CN203176369U - Discharge valve for high-viscosity polyurethane mixed materials - Google Patents
Discharge valve for high-viscosity polyurethane mixed materials Download PDFInfo
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- CN203176369U CN203176369U CN 201320042419 CN201320042419U CN203176369U CN 203176369 U CN203176369 U CN 203176369U CN 201320042419 CN201320042419 CN 201320042419 CN 201320042419 U CN201320042419 U CN 201320042419U CN 203176369 U CN203176369 U CN 203176369U
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- valve
- discharge port
- discharge
- valve body
- discharge valve
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Abstract
The utility model relates to a discharge valve for high-viscosity polyurethane mixed materials. The discharge valve comprises a valve body and a discharging pipe, wherein the valve body is provided with an inner cavity, the discharging pipe is in sealing connection with the lower end of the valve body, a feeding port is formed in the valve body, a discharge port is formed in the center of the discharging pipe, a valve element is arranged in the inner cavity of the valve body, and the valve element can move between a first position for opening the discharge port and a second position for closing the discharge port. According to the discharge valve, when the discharge valve is closed, through movement of the valve element from the opening position to the closing position, materials which are residual on the wall of the discharging pipe can be completely squeezed out, and accordingly no hanging material leaks. In addition, due to the fact that no negative suction cavity or negative suction passage is arranged inside the valve element, the discharge valve is especially suitable for being used in the process of discharging the high-viscosity polyurethane mixed materials which are sensitive to moisture. The discharging method with the discharge valve adopted can improve the discharging efficiency and quality of products, and reduce loss of materials and production cost.
Description
Technical field
The utility model relates to production of polyurethane, the discharge valve and the discharge method that are used for the high viscosity polyurethane combined material particularly used in the production of polyurethane process.
Background technique
Polyurethane belongs to the reactive polymer material, be that auxiliary agent can comprise chain agent, crosslinking agent, surface active agent, fire retardant, stabilizer, pigment and filler etc. by isocyanates and polyatomic alcohol polybasic alcohol polyaddition reaction and generating in the presence of catalyzer and other auxiliary agent.During commercial the manufacturing, liquid isocyanate generates polyurethane, the polyurethane formulations system that these two kinds of components are common indication with the mixture reaction that comprises polyatomic alcohol polybasic alcohol, catalyzer and other auxiliary agent.The mixture of polyatomic alcohol polybasic alcohol and other auxiliary agent is commonly called the A material, and isocyanates or isocyanate prepolymer are commonly called the material into B.For specific polyurethane system, system such as TPU for example, the viscosity of B material is very high.
In the polyurethane production process, in order to guarantee to pack quality, requiring can not have material to drip to edge in the packaging container outside and the bung after discharge valve or filling valve are closed, and just requires not water clock of filling machine.The leakage-proof measure that present liquid bottle filler adopts usually has following two kinds: a kind of is the negative leakage-proof method of inhaling, and a kind of is the groove leakage-proof method that connects material.The negative leakage-proof method of inhaling is all to be provided with elongated hole in the middle of filling valve spool and valve rod, and this hole communicates with taking out negative pressure equipment, and salvage stores is taken away.The groove leakage-proof method that connects material is that the groove that connects material is set under filling valve, and during can, the groove that connects material is return original position, and when filling valve was closed, the groove that connects material stretched out, and places the filling valve below, and the liquid of water clock is collected, and avoids it to pollute packaging container, and the liquid after the collection is concentrated discharging again.The negative leakage-proof method of inhaling all needs regular salvage stores cleaning with collection with the groove leakage-proof method that connects material, and has increased the operating time.In addition, the salvage stores of collecting often can not satisfy quality requirements, has caused the waste of material.
For example, formerly patent CN202219865U has described a kind of conceited suction leakage-proof formula filling valve, wherein forms negative cavity at valve core inside when filling valve is closed, to reach the negative drip-proof effect of inhaling.Yet owing to the viscosity of polyurethane combined material especially B material is very high, the reaction back is 5000cps in the time of 80 ℃ usually, much larger than high viscosity fluids such as edible oils, and this conceited discharge process of inhaling leakage-proof formula filling valve and not being suitable for polyurethane B material.This is because on the one hand, high viscosity B material can stop up vacuum lead, especially when ambient temperature is down to room temperature; On the other hand, the isocyanates in the polyurethane B material is to airborne moisture and sensitivity thereof, and meeting and its generation side reaction form dimer or tripolymer, freeze solidly in the pipeline.
The model utility content
The purpose of this utility model is to provide a kind of discharge valve that is applicable to the high viscosity polyurethane combined material, and it can improve efficient and the packing of product and the quality of discharging, and can reduce material loss and cost of production.
In order to address the above problem, the discharge valve that is used for the high viscosity polyurethane combined material that the utility model provides comprises the valve body with inner chamber and the feeding pipe that is tightly connected with valve body lower end, valve body is provided with material feeding mouth, the central authorities of feeding pipe are provided with discharge port, wherein, be provided with spool in the inner chamber of described valve body, described spool can and be closed between the second place of described discharge port mobile in the primary importance of opening described discharge port.
According to above-mentioned discharge valve of the present utility model, spool can move between open position and closed position, when discharge valve cuts out, extruded the material that remains on the blanking tube wall fully by the motion of spool from open position to closed position, thereby do not had the material water clock of wall built-up.In addition, do not inhale path in the negative chamber of inhaling of valve core inside design with negative according to discharge valve of the present utility model, thereby be specially adapted to the discharge process of high viscosity polyurethane combined material.
Preferably, it is conical that the top of described discharge port is, and described spool has the upper conical portion corresponding with the cone-shaped section of described discharge port, and when described spool was in the described second place, the upper conical portion of described spool cooperated with the cone-shaped section of described discharge port is airtight.
Preferably, the bottom of described discharge port is cylindrical, and described spool has the cylindrical lower portion corresponding with the cylindrical part of described discharge port, and when described spool was in the described second place, the cylindrical lower portion of described spool cooperated with the cylindrical part of described discharge port is airtight.
Preferably, be provided with cylinder in the upper end of described valve body, described spool is fixedlyed connected with the piston rod of described cylinder, with mobile between primary importance and the second place by means of moving up and down of described piston rod.
Preferably, described material feeding mouth is formed on the sidewall of described valve body.
This paper also discloses a kind of discharge method for the high viscosity polyurethane combined material, comprise: discharge valve is provided, described discharge valve comprises the valve body with inner chamber and the feeding pipe that is tightly connected with valve body lower end, valve body is provided with material feeding mouth, the central authorities of feeding pipe are provided with discharge port, upper end at valve body is provided with cylinder, is provided with the spool of fixedlying connected with the piston rod of cylinder in the inner chamber of valve body; At the delivery pipe of described material feeding mouth connection for delivery of the polyurethane combined material that in reactor, generates; Air pressure control by cylinder moves to the primary importance of opening described discharge port with described spool, the beginning discharge process; After discharging finished, the air pressure control by cylinder moved to the second place of closing described discharge port with described spool, remains in the material on the blanking tube wall and prevents the material water clock to extrude.
According to above-mentioned discharge method, the high viscosity polyurethane combined material that generates in reactor is that the B material is being transported to the material feeding mouth of discharge valve valve body and is transported to charging basket when discharge valve is in the primary importance of opening discharge port via delivery pipe immediately after the reaction, thereby has avoided the generation of other side reactions.In addition, when after discharging finishes, closing discharge valve, extrude the material that remains on the blanking tube wall fully by the motion of spool from open position to closed position, thereby do not had the material water clock of wall built-up.
Preferably, connect plural discharge valve for a reactor, to improve the efficient of discharging.
Description of drawings
Fig. 1 shows the schematic elevational view according to the utility model one embodiment's discharge valve.
Fig. 2 shows the perspective schematic view of discharge valve shown in Figure 1.
Fig. 3 shows the decomposition view of discharge valve illustrated in figures 1 and 2.
Embodiment
The discharge valve and the discharge method that are used for the high viscosity polyurethane combined material according to embodiment of the present utility model are described with reference to the accompanying drawings.In the following description, many details have been set forth in order to make the person of ordinary skill in the field more fully understand the utility model.But, be apparent that for the technician in the affiliated technical field realization of the present utility model can not have some in these details.In addition, should be understood that the specific embodiment that the utility model is not limited to introduce.On the contrary, can consider to implement the utility model with the combination in any of following feature and key element, and no matter whether they relate to different embodiments.Therefore, following aspect, feature, embodiment and advantage for illustrative purposes only usefulness and should not be counted as key element or the restriction of claim, unless clearly propose in the claims.
Fig. 1-3 shows the discharge valve that is used for high viscosity polyurethane combined material (that is B material base polyurethane prepolymer for use as) according to an exemplary embodiment of the utility model.Fig. 1 is that discharge valve is in the schematic representation when attitude is installed, and Fig. 2 shows the perspective view of discharge valve, and Fig. 3 shows the decomposition view of discharge valve.
Particularly from the decomposition view of Fig. 3 as can be seen, comprise feeding pipe 1, rifle head 2, a pair of clip packing ring 3, throttling sheet 4, cone 5, threeway 6, sealed valve body 7, one group of seal ring 8-9, sealing pressure head 10, the body of a gun 11, mounting blocks 12-14, upper connecting rod 15, lower connecting block 16, go up contiguous block 17 and cylinder 18 according to the discharge valve of present embodiment.The effect of each parts is as mentioned below.
The housing parts of feeding pipe 1 and threeway 6 a formation discharge valve.In a pair of clip packing ring 3 one is arranged between feeding pipe 1 and the threeway 6, to seal.Bottom center at feeding pipe 1 is provided with discharge port.The side mouth of threeway 6 forms material feeding mouth, and the polyurethane B that generates in reactor material is transported to this material feeding mouth via delivery pipe.As shown in Figure 1, under the installment state or working state of discharge valve, discharge port is arranged straight down, makes polyurethane B material to fall into the charging basket that is placed on feeding pipe 1 below via discharge port; Material feeding mouth then can horizontal arrangement.
Rifle head 2, throttling sheet 4 and cone 5 are arranged in the inner chamber by feeding pipe 1 and threeway 6 housing parts that form.Ejaculations of scattering of the conical surface of the polyurethane B material that enters discharge valve from the material feeding mouth of threeway 6 sidepiece by cone 5, the direction towards feeding pipe 1 flows then, and (will be described below) the discharge port discharge via feeding pipe 1 bottom under the control of rifle head 2.Throttling sheet 4 plays the effect of control mass flow.
Sealed valve body 7, one group of seal ring 8-9 and sealing pressure head 10 constitute black boies, and the sealing assembly can also be regulated the aperture size of discharge valve.Particularly, be formed with the screw section (not shown) on the internal surface of sealed valve body 7, this screw section can be screwed in seal ring 8,9 and sealing pressure head 10 on, come the aperture of modulating valve by the bonding length of screw section.Seal ring 8 is planes near the surface of sealed valve body 7, and seal ring 9 is concave surfaces near the surface of seal ring 8, so that sealing effect well to be provided.There is shown five seal rings 9, yet the quantity of seal ring 9 is not limited thereto.Sealing pressure head 10 is pressed on seal ring 8,9 on the sealed valve body 7.
The body of a gun 11 and mounting blocks 12,13,14 constitute assembly department, are used for discharge valve is installed to frame.The mounting structure that should be appreciated that discharge valve is not limited to shown in the figure.In a pair of clip packing ring 3 another is arranged between the body of a gun 11 and the threeway 6, to seal.
The top of the body of a gun 11 links to each other with cylinder 18.Barral of a gun is fixedlyed connected with the piston rod of cylinder 18 with last contiguous block 17 by upper connecting rod 15, lower connecting block 16.Cylinder 18 links to each other with not shown gas pressure source.By the control cylinder 18 internal pistons pressure of both sides up and down, piston rod can move up and down in cylinder 18, and drives barrals of a gun and cone 5 and rifle head 2 by last contiguous block 17, lower connecting block 16 and upper connecting rod 15 and move up and down together.
When the piston in the cylinder 18 moved to position, the top, rifle head 2 was in the primary importance of opening discharge port, as shown in Figure 1.Along with moving down of piston rod, rifle head 2 moves to the second place of closing discharge port gradually, and in this moving process, the outer circumferential face of rifle head 2 contacts with the internal face of feeding pipe 1, thereby extrudes the material of wall built-up and prevent the material water clock.
In the embodiment shown in Fig. 1-3, feeding pipe 1 comprises big footpath cylindrical part, tapered portion and path cylindrical part from top to bottom successively.Discharge port has respectively cone-shaped section and the cylindrical part corresponding with the inwall of the tapered portion of feeding pipe 1 and path cylindrical part.Rifle head 2 has the upper conical portion corresponding with the cone-shaped section of discharge port and the cylindrical lower portion corresponding with the cylindrical part of discharge port.When rifle head 2 was in the second place of closing discharge port fully, the cone-shaped section of its upper conical portion and discharge port closely cooperated, and the cylindrical part of its cylindrical lower portion and discharge port closely cooperates.
In the above-described embodiments, threeway 6 " valve body " that correspond essentially in the utility model, rifle head 2 corresponds essentially to " spool " in the utility model.
The discharge process of polyurethane combined material is described below.Aforesaid discharge valve is assembled and in position after, will be connected on the material feeding mouth of discharge valve for delivery of the delivery pipe (not shown) of the polyurethane combined material that in reactor, generates.The polyurethane combined material that generates in reactor is transported to the material feeding mouth of discharge valve immediately after reaction, and being higher than the air pressure of piston upside by the air pressure that makes cylinder 18 internal piston downsides rifle head 2 is moved under the situation of the primary importance of opening discharge port and be filled in the charging basket via the discharge port in the feeding pipe 1.After discharging finishes, for example after a charging basket has been filled, be higher than the air pressure of piston underside and rifle head 2 is moved to the second place of closing discharge port by the air pressure that makes cylinder 18 internal piston upsides, with cooperating to extrude and remain in the material on the blanking tube wall and prevent the material water clock between the internal face of the outer circumferential face by rifle head 2 and feeding pipe 1.For improving discharging efficient, a reactor can connect plural discharge valve.
Though the utility model discloses as above with preferred embodiment, the utility model is not to be defined in this.Various changes and modification that any those skilled in the art do in not breaking away from spirit and scope of the present utility model all should be included in the protection domain of the present utility model, and therefore protection domain of the present utility model should be as the criterion with claim institute restricted portion.
Claims (5)
1. discharge valve that is used for the high viscosity polyurethane combined material, comprise the valve body with inner chamber and the feeding pipe that is tightly connected with valve body lower end, valve body is provided with material feeding mouth, the central authorities of feeding pipe are provided with discharge port, it is characterized in that, be provided with spool in the inner chamber of described valve body, described spool can and be closed between the second place of described discharge port mobile in the primary importance of opening described discharge port.
2. discharge valve according to claim 1, it is characterized in that, it is conical that the top of described discharge port is, and described spool has the upper conical portion corresponding with the cone-shaped section of described discharge port, when described spool was in the described second place, the upper conical portion of described spool cooperated with the cone-shaped section of described discharge port is airtight.
3. discharge valve according to claim 2, it is characterized in that, the bottom of described discharge port is cylindrical, and described spool has the cylindrical lower portion corresponding with the cylindrical part of described discharge port, when described spool was in the described second place, the cylindrical lower portion of described spool cooperated with the cylindrical part of described discharge port is airtight.
4. discharge valve according to claim 1 is characterized in that, is provided with cylinder in the upper end of described valve body, and described spool is fixedlyed connected with the piston rod of described cylinder, with mobile between primary importance and the second place by means of moving up and down of described piston rod.
5. discharge valve according to claim 1 is characterized in that, described material feeding mouth is formed on the sidewall of described valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320042419 CN203176369U (en) | 2013-01-25 | 2013-01-25 | Discharge valve for high-viscosity polyurethane mixed materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320042419 CN203176369U (en) | 2013-01-25 | 2013-01-25 | Discharge valve for high-viscosity polyurethane mixed materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203176369U true CN203176369U (en) | 2013-09-04 |
Family
ID=49073068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320042419 Expired - Lifetime CN203176369U (en) | 2013-01-25 | 2013-01-25 | Discharge valve for high-viscosity polyurethane mixed materials |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203176369U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103964358A (en) * | 2013-01-25 | 2014-08-06 | 巴斯夫聚氨酯特种产品（中国）有限公司 | Material unloading valve for high viscosity polyurethane combination material, and material unloading method |
-
2013
- 2013-01-25 CN CN 201320042419 patent/CN203176369U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103964358A (en) * | 2013-01-25 | 2014-08-06 | 巴斯夫聚氨酯特种产品（中国）有限公司 | Material unloading valve for high viscosity polyurethane combination material, and material unloading method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130904 |