CN212663921U - External mixing spray gun - Google Patents
External mixing spray gun Download PDFInfo
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- CN212663921U CN212663921U CN202020747301.1U CN202020747301U CN212663921U CN 212663921 U CN212663921 U CN 212663921U CN 202020747301 U CN202020747301 U CN 202020747301U CN 212663921 U CN212663921 U CN 212663921U
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Abstract
The utility model relates to the technical field of spray guns, in particular to an external mixing spray gun, which comprises a first steel pipe, a second steel pipe sleeved on the first steel pipe, a third steel pipe sleeved outside the second steel pipe and a nozzle, wherein the nozzle is arranged at one end of the first steel pipe and is simultaneously connected with the first steel pipe, the second steel pipe and the third steel pipe; a connecting flange is sleeved on the outer side of the third steel pipe, a first heat-preserving pipe is arranged between the second steel pipe and the first steel pipe, the first heat-preserving pipe is sleeved on the first steel pipe, and gaps are reserved among the first heat-preserving pipe, the first steel pipe and the second steel pipe; the end part of the first heat preservation pipe is connected with the side wall of the first steel pipe in a sealing mode, and vacuum is arranged between the first heat preservation pipe and the first steel pipe. First heat preservation pipe can reduce the speed of heat exchange between first steel pipe and the second steel pipe to reduce the influence of first steel pipe to the inside atmospheric pressure of second steel pipe, guarantee the atomizing effect of rivers.
Description
Technical Field
The utility model belongs to the technical field of the spray gun technique and specifically relates to an outer spray gun that mixes.
Background
The external mixing spray gun is a spray gun for atomizing liquid by high-pressure steam.
In the prior art, the utility model with the publication number of CN203578053U specifically discloses an external mixing type atomizing spray gun, which comprises a nozzle, a connecting flange, a ninety-degree elbow, a first elbow, a second elbow, a first steel pipe, a second steel pipe, a third steel pipe, a sleeve, an eccentric flange, a locking flange, a compensator, a sealing cover, an adapter, a third elbow, a nipple, a reducer, a connecting pipe and a flange, wherein the nozzle is connected with one end of the connecting flange, the ninety-degree elbow, the first elbow and the second elbow are all connected with the other end of the connecting flange, the third steel pipe is connected with the ninety-degree elbow, the second steel pipe is connected with the first elbow, the first steel pipe is connected with the second elbow, the sleeve is sleeved on the third steel pipe, the eccentric part of the flange is clamped on the sleeve, the other part of the flange is sleeved on the third steel pipe, the first steel pipe, the second steel pipe and the third steel pipe are all connected with one end of the compensator, one end of the sealing cover, one end of the adapter is connected with the other end of the sealing cover, one end of the third elbow is connected with the other end of the adapter, the threaded connecting pipe is connected with the other end of the third elbow, the reducer is fixed on the outer side of the third steel pipe, and the connecting pipe is located between the reducer and the flange.
When the atomizing spray gun is used, normal-temperature high-pressure water flow is introduced into the first steel pipe, high-temperature high-pressure water vapor is introduced between the second steel pipe and the third steel pipe, a gap between the first steel pipe and the second steel pipe is used for separating heat exchange between the water flow and the water vapor, the water flow and the water vapor are impacted outside the nozzle, and the water flow can form water mist under the impact of the water vapor.
The above scheme has the following defects that because the water flow in the first steel pipe is normal temperature (usually about 25 ℃), and the water vapor between the second steel pipe and the third steel pipe is high temperature water vapor (usually about 370 ℃), the temperature difference between the first steel pipe and the second steel pipe is high, and air exists between the first steel pipe and the second steel pipe, so that the heat exchange between the first steel pipe and the second steel pipe cannot be completely isolated by the gap between the first steel pipe and the second steel pipe, and the heat exchange between the first steel pipe and the second steel pipe can reduce the temperature of the second steel pipe to a certain extent, thereby reducing the air pressure of the water vapor and reducing the atomization effect of the water flow.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model provides an outer spray gun that mixes can reduce the speed of heat exchange between second steel pipe and the first steel pipe to promote the atomizing effect of rivers.
The above object of the present invention is achieved by the following technical solutions:
an external mixing spray gun comprises a first steel pipe, a second steel pipe sleeved on the first steel pipe, a third steel pipe sleeved on the outer side of the second steel pipe and a nozzle, wherein the nozzle is arranged at one end of the first steel pipe and is simultaneously connected with the first steel pipe, the second steel pipe and the third steel pipe; a connecting flange is sleeved on the outer side of the third steel pipe, a first heat-preservation pipe is arranged between the second steel pipe and the first steel pipe, the first heat-preservation pipe is sleeved on the first steel pipe, and a gap is reserved between the first heat-preservation pipe and the second steel pipe; the first heat preservation pipe end is connected with the side wall of the first steel pipe in a sealing mode, and vacuum is arranged between the first heat preservation pipe and the first steel pipe.
Through adopting above-mentioned technical scheme, normal atmospheric temperature rivers let in first steel pipe in, high-temperature steam lets in between second steel pipe and the third steel pipe, and first heat preservation pipe can play the heat preservation effect to first steel pipe, sets up for the vacuum between first heat preservation pipe and the first steel pipe, can effectively reduce the heat transfer rate between first steel pipe and the second steel pipe to the influence of first steel pipe to the inside atmospheric pressure of second steel pipe has been reduced.
The present invention may be further configured in a preferred embodiment as: the length of the first heat preservation pipe is the same as that of the first steel pipe.
Through adopting above-mentioned technical scheme, first heat preservation pipe can fully keep warm to first steel pipe, can effectively reduce the heat transfer rate between first steel pipe and the second steel pipe.
The present invention may be further configured in a preferred embodiment as: a plurality of groups of support rods are arranged between the first heat-preservation pipe and the first steel pipe, each group of support rods comprises a plurality of support rods, the plurality of support rods are uniformly distributed in an annular shape along the axis of the first steel pipe, one end of each support rod is fixedly connected with the inner wall of the first heat-preservation pipe, and the other end of each support rod is fixedly connected with the side wall of the first steel pipe; the support rods are uniformly distributed along the length direction of the first heat preservation pipe.
Through adopting above-mentioned technical scheme, because be cavity setting between first insulating tube and the first steel pipe, consequently, atmospheric pressure is used in first insulating tube, can make first insulating tube take place deformation, and the bracing piece can effectively support first insulating tube, guarantees that first insulating tube can not take place too obvious deformation to guarantee the working effect of first insulating tube.
The present invention may be further configured in a preferred embodiment as: be provided with first heat insulating ring between first heat insulating pipe end portion and the first steel pipe lateral wall, first heat insulating ring lateral wall and first heat insulating pipe end portion sealing connection, first heat insulating ring inner wall and first steel pipe lateral wall sealing connection.
Through adopting above-mentioned technical scheme, can carry out the heat exchange through the air between first insulating tube and the second steel pipe, and first thermal-insulated ring can effectively reduce the heat exchange rate between first steel pipe and the first insulating tube to the indirect speed that has reduced heat exchange between first steel pipe and the second steel pipe.
The present invention may be further configured in a preferred embodiment as: a buffer tube is sleeved outside the third steel tube and arranged on one side, back to the nozzle, of the connecting flange, and two ends of the buffer tube are hermetically connected with the third steel tube; the buffer tube is provided with an air inlet, and the air inlet is fixedly connected with an air inlet pipe.
Through adopting above-mentioned technical scheme, the intake pipe can be connected with the steam source for high-temperature steam enters into between buffer tube and the third steel pipe, and high-temperature steam can heat and keep warm the third steel pipe, can reduce the heat exchange rate between third steel pipe and the outside air, thereby guarantees the atmospheric pressure of vapor between third steel pipe and the second steel pipe, and then guarantees the rivers atomization effect that the spray gun is right.
The present invention may be further configured in a preferred embodiment as: the length of the buffer pipe is the same as the distance between one end, far away from the nozzle, of the third steel pipe and the connecting flange.
Through adopting above-mentioned technical scheme, the buffer tube can fully protect the third steel pipe to effectively reduce the heat exchange rate between third steel pipe and the outside air.
The present invention may be further configured in a preferred embodiment as: a second heat-insulating pipe is sleeved on the buffer pipe, two ends of the second heat-insulating pipe respectively extend to two ends of the buffer pipe in the length direction and are in sealing connection with the side wall of the third steel pipe, and a vacuum is arranged between the second heat-insulating pipe and the third steel pipe; and the second heat preservation pipe is provided with a through hole matched with the air inlet pipe, and the through hole is hermetically connected with the air inlet pipe.
Through adopting above-mentioned technical scheme, be the vacuum setting between second insulating tube and the buffer tube, can keep warm to the buffer tube to high-temperature steam between buffer tube and the third steel pipe keeps warm, makes high-temperature steam can keep warm to the vapor in the third steel pipe better.
The present invention may be further configured in a preferred embodiment as: be provided with the connecting rod between second insulating tube and the buffer tube, the connecting rod includes a plurality of connecting rods along buffer tube axis annular evenly distributed, the one end and the second insulating tube inner wall fixed connection of connecting rod, the other end and buffer tube lateral wall fixed connection.
Through adopting above-mentioned technical scheme, because be the vacuum setting between second insulating tube and the buffer tube, consequently, atmospheric pressure can be used in on the second insulating tube, and the connecting rod can support the second insulating tube, can guarantee that the second insulating tube can not take place too obvious deformation to guarantee the normal work of second insulating tube.
The present invention may be further configured in a preferred embodiment as: the second insulating tube comprises an inner tube and an outer tube, wherein the inner tube is sleeved on the buffer tube, the outer tube is sleeved on the inner tube, and an insulating layer is arranged between the inner tube and the outer tube.
Through adopting above-mentioned technical scheme, whether the heat preservation can effectively reduce heat exchange rate between second insulating tube and the buffer pipe to reduce the speed of heat exchange between outside air and the buffer pipe, thereby can indirectly guarantee the atmospheric pressure of vapor in the third steel pipe.
The present invention may be further configured in a preferred embodiment as: and a second heat insulation ring is arranged between the connecting flange and the third steel pipe, the outer inner side wall of the second heat insulation ring is hermetically connected with the side wall of the third steel pipe, and the outer side wall of the second heat insulation ring is hermetically connected with the connecting flange.
By adopting the technical scheme, the connecting flange is connected with the third steel pipe, the surface area of the connecting flange is large, and a good heat dissipation effect is achieved, so that the heat exchange rate between the connecting flange and the third steel pipe is large, the second heat insulation ring can separate the connecting flange from the third steel pipe, the heat exchange rate between the connecting flange and the third steel pipe is reduced, and the influence of the connecting flange on the steam pressure in the third steel pipe is reduced.
To sum up, the utility model discloses a following at least one useful technological effect:
1. the first heat preservation pipe can reduce the heat exchange rate between the first steel pipe and the second steel pipe, so that the influence of the first steel pipe on the air pressure in the second steel pipe is reduced, and the atomization effect of water flow is ensured;
2. the second heat preservation pipe and the buffer pipe can reduce the heat exchange rate between the third steel pipe and the external air, reduce the influence of the external air on the air pressure in the third steel pipe, and ensure the stability of the air pressure in the third steel pipe;
3. the second heat insulation ring can reduce the rate of heat exchange between the connecting flange and the third steel pipe, so that the influence of the connecting flange on the air pressure in the third steel pipe is reduced.
Drawings
FIG. 1 is a schematic structural view of an external mixing lance;
FIG. 2 is an enlarged partial schematic view of portion A of FIG. 1;
fig. 3 is a partially enlarged schematic view of a portion B in fig. 2.
In the figure, 1, a first steel pipe; 11. a water inlet pipe; 2. a first heat-insulating tube; 21. a first heat insulating ring; 22. a support bar; 3. a second steel pipe; 4. a third steel pipe; 41. a buffer tube; 42. an air inlet pipe; 43. a steam pipe; 5. a second insulating tube; 51. an inner tube; 52. a heat-insulating layer; 53. an outer tube; 54. a connecting rod; 6. a connecting flange; 61. a second heat insulating ring; 7. and (4) a nozzle.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, for the utility model discloses an outer spray gun that mixes, establish second steel pipe 3 and the cover on first steel pipe 1 and establish third steel pipe 4 on second steel pipe 3 including first steel pipe 1, cover, first steel pipe 1, second steel pipe 3 and the equal coaxial setting of third steel pipe 4. One end of the first steel pipe 1 is connected with a water inlet pipe 11, and normal temperature water flow can be introduced into the first steel pipe 1; all there is the gap between second steel pipe 3 and the first steel pipe 1 and between second steel pipe 3 and the third steel pipe 4, and one side that the third steel pipe 4 is close to inlet tube 11 is connected with steam pipe 43, and the gap between steam pipe 43 and second steel pipe 3 and the third steel pipe 4 is linked together, can let in high temperature steam between second steel pipe 3 and the third steel pipe 4 to the one end that the third steel pipe 4 is close to intake pipe 42 is with second steel pipe 3 fixed connection and be the closure setting.
Referring to fig. 1, the ends of the first steel pipe 1, the second steel pipe 3 and the third steel pipe 4, which are far away from the water inlet pipe 11, are all fixedly connected with bent pipes, the three bent pipes are connected with a nozzle 7, and water flow in the first steel pipe 1 and water vapor between the second steel pipe 3 and the third steel pipe 4 can be sprayed out from the nozzle 7 at the same time. A connecting flange 6 is arranged between two ends of the third steel pipe 4, the connecting flange 6 is sleeved on the third steel pipe 4, and the spray gun can be fixed through the connecting flange 6. A second heat insulation ring 61 is arranged between the connecting flange 6 and the third steel pipe 4, the second heat insulation ring 61 is sleeved on the third steel pipe 4, the outer side wall of the second heat insulation ring 61 is in sealing connection with the connecting flange 6, and the inner side wall of the second heat insulation ring is in sealing connection with the side wall of the third steel pipe 4.
Referring to fig. 1, the third steel pipe 4 is sleeved with a buffer tube 41, the buffer tube 41 is located on the side of the connection flange 6 facing away from the nozzle 7, and the length of the buffer tube 41 is the same as the distance between the end of the third steel pipe 4 close to the water inlet pipe 11 and the connection flange 6. The both ends and the third steel pipe 4 fixed connection of buffer tube 41 are closed and set up, have seted up the air inlet on the lateral wall of buffer tube 41, and fixedly connected with intake pipe 42 on the air inlet, intake pipe 42 can be connected with the steam source to can let in high temperature steam in to buffer tube 41.
Referring to fig. 1, a second thermal insulation pipe 5 is arranged outside a buffer pipe 41, and two ends of the second thermal insulation pipe 5 are respectively connected with two ends of the buffer pipe 41 in the length direction and are hermetically connected with the side wall of a third steel pipe 4; the second heat preservation pipe 5 is provided with a through hole for the air inlet pipe 42 and the steam pipe 43 to pass through, and the second heat preservation pipe 5 is connected with the air inlet pipe 42 and the steam pipe 43 in a sealing way.
Referring to fig. 3, the second insulating pipe 5 includes an inner pipe 51 and an outer pipe 53 sleeved on the inner pipe 51, and an insulating layer 52 is disposed between the inner pipe 51 and the outer pipe 53. The second insulating pipe 5 and the buffer pipe 41 are arranged in a vacuum manner, so that the insulating property of the second insulating pipe 5 is effectively improved.
Referring to fig. 1, two groups of connecting rods 54 are arranged between the second heat preservation pipe 5 and the buffer pipe 41, and the two groups of connecting rods 54 are distributed along the length direction of the second heat preservation pipe 5; each group of connecting rods 54 comprises eight connecting rods which are evenly distributed along the circumference of the central axis of the second insulating pipe 5, one end of each connecting rod is fixedly connected with the inner wall of the inner pipe 51, and the other end of each connecting rod is fixedly connected with the side wall of the buffer pipe 41, so that the second insulating pipe 5 is supported.
Referring to fig. 1, a first heat preservation pipe 2 is arranged between a first steel pipe 1 and a second steel pipe 3, the first heat preservation pipe 2 is sleeved on the first steel pipe 1, and the length of the first heat preservation pipe 2 corresponds to that of the first steel pipe 1.
Referring to fig. 2, a first heat insulation ring 21 is arranged between each of two ends of the first heat insulation pipe 2 and the first steel pipe 1, the outer side wall of the first heat insulation ring 21 is connected with the first heat insulation pipe 2 in a sealing manner, the inner side wall of the first heat insulation pipe 2 is connected with the side wall of the first steel pipe 1 in a sealing manner, and the first heat insulation pipe 2 and the first steel pipe 1 are arranged in a vacuum manner.
Referring to fig. 1, three groups of support rods 22 are further arranged between the first heat preservation pipe 2 and the first steel pipe 1, and the three groups of support rods 22 are distributed along the length direction of the first heat preservation pipe 2; every group bracing piece 22 all includes eight branch, and eight branch are along 2 axis circumference evenly distributed of first heat preservation pipe to the one end and the 2 inner wall fixed connection of first heat preservation pipe of branch, the other end and 1 lateral wall fixed connection of first steel pipe. The support rod 22 can support the first heat preservation pipe 2, and the influence of the atmospheric pressure on the first heat preservation pipe 2 is reduced.
The implementation principle of the embodiment is as follows: when the atomizing spray gun is used, the air inlet pipe 42 and the steam pipe 43 are communicated with a steam source, and the water inlet pipe 11 is communicated with a water source. The high-temperature water vapor enters the buffer tube 41 through the air inlet tube 42, enters between the second steel tube 3 and the third steel tube 4 through the steam tube 43, and the normal-temperature water flows into the first steel tube through the water inlet tube 11. The first heat preservation pipe 2 can obstruct the first steel pipe 1 and the second steel pipe 3, and reduces the heat exchange rate between the first steel pipe 1 and the second steel pipe.
The buffer tube 41 and the second insulating tube 5 can insulate the third steel pipe 4; meanwhile, the second heat insulation ring 61 can separate the third steel pipe 4 from the connecting flange 6, and the heat exchange rate between the third steel pipe 4 and the connecting flange 6 is reduced.
The embodiments of the present invention are the preferred embodiments of the present invention, and the protection scope of the present invention is not limited by this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (10)
1. An external mixing spray gun comprises a first steel pipe (1), a second steel pipe (3) sleeved on the first steel pipe (1), a third steel pipe (4) sleeved on the outer side of the second steel pipe (3) and a nozzle (7), wherein the nozzle (7) is arranged at one end of the first steel pipe (1), and the nozzle (7) is simultaneously connected with the first steel pipe (1), the second steel pipe (3) and the third steel pipe (4); third steel pipe (4) outside cover is equipped with flange (6), its characterized in that: a first heat preservation pipe (2) is arranged between the second steel pipe (3) and the first steel pipe (1), the first heat preservation pipe (2) is sleeved on the first steel pipe (1), and a gap is reserved between the first heat preservation pipe (2) and the second steel pipe (3); the end part of the first heat preservation pipe (2) is hermetically connected with the side wall of the first steel pipe (1), and a vacuum is arranged between the first heat preservation pipe (2) and the first steel pipe (1).
2. An external mixing lance as defined in claim 1 in which: the length of the first heat preservation pipe (2) is the same as that of the first steel pipe (1).
3. An external mixing lance as defined in claim 1 in which: a plurality of groups of support rods (22) are arranged between the first heat-insulating pipe (2) and the first steel pipe (1), each group of support rods (22) comprises a plurality of support rods, the plurality of support rods are uniformly distributed in an annular shape along the axis of the first steel pipe (1), one end of each support rod is fixedly connected with the inner wall of the first heat-insulating pipe (2), and the other end of each support rod is fixedly connected with the side wall of the first steel pipe (1); the support rods (22) are uniformly distributed along the length direction of the first heat preservation pipe (2).
4. An external mixing lance as defined in claim 1 in which: be provided with first heat insulating ring (21) between first heat insulating pipe (2) tip and first steel pipe (1) lateral wall, first heat insulating ring (21) lateral wall and first heat insulating pipe (2) tip sealing connection, first heat insulating ring (21) inner wall and first steel pipe (1) lateral wall sealing connection.
5. An external mixing lance as defined in claim 1 in which: a buffer tube (41) is sleeved on the outer side of the third steel tube (4), the buffer tube (41) is arranged on one side, back to the nozzle (7), of the connecting flange (6), and two ends of the buffer tube (41) are hermetically connected with the third steel tube (4); an air inlet is formed in the buffer tube (41), and an air inlet pipe (42) is fixedly connected to the air inlet.
6. An external mixing lance as defined in claim 5 in which: the length of the buffer tube (41) is the same as the distance between one end of the third steel tube (4) far away from the nozzle (7) and the connecting flange (6).
7. An external mixing lance as defined in claim 5 in which: a second heat-insulating pipe (5) is sleeved on the buffer pipe (41), two ends of the second heat-insulating pipe (5) respectively extend to two ends of the buffer pipe (41) in the length direction and are in sealing connection with the side wall of the third steel pipe (4), and a vacuum is arranged between the second heat-insulating pipe (5) and the third steel pipe (4); the heat preservation pipe is provided with a through hole matched with the air inlet pipe (42), and the through hole is hermetically connected with the air inlet pipe (42).
8. An external mixing lance as defined in claim 7 in which: be provided with connecting rod (54) between second insulating tube (5) and buffer tube (41), connecting rod (54) include a plurality of along buffer tube (41) axis ring shape evenly distributed's connecting rod, the one end and the second insulating tube (5) inner wall fixed connection of connecting rod, the other end and buffer tube (41) lateral wall fixed connection.
9. An external mixing lance as defined in claim 7 in which: the second heat preservation pipe (5) is established inner tube (51) and the outer tube (53) of establishing on inner tube (51) including the cover on buffer tube (41), be provided with between inner tube (51) and outer tube (53) heat preservation (52).
10. An external mixing lance as defined in claim 1 in which: a second heat insulation ring (61) is arranged between the connecting flange (6) and the third steel pipe (4), the outer inner side wall of the second heat insulation ring (61) is in sealing connection with the side wall of the third steel pipe (4), and the outer side wall of the second heat insulation ring (61) is in sealing connection with the connecting flange (6).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202020747301.1U CN212663921U (en) | 2020-05-08 | 2020-05-08 | External mixing spray gun |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202020747301.1U CN212663921U (en) | 2020-05-08 | 2020-05-08 | External mixing spray gun |
Publications (1)
Publication Number | Publication Date |
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CN212663921U true CN212663921U (en) | 2021-03-09 |
Family
ID=74814291
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN202020747301.1U Active CN212663921U (en) | 2020-05-08 | 2020-05-08 | External mixing spray gun |
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CN (1) | CN212663921U (en) |
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2020
- 2020-05-08 CN CN202020747301.1U patent/CN212663921U/en active Active
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