A negative pressure sprayer for PVC plastic pipes

Abstract

This invention discloses a negative pressure sprayer for PVC plastic pipes, comprising a sprayer, a rod body, and a spray head. The rod body has a fixed sealing assembly inside and a limiting assembly on its surface. An annular groove is formed on the inner wall of the rod body. The fixed sealing assembly includes a sliding rod, a connecting rod, a turntable, a fixing plate, and a fixing element. The turntable has an arc-shaped groove. Through the fixed sealing assembly and the limiting assembly, during use, inserting the PVC plastic pipe from the left side of the rod body and rotating the PVC plastic pipe controls the clamping plate to hold the pipe in place. Simultaneously, the clamping plate stretches the rubber sheet, ensuring a tight seal at the connection between the rod body and the PVC plastic pipe. This effectively avoids the problem of water dripping at the connection between the negative pressure sprayer and the PVC plastic pipe caused by improperly wrapped sealing tape or poorly positioned sealing gaskets.

Description

Technical Field

[0001] This invention relates to the field of negative pressure sprayers, and particularly to a negative pressure sprayer for PVC plastic pipes. Background Technology

[0002] A sprayer is short for spraying equipment. A sprayer is a device that uses air suction to turn medicine or other liquids into a mist and spray it evenly onto other objects.

[0003] PVC is a material whose main component is polyvinyl chloride, with other components added to enhance its heat resistance, toughness, and ductility. The top layer of this surface film is paint, the middle layer is mainly polyvinyl chloride, and the bottom layer is a backing adhesive.

[0004] Currently used negative pressure sprayers require sealing tape or gaskets to connect to PVC pipes. Improperly applied sealing tape or gaskets can easily lead to dripping at the connection point. Furthermore, disassembling the sprayer requires removing the sealing tape or gasket, necessitating the application of new tape or gaskets for subsequent use, resulting in waste. Therefore, we propose a negative pressure sprayer specifically designed for PVC pipes. Summary of the Invention

[0005] The main objective of this invention is to provide a negative pressure sprayer for PVC plastic pipes, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides a negative pressure sprayer for PVC plastic pipes, comprising a sprayer, the sprayer including a rod and a spray head, a fixing and sealing assembly disposed inside the rod, a limit assembly disposed on the surface of the rod, and an annular groove formed on the inner wall of the rod, the fixing and sealing assembly comprising:

[0007] A sliding rod, the two ends of which are slidably mounted on the inner side of an annular groove on the inner wall of the rod body;

[0008] A connecting rod, the right side of which is fixed to the left side of the sliding rod;

[0009] A turntable, the right side of which is fixed to the left side of the connecting rod;

[0010] A fixed plate is fixed to the inner wall of the rod, and the right side of the fixed plate is rotatably connected to the turntable;

[0011] A fixing component is provided on the left side of the fixing plate.

[0012] Optionally, the turntable has an arc-shaped groove, and the fixed plate has a vertical groove.

[0013] Optionally, the fixing component includes a clamp plate, which is slidably mounted on a vertical groove on a fixed disk and an arc-shaped groove on a turntable. A spring A is fixed to the inner side of the vertical groove on the fixed disk. The end of the spring A away from the fixed disk is fixed to the clamp plate. There are three sets of clamp plates and springs A, and the three sets of clamp plates and springs A are arranged in a circular array with the center point of the fixed disk as the center. A rubber cloth is fixed to the side of the three sets of clamp plates away from the center of the fixed disk. The end of the rubber cloth away from the clamp plate is fixed to the inner wall of the rod.

[0014] Optionally, the limiting component includes a handle, which is penetrated by and fixedly connected to the rod body. A groove is provided on the inner side of the handle, and a locking rod is slidably installed on the inner side of the groove. The locking rod penetrates the rod body and is slidably connected to the rod body, and a spring B is fixed at the end of the locking rod away from the rod body.

[0015] Optionally, the end of the spring B away from the lever is fixed in a groove on the inside of the grip. A support rod is hinged to the left side of the lever, and a push rod is hinged to the end of the support rod away from the lever. The push rod passes through the grip and is slidably connected to the grip. A push ring is fixed to the left side of the push rod, and the push ring is passed through the rod body and is slidably connected to the rod body.

[0016] Optionally, a groove is formed on the inner wall of the rod.

[0017] Optionally, a water-saving component is provided inside the rod body. The water-saving component includes a fixed rod, which is fixed to the inner wall of the rod body. The fixed rod is penetrated by a crossbar and slidably connected to the crossbar. A spring C is fixed to the right side of the fixed rod. The end of the spring C away from the fixed rod is fixed to the crossbar. A baffle is fixed to the right side of the crossbar.

[0018] Optionally, the slide rod consists of a connecting rod and a slip ring. The slip ring is slidably installed on the inner side of the annular groove on the inner wall of the rod. The connecting rod is fixed to the inner side of the slip ring, and a slot is formed on the surface of the slip ring.

[0019] Optionally, both the fixed disk and the turntable have through holes at their centers.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] (1) The negative pressure sprayer for PVC plastic pipes, through the fixed sealing component and the limiting component, when in use, after inserting the PVC plastic pipe from the left side of the rod body, the PVC plastic pipe can be rotated to control the clamp to clamp the PVC plastic pipe. At the same time, the clamp stretches the rubber cloth, which can ensure the sealing of the connection between the rod body and the PVC plastic pipe. It can effectively avoid the problem of water dripping at the connection between the negative pressure sprayer and the PVC plastic pipe due to improper wrapping of the sealing tape or poor placement of the sealing gasket.

[0022] (2) The negative pressure sprayer for PVC plastic pipes, through the fixed sealing component and the limiting component, when it is necessary to separate the sprayer from the PVC plastic pipe, simply push the push ring to the right to control the clamp to loosen the PVC plastic pipe and pull out the PVC plastic pipe. It is convenient to use and can be used multiple times. It effectively avoids the waste caused by using sealing tape or rubber gaskets, which requires wrapping new sealing tape or using new sealing gaskets for the next use.

[0023] (3) The negative pressure sprayer for PVC plastic pipes, through the water-saving component, allows the baffle to abut against the groove on the inner wall of the rod, preventing water droplets from passing through. When the PVC plastic pipe connected to the sprayer is connected to the water source, as the water flows into the interior of the rod, the water impacts the baffle and pushes it to the right, so that the baffle no longer blocks the rod, allowing water to pass through the rod and spray out through the spray head. When the water source is turned off, the baffle can no longer be subjected to sufficient impact force. Under the action of spring C, the crossbar moves the baffle to the left to reset and block the rod again, preventing water inside the rod from passing through. In normal use, the flow rate of water can be controlled, indirectly achieving the effect of water saving. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0025] Figure 1 This is a front view structural diagram of the present invention;

[0026] Figure 2 This is a cross-sectional front view of the structure of the present invention;

[0027] Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged structure of A in the middle;

[0028] Figure 4 For the present invention Figure 2 Schematic diagram of the enlarged structure of B;

[0029] Figure 5 For the present invention Figure 2 Schematic diagram of the enlarged C-shaped structure;

[0030] Figure 6 This is a schematic diagram of the arc-shaped groove structure on the turntable of the present invention;

[0031] Figure 7 This is a side view of the cross-sectional structure of the connection between the fixing plate and the fixing element of the present invention;

[0032] Figure 8 This is a side view of the connection between the fixing disc and the fixing element of the present invention;

[0033] Figure 9 This is a schematic diagram of the slide bar structure of the present invention;

[0034] Figure 10 This is a schematic diagram of the pre-grooved slot structure of the PVC plastic pipe of the present invention.

[0035] Explanation of icon numbers:

[0036] 1. Sprayer; 11. Rod; 12. Spray head; 2. Fixed sealing assembly; 21. Slide rod; 211. Connecting rod; 212. Slip ring; 22. Connecting rod; 23. Turntable; 24. Fixed plate; 25. Fixing component; 251. Clamping plate; 252. Spring A; 253. Rubber cloth; 3. Limiting assembly; 31. Handle; 32. Locking rod; 33. Spring B; 34. Support rod; 35. Push rod; 36. Push ring; 4. Water-saving assembly; 41. Fixed rod; 42. Crossbar; 43. Spring C; 44. Baffle.

[0037] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0039] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0040] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0041] Reference Figures 1 to 10 The present invention proposes a negative pressure sprayer for PVC plastic pipes, including a sprayer 1, the sprayer 1 including a rod 11 and a spray head 12, the rod 11 is provided with a fixed sealing component 2 inside, the surface of the rod 11 is provided with a limit component 3, and an annular sliding groove is provided on the inner wall of the rod 11.

[0042] In this embodiment of the invention, the fixed sealing assembly 2 includes:

[0043] The slide rod 21 has its two ends slidably mounted on the inner side of the annular groove on the inner wall of the rod body 11;

[0044] Link 22, the right side of link 22 is fixed to the left side of slide bar 21;

[0045] Turntable 23, the right side of turntable 23 is fixed to the left side of connecting rod 22;

[0046] Fixed plate 24 is fixed on the inner wall of rod 11, and the right side of fixed plate 24 is rotatably connected to turntable 23;

[0047] The fastener 25 is provided on the left side of the fixing plate 24.

[0048] Specifically, the fixed sealing assembly 2 includes a slide rod 21, a connecting rod 22, a turntable 23, a fixed plate 24, and a fixing member 25. The turntable 23 has an arc-shaped groove, and the fixed plate 24 has a vertical groove.

[0049] In one embodiment of the present invention, the fixing member 25 includes a clamping plate 251, which is slidably mounted on a vertical groove on a fixed disk 24 and an arc-shaped groove on a turntable 23. A spring A252 is fixed to the inner side of the vertical groove on the fixed disk 24. One end of the spring A252 away from the fixed disk 24 is fixed to the clamping plate 251. Three sets of clamping plates 251 and springs A252 are provided, and the three sets of clamping plates 251 and springs A252 are arranged in a circular array with the center point of the fixed disk 24 as the center. The side of the three sets of clamping plates 251 away from the center of the fixed disk 24 is fixed. A rubber sheet 253 is fixed, with one end of the rubber sheet 253 away from the clamping plate 251 fixed to the inner wall of the rod 11. When the turntable 23 rotates, the clamping plate 251 is limited by the vertical sliding groove on the fixed plate 24, and the clamping plate 251 can move to the side closer to the center of the turntable 23 to clamp the PVC plastic pipe. At the same time, the rubber sheet 253 is stretched, which can ensure the sealing of the connection between the rod 11 and the PVC plastic pipe. Moreover, the clamping plate 251 is a rubber plate, which has a certain degree of deformability, and can better clamp the PVC plastic pipe.

[0050] Please continue reading. Figure 1-10 The limiting component 3 includes a handle 31, which is penetrated by and fixedly connected to the rod 11. A groove is provided on the inner side of the handle 31, and a locking rod 32 is slidably installed on the inner side of the groove of the handle 31. The locking rod 32 penetrates the rod 11 and is slidably connected to the rod 11. A spring B33 is fixed at the end of the locking rod 32 away from the rod 11. The end of the spring B33 away from the locking rod 32 is fixed in the groove on the inner side of the handle 31. A support rod 34 is hinged to the left side of the locking rod 32. A push rod 35 is hinged to the end of the support rod 34 away from the locking rod 32. The push rod 35 penetrates the handle 31 and is slidably connected to the handle 31. A push ring 36 is fixed to the left side of the push rod 35. The push ring 36 is penetrated by and slidably connected to the rod 11. By pushing the push ring 36 to the right, the push ring 36 moves the push rod 35 to the right. The push rod 35 can push the locking rod 32 to the side away from the rod 11 through the support rod 34.

[0051] Additionally, a groove is provided on the inner wall of the rod 11, and a water-saving component 4 is installed inside the rod 11. The water-saving component 4 includes a fixing rod 41, which is fixed to the inner wall of the rod 11. The fixing rod 41 is penetrated by a crossbar 42 and slidably connected to the crossbar 42. A spring C43 is fixed to the right side of the fixing rod 41, and the end of the spring C43 away from the fixing rod 41 is fixed to the crossbar 42. A baffle 44 is fixed to the right side of the crossbar 42. The baffle 44 can abut against the groove on the inner wall of the rod 11, preventing water droplets from passing through. When the PVC plastic connected to the sprayer 1... After the feed pipe is connected to the water source, as the water flows into the interior of the rod 11, the water impact pushes the baffle 44 to the right, so that the baffle 44 no longer blocks the rod 11, allowing water to pass through the rod 11 and be sprayed out through the spray head 12. When the water source is turned off, the baffle 44 can no longer be subjected to sufficient impact force. Under the action of the spring C43, the crossbar 42 moves the baffle 44 to the left to reset and block the rod 11 again, preventing water inside the rod 11 from passing through. In normal use, the flow rate of water can be controlled, which indirectly saves water.

[0052] To ensure the stability of the connection with the PVC plastic pipe, the slide rod 21 is composed of a connecting rod 211 and a slip ring 212. The slip ring 212 is slidably installed on the inner side of the annular groove on the inner wall of the rod body 11. The connecting rod 211 is fixed on the inner side of the slip ring 212. A slot is opened on the surface of the slip ring 212, which is used in conjunction with the locking rod 32 to limit the movement of the slip ring 212.

[0053] In an embodiment of the present invention, both the fixed disk 24 and the turntable 23 have through holes in their centers, allowing PVC plastic tubes to be inserted.

[0054] In this invention, during use, a slot is made on the PVC plastic tube that needs to be connected to the sprayer 1. The PVC plastic tube is inserted from the left side of the rod 11. The PVC plastic tube passes through the through hole in the center of the fixed plate 24 and the turntable 23. The slot on the PVC plastic tube is aligned with the connecting rod 211 and inserted, so that the connecting rod 211 is in the slot of the PVC plastic tube. At this time, the PVC plastic tube is rotated, and the PVC plastic tube rotates against the connecting rod 211 and the slip ring 212. The slip ring 212 rotates the turntable 23 through the connecting rod 22. Since the clamping plate 251 is limited by the vertical sliding groove on the fixed plate 24, the clamping plate 251 can move to the side closer to the center of the turntable 23 to clamp the PVC plastic tube. At the same time, the rubber cloth 253 is stretched, which can ensure the sealing of the connection between the rod 11 and the PVC plastic tube.

[0055] At this time, the groove on the surface of the slip ring 212 rotates to the position of the locking rod 32. Under the action of the spring B33, the locking rod 32 is inserted into the groove on the surface of the slip ring 212 to limit the slip ring 212, ensuring that the clamping plate 251 cannot move under the action of the spring A252, thus ensuring the stability of the connection between the PVC plastic pipe and the rod 11.

[0056] The PVC plastic pipe connected to the rod 11 is connected to the water source. The water flows into the interior of the rod 11 through the PVC plastic pipe. As the water flows in, the pressure generated by the water flow on the baffle 44 gradually increases. The baffle 44 is pushed to the right and no longer presses against the groove on the inner wall of the rod 11. The water flows out through the rod 11 and sprays out through the spray head 12.

[0057] After use, the water supply is turned off, and the baffle 44 can no longer be subjected to sufficient impact force. Under the action of the spring C43, the crossbar 42 moves the baffle 44 to the left to reset and block the rod 11 again, so that the water inside the rod 11 cannot pass through. In normal use, the flow of water can be controlled, which indirectly saves water.

[0058] When it is necessary to separate the PVC plastic tube from the sprayer 1, simply push the push ring 36 to the right. The push ring 36 moves the push rod 35 to the right. The push rod 35 can push the locking rod 32 to the side away from the rod body 11 through the support rod 34. The locking rod 32 exits from the slot on the surface of the slip ring 212, thereby releasing the restriction on the slip ring 212. At this time, reverse the PVC plastic tube. The PVC plastic tube, along with the connecting rod 211 and the slip ring 212, reverses. With the cooperation of the spring A252, the clamp 251 moves to the side away from the center of the fixed plate 24, thereby releasing the PVC plastic tube. The PVC plastic tube can then be pulled out from the inside of the rod body 11 to complete the separation.

[0059] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A negative pressure sprayer for PVC plastic pipes, comprising a sprayer (1), said sprayer (1) comprising a rod (11) and a spray head (12), characterized in that: The rod (11) is provided with a fixed sealing assembly (2) inside, and a limit assembly (3) is provided on the surface of the rod (11). An annular groove is provided on the inner wall of the rod (11). The fixed sealing assembly (2) includes: Linkage (22), the right side of which is fixed to the left side of slide rod (21); turntable (23), the right side of which is fixed to the left side of link (22); fixed plate (24), which is fixed to the inner wall of rod body (11), and the right side of fixed plate (24) is rotatably connected to turntable (23); fixing member (25), a fixing member (25) is provided on the left side of fixed plate (24); an arc-shaped sliding groove is provided on turntable (23), and a vertical sliding groove is provided on fixed plate (24); the fixing member (25) includes clamping plate (251), which is slidably installed on the vertical sliding groove on fixed plate (24) and the arc-shaped sliding groove on turntable (23), and a spring A (252) is fixed on the inner side of the vertical sliding groove of fixed plate (24). The end of spring A (252) away from the fixed plate (24) is fixed to the clamp (251). The clamp (251) and spring A (252) are each provided in three sets, and the three sets of clamp (251) and spring A (252) are arranged in a circular array with the center point of the fixed plate (24) as the center. A rubber cloth (253) is fixed on the side of the three sets of clamp (251) away from the center of the fixed plate (24). The end of the rubber cloth (253) away from the clamp (251) is fixed on the inner wall of the rod (11). The slide rod (21) is composed of a connecting rod (211) and a slip ring (212). The slip ring (212) is slidably installed on the inner side of the annular groove on the inner wall of the rod (11). The connecting rod (211) is fixed on the inner side of the slip ring (212). A slot is opened on the surface of the slip ring (212).

2. The negative pressure sprayer for PVC plastic pipes as described in claim 1, characterized in that: The limiting component (3) includes a handle (31), which is penetrated by the rod (11) and fixedly connected to the rod (11). A groove is provided on the inner side of the handle (31), and a locking rod (32) is slidably installed on the inner side of the groove of the handle (31). The locking rod (32) penetrates the rod (11) and is slidably connected to the rod (11). A spring B (33) is fixed at the end of the locking rod (32) away from the rod (11).

3. A negative pressure sprayer for PVC plastic pipes as described in claim 2, characterized in that: The end of the spring B (33) away from the lever (32) is fixed in the groove inside the handle (31). A support rod (34) is hinged to the left side of the lever (32). A push rod (35) is hinged to the end of the support rod (34) away from the lever (32). The push rod (35) passes through the handle (31) and is slidably connected to the handle (31). A push ring (36) is fixed to the left side of the push rod (35). The push ring (36) is passed through the rod body (11) and is slidably connected to the rod body (11).

4. A negative pressure sprayer for PVC plastic pipes as described in claim 1, characterized in that: The inner wall of the rod (11) is provided with a groove.

5. A negative pressure sprayer for PVC plastic pipes as described in claim 1, characterized in that: The inside of the rod body (11) is provided with a water-saving component (4). The water-saving component (4) includes a fixed rod (41). The fixed rod (41) is fixed on the inner wall of the rod body (11). The fixed rod (41) is penetrated by a crossbar (42) and is slidably connected to the crossbar (42). A spring C (43) is fixed on the right side of the fixed rod (41). The end of the spring C (43) away from the fixed rod (41) is fixed to the crossbar (42). A baffle (44) is fixed on the right side of the crossbar (42).

6. A negative pressure sprayer for PVC plastic pipes as described in claim 1, characterized in that: Both the fixed disk (24) and the turntable (23) have through holes at their centers.

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