Vacuum pressure relief device for faucet

Abstract

The utility model relates to the technical field of faucets, and provides a vacuum pressure relief device for a faucet, which is convenient to disassemble and maintain and high in mounting efficiency, and comprises a pipe body and an air inlet hole arranged on the outer wall above the pipe body, an opening and closing sheet is arranged on the inner wall of the pipe body in a sliding manner, and an outer convex ring for stopping the opening and closing sheet from moving upwards is arranged on the inner wall of the pipe body. A limiting frame is arranged on the inner wall of the pipe body and located below the opening and closing piece, an elastic piece is arranged between the limiting frame and the opening and closing piece, and the horizontal height of the bottom end of the outer protruding ring is smaller than that of the air inlet hole.

Description

Technical Field

[0001] The utility model relates to the technical field of faucets, and in particular to a vacuum pressure relief device for faucets. Background Art

[0002] Faucet is a popular name for water valve, which is used to control the size of the water flow switch. Faucets are not only used in daily households, but are also often used as important components to control the on-off of pipelines in some chemical fields. However, during long-term use, it was found that there were some problems with existing faucets. For example, when there is a lack of solution in the faucet pipeline, a vacuum will be formed in the pipeline. This causes some faucets immersed in the solution to form a siphon reflux phenomenon when they are opened when there is a vacuum in the pipeline. The conventional means to solve this siphon reflux phenomenon is to add a vacuum valve to the faucet.

[0003] A vacuum faucet disclosed in Chinese patent number CN214789374U includes a main pipe, a vacuum chamber, an adjusting bolt, a pressure relief pipe and a dust cover, wherein one end of the main pipe passes through the outer surface of the vacuum chamber, the lower end of the vacuum chamber is connected to the adjusting bolt by a thread, the upper surface of the vacuum chamber is provided with a pressure relief pipe, the upper end of the pressure relief pipe is connected to a dust cover for shielding dust, a limit plate is fixed inside the vacuum chamber, a sealing rod is provided inside the vacuum chamber, the lower end of the sealing rod is fixedly connected to a sealing plug, and a sleeve rod is fixed to the lower surface of the sealing plug. This patent uses the pressure relief pipe in conjunction with the dust cover to draw in outside air when a vacuum is formed in the faucet, which can solve the siphon reflux phenomenon of the faucet fascia in the solution caused by the vacuum.

[0004] Although the above patent can solve the corresponding technical problems, there are still certain defects: the existing pressure relief pipe is provided with various components such as a limit plate, a sealing rod and a sealing plug, and the internal structure is relatively complicated. When damage occurs, it is difficult to locate the damaged part, and there are many steps to disassemble small parts, which is difficult to disassemble and very inconvenient for subsequent maintenance and repair. At the same time, during installation, too many parts are arranged in the pressure relief pipe, resulting in many installation steps and complicated operation, inconvenient use, and low installation efficiency. Utility Model Content

[0005] The utility model aims to provide a vacuum pressure relief device for a faucet with convenient disassembly and repair and high installation efficiency in view of the defects and shortcomings of the prior art.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a vacuum pressure relief device for a faucet, comprising a tube body and an air inlet hole arranged on the outer wall above the tube body, an opening and closing piece is slidably provided on the inner wall of the tube body, an outer convex ring is provided on the inner wall of the tube body for blocking the opening and closing piece from moving upward, a limit frame is provided on the inner wall of the tube body below the opening and closing piece, an elastic member is provided between the limit frame and the opening and closing piece, and the horizontal height of the bottom end of the outer convex ring is lower than the horizontal height of the air inlet hole.

[0007] A further improvement is that the outer wall of the bottom of the tube body is also provided with a threaded layer for connecting to a faucet.

[0008] A further improvement is that a limiting rod is further provided on the bottom surface of the opening and closing piece, the outer wall of the limiting rod is slidably connected to the center of the limiting frame, and the elastic member is wound around the outside of the limiting rod.

[0009] A further improvement is that: the outer wall of the opening and closing piece is provided with a plurality of closed grooves, and a sealing ring is sleeved in the closed groove.

[0010] A further improvement is that a pressure groove is provided on the upper surface of the opening and closing piece.

[0011] A further improvement is that the limit frame includes a limit block slidably connected to the outer wall of the limit rod and a connecting frame arranged on the outer wall of the limit block and detachably connected to the tube body, and a sliding through hole is provided in the center of the limit block for accommodating the sliding of the limit rod.

[0012] A further improvement is that: the sliding through hole is a regular hexagonal through hole.

[0013] After adopting the above technical scheme, the beneficial effects of the utility model are as follows: the utility model releases pressure through the separated pipe body and the opening and closing piece, and limits the opening and closing piece through the limit frame. When damage occurs, it is only necessary to quickly remove the limit frame and the opening and closing piece for inspection and replacement. At the same time, when installing, it is only necessary to connect the opening and closing piece and the elastic part to the limit frame and then buckle them into the pipe body to complete the installation. The installation and disassembly steps are few and simple, which makes disassembly and repair more convenient and greatly improves the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the pressure relief pipe of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the front cross section of the pressure relief pipe of the utility model in a closed state;

[0017] Figure 3 It is a schematic diagram of the structure of the front view cross section of the pressure relief pipe of the utility model in the open state;

[0018] Figure 4 It is a schematic diagram of the structure of the top cross section of the limiting frame of the utility model. DETAILED DESCRIPTION

[0019] The utility model is now further described in conjunction with the accompanying drawings and specific embodiments.

[0020] See also Figure 1-4 As shown, the technical solution adopted in this specific embodiment is: a vacuum pressure relief device for a faucet, comprising a tube body 1 and an air inlet 2 arranged on the outer wall above the tube body 1, an opening and closing piece 21 is slidably provided on the inner wall of the tube body 1, an outer convex ring is provided on the inner wall of the tube body 1 for blocking the opening and closing piece 21 from moving upward, a limiting frame 23 is provided on the inner wall of the tube body 1 below the opening and closing piece 21, an elastic member 24 is provided between the limiting frame 23 and the opening and closing piece 21, the horizontal height of the bottom end of the outer convex ring is lower than the horizontal height of the air inlet 2, so as to prevent the opening and closing piece 23 from excessively moving upward to a height exceeding the air inlet 2 and failing to play the opening and closing effect, and when a vacuum is generated in the faucet, the inner convex ring is used to prevent the opening and closing piece 21 from moving upward. The external air pressure difference allows the gas to enter the tube body 1 through the air inlet 2, thereby pushing the opening and closing piece 21 downward, causing it to move downward and lose its fit with the outer convex ring in the tube body 1 to create a gap, allowing the gas to enter the tube body 1 and flow downward. At the same time, the limiting frame 23 is used to limit its excessive downward movement, so that the external air flow can enter and quickly balance the air pressure inside and outside the faucet. After the balance, the elastic force of the elastic member 24 pushes the opening and closing piece 21 upward to make it fit on the outer convex ring again, and the tube body 1 is closed. At the same time, the detachable limiting frame 23, the elastic member 24 and the opening and closing piece 21 can be removed together when disassembling and assembling, making the disassembly and assembly faster and simpler;

[0021] The outer wall at the bottom of the tube body 1 is also provided with a threaded layer 3 for connecting to the faucet; this is conducive to making the tube body 1 more convenient to connect and install on the faucet;

[0022] The bottom surface of the opening and closing piece 21 is also provided with a limit rod 22, and the outer wall of the limit rod 22 is slidably connected to the center of the limit frame 23. The limit frame 23 includes a limit block 45 slidably connected to the outer wall of the limit rod 22 and a connecting frame 46 provided on the outer wall of the limit block 45 and detachably connected to the tube body 1. The center of the limit block 45 is provided with a sliding through hole 451 for accommodating the sliding of the limit rod 22. The elastic member 24 is wound around the outside of the limit rod 22, and the limit rod 22 is inserted into the sliding through hole 451 on the limit block 45 on the limit frame 23 to keep the trajectory of the opening and closing piece 21 vertical when it moves downward, and the elastic member 24 is wound around the outside of the limit rod 22 so that the elastic member 24 will not be skewed when it is compressed, so that the elastic force when pushing the opening and closing piece 21 upward can also be kept vertical, so that the opening and closing piece 21 can be kept vertical when moving up and down without causing air leakage or water leakage due to the skewed movement trajectory;

[0023] The outer wall of the opening and closing piece 21 is provided with a plurality of closed grooves 25. In this embodiment, there is only one closed groove. A sealing ring is sleeved in the closed groove 25, which is beneficial to enhance the sealing effect when the opening and closing piece 21 is fitted with the outer convex ring to avoid air leakage and water leakage.

[0024] The upper surface of the opening and closing piece 21 is provided with a pressurizing groove 26, which is conducive to increasing the impact force of the airflow on the upper surface of the opening and closing piece 21 when it flows downward, so that it is pressed down faster;

[0025] The sliding through hole 451 is a regular hexagonal through hole, which is beneficial to reduce the friction strength on the outer wall of the limiting rod 43 by reducing the contact area with the limiting rod 22, thereby making the sliding more smooth.

[0026] Working principle of the utility model: before use, the utility model is installed on the faucet. When a vacuum is generated in the faucet, the gas can enter the tube body 1 through the air inlet 2 due to the internal and external air pressure difference, thereby pushing the opening and closing piece 21 downward, causing it to move downward and lose its fit with the outer convex ring in the tube body 1, creating a gap, allowing the gas to enter the tube body 1 and flow downward. At the same time, the limiting frame 23 is used to limit its excessive downward movement, and then the external air flow can enter to quickly balance the internal and external air pressures of the faucet, and after balance, the opening and closing piece 21 is pushed up by the elastic force of the elastic member 24 to make it fit again on the outer convex ring, thereby sealing the tube body 1. At the same time, the detachable limiting frame 23, the elastic member 24 and the opening and closing piece 21 can be removed together with the elastic member 24 and the opening and closing piece 21 during disassembly and assembly, making disassembly and assembly faster and simpler.

[0027] The utility model is intended to protect the structure of the product. The model of each component is not the content of the utility model, and it is also a known technology. Any component on the market that can achieve the above functions of the utility model can be used as a choice. Therefore, the model and other parameters of the component are not described in detail in this utility model. The contribution of this utility model lies in the scientific combination of various components.

[0028] The above shows and describes the basic principle and main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents. Anything not described in detail in the utility model is a well-known technology of those skilled in the art.

Claims

1. A vacuum pressure relief device for a faucet, comprising a tube body (1) and an air inlet hole (2) arranged on an outer wall above the tube body (1), characterized in that: An opening and closing piece (21) is slidably provided on the inner wall of the tube body (1), an outer convex ring for blocking the opening and closing piece (21) from moving upwards is provided on the inner wall of the tube body (1), a limiting frame (23) is provided on the inner wall of the tube body (1) below the opening and closing piece (21), an elastic member (24) is provided between the limiting frame (23) and the opening and closing piece (21), and the horizontal height of the bottom end of the outer convex ring is lower than the horizontal height of the air inlet hole (2).

2. A vacuum pressure relief device for a faucet according to claim 1, characterized in that: The outer wall of the bottom of the tube body (1) is also provided with a threaded layer (3) for connecting to a faucet.

3. The vacuum pressure relief device for a faucet according to claim 1, characterized in that: A limiting rod (22) is also provided on the bottom surface of the opening and closing piece (21), the outer wall of the limiting rod (22) is slidably connected to the center of the limiting frame (23), and the elastic member (24) is wound around the outside of the limiting rod (22).

4. A vacuum pressure relief device for a faucet according to claim 1, characterized in that: The outer wall of the opening and closing piece (21) is provided with a plurality of closed grooves (25), and a sealing ring is sleeved inside the closed groove (25).

5. The vacuum pressure relief device for a faucet according to claim 1, characterized in that: The upper surface of the opening and closing piece (21) is provided with a pressurizing groove (26).

6. The vacuum pressure relief device for a faucet according to claim 3, characterized in that: The limiting frame (23) comprises a limiting block (45) slidably connected to the outer wall of the limiting rod (22) and a connecting frame (46) disposed on the outer wall of the limiting block (45) and detachably connected to the tube body (1); a sliding through hole (451) for accommodating the sliding of the limiting rod (22) is provided at the center of the limiting block (45).

7. A vacuum pressure relief device for a faucet according to claim 6, characterized in that: The sliding through hole (451) is a regular hexagonal through hole.

Images