Novel plastic plug with high sealing capacity

Abstract

The utility model discloses a novel plastic plug with strong sealing capability, which comprises a plug, the plug consists of an upper connector and a lower plug, a sealing rubber ring is sleeved at the top of the lower plug, an inflatable rubber ring is arranged at the bottom of the lower plug, threads are arranged on the surface of the upper connector and connected with a threaded seat, and an air inlet channel is arranged on the surface of the top of the plug. The air inlet channel is communicated with the inflatable rubber ring, and a one-way valve is mounted at an air inlet of the air inlet channel; according to the design, the sealing rubber ring can be extruded by rotating the threaded seat, so that the sealing rubber ring is better attached to the contact surface, and the sealing effect is better; the inflatable rubber ring is arranged at the bottom of the lower plug body of the plug, the inflatable rubber ring can bulge to be attached to the contact faces on the two sides in a sealed mode through inflation, due to the flexibility of rubber, the rubber hollow ring expanded after inflation has plasticity, and after the expanded rear face makes contact with the sealing face, flexible curve deformation occurs, and therefore the periphery can be sealed; therefore, double-layer sealing is achieved, and the sealing effect is good.

Description

Technical Field

[0001] The utility model discloses a novel plastic plug with strong sealing ability, belonging to the field of plugs. Background Art

[0002] The plug is also called the pipe cap. It is used to plug the unnecessary openings in the pipe to seal it. It has the same function as the blind plate, the end cap and the pipe cap. There are many types of plugs and they are widely used. As long as there are pipes, plugs will be used. According to the different materials of the plugs, they can be roughly divided into plastic plugs, iron plugs, stainless steel plugs, copper plugs, aluminum plugs, etc. Plugs are used in all aspects of life, such as water pipes, mechanical equipment, and the most commonly used plugs in the hydraulic industry are engineering machinery and equipment.

[0003] Today's plastic plugs are usually sealed with sealant, which is easily damaged. Excessive or uneven application may cause the glue layer to be too thick, affecting its bonding effect. Exposing the glue to the air too early may cause its hardening time to be too short, and the interface cannot be completely sealed. In addition, when used in an environment with large temperature changes, the sealant is likely to become softened by heat or brittle by cold. On the other hand, plastic plugs are usually sealed in a single layer, which can easily lead to poor sealing over time, thus affecting the sealing effect. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a new type of plastic plug with strong sealing ability, so as to solve the problem that the current plastic plugs are usually sealed with sealing glue, the sealing glue is easily damaged, and excessive or uneven application may cause the glue layer to be too thick, affecting its bonding effect; exposing the glue to the air too early may cause its hardening time to be too short, and the interface cannot be completely sealed; in addition, if used in an environment with large temperature changes, it is also easy for the sealant to become soft due to heat or brittle due to cold. On the other hand, the plastic plug seal is usually a single-layer seal, which is easy to cause the sealing to deteriorate over time, thereby affecting the sealing effect.

[0005] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical scheme: a new type of plastic plug with strong sealing ability, including a plug, characterized in that the plug is composed of an upper connecting head and a lower plug, the top of the lower plug is sleeved with a sealing rubber ring, and the sealing rubber ring is provided with a notch, the bottom of the upper connecting head passes through the sealing rubber ring, and the top notch is fixedly connected to the lower plug, an inflatable rubber ring is provided at the bottom of the lower plug, the surface of the upper connecting head is provided with a thread and is connected to a threaded seat, the top surface of the plug is provided with an air inlet duct, the air inlet duct is connected to the inflatable rubber ring, and a one-way valve is installed at the air inlet of the air inlet duct.

[0006] Furthermore, a rubber ring is protruding from the bottom of the threaded seat, so that the rubber ring can first contact the sealing rubber ring, play a certain protective role, and facilitate the squeezing of the sealing rubber ring.

[0007] Furthermore, the diameter of the threaded seat is larger than the inner diameter of the notch and smaller than the diameter of the sealing rubber ring, so that when the threaded seat is rotated downward, it can contact the surface of the sealing rubber ring, which is convenient for extrusion.

[0008] Furthermore, the sealing rubber ring is fixed on the top of the lower plug and is an integrated structure, which can be easily installed and prevent the sealing rubber ring from falling off.

[0009] Furthermore, when the inflatable rubber ring is inflated, its diameter is larger than the diameter of the lower plug, so that the inflatable rubber ring can bulge outwards, thereby facilitating the fitting of the surface walls on both sides.

[0010] Furthermore, the surface of the lower plug is provided with threads, and can be connected in a spiral manner, which is simple and convenient.

[0011] Furthermore, the one-way valve includes an air inlet, a spring top sheet, and an air outlet. The top of the spring top sheet is in contact with the air inlet, and the air outlet is arranged on both sides of the bottom of the spring top sheet. The one-way valve can be used to prevent the airbag gas from overflowing. When no external force is applied, the spring top sheet will hold up the air inlet to prevent the gas from escaping.

[0012] Beneficial Effects

[0013] The utility model discloses a new type of plastic plug with strong sealing ability:

[0014] 1. It can squeeze the sealing rubber ring by rotating the threaded seat, making it fit more closely with the contact surface and achieving better sealing effect;

[0015] 2. Furthermore, an inflatable rubber ring is provided at the bottom of the lower plug of the plug. By inflation, the inflatable rubber ring can be inflated to fit and seal with the contact surfaces on both sides. Due to the flexibility of rubber, the inflated hollow rubber ring has plasticity. After the expanded back contacts the sealing surface, a flexible curve deformation occurs, which can seal the periphery, thereby realizing double-layer sealing with good sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0017] Figure 1 This is a schematic diagram of the main structure of a new type of plastic plug with strong sealing ability in the utility model;

[0018] Figure 2This is a schematic diagram of the main structure of a new type of plastic plug with strong sealing ability in the utility model;

[0019] Figure 3 It is a schematic diagram of the structure of the plug body thread seat rotation and the inflatable rubber ring bulging of a new type of plastic plug with strong sealing ability of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of a one-way valve of a new type of plastic plug with strong sealing ability in the utility model;

[0021] Figure 5 The utility model is a schematic diagram of the expanded structure of an upper connecting head and a lower plug of a new type of plastic plug with strong sealing ability.

[0022] In the figure: plug 1, sealing rubber ring 2, inflatable rubber ring 3, upper connector 11, lower plug 12, threaded seat 13, air inlet 14, notch 21, rubber ring 131, one-way valve 141, air inlet 1411, spring top 1412, air outlet 1413. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. In the description of the utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] Example 1

[0025] like Figure 1-5As shown, a new type of plastic plug with strong sealing ability includes a plug 1, characterized in that the plug 1 is composed of an upper connector 11 and a lower plug 12, the top of the lower plug 12 is sleeved with a sealing rubber ring 2, and the sealing rubber ring 2 is provided with a notch 21, the bottom of the upper connector 11 passes through the sealing rubber ring 2, and the top notch 21 is fixedly connected to the lower plug 12, the bottom of the lower plug 12 is provided with an inflatable rubber ring 3, the surface of the upper connector 11 is provided with a thread and is connected to a threaded seat 13, and the top surface of the plug 1 is provided with an air inlet 14, the air inlet The air inlet 14 is connected with the inflatable rubber ring 3, and a one-way valve 141 is installed at the air inlet of the air inlet 14; the above-mentioned can be achieved by rotating the threaded seat 13 downward, at which time the threaded seat 13 will squeeze the sealing rubber ring 2, so that the bottom of the sealing rubber ring 2 can fit the contact surface more closely, thereby improving the sealing effect; furthermore, after installation, the air inlet 14 can be inflated by an inflation device with a head pressure gauge, so that the inflatable rubber ring 3 swells up and fits the surface walls on both sides of the contact surface, thereby sealing the lower plug 12, with double sealing and better sealing effect. The one-way valve 141 can prevent air leakage.

[0026] In this embodiment, a rubber ring 131 is protruding from the bottom of the threaded seat 13 , which can make the rubber ring 131 first contact the sealing rubber ring 2 , play a certain protective role, and facilitate the squeezing of the sealing rubber ring 2 .

[0027] In this embodiment, the diameter of the threaded seat 13 is larger than the inner diameter of the notch 21 and smaller than the diameter of the sealing rubber ring 2, so that when the threaded seat 13 is rotated downward, it can contact the surface of the sealing rubber ring 2, which is convenient for extrusion.

[0028] In this embodiment, the sealing rubber ring 2 is fixed to the top of the lower plug 12 and is an integrated structure, which is convenient for installation and prevents the sealing rubber ring 2 from falling off.

[0029] In this embodiment, the diameter of the inflatable rubber ring 3 when inflated is larger than the diameter of the lower plug 12 , which can make the inflatable rubber ring 3 bulge outwards, thereby facilitating the fitting of the surface walls on both sides.

[0030] In this embodiment, the surface of the lower plug 12 is provided with threads, and the above can be connected in a spiral manner, which is simple and convenient.

[0031] In this embodiment, the one-way valve 141 includes an air inlet 1411, a spring top sheet 1142, and an air outlet 1143. The top of the spring top sheet 1142 is in contact with the air inlet 1411, and the air outlet 1143 is arranged on both sides of the bottom of the spring top sheet 1142. The one-way valve 141 can prevent the airbag gas from overflowing. When there is no external force, the spring top sheet 1412 will press against the air inlet 1411 to prevent the gas from escaping.

[0032] Example 2

[0033] The utility model provides a novel plastic plug with strong sealing ability. Another inflatable rubber ring 3 can be installed at the bottom of the inflatable rubber ring 3, and they are interconnected and can be stacked, so that multiple sealing can be performed, and the sealing effect will be better.

[0034] When in use, by turning the threaded seat 13 downward, the threaded seat 13 will squeeze the sealing rubber ring 2, so that the bottom of the sealing rubber ring 2 can fit the contact surface more closely, making its sealing effect better. Moreover, after installation, the air inlet 14 can be inflated through the air-inflating device with a head pressure gauge, so that the inflatable rubber ring 3 swells up and fits the surface walls on both sides of the contact surface, thereby sealing the lower plug 12, double sealing, and better sealing effect. The one-way valve 141 can prevent air leakage. When not affected by external force, the spring top plate 1412 , it will hold up the air inlet 1411 to prevent the gas from escaping; this design can squeeze the sealing rubber ring by rotating the threaded seat to make it fit more closely to the contact surface and achieve better sealing effect; furthermore, an inflatable rubber ring is provided at the bottom of the lower plug of the plug, which can be inflated to make the inflatable rubber ring swell and fit closely to the contact surfaces on both sides for sealing; due to the flexible characteristics of the rubber, the inflated hollow rubber ring is plastic after being expanded, and after the expanded back contacts the sealing surface, a flexible curve deformation occurs, which can seal the periphery, thereby achieving a double-layer seal with good sealing effect.

[0035] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0036] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A new type of plastic plug with strong sealing ability, comprising a plug (1), characterized in that: The plug (1) is composed of an upper connector (11) and a lower plug (12); a sealing rubber ring (2) is sleeved on the top of the lower plug (12), and the sealing rubber ring (2) is provided with a notch (21); the bottom of the upper connector (11) passes through the sealing rubber ring (2), and the top notch (21) is fixedly connected to the lower plug (12); an inflatable rubber ring (3) is provided at the bottom of the lower plug (12); a thread is provided on the surface of the upper connector (11) and is connected to a threaded seat (13); an air inlet (14) is provided on the top surface of the plug (1); the air inlet (14) is communicated with the inflatable rubber ring (3); a one-way valve (141) is installed at the air inlet of the air inlet (14); The surface of the upper connector (11) is provided with threads and is connected to a threaded seat (13), and a rubber ring (131) is protruding from the bottom of the threaded seat (13).

2. A new type of plastic plug with strong sealing ability according to claim 1, characterized in that: The diameter of the threaded seat (13) is larger than the inner diameter of the notch (21) and smaller than the diameter of the sealing rubber ring (2).

3. A new type of plastic plug with strong sealing ability according to claim 1, characterized in that: The sealing rubber ring (2) is fixed on the top of the lower plug (12) and forms an integrated structure.

4. A new type of plastic plug with strong sealing ability according to claim 1, characterized in that: When the inflatable rubber ring (3) is filled with air, its diameter is greater than the diameter of the lower plug (12).

5. The novel plastic plug with strong sealing ability according to claim 1 is characterized in that: The surface of the lower plug (12) is provided with threads.

6. The novel plastic plug with strong sealing ability according to claim 1 is characterized by: The one-way valve (141) comprises an air inlet (1411), a spring top sheet (1142), and an air outlet (1143); the top of the spring top sheet (1142) is in contact with the air inlet (1411), and the air outlet (1143) is arranged on both sides of the bottom of the spring top sheet (1142).

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