CN106764014B - Gear overhead adjustable side outlet constant-temperature water mixing valve - Google Patents
Gear overhead adjustable side outlet constant-temperature water mixing valve Download PDFInfo
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- CN106764014B CN106764014B CN201611085579.1A CN201611085579A CN106764014B CN 106764014 B CN106764014 B CN 106764014B CN 201611085579 A CN201611085579 A CN 201611085579A CN 106764014 B CN106764014 B CN 106764014B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/002—Actuating devices; Operating means; Releasing devices actuated by temperature variation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0008—Mechanical means
- F16K37/0016—Mechanical means having a graduated scale
Abstract
The invention relates to the technical field of constant-temperature water mixing valves, in particular to a gear overhead adjustable side outlet constant-temperature water mixing valve, wherein the side wall of a valve body is provided with a hot water inlet and a mixed water outlet, the lower port of the valve body is a cold water inlet, the upper port of the valve body is provided with a valve cover and an adjusting rod which penetrates through the valve cover and extends out of the valve body, the upper side in the valve body is provided with an elastic pressing device, the middle part in the valve body is provided with a bulb with the upper end being propped against the elastic pressing device, the lower side in the valve body is provided with a piston, and a reset spring is arranged between the piston and the lower port of the valve body; the upper end of the valve rod is provided with a check ring, the check ring is provided with a fixing plate and a hand wheel sleeved on the fixing plate, the adjusting rod is fixedly connected with the hand wheel, the fixing plate is provided with at least two gear numbers at intervals, and the end face of the hand wheel is provided with a visual window. The advantages are that: through the built-in structure of visual window and gear digit, solved the problem that the hand wheel goes up and down, make inner structure's stability and sealing performance reinforcing simultaneously, also make the application scope of this product wide.
Description
Technical Field
The invention relates to the technical field of constant-temperature water mixing valves, in particular to a gear overhead adjustable side outlet constant-temperature water mixing valve.
Background
The water mixing valve controls the outlet temperature of the device by controlling the flow of the heat exchanger, the air conditioning unit or other heat and cold devices and the primary heat (cold) medium inlet. When the load changes, the flow is adjusted by changing the opening degree of the valve to eliminate the influence caused by the fluctuation of the load, so that the temperature is recovered to the set value. Under the normal condition, the constant-temperature water mixing valve comprises a valve body, one side of the lower side of the side wall of the valve body is provided with a hot water inlet, the other side of the lower side of the side wall of the valve body is provided with a cold water inlet, the lower port of the valve body is a mixed water outlet, a thermosensitive element, a spring and an adjusting rod are arranged in the valve body, the adjusting rod extends out of the upper port of the valve cover and is fixedly connected with a hand wheel, a plurality of gear numbers are arranged on the outer side wall of the hand wheel, and then indication marks are arranged on corresponding positions on the valve body; meanwhile, due to the structural limitation of the hand wheel lifting water mixing valve, the cold and hot water cutoff function is limited to 38-45 ℃, so that the applicable environment of the water mixing valve is extremely limited.
Disclosure of Invention
In view of the defects in the prior art, the invention aims to provide a gear top-mounted adjustable side-outlet constant-temperature water mixing valve which solves the problem of lifting of a hand wheel through a visual window and a structure with a built-in gear number, enhances the stability and sealing performance of an internal structure, and has a wide application range.
In order to achieve the purpose, the invention provides the following technical scheme:
a gear overhead adjustable side outlet constant-temperature water mixing valve comprises a valve body, wherein a hot water inlet is formed in one side of the lower side of the side wall of the valve body, a mixed water outlet is formed in the other side of the side wall of the valve body, a cold water inlet is formed in the lower port of the valve body, a valve cover is fixedly mounted on the upper port of the valve body, an adjusting rod penetrating through the valve cover and extending out of the valve body is arranged in the upper port of the valve body, an elastic abutting device matched with the adjusting rod is arranged on the upper side in the valve body, a temperature bulb with the upper end abutting against the elastic abutting device is arranged in the middle in the valve body, a piston for controlling the water inflow and the on-off of the hot water inlet and the cold water inlet is arranged on the lower side in the valve body, a reset spring is arranged between the piston and the lower port of the valve body, and the temperature bulb can drive the piston to move downwards and compress the reset spring; the upper end fixed mounting of valve gap has the retaining ring, is equipped with the fixed plate on the last port of retaining ring, and the middle part of fixed plate is equipped with the through hole, and the cover is equipped with the hand wheel on the retaining ring, and the upper end of adjusting the pole passes through the through hole and hand wheel fixed connection, and the interval is equipped with two at least gear numbers on the fixed plate, is equipped with the visual window corresponding with one of them gear number on the terminal surface of hand wheel, and the visual window can correspond one of them corresponding gear number along with the rotation when the hand wheel drives the regulation pole rotation.
The invention is further configured to: the adjusting rod is located the terminal surface in the valve body and goes up to adjusting the pole indent and be equipped with the regulation chamber, is equipped with the internal thread on the inner wall in regulation chamber, and includes the valve rod with adjusting pole complex elasticity mortgage device, and the upper end of valve rod extends to adjust the intracavity, and is equipped with the external screw thread that matches with the internal thread on the upper end of valve rod.
The invention is further configured to: the valve rod is lower extreme open-ended tubular structure, is equipped with spring, ejector pin from top to bottom in the inner chamber of valve rod in proper order, and on the up end of ejector pin was located to the interior top surface, the lower extreme top of valve rod inner chamber were located to the upper end top of spring, the position department that is close to lower port in the inner chamber of valve rod was equipped with annular tang groove, is equipped with the jump ring on the tang groove.
The invention is further configured to: the middle part of temperature package is equipped with annular bellying, and the piston is the tubular structure, has two piece at least support bars along circumference equipartition and interval on the lower port of piston, and fixed mounting has the shutoff board of coaxial with the piston on the support bar, is equipped with two at least support columns along circumference equipartition and interval on the last port of piston, and the up end of support column can push up to on the lower terminal surface of bellying.
The invention is further configured to: the upper port of the piston is outwards necked-in to form a necked-in part, a step is formed between the necked-in part and the upper port of the piston, and the support columns are arranged on the surface of the step.
The invention is further configured to: the lower port of the piston is inwards provided with a necking part, the upper end top of the reset spring is arranged on the upper end top of the flaring part, and the lower end top of the reset spring is arranged on the inner end face of the necking part.
The invention is further configured to: and an annular limiting baffle ring is arranged on the outer side wall of the valve cover and is in contact limiting with the upper port of the valve body.
The invention is further configured to: the upper port of the valve body is outwards provided with a neck expanding part, an annular groove is arranged at the joint of the neck expanding part and the upper port of the valve body, and a stainless steel gasket is arranged on the groove.
The invention is further configured to: the inner wall of the lower port of the valve cover is provided with an annular groove, the outer side wall of the lower end of the adjusting rod is provided with an annular limiting ring, and the limiting ring is embedded in the groove on the valve cover to be fixed.
The invention is further configured to: the lower port of the valve cover is spaced from the stainless steel gasket at a certain interval, the lower port of the adjusting rod is in contact with the upper end face of the stainless steel gasket, and a plastic gasket is arranged between the lower port of the valve cover or between the lower port of the valve cover and the upper end face of the stainless steel gasket.
By adopting the technical scheme, the invention achieves the technical effects that: the utilization is addd the valve gap and is put the structure on top through visual window and gear digit is built-in, the user can see the gear in a plurality of position, the problem that the product installation is restricted by the gear direction has been solved, and simultaneously, adjustment mechanism is built-in, make inner structure compacter, the regulation performance is more stable, the accuracy is higher, and the problem of hand wheel lift when having solved the temperature regulation, it is more obvious to make the effect of adjusting the temperature, make inner structure's stability and sealing performance reinforcing, and this product is to the function improvement of cutting of hot and cold water to 50 ℃ -60 ℃, make the application scope of this product widen.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic sectional structure of the present invention.
Fig. 2 is a schematic diagram of the explosive structure of the present invention.
Fig. 3 is a schematic structural view of the hand wheel of the present invention.
Fig. 4 is a schematic structural diagram of the retainer ring of the present invention.
Detailed Description
Referring to fig. 1 to 4, the gear-top-mounted adjustable side outlet constant-temperature water mixing valve disclosed by the invention comprises a valve body 10, a hot water inlet 11 is formed in one side of the lower side of the side wall of the valve body 10, a mixed water outlet 12 is formed in the other side of the side wall of the valve body 10, a cold water inlet 13 is formed in the lower end of the valve body 10, a valve cover 14 is fixedly installed on the upper end of the valve body 10, an adjusting rod 15 extending out of the valve body 10 through the valve cover 14 is arranged in the upper end of the valve body 10, an elastic abutting device matched with the adjusting rod 15 is arranged on the upper side in the valve body 10, a temperature bulb 28 with the upper end abutting against the elastic abutting device is arranged in the middle in the valve body 10, an adjusting cavity 16 is concavely arranged on the end face of the adjusting rod 15 in the valve body 10, an internal thread is arranged on the inner wall of the adjusting cavity 16, the elastic abutting device matched with the adjusting rod 15 comprises a valve rod 17, the upper end of the valve rod 17 extends into the adjusting cavity 16, and an external thread matched with the internal thread is arranged on the upper end of the valve rod 17.
A piston 18 for controlling the water inflow and the on-off of the hot water inlet 11 and the cold water inlet 13 is arranged at the lower side in the valve body 10, a return spring 19 is arranged between the piston 18 and the lower port of the valve body 10, and the piston 18 can be driven by the bulb 16 to move downwards and compress the return spring 19; the upper end of the valve cover 14 is fixedly provided with a retainer ring 20, the upper port of the retainer ring 20 is provided with a fixing plate 21, the middle part of the fixing plate 21 is provided with a through hole, the retainer ring 20 is sleeved with a hand wheel 22, the upper end of the adjusting rod 15 penetrates through the through hole to be fixedly connected with the hand wheel 22, the fixing plate 21 is provided with at least two gear numbers 23 at intervals, the end surface of the hand wheel 22 is provided with a visual window 24 corresponding to one of the gear numbers 23, and the visual window can correspond to one of the corresponding gear numbers 23 along with the rotation when the hand wheel 22 drives the adjusting rod 15 to rotate. In the aforesaid, when driving the regulation pole through the hand wheel and rotating, because the spiro union relation of the interior external screw thread of regulation pole and valve rod, the regulation pole at this moment is that can not the axis displacement for the valve gap, what only can do is radial rotation, so only the valve rod can the axis displacement, consequently, when adjusting the pole and can not the axis displacement, the hand wheel also can not the axis displacement go up and down admittedly.
In this embodiment, the valve rod 17 is lower extreme open-ended tubular structure, is equipped with spring 40, ejector pin 25 from top to bottom in the inner chamber of valve rod 17 in proper order, and the interior top surface of valve rod 17 inner chamber is located in the top of the upper end of spring 40, on the up end of ejector pin 25 is located in the lower extreme top, and the position department that is close to the lower port in the inner chamber of valve rod 17 is equipped with annular tang groove 26, is equipped with jump ring 27 on tang groove 26. The middle part of bulb 28 is equipped with annular bellying 29, and piston 25 is the tubular structure, has two piece at least support bars 30 along circumference equipartition and interval on the lower port of piston 25, and fixed mounting has the shutoff board 31 of coaxial line with piston 25 on the support bar 30, and the last edge circumference equipartition of the last port of piston 25 is equipped with two at least support columns 32 along the interval, and the up end of support column 32 can push up to on the lower terminal surface of bellying 29. The upper end opening of the piston 25 is flared outwards to form a flared part 33, a step is formed between the flared part 33 and the upper end opening of the piston 25, and the support columns 32 are arranged on the surface of the step. The lower end opening of the piston 25 is provided with a necking part 34 inwards, the upper end of the return spring 19 is arranged on the upper end of the flaring part 33, and the lower end of the return spring is arranged on the inner end face of the necking part 34. The effects of cutting off cold and hot water and controlling the water inflow of the cold and hot water can be well achieved by driving the axial displacement of the piston through the bulb and assisting the reset of the reset spring. The supporting columns and the supporting bars can be used as water passing gaps.
In this embodiment, an annular limit stop ring 35 is arranged on the outer side wall of the valve cover 14, the limit stop ring 35 is in contact with the upper port of the valve body 10 for limiting, an expanded neck portion 36 is arranged at the upper port of the valve body 10, an annular groove is arranged at the joint of the expanded neck portion 36 and the upper port of the valve body 10, and a stainless steel gasket 37 is arranged on the groove. An annular groove is formed in the inner wall of the lower port of the valve cover 14, an annular limiting ring 38 is arranged on the outer side wall of the lower end of the adjusting rod 15, and the limiting ring 38 is embedded in the groove in the valve cover 14 and fixed. The lower port of the valve cover 14 has a certain interval with the stainless steel gasket 37, the lower port of the adjusting rod 15 is in contact with the upper end face of the stainless steel gasket 37, and a plastic gasket 39 is arranged between the lower port of the valve cover 14 or the lower port of the valve cover 14 and the upper end face of the stainless steel gasket 37 as well as the limiting ring 38. The design can further enhance the stability and the sealing performance of the product to a certain extent.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. The utility model provides a side export constant temperature mixes water valve with adjustable gear overhead, includes the valve body, and one side of the lateral wall downside of valve body is equipped with hot water inlet, opposite side and is equipped with the mixed water delivery port, and the lower port of valve body is cold water inlet, its characterized in that: the upper port of the valve body is fixedly provided with a valve cover, the upper port of the valve body is internally provided with an adjusting rod which penetrates through the valve cover and extends out of the valve body, the upper side in the valve body is provided with an elastic pressing device matched with the adjusting rod, the middle part in the valve body is provided with a temperature bulb with the upper end being propped against the elastic pressing device, the lower side in the valve body is provided with a piston for controlling the water inflow and the on-off of a hot water inlet and a cold water inlet, a reset spring is arranged between the piston and the lower port of the valve body, and the temperature bulb can drive the piston to move downwards and compress the reset spring; the upper end of the valve cover is fixedly provided with a check ring, the upper port of the check ring is provided with a fixed plate, the middle part of the fixed plate is provided with a through hole, the check ring is sleeved with a hand wheel, the upper end of the adjusting rod penetrates through the through hole to be fixedly connected with the hand wheel, at least two gear numbers are arranged on the fixed plate at intervals, the end face of the hand wheel is provided with a visual window corresponding to one of the gear numbers, and the visual window can correspond to one of the corresponding gear numbers along with rotation when the hand wheel drives the adjusting rod to rotate.
2. The gear overhead adjustable side-outlet thermostatic mixing valve of claim 1, wherein: the adjusting rod is located the terminal surface in the valve body and goes up to adjusting the pole indent and be equipped with the regulation chamber, is equipped with the internal thread on the inner wall in regulation chamber, and includes the valve rod with adjusting pole complex elasticity mortgage device, and the upper end of valve rod extends to adjust the intracavity, and is equipped with the external screw thread that matches with the internal thread on the upper end of valve rod.
3. The gear overhead adjustable side-outlet thermostatic mixing valve of claim 2, wherein: the valve rod is lower extreme open-ended tubular structure, is equipped with spring, ejector pin from top to bottom in the inner chamber of valve rod in proper order, and on the up end of ejector pin was located to the interior top surface, the lower extreme top of valve rod inner chamber were located to the upper end top of spring, the position department that is close to lower port in the inner chamber of valve rod was equipped with annular tang groove, is equipped with the jump ring on the tang groove.
4. The gear overhead adjustable side-outlet thermostatic mixing valve of claim 1, wherein: the middle part of temperature package is equipped with annular bellying, and the piston is the tubular structure, has two piece at least support bars along circumference equipartition and interval on the lower port of piston, and fixed mounting has the shutoff board of coaxial with the piston on the support bar, is equipped with two at least support columns along circumference equipartition and interval on the last port of piston, and the up end of support column can push up to on the lower terminal surface of bellying.
5. The gear overhead adjustable side-outlet thermostatic mixing valve of claim 4, wherein: the upper port of the piston is outwards necked-in to form a necked-in part, a step is formed between the necked-in part and the upper port of the piston, and the support columns are arranged on the surface of the step.
6. The gear overhead adjustable side-outlet thermostatic mixing valve of claim 4, wherein: the lower port of the piston is inwards provided with a necking part, the upper end top of the reset spring is arranged on the upper end top of the flaring part, and the lower end top of the reset spring is arranged on the inner end face of the necking part.
7. The gear overhead adjustable side-outlet thermostatic mixing valve according to any of claims 1 to 6, wherein: and an annular limiting baffle ring is arranged on the outer side wall of the valve cover and is in contact limiting with the upper port of the valve body.
8. The gear overhead adjustable side-outlet thermostatic mixing valve according to any one of claims 1 to 6, characterized in that: the upper port of the valve body is outwards provided with a neck expanding part, an annular groove is arranged at the joint of the neck expanding part and the upper port of the valve body, and a stainless steel gasket is arranged on the groove.
9. The gear overhead adjustable side-outlet thermostatic mixing valve of claim 8, wherein: the inner wall of the lower port of the valve cover is provided with an annular groove, the outer side wall of the lower end of the adjusting rod is provided with an annular limiting ring, and the limiting ring is embedded in the groove on the valve cover to be fixed.
10. The gear overhead adjustable side-outlet thermostatic mixing valve of claim 9, wherein: the lower port of the valve cover is spaced from the stainless steel gasket at a certain interval, the lower port of the adjusting rod is in contact with the upper end face of the stainless steel gasket, and a plastic gasket is arranged between the lower port of the valve cover or between the lower port of the valve cover and the upper end face of the stainless steel gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611085579.1A CN106764014B (en) | 2016-11-30 | 2016-11-30 | Gear overhead adjustable side outlet constant-temperature water mixing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611085579.1A CN106764014B (en) | 2016-11-30 | 2016-11-30 | Gear overhead adjustable side outlet constant-temperature water mixing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106764014A CN106764014A (en) | 2017-05-31 |
| CN106764014B true CN106764014B (en) | 2022-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611085579.1A Active CN106764014B (en) | 2016-11-30 | 2016-11-30 | Gear overhead adjustable side outlet constant-temperature water mixing valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN106764014B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425307A (en) * | 2019-07-24 | 2019-11-08 | 广东万家乐燃气具有限公司 | A kind of thermostat and water heater |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000042341A1 (en) * | 1999-01-14 | 2000-07-20 | Tour & Andersson Hydronics Ab | Thermal control valve |
| CN101865307A (en) * | 2010-03-04 | 2010-10-20 | 卓旦春 | Self-operated type constant-temperature water mixing valve for floor heating |
| CN101943275A (en) * | 2010-09-08 | 2011-01-12 | 常州市华鹏机械电器制造有限公司 | Automatic constant-temperature water mixing valve |
| CN102062256A (en) * | 2011-01-24 | 2011-05-18 | 卓旦春 | Floor heating thermostatic valve |
| CN202065544U (en) * | 2011-04-29 | 2011-12-07 | 浙江盾安阀门有限公司 | Constant-temperature regulating valve |
| CN202432054U (en) * | 2012-01-12 | 2012-09-12 | 卓旦春 | Static balancing valve |
| CN202901376U (en) * | 2012-10-24 | 2013-04-24 | 永和流体智控股份有限公司 | Constant temperature water mixing valve |
| CN206234454U (en) * | 2016-11-30 | 2017-06-09 | 浙江华龙巨水暖通科技有限公司 | Gear overhead adjustable-side exports constant-temperature water mixing valve |
-
2016
- 2016-11-30 CN CN201611085579.1A patent/CN106764014B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000042341A1 (en) * | 1999-01-14 | 2000-07-20 | Tour & Andersson Hydronics Ab | Thermal control valve |
| CN101865307A (en) * | 2010-03-04 | 2010-10-20 | 卓旦春 | Self-operated type constant-temperature water mixing valve for floor heating |
| CN101943275A (en) * | 2010-09-08 | 2011-01-12 | 常州市华鹏机械电器制造有限公司 | Automatic constant-temperature water mixing valve |
| CN102062256A (en) * | 2011-01-24 | 2011-05-18 | 卓旦春 | Floor heating thermostatic valve |
| CN202065544U (en) * | 2011-04-29 | 2011-12-07 | 浙江盾安阀门有限公司 | Constant-temperature regulating valve |
| CN202432054U (en) * | 2012-01-12 | 2012-09-12 | 卓旦春 | Static balancing valve |
| CN202901376U (en) * | 2012-10-24 | 2013-04-24 | 永和流体智控股份有限公司 | Constant temperature water mixing valve |
| CN206234454U (en) * | 2016-11-30 | 2017-06-09 | 浙江华龙巨水暖通科技有限公司 | Gear overhead adjustable-side exports constant-temperature water mixing valve |
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| CN106764014A (en) | 2017-05-31 |
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Effective date of registration: 20230109 Address after: 317606 industrial cluster, Qinggang Town, Yuhuan City, Taizhou City, Zhejiang Province Patentee after: ZHEJIANG VALOGIN TECHNOLOGY Co.,Ltd. Address before: 317606 Xiaqiu village, Qinggang Town, Yuhuan County, Taizhou City, Zhejiang Province Patentee before: ZHEJIANG HUALONG JUSHUI HVAC TECHNOLOGY CO.,LTD. |