CN211398620U

CN211398620U - Temperature control valve

Info

Publication number: CN211398620U
Application number: CN201921981889.0U
Authority: CN
Inventors: 毛益民; 汤冬冬; 俞冠正
Original assignee: Zhejiang Deai Intelligent Control Technology Co Ltd
Current assignee: Zhejiang Deai Intelligent Control Technology Co Ltd
Priority date: 2019-11-15
Filing date: 2019-11-15
Publication date: 2020-09-01
Anticipated expiration: 2029-11-15

Abstract

The utility model relates to a heating ventilation air conditioner field especially relates to temperature-sensing valve. A temperature control valve comprises a valve body, a valve cover and a valve core assembly, wherein the valve cover is arranged on the valve body, one end of the valve core assembly is arranged in the valve cover, and the other end of the valve core assembly extends into the valve body; the valve core assembly comprises a valve rod, the valve rod can rotate relative to the valve cover and/or the valve body, a positioning part is arranged on the valve rod, a limiting groove is formed in the inner wall of the valve cover, the valve rod extends into the valve cover, the positioning part is clamped into the limiting groove, and the valve rod is positioned and limited to move along the axis direction of the valve cover. The utility model has the advantages that: the valve rod is matched with the valve cover in structure, so that the valve rod is positioned, and the assembly efficiency is improved.

Description

Temperature control valve

Technical Field

The utility model relates to a heating ventilation air conditioner field especially relates to temperature-sensing valve.

Background

The heating ventilation air-conditioning system is used for controlling the indoor temperature of a building, a temperature control valve is often arranged at the tail end to control the opening and closing of a pipeline, and the temperature control valve can set the room temperature according to different users so as to achieve the temperature comfortable for the users.

In the prior art, the split retainer ring is used for realizing positioning in the valve rod assembling process of the temperature control valve, and the split retainer ring is difficult to grab due to small volume, so that the assembling rate is low.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model provides a temperature control valve to above-mentioned technical problem, technical scheme as follows:

a temperature control valve comprises a valve body, a valve cover and a valve core assembly, wherein the valve cover is arranged on the valve body, one end of the valve core assembly is arranged in the valve cover, and the other end of the valve core assembly extends into the valve body; the valve core assembly comprises a valve rod, the valve rod can rotate relative to the valve cover and/or the valve body, a positioning part is arranged on the valve rod, a limiting groove is formed in the inner wall of the valve cover, the valve rod extends into the valve cover, the positioning part is clamped into the limiting groove, and the valve rod is positioned and limited to move along the axis direction of the valve cover.

It can be understood that the valve rod is positioned by adopting the matching of the valve rod and the valve cover, and the assembly efficiency is improved.

In one embodiment, a first groove is formed in the circumferential direction of the valve rod close to the positioning piece, so that the positioning piece can be elastically deformed and clamped into the limiting groove.

It can be understood that first recess can make the setting element take place elastic deformation in the effect of external force, blocks into aslope the spacing inslot to prevent the valve rod is followed temperature control valve's axial motion, the valve rod can only carry out rotary motion, fixes a position with this the valve rod.

In one embodiment, the positioning member and the valve rod are integrally formed.

In one embodiment, one end of the valve cover, which is far away from the valve body, is provided with a first cavity with an opening, one end of the valve rod extends into the first cavity, and a sealing filler is filled between the inner wall of the first cavity and the valve rod so as to seal the valve rod and the valve cover.

It will be appreciated that a packing seal is employed to prevent other seals from failing during prolonged operation, resulting in leakage from the temperature control valve.

In one embodiment, the thermostatic valve further comprises a gland cover, and the gland cover is arranged at an opening at one end of the valve cover, which is far away from the valve body, and is used for compressing the sealing packing.

It will be appreciated that the gland is capable of compressing the packing seal to enhance the sealing of the packing seal.

In one embodiment, one end of the valve cover close to the valve body is provided with a second cavity arranged in an opening mode, the second cavity is communicated with the first cavity, and one end of the valve rod extends into the second cavity from the first cavity and is arranged between the valve cover and the inner wall of the second cavity in a sealing mode.

It will be appreciated that the valve stem seals against the inner wall of the second chamber, further preventing leakage of the temperature controlled valve.

In one embodiment, the valve core assembly further comprises a valve flap, the valve flap is connected with the valve rod, and the valve rod rotates to drive the valve flap to move along the axis direction of the temperature control valve.

It is understood that the flap is moved in the axial direction of the thermostat valve in order to open, regulate the flow rate or close the thermostat valve.

In one embodiment, one end of the valve rod close to the valve clack is provided with T-shaped threads, and the valve rod is in threaded connection with the valve clack.

It will be appreciated that the valve stem is threadably connected to the valve flap, and the valve flap is circumferentially restrained by the internal cavity of the bonnet, such that the valve flap moves axially with rotation of the valve stem.

In one embodiment, the valve body is provided with an inlet and an outlet, the inlet and/or the outlet are/is provided with a joint component, and the valve clack can cover the inlet or the outlet so as to communicate or separate the inlet and the outlet.

In one embodiment, the thermostatic valve further comprises a driving assembly, wherein the driving assembly is arranged at one end of the valve cover far away from the valve body and is connected with the valve rod so as to drive the valve rod to rotate relative to the valve cover and/or the valve body.

It will be appreciated that a drive assembly is used to drive movement of the valve core assembly.

Compared with the prior art, the utility model provides a pair of temperature-sensing valve set up the setting element on the valve rod the spacing groove has been seted up on the valve gap inner wall, through the setting element with the cooperation of spacing groove is in order to fix a position the valve rod avoids using external element to realize the location, can utilize the assembly of automatic assembly machine, improves assembly efficiency.

Drawings

Fig. 1 is a schematic structural view of a temperature control valve provided by the present invention;

fig. 2 is a first schematic structural diagram of a valve core assembly of a temperature control valve provided by the present invention;

fig. 3 is a second schematic structural view of the valve core assembly of the temperature control valve provided by the present invention;

fig. 4 is a partially enlarged view of a portion a in fig. 3.

The symbols in the drawings represent the following meanings:

100. a temperature control valve; 10. a valve body; 11. a joint assembly; 20. a valve cover; 21. a limiting groove; 211. a second groove; 22. sealing and filling; 23. a first chamber; 24. a second chamber; 30. a valve core assembly; 31. a valve stem; 311. a positioning member; 312. a sealing groove; 313. a seal member; 314. connecting holes; 315. a first groove; 32. a valve flap; 40. a gland; 50. a drive assembly.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, the present invention provides a thermostat valve 100 for controlling the indoor temperature of a building in a heating, ventilating and air conditioning system, for example, in a heating system, the thermostat valve 100 is installed on a radiator of a house, and the thermostat valve 100 adjusts the temperature by adjusting the water flow. In other embodiments, the thermostatic valve 100 may also be used in a floor heating system, and the thermostatic valve 100 is installed at the front end of the manifold to control the on-off and flow rate of the medium in the pipeline, and simultaneously, the room temperature is controlled by combining with the room temperature controller. In this embodiment, the medium flowing through the thermostatic valve 100 is water, but in other embodiments, the medium in the thermostatic valve 100 may be other media.

Specifically, referring to fig. 1, the thermostatic valve 100 includes a valve body 10, a valve cover 20 and a valve core assembly 30, the valve cover 20 is mounted on the valve body 10, one end of the valve core assembly 30 is disposed in the valve cover 20, and the other end of the valve core assembly extends into the valve body 10, and the valve core assembly 30 is used for controlling the opening and closing of the thermostatic valve 100 and regulating the flow rate of the thermostatic valve 100.

Further, the valve body 10 is provided with an inlet (not shown) and an outlet (not shown) for the inflow and outflow of the medium.

Preferably, the inlet and the outlet are provided with joint assemblies 11 to realize quick movable installation with the pipeline, and convenient installation or disassembly.

With continued reference to fig. 1, the end of the valve cover 20 away from the valve body 10 has a first chamber 23, an end of the first chamber 23 is open, and an end of the valve rod 31 extends into the first chamber 23.

The inner wall of the first chamber 23 and the valve rod 31 can be filled with the sealing packing 22, so that the valve rod 31 and the valve cover 20 are sealed. In this embodiment, polytetrafluoroethylene is used for packing, but in other embodiments, other materials capable of sealing may be used for packing.

Further, the valve cover 20 is internally provided with a second chamber 24 with an opening, the second chamber 24 is communicated with the first chamber 23, one end of the valve rod 31 extends into the second chamber 24 from the first chamber 23, and the valve rod 31 is hermetically arranged between the inner wall of the second chamber 24.

A sealing groove 312 is formed in the circumferential direction of the sidewall of the valve rod 31, a sealing element 313 is arranged in the sealing groove 312, and the sealing element 313 abuts against the sidewall of the second chamber, so that the valve rod 31 and the bonnet 20 are connected in a sealing manner. In this embodiment, the sealing member 313 is an O-ring, however, in other embodiments, the sealing member 313 may be another sealing member 313 capable of sealing, or another sealing manner may be adopted between the valve rod 31 and the inner wall of the second chamber.

It will be appreciated that the seal 313 provides a double seal with the seal packing 22 to prevent the seal packing 22 from sealing against leakage out of the thermostatic valve 100 in the event of failure of the seal 313 during prolonged operation.

Referring to fig. 2 and 3, the valve core assembly 30 includes a valve rod 31, the valve rod 31 can rotate relative to the valve cover 20 or the valve body 10, a positioning member 311 is disposed on the valve rod 31, a limiting groove 21 is disposed in the valve cover 20, the positioning member 311 is clamped in the limiting groove 21 to position the valve rod 31 and limit the axial movement of the valve rod 31, the valve rod 31 and the valve cover 20 are configured to position the valve rod 31, and an external element is not used to realize the positioning.

Specifically, a first groove 315 is formed in the circumferential direction of the valve rod 31 near the positioning member 311, so that the positioning member 311 forms an elastic positioning member 311, a second groove 211 is formed in the circumferential direction of the inner wall of the bonnet 20, so as to form a limiting groove 21, when the valve rod 31 is installed in the bonnet 20, the valve rod 31 is pressed by a force, the positioning member 311 is deformed by the force of the first groove 315, and is inserted into the limiting groove 21 in an inclined manner, see fig. 4, so as to position the valve rod 31 and limit the movement of the valve rod 31 along the axial direction of the thermostatic valve 100.

Preferably, in this embodiment, the side wall of the limiting groove 21 is a plane, and the positioning element 311 obliquely extends into the limiting groove 21 along the plane, and in other embodiments, the side wall of the limiting groove 21 may also be an inclined surface.

In the present embodiment, the positioning member 311 and the valve rod 31 are integrally formed, but in other embodiments, the positioning member 311 and the valve rod 31 may also be separately formed.

Further, the valve core assembly 30 further includes a valve flap 32, the valve flap 32 is connected to the valve rod 31, and the valve rod 31 rotates to drive the valve flap 32 to move along the axial direction of the temperature control valve 100.

Specifically, one end of the valve rod 31 close to the valve flap 32 is provided with a T-shaped thread, the valve flap 32 is in threaded connection with the valve rod 31, the valve flap 32 is limited by the inner cavity of the bonnet 20 and cannot rotate, and therefore the valve rod 31 rotates to drive the valve flap 32 to move along the axial direction of the temperature control valve 100 so as to control the medium flux between the inlet and the outlet. In the present embodiment, the valve flap 32 is hexagonal prism, however, in other embodiments, the valve flap 32 may also be quadrangular prism or other shapes.

Preferably, one end of the valve flap 32, which is far away from the valve cover 20, is in a tapered structure, the cross-sectional area of the tapered structure gradually decreases from the end close to the valve cover 20 to the end far away from the valve cover 20, and in the moving process of the valve flap 32, the tapered structure changes the opening degree of the thermostatic valve 100 along with the movement of the valve flap 32, so as to change the flow area, and the tapered structure can block the inlet or the outlet, so as to close the thermostatic valve 100.

The temperature control valve 100 further comprises a gland 40, the gland 40 is covered on an opening of one end of the valve cover 20 far away from the valve body 10, and the gland 40 compresses the sealing packing 22 to further enhance the sealing performance of the sealing packing 22.

Referring to fig. 1, the thermostatic valve 100 further includes a driving assembly 50, wherein the driving assembly 50 is disposed at an end of the valve cover 20 away from the valve body 10 and is connected to the valve stem 31 to drive the valve stem 31 to rotate relative to the valve cover 20 and/or the valve body 10.

In this embodiment, one end of the valve rod 31 far away from the valve body 10 is opened with a connecting hole 314, that is, the top of the valve rod 31 is opened with a connecting hole 314, an internal thread is provided in the connecting hole 314, and the driving assembly 50 is movably connected with the valve rod 31 through the connecting hole 314. In other embodiments, the driving assembly 50 may be connected to the valve stem 31 by a snap fit or other means. The drive assembly 50 may be an adjusting handwheel or other drive assembly 50.

When the sealing packing 22 fails, the temperature control valve 100 needs to be repaired, and only the driving assembly 50 and the gland 40 need to be removed, and the sealing packing 22 needs to be replaced, so that the maintenance is convenient.

In an automatic assembly line, the valve rod 31 is inserted into the bonnet 20, and a specific tool is used to apply force to the valve rod 31 so that the positioning member 311 is deformed by the force and is obliquely inserted into the stopper groove 21, and the valve rod 31 rotates in the bonnet 20 but cannot move axially. During the operation of the thermostatic valve 100, the driving assembly 50 controls the valve rod 31 to rotate according to the room temperature requirement, and the valve rod 31 drives the valve flap 32 to move along the axial direction of the thermostatic valve 100, so as to adjust the medium flux between the inlet and the outlet. When the medium flows into the second chamber 24 of the valve cover 20, the sealing function of the sealing element 313 can prevent the medium from flowing into the first chamber 23 from the second chamber 24, the sealing packing 22 can prevent the medium from flowing out of the first chamber 23, so that the thermostatic valve 100 leaks, and the sealing packing 22 can perform compensation sealing after the sealing element 313 fails.

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

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A temperature control valve comprises a valve body (10), a valve cover (20) and a valve core assembly (30), wherein the valve cover (20) is arranged on the valve body (10), one end of the valve core assembly (30) is arranged in the valve cover (20), and the other end of the valve core assembly (30) extends into the valve body (10);

the valve core assembly (30) comprises a valve rod (31), the valve rod (31) can rotate relative to the valve cover (20) and/or the valve body (10), a positioning part (311) is arranged on the valve rod (31), a limiting groove (21) is formed in the inner wall of the valve cover (20), the valve rod (31) extends into the valve cover (20), and the positioning part (311) is clamped into the limiting groove (21) to limit the valve rod (31) to move along the axis direction of the valve cover (20).

2. The thermostat valve as claimed in claim 1, characterized in that a first recess (315) is provided in the circumferential direction of the valve rod (31) close to the positioning element (311) so that the positioning element (311) can be elastically deformed and snapped into the limiting groove (21).

3. Thermostatted valve as claimed in claim 1, characterized in that the positioning element (311) is formed integrally with the valve stem (31).

4. Thermostatted valve as claimed in claim 1, characterized in that the end of the bonnet (20) remote from the valve body (10) has a first chamber (23) provided with an opening, the end of the stem (31) projects into the first chamber (23), and a sealing packing (22) is filled between the inner wall of the first chamber (23) and the stem (31) to seal the stem (31) and the bonnet (20).

5. Thermostatic valve according to claim 4, characterized in that it further comprises a gland (40), said gland (40) covering the opening at the end of said valve cover (20) remote from said valve body (10) for compressing said sealing packing (22).

6. Thermostatted valve as claimed in claim 5, characterized in that the end of the cover (20) close to the valve body (10) has a second chamber (24) which is open, the second chamber (24) communicating with the first chamber (23), and in that an end of the stem (31) protrudes from the first chamber (23) into the second chamber (24) and is sealingly arranged against the inner wall of the second chamber (24).

7. The thermostat valve as claimed in claim 1, characterized in that the spool assembly (30) further comprises a valve flap (32), the valve flap (32) is connected with the valve rod (31), and the valve rod (31) rotates to move the valve flap (32) along the axis direction of the thermostat valve.

8. Thermostatted valve as claimed in claim 7, characterized in that the end of the stem (31) close to the flap (32) is provided with a "T" thread, the stem (31) being screwed to the flap (32).

9. The thermostat valve as claimed in claim 7, characterized in that the valve body (10) is provided with an inlet and an outlet, the inlet and/or the outlet are provided with a joint assembly (11), and the valve flap (32) can block the inlet or the outlet to connect or block the inlet and the outlet.

10. Thermostatted valve as claimed in claim 1, characterized in that it also comprises a drive assembly (50), the drive assembly (50) being arranged at the end of the bonnet (20) remote from the valve body (10) and being connected to the stem (31) in order to drive the stem (31) in rotation with respect to the bonnet (20) and/or the valve body (10).