A push back adjustable washdown lance

Abstract

This invention discloses a push-type adjustable rinsing water gun, comprising a lower cover and an upper cover fixedly connected by screws, forming a water gun cover body. A water gun body is housed within the cover body, comprising a fixing base, a handle, and a nozzle. The fixing base is fixedly disposed within the cover body, and contains a communicating water inlet chamber and a spray chamber. The water inlet chamber faces the handle of the cover body and can be connected to an external pressurized water source. A nozzle is sealed and fixedly connected to one end of the spray chamber, located at the nozzle opening of the cover body. An adjusting rod is disposed within the spray chamber, and the adjusting rod is elastically and slidably sealed to the fixing base. This invention provides two rinsing modes: spray and direct spray, which can be flexibly switched according to different cleaning needs, meeting the diverse needs of different users in different scenarios, improving the versatility and applicability of the water gun, and has broad market application prospects.

Description

Technical Field

[0001] This invention relates to the field of rinsing device technology, specifically to a push-type adjustable rinsing water gun. Background Technology

[0002] In the field of cleaning and rinsing, water guns are a common tool widely used in various scenarios such as industrial cleaning, agricultural irrigation, and daily cleaning. However, traditional water guns have relatively limited functionality, with most only offering a simple direct water flow mode. They cannot flexibly adjust the water pattern according to different cleaning objects and task requirements. When cleaning objects with varying degrees of dirt and different shapes, a single water pattern often fails to achieve the desired cleaning effect. For example, a stronger water flow may be needed to clean stubborn stains, while a gentler spray is required when cleaning more delicate items. The single water pattern of traditional water guns cannot meet these diverse needs, greatly affecting cleaning efficiency and quality, and also limiting the application of water guns in a wider range of fields. Summary of the Invention

[0003] The purpose of this invention is to provide a push-type adjustable rinsing water gun, which is designed to adjust the water jet pattern to adapt to modern and diverse cleaning scenarios.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A push-type adjustable flushing water gun includes a lower cover and an upper cover fixedly connected by screws, forming a water gun cover body. A water gun body is housed within the water gun cover body, comprising a mounting base, a handle, and a nozzle. The mounting base is fixedly disposed within the water gun cover body, and has a communicating water inlet chamber and a spray chamber within it. The water inlet chamber faces the handle of the water gun cover body and can be connected to an external pressurized water source. A nozzle is sealed and fixedly connected to one end of the spray chamber, located at the nozzle opening of the water gun cover body. An adjusting rod is disposed within the spray chamber, and the adjusting rod is elastically and slidably sealed to the mounting base. A sealing ring is fixedly connected to one end of the adjusting rod. The sealing ring is fixedly equipped with a sealing flat washer. The nozzle passes through the gun head, the sealing flat washer, and the sealing ring in sequence and is fixedly connected to the adjusting rod. The other end of the adjusting rod passes through the fixed seat. The water gun wrench is hinged to the fixed seat. One end of the handle of the water gun wrench is connected to the protruding end of the adjusting rod by a push-pull transmission. The other end of the handle of the water gun wrench passes through the water gun cover and is located at the rear end of the handle of the water gun cover. The rinsing water gun is equipped with three modes: closed, spray, and direct spray. In the closed mode, the sealing flat washer seals with the gun head, blocking the water outlet. In the spray mode, the sealing flat washer is detached from the gun head and the nozzle is located at the front end of the gun head. In the direct spray mode, the sealing flat washer is detached from the gun head and the nozzle is located inside the gun head.

[0006] Furthermore, the water inlet cavity of the fixed base is threadedly connected to a water inlet pipe. One end of the water inlet pipe is sealed to the water inlet cavity through a third sealing ring, and the other end of the water inlet pipe is sealed and fixedly connected to a water inlet connector. The water inlet pipe and the water inlet connector are located inside the handle of the water gun cover, and the water inlet connector is located at the end of the handle of the water gun cover.

[0007] Furthermore, the water spray chamber of the fixed base includes, from left to right, a coaxial threaded section, a stroke section, and a connecting section. The connecting section is connected to the water inlet chamber. The inner diameter of the stroke section is slightly larger than the inner diameter of the connecting section. The threaded section is threadedly fixedly connected to the nozzle head. The nozzle head is sealed to the threaded section by a first sealing ring.

[0008] Furthermore, the gun head is provided with a connected gun head water channel and a water-shaped guide hole in the axial direction. The water-shaped guide hole is a tapered hole with the large end facing outward. The taper α of the water-shaped guide hole is 45±3 degrees.

[0009] Furthermore, one end of the nozzle is provided with an external thread for screwing into the adjusting rod, and the other end is provided with a nozzle head. The nozzle head is dumbbell-shaped and includes a flow-in cone and an outflow cone. The taper β of the flow-in cone is 60±5 degrees, and the taper γ of the outflow cone is 70±5 degrees. The gap δ between the large end of the outflow cone (1402) and the nozzle water channel (1201) is controlled so that the area of ​​the annular water flow cross section formed by the large end of the outflow cone (1402) and the nozzle water channel (1201) is 0.4-0.42 times the area of ​​the annular water flow cross section formed by the middle section of the nozzle head and the nozzle water channel (1201).

[0010] Furthermore, four support blocks are evenly and fixedly arranged on the outer ring of the sealing ring, the outer diameter of the support blocks matches the inner diameter of the stroke section, and the sealing ring is provided with a washer positioning hole and an adjustment rod positioning hole at both ends.

[0011] Furthermore, the fixed base has a sliding hole, which is connected to and coaxial with the connecting section. The adjusting rod passes through the sliding hole, and a second sealing ring for sealing with the sliding hole is installed on the adjusting rod. A spring is sleeved on the adjusting rod, with one end of the spring close to the bottom of the connecting section and the other end close to the sealing ring.

[0012] Furthermore, the adjusting rod has a first stop sleeve and a second stop sleeve at one end extending from the fixed seat. The first stop sleeve is fitted onto the adjusting rod and is flush with the fixed seat. The second stop sleeve is fitted onto the adjusting rod and is limited to the end of the adjusting rod by a washer screw. The water gun wrench is hinged to the fixed seat by an internal hexagonal lock-lock screw. The handle of the water gun wrench has a shift fork at one end, which is engaged between the first stop sleeve and the second stop sleeve.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. This invention features two rinsing modes: spray and direct spray. These modes can be flexibly switched according to different cleaning needs. The spray mode is suitable for cleaning delicate items or large areas of light stains, while the direct spray mode is suitable for stubborn stains or scenarios requiring a strong water flow. This satisfies the diverse needs of different users in different scenarios, improves the versatility and applicability of the water gun, and has broad market application prospects.

[0015] 2. The water gun wrench of the present invention is located behind the handle. If the water gun is accidentally dropped during use, it can prevent the water gun wrench from accidentally opening when it touches the ground, causing trouble or injury to the human body. Attached Figure Description

[0016] Figure 1 This is an external view of the present invention;

[0017] Figure 2 This is a cross-sectional view of the structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the main structure of the water gun;

[0019] Figure 4 This is a sectional view of the fixed base;

[0020] Figure 5 This is a cross-sectional view of the gun head;

[0021] Figure 6 This is a sectional view of the nozzle.

[0022] Figure 7 This is a view of the sealed circle;

[0023] Figure 8 This is a schematic diagram of the spray mode;

[0024] Figure 9 This is a schematic diagram of the direct-fire mode;

[0025] In the diagram: 01-Water gun lower cover, 02-Water gun upper cover, 03-Fixing base, 0301-Water inlet chamber, 0302-Water spray chamber, 0302A-Threaded section, 0302B-Stroke section, 0302C-Connecting section, 0303-Sliding hole, 04-Water inlet pipe, 05-Water inlet connector, 06-First stop sleeve, 07-Second stop sleeve, 08-Washed screw, 09-Water gun wrench, 0901-Shift fork, 10-Hex socket lock 11-Adjusting rod, 12-Gun head, 1201-Gun head water channel, 1202-Water-type guide hole, 13-First sealing ring, 14-Top nozzle, 1401-Draining cone, 1402-Outflow cone, 15-Sealing flat washer, 16-Sealing ring, 1601-Support block, 1602-Washer positioning hole, 1603-Adjusting rod positioning hole, 17-Spring, 18-Second sealing ring, 19-Third sealing ring. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0027] Please see Figures 1-7 One embodiment provided by the present invention:

[0028] A push-type adjustable flushing water gun includes a lower cover 01 and an upper cover 02 fixedly connected by screws. The lower cover 01 and the upper cover 02 are formed in one piece by a mold, forming a water gun cover body. A water gun body is disposed inside the water gun cover body, which includes a fixing base 03, a water gun lever 09, and a nozzle 14. The fixing base 03 is fixedly disposed in the water gun cover body by limiting structures on the lower cover 01 and the upper cover 02. The fixing base 03 is provided with a communicating water inlet chamber 0301 and a water spray chamber 0302. The water inlet chamber 0301 faces the handle of the water gun cover body and can be connected to an external pressurized water source. A nozzle 12 is sealed and fixedly connected to one end of the water spray chamber 0302, which is located at the nozzle of the water gun cover body. An adjusting rod 11 is disposed inside the water spray chamber 0302. Adjusting rod 11 is elastically and slidably sealed to fixed seat 03. One end of adjusting rod 11 is fixedly connected to sealing ring 16, and sealing flat washer 15 is fixedly installed on sealing ring 16. Nozzle 14 passes through nozzle 12, sealing flat washer 15, and sealing ring 16 in sequence and is fixedly connected to adjusting rod 11. The other end of adjusting rod 11 passes through fixed seat 03. Water gun wrench 09 is hinged to fixed seat 03. One end of handle of water gun wrench 09 is push-pull transmission connected to the end of adjusting rod 11. The other end of handle of water gun wrench 09 passes through water gun cover and is located at the rear end of handle of water gun cover. By holding handle and handle of water gun wrench 09 and pressing handle of water gun wrench 09, adjusting rod 11, sealing ring 16, sealing flat washer 15 and nozzle 14 can be moved axially. The flushing water gun has three modes: off, spray and direct spray. In off mode, if Figure 2 As shown, the sealing gasket 15 seals against the nozzle 12, blocking the water outlet. In spray mode, as... Figure 8 As shown, the sealing washer 15 is detached from the gun head 12 and the nozzle 14 is located at the front end of the gun head 12. In direct firing mode, as... Figure 9 As shown, the sealing flat gasket 15 is detached from the gun head 12 and the nozzle 14 is located inside the gun head 12.

[0029] Among them, the water inlet cavity 0301 of the fixed base 03 is threadedly connected to the water inlet pipe 04. One end of the water inlet pipe 04 is connected to the water inlet cavity 0301 through the third sealing ring 19 and is sealed and fixedly connected to the water inlet connector 05. The water inlet pipe 04 and the water inlet connector 05 are located inside the handle of the water gun cover. The water inlet connector 05 is located at the end of the handle of the water gun cover and is used to connect to an external pressure water source.

[0030] The water spray chamber 0302 of the fixed base 03 includes, from left to right, a coaxial threaded section 0302A, a stroke section 0302B, and a connecting section 0302C. The connecting section 0302C is connected to the water inlet chamber 0301. The inner diameter of the stroke section 0302B is slightly larger than the inner diameter of the connecting section 0302C. The stroke section 0302B is the range of movement of the sealing ring 16. By adjusting the length of the stroke section 0302B, the stroke of the nozzle 14 can be adjusted. The threaded section 0302A is threadedly fixedly connected to the nozzle head 12. The nozzle head 12 is sealed to the threaded section 0302A by the first sealing ring 13.

[0031] The nozzle 12 has an axially connected nozzle water channel 1201 and a water-type guide hole 1202. The water-type guide hole 1202 is a tapered hole with the large end facing outward. The taper α of the water-type guide hole 1202 is 45±3 degrees, which is used to control the spray angle in the spray mode.

[0032] The nozzle 14 has an external thread at one end for screwing into the adjusting rod 11, and a nozzle head at the other end. The nozzle head is dumbbell-shaped and includes a flow-guiding cone 1401 and an outlet cone 1402. The taper β of the flow-guiding cone 1401 is 60±5 degrees, and the flow-guiding cone 1401 cooperates with the nozzle water channel 1201 to form a water flow channel. The taper γ of the outlet cone 1402 is 70±5 degrees, used to change the water flow direction and control the gap δ between the large end of the outlet cone (1402) and the nozzle water channel (1201), so that the area of ​​the annular water flow cross section formed by the large end of the outlet cone (1402) and the nozzle water channel (1201) is equal to the area of ​​the middle section of the nozzle head and the nozzle water channel (1201). The cross-sectional area of ​​the annular water flow is 0.4 times that of the nozzle. In this embodiment, δ=2.1mm, the diameter of the nozzle water channel (1201) is 26.1mm, the diameter of the large end of the outlet cone (1402) is 21.9mm, and the diameter of the middle section of the nozzle head is 13.5mm. Ideally, according to the continuity equation A1V1=A2V2, where A is the cross-sectional area of ​​the water flow and V is the water flow velocity, when the cross-sectional area of ​​the water flow changes, the water flow velocity also changes. That is, when the cross-sectional area of ​​the water flow is reduced to 0.4 times, its velocity increases to 2.5 times. Under normal circumstances, the flow velocity of municipal water supply pipes is generally 1-1.5m / s, which means that in the direct spray mode, the water flow velocity at the nozzle outlet is 2.5-3.75 m / s. This flow velocity is more suitable for household cleaning and garden irrigation.

[0033] The sealing ring 16 has four support blocks 1601 evenly distributed and fixed on its outer ring. The outer diameter of the support block 1601 matches the inner diameter of the stroke section 0302B to support the adjusting rod 11 and keep the adjusting rod 11 horizontal. This allows the sealing ring 16 to slide within the stroke section 0302B but not to enter the connecting section 0302C. The sealing ring 16 has a washer positioning hole 1602 and an adjusting rod positioning hole 1603 at both ends, which are used to install the sealing flat washer 15 and the adjusting rod 11, respectively.

[0034] The fixed base 03 has a sliding hole 0303, which is connected to and coaxial with the connecting section 0302C. The adjusting rod 11 passes through the sliding hole 0303. A second sealing ring 18 for sealing with the sliding hole 0303 is installed on the adjusting rod 11. A spring 17 is sleeved on the adjusting rod 11. One end of the spring 17 is close to the bottom of the connecting section 0302C, and the other end is close to the sealing ring 16.

[0035] The adjusting rod 11 has a first stop sleeve 06 and a second stop sleeve 07 at one end of the fixed seat 03. The first stop sleeve 06 is fitted onto the adjusting rod 11 and is flush with the fixed seat 03. The second stop sleeve 07 is fitted onto the adjusting rod 11 and is limited to the rod end of the adjusting rod 11 by a washer screw 08. The water gun wrench 09 is hinged to the fixed seat 03 by an internal hexagonal locking screw 10. The handle of the water gun wrench 09 has a shift fork 0901 at one end, which is engaged between the first stop sleeve 06 and the second stop sleeve 07.

[0036] Working principle of this invention:

[0037] First, connect to an external pressurized water source via inlet connector 05. In the initial state, i.e., the closed mode, the sealing ring 16, under the action of spring 17, presses the sealing washer 15 against the nozzle 12, blocking the water channel 1201 of the nozzle. Water cannot spray out from the nozzle 12. Gently press the handle of the water gun lever 09 by hand. The fork 0901 moves the adjusting rod 11, sealing ring 16, sealing washer 15, and nozzle 14 slightly to the right, so that the sealing washer 15 is a short distance away from the nozzle 12. At this time, it is in spray mode. Figure 8 As shown, pressurized water enters the nozzle water channel 1201 through the inlet connector 05, inlet pipe 04, inlet chamber 0301, spray chamber 0302, and sealing ring 16, along the guide cone 1401. Because the distance between the sealing washer 15 and the nozzle 12 is small, and the gap between the guide cone 1401 and the nozzle water channel 1201 is also small, the cross-sectional area of ​​the water flow suddenly decreases, and the flow velocity increases dramatically. The high-speed water jet is sprayed onto the outlet cone 1402 and dispersed into a water mist, which is then sprayed outwards in a mist-like manner along the water guide hole 1202. Continuing to press the handle of the water gun wrench 09 moves the sealing washer 15 away from the nozzle 12, and the guide cone 1401 is located within the nozzle water channel 1201. At this time, it is in direct spray mode. Figure 9As shown, pressurized water enters the nozzle water channel 1201 through the sealing ring 16 and the spray chamber 0302. Because the distance between the sealing flat gasket 15 and the nozzle 12 is large and the gap between the flow cone 1401 and the nozzle water channel 1201 is also large, the water flow is insufficient to form a water mist when it impacts the outflow cone 1402. The water flow is sprayed outward in a straight line along the annular channel formed by the large end of the outflow cone 1402 and the nozzle water channel 1201.

[0038] The water gun body and its parts of this invention are all made of stainless steel, and the seals are all made of nitrile rubber, which has good rust prevention and high temperature resistance, and can use high temperature water. The water gun wrench 09 is located behind the handle. When the water gun is used with cold or hot water and is accidentally dropped, because the center of gravity of the water gun is in front, the muzzle or handle will be the first to come into contact with the ground, which can prevent the water gun wrench 09 from accidentally opening when it touches the ground and causing trouble or injury to the human body.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A push-type adjustable flushing water gun, comprising a lower cover (01) and an upper cover (02) fixedly connected by screws, wherein the lower cover (01) and the upper cover (02) form a water gun cover body, and a water gun body is disposed within the water gun cover body, characterized in that: The water gun body includes a fixed base (03), a water gun handle (09), and a nozzle (14). The fixed base (03) is fixedly installed inside the water gun cover. The fixed base (03) has a connected water inlet chamber (0301) and a water spray chamber (0302). The water inlet chamber (0301) faces the handle of the water gun cover and can be connected to an external pressure water source. One end of the water spray chamber (0302) is sealed and fixedly connected to a nozzle head (12). The nozzle head (12) is located at the nozzle of the water gun cover. An adjusting rod (11) is installed inside the water spray chamber (0302). The adjusting rod (11) is elastically and slidably sealed to the fixed base (03). One end of the adjusting rod (11) is fixedly connected to a sealing ring (16). The sealing ring (16) is fixedly provided with a sealing flat washer (15). The nozzle (14) passes through the nozzle head (12) in sequence. A sealing flat washer (15), a sealing ring (16), and an adjusting rod (11) are fixedly connected. The other end of the adjusting rod (11) passes through the fixed seat (03). The water gun wrench (09) is hinged to the fixed seat (03). One end of the handle of the water gun wrench (09) is connected to the end of the adjusting rod (11) by a push-pull transmission. The other end of the handle of the water gun wrench (09) passes through the water gun cover and is located at the rear end of the handle of the water gun cover. The flushing water gun is equipped with three modes: closed, spray, and direct spray. In the closed mode, the sealing flat washer (15) seals the nozzle (12) and blocks the water outlet. In the spray mode, the sealing flat washer (15) is detached from the nozzle (12) and the nozzle (14) is located at the front end of the nozzle (12). In the direct spray mode, the sealing flat washer (15) is detached from the nozzle (12) and the nozzle (14) is located inside the nozzle (12). The gun head (12) is provided with a water channel (1201) and a water-type guide hole (1202) in the axial direction. The water-type guide hole (1202) is a tapered hole with the large end facing outward. The taper α of the water-type guide hole (1202) is 45±3 degrees. The nozzle (14) has an external thread at one end for screwing into the adjusting rod (11), and a nozzle head at the other end. The nozzle head is dumbbell-shaped and includes a flow-guiding cone (1401) and an outflow cone (1402). The taper β of the flow-guiding cone (1401) is 60±5 degrees, and the taper γ of the outflow cone (1402) is 70±5 degrees. The gap δ between the large end of the outflow cone (1402) and the nozzle water channel (1201) is controlled so that the area of ​​the annular water flow cross section formed by the large end of the outflow cone (1402) and the nozzle water channel (1201) is 0.4-0.42 times the area of ​​the annular water flow cross section formed by the middle section of the nozzle head and the nozzle water channel (1201). The outer ring of the sealing ring (16) is evenly and fixedly provided with four support blocks (1601). The outer diameter of the support block (1601) matches the inner diameter of the stroke section (0302B). The sealing ring (16) is provided with a washer positioning hole (1602) and an adjusting rod positioning hole (1603) at both ends.

2. The adjustable flushing water gun according to claim 1, characterized in that: The water inlet chamber (0301) of the fixed base (03) is threadedly connected to a water inlet pipe (04). One end of the water inlet pipe (04) is sealed to the water inlet chamber (0301) through a third sealing ring (19). The other end of the water inlet pipe (04) is sealed and fixedly connected to a water inlet connector (05). The water inlet pipe (04) and the water inlet connector (05) are located inside the handle of the water gun cover. The water inlet connector (05) is located at the end of the handle of the water gun cover.

3. The adjustable flushing water gun according to claim 1, characterized in that: The water spray chamber (0302) of the fixed base (03) includes, from left to right, a coaxial threaded section (0302A), a stroke section (0302B), and a connecting section (0302C). The connecting section (0302C) is connected to the water inlet chamber (0301). The inner diameter of the stroke section (0302B) is slightly larger than the inner diameter of the connecting section (0302C). The threaded section (0302A) is threadedly fixed to the nozzle (12). The nozzle (12) is sealed to the threaded section (0302A) by a first sealing ring (13).

4. A push-type adjustable flushing water gun according to claim 3, characterized in that: The fixed base (03) has a sliding hole (0303), which is connected to and coaxial with the connecting section (0302C). The adjusting rod (11) passes through the sliding hole (0303). A second sealing ring (18) for sealing with the sliding hole (0303) is installed on the adjusting rod (11). A spring (17) is sleeved on the adjusting rod (11). One end of the spring (17) is close to the bottom of the connecting section (0302C), and the other end is close to the sealing ring (16).

5. A push-type adjustable flushing water gun according to claim 1, characterized in that: The adjusting rod (11) has a first stop sleeve (06) and a second stop sleeve (07) at one end of the fixed seat (03). The first stop sleeve (06) is fitted on the adjusting rod (11) and is flat against the fixed seat (03). The second stop sleeve (07) is fitted on the adjusting rod (11) and is limited to the rod end of the adjusting rod (11) by a washer screw (08). The water gun wrench (09) is hinged to the fixed seat (03) by an internal hexagonal locking screw (10). The handle of the water gun wrench (09) has a fork (0901) at one end, which is engaged between the first stop sleeve (06) and the second stop sleeve (07).

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