CN217491302U - Polyurethane spraying machine internal circulation pressure relief device - Google Patents
Polyurethane spraying machine internal circulation pressure relief device Download PDFInfo
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- CN217491302U CN217491302U CN202220404518.1U CN202220404518U CN217491302U CN 217491302 U CN217491302 U CN 217491302U CN 202220404518 U CN202220404518 U CN 202220404518U CN 217491302 U CN217491302 U CN 217491302U
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- relief device
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Abstract
The utility model relates to a polyurethane coating machine internal circulation pressure relief device, which comprises a charging basket, a plunger pump and a spray gun, wherein the charging basket is connected with the plunger pump through a blanking pipe, the plunger pump is connected with the spray gun through a conveying pipe, the conveying pipe is provided with a circulating pipe connected with the charging basket, a check valve is arranged between the circulating pipe and the plunger pump, and the circulating pipe is also provided with a pressure relief valve; when the spray gun is opened, the pressure relief valve cuts off the circulating pipe; when the spray gun is closed, the pressure relief valve is communicated with the circulating pipe. This polyurethane coating machine inner loop pressure relief device adds the circulating pipe through managing at original defeated material to the cooperation and the solenoid valve of spray gun linkage, when the spraying operation of suspending, raw materials pressure can transmit to the storage bucket and carry out the pressure release, guarantees that two spraying pipeline pressure are unanimous, has solved the influence that the bias voltage problem caused the spraying.
Description
Technical Field
The utility model relates to a polyurethane flush coater field, in particular to polyurethane flush coater inner loop pressure relief device.
Background
The working principle of the polyurethane spraying machine is as follows: the raw materials in the charging barrel are conveyed to the spray gun through the plunger pump for operation. When the polyurethane spraying machine stops feeding, the gun head generates pressure, the pressure can influence the subsequent feeding of sprayed materials, and therefore the spray gun is manually opened to release pressure in the conventional operation before the polyurethane spraying machine is used next time.
The pressure relief mode is relatively complicated to operate, if pressure relief is forgotten, bias voltage can be generated on two spray gun pipelines of the polyurethane spraying machine, and adverse effects are caused on spraying operation. As such, improvements in the spray gun tubing of polyurethane applicators are needed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: in order to overcome the defects of the prior art, the circulating pressure relief device in the polyurethane spraying machine is provided.
In order to achieve the above technical effect, the utility model discloses a technical scheme is: a circulating pressure relief device in a polyurethane spraying machine comprises a charging basket, a plunger pump and a spray gun, wherein the charging basket is connected with the plunger pump through a discharging pipe, the plunger pump is connected with the spray gun through a conveying pipe, a circulating pipe connected with the charging basket is arranged on the conveying pipe, a check valve is arranged between the circulating pipe and the plunger pump, and a pressure relief valve is further arranged on the circulating pipe;
when the spray gun is opened, the pressure relief valve cuts off the circulating pipe; when the spray gun is closed, the pressure relief valve is communicated with the circulating pipe.
Further, still be provided with temperature sensor and pressure sensor on the conveying pipeline, temperature sensor and pressure sensor are between check valve and spray gun.
Furthermore, a filter screen is arranged in the charging bucket, and one end, far away from the material conveying pipe, of the circulating pipe is located above the filter screen.
Further, the filter screen is upwards protruding from the edge gradually towards the center, and its edge still encloses the collecting vat with the laminating of storage bucket inner wall.
Furthermore, the filter screen and the collecting tank are integrally made of stainless steel materials.
Furthermore, a support ring is arranged below the filter screen, a positioning groove is formed in the upper end of the support ring, and the collecting groove is partially embedded into the positioning groove.
Further, a liquid level sensor is further arranged in the charging bucket, and the liquid level sensor is a duckbilled liquid level controller.
Furthermore, the charging bucket is also connected with a feeding pipe positioned above the filter screen, the feeding pipe is provided with an electromagnetic valve associated with the liquid level sensor, and when the liquid level sensor detects that the liquid level in the charging bucket is lower than a set value, the electromagnetic valve is opened.
Furthermore, an insulating layer is arranged on the outer surface of the charging bucket.
Furthermore, the heat-insulating layer is made of heat-insulating cotton
Compared with the prior art, the beneficial effects of the utility model are that: this polyurethane spraying machine inner loop pressure relief device adds the circulating pipe through managing at original defeated material to the solenoid valve of cooperation and spray gun linkage when suspension spraying operation, raw materials pressure can transmit to the storage bucket and carry out the pressure release, guarantees that two spraying pipeline pressure are unanimous, has solved the influence that the bias voltage problem caused to the spraying.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the embodiments, and it is obvious that the described embodiments are some embodiments, not all embodiments of the present invention.
Drawings
Fig. 1 is a schematic structural view of an internal circulation pressure relief device of a polyurethane coating machine of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
the reference numbers and corresponding designations in the drawings are: 1. the device comprises a material barrel, 2 parts of a plunger pump, 3 parts of a spray gun, 4 parts of a discharging pipe, 5 parts of a material conveying pipe, 6 parts of a circulating pipe, 7 parts of a check valve, 8 parts of a pressure release valve, 9 parts of a temperature sensor, 10 parts of a pressure sensor, 11 parts of a filter screen, 12 parts of a collecting tank, 13 parts of a support ring, 14 parts of a liquid level sensor, 15 parts of a feeding pipe and 16 parts of an electromagnetic valve.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
When the existing polyurethane spraying machine stops working, a material pump actually has a short time for feeding, so that the pressure in a feeding pipeline is increased, and two spraying pipelines of the polyurethane spraying machine are biased to influence the use. For solving the bias problem of spraying pipeline, design following pressure release structure:
as shown in fig. 1, the utility model provides a polyurethane coating machine internal circulation pressure relief device, including storage bucket 1, plunger pump 2 and spray gun 3, storage bucket 1 is connected with plunger pump 2 through unloading pipe 4, plunger pump 2 is connected with spray gun 3 through conveying pipeline 5, the circulating pipe 6 connected with storage bucket 1 is provided on conveying pipeline 5, check valve 7 is provided between circulating pipe 6 and plunger pump 2, decompression valve 8 is also provided on circulating pipe 6;
when the spray gun 3 is opened, the pressure relief valve 8 cuts off the circulating pipe 6; when the spray gun 3 is closed, the pressure relief valve 8 opens the circulation pipe 6.
In the embodiment, the circulating pipe 6 connected to the material conveying pipe 5 in the material barrel 1 is additionally arranged, so that the original material conveying pipe 5 is changed into a three-way structure, when the material conveying device is normally used, the pressure release valve 8 closes and cuts off the circulating pipe 6, and raw materials in the material barrel 1 enter the spray gun 3 through the plunger pump 2 and the material conveying pipe 5 to operate; when the spray gun 3 is suspended for use, the pressure release valve 8 is opened and then is instantly communicated with the circulating pipe 6, at the moment, the raw materials are subjected to pressure release through the circulating pipe 6 in the charging basket 1, the spray gun 3 has no pressure effect, the pressure of two spraying pipelines is ensured to be consistent, and the problem of bias voltage is solved.
For detecting the pressure and temperature of the material in the feed conveyor pipe 5, so that the lance 3 can be adjusted. The feed delivery pipe 5 is also provided with a temperature sensor 9 and a pressure sensor 10, and the temperature sensor 9 and the pressure sensor 10 are arranged between the check valve 7 and the spray gun 3.
As shown in fig. 1-2, in order to filter the raw material and avoid the blockage of the spray gun 3, a filter screen 11 is arranged in the charging basket 1, and one end of the circulating pipe 6 far away from the feed delivery pipe 5 is positioned above the filter screen 11;
wherein, filter screen 11 is upwards protruding from the edge gradually towards the center, and its edge still encloses the collecting vat 12 with the laminating of storage bucket 1 inner wall.
This filter screen 11 structure has certain slope and filter area bigger, and when whereabouts raw materials and the contact of filter screen 11, impurity in the raw materials can be followed filter screen 11 gliding to collecting vat 12 and collected, is difficult for piling up the jam on filter screen 11, has both guaranteed filter life and efficiency, has the convenience and collects the processing to impurity.
Preferably, the filter screen 11 and the collecting tank 12 are integrally made of stainless steel material, which is convenient to manufacture and has long service life.
For the dismantlement and the installation of making things convenient for filter screen 11, the below of filter screen 11 is provided with support ring 13, and the constant head tank has been seted up to the upper end of support ring 13, and in the constant head tank was partly embedded into to collecting vat 12, take out filter screen 11 and can handle the impurity in collecting vat 12, easy operation is convenient.
As shown in fig. 1, a liquid level sensor 14 is further arranged in the charging basket 1, and the liquid level sensor 14 is a duckbilled liquid level controller; in addition, the charging barrel 1 is also connected with a feeding pipe 15 positioned above the filter screen 11, the feeding pipe 15 is provided with an electromagnetic valve 16 associated with the liquid level sensor 14, and when the liquid level sensor 14 detects that the liquid level in the charging barrel 1 is lower than a set value, the electromagnetic valve 16 is opened, so that automatic material supplement of raw materials in the charging barrel is realized.
In order to reduce the heat loss of the raw materials and reduce the energy consumption for heating, the outer surface of the charging basket 1 is provided with a heat-insulating layer. Wherein, the heat preservation layer is made of heat preservation cotton, and polyurethane foam layer, rubber and plastic layer and the like can be selected as the heat preservation layer.
The present invention is not limited to the above specific embodiments, and for those skilled in the art, the above conception can be used without any creative work, and all the changes made fall within the protection scope of the present invention.
Claims (10)
1. A polyurethane coating machine internal circulation pressure relief device comprises a charging basket (1), a plunger pump (2) and a spray gun (3), wherein the charging basket (1) is connected with the plunger pump (2) through a discharging pipe (4), the plunger pump (2) is connected with the spray gun (3) through a material conveying pipe (5), the polyurethane coating machine internal circulation pressure relief device is characterized in that the material conveying pipe (5) is provided with a circulating pipe (6) connected with the charging basket (1), a check valve (7) is arranged between the circulating pipe (6) and the plunger pump (2), and the circulating pipe (6) is further provided with a pressure relief valve (8);
when the spray gun (3) is opened, the pressure relief valve (8) cuts off the circulating pipe (6); when the spray gun (3) is closed, the pressure relief valve (8) is communicated with the circulating pipe (6).
2. The device for circulating pressure relief in a polyurethane coating machine according to claim 1, characterized in that a temperature sensor (9) and a pressure sensor (10) are further arranged on the feed delivery pipe (5), and the temperature sensor (9) and the pressure sensor (10) are arranged between the check valve (7) and the spray gun (3).
3. The internal circulation pressure relief device for the polyurethane coating machine according to claim 1 is characterized in that a filter screen (11) is arranged in the charging basket (1), and one end of the circulation pipe (6) far away from the feed delivery pipe (5) is positioned above the filter screen (11).
4. The internal circulation pressure relief device of the polyurethane coating machine according to claim 3, wherein the filter screen (11) gradually protrudes upwards from the edge to the center, and the edge is further surrounded with a collecting groove (12) attached to the inner wall of the charging basket (1).
5. The internal circulation pressure relief device of the polyurethane spraying machine as claimed in claim 4, wherein the filter screen (11) and the collecting tank (12) are integrally made of stainless steel.
6. The internal circulation pressure relief device of the polyurethane coating machine according to claim 4, wherein a support ring (13) is arranged below the filter screen (11), a positioning groove is formed in the upper end of the support ring (13), and the collecting groove (12) is partially embedded into the positioning groove.
7. The polyurethane coating machine internal circulation pressure relief device according to claim 3, characterized in that a liquid level sensor (14) is further arranged in the charging basket (1), and the liquid level sensor (14) is a duckbill liquid level controller.
8. The internal circulation pressure relief device for the polyurethane coating machine according to claim 7, wherein the charging basket (1) is further connected with a feeding pipe (15) located above the filter screen (11), the feeding pipe (15) is provided with an electromagnetic valve (16) associated with the liquid level sensor (14), and when the liquid level sensor (14) detects that the liquid level in the charging basket (1) is lower than a set value, the electromagnetic valve (16) is opened.
9. The internal circulation pressure relief device of the polyurethane spraying machine as claimed in claim 1, wherein the outer surface of the charging basket (1) is provided with an insulating layer.
10. The polyurethane coating machine internal circulation pressure relief device of claim 9, wherein the heat insulation layer is made of heat insulation cotton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220404518.1U CN217491302U (en) | 2022-02-24 | 2022-02-24 | Polyurethane spraying machine internal circulation pressure relief device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220404518.1U CN217491302U (en) | 2022-02-24 | 2022-02-24 | Polyurethane spraying machine internal circulation pressure relief device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217491302U true CN217491302U (en) | 2022-09-27 |
Family
ID=83345844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220404518.1U Active CN217491302U (en) | 2022-02-24 | 2022-02-24 | Polyurethane spraying machine internal circulation pressure relief device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217491302U (en) |
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2022
- 2022-02-24 CN CN202220404518.1U patent/CN217491302U/en active Active
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