Flange anti-falling structure for water pump

Abstract

The flange comprises a flange plate, the flange plate is installed at a water outlet of the water pump, an annular anti-disengaging ring is arranged on the inner wall of the circumference of the flange plate, a water conveying pipe comprises an outer layer, a middle layer and an inner layer which are sequentially arranged from outside to inside, and the lower end of the water conveying pipe penetrates into the flange plate from top to bottom. The lower end of the middle layer downwards extends out of the anti-disengaging ring, and the section, extending out of the anti-disengaging ring, of the lower end of the middle layer is turned outwards and abuts against the lower surface of the anti-disengaging ring. The utility model aims to solve or at least alleviate the problem that a flange is separated from a water delivery pipe in the use process of a water pump, and provides a flange anti-separation structure for the water pump.

Description

TECHNICAL FIELD

[0001] The utility model belongs to flange technical field especially relates to a flange anti -drop structure for water pump. BACKGROUND

[0002] Water pump is also called water pump, and is used for lifting water from low place to high place by motor, diesel engine or water power, that is, the machine for conveying liquid or increasing pressure of liquid. Flange is a component part of water pump, and is mainly used for connecting with pipeline to be conveyed to realize conveying function of water pump.

[0003] At present, most of water conveying pipes melt the plastic layer of flange and the plastic layer of water conveying pipe into one, or clamp the water conveying pipe by hoop, and then connect the hoop to the water conveying pipe by bolt. However, the connecting force of melting is limited, and the melting effect is not easy to control, and the water pump is usually heavy, and the melting part may be separated during use. The water pump and the water conveying pipe may be separated due to the downward movement of the hoop. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the defects in the prior art, solving or at least alleviating the problem that the flange may be separated from the water conveying pipe during use of the water pump, and providing a flange anti-drop structure for water pump.

[0005] The utility model is realized by the following technical schemes:

[0006] A flange anti-drop structure for water pump, the flange is used for connecting the water pump and the water conveying pipe, the flange comprises a flange plate, the flange plate is installed at the water outlet of the water pump, the circumferential inner wall of the flange plate is provided with an annular anti-drop ring, the water conveying pipe comprises an outer layer, a middle layer and an inner layer arranged in sequence from outside to inside, the outer layer and the inner layer are made of plastic material, and the middle layer is made of metal material.

[0007] The circumferential outer wall of the anti-drop ring is fixedly connected with the circumferential inner wall of the flange plate, the outer diameter value of the middle layer is not less than the inner diameter value of the anti-drop ring, and the lower end of the middle layer of the water conveying pipe protrudes out of the outer layer.

[0008] The lower end of the water conveying pipe penetrates into the flange plate from top to bottom, the lower end surface of the outer layer abuts to the upper surface of the anti-drop ring, the lower end of the middle layer protrudes out of the anti-drop ring, and the section of the lower end of the middle layer protruding out of the anti-drop ring is turned outward and abuts to the lower surface of the anti-drop ring.

[0009] In order to further realize the utility model, the following technical schemes can be preferred:

[0010] Preferably, the flange further comprises a sleeve, the sleeve is coaxially fixedly arranged on the upper side of the flange plate, the inner diameter value of the sleeve is equal to the outer diameter value of the outer layer, the sleeve is made of plastic material and is melted into one with the outer layer.

[0011] Preferably, the upper surface of the anti-drop ring is flush with the upper surface of the flange plate, the lower surface of the anti-drop ring is above the lower surface of the flange plate, and the distance between the lower surface of the anti-drop ring and the lower surface of the flange plate is greater than the thickness of the middle layer.

[0012] Preferably, the lower end surface of the inner layer is located at a height position not lower than that of the lower end surface of the outer layer.

[0013] By the above technical solution, the utility model has the beneficial effects that:

[0014] The utility model discloses a flange and water delivery pipe are provided with anti-drop ring, and the relative position between the flange and the water delivery pipe is limited, and the water delivery pipe and the flange are prevented from separating. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structure sectional view of the utility model;

[0016] Figure 2 It is the structure schematic diagram of the utility model;

[0017] Figure 3 It is the structure sectional view of the flange of the utility model;

[0018] Figure 4 It is the structure sectional view of the water delivery pipe of the utility model;

[0019] Wherein: 1-flange;2-water delivery pipe;101-flange plate;102-anti-drop ring;103-sleeve;201-outer layer;202-middle layer;203-inner layer. DETAILED DESCRIPTION

[0020] In the description of the utility model, it also needs to be explained that, unless there is explicit definition and limitation, the terms "arrange", "install", "connect", "connect" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected;Can be mechanical connection, can be electrical connection;Can be directly connected, or indirectly connected through an intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely in the description of the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary skilled in the art without creative labor are within the scope of the utility model.

[0022] Example 1:

[0023] like Figures 1-4 As shown, a flange anti-detachment structure for a water pump is disclosed. The flange 1 is used to connect the water pump and the water supply pipe 2. The flange 1 includes a flange plate 101, which is installed at the outlet of the water pump. An annular anti-detachment ring 102 is provided on the inner circumference of the flange plate 101. The water supply pipe 2 includes an outer layer 201, a middle layer 202, and an inner layer 203 arranged sequentially from the outside to the inside. The outer layer 201 and the inner layer 203 are both made of plastic, and the middle layer 202 is made of metal.

[0024] The outer circumference of the anti-detachment ring 102 is fixedly connected to the inner circumference of the flange 101. The outer diameter of the middle layer 202 is not less than the inner diameter of the anti-detachment ring 102. The lower end of the middle layer 202 of the water pipe 2 extends downward out of the outer layer 201.

[0025] The lower end of the water pipe 2 is inserted into the flange 101 from top to bottom. The lower end of the outer layer 201 abuts against the upper surface of the anti-detachment ring 102. The lower end of the middle layer 202 extends downward out of the anti-detachment ring 102. The section of the lower end of the middle layer 202 that extends out of the anti-detachment ring 102 flips outward and abuts against the lower surface of the anti-detachment ring 102.

[0026] When in use, the outer layer 201 of the water pipe 2 abuts against the anti-detachment ring 102 from top to bottom, and the middle layer 202 of the water pipe 2 passes through the anti-detachment ring 102 and abuts against the anti-detachment ring 102 from bottom to top, limiting the relative position between the flange 1 and the water pipe 2 and preventing the water pipe 2 from detaching from the flange 1.

[0027] To further ensure the reliability of the connection between the water pipe 2 and the flange 1, the flange 1 also includes a sleeve 103. The sleeve 103 is coaxially fixed on the upper side of the flange 101. The inner diameter of the sleeve 103 is equal to the outer diameter of the outer layer 201. The sleeve 103 is made of plastic and is heat-fused to the outer layer 201.

[0028] To optimize the product structure, in this embodiment, the upper surface of the anti-detachment ring 102 is flush with the upper surface of the flange 101, and the lower surface of the anti-detachment ring 102 is located above the lower surface of the flange 101. The distance between the lower surface of the anti-detachment ring 102 and the lower surface of the flange 101 is greater than the thickness of the middle layer 202. After the middle layer 202 is flipped, the distance between the lower part of the middle layer 202 that abuts against the anti-detachment ring 102 and the water pump housing is small, which is insufficient to cause the middle layer 202 to flip inward under force, thus preventing the lower end of the middle layer 202 from flipping inward and detaching from the flange 1.

[0029] To facilitate the flipping of the middle layer 202 during installation, the lower end face of the inner layer 203 is at a height no lower than the lower end face of the outer layer 201.

[0030] It should be explained finally: above only is the preferred embodiment of the utility model and is not used for limiting the utility model, although the utility model has been explained in detail with reference to foregoing embodiment, for the skilled person in the art, it still can modify the technical scheme recorded in foregoing each embodiment or make equivalent replacement to part technical features, any modification, equivalent replacement, improvement etc. made within the spirit and principle of the utility model should be contained in the protection scope of the utility model.

Claims

1. A flange anti-disengagement structure for a water pump, a flange (1) for connection of a water pump and a water delivery pipe (2), characterized in that, The flange (1) comprises a flange plate (101) installed at the water outlet of a water pump, and an annular anti-off ring (102) is arranged on the inner circumferential wall of the flange plate (101); the water delivery pipe (2) comprises, from outside to inside, an outer layer (201), a middle layer (202) and an inner layer (203), wherein the outer layer (201) and the inner layer (203) are made of plastic material, and the middle layer (202) is made of metal material; The outer circumferential wall of the anti-off ring (102) is fixedly connected with the inner circumferential wall of the flange plate (101), the outer diameter of the middle layer (202) is not less than the inner diameter of the anti-off ring (102), and the lower end of the middle layer (202) of the water delivery pipe (2) extends out of the outer layer (201); The lower end of the water delivery pipe (2) penetrates into the flange plate (101) from top to bottom, the lower end surface of the outer layer (201) abuts against the upper surface of the anti-off ring (102), the lower end of the middle layer (202) extends out of the anti-off ring (102), and the section of the lower end of the middle layer (202) extending out of the anti-off ring (102) is turned outward and abuts against the lower surface of the anti-off ring (102).

2. The flange escape prevention structure for a water pump according to claim 1, characterized by The flange (1) further comprises a sleeve (103) coaxially fixedly arranged on the upper side of the flange plate (101), the inner diameter of the sleeve (103) is equal to the outer diameter of the outer layer (201), the sleeve (103) is made of plastic material and is integrally formed with the outer layer (201) by hot melting.

3. The flange escape prevention structure for a water pump according to claim 1, characterized by The upper surface of the anti-off ring (102) is flush with the upper surface of the flange plate (101), the lower surface of the anti-off ring (102) is located above the lower surface of the flange plate (101), and the distance between the lower surface of the anti-off ring (102) and the lower surface of the flange plate (101) is greater than the thickness of the middle layer (202).

4. The flange escape prevention structure for a water pump according to claim 1, characterized by The lower end surface of the inner layer (203) is located at a height position not lower than that of the lower end surface of the outer layer (201).

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