CN221268579U

CN221268579U - Spray gun

Info

Publication number: CN221268579U
Application number: CN202323055269.3U
Authority: CN
Inventors: 赵康于
Original assignee: Yuhuan Kangyu Copper Industry Co ltd
Current assignee: Yuhuan Kangyu Copper Industry Co ltd
Priority date: 2023-11-10
Filing date: 2023-11-10
Publication date: 2024-07-05
Anticipated expiration: 2033-11-10

Abstract

The utility model provides a spray gun, and belongs to the technical field of bathrooms. It has solved the inconvenient and poor problem of wholeness of equipment. The spray gun comprises a body, a connecting piece, a water outlet and an upper end, wherein the body is tubular, the lower end of the connecting piece is provided with a water inlet, the lower end of the connecting piece is fixedly connected in the upper end of the body and is cylindrical, the water outlet is connected outside the upper end of the connecting piece, an operation shifting ring is sleeved outside the connecting piece and is propped against the upper end of the body, an arc-shaped limiting groove is formed in the side part of the connecting piece, a limiting block penetrating through the limiting groove is fixedly connected on the inner side of the operation shifting ring, the limiting groove is positioned at the middle lower part of the connecting piece, a yielding groove communicated with the limiting groove is formed in the side part of the connecting piece, the groove width of the yielding groove along the arc direction of the limiting groove is smaller than that of the limiting groove, the groove width of the yielding groove along the arc direction of the limiting groove is larger than that of the limiting block, the yielding groove penetrates through the upper end of the connecting piece, and the upper end of the connecting piece is in threaded connection with the lower end of the water outlet and the lower end of the water outlet is propped against the upper side surface of the operation shifting ring. It has advantages of good integrity and convenient assembly.

Description

Spray gun

Technical Field

The utility model belongs to the technical field of bathroom, and relates to a spray gun.

Background

The conventional spray gun is push-type, and the operation force for pushing the button becomes great under the condition of high water pressure, so that the operation is very laborious. In order to solve the problem, an adjustable spray gun with the patent application number 202110063325.4 is proposed, which comprises a main body, wherein a water inlet channel and a water outlet channel are arranged on the main body, and a valve core is sleeved on the main body to control the water channel of the main body to be opened and closed; the water outlet piece is connected with the valve core and is provided with a water outlet; the valve core comprises a fixed part and a movable part, the movable part is connected with a control part, the fixed part is provided with at least two conducting ports, the movable part is provided with a communication port, and the control part controls the rotation of the brake part so that the communication port is switched between being overlapped with different conducting ports or not being overlapped with the conducting ports, and the waterway of the main body is opened or closed; the fixed part comprises a shell and a fixed part fixed on the shell, the conducting port is arranged on the fixed part, the movable part comprises a movable plate and a shaft rod connected with the movable plate, the communication port is arranged on the movable plate, the movable plate is sleeved in the shell and matched with the fixed part, the shaft rod extends out of the main body and is in movable fit with the water outlet part, a matched part matched with the control part is arranged on the shaft rod, the control part is matched with the matched part to drive the shaft rod to drive the movable plate to rotate, the fixed part is fixed on the main body through a fixing device, and the water outlet part is fixedly connected with the main body through a connecting part device. The adjustable spray gun can control the opening and closing of the valve core and change the size of water discharged by the spray gun through the control piece, the control piece rotates to push the moving piece to rotate, the communication port on the moving piece is not overlapped with the communication port on the fixed piece, the waterway is closed, and the waterway is overlapped with different communication ports, so that the size of the waterway is changed. The switch state is changed through rotation, the spray gun is not opposed to the water pressure, and the spray gun is labor-saving, light and free to open and close even under the high water pressure state.

In the second embodiment of the adjustable spray gun, the connecting device comprises a fixed joint and a clamping ring, the fixed joint is fixedly connected with the main body, a clamping groove is formed in the water outlet piece, a clamping portion matched with the clamping groove is arranged on the fixed joint, and the clamping groove is matched with the clamping portion in a clamping manner through the clamping ring so that the water outlet piece is connected with the fixed joint. The fixed joint is provided with an avoidance part, the control part is provided with a control part, a connecting part and a matching part, the matching part is matched with the matching part, the control part is connected with the matching part through the connecting part, the connecting part is arranged in the avoidance part and can move in the avoidance part, and the width of the avoidance part is the adjusting stroke of the control part. It can be seen from fig. 5 and 6 of the specification that the control member is sleeved outside the fixed joint, the outer side of the upper end of the fixed joint is provided with an annular protruding part, and the control member is fixed between the annular protruding part and the upper end of the main body along the axial direction of the main body. In addition, after the assembly is completed, the annular protruding part of the fixed joint is exposed to the outside of the spray gun, so that the integrity of the spray gun is poor.

Disclosure of utility model

The utility model aims to solve the problems of the prior art, and provides a spray gun which solves the problems of inconvenient assembly and poor integrity.

The aim of the utility model can be achieved by the following technical scheme:

the spray gun comprises a body, a connecting piece, a water outlet piece and an operating shifting ring, wherein the body is tubular, the lower end of the connecting piece is provided with a water inlet, the connecting piece is fixedly connected in the upper end of the body and is cylindrical, the water outlet piece is connected outside the upper end of the connecting piece, the operating shifting ring is sleeved outside the connecting piece and is propped against the upper end of the body, an arc-shaped limiting groove is formed in the side part of the connecting piece, a limiting block which penetrates through the limiting groove and can move along the operating shifting ring when the operating shifting ring rotates is fixedly connected on the inner side of the operating shifting ring.

When the connecting piece is assembled, the lower end of the connecting piece is fixedly connected into the upper end of the body, and the rest positions of the connecting piece are exposed out of the upper end of the body. Then, the operation shifting ring is aligned with the position of the upper end part of the connecting piece, penetrated by the abdication groove, from top to bottom in a sleeved mode, the stopper penetrates through the abdication groove and enters the limit groove, the operation shifting ring abuts against the upper end part of the body, and then the water outlet piece is connected with the outside of the upper end part of the connecting piece in a threaded mode and abuts against the upper side face of the operation shifting ring. Therefore, the operation shifting ring is limited at the upper end part of the body along the axial direction of the body directly by the water outlet piece, the operation shifting ring is not required to be limited by matching with the connecting piece, the connecting piece is completely hidden by the water outlet piece, the operation shifting ring and the body from the outside, that is, the existence of the connecting piece can not be seen from the outside of the spray gun, so that the integrity of the spray gun is better, and the outside is more concise. Simultaneously, this kind of structure that this spray gun adopted for the operation shifting ring is no longer required to overlap the connecting piece together and is installed fixedly on the body simultaneously, can install the connecting piece earlier and install the operation shifting ring again, and the production personnel operation is got up more conveniently, has reduced the equipment degree of difficulty.

In this spray gun, will step down the groove along the groove width of spacing groove circular arc direction and be less than the spacing groove, mainly in order to ensure that the upper end of connecting piece can have enough entity part to set up the external screw thread, make this spray gun can adopt the upper end threaded connection of connecting piece to give the connecting piece upper end by step down the groove penetration position and shelter from in the play water spare mode.

In the spray gun, the lower end of the water outlet piece is provided with a water inlet part and an annular connecting part, the water inlet part is positioned at the inner side of the annular connecting part, and the upper end part of the connecting piece is in threaded connection with the annular connecting part.

The water inlet part is used for realizing water inlet of the water outlet piece, and is arranged at the inner side of the annular connecting part, so that normal water inlet of the water outlet piece is not influenced, and meanwhile, the upper end part of the connecting piece is in threaded connection in the annular connecting part to be matched with the body to fix the operation dial ring in the axial direction.

In the spray gun, the body is in a circular tube shape, and the peripheral wall of the annular connecting part, the peripheral wall of the upper end of the body and the peripheral wall of the operating dial ring are flush.

The annular connecting part is annular, the body is circular pipe-shaped, and the operation shifting ring is annular, so that the peripheral wall of the annular connecting part, the peripheral wall of the upper end of the body and the peripheral wall of the operation shifting ring are flush, and the integrity of the spray gun is better.

In the spray gun, the valve core is fixed in the spray gun, the valve core comprises an outer sleeve, and a static valve plate, a movable valve plate and a valve rod which are sequentially arranged in the outer sleeve from bottom to top, wherein the static valve plate is provided with a water passing hole along the vertical direction, the movable valve plate is provided with a water guide hole along the vertical direction, the lower end of the valve rod is circumferentially fixed with the movable valve plate, the valve rod is axially provided with a water guide channel communicated with the water guide hole, the movable valve plate rotates to enable the water guide hole to be communicated with the water passing hole or misplaced, the end part of the limiting block, which is close to the center line of the operation dial ring, is fixedly connected with a linkage sleeve, the linkage sleeve is positioned on the inner side of the connecting piece, the upper end of the valve rod is positioned in the linkage sleeve and circumferentially fixed with the two, and the water inlet part is columnar and the lower end of the water inlet part is positioned in the linkage sleeve.

The operating shifting ring is shifted, and the operating shifting ring can drive the valve rod to rotate through the linkage sleeve, so that the moving valve plate is controlled to rotate, and the water guide hole is communicated with the water passing hole on the static valve plate or misplaced with the water passing hole, so that the spray gun is opened or closed.

In the spray gun, the valve rod is matched with the linkage sleeve through the spline, the sealing ring is arranged on the outer side of the water inlet part, and the sealing ring abuts against the inner wall of the linkage sleeve to form sealing.

In the spray gun, the lower end of the connecting piece is in threaded connection with the upper end of the body, the inner side of the upper port of the body is provided with an abutting step, the outer peripheral side of the connecting piece, which is close to the lower end, is convexly provided with a flange, and the flange abuts against the abutting step.

The threaded connection depth of the lower end of the connecting piece in the body can be controlled through the matching of the flange and the abutting step, and the limit block is completely inserted into the limit groove while the operation shifting ring abuts against the upper end of the body.

In the spray gun, the upper side surface of the flange is flush with the upper end surface of the body, and the lower side surface of the operating dial ring simultaneously abuts against the upper side surface of the flange and the upper end surface of the body.

Compared with the prior art, the side part of the connecting piece is provided with the lower end which is communicated with the limiting groove and penetrates through the yielding groove at the upper end of the connecting piece, the groove width of the yielding groove along the arc direction of the limiting groove is larger than the width of the limiting block, the upper end of the connecting piece is in threaded connection with the lower end of the water outlet piece and the lower end of the water outlet piece abuts against the upper side face of the operation shifting ring, so that the operation shifting ring can be directly limited at the upper end of the body by the water outlet piece along the axial direction of the body, the operation shifting ring is not required to be limited by the connecting piece, the connecting piece is completely hidden by the water outlet piece, the operation shifting ring and the body, that is, the existence of the connecting piece can not be seen from the outside of the spray gun, and the integrity of the spray gun is better and the outside is more concise.

Simultaneously, this kind of structure that this spray gun adopted for the operation shifting ring is no longer required to overlap the connecting piece together and is installed fixedly on the body simultaneously, can install the connecting piece earlier and install the operation shifting ring again, and the production personnel operation is got up more conveniently, has reduced the equipment degree of difficulty.

Drawings

Fig. 1 is a schematic perspective view of the spray gun.

Fig. 2 is another angular perspective view of the present spray gun.

Fig. 3 is a cross-sectional view of the present spray gun.

Fig. 4 is a partial enlarged view at a in fig. 3.

Fig. 5 is an exploded view of the operating dial and the attachment.

Fig. 6 is a schematic structural view of the connector.

In the figure, 1, a body; 1a, a main body; 1a1, abutting against the step; 1a2, a convex ring; 1a3, a partition; 1a31, an annular mounting portion; 1b, a water guide pipe; 1c, water inlet head; 1c1, a water inlet; 2. a water outlet member; 2a, a housing; 2a1, a ring-shaped connection portion; 2a2, a water inlet part; 2a3, mating portion; 2b, a water outlet head; 2b1, a face cover; 2b11, water outlet holes; 2b2, connectors; 2c, a water passing cavity; 3. a connecting piece; 3a, a limit groove; 3b, a yielding groove; 3c, flanges; 4. operating the shifting ring; 4a, an operation part; 5. a limiting block; 6. a valve core; 6a, a jacket; 6b, static valve plate; 6b1, water passing holes; 6c, a movable valve plate; 6c1, a water guide hole; 6d, valve rod; 6d1, a water guide channel; 6e, a sealing gasket; 7. and a linkage sleeve.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1-6, the spray gun comprises a body 1 which is circular tube-shaped and has a water inlet 1c1 at the lower end, a connecting piece 3 which is fixedly connected in the upper end of the body 1 and is cylindrical, and a water outlet piece 2 which is connected outside the upper end of the connecting piece 3, wherein an operating dial ring 4 is arranged on an outer sleeve 6a of the connecting piece 3. The side of the connecting piece 3 is provided with a circular arc-shaped limiting groove 3a, the inner side of the operation shifting ring 4 is fixedly connected with a limiting block 5 which penetrates through the limiting groove 3a and can move along the operation shifting ring 4 when rotating, and the rotating angle of the operation shifting ring 4 can be limited by the movement of the limiting block 5 in the limiting groove 3 a. The valve core 6 is fixed in the body 1, the end part of the limiting block 5, which is close to the center line of the operation shifting ring 4, is fixedly connected with the linkage sleeve 7, the linkage sleeve 7 is positioned on the inner side of the connecting piece 3, the valve core 6 is connected with the linkage sleeve 7, and the valve core 6 can be driven to act when the operation shifting ring 4 rotates so that the water inlet 1c1 is communicated or blocked with the water outlet piece 2. The spacing groove 3a is arranged at the middle lower part of the connecting piece 3, the side part of the connecting piece 3 is also provided with a yielding groove 3b with the lower end communicated with the spacing groove 3a, the yielding groove 3b penetrates through the upper end part of the connecting piece 3, the groove width of the yielding groove 3b along the circular arc direction of the spacing groove 3a is smaller than that of the spacing groove 3a, the groove width of the yielding groove 3b along the circular arc direction of the spacing groove 3a is larger than that of the limiting block 5, the operation shifting ring 4 abuts against the upper end part of the body 1, the upper end part of the connecting piece 3 is in threaded connection with the lower end of the water outlet piece 2, and the lower end of the water outlet piece 2 abuts against the upper side surface of the operation shifting ring 4. Specifically, the lower end of the water outlet member 2 has an annular connecting portion 2a1, the upper end portion of the connecting member 3 is screwed into the annular connecting portion 2a1, and the outer peripheral wall of the annular connecting portion 2a1, the outer peripheral wall of the upper end of the body 1, and the outer peripheral wall of the operating dial ring 4 are flush. The lower extreme threaded connection of connecting piece 3 is in the upper end of body 1, has in the upper port of body 1 and supports and lean on step 1a1, and the periphery side protrusion that connecting piece 3 was close to lower extreme position department is provided with flange 3c, and flange 3c supports and leans on step 1a1 department, and the up side of flange 3c flushes with the up end of body 1, and the downside of operating dial ring 4 supports simultaneously and leans on flange 3c up side and the up end of body 1. An operation portion 4a is provided to protrude from the outer peripheral side of the operation dial 4.

During assembly, the valve core 6 is fixed in the body 1, then the lower end of the connecting piece 3 is connected into the upper end of the body 1 in a threaded mode, and the rest positions of the connecting piece 3 are exposed out of the upper end of the body 1. Then, the operating dial ring is sleeved outside the connecting piece 3 from top to bottom at the position where the upper end of the connecting piece 3 is penetrated by the abdication groove 3b by aligning the limiting block 5, the limiting block 5 penetrates through the abdication groove 3b and enters the limiting groove 3a, and the operating dial ring 4 abuts against the upper end of the body 1. Then, the annular connecting portion 2a1 of the water outlet member 2 is screwed to the outside of the upper end portion of the connecting member 3 and abuts against the upper side surface of the operating dial 4. Therefore, the operation shifting ring 4 is limited at the upper end part of the body 1 along the axial direction of the body 1 by the water outlet piece 2 directly, the operation shifting ring 4 is not required to be limited by matching with the connecting piece 3, the connecting piece 3 is completely hidden by the water outlet piece 2, the operation shifting ring 4 and the body 1 from the outside, and the integrity of the spray gun is better and the external structure is simpler. Meanwhile, by adopting the structure, the operating shifting ring 4 does not need to be sleeved with the connecting piece 3 and is installed and fixed on the body 1, the connecting piece 3 can be installed first, then the operating shifting ring 4 is installed, the operation of production personnel is more convenient, and the assembly difficulty is reduced.

As shown in fig. 3, the valve core 6 includes an outer sleeve 6a, and a static valve plate 6b, a dynamic valve plate 6c and a valve rod 6d sequentially disposed in the outer sleeve 6a from bottom to top, where the lower end of the outer sleeve 6a is opened and fixed with a sealing gasket 6e, and the static valve plate 6b abuts against the sealing gasket 6 e. The static valve plate 6b is provided with a water passing hole 6b1 along the vertical direction, the movable valve plate 6c is provided with a water guiding hole 6c1 along the vertical direction, the lower end of the valve rod 6d is circumferentially fixed with the movable valve plate 6c, the valve rod 6d is axially provided with a water guiding channel 6d1 communicated with the water guiding hole 6c1, the valve rod 6d and the movable valve plate 6c are particularly circumferentially fixed in a concave-convex mode, and the rotation of the movable valve plate 6c can enable the water guiding hole 6c1 to be communicated with the water passing hole 6b1 or to be staggered. The upper end of the valve rod 6d is positioned in the linkage sleeve 7, the upper end and the valve rod are circumferentially fixed, the lower end of the water outlet piece 2 is provided with a water inlet part 2a2, the water inlet part 2a2 is columnar, and the lower end of the water inlet part 2a2 is positioned in the linkage sleeve 7. Specifically, the valve rod 6d is matched with the linkage sleeve 7 through a spline, the lower end of the water outlet piece 2 is further provided with a columnar water inlet part 2a2, the water inlet part 2a2 is positioned on the inner side of the annular connecting part 2a1, the lower end of the water inlet part 2a2 is positioned in the upper end of the linkage sleeve 7, a sealing ring is arranged on the outer side of the water inlet part 2a2, and the sealing ring abuts against the inner wall of the linkage sleeve 7 to form a seal.

When the spray gun needs to discharge water, a user toggles the dial ring 4 to drive the valve rod 6d to rotate, the valve rod 6d can control the movable valve plate 6c to rotate until the water guide hole 6c1 is communicated with the water discharge hole 6b1 on the static valve plate 6b, and therefore water flowing in from the water inlet 1c1 enters the water outlet piece 2 through the water guide hole 6c1, the water discharge hole 6b1, the water guide channel 6d1 and the water inlet part 2a2 in sequence, and finally water is discharged outwards from the water outlet piece 2. When the water outlet device is not needed to be used, the user reversely dials the dial ring 4 to drive the valve rod 6d to rotate, the valve rod 6d can control the movable valve plate 6c to rotate until the water guide hole 6c1 is staggered with the water through hole 6b1 on the static valve plate 6b, and thus water flowing in from the water inlet 1c1 is blocked at the water guide hole 6c1, so that no water enters the water outlet piece 2.

In this embodiment, as shown in fig. 3, the body 1 includes a hollow tubular main body 1a, an annular partition 1a3 is provided in the middle of the inner side of the main body 1a, a convex ring 1a2 is provided in the upper inner side of the main body 1a, a jacket 6a of the valve core 6 is screwed with the convex ring 1a2, and a sealing gasket 6e abuts against the upper side surface of the partition 1a 3. The lower side of the partition part 1a3 is provided with an annular mounting part 1a31, the body 1 further comprises a water guide pipe 1b with an upper end screwed into the annular mounting part 1a31 and a water inlet head 1c screwed into the lower end of the water guide pipe 1b and closing the lower port of the body 1a, and the water inlet 1c1 is arranged on the water inlet head 1 c. This arrangement allows the overall gun to be lighter in weight and lower in cost.

Further, as shown in fig. 1, 2 and 3, the water outlet member 2 includes a casing 2 with two open ends and a water outlet head 2b disposed in the casing 2, a center line of the casing 2 is perpendicular to a center line of the body 1, and the water inlet portion 2a2 and the annular connecting portion 2a1 are integrally and fixedly connected to a lower side of the casing 2. The inner side of one end of the shell 2 is fixedly connected with a horn-shaped matching part 2a3, the horn mouth of the matching part 2a3 faces away from the other end of the shell 2, the water outlet head 2b is provided with a ring-shaped surface cover 2b1 embedded in the other end of the shell 2 and a connector 2b2 arranged from the central hole of the surface cover 2b1 towards the matching part 2a3, and the connector 2b2 is in threaded connection with the matching part 2a 3. The water passing cavity 2c is defined among the surface cover 2b1, the connector 2b2, the matching part 2a3 and the shell 2, a plurality of water outlet holes 2b11 communicated with the water passing cavity 2c are formed in the surface cover 2b1, the water inlet part 2a2 is provided with an inner hole, and the inner hole of the water inlet part 2a2 is communicated with the water passing cavity 2c.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims

1. The spray gun comprises a body (1) with a tubular water inlet at the lower end, a connecting piece (3) which is fixedly connected in the upper end of the body (1) and is in a tubular shape, and a water outlet piece (2) which is connected outside the upper end of the connecting piece (3), wherein an operation shifting ring (4) is arranged on an outer sleeve (6 a) of the connecting piece (3), the operation shifting ring (4) is abutted against the upper end part of the body (1), an arc-shaped limiting groove (3 a) is arranged on the side part of the connecting piece (3), a limiting block (5) which penetrates through the limiting groove (3 a) and can move along the operation shifting ring (4) when rotating is fixedly connected on the inner side of the operation shifting ring (4), and the spray gun is characterized in that the limiting groove (3 a) is positioned at the middle lower part of the connecting piece (3), the side part of the connecting piece (3) is also provided with an abdicating groove (3 b) which is communicated with the limiting groove (3 a), the abdicating groove (3 b) along the arc direction of the limiting groove (3 a) is smaller than the limiting groove (3 a), and the abdicating groove (3 b) is abutted against the upper end part of the connecting piece (3 b) along the arc direction of the limiting groove (3 a) and the arc-shaped limiting groove (3 a) is larger than the arc direction, and the upper end part of the limiting piece (3 b) is abutted against the upper end of the connecting piece (3).

2. The spray gun according to claim 1, wherein the lower end of the water outlet member (2) is provided with a water inlet portion (2 a 2) and an annular connecting portion (2 a 1), the water inlet portion (2 a 2) is positioned inside the annular connecting portion (2 a 1), and the upper end portion of the connecting member (3) is in threaded connection with the annular connecting portion (2 a 1).

3. The spray gun according to claim 2, wherein the body (1) is circular tube-shaped, and the peripheral wall of the annular connecting part (2 a 1), the peripheral wall of the upper end of the body (1) and the peripheral wall of the operating dial ring (4) are flush.

4. The spray gun according to claim 2, wherein the valve core (6) is fixed in the body (1), the valve core (6) comprises an outer sleeve (6 a) and a static valve plate (6 b), a movable valve plate (6 c) and a valve rod (6 d) which are sequentially arranged in the outer sleeve (6 a) from bottom to top, the static valve plate (6 b) is provided with a water through hole (6 b 1) along the vertical direction, the movable valve plate (6 c) is provided with a water guide hole (6 c 1) along the vertical direction, the lower end of the valve rod (6 d) is circumferentially fixed with the movable valve plate (6 c) and the valve rod (6 d) is axially provided with a water guide channel (6 d 1) which is communicated with the water guide hole (6 c 1), the movable valve plate (6 c) can enable the water guide hole (6 c 1) to be communicated with or misplaced with the water through hole (6 b 1), the end of the limiting block (5) close to the central line of the operation dial ring (4) is fixedly connected with the linkage sleeve (7), the linkage sleeve (7) is located on the inner side of the connecting piece (3), the upper end of the valve rod (6 d) is located in the linkage sleeve (7) and the upper end is circumferentially fixed with the linkage sleeve (7) and the lower end (2 a) is located in the water inlet part (2 a) is located at the water inlet part (2).

5. The spray gun according to claim 4, wherein the valve rod (6 d) is matched with the linkage sleeve (7) through a spline, a sealing ring is arranged on the outer side of the water inlet part (2 a 2), and the sealing ring is abutted against the inner wall of the linkage sleeve (7) to form a seal.

6. Spray gun according to claim 1 or 2 or 3 or 4 or 5, characterized in that the lower end of the connecting piece (3) is screwed into the upper end of the body (1), the inner side of the upper port of the body (1) is provided with an abutment step (1 a 1), the outer peripheral side of the connecting piece (3) near the lower end is convexly provided with a flange (3 c), and the flange (3 c) abuts against the abutment step (1 a 1).

7. The spray gun according to claim 6, wherein the upper side surface of the flange (3 c) is flush with the upper end surface of the body (1), and the lower side surface of the operating dial ring (4) simultaneously abuts against the upper side surface of the flange (3 c) and the upper end surface of the body (1).