Drainage equipment and telescopic drainage pipe device thereof

Abstract

The utility model discloses drainage equipment and a telescopic drainage pipe device thereof, the telescopic drainage pipe device comprises a first forward pipeline, a second forward pipeline and a first supporting ring, the inner diameter of the first forward pipeline is larger than the outer diameter of the second forward pipeline, the second forward pipeline is connected in the first forward pipeline in a sliding mode, and the first supporting ring is connected with the second forward pipeline in a sliding mode. The second forward pipeline extends into the first forward pipeline from a rear end opening of the first forward pipeline, the first supporting ring is arranged in the first forward pipeline and located on the side, close to the front end opening of the first forward pipeline, of the second forward pipeline, and the first supporting ring is provided with a supporting part used for supporting the second forward pipeline. The supporting part can effectively support the second forward pipeline and prevent the second forward pipeline from inclining and shaking, and is beneficial to keeping the second forward pipeline horizontal, so that collision between the first forward pipeline and the second forward pipeline can be reduced, the wear rate of the pipe wall is reduced, and the service life of the device is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to drainage equipment technical field especially, relates to a drainage equipment and its telescopic drainage pipe device. BACKGROUND

[0002] In the existing drainage vehicle, temporary drainage engineering, the traditional fixed length pipeline is difficult to meet the actual demand. In order to solve this problem, telescopic drainage pipe emerges as the times require.

[0003] The structure of telescopic drainage pipe can see the Chinese patent of announcement No. CN201619502U, it discloses that telescopic pipe is composed of elbow pipe, outer pipe, inner pipe, sealing device, drag chain, cylinder, pipe clamp and telescopic oil cylinder, the inner pipe is arranged in the outer pipe through several sealing devices that can play the positioning role, the inner pipe and sealing device are slidingly connected, the outlet end of outer pipe is connected with elbow pipe, one end of telescopic oil cylinder is installed on the outer surface of outer pipe, the other end of telescopic oil cylinder is connected on the outer surface of inner pipe.

[0004] Due to the self weight of inner pipe or the load borne can produce the problem of downward inclination, this inclination not only can cause the knock between inner pipe and outer pipe, causes the pipe wall abrasion, also can make the oil cylinder, cylinder or electric cylinder etc. Linear motion mechanism driving pipeline telescopic occurs deflection, further influence the normal work and life of these linear motion mechanisms. UTILITY MODEL CONTENTS

[0005] Therefore, it is needed to provide a drainage equipment and its telescopic drainage pipe device, solve the problem that due to the self weight of inner pipe or the load borne can produce the problem of downward inclination.

[0006] To realize the above-mentioned purpose, the embodiment provides a telescopic drainage pipe device, which comprises a first forward pipeline, a second forward pipeline and a first supporting ring, the inner diameter of the first forward pipeline is greater than the outer diameter of the second forward pipeline, the second forward pipeline is slidably connected in the first forward pipeline, the second forward pipeline extends from the rear end of the first forward pipeline, the first supporting ring is arranged in the first forward pipeline and located on the side of the second forward pipeline close to the front end of the first forward pipeline, and the first supporting ring is provided with a supporting part for supporting the second forward pipeline.

[0007] Further, it further comprises a first reverse pipeline and a second supporting ring, the inner diameter of the first forward pipeline is greater than the outer diameter of the first reverse pipeline, the second supporting ring slidably connected with the first reverse pipeline is arranged in the front end of the first forward pipeline, the first reverse pipeline extends from the front end of the first forward pipeline, and the first supporting ring is slidably connected outside the first reverse pipeline.

[0008] Further, a second sliding part is arranged on the inner ring of the second support ring which is in sliding connection with the first reverse pipeline.

[0009] Further, the second sliding part is a polytetrafluoroethylene block which is embedded in a mounting groove of the inner ring of the second support ring.

[0010] Further, the first support ring is provided with a first sliding part which is in sliding connection with the inner wall of the first forward pipeline, and the first sliding part is located on the side of the support part close to the front end of the first forward pipeline.

[0011] Further, the first sliding part is a straight cylindrical structure with a length of 20-30mm.

[0012] Further, the inner diameter of the second forward pipeline is greater than the outer diameter of the first reverse pipeline, the first reverse pipeline can be inserted into the second forward pipeline, and the first support ring is provided with a recess for accommodating the second support ring.

[0013] Further, the first linear motion mechanism is arranged at two ends of the first forward pipeline and the second forward pipeline, and is used for pushing the first forward pipeline and the second forward pipeline to slide in a straight line.

[0014] Further, the first support ring is fixedly connected with the first forward pipeline.

[0015] Further, the support part is a first conical inclined surface, the width of the front end of the first conical inclined surface is greater than the width of the rear end of the first conical inclined surface, the front end of the second forward pipeline is provided with a second conical inclined surface for contacting the support part, and the inclination angle of the second conical inclined surface is the same as that of the first conical inclined surface.

[0016] Further, a step is arranged between the first sliding part and the support part.

[0017] Further, the support part is also used for supporting a third forward pipeline, the inner diameter of the second forward pipeline is greater than the outer diameter of the third forward pipeline, the third forward pipeline is slidably connected in the second forward pipeline, the third forward pipeline is inserted from the rear end of the second forward pipeline, the front end of the third forward pipeline is provided with a third conical inclined surface for contacting the support part, and the inclination angle of the third conical inclined surface is the same as that of the first conical inclined surface.

[0018] To achieve the above object, the embodiment provides a drainage equipment, comprising a telescopic drainage pipe device, a turnover frame and a water pump, the telescopic drainage pipe device is the telescopic drainage pipe device in any one of the above embodiments, the first forward pipeline of the telescopic drainage pipe device is arranged on the turnover frame, and the water inlet of the telescopic drainage pipe device is provided with the water pump.

[0019] Compared with the prior art, the above technical scheme has the following beneficial effects:

[0020] By additionally arranging the first support ring in the first forward pipeline and close to the front port, when the second forward pipeline is retracted into the first forward pipeline and contacts the support part of the first support ring, the support part can effectively support the second forward pipeline, prevent the second forward pipeline from tilting and shaking, and help to keep the second forward pipeline horizontal, so that the knocking between the first forward pipeline and the second forward pipeline can be reduced, the abrasion rate of the pipe wall is reduced, and the service life of the device is prolonged. In addition, after the second forward pipeline is kept horizontal, the problem of tilting of the linear motion mechanism such as the oil cylinder, the air cylinder or the electric cylinder driving the pipeline to be telescopic is avoided, and the durability of the linear motion mechanism is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a front view of the drainage equipment in the embodiment;

[0022] Figure 2 It is a front view of the telescopic drainage pipe device in the embodiment; Figure 1

[0023] It is a front view of the telescopic drainage pipe device in the embodiment; Figure 3 Figure 2 It is an enlarged view of the A part in the embodiment;

[0024] Figure 4 It is a perspective view of the first support ring in the embodiment;

[0025] Figure 5 It is a side view of the first support ring in the embodiment.

[0026] BRIEF DESCRIPTION OF DRAWINGS

[0027] 1, first forward pipeline; 11, front port;

[0028] 2, second forward pipeline; 21, second conical slope;

[0029] 3, third forward pipeline; 31, third conical slope;

[0030] 4, first reverse pipeline;

[0031] 5, first support ring; 51, first sliding part; 52, support part; 53, step; 54, groove; 55, notch;

[0032] ​6, second support ring; 61, second sliding part; 62, inner ring;

[0033] 7, third linear motion mechanism;

[0034] 8, turnover frame;

[0035] 9, water pump. DETAILED DESCRIPTION

[0036] To explain the possible application scenarios, technical principles, specific implementation schemes, and the purposes and effects that can be achieved of the present application in detail, the following will be described in detail in combination with the specific embodiments listed and the accompanying drawings. The embodiments described in this paper are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0037] In this paper, the term "embodiment" means that the specific features, structures or characteristics described in combination with the embodiment can be included in at least one embodiment of the present application. The term "embodiment" appearing at various places in the specification does not necessarily refer to the same embodiment, and does not particularly limit the independence or association between other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, each technical feature mentioned in each embodiment can be combined in any way to form a corresponding implementable technical solution.

[0038] Unless otherwise defined, the meaning of the technical terms used in this paper is the same as that generally understood by those skilled in the art to which the present application belongs; the use of related terms in this paper is only for the purpose of describing specific embodiments, and is not intended to limit the present application.

[0039] In the description of the present application, the phrase "and / or" is a description of the logical relationship between the objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this paper generally represents that the associated objects before and after are a kind of "or" logical relationship.

[0040] In the present application, such as "first" and "second", the terms are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, primary and secondary or order relationship between the entities or operations.

[0041] In the present application, the terms "comprise", "contain", "include", or other similar phrases used in the statements mean to encompass non-exclusive inclusion, and the terms do not exclude additional elements or additional steps from the processes, methods or products that include the stated elements, so that the processes, methods or products that include a series of elements can include not only those defined elements, but also other elements not explicitly listed, or also include elements inherent to such processes, methods or products.

[0042] In the present application, the terms "greater than", "less than", "exceed" and the like are understood as not including the number itself, and the terms "above", "below", "within" and the like are understood as including the number itself. In addition, in the description of the embodiments of the present application, the meaning of "multiple" is more than two (including two), and similar expressions related to "multiple" are also understood in this way, for example, "multiple groups", "multiple times" and the like, unless otherwise explicitly specified.

[0043] In the description of the embodiments of the present application, the spatial-related terms used, such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or the drawings, and are only for the convenience of describing the specific embodiments of the present application or for the reader to understand, and do not indicate or imply that the indicated device or component must have a particular position, a particular orientation, or be constructed or operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0044] Unless otherwise explicitly specified or limited, in the description of the embodiments of the present application, the terms "mount", "connect", "connect", "fix", "set", and the like should be understood broadly. For example, the "connection" can be fixed connection, or detachable connection, or integrated setting; it can be mechanical connection, or electrical connection, or communication connection; it can be direct connection, or indirect connection through intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art to which the present application belongs, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0045] Please refer to Figures 1 to 5The embodiment provides a telescopic drain pipe device, which comprises a first positive pipeline 1, a second positive pipeline 2 and a first supporting ring 5, the inner diameter of the first positive pipeline 1 is larger than the outer diameter of the second positive pipeline 2, the second positive pipeline 2 is slidably connected in the first positive pipeline 1 and extends from the rear end of the first positive pipeline 1, the first supporting ring 5 is arranged in the first positive pipeline 1 and located at the side of the second positive pipeline 2 close to the front end 11 of the first positive pipeline 1, and the first supporting ring 5 is provided with a supporting part 52 for supporting the second positive pipeline 2.

[0046] The first positive pipeline 1 serves as an outer pipe and has a large inner diameter for accommodating the second positive pipeline 2 to slide in the first positive pipeline 1. The outer diameter of the second positive pipeline 2 is smaller than the inner diameter of the first positive pipeline 1, so that the second positive pipeline 2 can smoothly extend and contract in the first positive pipeline 1. The second positive pipeline 2 can extend from the rear end of the first positive pipeline 1. The second positive pipeline 2 can be driven to extend and contract in the first positive pipeline 1 by a first linear motion mechanism (such as an oil cylinder, an air cylinder or an electric cylinder). When the total length of the pipeline needs to be increased, the second positive pipeline 2 extends from the rear end of the first positive pipeline 1; conversely, the second positive pipeline 2 is retracted into the first positive pipeline 1.

[0047] Due to the self-weight or load of the second positive pipeline 2, the front end of the second positive pipeline 2 is inclined to collide with the first positive pipeline 1. During the driving of the drain vehicle, the collision between the first positive pipeline 1 and the second positive pipeline 2 is frequent, which causes serious abrasion of the pipe wall. By arranging the first supporting ring 5 close to the front end 11 of the first positive pipeline 1, the second positive pipeline 2 is retracted into the first positive pipeline 1 and in contact with the supporting part 52 of the first supporting ring 5, the supporting part 52 can effectively support the second positive pipeline 2, prevent the second positive pipeline 2 from tilting and shaking, and help to keep the second positive pipeline 2 horizontal, so as to reduce the collision between the first positive pipeline 1 and the second positive pipeline 2, reduce the abrasion rate of the pipe wall and prolong the service life of the device. In addition, after the second positive pipeline 2 is kept horizontal, the problem of inclination of the linear motion mechanism such as the oil cylinder, the air cylinder or the electric cylinder for driving the pipeline to extend and contract is avoided, and the durability of the linear motion mechanism is ensured.

[0048] Please refer to Figure 1 , Figure 2 and Figure 3In the embodiment, the telescopic drain pipe device further comprises the first reverse pipe 4 and the second supporting ring 6, the inner diameter of the first forward pipe 1 is greater than the outer diameter of the first reverse pipe 4, the second supporting ring 6 is arranged in the front port 11 of the first forward pipe 1 in a sliding connection with the first reverse pipe 4, the first reverse pipe 4 extends into the front port 11 of the first forward pipe 1, and the first supporting ring 5 is arranged on the outer wall of the first reverse pipe 4 in a sliding connection. The outer diameter of the first reverse pipe 4 is smaller than the inner diameter of the first forward pipe 1, and the first reverse pipe 4 can slide in the first forward pipe 1. The first supporting ring 5 can slide on the outer wall of the first reverse pipe 4 without affecting the telescopic sliding of the first reverse pipe 4. The second supporting ring 6 supports the first reverse pipe 4 to prevent the first reverse pipe 4 from tilting and shaking, and also plays a role in keeping the first supporting ring 5 in a predetermined position. The outer ring of the second supporting ring 6 can be welded on the inner wall of the first forward pipe 1, and the inner ring 62 is smooth and resistant to friction, so that the first reverse pipe 4 can slide smoothly.

[0049] In some embodiments, instead of the first supporting ring 5 being arranged on the first reverse pipe 4 in a sliding connection, the first supporting ring 5 is fixedly connected to the first forward pipe 1, and the fixed connection can be achieved by welding, riveting or clamping. For example, an end cover for fixing the first supporting ring 5 is arranged at the position of the front port 11 of the first forward pipe 1, and the first supporting ring 5 is fixed between the end cover and the first forward pipe 1 by a bracket, so that the first supporting ring 5 can be kept in a predetermined position without deviation.

[0050] Referring to Figure 2 and Figure 3 In the embodiment, the inner ring 62 of the second supporting ring 6, which is in a sliding connection with the first reverse pipe 4, is provided with a second sliding part 61. The second supporting ring 6 has a ring structure, and the inner ring 62 has a ring-shaped space inside. The second sliding part 61 can reduce the frictional resistance between the first reverse pipe 4 and the second supporting ring 6, so that the sliding process is smoother and more stable, and the noise and wear caused by friction are reduced. In some embodiments, the inner ring 62 of the second supporting ring 6 can be directly in a sliding connection with the first reverse pipe 4.

[0051] Referring to Figure 3 In the embodiment, the second sliding part 61 is a polytetrafluoroethylene block, and the polytetrafluoroethylene block is embedded in a mounting groove of the inner ring 62 of the second supporting ring 6. The mounting groove is recessed downward from the inner ring 62 of the second supporting ring 6, and the polytetrafluoroethylene block is assembled in the mounting groove. The polytetrafluoroethylene block is arc-shaped or annular to adapt to the shape of the first reverse pipe 4, and specifically, the arc-shaped or annular polytetrafluoroethylene block can closely fit the outer wall of the first reverse pipe 4 to form a smooth sliding surface.

[0052] In some embodiments, the material of the second sliding part 61 can be nylon block or plastic block. In general, polytetrafluoroethylene, nylon and plastic can be used as the material of the second sliding part 61, which has excellent hardness characteristics and extremely smooth surface, ensuring the high efficiency and long-term durability of the sliding part.

[0053] In addition, the surface of the second sliding part 61 can be specially treated, such as polishing, coating lubricant, etc., to further reduce the friction resistance.

[0054] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 In the embodiment, the first support ring 5 is provided with a first sliding part 51 which is in sliding connection with the inner wall of the first forward pipeline 1, and the first sliding part 51 is located at the side of the support part 52 close to the front end port 11 of the first forward pipeline 1. The first support ring 5 can be made of the low-friction and high-wear-resistant materials such as polytetrafluoroethylene, nylon and plastic mentioned above. The first sliding part 51 has a certain length and extends along the inner wall of the first forward pipeline 1, ensuring the continuous contact and close fit between the first support ring 5 and the inner wall of the first forward pipeline 1, avoiding the first support ring 5 from turning over when sliding in the first forward pipeline 1.

[0055] Please refer to Figure 3 In the embodiment, the first sliding part 51 is a straight cylindrical structure, and its length (as shown by the mark m in the figure) is 20-30 mm. The side of the straight cylindrical structure can ensure uniform contact and smooth sliding with the inner wall of the first forward pipeline 1. Figure 3

[0056] Please refer to Figure 4 and Figure 5 Preferably, the first sliding part 51 of the straight cylindrical structure can be uniformly provided with notches 55, which can reduce the weight without affecting the strength of the first sliding part 51.

[0057] Please refer to Figure 2 and Figure 3 In the embodiment, the inner diameter of the second forward pipeline 2 is greater than the outer diameter of the first reverse pipeline 4, and the first reverse pipeline 4 can extend into the second forward pipeline 2. When stored, the first reverse pipeline 4 is received in the second forward pipeline 2, and the second forward pipeline 2 is received in the first forward pipeline 1, so that the length of the telescopic drain pipe device is the shortest.

[0058] Please refer to Figure 2 , Figure 3 and Figure 4 In the embodiment, the first support ring 5 is provided with a recess 54 which accommodates the second support ring 6. Figure 3 ​It is shown that the second support ring 6 is right-angled on the side close to the first support ring 5, and the groove 54 on the first support ring 5 is a right-angled groove 54.

[0059] In the embodiment, the telescopic drain pipe device further comprises a first linear motion mechanism and a second linear motion mechanism. The two ends of the first linear motion mechanism are arranged on the first forward pipe 1 and the second forward pipe 2, and are used to push the first forward pipe 1 and the second forward pipe 2 to slide along a straight line. The two ends of the second linear motion mechanism are arranged on the first forward pipe 1 and the first reverse pipe 4, and are used to push the first forward pipe 1 and the first reverse pipe 4 to slide along a straight line.

[0060] The first linear motion mechanism and the second linear motion mechanism can be oil cylinders, air cylinders, electric cylinders, or other mechanisms that can make components move in a straight line. Taking the first linear motion mechanism as an example, the cylinder body of the oil cylinder can be fixed on the outer wall of the first forward pipe 1 through a lifting lug, and the piston rod of the oil cylinder can be fixed on the outer wall of the second forward pipe 2 through a lifting lug. The cylinder body and the piston rod are arranged along the axial direction of the first forward pipe 1. Taking the second linear motion mechanism as an example, the cylinder body of the oil cylinder can be fixed on the outer wall of the first forward pipe 1 through a lifting lug, and the piston rod of the oil cylinder can be fixed on the outer wall of the first reverse pipe 4 through a lifting lug. The cylinder body and the piston rod are arranged along the axial direction of the first forward pipe 1.

[0061] Please refer to Figures 2 to 4 In the embodiment, the support part 52 is a first conical slope, the width (diameter) of the front end of the first conical slope is greater than the width (diameter) of the rear end of the first conical slope, and the front end of the second forward pipe 2 is provided with a second conical slope 21 used to contact the support part 52. The inclination angle of the second conical slope 21 is the same as that of the first conical slope.

[0062] When the second forward pipe 2 moves towards the front end port 11 of the first forward pipe 1, the second conical slope 21 at the front end of the second forward pipe 2 will gradually contact the first conical slope. Since the inclination angles of the two conical slopes are the same, the contact between them will be very smooth and stable, until the second conical slope 21 is attached to the first conical slope, and the first conical slope supports the second conical slope 21.

[0063] Figure 2 It is shown that the arrow a indicates the front end direction, and the first conical slope is inclined from the front upper direction to the rear lower direction, and the second conical slope 21 is also inclined from the front upper direction to the rear lower direction. The second conical slope 21 has another advantage, which can guide the first reverse pipe 4 to enter the second forward pipe 2, and avoid the interference between the first reverse pipe 4 and the end wall of the first forward pipe 1.

[0064] Please refer to Figure 2 andFigure 3 In the embodiment, a step 53 is arranged between the first sliding part 51 and the supporting part 52. The first sliding part 51 is in a straight cylinder structure, and the supporting part 52 is in a first tapered surface. If the first tapered surface extends to the first sliding part 51, the second tapered surface 21 can be stuck in the gap between the straight cylinder structure and the inner wall of the first forward pipeline 1. The step 53 arranged between the first tapered surface and the straight cylinder structure can separate the first tapered surface.

[0065] Please refer to Figures 1 to 3 In the embodiment, the telescopic drainpipe device further comprises a third forward pipeline 3, and the supporting part 52 is further used for supporting the third forward pipeline 3. The inner diameter of the second forward pipeline 2 is greater than the outer diameter of the third forward pipeline 3, and the third forward pipeline 3 is slidably connected in the second forward pipeline 2 and extends from the rear end of the second forward pipeline 2. The front end of the third forward pipeline 3 is provided with a third tapered surface 31 used for contacting the supporting part 52, and the inclination angle of the third tapered surface 31 is the same as that of the first tapered surface.

[0066] Figure 2 As shown, the arrow a indicates the front end direction, the first tapered surface and the second tapered surface 21 are inclined from the front upper direction to the rear lower direction, and the third tapered surface 31 is also inclined from the front upper direction to the rear lower direction. Similar to the first tapered surface and the second tapered surface 21 described above, when the third forward pipeline 3 moves towards the front end 11 of the first forward pipeline 1, the third tapered surface 31 at the front end of the third forward pipeline 3 will gradually contact the first tapered surface. Until the third tapered surface 31 is attached to the first tapered surface, the first tapered surface supports the third tapered surface 31.

[0067] In the embodiment, the first reverse pipeline 4 can extend from the front end of the third forward pipeline 3, so that the third tapered surface 31 can guide the first reverse pipeline 4 to enter the third forward pipeline 3. That is, when the pipeline is retracted, the first reverse pipeline 4 can finally enter the third forward pipeline 3.

[0068] Please refer to Figure 1 In the embodiment, the telescopic drainpipe device further comprises a third linear motion mechanism 7, and the two ends of the third linear motion mechanism 7 are arranged on the first forward pipeline 1 and the third forward pipeline 3, and are used for pushing the first forward pipeline 1 and the third forward pipeline 3 to slide in a straight line. The third linear motion mechanism 7 can be an oil cylinder, an air cylinder or an electric cylinder, which can make the components move in an accurate or approximate straight line. Taking the oil cylinder as an example, the cylinder body 71 of the oil cylinder can be fixed on the outer wall of the first forward pipeline 1 through a lifting lug, and the piston rod 72 of the oil cylinder can be fixed on the outer wall of the third forward pipeline 3 through a lifting lug, and the cylinder body 71 and the piston rod 72 are arranged along the axial direction of the first forward pipeline 1.

[0069] Please refer to Figures 1 to 5 The embodiment also provides a drainage device, comprising a telescopic drainage pipe device, a turnover frame 8 and a water pump 9, the telescopic drainage pipe device is the telescopic drainage pipe device described in any one of the above embodiments, the first positive pipeline 1 of the telescopic drainage pipe device is arranged on the turnover frame 8, and the water inlet of the telescopic drainage pipe device is provided with the water pump 9.

[0070] The turnover frame 8 can be hinged on a chassis of a drainage vehicle, the turnover frame 8 can be turned up and down relative to the chassis, and then the telescopic drainage pipe device is turned up and down, so that the angle of water taking is adjusted.

[0071] The water inlet of the telescopic drainage pipe device is at the rear end of the telescopic drainage pipe device, when the telescopic drainage pipe device comprises the first positive pipeline 1 and the second positive pipeline 2 and the third positive pipeline 3 is not arranged, the rear end of the second positive pipeline 2 is the water inlet, and the water pump 9 is arranged on the rear end of the second positive pipeline 2. When the telescopic drainage pipe device comprises the first positive pipeline 1, the second positive pipeline 2 and the third positive pipeline 3, the rear end of the third positive pipeline 3 is the water inlet, and the water pump 9 is arranged on the rear end of the third positive pipeline 3.

[0072] It should be noted that although the above embodiments have been described in the present text, the patent protection scope of the utility model is not limited thereby. Therefore, based on the innovative concept of the utility model, the changes and modifications of the embodiments described in the present text, or the equivalent structure or equivalent process transformation made by using the contents of the utility model specification and drawings, directly or indirectly apply the above technical solutions to other related technical fields, are all included in the protection scope of the utility model patent.

Claims

1. A telescopic drain pipe device, characterized in that: It includes a first forward pipe, a second forward pipe and a first support ring. The inner diameter of the first forward pipe is larger than the outer diameter of the second forward pipe. The second forward pipe is slidably connected to the first forward pipe. The second forward pipe extends from the rear port of the first forward pipe. The first support ring is arranged in the first forward pipe and is located on the side of the second forward pipe close to the front port of the first forward pipe. The first support ring is provided with a support portion for supporting the second forward pipe.

2. The telescopic drain pipe device according to claim 1, characterized in that: It also includes a first reverse pipe and a second support ring. The inner diameter of the first forward pipe is larger than the outer diameter of the first reverse pipe. The second support ring slidably connected to the first reverse pipe is provided inside the front port of the first forward pipe. The first reverse pipe extends from the front port of the first forward pipe, and the first support ring is slidably connected to the outside of the first reverse pipe.

3. The telescopic drain pipe device according to claim 2, characterized in that: A second sliding portion is provided on the inner ring of the second support ring which is slidably connected to the first reverse pipe.

4. The telescopic drain pipe device according to claim 3, characterized in that: The second sliding part is a polytetrafluoroethylene block, and the polytetrafluoroethylene block is embedded in the mounting groove of the inner ring of the second support ring.

5. The telescopic drain pipe device according to claim 1 or 2, characterized in that: The first support ring is provided with a first sliding portion slidably connected to the inner wall of the first forward pipe. The first sliding portion is located on a side of the support portion close to the front end of the first forward pipe.

6. The telescopic drain pipe device according to claim 5, characterized in that: The first sliding portion is a straight cylindrical structure with a length of 20-30 mm.

7. The telescopic drain pipe device according to claim 5, characterized in that: A step is provided between the first sliding portion and the supporting portion.

8. The telescopic drain pipe device according to claim 2, characterized in that: The inner diameter of the second forward pipe is greater than the outer diameter of the first reverse pipe. The first reverse pipe can extend into the second forward pipe. The first support ring is provided with a groove for accommodating the second support ring.

9. The telescopic drain pipe device according to claim 2, characterized in that: It also includes a first linear motion mechanism and a second linear motion mechanism. The two ends of the first linear motion mechanism are arranged on the first forward pipe and the second forward pipe, and are used to push the first forward pipe and the second forward pipe to slide telescopically along a straight line. The two ends of the second linear motion mechanism are arranged on the first forward pipe and the first reverse pipe, and are used to push the first forward pipe and the first reverse pipe to slide telescopically along a straight line.

10. The telescopic drain pipe device according to claim 2, characterized in that: The first support ring is fixedly connected to the first forward pipe.

11. The telescopic drain pipe device according to any one of claims 1 to 4 and 6 to 10, characterized in that: The supporting portion is a first conical slope, the width of the front end of the first conical slope is greater than the width of the rear end of the first conical slope, and the front end of the second forward pipe is provided with a second conical slope for contacting the supporting portion, and the inclination angle of the second conical slope is the same as the inclination angle of the first conical slope.

12. The telescopic drain pipe device according to claim 11, characterized in that: It also includes a third forward pipe, and the support part is also used to support the third forward pipe. The inner diameter of the second forward pipe is larger than the outer diameter of the third forward pipe. The third forward pipe is slidably connected inside the second forward pipe. The third forward pipe extends from the rear port of the second forward pipe. The front end of the third forward pipe is provided with a third conical slope for contacting the support part, and the inclination angle of the third conical slope is the same as the inclination angle of the first conical slope.

13. The telescopic drain pipe device according to claim 5, characterized in that: The supporting portion is a first conical slope, the width of the front end of the first conical slope is greater than the width of the rear end of the first conical slope, and the front end of the second forward pipe is provided with a second conical slope for contacting the supporting portion, and the inclination angle of the second conical slope is the same as the inclination angle of the first conical slope.

14. The telescopic drain pipe device according to claim 13, characterized in that: It also includes a third forward pipe, and the support part is also used to support the third forward pipe. The inner diameter of the second forward pipe is larger than the outer diameter of the third forward pipe. The third forward pipe is slidably connected inside the second forward pipe. The third forward pipe extends from the rear port of the second forward pipe. The front end of the third forward pipe is provided with a third conical slope for contacting the support part, and the inclination angle of the third conical slope is the same as the inclination angle of the first conical slope.

15. A drainage device, comprising a telescopic drain pipe device, a turning frame and a water pump, wherein the telescopic drain pipe device is the telescopic drain pipe device according to any one of claims 1 to 14, the first forward pipe of the telescopic drain pipe device is arranged on the turning frame, and the water pump is provided at the water inlet of the telescopic drain pipe device.

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