CN215429834U

CN215429834U - Cold spraying is with preventing blockking up laval nozzle

Info

Publication number: CN215429834U
Application number: CN202121893429.XU
Authority: CN
Inventors: 李航; 陈浩; 田峰; 谭晓蒙; 乔欣; 原帅
Original assignee: Inner Mongolia Electric Power Research Institute of Inner Mongolia Power Group Co Ltd
Current assignee: Inner Mongolia Electric Power Research Institute of Inner Mongolia Power Group Co Ltd
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2022-01-07
Anticipated expiration: 2031-08-13

Abstract

The utility model discloses an anti-blocking Laval nozzle for cold spraying, which comprises an external thread connecting column, wherein a second through groove is formed in the middle of the external thread connecting column, an external hexagonal fixing column is fixedly connected to the front end of the external thread connecting column, a middle through groove is formed in the middle of the external hexagonal fixing column, the middle of the external hexagonal fixing column is communicated with the second through groove through the groove, and an anti-blocking mechanism is fixedly connected to the middle of the external hexagonal fixing column through the inner wall of the groove, so that the anti-blocking mechanism can conveniently perform anti-blocking work, and the spraying effect is improved; can prevent that the coating powder from blockking up the circulation groove, simultaneously through reset spring's work that resets, will make fixed scraper blade can stir the work better and the clearance work, rethread stirring fan blade's rotation and the rotation of toper post in addition just can improve the effect of preventing blockking up, just so improved the spraying effect of whole watt nozzle.

Description

Cold spraying is with preventing blockking up laval nozzle

Technical Field

The utility model belongs to the technical field related to cold spraying equipment, and particularly relates to an anti-blocking Laval nozzle for cold spraying.

Background

The cold spraying technology is a new material surface modification technology which is simple and convenient to operate, safe and pollution-free; the cold spraying method is that at normal temperature or lower temperature, supersonic gas and solid two-phase gas flow are used to shoot the coating powder to the substrate to form a dense coating; therefore, the cold spraying technology does not have the high-temperature heating coating material powder particles, and the effects of high-temperature oxidation, gasification, melting, crystallization and the like which influence the coating performance do not exist; can produce corrosion-resistant, friction-resistant, reinforced, insulating, conductive and magnetic-conductive coatings on the surfaces of workpieces of metal, glass and ceramics; when cold spraying is carried out, a Laval nozzle is used, and the Laval nozzle is designed according to an isoentropic flow equation, contracts and then expands to generate a nozzle of supersonic gas jet.

The prior cold spraying equipment technology has the following problems: at present, when the Laval nozzle is put into cold spraying work, the middle of the Laval nozzle is provided with a straight-through circulation groove, so when coating powder enters the circulation groove, the coating powder can easily block the circulation groove, and the spraying effect of the Laval nozzle can be reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an anti-clogging Laval nozzle for cold spraying, which aims to solve the problem of reducing the spraying effect of the Laval nozzle in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a cold spraying is with preventing blockking up laval nozzle, includes the external screw thread spliced pole, No. two through grooves have been seted up to inside in the middle of the external screw thread spliced pole, external screw thread spliced pole front end fixedly connected with outer hexagonal fixed column, through the groove in the middle of seted up in the middle of the outer hexagonal fixed column, and in the middle through groove and No. two through groove intercommunication, it prevents blockking up the mechanism to pass through inslot wall fixedly connected with in the middle, outer hexagonal fixed column front end fixedly connected with conical nozzle post, the inside one number of through groove of having seted up in the middle of the conical nozzle post, one number of through groove and middle through groove intercommunication.

Preferably, the outer wall of the rear side of the external thread connecting column is provided with an external thread connector, and the inner wall and the outer wall of the external thread connecting column are coated with an anti-oxidation paint layer structure.

Preferably, the first through groove, the middle through groove and the second through groove form a circulation groove, the two sides of the circulation groove are wide, the middle of the circulation groove is narrow, and the inner wall of the circulation groove is coated with an anti-oxidation paint layer structure.

Preferably, prevent that jam mechanism includes toper post, fixed cylinder, connection cylinder, the stirring scraper blade that resets, stirring fan blade and bearing frame, the bearing frame has been cup jointed to the outer wall in the middle of the fixed cylinder, both ends and upper and lower both ends fixedly connected with connection cylinder around the bearing frame, fixed cylinder left and right sides outer wall fixedly connected with stirring fan blade, and stirring fan blade's number is four, fixed cylinder left and right sides outer wall fixedly connected with stirring scraper blade that resets, and two stirring scraper blade that resets are located two stirring fan blade intermediate position departments of both sides, both ends fixedly connected with toper post about the fixed cylinder.

Preferably, the outer wall of the conical column is provided with a spiral groove, and the outer wall of the conical column is coated with an anti-oxidation paint layer structure.

Preferably, the stirring scraper blade that resets is including connecting stirring post, fixed scraper blade, connection round platform, character cut in bas-relief shape open slot, reset spring and rotatory circle axle, both ends and upper and lower both ends fixedly connected with connection stirring post around the connection round platform, and the number of connecting the stirring post is eight, eight it has cup jointed rotatory circle axle, four to connect stirring post opposite side rotatory circle off-axial wall fixedly connected with fixed scraper blade, and four fixed scraper blade one end both sides have seted up the character cut in bas-relief shape open slot, and eight character cut in bas-relief shape open slots are located eight connection stirring post outsides, fixedly connected with reset spring between character cut in bas-relief shape open slot and the connection stirring post, and reset spring cup joints at rotatory circle off-axial wall.

Preferably, the number of the fixed scrapers is four, the four fixed scrapers use the connecting circular truncated cone as an axisymmetric center, and the shape structure of the other side of the four fixed scrapers is a triangular cone structure.

Compared with the prior art, the utility model provides an anti-blocking Laval nozzle for cold spraying, which has the following beneficial effects:

1. according to the utility model, the flow grooves with wide sides and narrow middle parts are formed by the first through groove, the middle through groove and the second through groove, so that the flow of coating powder can be accelerated, the rotating power can be provided for the anti-blocking mechanism, the anti-blocking mechanism can conveniently perform anti-blocking work, and the spraying effect is improved;

2. according to the utility model, the stirring fan blades drive the connecting cylinder to rotate, so that the reset stirring scraper blade can be driven to rotate, when the reset stirring scraper blade rotates, the connecting stirring cylinder and the fixed scraper blade can perform stirring work and cleaning work, so that the coating powder can be prevented from blocking the circulation groove, meanwhile, through the reset work of the reset spring, the fixed scraper blade can perform better stirring work and cleaning work, in addition, through the rotation of the stirring fan blades and the rotation of the conical column, the anti-blocking effect can be improved, and thus, the spraying effect of the whole Wall nozzle is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model without limiting the utility model in which:

FIG. 1 is a schematic structural view of an anti-clogging Laval nozzle for cold spraying according to the present invention;

FIG. 2 is a right side anatomical view of the anti-clogging Laval nozzle of the present invention;

FIG. 3 is a schematic structural diagram of a front view of the anti-clogging mechanism according to the present invention;

FIG. 4 is a schematic structural diagram of part A of FIG. 3 according to the present invention;

in the figure: 1. an outer hexagonal fixing column; 2. a conical nozzle post; 3. a first pass through slot; 4. an external thread connecting column; 5. the middle part passes through the groove; 6. an anti-clogging mechanism; 61. a tapered post; 62. fixing the cylinder; 63. connecting the stirring column; 64. a connecting cylinder; 65. fixing the scraper; 66. a stirring fan blade; 67. a bearing seat; 68. a circular truncated cone is connected; 69. a concave-shaped open slot; 610. a return spring; 611. rotating the circular shaft; 7. the second pass through the slot.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a cold spraying is with preventing blockking up laval nozzle, including external screw thread spliced pole 4, No. two through grooves 7 have been seted up to inside in the middle of the external screw thread spliced

pole

4, 4 front end fixedly connected with outer hexagonal fixed column 1 of external screw thread spliced pole, through groove 5 in the middle of having seted up in the middle of outer hexagonal fixed column 1, and the middle through groove 5 and No. two through groove 7 intercommunication, prevent blockking up mechanism 6 through 5 inner wall fixedly connected with in the middle of, 1 front end fixedly connected with conical nozzle post 2 of outer hexagonal fixed column, conical nozzle post 2 is inside to have seted up one number in the middle of the groove 3, one number is through groove 3 and middle through groove 5 intercommunication.

The circulation of coating powder can be accelerated by the circulation groove with wide sides and narrow middle formed by the first through groove 3, the middle through groove 5 and the second through groove 7, so that the anti-blocking mechanism 6 can be provided with rotary power, the anti-blocking mechanism 6 can conveniently perform anti-blocking work, and the spraying effect is improved;

it is rotatory to drive connection cylinder 64 through stirring fan blade 66, just can drive the stirring scraper blade that resets and carry out rotation work, when the stirring scraper blade that resets carries out rotation work, it will carry out stirring work and clearance work to connect stirring post 63 and fixed scraper blade 65, thereby just can prevent that the coating powder from blockking up the circulation groove, the work of resetting through reset spring 610 simultaneously, will make fixed scraper blade 65 can carry out stirring work and clearance work better, in addition rethread stirring fan blade 66's rotation and toper post 61's rotation, just can improve the effect of preventing blockking up, just so improved the spraying effect of whole tile nozzle.

In order to carry out the connection work, the outer wall of the rear side of the external thread connecting column 4 is provided with an external thread connector, the inner wall and the outer wall of the external thread connecting column 4 are coated with an anti-oxidation paint layer structure, and the external thread connecting column 4 can better carry out the fixed connection work with an external fixed end.

For the quick circulation work that carries on, a circulation groove is formed through groove 3, middle through groove 5 and No. two through groove 7 to one number, and circulation groove both sides are wide middle narrow, and the circulation groove inner wall coats anti-oxidation paint layer structure, through the circulation groove that groove 3, middle through groove 5 and No. two through groove 7 formed, just can accelerate the circulation speed of coating powder, also for providing rotatory kinetic energy to preventing blockking up mechanism 6 simultaneously.

In order to prevent blockking up work, prevent blockking up mechanism 6 and include toper post 61, fixation cylinder 62, connect cylinder 64, the stirring scraper blade that resets, stirring fan blade 66 and bearing frame 67, bearing frame 67 has been cup jointed to the outer wall in the middle of fixation cylinder 62, both ends and upper and lower both ends fixedly connected with connection cylinder 64 around the bearing frame 67, fixation cylinder 62 left and right sides outer wall fixedly connected with stirring fan blade 66, and stirring fan blade 66's number is four, fixation cylinder 62 left and right sides outer wall fixedly connected with stirring scraper blade that resets, and two stirring scraper blades that reset are located two stirring fan blade 66 intermediate positions departments of both sides, both ends fixedly connected with toper post 61 about fixation cylinder 62, through preventing blockking up mechanism 6, can prevent blockking up work better, thereby just can improve the effect of spraying.

In order to prevent the blockage, the outer wall of the conical column 61 is provided with a spiral groove, the outer wall of the conical column 61 is coated with an anti-oxidation paint layer structure, and the blockage can be better prevented through the conical column 61.

In order to perform anti-blocking work, the reset stirring scraper comprises a connecting stirring column 63, a fixed scraper 65, a connecting circular truncated cone 68, a concave-shaped open slot 69, a reset spring 610 and a rotating circular shaft 611, the connecting stirring column 63 is fixedly connected with the front end and the rear end and the upper end and the lower end of the connecting circular truncated cone 68, the number of the connecting stirring columns 63 is eight, the other sides of the eight connecting stirring columns 63 are sleeved with rotating circular shafts 611, the outer walls of the four rotating circular shafts 611 are fixedly connected with fixed scrapers 65, two sides of one end of each of the four fixed scrapers 65 are provided with a concave-shaped open slot 69, the eight concave-shaped open slots 69 are positioned at the outer sides of the eight connecting stirring columns 63, a return spring 610 is fixedly connected between the concave-shaped open slot 69 and the connecting stirring column 63, the return spring 610 is sleeved on the outer wall of the rotary circular shaft 611, through the stirring scraper blade that resets, can carry out the work of preventing blockking up better, also in order to practice thrift the cost simultaneously.

In order to perform cleaning work, the number of the fixed scrapers 65 is four, the four fixed scrapers 65 use the connecting circular truncated cone 68 as an axisymmetric center, the other side of the four fixed scrapers 65 is in a triangular cone structure, and the cleaning work and the anti-clogging work can be performed better through the four fixed scrapers 65, and meanwhile, the cost is also saved.

The working principle and the using process of the utility model are as follows: after the anti-blocking device is installed, a worker is in threaded connection with an internal thread nozzle of external spraying equipment through the external thread connecting column 4, so that the whole device is fixedly connected with the external spraying equipment, then the worker operates the external spraying equipment, the supersonic air and solid two-phase air flow can enable coating powder not to be input into the anti-blocking Laval nozzle, when the coating powder is not input into the internal part, the flow of the coating powder can be accelerated due to the flow grooves which are formed by the first through groove 3, the middle through groove 5 and the second through groove 7 and are wide at two sides and narrow at middle, meanwhile, the anti-blocking mechanism 6 can be provided with rotating power, when the coating powder does not rapidly flow through the anti-blocking mechanism 6, the stirring fan blades 66 can be driven to rotate, so that the connecting cylinder 64 is driven to rotate by the stirring fan blades 66, meanwhile, the reset stirring scraper can be driven to rotate, when the reset stirring scraper rotates, the stirring column 63 and the fixed scraper 65 are connected to perform stirring work and cleaning work, so that the coating powder can be prevented from blocking the circulation groove, in addition, the reset work of the reset spring 610 can be realized, the fixed scraper 65 can perform stirring work and cleaning work better, in the whole stirring and cleaning process, the rotation of the stirring fan blades 66 and the rotation of the conical column 61 can be avoided, the coating powder can be prevented from blocking the circulation groove, so that the coating powder can be sprayed and shot to the substrate better, the dense coating can be formed, and the spraying effect is improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a cold spraying is with preventing blockking up laval nozzle, includes external screw thread spliced pole (4), its characterized in that: no. two through grooves (7) have been seted up to inside in the middle of external screw thread spliced pole (4), external hexagonal fixed column (1) front end fixedly connected with, set up in the middle of external hexagonal fixed column (1) and pass through groove (5), and the centre passes through groove (5) and No. two through groove (7) intercommunication, it prevents blockking up mechanism (6) to pass through groove (5) inner wall fixedly connected with in the middle of, external hexagonal fixed column (1) front end fixedly connected with conical nozzle post (2), one number through groove (3) has been seted up to inside in the middle of conical nozzle post (2), one number through groove (3) and middle through groove (5) intercommunication.

2. The anti-clogging laval nozzle for cold spraying according to claim 1, further comprising: the outer wall of the rear side of the external thread connecting column (4) is provided with an external thread connector, and the inner wall and the outer wall of the external thread connecting column (4) are coated with an anti-oxidation paint layer structure.

3. The anti-clogging laval nozzle for cold spraying according to claim 1, further comprising: the first through groove (3), the middle through groove (5) and the second through groove (7) form a circulation groove, the two sides of the circulation groove are wide, the middle of the circulation groove is narrow, and the inner wall of the circulation groove is coated with an anti-oxidation paint layer structure.

4. The anti-clogging laval nozzle for cold spraying according to claim 1, further comprising: prevent blockking up mechanism (6) and include toper post (61), fixation cylinder (62), connection cylinder (64), the stirring scraper blade that resets, stirring fan blade (66) and bearing frame (67), bearing frame (67) have been cup jointed to the outer wall in the middle of fixation cylinder (62), both ends and upper and lower both ends fixedly connected with connection cylinder (64) around bearing frame (67), fixation cylinder (62) left and right sides outer wall fixedly connected with stirring fan blade (66), and the number of stirring fan blade (66) is four, fixation cylinder (62) left and right sides outer wall fixedly connected with stirring scraper blade that resets, and two stirring scraper blade that resets are located two stirring fan blade (66) intermediate position departments of both sides, both ends fixedly connected with toper post (61) about fixation cylinder (62).

5. The anti-clogging laval nozzle for cold spraying according to claim 4, wherein: the outer wall of the conical column (61) is provided with a spiral groove, and the outer wall of the conical column (61) is coated with an anti-oxidation paint layer structure.

6. The anti-clogging laval nozzle for cold spraying according to claim 4, wherein: the reset stirring scraper comprises a connecting stirring column (63), a fixed scraper (65), a connecting circular table (68), a concave open slot (69), a reset spring (610) and a rotating circular shaft (611), the front end, the rear end, the upper end and the lower end of the connecting round platform (68) are fixedly connected with connecting stirring columns (63), the number of the connecting stirring columns (63) is eight, the other sides of the eight connecting stirring columns (63) are sleeved with rotating circular shafts (611), the outer walls of the four rotating circular shafts (611) are fixedly connected with fixed scrapers (65), two sides of one end of each of the four fixed scrapers (65) are provided with a concave open slot (69), and eight concave-shaped open slots (69) are positioned at the outer sides of the eight connecting stirring columns (63), and a return spring (610) is fixedly connected between the concave-shaped open groove (69) and the connecting stirring column (63), and the return spring (610) is sleeved on the outer wall of the rotary circular shaft (611).

7. The anti-clogging laval nozzle for cold spraying according to claim 6, further comprising: the number of the fixed scrapers (65) is four, the fixed scrapers (65) take the connecting round platform (68) as an axisymmetric center, and the shape structure of the other side of the fixed scrapers (65) is a triangular cone structure.