CN115197665A - Urea-formaldehyde resin adhesive for fiberboard production, preparation process and preparation device thereof - Google Patents
Urea-formaldehyde resin adhesive for fiberboard production, preparation process and preparation device thereof Download PDFInfo
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- CN115197665A CN115197665A CN202210892412.5A CN202210892412A CN115197665A CN 115197665 A CN115197665 A CN 115197665A CN 202210892412 A CN202210892412 A CN 202210892412A CN 115197665 A CN115197665 A CN 115197665A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
- C09J161/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C09J161/30—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic and acyclic or carbocyclic compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
- B01D33/11—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for outward flow filtration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/35—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition
- B01D33/41—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition in series connection
- B01D33/42—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition in series connection concentrically or coaxially
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/28—Moving reactors, e.g. rotary drums
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
- C08G12/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
- C08G12/34—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds and acyclic or carbocyclic compounds
- C08G12/36—Ureas; Thioureas
- C08G12/38—Ureas; Thioureas and melamines
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
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Abstract
The invention relates to the technical field of fiberboard production, in particular to a preparation device of urea-formaldehyde resin adhesive for fiberboard production, which comprises a reaction kettle and a discharge device, wherein the discharge device is arranged at an outlet of the reaction kettle, and is used for removing bubbles from a sizing material when the sizing material is discharged from the reaction kettle.
Description
Technical Field
The invention relates to the technical field of fiberboard production, in particular to a urea-formaldehyde resin adhesive for fiberboard production, a preparation process and a preparation device thereof.
Background
In the fiber board production industry, particularly plywood, the viscosity, solid content, fluidity and cleanliness of the glue can affect the product quality, so that the stability of the glue is very important. However, in glue preparation before production, new glue addition during production and old glue backflow use, in order to maintain the stability of the product, dispersing and stirring equipment is used for mixing uniformly. However, the dispersing and stirring equipment can throw air into the glue, and the air in the glue expands when heated to generate bubbles, so that the appearance of the product is influenced slightly, the functionality of the product is reduced greatly, and the product can lose effectiveness seriously. In order to solve the problem of air bubbles in the industry, the glue supply barrel groove can be pressurized to expel air or a surfactant can be added. However, the pressurizing mode needs to additionally purchase a vacuum barrel groove, so that the cost is increased; the addition of the auxiliary agent can cause the function variation of the product and influence the use.
Disclosure of Invention
The invention aims to solve the defect that bubbles appear in rubber materials in the prior art, and provides a urea-formaldehyde resin adhesive for producing fiberboards, a preparation process and a preparation device thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
a urea-formaldehyde resin adhesive for producing fiber boards comprises the following components: 1500-1650 parts of formaldehyde solution with the concentration of 37%, 9250-10300 parts of urea, 1500 parts of melamine solution and 1000 parts of polyacrylic resin.
A preparation process of urea-formaldehyde resin adhesive for producing fiber boards comprises the following steps:
s1: adding the formaldehyde solution into a reaction kettle, adding clear water to adjust the pH value to 5.6-5.8, and stirring;
s2: adding into a reaction kettle: 1100 parts of melamine and 4600-5000 parts of urea, heating to 70 ℃, preserving heat, adjusting the pH value to be not less than 6.7 after the melamine is completely dissolved, and preserving heat for 20min;
s3: adding 1850-2000 parts of urea into a reaction kettle, heating, maintaining the temperature at 90 ℃, adjusting the pH value to 6.2-6.4, reacting until the viscosity reaches 16-17sec, and detecting the viscosity at 30 ℃;
s4: cooling to 80 ℃, and adding into a reaction kettle: polyacrylic resin, 400 parts of melamine and 1900-2300 parts of urea, adjusting the pH value to 6.6-68, reacting until the viscosity reaches 19-20sec, and detecting the viscosity at 30 ℃;
s5: adjusting the temperature to 7.5-8.0, cooling, adding 1000 parts of urea, cooling to 40 ℃, adding alkali to adjust the pH value to 8.0-8.5, and discharging and taking out.
The utility model provides a preparation facilities of urea-formaldehyde resin glue for fiberboard production, includes reation kettle and discharging device, discharging device installs on reation kettle's the export, follows at the sizing material when reation kettle discharges, discharging device removes the bubble to the sizing material.
Further, the discharging device comprises: a first base;
a feeding bin is fixedly connected to the first base, a feeding pipe is arranged on the feeding bin to accommodate rubber materials to enter the feeding bin, and an annular first mounting plate is fixedly connected to the feeding bin;
the first mounting plate is concentrically provided with a first ring gear, a second ring gear and a third ring gear, the radiuses of the first ring gear, the second ring gear and the third ring gear are sequentially increased, the first ring gear is fixedly connected to the first mounting plate, the second ring gear and the third ring gear are both rotatably mounted on the first mounting plate, a ring piece is rotatably mounted on the first mounting plate between the first ring gear and the second ring gear, a plurality of planet gears are rotatably mounted on the ring piece, the planet gears are meshed with an outer ring of the first ring gear and an inner ring of the second ring gear, a transmission gear is rotatably mounted on the first mounting plate, and the transmission gear is meshed with an outer ring of the second ring gear and an inner ring of the third ring gear;
further comprising: the feeding device comprises a first filter screen, a second filter screen and a horn-shaped shell, wherein the first filter screen is rotatably matched in the second filter screen, a planetary gear is rotatably arranged on the first filter screen, the second filter screen is fixedly connected on a second ring gear, the small end of the shell is fixedly connected on a third ring gear, a discharging pipe is fixedly connected on the shell, a pipe fitting is fixedly connected on a feeding bin, a sealing element is fixedly connected on the pipe fitting, and the first filter screen and the second filter screen are rotatably arranged on the sealing element;
the bottom of the feeding bin is fixedly connected with a motor, the output end of the motor is fixedly connected with a first friction wheel, and the first friction wheel is abutted against the outer ring of the third ring gear.
Furthermore, the pipe fitting positioned in the first filter screen is provided with an exhaust hole.
Furthermore, a circulating feeding device is arranged on the sealing element so as to feed the rubber material with unqualified quality into the first filter screen again.
Further, the circulation loading attachment includes: baffle and second mounting panel, the baffle rigid coupling is in on the sealing member, the rotatable cooperation of baffle is in the discharge tube, the baffle bottom is equipped with the discharge gate, be equipped with the company pipe on the baffle, the rotatable installation of second mounting panel is in on the pipe fitting, the rotatable installation of discharge tube is in on the second mounting panel, equidistant a plurality of spouts of having seted up on the second mounting panel, one side rigid coupling that the spout is close to the pipe fitting has the measurement spring, slidable cooperation magazine in the spout, intercommunication relief pipe on the magazine, the rigid coupling has the outer lane spacing ring on the second mounting panel, the rotatable inner circle spacing ring of installing on the second mounting panel, the inner circle spacing ring sets up with the outer lane spacing ring is concentric, the stroke groove has been seted up at inner circle spacing ring top, the cooperation of relief pipe slidable is in the clearance between inner lane spacing ring and outer lane spacing ring, the rigid coupling has the apron on the pipe fitting, the rotatable installation of inner circle spacing ring the apron, the rotatable installation of outer lane spacing ring is in on the apron, the discharge gate has been seted up on the apron, the discharge gate with the stroke groove intercommunication.
Furthermore, an L-shaped flow channel is formed in the second mounting plate, a piston is slidably matched with one end of the flow channel, a plunger is slidably matched with the other end of the flow channel, a mounting groove is further formed in the second mounting plate, a ratchet bar is slidably matched with the mounting groove in the mounting groove and fixedly connected to the plunger, a mounting block is slidably matched with the mounting groove in the mounting groove, a pawl is fixedly connected to the mounting block and matched with the ratchet bar, a connecting rod is fixedly connected to the mounting block, and the connecting rod is fixedly connected to the material box.
The urea-formaldehyde resin adhesive for producing the fiber board, the preparation process and the preparation device thereof have the beneficial effects that: the invention carries out primary filtration on large bubbles, particles and other impurities in the sizing material through the first filter screen, then crushes the sizing material by utilizing shearing force generated when the first filter screen and the second filter screen rotate relatively, discharges small bubbles in the sizing material, and thins the sizing material on the inner wall of the shell by utilizing centrifugal force so as to eliminate gas in the sizing material.
Drawings
Fig. 1 is a schematic structural diagram of a preparation device of urea-formaldehyde resin glue for fiberboard production according to the present invention.
Fig. 2 is an enlarged view of the invention at D in fig. 1.
FIG. 3 is a top view of a device for preparing urea-formaldehyde resin glue for fiberboard production according to the present invention.
FIG. 4 isbase:Sub>A sectional view taken along the line A-A in FIG. 3 of an apparatus for preparingbase:Sub>A urea-formaldehyde resin adhesive for fiberboard production according to the present invention.
Fig. 5 is an enlarged view of a portion a in fig. 4 of a device for preparing a urea-formaldehyde resin adhesive for fiberboard production according to the present invention.
Fig. 6 is a first structural diagram of the first mounting plate of the present invention.
Fig. 7 is a second structural diagram of the first mounting plate of the present invention.
Fig. 8 is a front view of fig. 6.
Fig. 9 is a schematic structural view of the first filter screen and the second filter screen of the present invention.
Fig. 10 is a schematic structural diagram of a first filter screen according to the present invention.
Fig. 11 is a schematic view of a second screen structure according to the present invention.
Fig. 12 is a schematic structural diagram of the housing of the present invention.
Fig. 13 is a schematic view of an installation structure of the first filter screen and the second filter screen of the present invention.
FIG. 14 is a schematic illustration of the installation of the tapping pipe according to the invention.
Fig. 15 is a schematic structural view of the tube of the present invention.
Fig. 16 is a schematic view of the structure of the sealing member of the present invention.
Fig. 17 is a top view of the seal of the present invention.
Fig. 18 is a sectional view taken along line B-B of fig. 17.
Fig. 19 is a schematic view of the installation structure of the sealing member of the present invention.
Fig. 20 is a schematic view of the front side of the second mounting plate of the present invention.
Fig. 21 is a schematic view of the mounting structure of the cartridge of the present invention.
Fig. 22 is a schematic view of the structure of the rear side of the second mounting plate of the present invention.
Fig. 23 is a schematic view of a connection structure of the outer ring retainer and the second mounting plate according to the present invention.
Fig. 24 is a schematic view of an installation structure of the outer ring limit ring and the inner ring limit ring of the present invention.
Fig. 25 is an enlarged view at B of fig. 24 of the present invention.
Fig. 26 is a schematic view of a connection structure of the inner ring retainer ring and the second mounting plate according to the present invention.
FIG. 27 is a rear view of the second mounting plate of the present invention.
Fig. 28 is an enlarged view of fig. 27 at C of the present invention.
FIG. 29 is a schematic representation of a station for the baffle of the present invention.
FIG. 30 is a schematic representation of a station for the second mounting plate of the present invention.
FIG. 31 is a schematic representation of a station for an inner race stop collar of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1
A urea-formaldehyde resin adhesive for producing fiber boards comprises the following components: 1500-1650 parts of formaldehyde solution with the concentration of 37%, 9250-10300 parts of urea, 1500 parts of melamine solution and 1000 parts of polyacrylic resin.
The preparation process of the urea-formaldehyde resin adhesive for producing the fiberboard comprises the following steps:
s1: adding the formaldehyde solution into a reaction kettle, adding clear water to adjust the pH value to 5.6-5.8, and stirring;
s2: adding into a reaction kettle: 1100 parts of melamine and 4600-5000 parts of urea, heating to 70 ℃, preserving heat, adjusting the pH value to be not less than 6.7 after the melamine is completely dissolved, and preserving heat for 20min;
s3: adding 1850-2000 parts of urea into a reaction kettle, heating, maintaining the temperature at 90 ℃, adjusting the pH value to 6.2-6.4, reacting until the viscosity reaches 16-17sec, and detecting the viscosity at 30 ℃;
s4: cooling to 80 ℃, and adding into a reaction kettle: polyacrylic resin, 400 parts of melamine and 1900-2300 parts of urea, adjusting the pH value to 6.6-68, reacting until the viscosity reaches 19-20sec, and detecting the viscosity at 30 ℃;
s5: adjusting the temperature to 7.5-8.0, cooling, adding 1000 parts of urea, cooling to 40 ℃, adding alkali to adjust the pH value to 8.0-8.5, and discharging and taking out.
Example 2
Referring to fig. 1-13, a device for preparing urea-formaldehyde resin adhesive for fiberboard production comprises a reaction kettle and a discharging device, wherein the discharging device is installed at an outlet of the reaction kettle, and when the adhesive material is discharged from the reaction kettle, the discharging device removes bubbles from the adhesive material. The discharging device comprises: a first base 1;
the rigid coupling has feeding storehouse 2 on the first base 1, is equipped with inlet pipe 3 on the feeding storehouse 2 in order to hold the sizing material entering feeding storehouse 2, and the rigid coupling has annular first mounting panel 4 on the feeding storehouse 2, and the rigid coupling has motor 16 bottom the feeding storehouse 2, and the rigid coupling has first friction pulley 17 on the output of motor 16.
The first mounting plate 4 is concentrically provided with a first ring gear 5, a second ring gear 6 and a third ring gear 7, the radiuses of the first ring gear 5, the second ring gear 6 and the third ring gear 7 are sequentially increased, the first ring gear 5 is fixedly connected to the first mounting plate 4, the second ring gear 6 and the third ring gear 7 are rotatably mounted on the first mounting plate 4, a ring piece 9 is rotatably mounted on the first mounting plate 4 between the first ring gear 5 and the second ring gear 6, a plurality of planet gears 10 are rotatably mounted on the ring piece 9, the planet gears 10 are meshed with an outer ring of the first ring gear 5 and an inner ring of the second ring gear 6, a transmission gear 8 is rotatably mounted on the first mounting plate 4, the transmission gear 8 is meshed with an outer ring of the second ring gear 6 and an inner ring of the third ring gear 7, and a first friction wheel 17 abuts against an outer ring of the third ring gear 7;
the motor 16 is started, the motor 16 drives the third ring gear 7 to rotate through the first friction wheel 17, the third ring gear 7 rotates to drive the transmission gear 8 to rotate, the transmission gear 8 rotates to drive the second ring gear 6 to rotate, the second ring gear 6 rotates to drive the planet gear 10 to rotate, and as the planet gear 10 is meshed with the first ring gear 5 and the first ring gear 5 is in a fixed state, the planet gear 10 can simultaneously revolve and rotate.
Further comprising: the device comprises a first filter screen 11, a second filter screen 12 and a horn-shaped shell 13, wherein the first filter screen 11 is rotatably matched in the second filter screen 12, a planetary gear 10 is rotatably arranged on the first filter screen 11, the second filter screen 12 is fixedly connected on a second ring gear 6, the small end of the shell 13 is fixedly connected on a third ring gear 7, a discharge pipe 14 is fixedly connected on the shell 13, a pipe piece 15 is fixedly connected on a feeding bin 2, a sealing piece 19 is fixedly connected on the pipe piece 15, an exhaust hole is formed in the pipe piece 15 positioned in the first filter screen 11, and the first filter screen 11 and the second filter screen 12 are rotatably arranged on the sealing piece 19;
the planetary gear 10 will drive the first filter 11 to rotate when revolving, the second ring gear 6 will drive the second filter 12 to rotate when rotating, and the third ring gear 7 will drive the housing 13 to rotate when rotating.
When the sizing material goes out the pot from reation kettle, the sizing material gets into in the feeding storehouse 2 through inlet pipe 3 in the reation kettle from, the sizing material that collects can get into first filter screen 11 under the action of gravity in the feeding storehouse 2, because first filter screen 11 is in the rotation state, the sizing material in the first filter screen 11 also can rotate along with first filter screen 11, under the effect of centrifugal force, the sizing material can carry out primary filtration through first filter screen 11, primary filtration filters particulate matter and the big bubble in the sizing material, big bubble after the filtration can be assembled to 15 departments of pipe fitting, the little bubble then can be through first filter screen 11.
The sizing material after the primary filtration of first filter screen 11 can get into second filter screen 12 and carry out the secondary filtration, because first filter screen 11 and second filter screen 12 have the differential under the rotation state, because of first filter screen 11 and second filter screen 12 have relative rotation, because of the appearance of first filter screen 11 and the inside shape phase-match of second filter screen 12 again, in the in-process that the sizing material got into second filter screen 12 from first filter screen 11, the sizing material can receive the shearing force, under the effect of shearing force, the sizing material can be smashed, the small bubble in the sizing material also can be broken, the small bubble after the breakage receives centrifugal action and can be assembled to pipe fitting 15, the sizing material gets into inside casing 13 after the secondary filtration of second filter screen 12.
The sizing material that gets into casing 13 inside also can rotate along with casing 13's rotation, because casing 13 is loudspeaker form, its radius increases gradually, and the big local rotational speed of radius is faster, the sizing material rotational speed that gets into casing 13 inside also can increase gradually, under the condition that the sizing material rotational speed increases, the sizing material that adheres to on the casing 13 inner wall receives centrifugal action, thickness also can spread out thin thereupon, remaining microbubble in the sizing material is spread out thin the back at the sizing material, the constraint power that receives also can reduce, under the effect of centrifugal force, the microbubble is changeed and is overflowed from the sizing material. The gas in the bubble will enter the tube 15 through the vent hole and be discharged.
Example 3
Further, as shown in fig. 14-26, the sealing element 19 is provided with a circular feeding device to feed the glue of substandard quality back into the first sieve 11.
Circulation loading attachment includes: the material discharging pipe comprises a baffle 20 and a second mounting plate 23, the baffle 20 is fixedly connected to a sealing element 19, the baffle 20 is rotatably matched in a material discharging pipe 19, a material discharging port 22 is formed in the bottom end of the baffle 20, a connecting pipe 21 is arranged on the baffle 20, the second mounting plate 23 is rotatably installed on a pipe fitting 15, the material discharging pipe 19 is rotatably installed on the second mounting plate 23, a plurality of sliding grooves 24 are formed in the second mounting plate 23 at equal intervals, a measuring spring 25 is fixedly connected to one side, close to the pipe fitting 15, of each sliding groove 24, a matched material box 26 capable of sliding in each sliding groove 24 is formed in each material box 26, a material discharging pipe 29 is communicated with each material discharging pipe 26, an outer ring limiting ring 27 is fixedly connected to each second mounting plate 23, an inner ring limiting ring 28 is rotatably installed on each second mounting plate 23, the inner ring limiting ring 28 and the outer ring limiting ring 27 are concentrically arranged, a stroke groove 30 is formed in the top of the inner ring limiting ring 28, the material discharging pipe 29 is slidably matched in a gap between the inner ring limiting ring 28 and the outer ring 27, a cover plate 18 is fixedly connected to the pipe 15, the inner ring 28 is rotatably installed on the pipe fitting 18, the rotatable cover plate 18, the inner ring 28 is rotatably installed on the rotatable cover plate 18, a material discharging port 38 is formed in the cover plate 18, and the stroke groove 30 is formed in communication.
As shown in fig. 2, a support rod 43 is fixedly connected to the cover plate 18, a rotating shaft 40 is rotatably mounted on the support rod 43, a second friction wheel 41 is fixedly connected to one end of the rotating shaft 40, an incomplete friction wheel 42 is fixedly connected to the other end of the rotating shaft 42, the second friction wheel 41 abuts against the discharge pipe 14, the second friction wheel 41 is driven to rotate when the discharge pipe 14 rotates, the rotating shaft 40 is driven to rotate by the rotation of the second friction wheel 41, the incomplete friction wheel 42 is driven to rotate by the rotation of the rotating shaft 40, the incomplete friction wheel 42 abuts against the second mounting plate 23, and the second mounting plate 23 is driven to rotate during the rotation of the incomplete friction wheel 42.
During the rotation of the second mounting plate 23, the material box 26 is periodically communicated with the material outlet 22, the rubber material after being defoamed is gradually collected in the material outlet pipe 14, and the rubber material in the material outlet pipe 14 is filled in the material box 26 through the material outlet 22.
As shown in fig. 29-31, after the cartridge 26 is filled with gum material, it rotates with the second mounting plate 23 to pass through the first station, the second station, the third station, and the fourth station in sequence: 1. the magazine 26 communicates with the outlet 22 at the very bottom of the first station for collecting the gum material. 2. Magazine 26 rotates from the first station to the second station: the opening on the front side of the material box 26 is covered by the baffle 20, and the discharge pipe 29 on the rear side of the material box 26 is covered by the cover plate 18, so that the rubber in the material box 26 is prevented from flowing out. 3. The magazine 26 moves to the second station: at this time, magazine 26 is at the highest point, discharge pipe 29 is located in stroke groove 30, and magazine 26 has a degree of freedom in the vertical direction.
Because of the constant volume of the cartridge 26, the mass of gum material in the cartridge 26 is only related to the density of the gum material, and if the bubbles in the gum material increase, the density of the gum material decreases, and the mass of gum material in the cartridge 26 decreases; conversely, as the bubbles in the gum decrease, the density of the gum increases and the mass of gum in the cartridge 26 increases.
The magnitude of the spring force of the measuring spring 25 on the magazine 26 is: the material box 26 is filled with the standard-reaching colloid;
from the above, it can be seen that: if the bubbles of the rubber material in the material box 26 are less than the gas content in the standard-reaching colloid, the material box 26 compresses the measuring spring 25, the discharge pipe 29 slides in the stroke groove 30 and is communicated with the discharge port 38, and the colloid in the material box 26 is discharged;
if the bubbles of gum material in cartridge 26 are greater than the gas content of the standardized gel interior, cartridge 26 cannot compress measuring spring 25, i.e. the gum material in cartridge 26 cannot be discharged. 4. The magazine 26 moves from the second station to the third station: when the material box 26 moves to the third position, the front side opening of the material box 26 is communicated with the connecting pipe 21, and if the rubber material exists in the box body 21, the rubber material can reenter the first filter screen 11 through the connecting pipe 21 under the action of gravity to remove bubbles again. 5. The magazine 26 idles through the fourth station. 6. The magazine 26 reenters the first station.
Example 4
As shown in fig. 27-28, based on the above explanation, after the material cartridge 26 moves downward, the rubber material inside the material cartridge 26 will be discharged from the discharge opening 38, and after the rubber material is discharged, the pressure of the material cartridge 26 on the measuring spring 25 will be reduced, and the pressure of the measuring spring 25 will be greater than the pressure exerted by the material cartridge 26, so as to prevent the material cartridge 26 from moving upward due to the elasticity of the elastic material, and the discharge pipe 29 cannot be communicated with the discharge opening 38, the following structure is provided in this embodiment: the second mounting plate 23 is provided with an L-shaped flow channel 31, a piston 32 is slidably matched with one end inside the flow channel 31, a plunger 33 is slidably matched with the other end of the flow channel 31, the second mounting plate 23 is further provided with a mounting groove 30, a ratchet bar 34 is slidably matched with the mounting groove 30, the ratchet bar 34 is fixedly connected to the plunger 33, a mounting block 36 is slidably matched with the mounting groove 30, a pawl 37 is fixedly connected to the mounting block 36, the pawl 37 is matched with the ratchet bar 34, a connecting rod 35 is fixedly connected to the mounting block 36, and the connecting rod 35 is fixedly connected with the material box 26.
As shown in fig. 30, the ratchet bar 34 is initially separated from the pawl 37, when the magazine 26 is in the second position, the piston 32 moves downward in the flow channel 31 under the action of gravity, the pressure of the flow channel 31 increases, the plunger 33 moves downward in the mounting groove 30 under the action of the pressure, the plunger 33 moves to drive the ratchet bar 34 to move toward the pawl 37 until the ratchet bar 34 is matched with the pawl 37, and after the ratchet bar 34 is matched with the pawl 37, the magazine 26 only has the freedom of moving downward to prevent the magazine 26 from moving upward under the action of the spring force. During the movement of magazine 26 from the fourth station to the first station, piston 32 and plunger 33 will be reset.
The working principle is as follows: the motor 16 is started, the motor 16 drives the third ring gear 7 to rotate through the first friction wheel 17, the third ring gear 7 rotates to drive the transmission gear 8 to rotate, the transmission gear 8 rotates to drive the second ring gear 6 to rotate, the second ring gear 6 rotates to drive the planet gear 10 to rotate, and as the planet gear 10 is meshed with the first ring gear 5 and the first ring gear 5 is in a fixed state, the planet gear 10 can simultaneously revolve and rotate.
The planetary gear 10 will drive the first filter 11 to rotate when revolving, the second ring gear 6 will drive the second filter 12 to rotate when rotating, and the third ring gear 7 will drive the housing 13 to rotate when rotating.
When the sizing material goes out the pot from reation kettle, the sizing material gets into in the feeding storehouse 2 through inlet pipe 3 in the reation kettle from, the sizing material that collects in the feeding storehouse 2 can get into first filter screen 11 under the action of gravity in, because first filter screen 11 is in the rotation state, the sizing material in the first filter screen 11 also can rotate along with first filter screen 11, under the effect of centrifugal force, the sizing material can carry out primary filtration through first filter screen 11, primary filtration filters particulate matter and the big bubble in the sizing material, big bubble after the filtration can be assembled to 15 departments of pipe fitting, the little bubble then can be through first filter screen 11.
The sizing material after the primary filtration of first filter screen 11 can get into second filter screen 12 and carry out the secondary filtration, because first filter screen 11 and second filter screen 12 have the differential under the rotation state, because of first filter screen 11 and second filter screen 12 have relative rotation, because of the appearance of first filter screen 11 and the inside shape phase-match of second filter screen 12, at the in-process that the sizing material got into second filter screen 12 from first filter screen 11, the sizing material can receive the shearing force, under the effect of shearing force, the sizing material can be smashed, the small bubble in the sizing material also can be broken, the small bubble after the breakage receives centrifugal action and can assemble to pipe fitting 15 department, the sizing material gets into inside casing 13 after the secondary filtration of second filter screen 12.
The sizing material that gets into casing 13 inside also can rotate along with casing 13's rotation, because casing 13 is loudspeaker form, its radius increases gradually, and the big local rotational speed of radius is faster, the sizing material rotational speed that gets into casing 13 inside also can increase gradually, under the condition that the sizing material rotational speed increases, the sizing material that adheres to on the casing 13 inner wall receives centrifugal action, thickness also can spread out thin thereupon, remaining microbubble in the sizing material is spread out thin the back at the sizing material, the constraint power that receives also can reduce, under the effect of centrifugal force, the microbubble is changeed and is overflowed from the sizing material. The gas in the bubble will enter the tube 15 through the vent hole and be discharged.
As shown in fig. 2, a support rod 43 is fixedly connected to the cover plate 18, a rotating shaft 40 is rotatably mounted on the support rod 43, a second friction wheel 41 is fixedly connected to one end of the rotating shaft 40, an incomplete friction wheel 42 is fixedly connected to the other end of the rotating shaft 42, the second friction wheel 41 abuts against the discharge pipe 14, the second friction wheel 41 is driven to rotate when the discharge pipe 14 rotates, the rotating shaft 40 is driven to rotate by the rotation of the second friction wheel 41, the incomplete friction wheel 42 is driven to rotate by the rotation of the rotating shaft 40, the incomplete friction wheel 42 abuts against the second mounting plate 23, and the second mounting plate 23 is driven to rotate during the rotation of the incomplete friction wheel 42. During the rotation of the second mounting plate 23, the material box 26 is periodically communicated with the discharge port 22, the rubber material after being deaerated gradually collects in the discharge pipe 14, and the rubber material in the discharge pipe 14 is filled in the material box 26 through the discharge port 22. As shown in fig. 29-31, after the cartridge 26 is filled with gum material, it rotates with the second mounting plate 23 to pass through the first station, the second station, the third station, and the fourth station in sequence:
1. the material box 26 is communicated with the material outlet 22 at the bottommost part of the first station, and is used for collecting the rubber material. 2. Magazine 26 rotates from the first station to the second station: the opening on the front side of the material box 26 is covered by the baffle 20, and the discharge pipe 29 on the rear side of the material box 26 is covered by the cover plate 18, so that the rubber in the material box 26 is prevented from flowing out. 3. The magazine 26 moves to the second station: at this time, magazine 26 is at the highest point, discharge pipe 29 is located in stroke groove 30, and magazine 26 has a degree of freedom in the vertical direction.
Because of the constant volume of cartridge 26, the mass of gum material in cartridge 26 is only related to the density of the gum material, which decreases if the bubbles in the gum material increase; conversely, as the bubbles in the gum material decrease, the density of the gum material increases and the mass of gum material in the cartridge 26 increases. The elastic force of the measuring spring 25 to the material box 26 is as follows: the material box 26 is filled with standard colloid with gravity;
from the above, it can be seen that: if the bubbles of the rubber material in the material box 26 are less than the gas content in the standard-reaching colloid, the material box 26 compresses the measuring spring 25, the discharge pipe 29 slides in the stroke groove 30 and is communicated with the discharge port 38, and the colloid in the material box 26 is discharged;
if the bubbles of gum material in the cartridge 26 are greater than the gas content inside the standardized gum, the cartridge 26 cannot compress the measuring spring 25, i.e. the gum material in the cartridge 26 cannot be discharged.
4. The magazine 26 moves from the second station to the third station: when the material box 26 moves to the third position, the front side opening of the material box 26 is communicated with the connecting pipe 21, and if the rubber material exists in the box body 21, the rubber material can reenter the first filter screen 11 through the connecting pipe 21 under the action of gravity to remove bubbles again. 5. The magazine 26 idles through the fourth station. 6. The magazine 26 reenters the first station.
As shown in fig. 30, the ratchet bar 34 is separated from the pawl 37 in the initial state, when the magazine 26 is in the second position, the piston 32 moves downward in the flow passage 31 under the action of gravity, the pressure of the flow passage 31 increases, the plunger 33 moves downward in the mounting groove 30 under the action of the pressure, the plunger 33 moves to drive the ratchet bar 34 to move toward the pawl 37 until the ratchet bar 34 is matched with the pawl 37, and after the ratchet bar 34 is matched with the pawl 37, the magazine 26 only has the freedom of moving downward to prevent the magazine 26 from moving upward under the action of the spring force. During the movement of magazine 26 from the fourth station to the first station, piston 32 and plunger 33 will be reset.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The urea-formaldehyde resin adhesive for producing the fiber board is characterized by comprising the following components: 1500-1650 parts of formaldehyde solution with the concentration of 37%, 9250-10300 parts of urea, 1500 parts of melamine solution and 1000 parts of polyacrylic resin.
2. The preparation process of the urea-formaldehyde resin adhesive for the production of the fiber board according to claim 1, which is characterized by comprising the following steps:
s1: adding the formaldehyde solution into a reaction kettle, adding clear water to adjust the pH value to 5.6-5.8, and stirring;
s2: adding into a reaction kettle: 1100 parts of melamine and 4600-5000 parts of urea, heating to 70 ℃, preserving heat, adjusting the pH value to be not less than 6.7 after the melamine is completely dissolved, and preserving heat for 20min;
s3: adding 1850-2000 parts of urea into a reaction kettle, heating, maintaining the temperature at 90 ℃, adjusting the pH value to 6.2-6.4, reacting until the viscosity reaches 16-17sec, and detecting the viscosity at 30 ℃;
s4: cooling to 80 ℃, and adding into a reaction kettle: polyacrylic resin, 400 parts of melamine and 1900-2300 parts of urea, adjusting the pH value to 6.6-68, reacting until the viscosity reaches 19-20sec, and detecting the viscosity at 30 ℃;
s5: adjusting the temperature to 7.5-8.0, cooling, adding 1000 parts of urea, cooling to 40 ℃, adding alkali to adjust the pH value to 8.0-8.5, and discharging and taking out.
3. The utility model provides a preparation facilities of urea-formaldehyde resin glue for fiberboard production, its characterized in that, includes reation kettle and discharging device, discharging device installs on reation kettle's export, when the sizing material was followed reation kettle discharges, discharging device removed the bubble to the sizing material.
4. The apparatus for preparing the urea-formaldehyde resin adhesive for fiberboard production according to claim 3, wherein the discharging device comprises: a first base (1);
a feeding bin (2) is fixedly connected to the first base (1), a feeding pipe (3) is arranged on the feeding bin (2) to accommodate rubber materials to enter the feeding bin (2), and an annular first mounting plate (4) is fixedly connected to the feeding bin (2);
the first mounting plate (4) is concentrically provided with a first ring gear (5), a second ring gear (6) and a third ring gear (7), the radiuses of the first ring gear (5), the second ring gear (6) and the third ring gear (7) are sequentially increased, the first ring gear (5) is fixedly connected to the first mounting plate (4), the second ring gear (6) and the third ring gear (7) are rotatably mounted on the first mounting plate (4), a ring member (9) is rotatably mounted on the first mounting plate (4) between the first ring gear (5) and the second ring gear (6), a plurality of planet gears (10) are rotatably mounted on the ring member (9), the planet gears (10) are meshed with an outer ring of the first ring gear (5) and an inner ring of the second ring gear (6), a transmission gear (8) is rotatably mounted on the first mounting plate (4), and the transmission gear (8) is meshed with an outer ring of the second ring gear (6) and an inner ring of the third ring gear (7);
further comprising: a first filter screen (11), a second filter screen (12) and a horn-shaped shell (13), wherein the first filter screen (11) is rotatably matched in the second filter screen (12), the planetary gear (10) is rotatably installed on the first filter screen (11), the second filter screen (12) is fixedly connected on the second ring gear (6), the small end of the shell (13) is fixedly connected on the third ring gear (7), a discharge pipe (14) is fixedly connected on the shell (13), a pipe fitting (15) is fixedly connected on the feeding bin (2), a sealing element (19) is fixedly connected on the pipe fitting (15), and the first filter screen (11) and the second filter screen (12) are rotatably installed on the sealing element (19);
feeding storehouse (2) bottom rigid coupling has motor (16), the rigid coupling has first friction pulley (17) on the output of motor (16), first friction pulley (17) support and lean on third ring gear (7) outer lane.
5. The device for preparing the urea-formaldehyde resin adhesive for the fiberboard production according to claim 4, wherein the pipe member (15) positioned in the first filter screen (11) is provided with a vent hole.
6. The apparatus for preparing urea-formaldehyde resin adhesive for fiberboard production according to claim 5, wherein the sealing member (19) is provided with a circulating feeding device to feed the rubber material with substandard quality into the first screen (11) again.
7. The apparatus for preparing urea-formaldehyde resin adhesive for fiber board production according to claim 6, wherein the circulation feeding device comprises: baffle (20) and second mounting panel (23), baffle (20) rigid coupling is in on sealing member (19), the rotatable cooperation of baffle (20) is in discharging pipe (19), baffle (20) bottom is equipped with discharge gate (22), be equipped with even pipe (21) on baffle (20), rotatable the installing in second mounting panel (23) on pipe fitting (15), rotatable the installing in discharging pipe (19) on second mounting panel (23), equidistant a plurality of spout (24) of having seted up in second mounting panel (23), one side rigid coupling that spout (24) are close to pipe fitting (15) has measuring spring (25), slidable cooperation magazine (26) in spout (24), row pipe (29) are arranged in the intercommunication on magazine (26), the rigid coupling has outer lane spacing ring (27) on second mounting panel (23), rotatable the installing inner circle spacing ring (28) on second mounting panel (23), inner circle spacing ring (28) and spacing ring (27) concentric setting, stroke groove (30) have been seted up at inner circle spacing ring (28) top, row material cover plate (18) and slidable spacing ring (28) between the pipe fitting (15), the inner ring limiting ring (28) is rotatably arranged on the cover plate (18), the outer ring limiting ring (27) is rotatably arranged on the cover plate (18), a discharge hole (38) is formed in the cover plate (18), and the discharge hole (38) is communicated with the stroke groove (30).
8. The device for preparing the urea-formaldehyde resin adhesive for fiberboard production according to claim 7, wherein the second mounting plate (23) is provided with an L-shaped flow channel (31), one end of the inside of the flow channel (31) is slidably fitted with a piston (32), the other end of the inside of the flow channel is slidably fitted with a plunger (33), the second mounting plate (23) is further provided with a mounting groove (30), a ratchet bar (34) is slidably fitted in the mounting groove (30), the ratchet bar (34) is fixedly connected to the plunger (33), a mounting block (36) is slidably fitted in the mounting groove (30), the mounting block is fixedly connected to a pawl (37), the pawl (37) is matched with the ratchet bar (34), a connecting rod (35) is fixedly connected to the mounting block (36), and the connecting rod (35) is fixedly connected to the magazine (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210892412.5A CN115197665B (en) | 2022-07-27 | 2022-07-27 | Urea-formaldehyde resin adhesive for fiberboard production, preparation process and preparation device thereof |
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| CN202210892412.5A CN115197665B (en) | 2022-07-27 | 2022-07-27 | Urea-formaldehyde resin adhesive for fiberboard production, preparation process and preparation device thereof |
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| CN115197665B CN115197665B (en) | 2023-07-25 |
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| CN215428319U (en) * | 2021-05-08 | 2022-01-07 | 库贝化学（上海）有限公司 | Reation kettle is used in high temperature resistant glue production of moisture solidification |
| CN215692132U (en) * | 2021-06-09 | 2022-02-01 | 常州飞腾化工有限公司 | Environment-friendly flame-retardant modified unsaturated polyester resin filtering and subpackaging device |
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| JP3103952U (en) * | 2004-03-11 | 2004-08-26 | おかもとポンプ株式会社 | Submersible motor pump for deep well |
| JP2006027012A (en) * | 2004-07-14 | 2006-02-02 | Pioneer Electronic Corp | Defoaming method and defoaming apparatus therefor |
| CN103361014A (en) * | 2013-07-25 | 2013-10-23 | 南京市荣达树脂有限公司 | Preparation method of modified urea-formaldehyde resin |
| CN214808616U (en) * | 2021-01-15 | 2021-11-23 | 河北佩清科技有限公司 | Device convenient for discharging bubbles in production of wash-free guanidine disinfection gel |
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| CN115197665B (en) | 2023-07-25 |
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