Impeller type composite pipe

Abstract

The utility model discloses an impeller type composite pipe which comprises a pipe body and a plurality of impellers surrounding the periphery of the pipe body, each impeller is of a hollow structure, and the front side and the rear side of each impeller are sunken to form grooves. The depth of the groove in the axial direction of the pipe body is d1, and the thickness of the impeller in the axial direction of the pipe body is t; d1 / tgt; when 1 / 3 of the impeller is arranged, a plurality of grooves are formed and distributed around the axis of the tube body in an annular array mode, and the grooves in the front side of the impeller and the grooves in the rear side of the impeller are staggered; d1 / tlt; when the ratio is equal to 1 / 3, the grooves surround the periphery of the impeller in a wave shape, and an annular convex rib is formed between the grooves in the front side and the rear side. The utility model provides an impeller type composite pipe, which improves the deformation resistance of an impeller without influencing the rolling of the impeller.

Description

TECHNICAL FIELD

[0001] The utility model relates to composite pipe technical field especially relates to a pulsator type composite pipe. BACKGROUND

[0002] The pulsator type composite pipe has the advantages of light weight, high strength and convenient installation, and is widely used in municipal engineering.

[0003] The existing composite pipe, such as the double-wall pulsator pipe shown in the application number CN201822060634.2, comprises a pipe body and an annular pulsator arranged outside the pipe body. The above-mentioned pulsator is a hollow annular structure, which increases the ring stiffness of the double-wall pulsator pipe as a whole. The outer periphery of the pulsator is circular, which is convenient for carrying in the form of rolling. However, the pulsator has poor deformation resistance, and the pulsator is prone to collapse downward when the on-site construction personnel press the pulsator with their fingers, giving the feeling that the product has insufficient ring stiffness.

[0004] Another composite pipe, such as the appearance patent shown in the application number CN202130059822.8, has grooves arranged at equal intervals on the outer periphery of the pulsator. Although the pulsator is not prone to deformation, it makes the pulsator wavy, which is not convenient for carrying in the form of rolling. UTILITY MODEL CONTENTS

[0005] The utility model proposes a pulsator type composite pipe to solve the above-mentioned defects of the existing composite pipe, which improves the deformation resistance of the pulsator while not affecting its rolling.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0007] A pulsator type composite pipe comprises a pipe body and a plurality of pulsators arranged around the outer periphery of the pipe body. The pulsator is a hollow structure, and grooves are formed on the front and back sides of the pulsator. The depth of the groove in the axial direction of the pipe body is d1, and the thickness of the pulsator in the axial direction of the pipe body is t. When d1 / t>1 / 3, the groove is arranged in a plurality of annular arrays around the axis of the pipe body, and the groove on the front side of the pulsator is staggered with the groove on the back side of the pulsator. When d1 / t<=1 / 3, the groove is arranged in a wave shape around the outer periphery of the pulsator, and the grooves on the front and back sides form an annular rib.

[0008] Through the above-mentioned arrangement, first, the groove improves the deformation resistance of the pulsator, and the pulsator is not prone to deformation when pressed. Second, although the groove is arranged, the outer periphery of the pulsator is still circular, and the composite pipe can still be smoothly rolled for carrying. Third, the arrangement of the groove increases the outer surface area of the composite pipe and improves the anti-soil loss performance of the composite pipe.

[0009] Further, when d1 / t>1 / 3, the depth of the groove in the radial direction of the pipe body is d2, the height of the pulsator in the radial direction of the pipe body is h, and 1 / 2<d2 / h<=1.

[0010] Through the above setting, the ring stiffness of the composite pipe is effectively improved.

[0011] Further, when d1 / t>1 / 3, the distance between the notch of the front groove and the notch of the adjacent groove at the rear side in any one wave wheel is d3, and 2cm<d3<5cm.

[0012] Further, when d1 / t<=1 / 3, the groove bottom is connected by a plurality of circular arc segments and a plurality of straight line segments.

[0013] Further, the pipe body and the wave wheel are integrally formed.

[0014] Further, the groove edge is rounded. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic view of the composite pipe of the first embodiment.

[0016] Figure 2 is a side view of the composite pipe of the first embodiment.

[0017] Figure 3 is a sectional view of the wave wheel of the first embodiment.

[0018] Figure 4 is a schematic view of the composite pipe of the second embodiment.

[0019] Figure 5 is a side view of the composite pipe of the second embodiment.

[0020] Figure 6 is a sectional view of the wave wheel of the second embodiment.

[0021] Figure 7 is a schematic view of the composite pipe of the third embodiment.

[0022] Figure 8 is a side view of the composite pipe of the third embodiment.

[0023] Figure 9 is a sectional view of the wave wheel of the third embodiment. DETAILED DESCRIPTION

[0024] The technical scheme of the present application will be further specifically described below by means of embodiments and in conjunction with the drawings.

[0025] As shown in the drawings, Figures 1 to 9 A wave wheel type composite pipe comprises a pipe body 3, a plurality of wave wheels 4 surrounding the outer periphery of the pipe body 3, the wave wheel 4 being a hollow structure, and the wave wheel 4 being recessed at the front and rear sides to form grooves 5.

[0026] The depth of the groove 5 in the axial direction of the pipe body 3 is d1, and the thickness of the impeller 4 in the axial direction of the pipe body 3 is t;

[0027] When d1 / t>1 / 3, the groove 5 is provided with a plurality of annular arrays around the axis of the pipe body 3, and the groove 5 on the front side of the impeller 4 is staggered with the groove 5 on the rear side of the impeller 4;

[0028] When d1 / t<=1 / 3, the groove 5 is in a wave shape around the outer periphery of the impeller 4, and the annular protruding ribs 6 are formed between the grooves 5 on the front and rear sides.

[0029] Through the above arrangement, first, the groove 5 improves the deformation resistance of the impeller 4, and the impeller 4 is not easy to deform when pressed; second, although the groove 5 is provided, the outer periphery of the impeller 4 is still circular, and the composite pipe can still be smoothly rolled for transportation; third, the setting of the groove 5 increases the outer surface area of the composite pipe and improves the water and soil loss prevention performance of the composite pipe.

[0030] The cross section of the impeller 4 of the present application is basically isosceles trapezoidal, as shown in Figure 3 The top of the impeller 4, i.e., the side of the impeller 4 away from the pipe body 3 is parallel to the pipe body 3, and the front and rear sides of the impeller 4 are the waist of the impeller 4, which are symmetrically arranged; the impeller 4 is a hollow structure, and the thickness of the waist of the impeller 4 is basically the same as that of the top; the groove 5 is formed by the depression of the front and rear sides of the impeller 4; the form of the groove 5 is roughly divided into two kinds according to the depth d1 of the groove 5 in the axial direction of the pipe body 3, the first kind of groove 5, as shown in Figures 1 to 3 When the depth d1 of the groove 5 in the axial direction of the pipe body 3 is large, the front side of the impeller 4 is provided with a plurality of grooves 5 along the circumference, the rear side of the impeller 4 is provided with a plurality of grooves 5 along the circumference, the grooves 5 on the front side are staggered with the grooves 5 on the rear side, which prevents the grooves 5 from penetrating the front and rear sides of the impeller 4, so that the outer periphery of the impeller 4 remains circular; the second kind of groove 5 is as shown in 7 to Figure 9As shown in the figure, the depth d1 of the groove 5 in the axial direction of the pipe body 3 is relatively small. The groove 5 is arranged around the impeller 4 in a 360-degree manner. The sum of the depths of the grooves 5 on the front and rear sides is less than the thickness t of the impeller 4, that is, the grooves 5 on the front and rear sides do not penetrate through the front and rear sides of the impeller 4, and an annular rib 6 is formed between the grooves 5 on the front and rear sides. The annular rib 6 keeps the outer periphery of the impeller 4 still circular; the above two forms of the groove 5 both keep the outer periphery of the impeller 4 circular, that is, it does not affect the rolling handling of the composite pipe; the top of the traditional impeller 4 is relatively flat and has a small stiffness. When the construction worker presses the top of the impeller 4 with a finger, the top of the impeller 4 is prone to sink and deform; due to the setting of the groove 5, the top of the impeller 4 of the composite pipe in this application becomes uneven, and the stiffness of the top of the impeller 4 is greater. When the on-site construction worker presses the groove 5 with a finger, the groove 5 itself sinks, and the groove 5 will not sink and deform when pressed, while a protrusion is formed on the top of the impeller 4 between the grooves 5, and the stiffness is greater, and the on-site construction worker will basically not sink and deform when pressing with a finger; in addition, the setting of the groove 5 increases the outer surface area of the composite pipe. When the composite pipe is buried underground, the contact area between the composite pipe and the underground soil is larger, effectively preventing soil erosion.

[0031] As a realization method, when d1 / t > 1 / 3, the depth of the groove 5 in the radial direction of the pipe body 3 is d2, the height of the impeller 4 in the radial direction of the pipe body 3 is h, and 1 / 2 < d2 / h <= 1.

[0032] Through the above settings, the ring stiffness of the composite pipe is effectively improved.

[0033] As Figure 3 shown, it extends along the outer surface of the waist of the impeller 4 away from the pipe body 3 and intersects with the plane where the top of the impeller 4 is located to form two annular intersection lines. The distance between the two above intersection lines is the thickness t of the impeller 4. The side wall of the groove 5 is perpendicular to the pipe body 3. The distance from the intersection line on the side close to the groove 5 to the side wall of the groove 5 is the depth d1 of the groove 5 in the axial direction of the pipe body 3. The bottom of the groove 5 is parallel to the pipe body 3. The distance from the top of the impeller 4 to the bottom of the groove 5 is the depth d2 of the groove 5 in the radial direction of the pipe body 3. The distance from the top of the impeller 4 to the pipe body 3 is the height h of the impeller 4 in the radial direction of the pipe body 3; the side wall of the groove 5 of this application is perpendicular to the pipe body 3 and has the function of a reinforcing rib. When 1 / 2 < d2 / h <= 1, the larger d2 is, the more obvious the reinforcing rib effect is, and the greater the ring stiffness of the composite pipe. As Figures 4 to 6 shown, d2 / h is basically equal to 1, and the ring stiffness of the composite pipe is good.

[0034] As a realization method, when d1 / t > 1 / 3, in any one impeller 4, the distance between the notch of the groove 5 on the front side and the notch of the adjacent groove 5 on the rear side is d3, and < 2 cm < d3 < 5 cm.

[0035] As Figure 2Identified the front and rear side direction of the wave wheel 4, the front side of the groove 5 notch and the rear side of the groove 5 have two adjacent grooves 5, the front side of the groove 5 and the rear side of any one adjacent groove 5 distance d3, d3 all meet the following conditions, namely, 2cm < d3 < 5cm.

[0036] As an implementation, when d1 / t <= 1 / 3, the groove 5 groove bottom is connected by several circular arc segments 7 and several straight line segments 8, and the circular arc segment 7 is raised away from the pipe body 3.

[0037] The side bottom of the groove 5 of the present application is the groove bottom, and the number of the circular arc segment 7 of the groove bottom of the groove 5 of the present application is 16, and the length of the straight line segment 8 is less than the arc length of the circular arc segment 7, so that the groove 5 groove bottom is wavy and relatively flat, facilitating processing.

[0038] As an implementation, the pipe body 3 and the wave wheel 4 are integrally formed.

[0039] As an implementation, the groove 5 edge is rounded.

[0040] It should be understood that for those skilled in the art, the above description can be improved or changed, and all these improvements and changes shall belong to the protection scope of the appended claims of the present application.

Claims

1. A combined tub in a pulsator washing machine, characterized in that, The utility model relates to a washing machine, including the pipe body, a plurality of around the pipe body periphery impeller, the impeller is hollow structure, the recess is produced the groove to the front and back of the impeller both sides are recessed; The depth of the groove in the axial direction of the pipe body is d1, and the thickness of the impeller in the axial direction of the pipe body is t; When d1 / t>1 / 3, the groove is provided with a plurality of annular array arrangements around the axis of the pipe body, the groove on the front side of the impeller is staggered with the groove on the back side of the impeller; When d1 / t<=1 / 3, the groove is in the form of a wave around the outer periphery of the impeller, and the annular convex rib is formed between the grooves on the front and back sides.

2. A combined tube according to claim 1, characterized in that When d1 / t>1 / 3, the depth of the groove in the radial direction of the pipe body is d2, the height of the impeller in the radial direction of the pipe body is h, and 1 / 2<d2 / h<=1.

3. A combined tube according to claim 2, characterized in that When d1 / t>1 / 3, in any one of the impellers, the distance between the groove opening on the front side and the groove opening adjacent to the back side is d3, and 2cm<d3<5cm.

4. A bellows-type composite tube according to claim 1, wherein When d1 / t<=1 / 3, the groove bottom is connected by a plurality of circular arc segments and a plurality of straight line segments.

5. A bellows-type composite tube according to claim 1, wherein The pipe body and the impeller are integrally formed.

6. A bellows-type composite tube according to claim 1, wherein The groove edge is rounded.

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