Waterway connecting structure of spraying machine
By setting a water retention chamber and a return water channel in the water connection structure of the sprayer, the leaking water is returned by using negative pressure, which solves the leakage problem at the connection between the sprayer's water inlet check valve and the plunger pump, realizes the recycling and sealing of water resources, and avoids rust.
Patent Information
- Application Number
- CN202422622586.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-10-29
AI Technical Summary
During the use of the sprayer, the connection between the water inlet check valve and the plunger pump is prone to leakage due to water seal epoxy oxidation and high pressure, leading to rust and waste of water resources.
In the water connection structure of the sprayer, a water retention chamber and a water return channel are set up. The leaked water is returned to the water supply channel through the connecting pipe and recirculated by negative pressure. The sealing ring and retaining sleeve are combined to ensure the stability and sealing of the connection.
It avoids rust caused by water seepage, makes full use of water resources, prevents water waste, and reduces the possibility of noise generation.
Smart Images
Figure CN223393664U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of sprayers and relates to a water channel connection structure of a sprayer. Background Art
[0002] The sprayer is a machine used in the field of agricultural irrigation in the prior art. Specifically, it generally includes a plunger pump, a water inlet one-way valve connected to the plunger pump, and a water outlet one-way valve connected to the water inlet one-way valve. Specifically, the water inlet one-way valve is provided with a water inlet, a water outlet and a mounting port. It is connected to the plunger pump through the mounting port so that the plunger can perform piston movement in the mounting port. The external water inlet pipe is connected to the water inlet of the water inlet one-way valve, and the water inlet of the water outlet one-way valve is connected to the water outlet of the water inlet one-way valve. When working, the plunger pump performs piston movement through the plunger installed inside it. When the plunger retracts, the external water source is sucked into the water inlet one-way valve through the negative pressure. When the plunger extends, the sucked water is pressed into the water outlet one-way valve and discharged outwardly, and the water is atomized and sprayed outwardly through the spray pipe connected to the water outlet one-way valve.
[0003] As the use cycle continues to increase, sprayers often leak, especially between the water inlet check valve and the plunger pump, that is, at the installation port. Currently, the installation port of the water inlet check valve and the plunger pump housing are generally connected by a tight thread fit, and a water seal ring is provided at the port of the installation port to seal the gap between the two to prevent dripping from the gap.
[0004] However, with the accumulation of frequent use, the water seal ring will be continuously oxidized and affected by the high pressure of the water flow, which will eventually cause its seal to fail. At this time, the water in the water inlet check valve will continue to pass through the water seal ring and leak out from the gap between the water inlet check valve installation port and the plunger pump housing, causing rust at the leakage point and causing unnecessary waste of water resources. Summary of the Invention
[0005] The purpose of the utility model is to solve the above problems in the existing technology and propose a water channel connection structure for a sprayer. The technical problem to be solved by the utility model is: how to achieve leaked water recovery while avoiding rust.
[0006] The objectives of the utility model can be achieved through the following technical solutions: a water path connection structure of a sprayer, the sprayer including a water inlet one-way valve and a plunger pump, the water inlet one-way valve being connected to a water inlet joint and a water outlet one-way valve, the water inlet one-way valve being provided with a mounting port connected to the plunger pump, and the plunger of the plunger pump extending into the mounting port, the water path connection structure including a main water seal ring embedded in the mounting port and sleeved on the outside of the plunger of the plunger pump, a stagnant water cavity being formed in the mounting port at one end of the main water seal ring away from the inner cavity of the water inlet one-way valve, the water path connection structure also including a connecting pipe and a channel opened in the water inlet one-way valve and connected to the stagnant water cavity, a return water hole being provided on the water inlet joint, the connecting pipe being respectively connected to the water inlet one-way valve and the water inlet joint so that the channel and the return water hole are connected.
[0007] The working principle of the water path connection structure of this sprayer is as follows: the plunger pump starts to control the plunger to retract in the installation port, and the water is sucked into the water inlet check valve through the negative pressure through the water inlet joint and the external water inlet pipe. Then the plunger pump controls the plunger to extend in the installation port to apply pressure to the water inlet check valve. Due to the one-way anti-backflow function of the water inlet check valve, the water temporarily stored inside it is input into the water outlet check valve through the water outlet of the water inlet check valve, and is sprayed outward by the water outlet check valve and the external water outlet pipe. Based on this structure, the present application provides a water retention chamber in the installation port of the water inlet check valve, so that the water that may seep through the installation port of the water inlet check valve and the pump casing of the plunger pump is restricted in the water retention chamber. Since the water inlet joint is always in a negative pressure state when the plunger pump is in the started state, the negative pressure acts on the water retention chamber through the channel, so that the water in the water retention chamber passes through the channel due to the negative pressure The water in the water channel and the return hole flow back to the water inlet joint, so that the leaked water and the water in the water inlet joint are transported to the water inlet check valve together, thereby avoiding rust at the connection between the water inlet check valve and the plunger pump housing caused by water seepage, and eliminating the waste of water resources. In addition, it should be noted that the water inlet joint and the water inlet check valve themselves are split structures, and the two are connected in a tight fit by fasteners. Due to the anti-backflow function of the water inlet check valve, the water input therein will not cause huge pressure at the connection between the two, thereby avoiding leakage at the connection between the two. As for the connection between the return water channel and the return water hole, the present application arranges a connecting pipe between the water inlet check valve and the water inlet joint, so that the connecting pipe connects the water inlet check valve and the water inlet joint in a clamping manner, and realizes the connection between the channel and the return water hole, thereby completing the connection between the return water path and the water supply water path.
[0008] The channel includes a drainage channel and a return water channel, the drainage channel is inclined upward and connected to the stagnant water cavity, the return water channel is arranged horizontally and has an inner diameter larger than the inner diameter of the drainage channel, and the return water channel is connected to the return water hole. The drainage channel and the return water channel cooperate to achieve communication between the stagnant water cavity and the water inlet joint, and because the drainage channel is arranged obliquely, it can make it easier for water retained in the stagnant water cavity to be discharged into the return water channel by gravity. In addition, because the inner diameter of the return water channel is larger than that of the drainage channel, it can further reduce the pressure of the water flowing into it. In addition, its horizontal arrangement ensures that the water flows slowly in the return water channel, ensuring that the water will not produce a violent impact with the water in the water inlet joint when it flows back into the water inlet joint, thereby avoiding the generation of noise.
[0009] In the aforementioned water connection structure for the sprayer, the water inlet check valve is provided with a first plug-in slot surrounding the return water channel, and the water inlet connector is provided with a second plug-in slot surrounding the return water hole. One end of the connecting pipe is engaged with the first plug-in slot, and the other end is engaged with the second plug-in slot. As a further solution, one end of the connecting pipe is engaged with the first plug-in slot, and the other end is engaged with the second plug-in slot. This ensures a stable connection between the water inlet connector, the connecting pipe, and the water inlet check valve, while also enabling connectivity between the return waterway and the supply waterway.
[0010] In the aforementioned water connection structure for the sprayer, an annular groove (I) is formed circumferentially on the outer wall of each end of the connecting pipe, and a sealing ring (I) is embedded in each annular groove (I). One of the sealing rings (I) abuts against the inner circumferential wall of the first plug-in groove, and the other abuts against the inner circumferential wall of the second plug-in groove. Based on the aforementioned structure, the provision of sealing rings (I) and (II) ensures a seal between the connecting pipe and the water inlet joint, as well as between the connecting pipe and the water inlet check valve. Furthermore, the positioning of sealing rings (I) and (II) is secured by annular groove (I), and by annular groove (II), respectively. This ensures that sealing rings (I) and (II) are securely positioned, preventing irregular deformation caused by extrusion during installation that could cause sealing rings (I) and (II) to fail.
[0011] In the water connection structure of the sprayer, the openings of the first and second plug-in slots are flared, thereby ensuring that the assembly of the connecting pipe is more labor-saving and convenient.
[0012] In the water channel connection structure of the above-mentioned sprayer, the water channel connection structure also includes a retaining sleeve, one end of the retaining sleeve abuts against the main water seal ring, and a secondary water seal ring arranged opposite to the main water seal ring is embedded in the retaining sleeve. The water retention chamber is formed between the outer peripheral wall of the retaining sleeve and the inner peripheral wall of the mounting port, and a water storage chamber is formed between the inner peripheral wall of the retaining sleeve and the outer peripheral wall of the plunger of the plunger pump. The water retention chamber and the water storage chamber are both located between the main water seal ring and the secondary water seal ring. A number of drainage holes arranged at intervals are opened on the side wall of the retaining sleeve located between the main water seal ring and the secondary water seal ring along the circumferential direction, and the water retention chamber and the water storage chamber are communicated through the drainage holes. Specifically, the water inlet one-way valve plays a major sealing role through the main water seal ring embedded in the installation port, and is compressed by the retaining sleeve to prevent the main water seal ring from moving in the installation port due to water pressure. When the main water seal ring fails to seal due to various factors, the seeping water will gradually penetrate through the main water seal ring into the water storage cavity in the retaining sleeve, and the secondary water seal ring in the retaining sleeve can replace the main water seal ring to play a sealing role at this time, so as to prevent the water in the water storage cavity from continuing to leak out through the secondary water seal ring. It is worth mentioning that Due to the presence of the retaining sleeve, its outer peripheral wall and the inner peripheral wall of the installation port cooperate to form an annular water retention chamber, and the water retention chamber and the water storage chamber are both located between the main water seal ring and the auxiliary water seal ring. Secondly, a number of drainage holes are opened circumferentially in the retaining sleeve to connect the water storage chamber and the water retention chamber. Under the action of water pressure, the water in the water storage chamber can enter the water retention chamber through the drainage holes in time, rather than completely acting on the auxiliary water seal ring, which can not only ensure the rapid reflux and recirculation of the seepage water, but also avoid the auxiliary water seal ring from being affected by high pressure for a long time and causing sealing failure.
[0013] In the aforementioned sprayer water connection structure, a second annular groove is formed circumferentially on the outer wall of the retaining sleeve, located between the primary water seal ring and the secondary water seal ring. A second sealing ring is embedded within the second annular groove, which abuts against the inner wall of the mounting opening. The second sealing ring seals the gap between the retaining sleeve and the inner wall of the mounting opening, thereby preventing water that has leaked out of the primary water seal ring from escaping through the gap between the retaining sleeve and the inner wall of the mounting opening.
[0014] Compared with the existing technology, the water connection structure of this sprayer has the following advantages:
[0015] By forming a water retention cavity and a water storage cavity in the installation port and a drainage channel and a return water channel in the water inlet one-way valve in conjunction with a connecting pipe to connect to the return water hole on the water inlet joint, the seeped water can flow back to the water supply waterway through the return waterway for recirculation, which can avoid rust caused by water seepage and make full use of water resources. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural diagram of the water connection structure of this sprayer.
[0017] Figure 2 It is a side view of the water connection structure of this sprayer.
[0018] Figure 3 yes Figure 2 Cross-sectional view taken along AA direction.
[0019] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle.
[0020] Figure 5 yes Figure 3 A partial enlarged view of point B in the middle.
[0021] Figure 6 It is a cross-sectional view of the water inlet check valve.
[0022] Figure 7 This is a schematic diagram of the structure of the retaining sleeve
[0023] Figure 8 It is a structural diagram of the water inlet joint.
[0024] Figure 9 It is a structural diagram of the connecting pipe.
[0025] In the figure, 1. Water inlet joint; 11. Return water hole; 12. Connecting groove 2; 2. Water inlet one-way valve; 21. Installation port; 211. Water retention chamber; 212. Main water seal ring; 22. Water inlet; 23. Water outlet; 24. Return water channel; 25. Drainage channel; 26. Connecting groove 1; 3. Connecting pipe; 31. Annular groove 1; 311. Sealing ring 1; 4. Retaining sleeve; 41. Auxiliary water seal ring; 42. Drainage hole; 43. Annular groove 2; 431. Sealing ring 2; 5. Plunger pump; 6. Water outlet one-way valve; 7. Water storage chamber. DETAILED DESCRIPTION
[0026] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
[0027] like Figure 1-3As shown, in the water connection structure of the sprayer, the sprayer includes a water inlet connector 1 and a water inlet check valve 2, wherein the water inlet connector 1 is used to connect to an external water inlet pipe to play a water supply role, and the water inlet check valve 2 is provided with three openings, namely a mounting port 21, a water inlet 22 and a water outlet 23, wherein the water outlet 23 is used to connect to the drain hole 42 of the water inlet connector 1. In addition, the sprayer also includes a plunger pump 5 and a water outlet check valve 6. The mounting port 21 of the water inlet check valve 2 is connected to the housing of the plunger pump 5, and the plunger in the plunger pump 5 is penetrated in the mounting port 21 for piston movement. In addition, the water inlet check valve 2 The water outlet 23 is connected to the water inlet of the water outlet one-way valve 6. When working, the plunger pump 5 controls the internal plunger to perform piston movement in the installation port 21. When the plunger retracts, water is sucked into the cavity of the water inlet one-way valve 2 from the water inlet joint 1 through the water inlet 22 of the water inlet one-way valve 2 by negative pressure. When the plunger extends, due to the one-way anti-backflow function of the water inlet one-way valve 2, the sucked water is discharged into the water outlet one-way valve 6 through the water outlet 23, and the water outlet one-way valve 6 inputs the water into the external drain pipe through its drain hole 42 for spraying outward, thereby completing a whole set of water flow conveying work.
[0028] Combine Figure 4 、 Figure 6 as well as Figure 7 , there is a circumferential abutment edge in the installation port 21 of the water inlet one-way valve 2, and a main water seal ring 212 and a ring-shaped retaining sleeve 4 are embedded in the installation port 21. One end of the main water seal ring 212 abuts against the abutment edge, and the other end is pressed by the retaining sleeve 4. A limiting edge is provided on the inner wall of the retaining sleeve 4 near the end of the installation port 21. A secondary water seal ring 41 abuts against the limiting edge is embedded in the retaining sleeve 4, and the main water seal ring 212 and the secondary water seal ring 41 are arranged opposite to each other. After the connection between the water inlet one-way valve 2 and the housing of the plunger pump 5 is completed later, the secondary water seal ring 41 The other end can be pressed against the sealing gasket on the housing of the plunger pump 5, so as to seal the gap between the housing of the plunger pump 5 and the water inlet one-way valve 2. When working, the plunger pump 5 in the started state controls the plunger to perform piston movement, and the main water seal ring 212 prevents the water in the water inlet one-way valve 2 from leaking out through the main water seal ring 212. As the service cycle continues to increase, the main water seal ring 212 will inevitably leak due to the influence of water pressure for a long time. At this time, the leaked water will pass through the main water seal ring 212 into the retaining sleeve 4 and be blocked by the secondary water seal ring 41.
[0029] A channel is opened in the water inlet check valve 2, which is specifically composed of a return water channel 24 and a drainage channel 25. At the same time, a return water hole 11 connected to its cavity is opened on the outer wall near the middle of the water inlet joint 1. The connecting structure includes a connecting pipe 3, which is specifically made of stainless steel. The return water channel 24 is horizontally arranged and has an inner diameter larger than the drainage channel 25. The return water channel 24 and the return water hole 11 of the water inlet joint 1 are connected by the connecting pipe 3 to achieve communication between the return water channel 24 and the return water hole 11. A water retention cavity 211 is formed between the outer wall of the retaining sleeve 4 and the inner wall of the mounting port 21. A water storage cavity 7 is formed between the inner wall of the retaining sleeve 4 and the outer wall of the plunger of the plunger pump 5 in the water inlet check valve 2. Both the water storage cavity 7 and the water retention cavity 211 are located between the main water seal ring 212 and the secondary water seal ring 41. One end of the drainage channel 25 is connected to the return water channel 24, and the other end is inclined upward and connected to the water retention cavity 211. In addition, a plurality of drainage holes 4 are opened along the circumferential direction on the outer wall of the retaining sleeve 4 to connect the water retention cavity 211 and the water retention cavity 7. 2. When the main water seal ring 212 fails to seal, the water that enters the retaining sleeve 4 through the main water seal ring 212 is blocked by the secondary water seal ring 41 to prevent the leaked water from continuing to seep out. At the same time, under the action of subsequent water pressure, the water that has seeped into the retaining sleeve 4 enters the water retention chamber 211 through the drainage hole 42, thereby reducing the pressure applied to the secondary water seal ring 41, and passes through the drainage channel 25 and the return water channel 24 in turn, and flows back through the return water hole 11 under the negative pressure force generated by the negative pressure of the water flow in the water inlet joint 1 To the water inlet joint 1, it is re-input into the water inlet 22 of the water inlet check valve 2 through the water inlet joint 1, and an annular groove 2 43 is circumferentially opened on the outer wall of the retaining sleeve 4, which is located between the main water seal ring 212 and the auxiliary water seal ring 41, and a sealing ring 2 431 is embedded in the annular groove 43, which is tightly pressed against the circumferential inner wall of the installation port 21, so as to seal the gap between the retaining sleeve 4 and the inner wall of the installation port 21, and prevent the water in the stagnant water cavity 211 from seeping out from the gap between the outer circumferential wall of the retaining sleeve 4 and the inner circumferential wall of the installation port 21.
[0030] like Figure 5 、 Figure 8 as well as Figure 9 A plug-in groove 26 is provided on the outer wall of the water inlet one-way valve 2, which is arranged around the return water channel 24. A plug-in groove 2 12 is provided on the outer wall of the water inlet channel, which is arranged around the return water hole 11. The slots of the plug-in groove 26 and the plug-in groove 2 12 are both flared. One end of the connecting pipe 3 is clamped in the plug-in groove 26, and the other end is clamped in the plug-in groove 2 12. An annular groove 31 is provided on the outer walls of both ends of the connecting pipe 3 along the circumferential direction, and a sealing ring 311 is embedded in each annular groove 31. One of the sealing rings 311 is tightly pressed against the inner circumferential wall of the plug-in groove 26, and the other sealing ring 311 is tightly pressed against the inner circumferential wall of each plug-in groove 12.
[0031] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.
[0032] Although this document frequently uses terms such as water inlet connector 1, return water hole 11, second plug-in groove 12, water inlet check valve 2, installation port 21, stagnant water chamber 211, primary water seal ring 212, water inlet 22, water outlet 23, return water channel 24, drainage channel 25, first plug-in groove 26, connecting pipe 3, first annular groove 31, first sealing ring 311, retaining sleeve 4, secondary water seal ring 41, drainage hole 42, second annular groove 43, second sealing ring 431, plunger pump 5, and water outlet check valve 6, the use of other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.
Claims
1. A water connection structure for a sprayer, the sprayer comprising a water inlet check valve (2) and a plunger pump (5), the water inlet check valve (2) being connected to a water inlet joint (1) and a water outlet check valve (6), the water inlet check valve (2) being provided with a mounting port (21) for connection with the plunger pump (5), and the plunger of the plunger pump (5) extending into the mounting port (21), the water connection structure comprising a main water seal ring (212) embedded in the mounting port (21) and sleeved on the outside of the plunger of the plunger pump (5), characterized in that: A water retention cavity (211) is formed in the installation port (21) at one end of the main water seal ring (212) away from the inner cavity of the water inlet one-way valve (2). The water channel connection structure further comprises a connecting pipe (3) and a channel opened in the water inlet one-way valve (2) and connected to the water retention cavity (211). A return water hole (11) is opened on the water inlet joint (1). The connecting pipe (3) is respectively connected to the water inlet one-way valve (2) and the water inlet joint (1) so that the channel and the return water hole (11) are connected.
2. The water channel connection structure of the sprayer according to claim 1, characterized in that: The channel comprises a connected drainage channel (25) and a return water channel (24); the drainage channel (25) is inclined upward and connected to the water retention chamber (211); the return water channel (24) is arranged transversely and has an inner diameter greater than that of the drainage channel (25); and the return water channel (24) is connected to the return water hole (11).
3. The water channel connection structure of the sprayer according to claim 2, characterized in that: The water inlet one-way valve (2) is provided with a first plug-in groove (26) arranged around the return water channel (24), and the water inlet joint (1) is provided with a second plug-in groove (12) arranged around the return water hole (11). One end of the connecting pipe (3) is engaged with the first plug-in groove (26), and the other end is engaged with the second plug-in groove (12).
4. The water channel connection structure of the sprayer according to claim 3, characterized in that: An annular groove (31) is provided on the outer wall of both ends of the connecting pipe (3) along the circumferential direction, and a sealing ring (311) is embedded in each annular groove (31), wherein one of the sealing rings (311) is tightly pressed against the inner circumferential wall of the plug-in groove (26), and the other sealing ring (311) is tightly pressed against the inner circumferential wall of the plug-in groove (12).
5. The water channel connection structure of the sprayer according to claim 3 or 4, characterized in that: The slot openings of the first plug-in slot (26) and the second plug-in slot (12) are in a flared shape.
6. The water channel connection structure of the sprayer according to claim 1, 2, 3 or 4, characterized in that: The water channel connection structure also includes a retaining sleeve (4), one end of the retaining sleeve (4) abuts against the main water seal ring (212), and a secondary water seal ring (41) is embedded in the retaining sleeve (4) and arranged opposite to the main water seal ring (212). The water retention cavity (211) is formed between the outer peripheral wall of the retaining sleeve (4) and the inner peripheral wall of the installation port (21), and a water retention cavity (211) is formed between the inner peripheral wall of the retaining sleeve (4) and the outer peripheral wall of the plunger of the plunger pump (5). The retaining sleeve (4) is provided with a plurality of drainage holes (42) arranged at intervals along the circumferential direction on the side wall between the main water seal ring (212) and the secondary water seal ring (41), and the retaining sleeve (4) is connected to the water storage chamber (7) through the drainage holes (42).
7. The water channel connection structure of the sprayer according to claim 6, characterized in that: A second annular groove (43) is provided on the outer wall of the retaining sleeve (4) between the primary water seal ring (212) and the secondary water seal ring (41) along the circumferential direction, and a second sealing ring (431) is embedded in the second annular groove (43) and is tightly pressed against the inner wall of the mounting opening (21).