is 70%, stopping the vacuum generator 13, starting a control valve 16 and an air blower 15, discharging the internal humidity outwards, discharging the drying air again, closing the control valve 16 and the air blower 15, working again when the humidity sensor 18 detects that the relative humidity of the drying bin 11 is 50%, working again, stopping the pressure generator 13, heating the electromagnetic heater 14.06-0.08 MPa, and heating again when the temperature of the drying bin 11 is continuously heated for 2 hours.

3. The workpiece taking process comprises the following steps: firstly, stopping the work of the electromagnetic heater 14, stopping the work of the vacuum generator 13, opening the control valve 16 and the air blower 15, exchanging the air in the drying bin 11 with external control, simultaneously cooling the silica sol shell by using air cooling, closing the control valve 16 and the air blower 15 when the temperature in the drying bin 11 reaches 22 ℃, opening the discharge port bin door 12, taking down the silica sol shell from the hook, manually controlling the operation of the driving motor, moving the beam 2 internally hanging the silica sol shell outwards until all the silica sol shells are taken down, and closing the discharge port bin door 12.

This technical scheme passes through PLC automatic control driving motor, vacuum generator, the control valve, the air-blower, electromagnetic heater, the operation that uses PLC control electrical components and parts at present is prior art with stopping, the condition that utilizes temperature sensor and humidity transducer to take place the signal as PLC control system is the common control mode of automatic control system at present, this is no longer described its theory of operation again, driving motor, vacuum generator, the control valve, the air-blower, electromagnetic heater, temperature sensor and humidity transducer all are connected with the PLC controller through the cable.

This transmission structure adopts the circular orbit as the orbit, and inside is equipped with can be along orbital motion's crossbeam, hangs the silica sol type on the crossbeam, through a periodic removal, realizes the drying, because inside temperature, pressure etc. of drying equipment set up and adopt motor drive's chain drive mode, and equipment stability is strong, is convenient for maintain and maintain. Equipment self adopts revolution mechanic, gets into from one end, and the other end comes out for the crossbeam that hangs the silica sol type can get back to initial position voluntarily, and interval is invariable between the adjacent silica sol type, prevents the dry effect subalternation problem that extrusion or local temperature are inhomogeneous to lead to.

In the above embodiments, the best mode of the present invention has been described, it is obvious that many changes can be made under the inventive concept, and here, it should be explained that any changes made under the inventive concept will fall into the protective scope of the present invention.

Claims

1. A silica sol shell rapid drying device is characterized in that: including dry storehouse (11), be equipped with import (11.1) and export (11.2) on dry storehouse (11), import (11.1) and export (11.2) all are equipped with door (12), be equipped with in dry storehouse (11) and be used for hanging the mechanism of hanging of casing, be used for the drive to hang the actuating mechanism that the mechanism removed, can carry out vacuum treatment's vacuum mechanism, can carry out the heating mechanism that heaies up, the mechanism of taking a breath that can take a breath to dry storehouse (11) with dry storehouse (11), can inspect the inspection mechanism of humiture in dry storehouse (11).

2. The silica sol shell flash drying apparatus of claim 1, wherein: the drying bin (11) is annular and barrel-shaped, bin doors (12) are arranged at two ends of the drying bin (11) through communication, and sealing gaskets are arranged on the bin doors (12).

3. The silica sol shell flash drying apparatus of claim 2, wherein: an annular reinforcing ring (19) for reinforcing the strength of the drying bin is arranged inside or/and outside the drying bin (11).

4. The silica sol shell flash drying apparatus of claim 1, wherein: the driving mechanism for driving the suspension mechanism to move comprises a track (1), a cross beam (2) which can move along the track (1) is arranged in the track (1), the beam (2) moves along the track (1) through the matching of the chain wheel and the chain (5), the cross section of the track (1) is of a C-shaped structure with an opening at one side, the end part of the cross beam (2) is inserted into the opening of the track (1), a bearing (3) is arranged between the cross beam (2) and the track (1), the bearing (3) is sleeved at the end part of the beam (2) inserted into the opening of the track (1), the bearing (3) is positioned in a C-shaped groove of the track (1), an inner ring of the bearing (3) is sleeved on the cross beam (2), the outer ring of the bearing (3) rolls along the inner surface of the track (1), the end part of the beam (2) inserted into the opening of the track (1) is also provided with a driven chain wheel (4), the driven chain wheel (4) and the bearing (3) are arranged in parallel, the driven chain wheel (4) is positioned in a C-shaped groove of the track (1), a gap is arranged between the chain wheel and the inner wall of the track (1), a chain (5) is arranged in the gap, the driven chain wheel (4) is located on the inner side of the bearing (3), and the bearing (3) is close to one side of an opening of the C-shaped groove of the track (1).

5. The silica sol shell flash drying apparatus of claim 4, wherein: track (1) includes two, and the annular setting is at the both ends of crossbeam (2), be equipped with a plurality of crossbeam (2) on track (1), form annular wraparound after chain (5) the way of homonymy arranges in proper order driven sprocket (4) on crossbeam (2) in proper order, still include driving motor (7), be equipped with driving sprocket (8) on driving motor (7), driving sprocket (8) can drive chain (5) and remove.

6. The silica sol shell flash drying apparatus of claim 5, wherein: a hang mechanism for hanging casing includes couple (6), couple (6) suit is on crossbeam (2), be clearance fit between couple (6) and crossbeam (2).

7. The silica sol shell flash drying apparatus of claim 1, wherein: the vacuum mechanism capable of carrying out vacuum treatment on the drying bin (11) comprises a vacuum generator (13), and the vacuum generator (13) is communicated with the inside of the drying bin (11) through a pipeline.

8. The silica sol shell flash drying apparatus of claim 1, wherein: the heating mechanism capable of heating the drying bin (11) comprises an electromagnetic heater (14) arranged in the drying bin (11), and the electromagnetic heater (14) is uniformly arranged in the drying bin (11).

9. The silica sol type shell flash drying apparatus as set forth in claim 1, wherein: the mechanism of taking a breath that can take a breath includes air-blower (15), air-blower (15) are through pipeline and dry storehouse (11) inside UNICOM, be equipped with control valve (16) on the pipeline between air-blower (15) and dry storehouse (11).

10. The silica sol shell flash drying apparatus of claim 1, wherein: the inspection mechanism capable of inspecting the temperature and humidity in the drying bin (11) comprises a temperature sensor (17) and a humidity sensor (18) which are arranged in the drying bin (11).