CN212856259U

CN212856259U - Spray gun with double sealing structure

Info

Publication number: CN212856259U
Application number: CN202020808235.4U
Authority: CN
Inventors: 施瑞法
Original assignee: Yuyao Ruida Daily Necessities Co ltd
Current assignee: Yuyao Ruida Daily Necessities Co ltd
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2021-04-02
Anticipated expiration: 2030-05-15

Abstract

The utility model relates to a spray gun field discloses spray gun with double seal structure, it includes shower nozzle casing (1), install the piston pipe subassembly that draws water in shower nozzle casing (1), the piston pipe subassembly that draws water includes base (2) that communicate each other, piston seal pipe (3) and movable nozzle pipe (4), piston chamber (300) between movable nozzle pipe (4) promote piston seal pipe (3) and compression piston seal pipe (3) and base (2) right, be equipped with on piston seal pipe (3) all with base (2) inner wall seal complex first sealing washer (301) and second sealing washer (302), first sealing washer (301) and second sealing washer (302) set up relatively and form annular water storage chamber (33) with base (2) inner wall. The utility model discloses a multiple sealing ring structure has effectively guaranteed the seal, and the setting of first pipe of cooperation and second pipe is conveniently dismantled and is assembled.

Description

Spray gun with double sealing structure

Technical Field

The utility model relates to a spray gun field has especially related to spray gun with double seal structure.

Background

The application of the liquid pressure pump in daily life is very extensive, and bottled liquid articles such as cosmetics class articles for use, insect repellant all use the liquid pressure pump technique, and the liquid pressure pump technique is more convenient, high-efficient compared with traditional bottle opening mode.

Spray guns are a very common and commonly used hydraulic pumping tool, which generally includes a gun body, a piston rod, and a trigger, which are used in conjunction with a liquid container. The main working principle is that the internal pressure of the liquid container is increased by utilizing the internal pressure of the piston through the compression space, so that the liquid in the liquid container is pressed out. However, although the conventional hydraulic pump tool can discharge the liquid, it is still deficient in the aspects of the overall sealing performance, the rapid flow breaking capability, the insulating effect, and the like.

At present, the invention with patent number 201280077187.4 has the defects of poor sealing performance and difficult disassembly.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the shortcoming that sealing performance is not good among the prior art, difficult dismantlement, provide the spray gun with dual seal structure.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve:

the spray gun with double sealing structure comprises a spray head shell, a water inlet channel is arranged on the spray head shell, a water pumping piston pipe assembly is arranged in the spray head shell, the water pumping piston pipe assembly comprises a base, a piston sealing pipe and a movable nozzle pipe which are mutually communicated, the base is fixedly arranged on the spray head shell and is communicated with the water inlet channel, the piston sealing pipe is arranged and inserted in the base, the movable nozzle pipe pushes the piston sealing pipe rightwards and compresses a piston cavity between the piston sealing pipe and the base, a first sealing ring and a second sealing ring which are matched with the inner wall of the base in a sealing mode are arranged on the piston sealing pipe, the water spraying direction is defined to be the positive direction, the first sealing ring extends along the reverse direction on the outer wall of the piston sealing pipe and is expanded outwards to be in contact with the inner wall of the base, the second sealing ring extends along the positive direction on the outer wall of the piston sealing pipe and is expanded outwards to be in contact with the inner wall of the base, and the first sealing ring and the second sealing ring are arranged oppositely and form an annular water storage cavity with the inner wall of the base.

Preferably, the piston sealing pipe comprises a first pipe and a second pipe, the first pipe is sleeved outside the second pipe and communicated with the second pipe, the first sealing ring is positioned at the right end of the first pipe, and the second sealing ring is positioned on the second pipe.

Preferably, a convex ring is arranged at the left end of the first pipe, a groove matched with the convex ring is formed in the movable nozzle pipe, a piston cavity communicated with the first pipe is communicated with the inner part of the pipe body of the movable nozzle pipe, a gap between the first pipe and the movable nozzle pipe is defined as a movable cavity, and the first pipe slides left and right in the groove through the convex ring to realize size change of the movable cavity.

Preferably, the left end of the first pipe is provided with a frustum, the movable nozzle pipe is provided with a baffle ring, and the inner diameter of the baffle ring is smaller than the maximum diameter of the frustum.

Preferably, the second pipe is provided with a positioning boss extending rightwards, the base is internally provided with a positioning convex column matched with the positioning boss, and when the piston cavity is compressed, the positioning boss is driven to move rightwards and is in contact with the positioning convex column.

Preferably, the inner wall of the left end of the second pipe is provided with reinforcing ribs, and the reinforcing ribs are circumferentially distributed outside the positioning bosses.

Preferably, a third sealing ring which is in sealing fit with the inner wall of the base is arranged at the right end of the second pipe.

Preferably, the sprayer further comprises a trigger hinged on the sprayer housing, and the trigger pushes the movable nozzle pipe to move in the opposite direction and extrude the piston cavity.

The utility model discloses owing to adopted above technical scheme, have apparent technological effect: through multiple sealing ring structure, effectively guaranteed the leakproofness, the setting of cooperation first pipe and second pipe is conveniently dismantled and is assembled.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a sectional view of fig. 1.

Fig. 3 is a partially enlarged view of fig. 2.

The names of the parts indicated by the numerical references in the drawings are as follows: 1-shower nozzle casing, 2-base, 3-piston seal pipe, 4-movable nozzle pipe, 5-trigger, 6-spring, 11-inhalant canal, 21-location projection, 300-piston chamber, 301-first sealing washer, 302-second sealing washer, 31-first pipe, 311-bulge loop, 312-frustum, 32-second pipe, 321-location boss, 322-strengthening rib, 323-third sealing washer, 33-water storage chamber, 41-recess, 42-fender ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Example 1

A spray gun with a double-sealing structure comprises a spray head shell 1, a water inlet channel 11 is arranged on the spray head shell 1, a water pumping piston pipe assembly is arranged in the spray head shell 1 and comprises a base 2, a piston sealing pipe 3 and a movable nozzle pipe 4 which are mutually communicated, the base 2 is fixedly arranged on the spray head shell 1 and is communicated with the water inlet channel 11, the piston sealing pipe 3 is arranged and inserted in the base 2, the movable nozzle tube 3 pushes the piston sealing tube 3 rightwards and compresses a piston cavity 300 between the piston sealing tube 3 and the base 2, a spring 6 is arranged in the piston cavity 300 and pushes the piston sealing tube 3 to return through resilience force provided by the spring 6, one end of the spring 6 is contacted with the base 2, the other end is contacted with the movable nozzle tube 3, when the trigger 5 is released, the spring 6 pushes the movable nozzle tube 3 to the left and restores the piston chamber 300 to its original size.

Be equipped with on the piston seal pipe 3 all with the sealed complex first sealing washer 301 of 2 inner walls of base and second sealing washer 302, the definition water spray direction is the positive direction, first sealing washer 301 extends and outwards expands to contacting with 2 inner walls of base along the reverse direction on the 3 outer walls of piston seal pipe, second sealing washer 302 extends and outwards expands to contacting with 2 inner walls of base along the positive direction on the 3 outer walls of piston seal pipe, first sealing washer 301 and second sealing washer 302 set up relatively and form annular retaining chamber 33 with 2 inner walls of base, retaining chamber 33 can save the water of slight leakage, prevent to leak.

The piston seal tube 3 comprises a first tube 31 and a second tube 32, the first tube 31 is sleeved outside the second tube 32 and is communicated with the second tube 32, a first seal ring 301 is positioned at the right end of the first tube 31, and a second seal ring 302 is positioned on the second tube 32.

Through the dual setting of first sealing washer 301 and second sealing washer 302, effectively prevent that the water in the shower nozzle can not leak, prevent at piston chamber 300 at the in-process that the grow diminishes, keep the seal all the time, and the design of first pipe 31 and second pipe 32 can effectively make things convenient for the dismantlement of this product.

Example 2

The same as embodiment 1, except that the left end of the first pipe 31 is provided with a convex ring 311, the movable nozzle pipe 4 is provided with a groove 41 matched with the convex ring 311, the piston cavity 300 communicated with the first pipe 31 is communicated with the inside of the pipe body of the movable nozzle pipe 4, the gap between the first pipe 31 and the movable nozzle pipe 4 is defined as a movable cavity, and the first pipe 31 realizes the size change of the movable cavity by the left-right sliding of the convex ring 311 in the groove 41. When spraying water, the piston cavity 300 is squeezed to be small, water cannot be squeezed back into the spray bottle due to the action of the ball valve in the water inlet channel 11, so that the channel between the first pipe 31 and the movable nozzle pipe 4 is opened by the pressure in the piston cavity 300, the water spraying is smooth, when the water spraying is finished, the piston cavity 300 is enlarged and absorbs water under the action of the spring 6, the ball valve moves upwards to open the water inlet channel 11, the first pipe 31 is pushed by the spring 6 and is in close contact with the movable nozzle pipe 4 to close the channel between the first pipe 31 and the movable nozzle pipe 4, and therefore the water in the spray can is absorbed into the piston cavity 300.

The left end of the first pipe 31 is provided with a frustum 312, the movable nozzle pipe 4 is provided with a baffle ring 42, and the inner diameter of the baffle ring 42 is smaller than the maximum diameter of the frustum 312.

The second tube 32 is provided with a positioning boss 321 extending rightwards, the base 2 is provided with a positioning convex column 21 matched with the positioning boss 321, and when the piston cavity 300 is compressed, the positioning boss 321 is driven to move rightwards and is contacted with the positioning convex column 21.

The inner wall of the left end of the second pipe 32 is provided with a reinforcing rib 322, and the reinforcing rib 322 is circumferentially distributed outside the positioning boss 321. The reinforcing rib 322 also serves as a mounting positioning projection of the spring 6.

The right end of the second pipe 32 is provided with a third sealing ring 323 which is in sealing fit with the inner wall of the base 2. A third sealing ring 323 effectively seals between the second tube 32 and the base 2 and the lance tip housing 1.

Example 3

The same as embodiment 1, except that it further comprises a trigger 5 hinged on the head housing 1, the trigger 5 pushes the movable nozzle tube 4 to move in the opposite direction and to press the piston chamber 300.

Claims

1. Spray gun with double seal structure, including shower nozzle casing (1), its characterized in that: a water inlet channel (11) is arranged on a sprayer shell (1), a water pumping piston pipe assembly is installed in the sprayer shell (1), the water pumping piston pipe assembly comprises a base (2), a piston sealing pipe (3) and a movable nozzle pipe (4) which are communicated with each other, the base (2) is fixedly installed on the sprayer shell (1) and is communicated with the water inlet channel (11), the piston sealing pipe (3) is installed and inserted into the base (2), the movable nozzle pipe (4) pushes the piston sealing pipe (3) rightwards and compresses a piston cavity (300) between the piston sealing pipe (3) and the base (2), a spring (6) is installed in the piston cavity (300) and pushes the piston sealing pipe (3) to return through resilience force provided by the spring (6), restoring force of the piston sealing pipe (3) is provided with a first sealing ring (301) and a second sealing ring (302) which are hermetically matched with the inner wall of the base (2), the water spray direction is defined as the positive direction, and first sealing washer (301) extend and outwards expand to contact with base (2) inner wall along the reverse direction on piston seal pipe (3) outer wall, and second sealing washer (302) extend and outwards expand to contact with base (2) inner wall along the positive direction on piston seal pipe (3) outer wall, and first sealing washer (301) and second sealing washer (302) set up relatively and form annular retaining chamber (33) with base (2) inner wall.

2. The spray gun with a double seal structure of claim 1, wherein: the piston sealing pipe (3) comprises a first pipe (31) and a second pipe (32), the first pipe (31) is sleeved outside the second pipe (32) and communicated with the second pipe, the first sealing ring (301) is located at the right end of the first pipe (31), and the second sealing ring (302) is located on the second pipe (32).

3. The spray gun with a double seal structure of claim 2, wherein: the left end of the first pipe (31) is provided with a convex ring (311), and the movable nozzle pipe (4) is provided with a groove (41) matched with the convex ring (311).

4. The spray gun with a double seal structure of claim 2, wherein: the second pipe (32) is provided with a positioning boss (321) extending rightwards, a positioning convex column (21) matched with the positioning boss (321) is arranged in the base (2), and when the piston cavity (300) is compressed, the positioning boss (321) is driven to move rightwards and is in contact with the positioning convex column (21).

5. The spray gun with a double seal structure of claim 4, wherein: the inner wall of the left end of the second pipe (32) is provided with a reinforcing rib (322), and the reinforcing rib (322) is circumferentially distributed outside the positioning boss (321).

6. The spray gun with a double seal structure of claim 2, wherein: the right end of the second pipe (32) is provided with a third sealing ring (323) which is in sealing fit with the inner wall of the base (2).

7. The spray gun with a double seal structure of claim 1, wherein: the sprayer also comprises a trigger (5) hinged on the sprayer housing (1), wherein the trigger (5) pushes the movable nozzle pipe (4) to move in the opposite direction and extrude the piston cavity (300).