CN214368063U

CN214368063U - Electric balance valve

Info

Publication number: CN214368063U
Application number: CN202023225712.3U
Authority: CN
Inventors: 黄玉; 黄水清; 蔡小飞; 王晓华; 杨荣; 王刚; 徐力; 阮津津
Original assignee: Ningbo Jklong Precision Work Co ltd
Current assignee: Ningbo Jklong Precision Work Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-10-08
Anticipated expiration: 2030-12-28

Abstract

The utility model discloses an electrodynamic balance valve belongs to valving technical field. The method comprises the following steps: a valve body accommodating cavity is arranged in the valve body, and a fluid inlet end and a first groove are respectively arranged at two ends of the valve body accommodating cavity; the valve cover is connected with the valve body, a valve cover accommodating cavity is arranged in the valve cover, a fluid outlet end and a second groove are respectively arranged at two ends of the valve cover accommodating cavity, and the first groove is matched with the second groove; the adjusting mechanism is partially arranged in the valve cover in a penetrating way, and the end part of the driving mechanism, which is far away from the electric mechanism, can slide in the valve cover accommodating cavity in a reciprocating way; the balance mechanism comprises a diaphragm and a guide sleeve which are connected with each other, the diaphragm is arranged between the first groove and the second groove, and the guide sleeve penetrates through the accommodating cavity of the valve body and can slide in the accommodating cavity according to the pressure change of the fluid inlet end. The utility model provides a pair of electrodynamic balance valve makes the flow stability of fluid exit end, and adjusts the precision higher.

Description

Electric balance valve

Technical Field

The utility model relates to a valve gear technical field specifically relates to an electrodynamic balance valve.

Background

Under the large background of global energy crisis and ecological environment protection, building energy conservation is more and more concerned and more emphasized, green low-carbon development is becoming the trend of international development, and resource energy utilization efficiency becomes an important factor for measuring the competitiveness of national manufacturing industry. The key point of building energy conservation is to improve the efficiency of building energy consumption systems, namely the efficiency of cold and heat sources, a transmission and distribution system and end equipment.

At present, the dynamic flow balance valve is gradually applied to carry out hydraulic balance adjustment on a floor supply system in China so as to realize energy conservation and consumption reduction. However, the automatic distribution fluctuation of the flow of each branch is unstable under the change of the system pressure (differential pressure) of the current general dynamic balance valve product, which causes the phenomenon of uneven cooling and heating of the system, the contradiction of large near-end differential pressure and small far-end differential pressure, and the main problems of large resistance of the circulating water quantity of the system, etc. Meanwhile, in the existing dynamic flow balance valve regulated by the electric heating actuator, the electric heating actuator can only realize full opening or full closing, the execution time is long, and the action is slow.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the invention aims to provide the electric balance valve, so that the flow of the fluid outlet end is stable, and the adjusting precision is higher.

The specific technical scheme is as follows:

an electrodynamic balance valve consisting essentially of: valve body, valve gap, adjustment mechanism and balanced mechanism.

A valve body accommodating cavity is arranged in the valve body, and a fluid inlet end and a first groove are respectively arranged at two ends of the valve body accommodating cavity.

The valve cover is connected with the valve body, a valve cover accommodating cavity is arranged in the valve cover, a fluid outlet end and a second groove are respectively arranged at two ends of the valve cover accommodating cavity, and the first groove is matched with the second groove.

The adjusting mechanism part is worn to locate the valve gap, and adjusting mechanism includes electric mechanism, the actuating mechanism who is connected with the electric mechanism drive, and wherein actuating mechanism deviates from electric mechanism's tip can be in valve gap holding intracavity reciprocating sliding to the opening and closing degree in control valve gap holding chamber, and then the regulation fluid inlet pressure.

The balance mechanism comprises a diaphragm and a guide sleeve which are connected with each other, the diaphragm is arranged between the first groove and the second groove, the guide sleeve is arranged in the accommodating cavity of the valve body in a penetrating mode and can slide in the accommodating cavity according to the pressure change of the fluid inlet end, a through hole is formed in the axial direction of the guide sleeve, and the two ends of the through hole are communicated with the accommodating cavity of the valve body and the accommodating cavity of the valve cover respectively.

The electric balance valve is characterized by further comprising a flow guide hole, wherein one end of the flow guide hole is communicated with the fluid outlet end, and the other end of the flow guide hole is communicated with the first groove.

The electrodynamic balance valve is characterized in that the mounting seat is sleeved on the radial outer side of the guide sleeve, an elastic part is arranged between the inner side of the mounting seat and the guide sleeve, one end of the elastic part is in contact with the diaphragm, and the other end of the elastic part is in contact with the mounting seat.

The electric balance valve is characterized in that a sealing seat is further arranged in the valve body, one side of the sealing seat is detachably connected with the inner side of the valve body through a fastening piece, the other side of the sealing seat is in contact with or separated from the guide sleeve, and one side of the sealing seat, which is close to the guide sleeve, is matched with the guide sleeve.

The electrodynamic balance valve is characterized in that the driving mechanism comprises a valve rod and a valve clack, one end of the valve rod is in driving connection with the electrodynamic mechanism, the other end of the valve rod is connected with the valve clack, the valve clack can slide in a reciprocating mode along the length direction of the valve rod, and one end, away from the valve rod, of the valve clack is matched with a cavity channel of the valve cover.

The electric balance valve further has the characteristics that the driving mechanism further comprises a connector and a gland, the connector is connected with the valve cover, the connector is sleeved on the outer sides of the valve rod and the valve clack, the gland is connected with the connector, the gland is sleeved on the outer side of the valve rod, and a baffle ring is further arranged between the gland and the valve rod.

The electric balance valve is characterized in that a plurality of sealing rings are arranged between the valve rod and the gland, and the distance between each sealing ring and the electric mechanism is shorter than the distance between each retaining ring and the electric mechanism.

The electrodynamic balance valve is also characterized in that the edge of the diaphragm is clamped between the valve body and the valve cover.

The positive effects of the technical scheme are as follows:

the utility model provides an electrodynamic balance valve, valve body holding chamber and valve gap holding intracavity are provided with diaphragm and guide pin bushing that can dynamically adjust, when the pressure of the fluid inlet end of valve body produces violent fluctuation, the dynamic adjustment of adjustment mechanism can effectively solve the influence that the fluctuation of because of fluid inlet end pressure causes the fluid outlet end flow, and then has guaranteed the stability of fluid outlet end flow; meanwhile, an electric mechanism is matched with the valve rod to drive the adjusting and driving mechanism, so that the arbitrary opening adjustment of the cavity channel in the valve cover accommodating cavity can be realized, and the control and adjustment precision is higher.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of an electrodynamic balance valve according to the present invention;

fig. 2 is a valve stem structure diagram of an embodiment of an electrodynamic balance valve of the present invention;

fig. 3 is a valve clack structure diagram in an embodiment of an electrodynamic balance valve of the present invention;

fig. 4 is a structure diagram of a gland in an embodiment of an electrodynamic balance valve of the present invention;

fig. 5 is a structure diagram of a joint in an embodiment of an electrodynamic balance valve according to the present invention.

In the drawings: 1. a valve body; 11. a valve body accommodating cavity; 12. a fluid inlet end; 13. a first groove; 14. an inner connecting hole; 15. a sealing seat; 16. a screw; 2. a valve cover; 21. a valve cover accommodating cavity; 22. a fluid outlet port; 23. a second groove; 24. a joint fixing interface; 3. an adjustment mechanism; 31. an electric mechanism; 32. a drive mechanism; 321. a valve flap; 322. a joint; 323. a gland; 324. a baffle ring; 4. a balancing mechanism; 41. a guide sleeve; 42. a membrane; 43. a mounting seat; 44. an elastic member; 5. a flow guide hole; 6. a valve stem; 61. and (5) sealing rings.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the following embodiments are specifically illustrated in conjunction with fig. 1 to 5.

The numbering of the components themselves, such as "first", "second", etc., is used herein only to distinguish between the objects depicted and not to have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the electric balance valve, a valve body accommodating cavity 11 is arranged in a valve body 1, and a fluid inlet end 12 and a first groove 13 are respectively arranged at two ends of the valve body accommodating cavity 11. The valve body accommodating cavity 11 is mainly used for installing the balance mechanism 4 and the mechanism matched with the balance mechanism 4, two ends of the valve body accommodating cavity 11 do not necessarily refer to two opposite ends of the valve body accommodating cavity, the valve body 1 can be irregular, two ends of the valve body 1 can also be adjacent sides of the valve body 1, and adaptability setting can be carried out according to actual conditions.

The valve cover 2 is connected with the valve body 1, a valve cover accommodating cavity 21 is arranged in the valve cover 2, two ends of the valve cover accommodating cavity 21 are respectively provided with a fluid outlet end 22 and a second groove 23, the first groove 13 is matched with the second groove 23, the valve cover accommodating cavity 21 is mainly used for installing an adjusting mechanism 3 and a mechanism matched with the adjusting mechanism 3, two ends of the valve cover accommodating cavity 21 do not necessarily refer to two opposite ends of the valve cover accommodating cavity, the valve cover 2 can be set to be irregular, two ends of the valve cover 2 can also be adjacent sides of the valve cover 2, adaptability adjustment can be carried out according to actual conditions, the second groove 23 is buckled with the first groove 13, a formed assembly space is used for installing the diaphragm 42, and certain intervals are reserved between two sides of the diaphragm 42 and the bottoms of the first groove 13 and the second groove 23 so that the diaphragm 42 can generate deformation reserved spaces.

The adjusting mechanism 3 partially penetrates through the valve cap 2, and the adjusting mechanism 3 comprises an electric mechanism 31 and a driving mechanism 32 in driving connection with the electric mechanism 31, the electric mechanism 31 generally outputs a rotating torque, the driving mechanism 32 converts the rotating torque into a linear displacement, wherein the end part of the driving mechanism 32 departing from the electric mechanism 31 can slide in the valve cap accommodating cavity 21 in a reciprocating manner, specifically, the driving mechanism 32 is arranged in a flow channel between the fluid outlet end 22 and the second groove 23, and the driving mechanism 32 can stretch into the flow channel in different degrees so as to control the opening and closing degree of the valve cap accommodating cavity 21, thereby adjusting the inlet pressure of the fluid.

Balance mechanism 4 includes interconnect's diaphragm 42 and guide pin bushing 41, diaphragm 42 sets up between first recess 13 and second recess 23, pressure change through diaphragm 42 width direction both sides makes diaphragm 42 produce deformation, thereby drive guide pin bushing 41 and remove, guide pin bushing 41 wears to locate in valve body holding chamber 11, and can slide at the holding intracavity according to the pressure change of fluid entrance point 12, and then carry out automatic adjustment, and the axial of guide pin bushing 41 has seted up the through-hole, the both ends of through-hole communicate with valve body holding chamber 11, valve gap holding chamber 21 respectively. Fluid entering the fluid inlet end 12 can flow through the through holes of the guide sleeve 41 to the fluid outlet end 22.

In a preferred embodiment, as shown in fig. 1, the fluid guiding device further includes a fluid guiding hole 5, one end of the fluid guiding hole 5 is communicated with the fluid outlet 22, and the other end is communicated with the first groove 13, the fluid guiding hole 5 is configured to, when the flow rate of the fluid inlet end 12 is suddenly increased, in order to ensure the stability of the flow rate of the fluid outlet end 22, a part of the fluid can flow back from the valve cover accommodating cavity 21 to the valve body accommodating cavity 11 through the fluid guiding hole, thereby ensuring the flow rate stability of the fluid outlet end 22.

In a preferred embodiment, as shown in fig. 1, a mounting seat 43 is sleeved on the radial outer side of the guide sleeve 41, and an elastic member 44 is further disposed between the inner side of the mounting seat 43 and the guide sleeve 41, one end of the elastic member 44 is in contact with the diaphragm 42, and the other end is in contact with the mounting seat 43, and the spring is used for resetting the position during the sliding process of the guide sleeve 41.

In a preferred embodiment, as shown in fig. 1 and 2, a sealing seat 15 is further disposed in the valve body 1, one side of the sealing seat 15 is detachably connected to the inside of the valve body 1 by a fastening member, an inner connection hole 14 is disposed at a position of the valve body 1 corresponding to the guide sleeve 41, the sealing seat 15 is connected to the inner connection hole 14 by a screw 16, the other side of the sealing seat 15 can be in contact with or separated from the guide sleeve 41, after the sealing seat 15 is fastened to the guide sleeve 41, the fluid entering the fluid inlet end 12 cannot enter the through hole in the guide sleeve 41, after the sealing seat 15 is separated from the guide sleeve 41, the fluid entering the fluid inlet end 12 can flow to the fluid outlet end 22 through the through hole in the guide sleeve 41, and one side of the sealing seat 15 close to the guide sleeve 41 is matched to the guide sleeve 41, so as to ensure the tightness of the guide sleeve 41 after the sealing seat 15 is fastened to the guide sleeve 41.

In a preferred embodiment, as shown in fig. 1, 2, and 3, the driving mechanism 32 includes a valve rod 6 and a valve flap 321, one end of the valve rod 6 is drivingly connected to the electric mechanism 31, and the other end of the valve rod 6 is connected to the valve flap 321, specifically, the valve rod 6 is in a threaded connection with the valve flap 321, the electric mechanism 31 may employ a rotating motor, and the like, and the valve rod 6 is rotated by the electric mechanism 31, the valve flap 321 can slide back and forth along the length direction of the valve rod 6, the valve flap 321 is driven to slide along its own length direction by the rotation of the valve rod 6, and one end of the valve flap 321 departing from the valve rod 6 is matched with the channel of the valve cap 2, and the opening and closing degree of the valve cap accommodating cavity 21 is controlled by whether the valve flap 321 extends into and the distance from the end of the channel, so as to adjust the liquid inlet pressure at the inlet end of the fluid.

In a preferred embodiment, as shown in fig. 1, 4 and 5, the driving mechanism 32 further includes a joint 322 and a gland 323, the joint 322 is connected to the valve cap 2, the joint 322 is sleeved outside the valve stem 6 and the valve flap 321, one end of the joint 322 facing away from the electric mechanism 31 is provided with a joint 322 fixing interface 24, the joint 322 fixing interface 24 is used for defining the movable position of the valve flap 321, and the specific joint 322 and the valve cap 2 are in a threaded connection form, and surround a part of the valve stem 6 and the valve flap 321 to serve as a guide and a limit of the valve flap 321.

The gland 323 is connected with the joint 322, the gland 323 is sleeved outside the valve rod 6, the gland 323 and the joint 322 are in threaded connection, a part of the valve rod 6 is surrounded and used for guiding and limiting the valve rod 6, a baffle ring 324 is further arranged between the gland 323 and the valve rod 6, the baffle ring 324 is in threaded connection with the inner side of the gland 323, the baffle ring 324 is clamped with the valve rod 6, the valve rod 6 is limited to move along the length direction of the valve rod 6, and the valve rod 6 can only rotate around the axis direction of the valve rod 6.

In a preferred embodiment, as shown in fig. 1 and 2, a plurality of sealing rings 61 are further disposed between the valve stem 6 and the gland 323 to ensure the sealing performance between the valve stem 6 and the valve cap 2 and prevent the fluid passing through the balance valve from leaking out of the gap between the valve stem 6 and the valve cap 2, and the distance between the sealing ring 61 and the electric mechanism 31 is shorter than the distance between the stop ring 324 and the electric mechanism 31, i.e. the sealing ring 61 is located outside the stop ring 324, and the sealing ring 61 is closer to the electric mechanism 31 than the stop ring 324.

In a preferred embodiment, as shown in fig. 1, the edge of the diaphragm 42 is clamped between the valve body 1 and the bonnet 2, a position for clamping is reserved on the edge of the specific diaphragm 42, that is, the overall dimension of the diaphragm 42 is greater than the dimension of the area enclosed by the first groove 13 and the second groove 23, and smaller mounting grooves are further opened on the edge positions of the first groove 13 and the second groove 23, and the edge position of the diaphragm 42 can be embedded in the mounting grooves, so that the mounting and positioning of the diaphragm 42 are facilitated.

The working principle of the electrodynamic balance valve is as follows: indoor temperature can be set according to actual need, the rotation of drive valve rod is come through electric mechanism, realizes that the valve clack opens certain distance in the chamber of valve gap says, realizes tentatively setting for. According to the environmental influence, flow regulation needs to be carried out through a balance valve, and finally constant temperature is achieved. The specific adjustment process of the balance valve is as follows:

when the pressure at the fluid inlet end is stable, the overall stress state inside the balance valve is as follows: the pressure at the fluid inlet end is equal to the internal flow resistance, the overcome spring force, the return force of the diversion hole and the pressure at the fluid outlet end. In fig. 1, the component of the inlet pressure is obliquely above the diaphragm, the sum of the spring force and the return pressure of the diversion hole is obliquely below the diaphragm, and the forces above and below the diaphragm are in a balanced state.

When the pressure at the fluid inlet end fluctuates (after the pressure is supposed to be increased), the balance between the upper part and the lower part of the diaphragm is destroyed, the pressure above the diaphragm is suddenly increased, the pressure above the diaphragm is larger than the pressure below the diaphragm, the spring (elastic part) is compressed immediately, then the guide sleeve moves downwards along with the compression of the spring (elastic part), and after the guide sleeve moves downwards, the guide sleeve is close to the sealing seat, so that the opening degree of the fluid inlet end is reduced, and the pressure at the inlet is reduced by a part. However, in order to ensure that the flow rate at the fluid outlet end remains unchanged, a part of suddenly increased pressure also flows back to the lower side of the diaphragm through the diversion hole, namely flows back to the valve body accommodating cavity from the valve cover accommodating cavity, on one hand, the flow rate at the fluid outlet end is not suddenly increased, on the other hand, the suddenly increased pressure above the diaphragm can be used for counteracting the pressure, the compression amount of a part of springs (elastic components) is reduced, the pressure at the fluid inlet end is not suddenly reduced (if the guide sleeve is too much reduced, the opening degree is too much reduced, the flow rate at the fluid outlet end is greatly reduced), so that the whole stress reaches the previous balance state again, and the flow rate at the fluid outlet end of the balance valve can also remain relatively stable.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above is only a preferred embodiment of the present invention, and not intended to limit the scope of the invention, and it should be appreciated by those skilled in the art that various equivalent substitutions and obvious changes made in the specification and drawings should be included within the scope of the present invention.

Claims

1. An electrodynamic balance valve, comprising:

the valve comprises a valve body, wherein a valve body accommodating cavity is arranged in the valve body, and a fluid inlet end and a first groove are respectively arranged at two ends of the valve body accommodating cavity;

the valve cover is connected with the valve body, a valve cover accommodating cavity is arranged in the valve cover, a fluid outlet end and a second groove are respectively arranged at two ends of the valve cover accommodating cavity, and the first groove is matched with the second groove;

the adjusting mechanism is partially arranged in the valve cover in a penetrating mode and comprises an electric mechanism and a driving mechanism in driving connection with the electric mechanism, and the end, away from the electric mechanism, of the driving mechanism can slide in a reciprocating mode in the valve cover accommodating cavity;

the balance mechanism comprises a diaphragm and a guide sleeve which are connected with each other, the diaphragm is arranged between the first groove and the second groove, the guide sleeve penetrates through the valve body accommodating cavity and can slide in the accommodating cavity according to the pressure change of the fluid inlet end, a through hole is formed in the guide sleeve in the axial direction, and two ends of the through hole are respectively communicated with the valve body accommodating cavity and the valve cover accommodating cavity.

2. The electrodynamic balance valve of claim 1, further comprising a pilot bore having one end in communication with the fluid outlet port and another end in communication with the first recess.

3. The electrodynamic balance valve of claim 1, wherein a mounting seat is sleeved on a radially outer side of the guide sleeve, and an elastic member is further disposed between an inner side of the mounting seat and the guide sleeve, one end of the elastic member is in contact with the diaphragm, and the other end of the elastic member is in contact with the mounting seat.

4. The electrodynamic balance valve of claim 1, wherein a sealing seat is further disposed in the valve body, one side of the sealing seat is detachably connected to the inner side of the valve body through a fastening member, the other side of the sealing seat is in contact with or separated from the guide sleeve, and one side of the sealing seat close to the guide sleeve is matched with the guide sleeve.

5. The electrodynamic balance valve of claim 1, wherein the drive mechanism includes a valve stem and a valve flap, one end of the valve stem is drivingly connected to the electrodynamic mechanism, the other end of the valve stem is connected to the valve flap, the valve flap is reciprocally slidable along the length of the valve stem, and an end of the valve flap facing away from the valve stem is matched with the channel of the valve cover.

6. The electrodynamic balance valve of claim 5, wherein the drive mechanism further comprises a joint and a gland, the joint is connected with the valve cover, the joint is sleeved on the outer sides of the valve rod and the valve clack, the gland is connected with the joint, the gland is sleeved on the outer side of the valve rod, and a baffle ring is further disposed between the gland and the valve rod.

7. An electrodynamic balance valve according to claim 6 wherein a plurality of sealing rings are provided between the valve stem and the gland, and the distance between the sealing rings and the electric mechanism is shorter than the distance between the retainer ring and the electric mechanism.

8. An electrodynamic balance valve according to claim 1, characterised in that the edge of the diaphragm is sandwiched between the valve body and the bonnet.