CN221974470U - Electric regulating valve with good sealing effect - Google Patents

Abstract

The closure of the valve body is provided with a sealing cover, and the sealing cover is provided with a sealing cover for sealing the sealing surface. The sealing cover is provided with a sealing cover for sealing the sealing surface. The sealing cover is provided with a sealing cover for sealing the sealing surface. The sealing cover is provided with a sealing cover for sealing the sealing surface. The sealing cover is provided with a sealing cover for sealing the sealing surface. The sealing cover is provided with a sealing cover for sealing the sealing surface. The sealing cover is provided with a sealing cover for sealing the sealing surface. The sealing cover is provided with a sealing cover for sealing the sealing surface. The sealing cover is provided with a sealing cover for sealing the sealing surface. The sealing cover is provided with a sealing cover for sealing the sealing surface. The sealing cover is provided with a sealing cover for sealing the sealing surface. The sealing cover is provided with a sealing cover for sealing the sealing surface. The sealing cover is provided with a sealing cover for sealing the sealing surface. The sealing cover is provided with a sealing cover for sealing the sealing surface. The sealing cover is provided with a sealing cover for sealing the sealing surface. The sealing cover is provided with a sealing cover for sealing the sealing surface. The sealing cover is provided with a sealing cover. The sealing cover is provided with a sealing cover. The sealing cover is provided with a sealing cover. The sealing cover is provided with a sealing cover. The sealing cover is provided with a sealing cover. The sealing cover is provided with a sealing cover. The sealing cover is provided with a sealing cover. The sealing cover is provided with a sealing cover. The sealing cover is provided with a sealing cover. The sealing cover is provided with a sealing cover. The sealing cover is provided with a sealing cover. The sealing cover is provided with a sealing cover.

Description

An electric regulating valve with good sealing effect

Technical Field

The utility model relates to the technical field of valves, in particular to an electric regulating valve with good sealing effect.

Background Art

The pressure differential bypass valve controls the bypass flow of chilled water by controlling the opening of the pressure differential bypass valve, so as to keep the pressure difference between the two ends of the supply and return water mains constant. It is widely used between the central air-conditioning manifold and the heat pump supply and return water, which can effectively prevent the equipment from being damaged.

As shown in the figure, the existing differential pressure bypass valve includes a valve body 1', a valve cover 3' arranged on the valve body 1', a water inlet channel and a water outlet channel opened on the valve body 1', and a valve flap arranged on the water inlet channel and the water outlet channel. The valve cover 3' is provided with a valve stem 2', one end of the valve stem 2' is connected to the valve flap, and the other end of the valve stem 2' passes through the valve cover 3'. The valve cover 3' is located at the valve stem 2' position to start the sealing channel connected to the outside, and three O-type sealing rings 5' are arranged in the sealing channel to prevent water leakage. The threaded connection cover on the valve cover 3' is provided with a sealing cover for sealing the sealing channel, and a spring 6' is also arranged between the valve cover 3' and the O-type sealing ring 5'. Although it can meet the use requirements, there are still the following problems:

1. During assembly, the three sealing rings overlap each other. After pre-tightening and sealing, the valve stem is easily locked, making it difficult for the valve stem to rotate, which is not conducive to the opening of the valve. In addition, during the rotation of the valve stem, the sealing ring is easily damaged, making the valve prone to water leakage, which not only increases the maintenance cost, but also is not conducive to long-term use.

2. When three sealing rings are stacked, if the sealing rings are not installed properly, the sealing rings are prone to tilt, making the installation of the sealing rings unbalanced, thereby affecting the sealing performance of the valve.

In order to solve this problem, the present utility model is produced.

Utility Model Content

Therefore, in view of the above problems, the utility model proposes an electric regulating valve with simple structure, long service life and good sealing effect.

In order to solve the above technical problems, the solution adopted by the utility model is: an electric regulating valve with good sealing effect, comprising a valve body, a valve cover arranged on the valve body, a water inlet channel and a water outlet channel opened on the valve body, and a valve disc arranged on the water inlet channel and the water outlet channel, a valve stem is arranged on the valve cover, one end of the valve stem is connected with the valve disc, and the other end of the valve stem passes through the valve cover, and a sealing device is arranged between the valve cover and the valve stem, and the sealing device comprises a first sealing block, and the valve cover is located at the valve stem position and has a sealing channel, the first sealing block is arranged in the sealing channel, the first sealing block is sleeved on the valve stem, a first sealing groove is opened at the end of the first sealing block, and a first sealing member for preventing water leakage is arranged in the first sealing groove, a sealing cover for sealing the sealing channel is arranged on the valve cover, the valve stem passes through the sealing cover, the sealing cover resists the first sealing block, and a first sealing device is arranged between the sealing cover and the valve cover.

A further improvement is that it also includes a second sealing block, which is arranged in the sealing channel, and the second sealing block is sleeved on the valve stem. A second sealing groove is opened at the end of the second sealing block, and a second sealing member for preventing water leakage is arranged in the second sealing groove.

A further improvement is that: a first inner sealing groove is provided in the first sealing block, and a third sealing member for preventing water leakage is provided in the first inner sealing groove.

A further improvement is that: a second inner sealing groove is provided in the second sealing block, and a fourth sealing member for preventing water leakage is provided in the second inner sealing groove.

A further improvement is that it also includes a spring, which is arranged in the sealing cover, one end of the spring resists the first sealing block, and the other end of the spring resists the sealing cover, and a second sealing device is arranged between the spring and the sealing cover.

A further improvement is that the sealing cover is threadedly connected to the valve cover, and a first sealing ring is provided between the sealing cover and the valve cover.

A further improvement is that the second sealing device includes a gasket, the gasket is arranged between the valve cover and the spring, a second sealing ring is arranged between the gasket and the valve cover, and the second sealing ring is sleeved on the valve stem.

A further improvement is that the first sealing block and the second sealing block are respectively sealing blocks made of polytetrafluoroethylene material.

By adopting the above technical solution, the beneficial effects of the utility model are:

1. Simple structure, long service life, good sealing effect. When in use, the first O-ring and the second O-ring are arranged on the first sealing block and the second sealing block, and then put on the valve stem and put into the sealing channel, which can not only achieve sealing and prevent water leakage, but also the first O-ring and the second O-ring will not squeeze each other and lock the valve stem, which is conducive to the opening and closing of the valve stem. At the same time, the first O-ring and the second O-ring are separated from each other so that they will not squeeze each other, which makes the first O-ring 10 and the second O-ring uneven when installed, further preventing water leakage.

2. The spring can tightly hold the first sealing block and the second sealing block in the sealing channel. When the first sealing block and the second sealing block are deformed, the spring can release elastic force to compensate, thereby ensuring the sealing performance, which is conducive to further improving the sealing performance.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of the structure of a prior art pressure differential bypass valve according to an embodiment of the utility model.

FIG. 2 is a schematic diagram of the structure of an electric regulating valve with good sealing effect according to an embodiment of the utility model.

FIG3 is an enlarged structural diagram of point A in an embodiment of the present utility model.

DETAILED DESCRIPTION

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

Referring to Figures 2-3, the embodiment of the utility model discloses: an electric regulating valve with good sealing effect, comprising a valve body 1, a valve cover 4 arranged on the valve body 1, a water inlet channel 2 and a water outlet channel 3 opened on the valve body 1, a valve flap 5 arranged on the water inlet channel 2 and the water outlet channel 3, a first sealing block 7, a second sealing block 8, and a sealing cover 9, wherein a valve stem 6 is arranged on the valve cover 4, one end of the valve stem 6 is connected to the valve flap 5, and the other end of the valve stem 6 passes through the valve cover 4, the valve cover 4 is located at the position of the valve stem 6 and has a sealing channel, the first sealing block 7 is arranged in the sealing channel, the first sealing block 7 is sleeved on the valve stem 6, and the second sealing block 8 is provided on the valve cover 9. A sealing block 7 has a first sealing groove at the end thereof, a first O-type sealing ring 10 is arranged in the first sealing groove to prevent water leakage, a second sealing block 8 is arranged in the sealing channel, the second sealing block 8 is sleeved on the valve stem 6, a second sealing groove is arranged at the end thereof, a second O-type sealing ring 11 is arranged in the second sealing groove to prevent water leakage, the sealing cover 9 is threadedly connected and arranged on the valve cover 4, the sealing cover 9 resists the first sealing block 7, a first sealing ring is arranged between the sealing cover 9 and the valve cover 4, and the valve stem 6 passes through the sealing cover 9. When in use, the first O-type sealing ring 10 and the second O-type sealing ring 11 are arranged in the first sealing block 7 and the second sealing block 8, and then sleeved on the valve stem 6 and placed in the sealing channel, which can not only achieve sealing and prevent water leakage, but also the first O-type sealing ring 10 and the second O-type sealing ring 11 will not squeeze each other and lock the valve stem 6, which is conducive to the opening and closing of the valve stem 6. At the same time, the first O-ring 10 and the second O-ring 11 are separated from each other so as not to squeeze each other, thereby making the first O-ring 10 and the second O-ring 11 uneven during installation, thereby further preventing water leakage.

In order to further ensure the sealing performance and prevent the sealing rings from being squeezed against each other and leaking, a first inner sealing groove is provided in the first sealing block 7, and a third O-ring 12 is provided in the first inner sealing groove to prevent water leakage. A second inner sealing groove is provided in the second sealing block 8, and a fourth O-ring 13 is provided in the second inner sealing groove to prevent water leakage.

In order to make the first sealing block 7 and the second sealing block 8 tightly sealed in the sealing channel, a spring 14 and a gasket 15 are also included. The spring 14 is arranged in the sealing cover 9, one end of the spring 14 resists the first sealing block 7, and the other end of the spring 14 resists the sealing cover 9. The gasket 15 is arranged between the valve cover 4 and the spring 14. A second sealing ring 16 is arranged between the gasket 15 and the valve cover 4, and the second sealing ring 16 is sleeved on the valve stem 6. Among them, the spring 14 can tightly resist the first sealing block 7 and the second sealing block 8 in the sealing channel. When the first sealing block 7 and the second sealing block 8 are deformed, the spring 14 can release the elastic force for compensation, thereby ensuring the sealing performance, which is conducive to further improving the sealing performance.

In order to facilitate the manufacture of the first sealing block 7 and the second sealing block 8, the first sealing block 7 and the second sealing block 8 are respectively sealing blocks made of polytetrafluoroethylene material.

The basic principles, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles 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 shall fall within the scope of the utility model to be protected. The scope of protection of the utility model shall be defined by the attached claims and their equivalents.

Claims (8)

1. An electric regulating valve with good sealing effect, comprising a valve body, a valve cover arranged on the valve body, a water inlet channel and a water outlet channel opened on the valve body, and a valve disc arranged on the water inlet channel and the water outlet channel, the valve cover is provided with a valve stem, one end of the valve stem is connected to the valve disc, the other end of the valve stem passes through the valve cover, and a sealing device is provided between the valve cover and the valve stem, characterized in that: the sealing device comprises a first sealing block, the valve cover is provided with a sealing channel at the position of the valve stem, the first sealing block is arranged in the sealing channel, the first sealing block is sleeved on the valve stem, a first sealing groove is provided at the end of the first sealing block, a first sealing member for preventing water leakage is provided in the first sealing groove, a sealing cover for sealing the sealing channel is provided on the valve cover, the valve stem passes through the sealing cover, the sealing cover resists the first sealing block, and a first sealing device is provided between the sealing cover and the valve cover. 2. An electric regulating valve with good sealing effect according to claim 1, characterized in that it also includes a second sealing block, the second sealing block is arranged in the sealing channel, the second sealing block is sleeved on the valve stem, a second sealing groove is opened at the end of the second sealing block, and a second sealing member for preventing water leakage is arranged in the second sealing groove. 3. An electric regulating valve with good sealing effect according to claim 1, characterized in that: a first inner sealing groove is opened in the first sealing block, and a third sealing member for preventing water leakage is arranged in the first inner sealing groove. 4. An electric regulating valve with good sealing effect according to claim 2, characterized in that: a second inner sealing groove is provided in the second sealing block, and a fourth sealing member for preventing water leakage is provided in the second inner sealing groove. 5. An electric regulating valve with good sealing effect according to claim 1, characterized in that it also includes a spring, wherein the spring is arranged in the sealing cover, one end of the spring resists the first sealing block, and the other end of the spring resists the sealing cover, and a second sealing device is arranged between the spring and the sealing cover. 6. An electric regulating valve with good sealing effect according to claim 1, characterized in that: the sealing cover is threadedly connected to the valve cover, and a first sealing ring is arranged between the sealing cover and the valve cover. 7. An electric regulating valve with good sealing effect according to claim 5, characterized in that: the second sealing device includes a gasket, the gasket is arranged between the valve cover and the spring, a second sealing ring is arranged between the gasket and the valve cover, and the second sealing ring is sleeved on the valve stem. 8. An electric regulating valve with good sealing effect according to claim 1, characterized in that the first sealing block and the second sealing block are respectively sealing blocks made of polytetrafluoroethylene material.