Improved electric two-way valve element

Abstract

The improved electric two-way valve element is simple in structure, good in sealing performance and long in service life and comprises a cylinder body and a pressing cylinder, a first channel for water flow to pass through is formed in the cylinder body, a first connecting base is arranged in the first channel, a second channel for water flow to pass through is formed in the pressing cylinder, and a second connecting base is arranged in the second channel. The first channel is internally provided with a first connecting seat, the second channel is internally provided with a second connecting seat, the first connecting seat and the second connecting seat are respectively provided with a through hole for a valve rod to penetrate through, the cylinder body is provided with a sealing protrusion, a sealing groove is formed between the sealing protrusion and the cylinder body, a sealing piece is arranged in the sealing groove, and the pressing cylinder is arranged on the sealing piece in a pressing mode. And a fixing device connected into a whole is arranged between the pressing cylinder and the cylinder body.

Description

Technical Field

[0001] This utility model relates to the field of fire valve technology, and in particular to an improved electric two-way valve core. Background Technology

[0002] The electric two-way valve's valve core controls fluid flow by using an electric actuator to move the valve stem and valve core up and down, opening or closing the water passage. The valve core mainly consists of a valve body, valve core, valve stem, and electric actuator. The valve body has an inlet and an outlet channel, forming a water passage between them. The valve body also has a sealing channel for the valve core's open end to be tightly inserted. The electric actuator is located at the top of the valve body, connected to the valve core at the valve stem end. The electric actuator moves the valve stem up and down, causing the valve core's connecting end to press against the water passage, blocking the water flow. When the valve core's connecting end presses against the water passage, the open end of the valve core remains within the sealing channel, allowing water to flow only along the inside of the valve core until the flow stops at the sealing channel.

[0003] like Figure 1 The existing electric two-way valve core developed by our company includes a cylinder 1' with a first channel for water flow. A sealing protrusion is located around the end of the cylinder 1' at the end of the first channel, forming a sealing groove between the sealing protrusion and the upper surface of the cylinder 1'. A sealing ring 3' is located within the sealing groove. A pressing cylinder 2' for pressing the sealing ring 3' is located on the cylinder 1'. The pressing cylinder 2' has a second channel for water flow. A first connecting seat 4' is located within the first channel, and a second connecting seat 5' is located within the second channel. A valve stem passes through both the first and second connecting seats 4' and 5'. One end of the valve stem abuts against the second connecting seat 5', and the other end extends out of the first connecting seat 4' and is locked in place by a nut, connecting the valve stem, cylinder 1', and pressing cylinder 2' into a single unit. While this meets the usage requirements, the following problems still exist:

[0004] 1. The valve stem, cylinder, and pressure cylinder are locked together with bolts. When the bolts loosen, the pressure cylinder cannot properly press the sealing ring, leading to sealing problems. Furthermore, the bolts are locked in the middle of the valve stem, resulting in insufficient pressing of the sealing ring at the end.

[0005] 2. During assembly, in order to lock the cylinder and the pressing cylinder, when the bolts are tightened, the first connecting seat and the second connecting seat are prone to deformation and damage.

[0006] 3. During use, due to the gap between the first and second connecting seats, the first connecting seat is prone to deformation when water hammer impacts or the valve core is pulled.

[0007] To solve the above problems, this utility model was developed. Utility Model Content

[0008] Therefore, in view of the above problems, this utility model proposes an improved electric two-way valve core with simple structure, good sealing performance and long service life.

[0009] To solve the above-mentioned technical problems, the solution adopted by this utility model is as follows: an improved electric two-way valve core, including a cylinder and a pressing cylinder. The cylinder has a first channel for water to flow through, and a first connecting seat is provided in the first channel. The pressing cylinder has a second channel for water to flow through, and a second connecting seat is provided in the second channel. The first connecting seat and the second connecting seat are respectively provided with through holes for the valve stem to pass through. The cylinder has a sealing protrusion, and a sealing groove is provided between the sealing protrusion and the cylinder. A sealing element is provided in the sealing groove. The pressing cylinder is pressed onto the sealing element. A fixing device is provided between the pressing cylinder and the cylinder to connect them as one unit.

[0010] A further improvement is that the fixing device is such that the first connecting seat and the second connecting seat are connected by several bolts.

[0011] A further improvement is that an elastic pad is provided between the first connecting seat and the second connecting seat.

[0012] A further improvement is that the valve stem is locked onto the first connecting seat by a nut.

[0013] A further improvement is that three bolts are evenly distributed in a ring on the first and second connecting seats.

[0014] By adopting the aforementioned technical solution, the beneficial effects of this utility model are:

[0015] The structure is simple, the sealing performance is good, and the service life is long. During use, the bolts connect the first and second connecting seats, allowing the pressing cylinder to independently press the sealing ring. This not only improves the sealing effect but also prevents the pressing cylinder from loosening and causing the sealing ring to loosen, leading to leakage, if the nut on the valve stem loosens. Furthermore, using bolts to connect the first and second connecting seats as a single unit increases their rigidity, making them less prone to deformation and damage under tension or impact, thus promoting long-term use. The bolted connection also facilitates installation and allows for independent replacement and maintenance of the valve stem, making it more convenient and cost-effective. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the electric two-way valve core in the background art of the present utility model embodiment.

[0017] Figure 2 This is a schematic diagram of the valve core structure of an improved electric two-way valve according to an embodiment of this utility model.

[0018] Figure 3 This is a schematic diagram of the valve core structure of an improved electric two-way valve according to an embodiment of this utility model. Detailed Implementation

[0019] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0020] refer to Figures 2-3 The present invention discloses an improved electric two-way valve core, comprising a cylinder 1 and a pressing cylinder 2. The cylinder 1 has a first channel for water flow, and a first connecting seat 3 is provided in the first channel. The pressing cylinder 2 has a second channel for water flow, and a second connecting seat 4 is provided in the second channel. The first connecting seat 3 and the second connecting seat 4 are respectively provided with through holes 6 for valve stems to pass through. The cylinder 1 has a sealing protrusion, and a sealing groove is provided between the sealing protrusion and the cylinder 1. A sealing ring 5 is provided in the sealing groove. The pressing cylinder 2 is pressed onto the sealing element. The first connecting seat 3 and the second connecting seat 4 are connected by three bolts 7, which are evenly distributed in a ring on the first connecting seat 3 and the second connecting seat 4.

[0021] In use, the bolts connecting the first connecting seat 3 and the second connecting seat 4 allow the pressing cylinder 2 to independently press the sealing ring 5. This not only improves the sealing effect but also prevents the pressing cylinder 2 from loosening and causing the sealing ring 5 to loosen, thus avoiding leakage problems, if the nut on the valve stem loosens. Furthermore, using bolts to connect the first connecting seat 3 and the second connecting seat 4 as a single unit increases their rigidity, making them less prone to deformation and damage during pulling or impact, thus promoting long-term use. The bolted connection also facilitates installation and allows for independent replacement and maintenance of the valve stem, making it more convenient and cost-effective.

[0022] In order to further protect the first connecting seat 3 and the second connecting seat 4 and reduce the impact of water hammer and pulling on the first connecting seat 3 and the second connecting seat 4, an elastic pad (not shown in the figure) is provided between the first connecting seat 3 and the second connecting seat 4.

[0023] To facilitate the connection of the valve stem, the valve stem passes through the through hole 6 and is locked onto the first connecting seat 3 by a nut.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions above are only illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. An improved electrically operated two-way valve spool, characterized by: The utility model relates to a valve, including cylinder and pressing cylinder, first passageway for water flow through is set up on the cylinder, first connecting seat is equipped in first passageway, second passageway for water flow through is set up in the pressing cylinder, second connecting seat is equipped in second passageway, the first connecting seat and second connecting seat are set up the perforation for valve stem to pass through respectively, the cylinder is equipped with sealing boss, the sealing boss is equipped with sealing groove between cylinder, sealing piece is equipped in sealing groove, and the pressing cylinder is pressed on sealing piece, and the fixed device of being connected into an organic whole is equipped between pressing cylinder and cylinder.

2. An improved electrically operated two-way valve spool as defined in claim 1, wherein: The fixed device is that the first connecting seat and the second connecting seat are connected through a plurality of bolts.

3. An improved electrically operated two-way valve spool as defined in claim 1, wherein: Elastic pads are arranged between the first connecting seat and the second connecting seat.

4. An improved electrically operated two-way valve spool as defined in claim 1, wherein: The valve stem is locked on the first connecting seat by a nut.

5. An improved electrically operated two-way valve spool as defined in claim 2 wherein: The bolts are arranged in a ring shape on the first connecting seat and the second connecting seat.

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