CN116197062A - Spray head of spraying equipment, spraying equipment and preparation method of spray head of spraying equipment - Google Patents

Abstract

The application relates to a spray head of spraying equipment, the spraying equipment and a preparation method of the spray head of the spraying equipment, wherein the spray head of the spraying equipment comprises a spray pipe, a mounting seat and a spray nozzle, and the mounting seat is fixedly arranged in the spray pipe and is used for mounting the spray nozzle; the front end of the spray pipe is provided with a sealing element, and the rear end of the spray pipe is provided with a fluid inlet; the side wall of the spray pipe is provided with a through hole, the first end part of the mounting seat and the inner wall of the spray pipe are fixed along the circumferential direction of the through hole, a channel is formed between the second end part of the mounting seat and the inner wall of the spray pipe and is communicated between the fluid inlet and the nozzle, and the included angle between the axis of the nozzle and the axis of the spray pipe is larger than 0 degrees. The spray head can spray the region to be sprayed in a region with smaller space, so as to ensure the spraying effect of the region to be sprayed.

Description

Spray head of spraying equipment, spraying equipment and preparation method of spray head of spraying equipment

Technical Field

The application relates to the technical field of spraying equipment, in particular to a spray head of spraying equipment, spraying equipment and a preparation method of the spray head of the spraying equipment.

Background

In the automobile processing, accessible spraying equipment sprays the antiseptic to automobile parts, and spraying equipment includes the shower nozzle, and the shower nozzle is equipped with the nozzle, among the prior art, and the axis of spraying equipment's shower nozzle and the spraying direction of nozzle are coaxial, so set up, when stretching into the region of waiting to spray with spraying equipment's nozzle, only can follow the axial extension line place region of shower nozzle and spray, and to the narrow and small lateral wall region in space, then can't carry out spraying operation.

Therefore, how to perform spraying operation on the area to be sprayed in the area with smaller space so as to ensure the spraying effect of the area to be sprayed is a technical problem required to be solved by those skilled in the art.

Disclosure of Invention

The purpose of the application is to provide a spray head of spraying equipment, spraying equipment and a preparation method of the spray head of the spraying equipment, which can carry out spraying operation on an area to be sprayed in a small space so as to ensure the spraying effect of the area to be sprayed.

In order to solve the technical problems, the application provides a spray head of spraying equipment, which comprises a spray pipe, a mounting seat and a spray nozzle, wherein the mounting seat is fixedly arranged in the spray pipe and is used for mounting the spray nozzle; the front end of the spray pipe is provided with a sealing element, and the rear end of the spray pipe is provided with a fluid inlet; the side wall of the spray pipe is provided with a through hole, the first end part of the mounting seat and the inner wall of the spray pipe are fixed along the circumferential direction of the through hole, a channel is formed between the second end part of the mounting seat and the inner wall of the spray pipe, the channel is communicated between the fluid inlet and the spray nozzle, and an included angle between the axis of the spray nozzle and the axis of the spray pipe is larger than 0 degrees.

When the inner wall of the area to be sprayed is sprayed through the spray head, the position of the spray head is not required to be adjusted at a large angle, and only the spray head is required to be moved and rotated, so that the space requirement in the area to be sprayed is reduced while the inner wall of the area to be sprayed is ensured to be effectively sprayed.

Optionally, the mounting seat is provided with a mounting hole, the mounting hole is a threaded hole, and the nozzle can pass through the through hole and be in threaded fit with the mounting hole.

Optionally, the first end portion may be attached to an inner wall of the nozzle and fixed by welding.

Optionally, the second end portion is further provided with a flow guiding surface, and the channel formed between the flow guiding surface and the inner wall of the nozzle is tapered along the fluid flow direction.

Optionally, the end of the seal is provided with a guide surface.

Optionally, the angle between the axis of the nozzle and the axis of the nozzle is 45 ° -90 °.

Optionally, the nozzle comprises a shell and a core body, the shell is fixed with the mounting seat, a mounting cavity is formed in the shell, an end cover for blocking the mounting cavity is further arranged at the front end of the shell, and a nozzle is arranged on the end cover; the core body can be inserted into the mounting cavity from the rear end of the shell and is fixed with the shell; the core body is provided with an axial flow passage, the front end side of the core body is also provided with a radial flow passage, and an atomization gap communicated with the nozzle is formed between the front end of the core body and the rear side wall surface of the end cover; the rear end of the core body is also provided with a limiting structure, an adjusting pad is clamped between the limiting structure and the rear end of the shell body, and the adjusting pad can adjust the axial length of the core body in the mounting cavity so as to adjust the size of the atomizing gap.

Optionally, the number of the radial flow channels is at least three, and the radial flow channels are uniformly arranged along the circumferential direction of the core body.

Optionally, the core and the shell are fixed by screw thread fit.

Optionally, an operation plane is provided on an inner wall of the rear end of the axial flow channel, and an operation tool for disassembling and assembling the core body can be abutted with the operation plane and drive the core body to rotate through the operation plane.

Optionally, the outer peripheral wall of casing still is equipped with annular fender piece along its radial outside, the casing can install in the mount pad, just annular fender piece with still press from both sides between the terminal surface of mount pad and be equipped with annular sealing pad.

The application also provides a spray device comprising a spray head as described above.

The spray device with the spray head has technical effects similar to those of the spray head, and is not repeated here for saving the space.

The application also provides a preparation method of the spray head of the spraying equipment, which comprises the following steps:

s1: a through hole is formed in the side wall of the spray pipe;

s2: inserting an installation seat into a spray pipe from one end of the spray pipe, welding and fixing the first end of the installation seat and the inner wall of the spray pipe by welding, wherein an included angle between the axis of an installation hole of the installation seat and the axis of the spray pipe is larger than 0 degree;

s3: the nozzle penetrates through the through hole and is fixed with the mounting hole;

s4: the end of the spout remote from the fluid inlet is sealed by a seal.

The spray head prepared by the preparation method does not need to adjust the position of the spray head at a large angle when spraying the inner wall of the area to be sprayed, and only needs to move and rotate the spray head, so that the space requirement in the area to be sprayed is reduced while the inner wall of the area to be sprayed can be effectively sprayed.

Optionally, between steps S2 and S3, step S21 is further included: machining the through hole and the first end to form a counterbore at the first end, and making the bore diameter of the through hole larger than the maximum outer diameter of the nozzle;

in step S3, the nozzle penetrates through the through hole and is fixed with the mounting hole, so that the annular blocking piece of the nozzle is abutted with the end face of the counter bore.

Drawings

FIG. 1 is a cross-sectional view of a spray head of a spray device provided in an embodiment of the present application;

FIG. 2 is a schematic view of the spout and mount of FIG. 1;

FIG. 3 is a schematic view of the structure of the sprinkler head of FIG. 1;

FIG. 4 is a schematic view of the structure of the core of FIG. 3;

fig. 5 and 6 are flow block diagrams of a method for manufacturing a spray head of a spraying apparatus according to an embodiment of the present application.

In fig. 1 to 6, reference numerals are explained as follows:

1-a spray pipe, 11-a fluid inlet and 12-a through hole;

2-mounting seats, 21-mounting holes, 22-first end parts, 23-second end parts, 24-guide surfaces and 25-end surfaces of counter bores;

3-nozzle, 31-shell, 311-end cover, 312-nozzle, 313-annular baffle, 32-core, 321-axial flow channel, 322-radial flow channel, 323-limit structure, 324-operation plane, 33-atomization gap, 34-adjusting pad, 35-annular sealing pad;

4-seals, 41-guide surfaces;

5-channel.

Detailed Description

In order to make the technical solution of the present application better understood by those skilled in the art, the present application will be further described in detail with reference to the accompanying drawings and specific embodiments.

The embodiment of the application provides a spray head and spraying equipment of spraying equipment, wherein, spraying equipment includes above-mentioned spray head, and this spraying equipment can be used for the car in the course of working, to car spraying antiseptic etc. the spray head includes the nozzle, and spraying equipment can pressurize the antiseptic to spout with the atomizing state by the nozzle, thereby guarantee that the spraying is even.

When the spraying equipment sprays the preservative on the automobile, the structure of each part in the automobile needs to be considered, and to the narrow and small region to be sprayed in space, the spray head of the spraying equipment needs to be stretched into the interior for spraying, if the axis of the spray head of the spraying equipment and the axis of the spray nozzle are arranged in a collinear manner, the spray head needs to be stretched into the region to be sprayed, and the angle of the spray head is adjusted by moving and rotating the spray head, so that the spray nozzle 3 can face the inner side wall of the region to be sprayed, and the spraying effect of each part of the region to be sprayed is ensured.

However, if the space in the region to be sprayed is small, the movement and angle adjustment of the spray head in the spray head are limited, so that the inner side wall of the region to be sprayed with a small space cannot be effectively sprayed, and further the spraying effect cannot be ensured. For this kind of condition, in order to guarantee the spraying effect, in the spraying equipment that this application embodiment provided, as shown in fig. 1, the contained angle between axis BB 'of shower nozzle and axis AA' of nozzle 3 is greater than 0, that is to say, axis AA 'of nozzle 3 is the default contained angle with axis BB' of shower nozzle, and at this moment, when stretching into the district of waiting to spray with this shower nozzle, need not the position of wide angle adjustment shower nozzle to when guaranteeing to wait to spray the regional inside wall effectively and spray, reduce the space requirement of waiting in the district.

Specifically, the included angle between the axis of the spray head and the axis of the nozzle 3 is 45 ° -90 °, as shown in fig. 1, the axis BB 'of the spray head and the axis AA' of the nozzle 3 are vertically arranged, that is, the included angle between the two is 90 °, so that when the side wall in the area to be sprayed is sprayed, the angle of the spray head does not need to be adjusted, and only the spray head needs to be moved and rotated.

As shown in fig. 1, the spray head comprises a spray pipe 1, a mounting seat 2 and a spray nozzle 3, wherein the mounting seat 2 is fixedly arranged in the spray pipe 1 and is used for mounting the spray nozzle 3, a sealing element 4 is arranged at the front end of the spray pipe 1, a fluid inlet 11 is arranged at the rear end of the spray pipe 1, a through hole 12 is formed in the side wall of the spray pipe 1, the mounting seat 2 comprises a first end 22 and a second end 23, the first end 22 and the inner wall of the spray pipe 1 are fixed along the circumferential direction of the through hole 12, a channel 5 is formed between the second end 23 and the inner wall of the spray pipe 1, and the channel 5 is communicated between the fluid inlet 11 and the spray nozzle 3. The axis BB 'of the nozzle means the axis of the nozzle 1, and the included angle between the axis AA' of the nozzle 3 and the axis of the nozzle 1 is larger than 0 degrees.

Where "front end" refers to an end toward the downstream side of the fluid, and correspondingly "rear end" refers to an end toward the upstream side of the fluid, the specific fluid flow direction is indicated by the arrow in fig. 1.

In this embodiment, the nozzle 3 is not directly fixed in the spray tube 1, but through setting up mount pad 2, this mount pad 2 is fixed in the spray tube 1, and the nozzle 3 is fixed in mount pad 2, through hole 12 has been seted up through the lateral wall of spray tube 1, and the antiseptic of nozzle 3 spun can pass through hole 12 to treat the spraying region, and the circulation of antiseptic can be guaranteed to passageway 5 between the second tip 23 of mount pad 2 and the inner wall of spray tube 1, can confirm the contained angle between the axis of spray tube 1 and the axis of nozzle 3 through mount pad 2, simple structure and stability are good.

The mount pad 2 is located spray tube 1, laminating between first tip 22 and the inner wall of spray tube 1 to pass through welded fastening between the two, as shown in fig. 2, when spray tube 1 is the pipe, its inner wall is the arc structure, and at this moment, the outer fringe face of the first tip 22 of mount pad 2 also is the arc structure and laminating with the inner wall adaptation of spray tube 1, and welded fastening can guarantee the stability of connecting between the two.

The connection manner between the mounting seat 2 and the nozzle 3 is not limited, for example, in this embodiment, the mounting seat 2 is provided with a mounting hole 21, after the mounting seat 2 is fixed with the spray pipe 1, an included angle between an axis of the mounting hole 21 and an axis of the spray pipe 1 is determined, specifically, the mounting hole 21 is a threaded hole, that is, an inner wall of the mounting hole 21 is provided with an internal thread, correspondingly, the nozzle 3 is provided with an external thread, and the nozzle 3 can be screwed in the mounting hole 21, so as to realize connection between the nozzle 3 and the mounting seat 2.

Of course, in this embodiment, the nozzle 3 and the mounting seat 2 may be connected by welding or interference fit, and when connected by screw fit, the nozzle 3 is convenient to disassemble and assemble, and in the use process, the nozzle 3 is inevitably blocked, so that the disassembly and assembly are convenient, and the later maintenance operation can be simplified.

As shown in fig. 1 and 2, the second end 23 of the mounting seat 2 is further provided with a guide surface 24, and a channel 5 formed between the guide surface 24 and the inner wall of the nozzle 1 tapers from back to front along the fluid flow direction, specifically, the guide surface 24 may be an inclined surface or an arc surface, the opening of the channel 5 towards the end of the guide inlet is larger, and the channel 5 gradually tapers along the fluid flow direction, so that sufficient fluid can flow into the nozzle 3, the spraying pressure requirement is ensured, and the spraying effect is ensured.

The first end 22 is used for being fixed with the spray pipe 1, and the redundant part of the second end 23 is removed as far as possible while ensuring that the spray nozzle 3 can be stably fixed with the mounting hole 21 of the mounting seat 2, so that the channel 5 is ensured to be large enough, and smooth fluid flow is ensured.

As shown in fig. 1, the sealing element 4 and the end part of the spray pipe 1 are also fixed by welding, specifically, the sealing element 4 and the end of the spray pipe 1 far away from the fluid inlet 11 are sealed and welded along the circumferential direction, so that the sealing performance can be ensured, the integral structure can be simplified, and the structural stability can be ensured.

Further, as shown in fig. 1, the sealing member 4 is further provided with a guiding surface 41, when spraying a narrow area to be sprayed, the spray head needs to be extended into the interior, at this time, the sealing member 4 is located at the forefront of the spray head, and the guiding surface 41 is arranged, so that the spray head is convenient to move. In this embodiment, the guiding surface 41 may be an inclined surface or an arc surface, preferably an arc surface, so as to avoid the surface of the sealing element 4 having edges and corners, and further avoid the situation of collision damage to the area to be sprayed in the spraying process.

As shown in fig. 3, the nozzle 3 includes a housing 31 and a core 32, wherein a mounting cavity is provided in the housing 31, an end cap 311 for blocking the mounting cavity is provided at a front end of the housing 31, a nozzle 312 is further provided at the end cap 322, a rear end of the housing 31 is of an opening structure, the opening is communicated with the mounting cavity, and the core 32 can be inserted into the mounting cavity through the opening at the rear end of the housing 31 and is fixedly connected with the housing 31.

The core 32 is provided with an axial flow passage 321 along the axial direction thereof, meanwhile, the core 32 is also provided with a radial flow passage 322 along the radial direction thereof, specifically, the radial flow passage 322 is positioned at the front end of the core 32, and a gap is formed between the front end of the core 32 and the rear side wall surface of the end cover 311, the gap is an atomization gap 33, the atomization gap 33 is communicated with the spray nozzle 312, specifically, fluid for spraying can enter the axial flow passage 321 from the rear end of the core 32 along the channel 5 and flow to the radial flow passage 322 along the axial flow passage 321, then the fluid flows out into the atomization gap 33 along the radial flow passage 322, reaches the spray nozzle 312 through the atomization gap 33, and is sprayed out by the spray nozzle 312.

It will be appreciated that the size of the atomizing gap 33 can affect the flow rate and atomization effect of the atomized fluid sprayed from the nozzle 312, and that the viscosity of different types of fluids may be different due to different types of sprayed fluids, and that if the atomizing gap 33 is too large or too small, the atomization effect and thus the spraying effect may be affected.

In this embodiment, the rear end of the core 32 is further provided with a limiting structure 323, when the core 32 is mounted in the mounting cavity, the limiting structure 323 can be abutted against the rear end of the housing 31, and an adjusting pad 34 is further clamped between the limiting structure 323 and the rear end of the housing 31, and the thickness of the adjusting pad 34 can be set according to practical conditions, so that the axial length of the core 32 in the mounting cavity is adjusted, and the size of the atomizing gap 33 is adjusted, that is, for different spraying fluids, the atomizing gap 33 can be adjusted through the adjusting pads 34 with different thicknesses, so that the atomizing effect of the nozzle 3 is ensured, and the spraying effect is further ensured.

Specifically, the adjusting pad 34 is an annular structure arranged along the circumferential direction of the core 32, so that the thickness of each position in the circumferential direction is uniform, the axis of the core 32 and the axis of the mounting cavity are further guaranteed to be collinear, the situation that the mounting is blocked due to the inclination of the core 32 is avoided, or the atomization gap 33 is nonuniform in circumferential direction due to the inclination after the assembly of the core 32, and the atomization effect is influenced.

Specifically, in the use process, after a spraying fluid is selected, before spraying, an adjusting pad 34 with different thickness is arranged between the limiting structure 323 and the rear end of the shell 31 to adjust the size of the atomizing gap 33, so that an optimal atomizing gap 33 is determined, the corresponding spraying fluid can be sprayed out in a better atomizing state, and after an atomizing effect is ensured, spraying operation is performed.

In this embodiment, the number of the radial flow passages 322 of the core 32 is at least three, and each radial flow passage 322 is uniformly arranged along the circumferential direction of the core 32, so that compared with a solution having only one or two radial flow passages 322, the fluid in the axial flow passage 321 can uniformly flow into the atomizing gap 33 along each radial flow passage 322, thereby ensuring that the spray width formed during spraying through the nozzle 312 is in an axisymmetric solid cone shape, and ensuring the atomizing effect.

The core 32 and the shell 31 are fixed through screw fit, or the core 32 and the shell 31 can be fixed through interference fit, or through clamping and the like, and when the core 32 and the shell 31 are fixed through screw fit, the disassembly and assembly operations of the core 32 can be facilitated while the connection stability is ensured, so that the adjustment pad 34 can be replaced conveniently, and the later maintenance operation is facilitated.

The core 32 and the shell 31 are fixed through screw fit, specifically, when the installation is performed, the core 32 can be rotated by an operation tool, so that the core 32 gradually enters the installation cavity along the axial direction until the limit structure 323 at the rear end of the core 32 and the rear end of the shell 31 clamp the adjusting pad 34, which indicates that the core 32 is installed in place. As shown in fig. 3 and 4, an operation plane 324 is provided on an inner wall of a rear end of the axial flow channel 321 of the core 32, and specifically, when the core 32 is assembled and disassembled, an operation tool can be inserted into the axial flow channel 321 and is abutted against the operation plane 324, and the operation tool acts on the operation plane 324 to drive the core 32 to rotate relative to the housing 31, so as to complete the assembly and disassembly operations of the core 32.

Inserting the installation tool into the axial flow channel 321, and when the installation tool is rotated, the core body 32 can be dismounted through the installation tool as long as the installation tool and the core body 32 are not rotated relatively, so that the specific arrangement of the operation plane 324 is not limited, for example, only one operation plane 324 can be arranged, other positions of the axial flow channel 321 are arc-shaped surfaces, and the operation tool is correspondingly provided with a plane; or two oppositely arranged operation planes 324 are arranged, other positions of the axial flow channel 321 are arc-shaped surfaces, and the operation tool is correspondingly provided with two oppositely arranged planes.

In this embodiment, the number of the operation planes 324 is six, and the six operation planes 324 are sequentially connected and arranged along the circumferential direction of the axial flow channel 321 and enclose to form an inner hexagonal structure, at this time, the operation tool can adopt a common inner hexagonal wrench, no special operation tool is required to be set, and the universality is good.

Of course, in this embodiment, a key slot may be further disposed on the inner wall of the axial flow channel 321, and a protruding key is disposed on the outer wall of the operating tool, so that the key can be just located in the key slot after the operating tool is inserted into the axial flow channel 321, thereby driving the core 32 to rotate through the operating tool.

As shown in fig. 3, the outer peripheral wall of the housing 31 is further provided with an annular stopper 313 radially outwardly thereof, and the annular stopper 313 can abut against the front end surface of the mount 2 when the housing 31 is mounted in the mount 2 of the head. The annular stop 313 enables limiting the mounting of the nozzle 3. Specifically, as shown in fig. 1, an annular gasket 35 is interposed between the annular stopper 313 and the front end surface of the mount 2 to seal the both from the circumferential direction, avoiding the occurrence of leakage therein.

The housing 31 and the mounting hole 21 of the mounting seat 2 are also connected by screw-fit, that is, the inner wall of the mounting cavity of the housing 31 is provided with an internal screw thread for connection and fixation with the core 32, and the outer peripheral wall of the housing 31 is provided with an external screw thread for connection and fixation with the mounting seat 2.

Specifically, during installation, the nozzle 3 is assembled into a whole, then the nozzle 3 is integrally installed on the installation seat 2 of the spray head, the assembly of the nozzle 3 comprises sleeving the adjusting pad 34 outside the core 32 from front to back until the adjusting pad 34 is abutted against the limiting structure 323, then inserting the core 32 into the installation cavity from the rear end opening forward, rotating the core 32 through an operation tool to enable the core 32 to be in threaded fit with the shell 31, in the process, gradually moving the core 32 axially to the front side of the installation cavity until the limiting structure 323 and the rear end of the shell 31 clamp the adjusting pad 34, at this time, the core 32 is installed in place, the assembly of the nozzle 3 is completed, then the shell 31 of the nozzle 3 is installed into the installation seat 2 from front to back, and specifically, the shell 31 is rotated relative to the installation seat 2 until the annular blocking member 313 at the front end of the shell 31 can clamp the annular sealing pad 35 with the end face of the installation seat 2.

After the mount 2 is fixedly mounted in the spout 1, as shown in fig. 1, the through hole 12 and the first end 22 of the mount 2 are machined together so that the hole diameter of the through hole 12 becomes larger than the maximum outer diameter of the nozzle 3, and simultaneously a counterbore is formed in the first end 22, the hole diameters of the through hole 12 and the counterbore are the same and both are coaxial with the mounting hole 21, and then the nozzle 3 is mounted so that the annular stopper 313 of the nozzle 3 can clamp the annular seal 35 with the end face 25 of the counterbore.

In this embodiment, the housing 31, the end cap 311 and the annular stopper 313 are integrally formed, or may be formed independently, so that the overall structure can be simplified, and the processing technology can be simplified, and the sealing performance and stability can be ensured.

The embodiment of the application also provides a preparation method of the spray head of the spraying equipment, as shown in fig. 5, the preparation method of the spray head comprises the following steps:

s1: a through hole 12 is formed in the side wall of the spray pipe 1;

s2: the mounting seat 2 is inserted into the spray pipe 1 from one end of the spray pipe 1, the first end 22 of the mounting seat 2 and the inner wall of the spray pipe 1 are welded and fixed by welding, and the included angle between the axis of the mounting hole 21 of the mounting seat 2 and the axis of the spray pipe 1 is larger than 0 degrees.

That is, the mounting base 2 is formed with the mounting hole 21 before being mounted to the nozzle 1, so that the processing process can be simplified. In step S1, the through hole 12 formed in the side wall of the nozzle 1 can be used for installing and positioning the mounting seat 2, so as to ensure the accuracy of the installation position of the mounting seat 2, and further ensure that the post-nozzle 3 can be installed smoothly. After the mounting seat 2 is mounted in the spray pipe 1 and the position is found, the mounting seat 2 and the spray pipe 1 are fixed through welding, so that the mounting seat 2 and the spray pipe 1 form a whole.

Specifically, the mounting seat 2 includes a first end 22 and a second end 23, where the first end 22 is bonded to and welded to the inner wall of the nozzle 1, and the second end 23 forms a channel 5 with the inner wall of the other side of the nozzle 1.

S3: the nozzle 3 is passed through the through hole 12 and fixed with the mounting hole 21.

Specifically, the nozzle 3 can be fixed to the mounting hole 21 through screw-fit, so that the operation is convenient, and the nozzle 3 can be disassembled and assembled during the later maintenance.

S4: at the end of the spout 1 remote from the fluid inlet 11 is sealed by a seal 4.

At this time, the nozzle 1 has only one fluid inlet 11, the channel 5 is formed inside the nozzle 1, and the nozzle 3 can atomize and spray the fluid, so as to form an outlet, and the channel 5 is communicated between the fluid inlet 11 and the nozzle 3.

The side wall of the spray pipe 1 is provided with a through hole 12, the spray pipe 1 is equivalent to a three-way pipe, the axis of the through hole 12 is perpendicular to the axis of the spray pipe 1, after the nozzle 3 is installed in the installation hole 21, the axis of the nozzle 3 is collinear with the axis of the installation hole 21, therefore, after the installation seat 2 is fixedly installed in the spray pipe 1, the included angle between the axis of the installation hole 21 and the axis of the spray pipe 1 is larger than 0 DEG, namely, the included angle between the axis of the installation hole 21 and the axis of the through hole 12 is smaller than 90 DEG, therefore, when the installation seat 2 is installed, the included angle between the axis of the installation hole 21 and the axis of the through hole 12 is controlled, namely, the included angle between the axis AA 'of the nozzle 3 and the axis BB' of the spray head is controlled, and particularly, the included angle between the axis AA 'of the nozzle 3 and the axis BB' of the spray head is preferably 45 DEG-90 deg. When the inner wall of the area to be sprayed is sprayed through the spraying equipment with the spray head, the position of the spray head is not required to be adjusted at a large angle, and the spray head only needs to be moved and rotated, so that the space requirement in the area to be sprayed is reduced while the inner wall of the area to be sprayed is ensured to be effectively sprayed.

Further, as shown in fig. 6, between steps S2 and S3, step S21 is further included: the through hole 12 and the first end 22 are machined to form a counterbore in the first end 22 and to provide a bore diameter of the through hole 12 that is greater than the maximum outer diameter of the nozzle 3.

That is, in step S1, the aperture of the through hole 12 machined in the side wall of the nozzle 1 may be relatively small, and after the mount 2 is mounted and fixed in the nozzle 1, the through hole 12 and the top end of the mounting hole 21 are machined together so that the aperture of the through hole 12 becomes large and a counterbore is formed at the first end 22, it will be understood that the through hole 12 and the counterbore have the same aperture and are coaxial with the mounting hole 21 at this time, then in step S3, the nozzle 3 is passed through the through hole 12 and fixed with the mounting hole 21 so that the annular stopper 313 of the nozzle 3 can abut against the end face 25 of the counterbore, indicating that the nozzle 3 is mounted in place, and in order to ensure sealing performance, an annular packing 35 is further interposed between the annular stopper 313 and the end face 25 of the counterbore.

Of course, in the present embodiment, the aperture of the through hole 12 may be directly set to be large in step S1, but such setting is disadvantageous in positioning the mount 2 through the through hole 12.

The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application and are intended to be comprehended within the scope of the present application.

Claims (14)

1. The spray head of the spraying equipment is characterized by comprising a spray pipe (1), a mounting seat (2) and a spray nozzle (3), wherein the mounting seat (2) is fixedly arranged in the spray pipe (1) and is used for mounting the spray nozzle (3);

the front end of the spray pipe (1) is provided with a sealing element (4), and the rear end of the spray pipe (1) is provided with a fluid inlet (11);

the side wall of spray tube (1) is equipped with through-hole (12), first tip (22) of mount pad (2) with the inner wall of spray tube (1) is followed the circumference of through-hole (12) is fixed, second tip (23) of mount pad (2) with form passageway (5) between the inner wall of spray tube (1), passageway (5) communicate in fluid entry (11) with between nozzle (3), the axis of nozzle (3) with contained angle between the axis of spray tube (1) is greater than 0.

2. Spray head of a spraying device according to claim 1, characterized in that the mounting seat (2) is provided with a mounting hole (21), the mounting hole (21) being a threaded hole, the nozzle (3) being able to pass through the through hole (12) and to be screw-fitted with the mounting hole (21).

3. Spray head of a spraying device according to claim 1, characterized in that the first end (22) can be attached to the inner wall of the spray tube (1) and fixed by welding.

4. A spray head of a spraying device according to any one of claims 1-3, characterized in that the second end (23) is further provided with a guide surface (24), the channel (5) formed between the guide surface (24) and the inner wall of the spray tube (1) tapering in the direction of fluid flow.

5. A spray head of a spraying device according to any one of claims 1-3, characterized in that the end of the seal (4) is provided with a guide surface (41).

6. A spray head of a spraying device according to any one of claims 1-3, characterized in that the angle between the axis of the nozzle (3) and the axis of the nozzle tube (1) is 45 ° -90 °.

7. A spray head of a spraying device according to any one of claims 1-3, characterized in that the spray nozzle (3) comprises a housing (31) and a core (32), the housing (31) is fixed with the mounting seat (2), a mounting cavity is arranged in the housing (31), an end cover (311) for blocking the mounting cavity is also arranged at the front end of the housing (31), and the end cover (311) is provided with a spray nozzle (312);

the core body (32) can be inserted into the mounting cavity from the rear end of the shell (31) and is fixed with the shell (31);

the core body (32) is provided with an axial flow passage (321), the front end side of the core body (32) is also provided with a radial flow passage (322), and an atomization gap (33) communicated with the nozzle (312) is formed between the front end of the core body (32) and the rear side wall surface of the end cover (311);

the rear end of the core body (32) is further provided with a limiting structure (323), an adjusting pad (34) is clamped between the limiting structure (323) and the rear end of the shell body (31), and the adjusting pad (34) can adjust the axial length of the core body (32) in the installation cavity so as to adjust the size of the atomization gap (33).

8. Spray head of a spraying device according to claim 7, characterized in that the number of radial flow channels (322) is at least three and is evenly arranged in the circumferential direction of the core (32).

9. Spray head of a spraying device according to claim 7, characterized in that the core (32) and the housing (31) are fixed by a screw fit.

10. Spray head of a spraying device according to claim 7, characterized in that the inner wall of the rear end of the axial flow channel (321) is provided with an operating plane (324), and an operating tool for dismounting the core (32) can be abutted against the operating plane (324) and drive the core (32) to rotate through the operating plane (324).

11. Spray head of a spraying device according to claim 7, characterized in that the outer circumferential wall of the housing (31) is further provided with an annular stop (313) radially outwards thereof, the housing (31) being mountable in the mounting seat (2), and that an annular sealing gasket (35) is further clamped between the annular stop (313) and the end face of the mounting seat (2).

12. A spray coating device comprising a spray head according to any one of claims 1-11.

13. A method of manufacturing a spray head for a spray apparatus, comprising the steps of:

s1: a through hole is formed in the side wall of the spray pipe;

s2: inserting an installation seat into a spray pipe from one end of the spray pipe, welding and fixing the first end of the installation seat and the inner wall of the spray pipe by welding, wherein an included angle between the axis of an installation hole of the installation seat and the axis of the spray pipe is larger than 0 degree;

s3: the nozzle penetrates through the through hole and is fixed with the mounting hole;

s4: the end of the spout remote from the fluid inlet is sealed by a seal.

14. The method of manufacturing a spray head of a spray apparatus as claimed in claim 13, wherein,

between steps S2 and S3, step S21 is further included:

machining the through hole and the first end to form a counterbore at the first end, and making the bore diameter of the through hole larger than the maximum outer diameter of the nozzle;

in step S3, the nozzle penetrates through the through hole and is fixed with the mounting hole, so that the annular blocking piece of the nozzle is abutted with the end face of the counter bore.

Images