CN220444128U - Electrostatic spray head for electrostatic spray gun - Google Patents
Electrostatic spray head for electrostatic spray gun Download PDFInfo
- Publication number
- CN220444128U CN220444128U CN202320863848.1U CN202320863848U CN220444128U CN 220444128 U CN220444128 U CN 220444128U CN 202320863848 U CN202320863848 U CN 202320863848U CN 220444128 U CN220444128 U CN 220444128U
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- Prior art keywords
- electrostatic spray
- spray head
- rod
- powder
- speed reducing
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- 239000007921 spray Substances 0.000 title claims abstract description 91
- 239000000843 powder Substances 0.000 claims abstract description 69
- 230000001603 reducing effect Effects 0.000 claims abstract description 60
- 230000007246 mechanism Effects 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 description 6
- 238000007590 electrostatic spraying Methods 0.000 description 3
- 230000005686 electrostatic field Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Electrostatic Spraying Apparatus (AREA)
Abstract
The utility model provides an electrostatic spray head for electrostatic spray gun, includes the spray gun rifle body, electrostatic spray head and shower nozzle shroud, the powder outlet department at the spray gun rifle body is installed to the electrostatic spray head, the shower nozzle shroud screws the electrostatic spray head on the spray gun body, through being equipped with the stroke chamber in the inside of electrostatic spray head, through setting up the reducing mechanism that is used for consuming the inertia of stroke intracavity powder in the stroke intracavity, reducing mechanism is including being used for resisting the deceleration rod that the powder strikeed and being used for fixing the deceleration rod in the stroke intracavity, before the powder flow in the conveyer pipe is about to spout, the powder that is located the electrostatic spray head can be slowed down because of the deceleration effect that the deceleration rod produced, make through the more even of deceleration spray head spun powder, thereby can improve the powder loading rate by a wide margin, reduce the raw materials extravagant.
Description
Technical Field
The utility model relates to the technical field of electrostatic spraying, in particular to an electrostatic spray head for an electrostatic spray gun.
Background
The electrostatic spray head is a component applied to a spray gun in the powder electrostatic spraying technology, a metal guide cup on the electrostatic spray head is connected with a high-voltage negative electrode to enable sprayed powder to be negatively charged, a workpiece to be coated is grounded to form a positive electrode, a strong electrostatic field is formed between the spray gun and the workpiece through the electrostatic spray head, and the charged powder is uniformly adsorbed on the workpiece under the action of the electrostatic field to form a spraying effect.
In traditional electrostatic spraying technique, can be fast because inertia will be sent out to the scattering all around when spraying powder from the shower nozzle when spraying powder volume and the certain circumstances of speed of giving vent to anger, thereby most powder can not effectively adsorb on the work piece and lead to the powder extravagant, and the powder feeding rate is lower, and an electrostatic powder spraying nozzle convenient to maintain as disclosed in patent CN202123053392.2 includes: the surface of nozzle cap is provided with presses unlocking device, and leading-in platform has been seted up to the one end of nozzle cap, and the location spout has been seted up to the internal surface of nozzle cap, and the nozzle cap setting is at the surface of nozzle base, and the surface of nozzle base is provided with locking mechanism, and the surface of nozzle base is provided with the location slider, in this design, under certain powder spraying volume and powder spraying pressure, can disperse inhomogeneous when powder is spouted from the nozzle and lead to appearing the phenomenon that the powder volume of both sides is many middle part powder volume less, and this phenomenon makes the powder loading rate decline of work piece cause the wasting of resources.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides an electrostatic spray head for an electrostatic spray gun.
The technical scheme adopted for solving the technical problems is as follows:
the utility model provides an electrostatic spray head for electrostatic spray gun, includes the spray gun rifle body, electrostatic spray head and shower nozzle shroud, the play powder mouth department at the spray gun rifle body is installed to the electrostatic spray head, the shower nozzle shroud screws the electrostatic spray head on the spray gun rifle body, the electrostatic spray head includes the shower nozzle body, sets up the travel chamber in the shower nozzle body and sets up the electrode needle at the travel intracavity, the travel intracavity still is equipped with the reducing gear who is used for consuming the inertia of travel intracavity powder, the reducing gear sets up the one end at the travel intracavity electrode needle, the reducing gear is including the deceleration rod that is used for resisting the powder impact and the bearing structure who is used for fixing the deceleration rod in the travel intracavity.
Further, the deceleration rod is arranged in the center of the stroke cavity, an annular channel for powder to pass through is formed between the deceleration rod and the cavity wall of the stroke cavity, and the supporting structure is arranged in the annular channel.
Further, an impact-resistant hole for reducing powder impact is formed in one end of the speed reducing rod facing the powder flow, and the impact-resistant hole extends along the axial direction of the speed reducing rod.
Further, the length of the speed reducing rod is 0.5-2.0 times of the length of the stroke cavity, and the diameter of the speed reducing rod is 1/3~3/4 of the diameter of the stroke cavity.
In the utility model, the end of the speed reducing rod facing the powder flow is also provided with an adjusting component for adjusting the length of the speed reducing rod, and the adjusting component is used for enabling the speed reducing rod to be used under the working conditions of different flow rates and powder amounts.
Further, the adjusting component comprises a connecting part arranged at one end of the speed reducing rod and an extension rod spliced at one end of the speed reducing rod, and one end of the extension rod is provided with a connector matched with the connecting part.
Further, the connecting portion is connected with the connector through threads, and the diameter of the extension rod is equal to that of the reduction rod.
The utility model has the following advantages and beneficial effects: the inside at electrostatic spray head is equipped with the stroke chamber, through setting up the reducing gear who is used for consuming the inertia of stroke intracavity powder in the stroke intracavity, reducing gear is including being used for resisting the deceleration rod that the powder strikeed and being used for fixing the bearing structure in the stroke intracavity with the deceleration rod, before the powder flow in the conveyer pipe will spout, the powder that is located electrostatic spray head can be slowed down because of the deceleration effect that the deceleration rod produced, makes through deceleration spray head spun powder more even to can improve the powder loading rate by a wide margin, reduce the raw materials extravagant.
Drawings
The utility model is further described below with reference to the drawings and embodiments:
fig. 1 is a sectional view of an electrostatic spray gun in this embodiment 1;
FIG. 2 is a schematic diagram of an electrostatic spray head in embodiment 1;
fig. 3 is a sectional view of the electrostatic spray head in the present embodiment 1;
FIG. 4 is a top view of the electrostatic spray head of example 1;
FIG. 5 is a partial sectional view showing the assembly of the electrostatic spray head and the spray gun in the embodiment 1;
FIG. 6 is a cross-sectional view of the electrostatic spray head in example 2;
fig. 7 is a partial sectional view showing the assembly of the electrostatic spray head and the spray gun in example 2.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and the present utility model is not limited to the following embodiments.
As shown in fig. 1 to 5, this embodiment discloses an electrostatic spray head for an electrostatic spray gun, including a spray gun body 1, an electrostatic spray head 2 and a spray head cover 3, one end cartridge of the electrostatic spray head 2 is at the powder outlet of the spray gun body 1, spray head cover 3 suit is at the other end of the electrostatic spray head 2 and screws the electrostatic spray head 2 on the spray gun body 1, the electrostatic spray head 2 includes a spray head body 21, a travel cavity 22 arranged in the spray head body 21 and an electrode needle 23 arranged in the travel cavity 22, a boss for enabling the electrostatic spray head 2 to abut on the spray gun body is arranged on the outer side of the spray head body 21, a limit groove for preventing the electrostatic spray head from rotating is arranged on the boss, one end of the electrode needle 23 is arranged in the travel cavity 22, the other end of the electrode needle 23 outwards extends out of the travel cavity 22 and is used for sending out corona to enable sprayed powder to be charged, a speed reducing mechanism 24 for reducing powder flow is further arranged in the travel cavity 22, the speed reducing mechanism 24 is arranged at one end of the electrode needle 23 in the travel cavity 22, the speed reducing mechanism 24 comprises a speed reducing rod 241 and an electrode needle 23 arranged in the travel cavity 22, and a speed reducing rod 241 is arranged in the spray tube, and the powder is further evenly arranged in the spray head is capable of reducing the powder, and the powder is located in the spray tube, and the powder is more uniformly in the speed reducing rod is more stable, and the powder is more stable.
Further, the deceleration rod 241 is disposed in the center of the travel cavity 22, so that an annular channel 243 for powder to pass through is formed between the deceleration rod 241 and the cavity wall of the travel cavity 22, and the support structure 242 is disposed in the annular channel 243 and equally divides the annular channel into two halves, and the annular channel 243 has a smooth and uniform structure, so that the abrasion of the powder flow to the inner arm of the travel cavity 22 can be reduced.
Further, in order to prolong the service life of the electrostatic spray head 2, preferably, an impact hole 241a for reducing powder impact is provided at an end of the deceleration rod 241 facing the powder flow, the impact hole 241a extends inward along the axial direction of the deceleration rod 241, and since the inside of the impact hole 241a is closed, a high-pressure area is formed in the impact hole 241a when the deceleration rod 241 is impacted by the powder flow, and at this time, the end face of the deceleration rod 241 is used for counteracting the impact of the powder flow through the high-pressure area, so as to avoid the end of the deceleration rod 241 from being worn by the powder flow impact.
Further, through multiple experiments, the optimal length of the reducing rod 241 is 50-200 mm, the reducing effect of the powder flow is deteriorated due to the fact that the reducing rod 241 is too short, and the powder outlet rate is affected due to the fact that the reducing rod 241 is too long; the preferred diameter of the reducing rod 241 is 7-8 mm, too small diameter of the reducing rod 241 can lead to poor reduction effect of powder flow, too large diameter of the reducing rod 241 can lead to narrowing of the annular channel 243 to cause powder flow to be blocked in the stroke cavity 22, and powder yield is affected.
In this embodiment, in order to increase the practicability of the electrostatic spray head 2, preferably, an adjusting component 244 for adjusting the length of the reducing rod 241 is further disposed at an end of the reducing rod 241 facing the powder flow, and the reducing rod 241 can be used under the working conditions of different flow rates and powder amounts by adjusting the length of the reducing rod 241 through the adjusting component 244.
Further, the adjusting unit 244 includes a connection portion 244a disposed at one end of the deceleration rod 241 and an extension rod 244b spliced at one end of the deceleration rod 241, preferably, the connection portion 244a is disposed on an inner sidewall of the impact hole 241a and connected to an end surface of the deceleration rod 241, and one end of the extension rod 244b is provided with a connection head 244c for being mounted in cooperation with the connection portion 244 a.
Further, in order to facilitate the disassembly and assembly of the adjusting component 244, preferably, the connecting portion 244a and the connecting head 244c are connected by threads, the diameter of the extension rod 244b is equal to that of the speed reducing rod 241, so that the annular channel 243 is kept smooth and flat, in a normal state, the electrostatic spray head 2 can reduce the powder flow only through the speed reducing rod 241, and when the electrostatic spray head is applied under the working conditions of larger powder discharge amount and powder discharge speed, the extension rod 244b can be screwed at the tail end of the speed reducing rod 241, so that the effect of adjusting the length of the speed reducing rod 241 is achieved.
As shown in fig. 6 to 7, the structure of the present embodiment is substantially the same as that of embodiment 1, except that: the adjusting component 244 comprises a connecting portion 244a arranged at one end of the reducing rod 241 and an extending rod 244b spliced at one end of the reducing rod 241, preferably, an adjusting column 241b is arranged on the end face of one end of the reducing rod 241, the connecting portion 244a is arranged on the side wall of the adjusting column 241b, and a connecting cavity 244d for being installed in cooperation with the connecting portion 244a is arranged at one end of the extending rod 244 b.
To facilitate the assembly and disassembly of the adjustment assembly 244, the adjustment post 241b and the connection cavity 244d are preferably threaded.
The above description is merely illustrative of the utility model and those skilled in the art may make various modifications and additions to the described embodiments or substitutions in a similar manner without departing from the scope of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.
Claims (7)
1. The utility model provides an electrostatic spray head for electrostatic spray gun, includes spray gun rifle body (1), electrostatic spray head (2) and shower nozzle shroud (3), electrostatic spray head (2) are installed in the play powder mouth department of spray gun rifle body (1), shower nozzle shroud (3) are screwed electrostatic spray head (2) on spray gun rifle body (1), electrostatic spray head (2) include shower nozzle body (21), set up travel cavity (22) in shower nozzle body (21) and electrode needle (23) of setting in travel cavity (22), its characterized in that: the device is characterized in that a speed reducing mechanism (24) for consuming inertia of powder flow in the travel cavity (22) is further arranged in the travel cavity (22), the speed reducing mechanism (24) is arranged at one end of an electrode needle (23) in the travel cavity (22), and the speed reducing mechanism (24) comprises a speed reducing rod (241) for resisting impact of the powder flow and a supporting structure (242) for fixing the speed reducing rod (241) in the travel cavity (22).
2. An electrostatic spray head for an electrostatic spray gun according to claim 1, wherein: the deceleration rod (241) is arranged in the center of the stroke cavity (22), an annular channel (243) for powder to flow through is formed between the deceleration rod (241) and the cavity wall of the stroke cavity (22), and the supporting structure (242) is arranged in the annular channel (243).
3. An electrostatic spray head for an electrostatic spray gun according to claim 2, wherein: the end of the speed reducing rod (241) facing the powder flow is provided with an impact resistance hole (241 a) for reducing the impact of the powder flow, and the impact resistance hole (241 a) axially extends along the speed reducing rod (241).
4. An electrostatic spray head for an electrostatic spray gun according to claim 3, wherein: the length of the speed reducing rod (241) is 0.5-2.0 times of the length of the stroke cavity (22), and the diameter of the speed reducing rod (241) is 1/3~3/4 of the diameter of the stroke cavity (22).
5. An electrostatic spray head for an electrostatic spray gun according to claim 1, wherein: and an adjusting component (244) for adjusting the length of the speed reducing rod (241) is further arranged at one end of the speed reducing rod (241) facing the powder flow, and the adjusting component (244) is used for enabling the speed reducing rod (241) to be used under the working conditions of different flow rates and different powder amounts.
6. An electrostatic spray head for an electrostatic spray gun as claimed in claim 5, wherein: the adjusting component (244) comprises a connecting portion (244 a) arranged at one end of the speed reducing rod (241) and an extension rod (244 b) spliced at one end of the speed reducing rod (241), and a connector (244 c) used for being matched with the connecting portion (244 a) is arranged at one end of the extension rod (244 b).
7. An electrostatic spray head for an electrostatic spray gun according to claim 6, wherein: the connecting part (244 a) and the connecting head (244 c) are connected through threads, and the diameter of the extension rod (244 b) is equal to the diameter of the speed reducing rod (241).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320863848.1U CN220444128U (en) | 2023-04-17 | 2023-04-17 | Electrostatic spray head for electrostatic spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320863848.1U CN220444128U (en) | 2023-04-17 | 2023-04-17 | Electrostatic spray head for electrostatic spray gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220444128U true CN220444128U (en) | 2024-02-06 |
Family
ID=89728823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320863848.1U Active CN220444128U (en) | 2023-04-17 | 2023-04-17 | Electrostatic spray head for electrostatic spray gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220444128U (en) |
-
2023
- 2023-04-17 CN CN202320863848.1U patent/CN220444128U/en active Active
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