A rubber ring adapted to sealingly connect a bellows and a sleeve

Abstract

The utility model relates to the field of rubber ring, specifically to a rubber ring suitable for the sealing connection of corrugated pipe and sleeve. It includes rubber ring body, the rubber ring body is annular structure, the inner peripheral surface is arc surface, both sides surface of axial direction all have the recess groove recessed along the axial direction, the recess groove is the annular groove with the rubber ring body same axis, the inner peripheral surface and the outer peripheral surface of rubber ring body are all formed circumferential surface after being extruded. The utility model is in the application, when the water flow passes to the recess groove, will indirectly force to the inner peripheral surface and the outer peripheral surface through the recess groove, and the rubber ring is pressed on the outer peripheral surface of corrugated pipe and the inner peripheral surface of sleeve, guarantees the contact area, promotes the sealing effect.

Description

Technical Field

[0001] This utility model relates to the field of rubber rings, and in particular to a rubber ring adapted for sealing connections between bellows and sleeves. Background Technology

[0002] Corrugated pipes are a type of plastic drainage pipe, mainly used for drainage of sewage and rainwater. They are specifically used for slope protection and soil and water conservation in hillside development, water supply and drainage in water purification plants, municipal engineering projects, sewage treatment plants, landfills, and drainage in tunnels and underground passages.

[0003] The corrugated pipe itself has a limited length. When it is necessary to connect two corrugated pipes to form a pipeline of the required length, two corrugated pipes can be connected from both sides through a sleeve. The end of the corrugated pipe is inserted into the inside of the sleeve, and a rubber ring is used to seal and waterproof between the corrugated pipe and the sleeve.

[0004] However, the existing rubber ring cross-sectional profile is generally rectangular. When water flows from between the two bellows to the rubber ring, if the water pressure is high, the water will squeeze the rubber ring outward from one side of the axial direction, causing that side of the rubber ring to be concave inward. This reduces the contact area between the outer circumference of the rubber ring and the sleeve, thus reducing the sealing effect. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a rubber ring that is suitable for sealing connections between corrugated pipes and sleeves. When water flows to the groove, it will indirectly exert force on the inner and outer circumferential surfaces through the groove. The rubber ring is pressed tightly on the outer circumferential surface of the corrugated pipe and the inner circumferential surface of the sleeve, ensuring the contact area and improving the sealing effect.

[0006] The technical solution of this utility model is a rubber ring adapted for sealing connection of bellows and sleeves, including a rubber ring body. The rubber ring body has an annular structure, an arc-shaped inner circumferential surface, and grooves that are concave inward along the axial direction on both sides of the axial side surface. The grooves are annular grooves coaxial with the rubber ring body. The inner and outer circumferential surfaces of the rubber ring body are both formed into circumferential surfaces after being squeezed.

[0007] Preferably, the outer circumferential surface of the rubber ring body is a conical inclined surface, and the diameter of the conical inclined surface gradually increases from one end to the other.

[0008] Preferably, a pressure guide groove is provided in one of the recesses, and the pressure guide groove is located on the inner side of the end with the smaller diameter of the conical inclined surface.

[0009] Preferably, the outer peripheral surface of the rubber ring body is an arc-shaped surface.

[0010] Preferably, the outer peripheral surface of the rubber ring body has multiple protruding bosses arranged side by side along the axial direction. The bosses are annular structures and coaxial with the rubber ring body.

[0011] Preferably, multiple toothed secondary grooves are arranged radially side by side on both axial sides of the rubber ring body, and the secondary grooves are located between the inner circumferential surface of the rubber ring body and the groove.

[0012] Compared with the prior art, the present invention has the following beneficial technical effects: When the present invention is applied to the connection of corrugated pipe and sleeve, water flows from between the two corrugated pipes to the groove of the rubber ring body, and will indirectly exert force on the inner and outer circumferential surfaces through the groove, further pressing the rubber ring body on the outer circumferential surface of the corrugated pipe and the inner circumferential surface of the sleeve, ensuring the contact area and improving the sealing effect. Attached Figure Description

[0013] Figure 1 This is a structural cross-sectional view of Embodiment 1 of the present utility model;

[0014] Figure 2 This is a cross-sectional view of the structure of Embodiment 1 of this utility model when applied to the sealing connection of a bellows and a sleeve;

[0015] Figure 3 This is a structural cross-sectional view of Embodiment 2 of the present invention;

[0016] Figure 4 This is a structural cross-sectional view of Embodiment 3 of the present invention;

[0017] Figure 5 This is a structural cross-sectional view of Embodiment 4 of this utility model.

[0018] Reference numerals in the attached drawings: 1. Rubber ring body; 101. Groove; 1011. Pressure guide groove; 102. Secondary groove; 103. Boss part; 2. Bellows; 3. Sleeve. Detailed Implementation

[0019] Example 1

[0020] like Figure 1 and Figure 2 As shown in the figure, the rubber ring proposed in this embodiment is adapted to the sealing connection of the bellows and the sleeve. It includes a rubber ring body 1. The rubber ring body 1 has an annular structure with an arc-shaped inner circumferential surface and grooves 101 that are concave inward along the axial direction on both sides of the axial side. The grooves 101 are annular grooves coaxial with the rubber ring body 1. After the inner and outer circumferential surfaces of the rubber ring body 1 are compressed, they both form a circumferential surface, that is, a straight annular surface, similar to a circumference, which can ensure that there is sufficient contact area between the rubber ring body 1 and the bellows 2 and the sleeve 3.

[0021] The outer circumference of the rubber ring body 1 is a tapered slope, with the diameter of the tapered slope gradually increasing from one end to the other. When installing the rubber ring body 1, the tapered slope faces the outer end of the sleeve 3. As the rubber ring body 1 is inserted into the sleeve 3, the tapered slope is compressed by the inner wall of the sleeve 3, and the outer circumference of the rubber ring body 1 is gradually compressed from the outer end to the inner end, with a greater compression force at the outer end. When water flows from between the two bellows 2 to the groove 101, it squeezes the inner end of the rubber ring body 1 outward, thus ensuring that both the inner and outer ends of the rubber ring body 1 are firmly compressed axially, resulting in good sealing performance.

[0022] In this embodiment, when applied to the connection of the bellows 2 and the sleeve 3, water flows from between the two bellows 2 to the groove 101 of the rubber ring body 1. Through the groove 101, water indirectly applies force to the inner and outer circumferential surfaces, further pressing the rubber ring body 1 tightly onto the outer circumferential surface of the bellows 2 and the inner circumferential surface of the sleeve 3, ensuring the contact area and improving the sealing effect.

[0023] Example 2

[0024] like Figure 3 As shown in the figure, this embodiment proposes a rubber ring adapted for sealing connections between bellows and sleeves. Compared to Embodiment 1, in this embodiment, a pressure guiding groove 1011 is provided at a groove 101. The pressure guiding groove 1011 is located inside the smaller diameter end of the conical inclined surface. When water flows from between the two bellows 2 to the groove 101, it will squeeze the rubber ring body 1 through the pressure guiding groove 1011. The pressure guiding groove 1011 is inclined towards the outer circumference of the rubber ring body 1, so that the water can press the smaller diameter end of the conical inclined surface tightly against the inner wall of the sleeve 3 through the pressure guiding groove 1011, ensuring a sealing effect.

[0025] Example 3

[0026] like Figure 4 As shown, this embodiment proposes a rubber ring adapted for sealing connections between bellows and sleeves. Compared to Embodiment 1, in this embodiment, the outer circumferential surface of the rubber ring body 1 is an arc-shaped surface, which, together with the arc-shaped surface of the inner circumferential surface of the rubber ring body 1, acts on the inner wall of the sleeve 3 and the trough of the bellows 2, respectively, and is pressed together at both locations. After being pressed together, a straight annular surface is formed, that is, the contact surface is similar to the circumferential surface of a cylinder, with a large contact area and good sealing effect.

[0027] Example 4

[0028] like Figure 5As shown in this embodiment, a rubber ring adapted for sealing connections between bellows and sleeves is provided. Compared to Embodiment 1, in this embodiment, multiple protruding bosses 103 are arranged axially side by side on the outer circumferential surface of the rubber ring body 1. The bosses 103 have an annular structure and are coaxial with the rubber ring body 1. When the bellows 2 is inserted into the inner side of the sleeve 3, the multiple bosses 103 elastically press against the inner wall of the sleeve 3, and the multiple bosses 103 can maintain sufficient contact with the sleeve 3, achieving a multi-layer sealing connection with good sealing effect.

[0029] Furthermore, multiple toothed secondary grooves 102 are arranged radially side by side on both axial surfaces of the rubber ring body 1. The secondary grooves 102 are located between the inner circumferential surface of the rubber ring body 1 and the groove 101. By adding the secondary grooves 102, when water flows to this location, the inner end of the rubber ring body 1 installed in the sleeve 3 can be squeezed outward and inward respectively, thereby ensuring the contact area and compression reliability between the rubber ring body 1 and the sleeve 3 and the bellows 2, thus ensuring the sealing effect.

[0030] In this embodiment, the rubber ring body 1 has secondary grooves 102 on both sides of the axial direction and multiple bosses 103 are evenly distributed. Therefore, the rubber ring body 1 does not need to distinguish between the forward and reverse directions during installation. Regardless of whether the two ends of the rubber ring body 1 face the inner or outer side of the sleeve, it can be used for sealing connection between the sleeve 3 and the bellows 2.

[0031] In an optional embodiment, the outer diameter of the boss portion 103 located on the outer peripheral surface of the rubber ring body 1 gradually increases from both sides of the rubber ring body 1 toward the middle.

[0032] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A rubber ring adapted for sealing connections between bellows and sleeves, characterized in that, It includes a rubber ring body (1), which is a ring structure with an arc-shaped inner circumferential surface and grooves (101) that are concave inward along the axial direction on both sides of the axial side. The grooves (101) are annular grooves coaxial with the rubber ring body (1). The inner and outer circumferential surfaces of the rubber ring body (1) are both formed into circular surfaces after being squeezed.

2. The rubber ring adapted for sealing connections between bellows and sleeves according to claim 1, characterized in that, The outer circumferential surface of the rubber ring body (1) is a conical inclined surface, and the diameter of the conical inclined surface gradually increases from one end to the other end.

3. The rubber ring adapted for sealing connections between bellows and sleeves according to claim 2, characterized in that, A pressure guide groove (1011) is provided at a groove (101), and the pressure guide groove (1011) is located on the inner side of the smaller diameter end of the conical inclined surface.

4. The rubber ring adapted for sealing connections between bellows and sleeves according to claim 1, characterized in that, The outer circumferential surface of the rubber ring body (1) is an arc surface.

5. The rubber ring adapted for sealing connections between bellows and sleeves according to claim 1, characterized in that, Multiple protruding bosses (103) are arranged side by side along the axial direction on the outer peripheral surface of the rubber ring body (1). The bosses (103) are annular structures and are coaxial with the rubber ring body (1).

6. The rubber ring adapted for sealing connections between bellows and sleeves according to claim 5, characterized in that, Multiple toothed sub-grooves (102) are arranged in a radial parallel arrangement on both sides of the axial surface of the rubber ring body (1). The sub-grooves (102) are located between the inner circumferential surface of the rubber ring body (1) and the groove (101).

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