Backward pushing type adjustable flushing water gun

Abstract

The invention discloses a push-back type adjustable flushing water gun which comprises a water gun lower cover and a water gun upper cover which are fixedly connected through screws, the water gun lower cover and the water gun upper cover form a water gun cover body, a water gun main body is arranged in the water gun cover body, and the water gun main body comprises a fixing base, a water gun wrench and a top nozzle. The fixing base is fixedly arranged in the water gun cover body, a water inlet cavity and a water spraying cavity which are communicated are formed in the fixing base, the water inlet cavity faces a gun handle of the water gun cover body and can be connected with an external pressure water source, one end of the water spraying cavity is fixedly connected with a gun head in a sealed mode, and the gun head is located at a muzzle of the water gun cover body. An adjusting rod is arranged in the water spraying cavity and is in elastic sliding sealing connection with the fixing base. The water gun has two flushing modes of spraying and direct injection, flexible switching can be achieved according to different cleaning requirements, the diversified requirements of different users in different scenes are met, the universality and applicability of the water gun are improved, and the water gun has wide market application prospects.

Description

Technical Field

[0001] The invention relates to the technical field of flushing devices, in particular to a rear-push adjustable flushing water gun. Background Art

[0002] In the field of cleaning and flushing, water guns are a common tool widely used in industrial cleaning, agricultural irrigation, daily cleaning and other scenarios. However, the functions of traditional water guns are relatively simple. Most of them can only provide a simple direct water flow mode, and cannot flexibly adjust the water type according to different cleaning objects and task requirements. When cleaning objects with different degrees of surface dirt and shapes, a single water type is often difficult to achieve the ideal cleaning effect. For example, when cleaning some stubborn stains, a stronger water flow impact may be required, while when cleaning more fragile items, a softer spray is required. The single water type mode of traditional water guns cannot meet these diverse needs, which greatly affects the cleaning efficiency and quality, and also limits the application of water guns in a wider range of fields. Summary of the invention

[0003] The object of the present invention is to provide a push-back adjustable flushing water gun, which is intended to be able to adjust the spray water pattern to adapt to modern diversified cleaning scenes.

[0004] To achieve the above object, the present invention provides the following technical solutions: A push-back adjustable flushing water gun comprises a water gun lower cover and a water gun upper cover fixedly connected by screws, the water gun lower cover and the water gun upper cover form a water gun cover body, a water gun body is arranged in the water gun cover body, the water gun body comprises a fixing seat, a water gun wrench and a back nozzle, the fixing seat is fixedly arranged in the water gun cover body, a connected water inlet chamber and a water spraying chamber are arranged in the fixing seat, the water inlet chamber faces the gun handle of the water gun cover body and can be connected to an external pressure water source, one end of the water spraying chamber is sealed and fixedly connected to a gun head, the gun head is located at the muzzle of the water gun cover body, an adjusting rod is arranged in the water spraying chamber, the adjusting rod is elastically slidably and sealingly connected to the fixing seat, and one end of the adjusting rod is fixedly connected to a sealing ring The sealing ring is fixedly provided with a sealing flat gasket, the back nozzle passes through the gun head, the sealing flat gasket, and the sealing ring and is fixedly connected to the adjusting rod in sequence, the other end of the adjusting rod passes through the fixing seat, the water gun wrench is hinged to the fixing seat, one end of the handle of the water gun wrench is push-pull transmission connected with the passing end of the adjusting rod, the other end of the handle of the water gun wrench passes through the water gun cover body and is located at the rear end of the gun handle of the water gun cover body, the flushing water gun is provided with three modes: closing, spraying and direct shooting. In the closing mode, the sealing flat gasket is sealed with the gun head to block the water flow outlet. In the spray mode, the sealing flat gasket is separated from the gun head and the back nozzle is located at the front end of the gun head. In the direct shooting mode, the sealing flat gasket is separated from the gun head and the back nozzle is located inside the gun head.

[0005] Furthermore, the water inlet cavity of the fixed seat is threadedly connected with a water inlet pipe, one end of the water inlet pipe connected to the water inlet cavity is sealed with the water inlet cavity by a third sealing ring, and the other end of the water inlet pipe is sealed and fixedly connected with a water inlet joint, the water inlet pipe and the water inlet joint are confined in the gun handle of the water gun cover body, and the water inlet joint is located at the end of the gun handle of the water gun cover body.

[0006] Furthermore, the water spray chamber of the fixed seat includes a coaxial threaded section, a stroke section and a connecting section from left to right, 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 fixedly connected to the gun head thread, and the gun head is sealed with the threaded section by a first sealing ring.

[0007] Furthermore, the gun head is axially provided with a connected gun head water channel and a water type guide hole, the water type guide hole is a tapered hole with the large end facing outwards, and the taper α of the water type guide hole is 45±3 degrees.

[0008] Furthermore, one end of the nozzle is provided with an external thread for being screwed to the adjusting rod, and the other end is provided with a nozzle head, the nozzle head is dumbbell-shaped, and comprises a drainage cone and an outflow cone, the taper β of the drainage cone is 60±5 degrees, and the taper γ of the outflow cone is 70±5 degrees, and the gap δ between the large end of the outflow cone (1402) and the gun head 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 gun head 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 gun head water channel (1201).

[0009] 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 a gasket positioning hole and an adjustment rod positioning hole are respectively opened at both ends of the sealing ring.

[0010] Furthermore, the fixing seat is provided with a sliding hole, the sliding hole is connected to the connecting section and is coaxial, the adjusting rod is passed through the sliding hole, a second sealing ring for sealing with the sliding hole is installed on the adjusting rod, a spring is sleeved on the adjusting rod, one end of the spring is close to the bottom of the connecting section, and the other end is close to the sealing ring.

[0011] Furthermore, a first gear sleeve and a second gear sleeve are provided at one end of the adjusting rod passing through the fixed seat, the first gear sleeve is sleeved on the adjusting rod and flush with the fixed seat, the second gear sleeve is sleeved on the adjusting rod and limited at the end of the adjusting rod by a washer screw, the water gun wrench is hinged to the fixed seat by a hexagon socket locking screw, and a shift fork is provided at one end of the handle of the water gun wrench, and the shift fork is clamped between the first gear sleeve and the second gear sleeve.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention is provided with two flushing modes, spray and direct, which can be flexibly switched according to different cleaning needs. The spray mode is suitable for cleaning relatively fragile items or large areas of light stains, while the direct mode is suitable for scenes with stubborn stains or requiring strong water flow impact. It meets the diverse needs of different users in different scenes, improves the versatility and applicability of the water gun, and has broad market application prospects.

[0013] 2. The water gun wrench of the present invention is arranged behind the gun handle. When the water gun accidentally falls during use, it can prevent the water gun wrench from touching the ground and opening by mistake, causing trouble or injury to the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the appearance diagram of the present invention; Figure 2 It is a cross-sectional view of the structure of the present invention; Figure 3 This is a schematic diagram of the main structure of the water gun; Figure 4 It is a cross-sectional view of the fixed seat; Figure 5 This is a cross-sectional view of the gun tip; Figure 6 A cross-sectional view of the backtalk; Figure 7 It is the sealing circle view; Figure 8 is a schematic diagram of the spray pattern; Fig. 9 This is a schematic diagram of the direct mode; In the figure: 01-water gun lower cover, 02-water gun upper cover, 03-fixed seat, 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 joint, 06-first gear sleeve, 07-second gear sleeve, 08-screw with washer, 09-water gun wrench, 0901-shift fork, 10-hexagon socket lock Mother-and-child screws, 11-adjusting rod, 12-gun head, 1201-gun head water channel, 1202-water type guide hole, 13-first sealing ring, 14-back nozzle, 1401-drainage 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 DESCRIPTION

[0015] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0016] See also Figure 1-Figure 7 , an embodiment provided by the present invention: A push-back adjustable flushing water gun comprises a water gun lower cover 01 and a water gun upper cover 02 which are fixedly connected by screws. The water gun lower cover 01 and the water gun upper cover 02 are formed by a mold at one time. The water gun lower cover 01 and the water gun upper cover 02 form a water gun cover body. A water gun body is arranged in the water gun cover body. The water gun body comprises a fixing seat 03, a water gun wrench 09 and a back nozzle 14. The fixing seat 03 is fixedly arranged in the water gun cover body by limiting structures on the water gun lower cover 01 and the water gun upper cover 02. A connected water inlet chamber 0301 and a water spray chamber 0302 are arranged in the fixing seat 03. The water inlet chamber 0301 faces the gun handle of the water gun cover body and can be connected to an external pressure water source. A gun head 12 is sealed and fixedly connected to one end of the water spray chamber 0302. The gun head 12 is located at the muzzle of the water gun cover body. An adjusting rod 11 is arranged in the water spray chamber 0302. 11 is elastically slidably sealed and connected with the fixing seat 03, one end of the adjusting rod 11 is fixedly connected with a sealing ring 16, and the sealing ring 16 is fixedly provided with a sealing flat gasket 15, the back nozzle 14 passes through the gun head 12, the sealing flat gasket 15, the sealing ring 16 and the adjusting rod 11 in sequence, and the other end of the adjusting rod 11 passes through the fixing seat 03, the water gun wrench 09 is hinged with the fixing seat 03, one end of the handle of the water gun wrench 09 is push-pull transmission connected with the passing end of the adjusting rod 11, and the other end of the handle of the water gun wrench 09 passes through the water gun cover body and is located at the rear end of the gun handle of the water gun cover body, by holding the gun handle and the handle of the water gun wrench 09 by hand and pressing the handle of the water gun wrench 09, the adjusting rod 11, the sealing ring 16, the sealing flat gasket 15 and the back nozzle 14 can be driven to move axially, and the flushing water gun is provided with three modes: closing, spraying and direct shooting. In the closing mode, such as Figure 2 As shown, the sealing flat gasket 15 is sealed with the gun head 12 to block the water outlet. In the spray mode, Figure 8 As shown, the sealing flat gasket 15 is separated from the gun head 12 and the back nozzle 14 is located at the front end of the gun head 12. In the direct shooting mode, Fig. 9 As shown, the sealing flat gasket 15 is separated from the gun head 12 and the back nozzle 14 is located inside the gun head 12.

[0017] Among them, the water inlet chamber 0301 of the fixed seat 03 is threadedly connected with the water inlet pipe 04, one end of the water inlet pipe 04 is connected to the water inlet chamber 0301 and is sealed with the water inlet chamber 0301 through a third sealing ring 19, and the other end of the water inlet pipe 04 is sealed and fixedly connected with the water inlet connector 05, the water inlet pipe 04 and the water inlet connector 05 are limited in the gun handle of the water gun cover body, and the water inlet connector 05 is located at the end of the gun handle of the water gun cover body, and is used to connect to an external pressure water source.

[0018] Among them, the water spray chamber 0302 of the fixed seat 03 includes a coaxial threaded section 0302A, a stroke section 0302B and a connecting section 0302C from left to right, 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 moving range of the sealing ring 16, and the moving stroke of the back nozzle 14 can be adjusted by adjusting the length of the stroke section 0302B. The threaded section 0302A is threadedly fixedly connected to the gun head 12, and the gun head 12 is sealed with the threaded section 0302A through the first sealing ring 13.

[0019] Among them, the gun head 12 is axially opened with a connected gun head 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.

[0020] Among them, one end of the back nozzle 14 is provided with an external thread for being screwed to the adjustment rod 11, and the other end is provided with a back nozzle head, which is dumbbell-shaped and includes a drainage cone 1401 and an outflow cone 1402. The taper β of the drainage cone 1401 is 60±5 degrees. The drainage cone 1401 cooperates with the gun head water channel 1201 to form a water flow channel. The taper γ of the outflow cone 1402 is 70±5 degrees, which is used to change the direction of water flow and control the gap δ between the large end of the outflow cone (1402) and the gun head water channel (1201), so that the area of ​​the annular water flow cross section formed by the large end of the outflow cone (1402) and the gun head water channel (1201) is equal to the area of ​​the middle section of the back nozzle head and the gun head water channel (1201). 0.4 times the area of ​​the annular water flow cross section. In this embodiment, δ=2.1mm, the diameter of the gun head water channel (1201) is 26.1mm, the large end diameter of the outflow cone (1402) is 21.9mm, and the middle section diameter of the nozzle head is 13.5mm. Under ideal conditions, according to the continuity equation A1V1=A2V2, where A is the water flow cross-sectional area and V is the water flow velocity, when the water flow cross-sectional area changes, the water flow velocity also changes accordingly, that is, when the water flow cross-sectional area is reduced to 0.4 times, its flow velocity increases to 2.5 times. Under normal circumstances, the flow velocity of the municipal water supply pipeline is generally 1-1.5m / s, which means that in the direct shooting mode, the water flow velocity at the water gun outlet is 2.5-3.75 m / s, which is more suitable for household cleaning and garden irrigation.

[0021] Among them, four support blocks 1601 are evenly distributed and fixed on the outer ring of the sealing ring 16, and the outer diameter of the support block 1601 matches the inner diameter of the travel section 0302B to support the adjusting rod 11 and keep the adjusting rod 11 horizontal, and enable the sealing ring 16 to slide in the travel section 0302B and cannot enter the connecting section 0302C. Gasket positioning holes 1602 and adjusting rod positioning holes 1603 are respectively opened at both ends of the sealing ring 16, which are used to install the sealing flat gasket 15 and the adjusting rod 11 respectively.

[0022] Among them, the fixed seat 03 is provided with a sliding hole 0303, the sliding hole 0303 is connected to the connecting section 0302C and is coaxial, the adjusting rod 11 is passed through the sliding hole 0303, and 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.

[0023] Among them, the adjusting rod 11 is passed through the fixed seat 03 and is provided with a first gear sleeve 06 and a second gear sleeve 07 at one end. The first gear sleeve 06 is sleeved on the adjusting rod 11 and is flush with the fixed seat 03. The second gear sleeve 07 is sleeved on the adjusting rod 11 and is limited at 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 hexagon socket locking screw 10. A fork 0901 is provided at one end of the handle of the water gun wrench 09, and the fork 0901 is stuck between the first gear sleeve 06 and the second gear sleeve 07.

[0024] Working principle of the present invention: First, connect it to the external pressure water source through the water inlet connector 05. In the initial state, that is, the closed mode, the sealing ring 16 presses the sealing flat gasket 15 against the gun head 12 under the action of the spring 17, blocking the gun head water channel 1201, and the water flow cannot be sprayed out from the gun head 12. Gently press the handle of the water gun wrench 09 with your hand, and the fork 0901 drives the adjusting rod 11, the sealing ring 16, the sealing flat gasket 15 and the back nozzle 14 to move slightly to the right, so that the sealing flat gasket 15 is slightly away from the gun head 12. At this time, it is in the spray mode, such as Figure 8 As shown, the pressurized water passes through the water inlet joint 05, the water inlet pipe 04, the water inlet chamber 0301, the water spray chamber 0302, the sealing ring 16, and enters the gun head water channel 1201 along the drainage cone 1401. Since the distance between the sealing flat gasket 15 and the gun head 12 is small and the gap between the drainage cone 1401 and the gun head water channel 1201 is also small, the water flow cross-sectional area suddenly decreases, and the flow rate also increases sharply. The high-speed water flow is sprayed on the outflow cone 1402 and is broken up to form water mist, which is sprayed outward in the form of mist along the water-type guide hole 1202. Continue to press the handle of the water gun wrench 09 to drive the sealing flat gasket 15 away from the gun head 12. The drainage cone 1401 is located in the gun head water channel 1201. At this time, it is in the direct injection mode, as shown in FIG. Fig. 9As shown, pressurized water enters the gun tip water channel 1201 through the sealing ring 16 and the water spray chamber 0302. Since the distance between the sealing flat gasket 15 and the gun tip 12 is relatively large and the gap between the drainage cone 1401 and the gun tip water channel 1201 is also relatively large, the water flow is not sufficient to form water mist when it impacts the outlet cone 1402. The water flow is sprayed outward in a straight line along the annular channel formed by the large end of the outlet cone 1402 and the gun tip water channel 1201.

[0025] The water gun body and its parts are made of stainless steel, and the sealing parts are made of nitrile rubber, which has good rust resistance and high temperature resistance, and can use high-temperature water. The water gun wrench 09 is arranged behind the gun handle. When the water gun is accidentally dropped during the use of cold water or hot water, because the center of gravity of the water gun is in the front, the muzzle or the gun handle first contacts the ground, which can prevent the water gun wrench 09 from touching the ground and opening by mistake, causing trouble or injury to the human body.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A push-back adjustable flushing water gun, comprising a water gun lower cover (01) and a water gun upper cover (02) fixedly connected by screws, wherein the water gun lower cover (01) and the water gun upper cover (02) form a water gun cover body, wherein a water gun main body is arranged in the water gun cover body, and characterized in that: The water gun body comprises a fixing seat (03), a water gun wrench (09) and a back nozzle (14); the fixing seat (03) is fixedly arranged in the water gun cover body; a water inlet chamber (0301) and a water spray chamber (0302) which are connected are arranged in the fixing seat (03); the water inlet chamber (0301) faces the gun handle of the water gun cover body and can be connected to an external pressure water source; a gun head (12) is sealed and fixedly connected to one end of the water spray chamber (0302); the gun head (12) is located at the muzzle of the water gun cover body; an adjusting rod (11) is arranged in the water spray chamber (0302); the adjusting rod (11) is elastically slidably and sealingly connected to the fixing seat (03); a sealing ring (16) is fixedly connected to one end of the adjusting rod (11); a sealing flat gasket (15) is fixedly arranged on the sealing ring (16); and the back nozzle (14) passes through the gun 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 fixing seat (03), the water gun wrench (09) is hinged to the fixing seat (03), one end of the handle of the water gun wrench (09) is connected to the end of the adjusting rod (11) through 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 gun handle of the water gun cover, the flushing water gun is provided with three modes: closing, spraying and direct shooting. In the closing mode, the sealing flat washer (15) is sealed with the gun head (12) to block the water flow outlet. In the spray mode, the sealing flat washer (15) is separated from the gun head (12) and the back nozzle (14) is located at the front end of the gun head (12). In the direct shooting mode, the sealing flat washer (15) is separated from the gun head (12) and the back nozzle (14) is located inside the gun head (12).

2. A push-back adjustable flushing water gun according to claim 1, characterized in that: The water inlet cavity (0301) of the fixing seat (03) is threadedly connected to a water inlet pipe (04); one end of the water inlet pipe (04) connected to the water inlet cavity (0301) is sealed with the water inlet cavity (0301) via a third sealing ring (19); the other end of the water inlet pipe (04) is sealed and fixedly connected to a water inlet joint (05); the water inlet pipe (04) and the water inlet joint (05) are located within the gun handle of the water gun cover; the water inlet joint (05) is located at the end of the gun handle of the water gun cover.

3. The push-back adjustable flushing water gun according to claim 1, characterized in that: The water spray chamber (0302) of the fixing seat (03) comprises, 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 fixedly connected to the gun head (12); and the gun head (12) is sealed with the threaded section (0302A) via a first sealing ring (13).

4. The push-back adjustable flushing water gun according to claim 1, characterized in that: The gun head (12) is axially provided with a connected gun head 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 outwards; and the taper α of the water-type guide hole (1202) is 45±3 degrees.

5. The push-back adjustable flushing water gun according to claim 4, characterized in that: One end of the nozzle (14) is provided with an external thread for being screwed to the adjusting rod (11), and the other end is provided with a nozzle head, the nozzle head being in a dumbbell shape, comprising a drainage cone (1401) and an outflow cone (1402), the taper β of the drainage cone (1401) being 60±5 degrees, the taper γ of the outflow cone (1402) being 70±5 degrees, and the gap δ between the large end of the outflow cone (1402) and the gun head water channel (1201) being controlled so that the area of ​​the annular water flow cross section formed by the large end of the outflow cone (1402) and the gun head 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 gun head water channel (1201).

6. The push-back adjustable flushing water gun according to claim 3, characterized in that: Four support blocks (1601) are evenly distributed and fixedly arranged on the outer ring of the sealing ring (16); the outer diameter of the support blocks (1601) matches the inner diameter of the travel section (0302B); and a gasket positioning hole (1602) and an adjustment rod positioning hole (1603) are respectively opened at both ends of the sealing ring (16).

7. The push-back adjustable flushing water gun according to claim 3, characterized in that: The fixing seat (03) is provided with a sliding hole (0303), the sliding hole (0303) is connected to and coaxial with the connecting section (0302C), the adjusting rod (11) is passed through the sliding hole (0303), a second sealing ring (18) for sealing with the sliding hole (0303) is installed on the adjusting rod (11), and 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).

8. The push-back adjustable flushing water gun according to claim 1, characterized in that: The end of the adjusting rod (11) passing through the fixing seat (03) is provided with a first gear sleeve (06) and a second gear sleeve (07); the first gear sleeve (06) is sleeved on the adjusting rod (11) and is flush with the fixing seat (03); the second gear sleeve (07) is sleeved on the adjusting rod (11) and is limited at the end of the adjusting rod (11) by a washer screw (08); the water gun wrench (09) is hinged to the fixing seat (03) by a hexagon socket locking screw (10); a shift fork (0901) is provided at one end of the handle of the water gun wrench (09); the shift fork (0901) is clamped between the first gear sleeve (06) and the second gear sleeve (07).

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