Zero-leakage valve element structure of electric control valve
By adopting a design that uses a connecting pipe and a fixed seat threaded connection in the valve core of the electric regulating valve, the problems of poor sealing and easy damage to the connecting seat are solved, achieving a valve core structure with high sealing performance and long service life, and simplifying assembly and maintenance.
Patent Information
- Application Number
- CN202520311838.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-02-26
AI Technical Summary
Existing electric control valves have problems with poor sealing, easy damage to the connecting seat, and difficult assembly, especially prone to leakage under water hammer impact and pulling conditions.
The connecting pipe and the fixed seat are connected by threads to fix the pressing cylinder and the cylinder body as one unit. The valve stem is locked with a nut to ensure that the sealing ring is always pressed, which enhances the sealing performance and improves the rigidity of the connecting seat to resist impact and deformation.
It achieves excellent sealing performance and extended service life, reduces the risk of leakage, simplifies the assembly and maintenance process, and reduces maintenance costs.
Smart Images
Figure CN223908827U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to fire fighting valve technical field, especially in a kind of zero leakage electric regulating valve valve core structure. BACKGROUND
[0002] Electric regulating valve is driven by electric actuator to lift valve stem and valve core to open or close water passage to realize the control of fluid.Electric regulating valve mainly includes valve body, valve core, valve stem, electric actuator, water inlet channel and water outlet channel are opened in valve body, water passage is formed between water inlet channel and water outlet channel, the opening end of valve core is inserted into the close channel arranged in the inside of valve body, electric actuator is arranged on the upper end of valve body, the connecting end of valve stem is connected with valve core, electric actuator drives valve stem to lift to drive the connecting end of valve core to be tightly on water passage, and water body is blocked, when the connecting end of valve core is tightly on water passage, the opening end of valve core is still in close channel, so that water body can only flow along the inside of valve core to stop flowing after close channel.
[0003] For example Figure 1 The existing electric regulating valve valve core structure developed by our company includes cylinder 1', first channel for water flow is opened on cylinder 1', sealing protrusion is arranged around the end of cylinder 1', and sealing protrusion is located at the end of first channel, sealing groove is formed between sealing protrusion and the upper surface of cylinder 1', sealing ring 3' is arranged in sealing groove, pressing cylinder 2' for pressing sealing ring 3' is arranged on cylinder 1', second channel for water flow channel is opened in pressing cylinder 2', first connecting seat 4' is arranged in first channel, second connecting seat 5' is arranged in second channel, valve stem is arranged through first connecting seat 4' and second connecting seat 5', one end of valve stem is tightly contacted with second connecting seat 5', the other end of valve stem is arranged out of first connecting seat 4' and is locked by nut to connect valve stem, cylinder 1' and pressing cylinder 2' into a whole.Although it can meet the use demand, but there are still the following problems:
[0004] 1, bolt is used to lock valve stem, cylinder and pressing cylinder, when bolt is loose, pressing cylinder cannot press sealing ring well, which leads to sealing problem.Moreover, bolt is locked in the middle of valve stem, so that the effect of pressing sealing ring at the end is not good enough.
[0005] 2, when assembling, in order to lock cylinder and pressing cylinder, first connecting seat and second connecting seat are easy to deform and damage when pre-tightening bolt.
[0006] 3, when using, due to the gap between first connecting seat and second connecting seat, first connecting seat is easy to deform when water hammer impact or pulling valve core.
[0007] To solve the above problems, the utility model is produced. UTILITY MODEL CONTENT
[0008] Therefore, aiming at the above problems, the utility model provides a kind of zero leakage electric regulating valve valve core structure with simple structure, good sealing and long service life.
[0009] To solve the above technical problems, the utility model takes the following solutions: a kind of zero leakage electric regulating valve valve core structure, including cylinder and pressing cylinder, the first passageway for water flow is set on the cylinder, the second passageway for water flow is set in the pressing cylinder, the connecting seat is equipped in the second passageway, the perforation for valve rod is set in the connecting seat, the sealing protrusion is equipped on the cylinder, the sealing groove is equipped between the sealing protrusion and cylinder, the sealing element is equipped in the sealing groove, the pressing cylinder is pressed on the sealing element, and the fixing device that is connected into an organic whole is equipped between the pressing cylinder and cylinder.
[0010] Further improvement is that: the fixing device is that: the connecting pipe is equipped on the bottom of the pressing cylinder, the fixed seat is equipped around in the cylinder, and the connecting pipe outer wall is threadedly connected and is equipped on the fixed seat.
[0011] Further improvement is that: the valve rod is locked on the connecting seat by nut.
[0012] By adopting the foregoing technical scheme, the utility model has the beneficial effects that:
[0013] Simple structure, good sealing and long service life. When using, the pressing cylinder and cylinder are connected into an organic whole by the thread connection of connecting pipe and fixed seat, so that the pressing cylinder can always press the sealing ring, not only the pressing effect is good, but also the sealing ring is loose after the nut on the valve rod is loose, so that the sealing property of connection is guaranteed. Moreover, after the pressing cylinder and cylinder are connected into an organic whole, the stress resistance of the pressing cylinder is improved, so that it can better bear lifting and impact, so that the whole is not easy to be damaged, is conducive to long-term use. Moreover, it is also convenient to assemble and replace and maintain, is conducive to user use. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is the structure diagram of electric regulating valve valve core in the background technology of the utility model embodiment.
[0015] Figure 2 It is the structure diagram of a kind of zero leakage electric regulating valve valve core structure of the utility model embodiment.
[0016] Figure 3 It is the structure diagram of a kind of zero leakage electric regulating valve valve core structure of the utility model embodiment. DETAILED DESCRIPTION
[0017] The utility model is further described in conjunction with drawings and specific embodiment.
[0018] Reference Figures 2-3 The utility model discloses a zero leakage electric regulating valve spool structure, including cylinder 1 and pressing cylinder 2, the first passageway for water flow is set up on cylinder 1, the second passageway 4 for water flow is set up to the pressing cylinder 2, the connecting seat 5 is equipped in the second passageway 4, the perforation 6 for the valve rod to pass through is set up to the connecting seat 5, the sealing protrusion is equipped on cylinder 1, and the sealing groove is equipped between the sealing protrusion and cylinder 1, the sealing ring 3 is equipped in the sealing groove, the pressing cylinder 2 is pressed on the sealing ring 3, the connecting pipe 7 is equipped at the bottom of the pressing cylinder 2, the fixed seat 8 is surrounded and is equipped in the cylinder 1, and the connecting pipe 7 outer wall is screwed on and is connected to be equipped on the fixed seat 8.
[0019] Wherein, when using, the pressing cylinder 2 is connected as a whole with cylinder 1 through the threaded locking connection of connecting pipe 7 and fixed seat 8, so that the pressing cylinder 2 can always press the sealing ring 3, not only makes the pressing effect good, but also will not be loose after the nut on the valve rod is loose, the pressing cylinder 2 is loose, so that the sealing ring 3 is loose, thereby guaranteeing the sealing property of connection. And the pressing cylinder 2 is connected as a whole with cylinder 1, not only improves the stress resistance of the pressing cylinder 2, so that it can better bear lifting and impact, so that the whole is not easy to damage, is favorable for long-term use. And it is also convenient to assemble and replace maintenance, is favorable for user to use.
[0020] When using, the pressing cylinder 2 can be well pressed independently to the sealing ring 3 by the bolt connecting the first connecting seat 5 and the second connecting seat 5, not only makes the effect of the sealing property of pressing better, but also will not appear the nut on the valve rod is loose, the pressing cylinder 2 is loose, and the sealing ring 3 is loose, resulting in leakage problem. At the same time, after the first connecting seat 5 and the second connecting seat 5 are connected as a whole by the bolt, the rigidity of the first connecting seat 5 and the second connecting seat 5 is improved, so that the first connecting seat 5 and the second connecting seat 5 are not easy to deform and damage when being pulled or impacted, which is favorable for long-term use. At the same time, the bolt connection not only facilitates installation, but also is independent from the valve rod, so that it is more convenient and cost-saving to replace and maintain.
[0021] In order to facilitate the connection of the valve rod, the valve rod passes through the perforation 6 and is locked on the connecting seat 5 by the nut.
[0022] The basic principle and main features of the utility model and its advantages are shown and described above, and the skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and descriptions are only to illustrate the principle of the utility model, and various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed, and the scope of protection of the utility model is defined by the appended claims and their equivalents.
Claims
1. A zero-leakage electro-actuated control valve trim structure, characterized by: The utility model relates to a water valve, including cylinder and pressing cylinder, first passageway for water flow is set up on the cylinder, the second passageway for water flow is set up in the pressing cylinder, the second passageway is equipped with connecting seat, the connecting seat is equipped with the perforation for valve rod to pass through, the cylinder is equipped with sealing boss, the sealing boss is equipped with sealing groove between cylinder, the sealing groove is equipped with sealing element, the pressing cylinder is pressed and is located sealing element, and the fixed device that is connected into an organic whole is equipped between pressing cylinder and cylinder.
2. A zero leakage electric regulating valve spool structure according to claim 1, characterized in that: The fixed device is that the connecting pipe is equipped on the bottom of the pressing cylinder, the fixed seat is surrounded and is equipped in the cylinder, and the outer wall of connecting pipe is screwed and is connected and is equipped on the fixed seat.
3. A zero leakage electric regulating valve spool structure according to claim 1, wherein: The valve rod is locked on the connecting seat through the nut.