Noise-reducing hard PVC (polyvinyl chloride) drainage pipe

Abstract

The utility model relates to a noise reduction hard PVC drainage pipe which comprises a pipe fitting and a buffering assembly arranged in the pipe fitting, the buffering assembly comprises a first buffering piece and a second buffering piece, the first buffering piece is conical, a connecting rod is fixedly arranged on the first buffering piece, and the end, away from the first buffering piece, of the connecting rod is fixedly connected to the inner wall of the pipe fitting; the second buffer part is fixedly arranged on the inner wall of the pipe fitting, a water passing hole used for communicating the upper end face and the lower end face of the second buffer part is formed in the second buffer part, the inner wall of the water passing hole is divided into a first buffer face, a second buffer face and a third buffer face from top to bottom, and the first buffer face and the third buffer face are arranged in a mirror image mode along the horizontal plane in the middle of the water passing hole; the upper side edge of the first buffering face is obliquely arranged in the direction away from the axis of the water passing hole. The upper end opening diameter of the second buffering face is smaller than the lower end face diameter of the first buffering piece. The noise reduction effect of the drainage pipe is effectively enhanced.

Description

Technical Field

[0001] The present application relates to the technical field of PVC drain pipes, and particularly to a noise-reducing rigid PVC drain pipe. Background Art

[0002] Currently, there are many pipes on the market. Some pipes are used to transport water, and some are used to transport oil. Most pipes have a single-layer pipe wall with a smooth inner wall. When a liquid flows in the pipe: when the water or oil in the pipe fills the pipe, generally little noise is generated, but when the water or oil in the pipe does not fill the pipe and gas and liquid are mixed, noise will be generated in the pipe.

[0003] Chinese Patent with Application No. 201621228531.7 discloses a shock-absorbing and noise-reducing PVC elbow fitting, which includes an inlet pipe and an outlet pipe with perpendicular axes, and also includes a spring and a horn-shaped shock-absorbing sleeve. The diameter of the large-diameter end of the shock-absorbing sleeve is the same as the inner diameter of the inlet pipe, and a circular sleeve-shaped connecting sleeve extends from the small-diameter end. The inlet pipe is vertically arranged, and a sealing cap is connected to the bottom end. A circular connecting platform is provided on the sealing cap.

[0004] This application uses a shock-absorbing sleeve to buffer the flow in the pipe appropriately. However, since the shock-absorbing sleeve is provided with a central opening, when the water flow falls along the center point of the pipe, the shock-absorbing sleeve cannot effectively reduce the noise and vibration of the water flow.

[0005] Therefore, a new technical solution needs to be proposed to solve the above problems. Utility Model Content

[0006] In order to further enhance the noise reduction effect of the PVC drain pipe, the present application provides a noise-reducing rigid PVC drain pipe.

[0007] The noise-reducing rigid PVC drain pipe provided by the present application adopts the following technical solutions:

[0008] A noise-reducing rigid PVC drain pipe includes a pipe fitting and a buffer assembly arranged inside the pipe fitting. The buffer assembly includes a first buffer member and a second buffer member. The first buffer member is conical. A connecting rod is fixedly arranged on the first buffer member. One end of the connecting rod far from the first buffer member is fixedly connected to the inner wall of the pipe fitting. The second buffer member is fixedly arranged on the inner wall of the pipe fitting. Water passing holes for communicating the upper and lower end faces of the second buffer member are arranged on the second buffer member. The inner wall of the water passing hole is divided into a first buffer surface, a second buffer surface, and a third buffer surface from top to bottom. The first buffer surface and the third buffer surface are arranged in mirror symmetry along the middle horizontal plane of the water passing hole. The upper side edge of the first buffer surface is inclined in a direction away from the axis of the water passing hole. The upper end opening diameter of the second buffer surface is smaller than the lower end face diameter of the first buffer member.

[0009] By adopting the above technical solution, when the water flow in the pipe fitting drops, part of the water flow drips onto the first buffer member, achieving the first-step buffering effect on the water flow. The water flow on the first buffer member slides down along the side wall of the first buffer member to the first buffer surface. For the water flow that directly drips onto the first buffer surface from the first buffer member, it is mixed with the water flow sliding down from the first buffer member. The mixed water flow on the first buffer surface drips downward through the second buffer surface and the third buffer surface, effectively achieving the buffering and noise reduction effect on the water flow.

[0010] Optionally: The first buffer surface is an arc-shaped surface that is concave toward the side away from the water passing hole.

[0011] By adopting the above technical solution, the included angle between the water flow on the first buffer member and the first buffer surface is reduced, thereby effectively reducing the impact force of the water flow from the first buffer member to the first buffer surface, so as to achieve a better buffering effect on the water flow.

[0012] Optionally: The second buffer surface is an arc-shaped surface, and the diameter of the middle part of the second buffer surface is smaller than the diameters of the upper and lower openings of the second buffer surface.

[0013] By adopting the above technical solution, when the water flow passes through the water passing hole, the water flow slides down along the first buffer surface to the second buffer surface, ensuring the smoothness of the water flow. It slides down along the inner wall of the water passing hole to the third buffer surface, enhancing the noise reduction effect on the water flow.

[0014] Optionally: Rubber layers are provided on the surfaces of the first buffer member and the second buffer member.

[0015] By adopting the above technical solution, the impact force of the water flow dripping onto the first buffer member and the second buffer member is reduced, further achieving the noise reduction effect inside the pipe fitting.

[0016] Optionally: There are three connecting rods, and the three connecting rods are arranged circumferentially along the axis of the first buffer member.

[0017] By adopting the above technical solution, the installation stability of the first buffer member is ensured.

[0018] Optionally: A buffer net is provided inside the pipe fitting.

[0019] By adopting the above technical solution, several layers of buffer nets are provided inside the pipe fitting. When the water flow drips onto the buffer nets inside the pipe fitting, further buffering effect on the water flow is achieved through the buffer nets.

[0020] Optionally: A sound insulation layer is provided on the outer wall of the pipe fitting, and a plastic sealing layer is wrapped outside the sound insulation layer.

[0021] By adopting the above technical solution, further sound insulation treatment is carried out on the outer wall of the pipe fitting. At the same time, setting the plastic sealing layer can also perfectly wrap the sound insulation layer and form a protection for the sound insulation layer.

[0022] Optionally, there is an adhesion between the outer wall of the pipe fitting, the plastic encapsulation layer and the sound insulation layer.

[0023] By adopting the above technical solution, the adhesion is simple and firm.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. By providing the first buffer member and the second buffer member, when water flows through the pipe fitting, a buffering effect on the water flow is achieved.

[0026] 2. By adjusting the angle of the inner wall of the water passing hole, the impact force of the water flow on the second clamping member is reduced.

[0027] 3. By providing the buffer mesh and the sound insulation cotton, the buffering effect inside the pipe fitting is further achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic cross-sectional structure view of an embodiment of the present application.

[0029] In the figure, 1 is a pipe fitting; 11 is a sound insulation layer; 12 is a plastic encapsulation layer; 2 is a buffer assembly; 21 is a first buffer member; 211 is a connecting rod; 22 is a second buffer member; 221 is a water passing hole; 2211 is a first buffer surface; 2212 is a second buffer surface; 2213 is a third buffer surface; 3 is a rubber layer; 4 is a buffer mesh. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The following further describes the present application in detail with reference to the drawings.

[0031] A noise-reducing rigid PVC drain pipe disclosed in the present application, as Figure 1 shown, includes a pipe fitting 1 and a buffer assembly 2 disposed inside the pipe fitting 1. The buffer assembly 2 includes a first buffer member 21 and a second buffer member 22. The first buffer member 21 is a cone, and the axis of the first buffer member 21 coincides with the axis of the pipe fitting 1. Three connecting rods 211 for fixedly connecting the first buffer member 21 to the pipe fitting 1 are provided on the first buffer member 21. The three connecting rods 211 are fixedly disposed on the side wall of the first buffer member 21. In order to enhance the support of the connecting rod 211 for the first buffer member 21, the connecting rod 211 is a flat connecting rod 211. The three connecting rods 211 are circumferentially arranged along the axis of the first buffer member 21. The end of the connecting rod 211 away from the first buffer member 21 is fixedly connected to the inner wall of the pipe fitting 1. A gap for the water flow to fall is left between the outside of the first buffer member 21 and the inner wall of the pipe fitting 1.

[0032] The second buffer member 22 is fixedly arranged on the inner wall of the pipe fitting 1. A water passing hole 221 for communicating the upper and lower end faces of the second buffer member 22 is arranged on the second buffer member 22. The axis of the water passing hole 221 coincides with the axis of the pipe fitting 1. The diameter of the upper opening of the water passing hole 221 is smaller than the diameter of the lower end face of the first buffer member 21, preventing the water flow in the pipe from directly falling between the water passing hole 221 and the first buffer member 21 and affecting the buffering effect on the water flow.

[0033] The inner wall of the water passing hole 221 is divided into a first buffer surface 2211, a second buffer surface 2212 and a third buffer surface 2213 from top to bottom. The first buffer surface 2211 and the third buffer surface 2213 are arranged in mirror symmetry along the middle horizontal plane of the second buffer surface 2212. The upper side edge of the first buffer surface 2211 is inclined away from the axis of the water passing hole 221. The upper side edge of the first buffer surface 2211 is in contact with the inner wall of the pipe fitting 1. The upper side edge of the first buffer surface 2211 is higher than the lower end face of the first buffer member 21 in the horizontal position, ensuring that the water flow on the first buffer member 21 can all slide onto the first buffer surface 2211. In order to further enhance the buffering effect of the first buffer surface 2211 on the water flow, the first buffer surface 2211 is an arc surface recessed away from the axis of the water passing hole 221, reducing the angle between the water flow on the first buffer member 21 and the first buffer surface 2211, making the water flow more smooth when being transported from the first buffer member 21 to the first buffer surface 2211, so as to achieve a better buffering effect on the water flow.

[0034] In order to further enhance the buffering effect of the water passing hole 221 on the water flow, the second buffer surface 2212 is arranged as an arc surface. The diameter of the middle part of the second arc surface is smaller than the diameters of the upper and lower openings of the second arc surface, so that when the water flow passes through the water passing hole 221, it slides down along the inner wall of the water passing hole 221 to the third buffer surface 2213, enhancing the noise reduction effect on the water flow.

[0035] In order to reduce the impact force of the water flow on the first buffer member 21 and the second buffer member 22, rubber layers 3 are arranged on the surfaces of the first buffer member 21 and the second buffer member 22. The rubber layers 3 are adhered to the surfaces of the first buffer member 21 and the second buffer member 22 through waterproof glue.

[0036] A plurality of buffer nets 4 are arranged in the pipeline. The buffer nets 4 are arranged below the second buffer member 22. The plurality of buffer nets 4 are uniformly arranged in the vertical direction to achieve a further buffering effect on the water flow. A sound insulation layer 11 for further noise reduction treatment of the pipe fitting 1 is also arranged on the outer wall of the pipe fitting 1. The sound insulation layer 11 is made of high-density rubber and plastic foaming material, which has flame retardant and impact resistance properties. The excellent impact resistance property can reduce the vibration generated when the water flow impacts, having a shock absorption effect. At the same time, the high-density property can also play a sound absorption role. The outer of the sound insulation layer 11 is a plastic sealing layer 12. The sound insulation layer 11 and the plastic sealing layer 12 are adhesively connected through an adhesive layer, and the two are closely attached to jointly play the functions of shock absorption, sound insulation and noise reduction.

[0037] The implementation principle of this embodiment is as follows:

[0038] By arranging a first buffer member 21 and a second buffer member 22 inside the pipe fitting 1, when the water flow in the pipe fitting 1 drops, part of the water flow drips onto the first buffer member 21. The water flow on the first buffer member 21 slides down along the side wall of the first buffer member 21 to the first buffer surface 2211. The water flow on the first buffer surface 2211 drips downward onto the buffer mesh 4 through the second buffer surface 2212 and the third buffer surface 2213, effectively achieving the buffering effect on the water flow. At the same time, by arranging a sound insulation layer 11 and a plastic sealing layer 12, the sound insulation effect of the pipe fitting 1 is further enhanced.

[0039] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A noise-reducing rigid PVC drainage pipe, characterized in that: The invention comprises a pipe (1) and a buffer component (2) arranged in the pipe (1), wherein the buffer component (2) comprises a first buffer component (21) and a second buffer component (22), wherein the first buffer component (21) is conical, a connecting rod (211) is fixedly arranged on the first buffer component (21), an end of the connecting rod (211) away from the first buffer component (21) is fixedly connected to the inner wall of the pipe (1), the second buffer component (22) is fixedly arranged on the inner wall of the pipe (1), and a connecting rod (211) for connecting the second buffer component (22) is provided on the second buffer component (22). A water passage hole (221) is provided at the upper and lower end surfaces, wherein the inner wall of the water passage hole (221) is divided from top to bottom into a first buffer surface (2211), a second buffer surface (2212) and a third buffer surface (2213), wherein the first buffer surface (2211) and the third buffer surface (2213) are arranged in a mirror image along a horizontal plane in the middle of the water passage hole (221), wherein the upper side edge of the first buffer surface (2211) is arranged in an inclined direction away from the axis of the water passage hole (221), and the upper end opening diameter of the second buffer surface (2212) is smaller than the lower end surface diameter of the first buffer component (21).

2. A noise-reducing rigid PVC drainage pipe according to claim 1, characterized in that: The first buffer surface (2211) is an arc-shaped surface that is concave toward a side away from the water passage hole (221).

3. The noise-reducing rigid PVC drainage pipe according to claim 1, characterized in that: The second buffer surface (2212) is an arc-shaped surface, and the diameter of the middle portion of the second buffer surface (2212) is smaller than the diameters of the upper and lower openings of the second buffer surface (2212).

4. The noise-reducing rigid PVC drainage pipe according to claim 1, characterized in that: The surfaces of the first buffer member (21) and the second buffer member (22) are both provided with a rubber layer (3).

5. The noise-reducing rigid PVC drainage pipe according to claim 1, characterized in that: There are three connecting rods (211), and the three connecting rods (211) are arranged circumferentially along the axis of the first buffer component (21).

6. The noise-reducing rigid PVC drainage pipe according to claim 1, characterized in that: A buffer net (4) is arranged inside the pipe (1).

7. The noise-reducing rigid PVC drainage pipe according to claim 1, characterized in that: The outer wall of the pipe (1) is provided with a sound insulation layer (11), and the sound insulation layer (11) is wrapped with a plastic sealing layer (12).

8. The noise-reducing rigid PVC drainage pipe according to claim 7, characterized in that: The outer wall of the pipe (1), the plastic sealing layer (12) and the sound insulation layer (11) are bonded together.

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