A rubber joint for drinking water

Abstract

The present invention provides a rubber joint for drinking water, which relates to the field of pipeline connection devices. A rubber joint for drinking water includes a first connecting flange and a second connecting flange. A rubber joint body is fixedly connected between the first connecting flange and the second connecting flange. Sealing surfaces are fixedly arranged at both ends of the rubber joint body. A compensation and protection sleeve sleeved on the outer end of the rubber joint body is arranged between the first connecting flange and the second connecting flange. Connecting heads are fixedly arranged on the outer sides of the first connecting flange and the second connecting flange, and compensation and protection rods are arranged between the opposite connecting heads. In the present invention, the compensation and protection sleeve and the compensation and protection rod are provided, which can protect the rubber part of the joint and can perform elastic compensation, solving the problems that the rubber joint is easy to age and the sealing performance will be reduced after long-term use.

Description

Technical Field

[0001] The present invention relates to the field of pipeline connection devices, and particularly to a rubber joint for drinking water. Background Art

[0002] As the most economical and convenient water conveyance method, pipeline water conveyance has long been widely accepted and applied in society. Among them, pipeline connection technology, as an important link in pipeline water conveyance, has always been a key object of concern in this field, and the pipeline connection components involved in it have been continuously optimized and improved. For example, for pipe joints connecting rigid pipelines, in order to overcome the difficulties caused by axial displacement, angular displacement, lateral displacement, flange non-parallelism, etc. between rigid pipelines during construction, flexible rubber joints are often used to complete the connection work between rigid pipelines.

[0003] At present, most of the rubber joints for drinking water pipelines are designed with the rubber part directly exposed. This way will cause external factors to directly affect the rubber part, thus accelerating rubber aging and reducing service life. At the same time, after long-term use, the flange connection will be worn, resulting in reduced sealing performance and leakage. Therefore, those skilled in the art have provided a rubber joint for drinking water to solve the problems raised in the above background art. Summary of the Invention

[0004] (I) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the present invention provides a rubber joint for drinking water, which can protect the rubber part of the joint and can perform elastic compensation, solving the problems of easy aging of the rubber joint and easy reduction of sealing performance after long-term use.

[0006] (II) Technical Solutions

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions: A rubber joint for drinking water includes a first connecting flange and a second connecting flange. A rubber joint main body is fixedly connected between the first connecting flange and the second connecting flange. Sealing surfaces are fixedly provided at both ends of the rubber joint main body. A compensation and protection sleeve sleeved on the outer end of the rubber joint main body is arranged between the first connecting flange and the second connecting flange. Connecting heads are fixedly provided on the outer sides of the first connecting flange and the second connecting flange. Compensation and protection rods are arranged between the opposite connecting heads;

[0008] The compensation and protection sleeve includes an outer sleeve, an inner edge and a first spring. A plurality of first springs are evenly arranged around the center of the outer sleeve inside the outer sleeve and are fixedly connected to the bottom of the outer sleeve. The inner edge extends into the outer sleeve and is slidably connected thereto;

[0009] The compensation protection rod includes a first screw rod and a second screw rod. One end of the first screw rod is fixedly connected with a sleeve, and one end of the second screw rod is fixedly connected with a sliding rod. A second spring is fixedly connected inside the sleeve, and one end of the sliding rod extends into the sleeve and is slidably connected thereto;

[0010] The rubber joint body includes an inner layer, an intermediate layer and an outer layer. The intermediate layer is fixedly covered on the outer surface of the inner layer, and the outer layer is fixedly covered on the outer surface of the intermediate layer. A wire mesh is fixedly arranged inside the intermediate layer;

[0011] Through the above technical solutions, the compensation protection sleeve and the compensation protection rod can protect the internal rubber joint body, improve the impact resistance and anti-aging ability, and have a longer service life. Springs are arranged inside both the compensation protection sleeve and the compensation protection rod. When wear occurs at the connection, the spring elasticity can play a compensation role through spring back, with stronger reliability and better sealing effect.

[0012] Preferably, a sealing sleeve is fixedly sleeved at the connection between the sleeve and the sliding rod. One end of the second spring is fixedly connected with a baffle, and the baffle is slidably connected with the sleeve;

[0013] Through the above technical solutions, the sealing sleeve can enhance the sealing performance at the connection between the sliding rod and the sleeve, playing a role in preventing water ingress.

[0014] Preferably, the outer sleeve is fixedly connected with the first connection flange, and the inner edge is fixedly connected with the second connection flange;

[0015] Through the above technical solutions, the outer sleeve and the inner edge are of a split type, facilitating elastic telescopic compensation.

[0016] Preferably, both the first screw rod and the second screw rod are connected to the connector through two nuts;

[0017] Through the above technical solutions, the first screw rod and the second screw rod are firmly connected. The second screw rod can be disassembled after unscrewing the nut, facilitating installation.

[0018] Preferably, the inner layer is made of nylon cord fabric, the intermediate layer is made of raw rubber, and the outer layer is made of neoprene;

[0019] Through the above technical solutions, the rubber joint body with a multi-layer structure has good elasticity, high structural strength, is not easily torn, and has strong anti-aging and weather resistance.

[0020] Preferably, a mating head is fixedly arranged on one side of the sealing surface. Matching grooves are formed on the outer sides of both the first connection flange and the second connection flange, and the mating head is fixedly connected with the matching groove;

[0021] Through the above technical solution, the connection stability of the rubber joint body is enhanced by the connection of the mating head and the mating groove.

[0022] Preferably, two expansion spheres are arranged at the middle part of the rubber joint body;

[0023] Through the above technical solution, the spherical design can stretch and move, reducing pipeline damage compared with straight-wall rubber pipelines, and improving the flexibility and service life of the joint.

[0024] Preferably, a surrounding sleeve is fixedly arranged on one side of each of the first connecting flange and the second connecting flange. The surrounding sleeve is fixedly connected to the rubber joint body, and a plurality of mounting holes are formed on the outer sides of the first connecting flange and the second connecting flange;

[0025] Through the above technical solution, the surrounding sleeve can enhance the connection stability of the rubber joint body, and the mounting holes are convenient for matching with the flange of the pipeline.

[0026] (III) Beneficial effects

[0027] The present invention provides a drinking water rubber joint. It has the following beneficial effects:

[0028] 1. The present invention provides a drinking water rubber joint. When in use, a compensation protective sleeve and a compensation protection rod are provided, which can protect the internal rubber joint body. The structural strength is higher, and external factors are not easily affected on the internal rubber joint body, thereby improving the impact resistance and anti-aging ability, and having a longer service life.

[0029] 2. The present invention provides a drinking water rubber joint. Springs are arranged inside both the compensation protective sleeve and the compensation protection rod. After installation, the compensation protection rod and the compensation protective sleeve can be pushed by the elastic force of the springs, thereby improving the tightness of the cooperation between the two flanges and the flange of the connected pipeline. When wear occurs at the connection, the compensation can be achieved through the elastic force rebound of the springs, with stronger reliability and better sealing effect.

[0030] 3. The present invention provides a drinking water rubber joint. During installation, the compensation protective sleeve and the compensation protection rod can be contracted by pressing the flange, which is convenient for installation. The provided compensation protective sleeve and compensation protection rod are both of split design, and the disassembly and installation are quick and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0032] Figure 2 is a side view of the present invention;

[0033] Figure 3 is a side sectional schematic diagram of the present invention;

[0034] Figure 4 Schematic diagram of the internal structure of the casing of the present invention;

[0035] Figure 5 Schematic diagram of the internal structure of the rubber joint body of the present invention;

[0036] Figure 6 Schematic diagram of the layout structure of the first spring of the present invention;

[0037] Figure 7 is Figure 2 The enlarged view of part A in

[0038] Wherein, 1, the first connecting flange; 2, the second connecting flange; 3, the connecting head; 4, the compensation protection rod; 5, the compensation protection sleeve; 6, the rubber joint body; 7, the sealing surface; 8, the mounting hole; 9, the outer sleeve; 10, the inner edge; 11, the first screw rod; 12, the second screw rod; 13, the casing; 14, the sliding rod; 15, the nut; 16, the first spring; 17, the second spring; 18, the baffle; 19, the sealing sleeve; 20, the inner layer; 21, the middle layer; 22, the wire mesh; 23, the outer layer; 24, the fitting groove; 25, the fitting head; 26, the surrounding sleeve. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0040] Embodiment:

[0041] As Figures 1-7 shown, the embodiment of the present invention provides a drinking water rubber joint, which includes a first connecting flange 1 and a second connecting flange 2. A rubber joint body 6 is fixedly connected between the first connecting flange 1 and the second connecting flange 2. Sealing surfaces 7 are fixedly arranged at both ends of the rubber joint body 6. A compensation protection sleeve 5 sleeved on the outer end of the rubber joint body 6 is arranged between the first connecting flange 1 and the second connecting flange 2. Connecting heads 3 are fixedly arranged on the outer sides of the first connecting flange 1 and the second connecting flange 2, and compensation protection rods 4 are arranged between the opposite connecting heads 3.

[0042] The compensation protection sleeve 5 includes an outer sleeve 9, an inner edge 10 and a first spring 16. A plurality of first springs 16 are arranged at equal intervals around the center of the outer sleeve 9 inside the outer sleeve 9 and fixedly connected to the bottom of the outer sleeve 9. The inner edge 10 extends into the outer sleeve 9 and is slidably connected thereto.

[0043] The compensating protection rod 4 includes a first screw rod 11 and a second screw rod 12. One end of the first screw rod 11 is fixedly connected with a sleeve 13. One end of the second screw rod 12 is fixedly connected with a sliding rod 14. A second spring 17 is fixedly connected inside the sleeve 13. One end of the sliding rod 14 extends into the inside of the sleeve 13 and is slidably connected thereto.

[0044] The rubber joint body 6 includes an inner layer 20, an intermediate layer 21 and an outer layer 23. The intermediate layer 21 is fixedly coated on the outer surface of the inner layer 20. The outer layer 23 is fixedly coated on the outer surface of the intermediate layer 21. A wire mesh 22 is fixedly arranged inside the intermediate layer 21.

[0045] A sealing sleeve 19 is fixedly sleeved at the connection part of the sleeve 13 and the sliding rod 14. One end of the second spring 17 is fixedly connected with a baffle 18. The baffle 18 is slidably connected with the sleeve 13. The sealing sleeve 19 can enhance the sealing performance at the connection part of the sliding rod 14 and the sleeve 13 and play a role in preventing water from entering. The outer sleeve 9 is fixedly connected with the first connecting flange 1. The inner edge 10 is fixedly connected with the second connecting flange 2. The outer sleeve 9 and the inner edge 10 are of a split type, which is convenient for elastic expansion compensation. Both the first screw rod 11 and the second screw rod 12 are connected with the connecting head 3 through two nuts 15. The first screw rod 11 and the second screw rod 12 are firmly connected. The second screw rod 12 can be disassembled after unscrewing the nut 15, which is convenient for installation. The inner layer 20 is made of nylon cord fabric. The intermediate layer 21 is made of raw rubber. The outer layer 23 is made of neoprene. The rubber joint body 6 with a multi-layer structure has good elasticity, high structural strength, is not easily torn, has strong anti-aging and weather resistance. One side of the sealing surface 7 is fixedly provided with a mating head 25. Matching grooves 24 are opened on the outer sides of both the first connecting flange 1 and the second connecting flange 2. The mating head 25 is fixedly connected with the matching groove 24. Through the connection of the mating head 25 and the matching groove 24, the connection stability of the rubber joint body 6 is enhanced. Two expansion spheres are arranged at the middle part of the rubber joint body 6. The spherical design can stretch and move. Compared with a straight-wall rubber pipe, it reduces the damage to the pipe and improves the flexibility and service life of the joint. On one side of both the first connecting flange 1 and the second connecting flange 2, a surrounding sleeve 26 is fixedly provided. The surrounding sleeve 26 is fixedly connected with the rubber joint body 6. A plurality of mounting holes 8 are opened on the outer sides of both the first connecting flange 1 and the second connecting flange 2. The surrounding sleeve 26 can enhance the connection stability of the rubber joint body 6. The mounting holes 8 are convenient for matching with the flange of the pipe.

[0046] Working principle: When in use, this rubber joint is connected between two water pipes through the first connecting flange 1 and the second connecting flange 2. Drinking water enters the rubber joint body 6 from one end. By utilizing the high elasticity of the rubber joint body 6, it can reduce the vibration and noise of the pipeline and compensate for the thermal expansion and contraction caused by temperature changes. At the same time, the provided compensation protection sleeve 5 and compensation protection rod 4 can protect the internal rubber joint body 6, with higher structural strength, and external factors are less likely to affect the internal rubber joint body 6, thereby improving the impact resistance and anti-aging ability, and having a longer service life. Springs are provided inside both the compensation protection sleeve 5 and the compensation protection rod 4. By the elastic force of the springs, the compensation protection rod 4 and the compensation protection sleeve 5 are pushed, thereby improving the tightness of the fit between the two flanges and the pipeline flanges connected. When wear occurs at the connection, the elastic force of the springs can play a compensation role through springback, with stronger reliability and sealing effect.

[0047] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rubber joint for drinking water, comprising a first connecting flange (1) and a second connecting flange (2), characterized in that: A rubber joint main body (6) is fixedly connected between the first connecting flange (1) and the second connecting flange (2). Sealing surfaces (7) are fixedly arranged at both ends of the rubber joint main body (6). A compensation protection sleeve (5) sleeved on the outer end of the rubber joint main body (6) is arranged between the first connecting flange (1) and the second connecting flange (2). Connecting heads (3) are fixedly arranged on the outer sides of the first connecting flange (1) and the second connecting flange (2), and compensation protection rods (4) are arranged between the opposite connecting heads (3); The compensation protection sleeve (5) comprises an outer sleeve (9), an inner edge (10) and a first spring (16). A plurality of the first springs (16) are arranged at equal intervals around the center of the outer sleeve (9) inside the outer sleeve (9) and are fixedly connected to the bottom of the outer sleeve (9). The inner edge (10) extends into the outer sleeve (9) and is slidably connected thereto; The compensation protection rod (4) comprises a first screw rod (11) and a second screw rod (12). One end of the first screw rod (11) is fixedly connected with a sleeve (13). One end of the second screw rod (12) is fixedly connected with a sliding rod (14). A second spring (17) is fixedly connected inside the sleeve (13). One end of the sliding rod (14) extends into the sleeve (13) and is slidably connected thereto; The rubber joint main body (6) comprises an inner layer (20), an intermediate layer (21) and an outer layer (23). The intermediate layer (21) is fixedly coated on the outer surface of the inner layer (20). The outer layer (23) is fixedly coated on the outer surface of the intermediate layer (21). A wire mesh (22) is fixedly arranged inside the intermediate layer (21); A sealing sleeve (19) is fixedly sleeved at the connection between the sleeve (13) and the sliding rod (14). One end of the second spring (17) is fixedly connected with a baffle (18). The baffle (18) is slidably connected with the sleeve (13). The outer sleeve (9) is fixedly connected with the first connecting flange (1). The inner edge (10) is fixedly connected with the second connecting flange (2). Both the first screw rod (11) and the second screw rod (12) are connected with the connecting head (3) through two nuts (15); One side of the sealing surface (7) is fixedly provided with a mating head (25). Mating grooves (24) are formed on the outer sides of the first connecting flange (1) and the second connecting flange (2). The mating head (25) is fixedly connected with the mating groove (24). Surrounding sleeves (26) are fixedly arranged on one side of the first connecting flange (1) and the second connecting flange (2). The surrounding sleeves (26) are fixedly connected with the rubber joint main body (6). A plurality of mounting holes (8) are formed on the outer sides of the first connecting flange (1) and the second connecting flange (2).

2. A rubber joint for drinking water according to claim 1, characterized in that: The inner layer (20) is made of nylon cord fabric, and the outer layer (23) is made of neoprene rubber.

3. A drinking water rubber joint according to claim 1, characterized in that: two expansion spheres are arranged in the middle of the rubber joint body (6).

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