Portable water polo water filling device

Abstract

The application discloses a portable water ball water injection device, which comprises a cavity with a hollow structure and a water injection seat, a injection head capable of sliding up and down is arranged in the cavity, the injection head is connected with an injection rod, the injection rod protrudes outside the cavity, a first one-way control valve allowing water to flow from the cavity on the side of the injection rod to the cavity on the side far from the injection rod is arranged on the injection head; a water outlet is arranged on the side far from the injection rod of the cavity, a connecting head is arranged on the water outlet, the water injection seat is detachably connected with the connecting head, and the connecting head is communicated with the water outlet; a plurality of water outlets are arranged on the water injection seat, an injection pipe bundle communicated with each water outlet is arranged on each water outlet, and a balloon is arranged on the injection pipe bundle; and a sealing cover is arranged on the side far from the water outlet of the cavity. The portable water ball water injection device can realize continuous water extraction and pressurized injection, so that water ball water injection is realized, and the device is convenient to use, water ball water filling is uniform, and replacement is simple.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water balloon injection, in particular to a portable water balloon injection device. BACKGROUND

[0002] The water injection balloon is made of natural latex injection and tightening, which can be used for water fight, outdoor queuing and other entertainment projects. The existing water balloon injection technology mainly connects the water balloon injection interface with a water pipe, connects a string of balloon supporting rods under the interface, and uses rubber bands to bundle the balloons and the balloon connection under the balloon supporting rod. The water balloon is directly filled with water by using the water pressure of the water pipe. After the water filling is completed, the balloon can be shaken by hand to make the balloon fall. This structure can only have a water pipe with a certain water pressure and a specific size due to the water injection method, so the use occasion is greatly limited. At the same time, in order to facilitate and reduce the trouble of back and forth water filling, the number of balloons in each string is large. During use, due to the violent fluctuation of water pressure, the phenomenon of uneven water filling size may occur. Correspondingly, due to the expansion of the balloon after water injection, the balloon supporting rod needs to be very long to satisfy the space after the expansion of a string of balloons without mutual extrusion, which causes a great waste of the balloon supporting rod. For example, the pipe bundle water balloon group disclosed in application No. CN201420608226.5, the water balloon filling mechanism disclosed in application No. CN201520521540.4, and the water balloon injector disclosed in application No. CN201520982671.2 all have the above problems. SUMMARY

[0003] The present application aims to provide a portable water balloon injection device, which can realize continuous water extraction and pressurized injection to realize water balloon injection, without the need for a water pipe, convenient to use, uniform water balloon filling, and easy to replace.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0005] The portable water polo water filling device comprises a cavity with a hollow structure and a water filling seat, an injection head is arranged inside the cavity and can slide up and down, the injection head is connected with an injection rod, the injection rod protrudes outside the cavity, a first one-way control valve is arranged on the injection head, which allows water to flow from the side of the injection rod to the side far from the injection rod, a water outlet is arranged on the side far from the injection rod of the cavity, a connecting head is arranged on the water outlet, the water filling seat is detachably connected with the connecting head, the connecting head is through the water outlet, a plurality of water outlets are arranged on the water filling seat, an injection pipe bundle is arranged on each water outlet and is through the water outlet, a balloon is arranged on the injection pipe bundle, a sealing cover is arranged on the side far from the water outlet of the cavity, the sealing cover covers the cavity, a water inlet is arranged on the side far from the water outlet of the cavity or the sealing cover, a through hole is arranged on the sealing cover for the up and down movement of the injection rod, the injection rod passes through the through hole and is sealingly connected with the sealing cover through a sealing pad and / or a sealing ring, the connecting head comprises two opposite clamping grooves, the opening area surrounded by the two clamping grooves has an inner large and outer small structure, the small end of the opening can pass the injection pipe bundle, the shape of the water filling seat is adapted to the area surrounded by the two clamping grooves, the water filling seat can be inserted into the two clamping grooves, and the water outlet is through the water outlet when the water filling seat is inserted into the two clamping grooves.

[0006] Preferably, a water distribution cavity is arranged on the water filling seat and covers all the water outlets, the water distribution cavity is through the water outlet and the area surrounded by the two clamping grooves can cover the water distribution cavity when the water filling seat is inserted into the two clamping grooves.

[0007] Preferably, a second one-way control valve is arranged on the water inlet, which allows water to flow from the outside of the cavity to the inside of the cavity.

[0008] Preferably, the second one-way control valve is a check valve or a flexible rubber pad, when the second one-way control valve is a flexible rubber pad, the flexible rubber pad can cover the water inlet.

[0009] Preferably, when the second one-way control valve is a flexible rubber pad, the sealing pad or the sealing ring is separately arranged on the sealing cover or the sealing pad or the sealing ring is used as the flexible rubber pad, when the sealing pad or the sealing ring is used as the flexible rubber pad, a supporting pad is arranged on the injection rod, the supporting pad can slide up and down on the injection rod and is arranged below the sealing pad or the sealing ring.

[0010] Preferably, the water inlet is connected with a flexible pipe through a water inlet channel, and a pulling handle is arranged on the injection rod.

[0011] Preferably, the first one-way control valve comprises a first flow-through hole through the injection head and a flexible pad, the flexible pad is arranged on the side far from the injection rod and can cover the first flow-through hole.

[0012] Preferably, the first one-way control valve comprises a baffle plate matched with the inner wall of the cavity, the baffle plate is connected with the injection head and can slide up and down with the injection head, a free gasket is arranged between the baffle plate and the injection head, the free gasket can freely slide up and down between the baffle plate and the injection head, the outer diameter of the free gasket is larger than the inner diameter of the cavity, a second flow conversion hole is arranged on the baffle plate, the diameter of the injection head is matched with the gap between the inner wall of the cavity, and the inner diameter of the free gasket is smaller than the diameter of the injection head.

[0013] Preferably, the baffle plate and the injection head are connected through a connecting rod, a third flow conversion hole is arranged on the connecting rod, and the second flow conversion hole and the third flow conversion hole are connected in penetration.

[0014] Preferably, a plurality of protrusions are arranged on the edge of the injection head, and the protrusions are matched with the inner diameter of the cavity.

[0015] Preferably, a handle is arranged on the water injection seat, the water outlets are arranged in rows on the water injection seat, the water injection seat and the water distribution cavity are both substantially rectangular in cross section, and the length of the injection pipe bundle is 4cm-15cm; when the water outlets are arranged in two rows or more than two rows, the adjacent two rows of water outlets are arranged in staggered arrangement.

[0016] Preferably, a closed surface is arranged on the same side of the two clamping grooves, the thickness of the water injection seat has a gradually narrowing trend from the side close to the handle to the side far from the handle, and the opening large end of the two clamping grooves has a gradually narrowing trend from the side far from the closed surface to the side close to the closed surface.

[0017] Preferably, the support pad can cover the sealing gasket or the sealing ring, a limiting column is arranged on the support pad, the limiting column is arranged on the injection rod and abuts against the sealing gasket or the sealing ring, and a flow hole is arranged on the support pad.

[0018] Further preferably, the cavity and the connecting head are integrally formed or detachably connected; when the cavity and the connecting head are detachably connected, the cavity and the connecting head are threadedly connected, clamped or interference-fitted.

[0019] As can be seen from the above technical solution, by setting a first one-way control valve on the injection head that only allows water to flow from the side cavity of the injection rod to the side cavity of the far injection rod, and sealing the injection rod to the cavity, the cavity is divided into two. When the injection rod is pushed to move the injection head from top to bottom, the lower part of the cavity is compressed, which pressurizes the water in the lower part of the cavity. The water is injected into the balloon through the outlet, connector, outlet hole, and injection tube bundle. At this time, the space in the upper part of the cavity gradually increases, forming a negative pressure, which allows external water to flow into the cavity through the inlet. When the injection rod drives the injection head to move from bottom to top, a negative pressure is formed in the lower part of the cavity. The water in the upper part of the cavity flows from the side cavity of the injection rod to the side cavity of the far injection rod through the first one-way control valve, filling the lower part of the cavity with water, thereby realizing continuous water extraction and pressurized injection, and thus realizing water balloon injection. By setting two opposing snap-fit ​​grooves on the connector head, and inserting a water injection seat that matches the shape of the two snap-fit ​​grooves into them, the water distribution chamber is connected to the water outlet. Simultaneously, the area enclosed by the two snap-fit ​​grooves covers the water distribution chamber, achieving a sealed connection between the connector head and the water injection seat. Water is then injected into the balloon through the water outlet, connector head, water outlet hole, and injection tube bundle. A recessed water distribution chamber on the water injection seat, covering all water outlet holes, ensures that water flowing from the water outlet is evenly distributed through the water distribution chamber before being forced into the corresponding balloon through its respective water outlet hole, guaranteeing uniform filling of the water balloon. The water outlet holes are arranged in rows on the water injection seat instead of the previous radial arrangement. This staggered arrangement of adjacent rows of water balloons after filling further reduces the expansion range, thus reducing the length of the corresponding injection tube bundle and saving on injection tube bundle manufacturing costs. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the portable water ball injection device (water injection base pull-out card slot);

[0021] Figure 2 This is a schematic diagram of the water inlet base and connector;

[0022] Figure 3 This is a schematic diagram showing the disassembled state of the portable water ball injection device (excluding the injection base);

[0023] Figure 4 This is an exploded view of another embodiment of the portable water ball injection device (excluding the injection base);

[0024] Figure 5 A top view schematic diagram of the first embodiment of the first one-way control valve;

[0025] Figure 6 This is a schematic diagram of the main cross-sectional structure of the first embodiment of the first one-way control valve.

[0026] Figure 7 A top view schematic diagram of the second embodiment of the first one-way control valve;

[0027] Figure 8 This is a schematic diagram of the main cross-sectional structure of the second embodiment of the first one-way control valve (with the injection head moving from top to bottom);

[0028] Figure 9 This is a schematic diagram of the main cross-sectional structure of the second embodiment of the first one-way control valve (with the injection head moving from bottom to top).

[0029] Figure 10 This is a schematic diagram of the main cross-sectional structure of the third embodiment of the first one-way control valve (with the injection head moving from top to bottom);

[0030] Figure 11 for Figure 4 Enlarged view diagram;

[0031] Figure 12 This is a top view of the water injection base. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings:

[0033] like Figures 1 to 12 As shown, this portable water ball injection device includes a cavity 1 with a hollow structure and a water injection base 9. The cavity 1 preferably has a circular cross-section. Inside the cavity 1, there is an injection head 2 that can slide up and down. The injection head 2 is connected to an injection rod 3. The injection rod 3 protrudes from the outside of the cavity 1 and is sealed to the cavity 1 by a sealing gasket and / or a sealing ring. The injection head 2 is provided with a first one-way control valve 4 that only allows water to flow from the cavity on the side of the injection rod 3 to the cavity on the side far from the injection rod 3. A water outlet 7 is provided on the side of the cavity 1 far from the injection rod 3, and a connector 8 is provided on the water outlet 7. A sealing cap 10 is provided on the far outlet 7 side of the cavity 1. The sealing cap 10 is attached to the cavity 1 by a threaded connection or an interference fit between the sealing cap 10 and the cavity 1. A through hole 11 is provided on the sealing cap for the injection rod to move up and down. The injection rod passes through the through hole 11 and moves up and down within the through hole 11. An inlet 5 is provided on the far outlet side of the cavity 1 or on the sealing cap. An inlet channel 501 is provided on the inlet 5. The inlet channel 501 is connected to a water storage container through a flexible tube (not shown in the attached figure). The inlet channel 501 can be straight or L-shaped. The inlet 5 is preferably located on the sealing cap 10 to facilitate the insertion and subsequent withdrawal of the injection head 2. The injection rod is sealed to the sealing cap 10 through a sealing gasket 12 and / or a sealing ring to prevent water in the cavity from overflowing to the outside of the cavity. The water injection base 9 and the connector 8 are detachably connected. The water injection base 9 is provided with multiple water outlet holes 91. Each water outlet hole 91 is provided with an injection tube bundle 92 that communicates with the water outlet hole 91. A balloon 93 is provided on the injection tube bundle 92. The balloon 93 is fixed to the injection tube bundle 92 by a rubber band.

[0034] The connector 8 includes two opposing snap-fit ​​grooves 82, and can also be provided with a water outlet channel 81 that communicates with the water outlet 7, and then the two snap-fit ​​grooves 82 are connected to the water outlet channel. The opening 83 area enclosed by the two snap-fit ​​grooves 82 has a structure that is larger inside and smaller outside. The small end 84 of the opening allows the injection tube bundle 92 to pass through, and a sealing surface 85 is provided on the same side of the two snap-fit ​​grooves 82. The shape of the water injection seat 9 is adapted to the area enclosed by the two snap-fit ​​grooves 82, so that the water injection seat 9 can be inserted into the two snap-fit ​​grooves 82. The water injection seat also has a concave water distribution cavity 94 that can cover all the water outlet holes 91. When the water injection seat 9 is inserted into the two snap-fit ​​grooves 82, the water distribution cavity 94 is connected to the water outlet 7, and the area enclosed by the two snap-fit ​​grooves 82 can cover the water distribution cavity 94, so that the two snap-fit ​​grooves can naturally seal the water distribution cavity 94, so that the water in the cavity is injected into the balloon through the water outlet 7, connector 8, water distribution cavity 94, water outlet hole 91, and injection tube bundle 92. Both the water injection base 9 and the water distribution chamber 94 are basically rectangular. The water distribution chamber 94 is designed so that the water flowing out of the outlet 7 is first evenly distributed through the water distribution chamber 94 before being pressed into the corresponding balloons through their respective water outlet holes 91, ensuring that the water balloons are filled evenly. Furthermore, the water outlet holes 91 are arranged in rows on the water injection base 9, preferably 1 to 4 rows. When there are two or more rows of water outlet holes, the water outlet holes in adjacent rows are staggered instead of the previous radial arrangement. This staggered arrangement of the balloons in adjacent rows after filling can further reduce the expansion range, thus reducing the length of the corresponding injection tube bundle 92 from the original 20-40cm to the current 4-15cm, saving on the processing cost of the injection tube bundle. By providing a handle 95 on the water inlet base 9, the water inlet base and the two locking slots can be quickly inserted and removed, allowing for rapid connection and disassembly. The water inlet base 9 and the two locking slots 82 have a transition fit or interference fit, ensuring that water will not leak between them. Furthermore, the larger opening 86 of the two locking slots can be designed with a gradually narrowing wedge shape from the side far from the closed surface 85 to the side near the closed surface 85, and the thickness of the water inlet base 9 can also gradually narrow from the side near the handle 95 to the side far from the handle 95. This creates a gradually tightening effect when the water inlet base is inserted into the two locking slots 82, resulting in a tighter connection between them. In this way, the injection head 2 divides the cavity 1 into two parts, pushing the injection rod 3 to move the injection head 2 from top to bottom. The lower part of the cavity 1 is compressed, pressurizing the water in the lower part of the cavity 1. The water is injected into the balloon through the outlet 7, connector 8, outlet hole 91, and injection tube bundle 92. At this time, the space in the upper part of the cavity 1 gradually increases, forming a negative pressure, which allows external water to flow into the cavity through the inlet 5, realizing the simultaneous filling of the balloon and the cavity with water. When the injection rod 3 drives the injection head 2 to move from bottom to top, a negative pressure is formed in the lower part of the cavity. The water in the upper part of the cavity 1 flows from the cavity on the side of the injection rod 3 to the cavity on the side far from the injection rod 3 through the first one-way control valve 4, filling the lower part of the cavity with water, thereby realizing the continuous extraction and pressurized injection of water, and thus realizing the continuous filling of the water balloon.The cavity and connector can be either integrally injection molded or detachably connected; when the cavity and connector are detachably connected, they are threaded, snap-fitted, or interference-fitted.

[0035] In a preferred embodiment, a second one-way control valve is provided on the inlet 5, which only allows water to flow from the outside of the cavity 1 to the inside of the cavity 1. The second one-way control valve can be a common duckbill-shaped check valve 51 or a flexible rubber pad. When the second one-way control valve is a flexible rubber pad, the flexible rubber pad can cover the inlet 5. At this time, the sealing gasket 12 or sealing ring and the flexible rubber gasket can be set separately on the sealing cover, or the size of the sealing gasket 12 or sealing ring can be increased so that the sealing gasket 12 or sealing ring can act as a flexible rubber gasket. When the sealing gasket or sealing ring is used as a flexible rubber gasket, a support pad 13 is provided on the injection rod. The support pad 13 can slide up and down on the injection rod and is set below the sealing gasket or sealing ring. The support pad 13 can cover the rubber gasket and a limiting post 131 is provided on the support pad 13. The limiting post 131 is provided on the injection rod and abuts against the sealing gasket 12, so that the sealing gasket always abuts against the sealing cover, the injection rod always keeps sealed with the sealing cover, the sealing gasket always stays at the water inlet, and a gap formed by the limiting post 13 is always left between the support pad 13 and the sealing gasket 12. A flow hole 132 is provided on the support pad. When the injection rod 3 is pushed downward, the space in the upper part of the cavity 1 gradually increases, forming a negative pressure, which causes the sealing gasket 12 to open the water inlet. External water flows into the cavity through the water inlet 5 and the flow hole 132, realizing the simultaneous filling of the balloon and the cavity with water. When the injection rod 3 moves the injection head 2 from bottom to top, a negative pressure is formed in the lower part of the cavity. The water in the upper part of the cavity 1 flows from the cavity on the side of the injection rod 3 to the cavity on the side far from the injection rod 3 through the first one-way control valve 4, filling the lower part of the cavity with water. At this time, the sealing gasket adheres tightly to the sealing cover under the action of water pressure, forming a seal on the water inlet, so that the cavity forms a closed circulation system, preventing water from flowing from the inside of the cavity 1 to the outside of the cavity 1.

[0036] In one embodiment, the first one-way control valve 4 includes a first flow hole 41 penetrating the injection head and a flexible pad 42. The flexible pad 42 is disposed on the side of the far injection rod 3 and can cover the first flow hole 41. The first flow hole 41 is disposed eccentrically or in a ring array on the injection head. When the injection rod 3 is pushed to move the injection head 2 from top to bottom, the flexible pad 42 adheres to the injection head due to the obstruction of the injection head, covering the first flow hole 41 to prevent water from flowing from the cavity on the far injection rod 3 side to the cavity on the far injection rod 3 side. When the injection head 2 moves from bottom to top, the flexible pad 42 undergoes flexible deformation under the negative pressure of the cavity on the far injection rod 3 side and the water pressure of the cavity on the far injection rod 3 side, causing the flexible pad 42 to detach from the injection head 2, thereby allowing water to flow from the cavity on the far injection rod 3 side through the first flow hole 41 to the cavity on the far injection rod 3 side, realizing continuous water extraction and pressurized injection.

[0037] Alternatively, the first one-way control valve 4 includes a baffle 401 adapted to the inner wall of the cavity 1. The baffle 401 is connected to the injection head 2 via a connecting rod 402 and can slide up and down with the injection head 2. A free washer 403 is provided between the baffle 401 and the injection head 2. The free washer 403 can move up and down between the baffle 401 and the injection head 2. The outer diameter of the free washer 403 is larger than the inner diameter of the cavity 1 and smaller than the diameter of the injection head 2. A second flow conversion hole 404 is provided on the baffle 401. Furthermore, the diameter of the injection head 2 is fitted with the inner wall of the cavity 1 through a gap, allowing water to enter the area between the free washer 403 and the injection head through this gap. The second flow conversion hole 404 can be a hole or a slit. A third flow conversion hole 4043 can also be provided on the connecting rod 402. The second flow conversion hole 404 and the third flow conversion hole 4043 are connected through each other. Several protrusions 21 are provided on the edge of the injection head. The protrusions 21 fit with the inner wall of the cavity to prevent the injection head from shaking. When the injection rod 3 is pushed to move the injection head 2 from top to bottom, the free washer 403 rubs against the inner wall of the cavity, causing the free washer 403 to rest against the injection head 2, thus sealing the gap between the injection head 2 and the inner wall of the cavity 1 and preventing water from flowing from the cavity on the side of the injection rod 3 to the cavity on the side of the injection rod 3. When the injection head 2 moves from bottom to top, the free washer 403 rubs against the inner wall of the cavity, causing the free washer 403 to rest against the baffle 401. Water in the cavity on the side of the injection rod 3 can then enter the area between the free washer 403 and the injection head through the gap mentioned above, and then flow through the second flow conversion hole 404 or first through the third flow conversion hole 4043 and then through the second flow conversion hole 404 to the cavity on the side of the injection rod 3, thus achieving continuous water extraction and pressurized injection.

[0038] In the above technical solution, only one end of the flexible tube is inserted into the water inlet channel 501, and the other end is connected to the water storage container. Then, the water injection seat is inserted into the two locking slots. By repeatedly pulling up and down the pull handle 31 located at the end of the injection rod 3, water can be continuously extracted and pressurized for injection, thus filling the water balloon. After the balloon is filled with water, the handle 95 is held to pull the water injection seat out of the two locking slots, and the water balloon can be shaken by hand to detach the water balloon from the injection tube bundle 92. No water pipe is needed, making it very convenient to use, and the water balloon is filled with water evenly.

[0039] This embodiment is merely an illustration of the concept and implementation of the present invention and is not intended to limit it. Under the concept of the present invention, technical solutions without substantial changes are still within the scope of protection.

Claims

1. A portable water ball injection device, characterized in that, The device includes a hollow cavity and a water injection base. Inside the cavity is an injection head that can slide up and down, connected to an injection rod. The injection rod protrudes outside the cavity. A first one-way control valve is located on the injection head, allowing water to flow only from the injection rod side cavity to the side cavity distal to the injection rod. An outlet is located on the side of the cavity distal to the injection rod, and a connector is provided at the outlet. The water injection base is detachably connected to the connector, which communicates with the outlet. The water injection base has several water outlet holes, each with an injection tube bundle communicating with it. A balloon is attached to the injection tube bundle. A sealing cap is provided on the far outlet side of the cavity, and the sealing cap is placed on the cavity. An inlet is provided on the far outlet side of the cavity or on the sealing cap. A through hole is provided on the sealing cap for the injection rod to move up and down. The injection rod passes through the through hole and is sealed to the sealing cap through a sealing gasket and / or sealing ring. The connector includes two opposing snap-fit ​​grooves. The opening area enclosed by the two snap-fit ​​grooves has a structure that is larger inside and smaller outside. The small end of the opening can allow the injection tube bundle to pass through. The shape of the water injection seat is adapted to the area enclosed by the two snap-fit ​​grooves. The water injection seat can be inserted into the two snap-fit ​​grooves. When the water injection seat is inserted into the two snap-fit ​​grooves, the water outlet is connected to the water outlet hole. The first one-way control valve includes a baffle adapted to the inner wall of the cavity. The baffle is connected to the injection head and can slide up and down with the injection head. A free gasket is provided between the baffle and the injection head. The free gasket can move up and down between the baffle and the injection head. The outer diameter of the free gasket is larger than the inner diameter of the cavity. A second flow conversion hole is provided on the baffle. The diameter of the injection head is clearance-fitted with the inner wall of the cavity. The inner diameter of the free gasket is smaller than the diameter of the injection head.

2. The portable water ball injection device as described in claim 1, characterized in that, The water injection base has a recessed water distribution cavity that can cover all the water outlets. When the water injection base is inserted into the two locking slots, the water distribution cavity is connected to the water outlet and the area enclosed by the two locking slots can cover the water distribution cavity.

3. The portable water ball injection device as described in claim 2, characterized in that, A second one-way control valve is provided on the water inlet, which only allows water to flow from the outside of the cavity to the inside of the cavity.

4. The portable water ball injection device as described in claim 3, characterized in that, The second one-way control valve is a check valve or a flexible rubber pad. When the second one-way control valve is a flexible rubber pad, the flexible rubber pad can cover the water inlet.

5. The portable water ball injection device as described in claim 3, characterized in that, When the second one-way control valve is a flexible rubber pad, the sealing pad or sealing ring and the flexible rubber pad are respectively set on the sealing cover, or the sealing pad or sealing ring is used as the flexible rubber pad; when the sealing pad or sealing ring is used as the flexible rubber pad, a support pad is provided on the injection rod, the support pad can slide up and down on the injection rod and the support pad is set below the sealing pad or sealing ring.

6. The portable water ball injection device as described in any one of claims 1 to 3, characterized in that, The water inlet is connected to the flexible tube through the water inlet channel, and a pull handle is provided on the injection rod.

7. The portable water ball injection device as described in claim 1, characterized in that, The baffle is connected to the injection head via a connecting rod. A third flow conversion hole is provided on the connecting rod, and the second flow conversion hole and the third flow conversion hole are connected in a through connection.

8. The portable water ball injection device as described in claim 1, characterized in that, Several protrusions are provided on the edge of the injection head, and the protrusions are matched with the inner diameter of the cavity.

9. The portable water ball injection device as described in any one of claims 1 to 3, characterized in that, A handle is provided on the water injection base, and the water outlet holes are arranged in rows on the water injection base. The cross-section of the water injection base and the water distribution cavity are basically rectangular, and the length of the injection tube bundle is 4cm-15cm. When there are two or more rows of water outlet holes, the water outlet holes in adjacent rows are arranged alternately.

10. The portable water ball injection device as described in claim 9, characterized in that, A closed surface is provided on the same side of the two locking slots. The thickness of the water injection seat gradually narrows from the side near the handle to the side far from the handle. The larger end of the opening of the two locking slots gradually narrows from the side far from the closed surface to the side near the closed surface.

11. The portable water ball injection device as described in claim 5, characterized in that, The support pad can cover the sealing gasket or sealing ring. A limiting post is provided on the support pad, which passes through the injection rod and abuts against the sealing gasket or sealing ring. A flow hole is opened on the support pad.

12. The portable water ball injection device as described in any one of claims 1 to 3, characterized in that, The cavity and the connector are integrally formed or detachably connected; when the cavity and the connector are detachably connected, the cavity and the connector are threaded, snap-fitted or interference-fitted.

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