CN106838372B - Hanging stove board trades outlet valve - Google Patents
Hanging stove board trades outlet valve Download PDFInfo
- Publication number
- CN106838372B CN106838372B CN201710089861.5A CN201710089861A CN106838372B CN 106838372 B CN106838372 B CN 106838372B CN 201710089861 A CN201710089861 A CN 201710089861A CN 106838372 B CN106838372 B CN 106838372B
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- Prior art keywords
- valve
- valve core
- cavity
- motor
- spring
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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
- F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
- F16K11/044—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with movable valve members positioned between valve seats
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/44—Details of seats or valve members of double-seat valves
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
- F16K1/465—Attachment of sealing rings to the valve seats
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0263—Construction of housing; Use of materials therefor of lift valves multiple way valves
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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
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multiple-Way Valves (AREA)
- Sliding Valves (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention discloses a wall-mounted boiler plate water changing valve which comprises a valve body and a motor, wherein the valve body is provided with a valve cavity, the motor is arranged on the valve body, the middle of the valve body is provided with a water inlet communicated with the middle of the valve cavity, the lower part of the valve body is provided with a first water outlet communicated with the valve cavity, the upper part of the valve body is provided with a motor seat communicated with the valve cavity and used for installing the motor, and a second water outlet communicated with the valve cavity, a valve core is arranged in the valve cavity, the valve core is connected with the motor through a valve rod, the valve core is provided with a valve core cavity communicated with the water inlet, the lower part of the valve core is provided with a lower opening used for communicating the first water outlet with the valve core cavity when the valve core slides upwards to a set position, and the upper part of the valve core is provided with an upper opening used for communicating the second water outlet with the valve core cavity when the valve core slides downwards to a lower set position. The invention has compact structure, convenient installation and obviously reduced overall height.
Description
Technical Field
The invention relates to a valve, in particular to a water outlet valve.
Background
The existing wall-mounted boiler plate water changing valve is not compact in structure, high in valve body height, high in cost due to the adoption of split type assembly, and inconvenient due to the fact that a plurality of parts need to be disassembled during installation and maintenance.
Disclosure of Invention
The invention aims to solve the technical problem of providing a wall-mounted boiler plate water changing valve which is convenient to disassemble and assemble and can lower the overall height.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a hanging stove board trades outlet valve, is including the valve body that is equipped with the valve pocket and install the motor on the valve body, the middle part of valve body is equipped with the water inlet with valve pocket middle part intercommunication, the lower part of valve body is equipped with the first delivery port with the valve pocket intercommunication, the upper portion of valve body is equipped with the motor cabinet that is used for installing the motor with the valve pocket intercommunication to and the second delivery port with the valve pocket intercommunication, be equipped with the case in the valve pocket, the case passes through the valve rod and is connected with the motor, the case is equipped with the case chamber with the water inlet intercommunication, its characterized in that: the lower part of the valve core is provided with a lower opening which communicates the first water outlet with the valve core cavity when the valve core slides upwards to a set position, the upper part of the valve core is provided with an upper opening which communicates the second water outlet with the valve core cavity when the valve core slides downwards to a lower set position, the upper part of the valve cavity is provided with an upper end sealing seat which seals with the upper opening of the valve core when the valve core slides upwards to the set position, and the lower part of the valve cavity is provided with a lower end sealing seat which seals with the lower opening of the valve core when the valve core slides downwards to the lower set position.
Preferably, a valve core sleeve is fixedly installed in the valve core cavity, the upper end sealing seat is fixedly installed above the valve core sleeve and is communicated with the upper portion of the valve core sleeve through an upper communicating gap, the upper portion of the valve core sleeve is provided with an upper communicating port and is communicated with the second water outlet through the upper communicating gap, the middle portion of the valve core sleeve is provided with a middle communicating port communicated with the water inlet, and a lower communicating gap is formed between the lower portion of the valve core sleeve and the lower end sealing seat.
Preferably, the motor is mounted on the motor base by using a buckle.
Preferably, the motor is a synchronous motor.
Preferably, the valve core can slide up and down under the driving of the valve rod, and a first spring and a second spring which push the valve core to reset downwards and upwards are respectively installed on the valve rod.
Preferably, the middle of the valve core cavity is provided with a middle supporting block through which the valve rod can slide, the first ends of the first spring and the second spring are abutted against the middle supporting block, the valve rod is provided with a spring seat above the first spring for accommodating the upper end of the first spring, and the second end of the second spring is abutted against the lower end sealing seat.
Preferably, a guide sleeve which is matched with the valve rod in a guide mode is arranged on the lower end sealing seat, and the lower end of the second spring is installed on the guide sleeve.
Preferably, the motor base and the upper end sealing seat are of an integrated structure.
Preferably, a sealing guide sleeve for guiding the valve rod to slide up and down is arranged between the motor base and the upper end sealing base.
Preferably, the bottom of upper end seal receptacle is equipped with upper seal head, the last seal groove that is equipped with of upper seal head, be equipped with in the seal groove with the sealed last O type circle of case upper portion opening, the top of lower extreme seal receptacle is equipped with down seal head, be equipped with the seal groove on the lower seal head, be equipped with in the seal groove with the sealed lower O type circle of case lower part opening.
The invention integrates the space of the three-way switching valve of the wall-mounted boiler plate water exchange valve, designs scattered three-way switching structures into a combined valve core, the center of the valve core is provided with a valve core cavity for water to pass through, and the sealing switch with the upper end sealing seat and the lower end sealing seat is realized by the movement of the valve core, thereby achieving the purpose of three-way switching.
Drawings
The invention is further described with reference to the following figures and detailed description:
FIG. 1 is a schematic cross-sectional view showing the structure of example 1 of the present invention;
FIG. 2 is a schematic view of a portion of the structure of FIG. 1;
FIG. 3 is a schematic structural diagram of the embodiment 2 of the present invention;
fig. 4 isbase:Sub>A schematic view of the cross-sectional structurebase:Sub>A-base:Sub>A in fig. 3.
Detailed Description
The wall-mounted boiler plate water exchange valve is designed and developed for reducing the height of a product, integrating the internal space of a valve body, improving the installation efficiency, reducing the maintenance difficulty and saving the cost.
Embodiment 1, as shown in fig. 1 and 2, a wall-mounted stove plate water changing valve includes a valve body 10 having a valve cavity 100, a water inlet 101 communicating with the middle of the valve cavity is disposed in the middle of the valve body, a first water outlet 102 communicating with the valve cavity 100 is disposed in the lower portion of the valve body, a second water outlet 103 communicating with the valve cavity 100 is disposed in the upper portion of the valve body 10, a valve core 11 is disposed in the valve cavity 100, the valve core is connected to a valve rod 110, a stepping motor 14 connected to the valve rod 110 to drive the valve core 11 to slide up and down is disposed above the valve body 10, and a valve core cavity (not numbered) communicating with the water inlet 101, the first water outlet 102, and the second water outlet 103 is disposed in the valve core 11.
The middle of the valve core 11 is circumferentially provided with a middle communicating hole 113 which is communicated with the valve core cavity and the water inlet 101, the lower part of the valve core 11 is provided with a lower opening 111 which is used for communicating the first water outlet 102 with the valve core cavity when the valve core slides upwards to a set position, the upper part of the valve core 11 is provided with an upper opening 112 which is used for communicating the second water outlet 103 with the valve core cavity when the valve core 11 slides downwards to a lower set position, the upper part of the valve cavity 100 is provided with an upper end sealing seat 13 which is sealed with the upper opening 112 of the valve core 11 when the valve core 11 slides upwards to the set position, and the lower part of the valve cavity 100 is provided with a lower end sealing seat 12 which is sealed with the lower opening of the valve core when the valve core slides downwards to the lower set position.
In the sliding process of the valve core 11, no matter the valve core 11 slides upwards to the upper set position or the valve core 11 slides downwards to the lower set position, the middle communication hole 113 always communicates the valve core cavity with the water inlet 101. When the valve core 11 slides upwards to the upper setting position, a first water outlet waterway communicated with the first water outlet 102 and the water inlet 101 is formed, and when the valve core 11 slides downwards to the lower setting position, a second water outlet waterway communicated with the second water outlet 103 and the water inlet 101 is formed.
An upper sealing head 131 is arranged at the bottom of the upper end sealing seat 13, a sealing groove is formed in the upper sealing head 131, and an upper O-shaped ring 132 sealed with an opening in the upper portion of the valve element is arranged in the sealing groove. The top of lower extreme seal receptacle 12 is equipped with down sealed head 121, be equipped with the seal groove on the sealed head 121 down, be equipped with in the seal groove with the sealed lower O type circle 122 of case lower part opening.
Further, a spool sleeve 104 is hermetically installed in the valve cavity 100, and the spool 11 slides up and down along the inner wall of the spool sleeve 104. The upper end sealing seat 13 is mounted on the upper portion of the valve core sleeve 104, an upper portion communicating gap (not numbered) is reserved between the upper end sealing seat 13 and the valve core sleeve 104, the upper portion communicating gap can be blocked by moving the valve core 11 upwards, so that sealing between the upper end sealing seat 13 and the valve core sleeve 104 is achieved, an upper communicating port communicated with the second water outlet 103 is arranged on the upper portion of the valve core sleeve 104, a middle communicating port communicated with the water inlet 101 is arranged in the middle of the valve core sleeve 104, and a lower portion communicating gap (not numbered) is arranged between the lower portion of the valve core sleeve 104 and the lower end sealing seat 12. When the valve core 11 slides upwards, the lower communication gap is gradually opened, when the valve core 11 slides downwards, the lower communication gap is gradually closed, and when the lower port of the valve core is contacted with the lower O-shaped ring 122 on the lower end sealing seat, the lower communication gap is completely closed.
The valve core 11 slides up and down in the valve core sleeve 104, when the flow channel is sealed, the water pressure force can be acted on the inner wall of the valve core and is vertical to the sliding direction of the valve core, so that the effect of reducing the radial acting force of the water pressure on the valve core is achieved, the water pressure in the up-down direction can not be formed, the valve core is displaced, the hidden danger that the sealing surface leaks due to the fact that the valve core is displaced after the water pressure is increased can be prevented, and the service life of a product is prolonged.
A sealing ring is arranged on the outer circle of the valve core 11 and is in sliding sealing contact with the inner wall of the valve core sleeve 104, when the stepping motor 14 moves upwards to an upper set position, the upper port of the valve core is in contact with an upper O-shaped ring 132 on the upper end sealing seat, so that the second water outlet channel is closed, and the first water outlet channel is opened; when the stepping motor 14 moves downwards to a lower set position, the lower port of the valve core contacts with the lower O-shaped ring 122 on the lower end sealing seat, so that the first water outlet waterway is closed, and the second water outlet waterway is opened, thereby realizing three-way switching.
In addition, the stepping motor 14 is mounted on the motor base 141 by using a buckle 142, so that the installation and the disassembly are convenient. The upper end sealing seat 13 is arranged below the motor seat 141, the valve core 11 is fixed on one end of the valve rod, and the other end of the valve rod penetrates through the motor seat and is fixed on the stepping motor 14.
As shown in fig. 3 and 4, embodiment 2 of the present invention has substantially the same structure as embodiment 1, and includes a cylindrical spool 11 having a spool chamber, and is different in that a stepping motor is replaced with a synchronous motor; a first spring 1101 and a second spring 1102 for pushing the valve core 11 to return downwards and upwards are connected to the valve rod 110; meanwhile, the spool sleeve 104 shown in fig. 1 and 2 is omitted from illustration in embodiment 2.
The middle of the valve core cavity is provided with a middle support stop through which the valve rod can slide, the first ends of the first spring 1101 and the second spring 1102 are abutted against the middle support stop, the valve rod 110 is provided with a spring seat 1103 above the first spring for accommodating the upper end of the first spring 1101, and the second end of the second spring 1102 is abutted against the lower end seal seat 12. The lower end sealing seat 12 is provided with a guide sleeve 123 which is matched with the valve rod in a guide way, and the lower end of the second spring 1102 is arranged on the guide sleeve 123.
In this embodiment, a conventional synchronous motor is adopted, and the return spring (the first spring and the second spring) of the valve element 11 is embedded in the valve element cavity, and the valve rod 110 is pushed by the return spring of the valve element 11 to drive the valve element 11 to realize sealed opening and closing with the upper end sealing seat 13 and the lower end sealing seat 12, so that the space is saved, and the cost is reduced.
In addition, compared with embodiment 1, embodiment 2 is further different in that the motor seat 141 and the upper end seal seat 13 are changed into an integral structure, so that the internal structure of the valve cavity 100 is more compact and the valve cavity is convenient to install. A sealing guide sleeve 133 for guiding the valve stem 110 to slide up and down is arranged between the motor seat 141 and the upper end sealing seat 13.
Claims (7)
1. The utility model provides a hanging stove board trades outlet valve, is including the valve body that is equipped with the valve pocket and install the motor on the valve body, the middle part of valve body is equipped with the water inlet with valve pocket middle part intercommunication, the lower part of valve body is equipped with the first delivery port with the valve pocket intercommunication, the upper portion of valve body is equipped with the motor cabinet that is used for installing the motor with the valve pocket intercommunication to and the second delivery port with the valve pocket intercommunication, be equipped with the case in the valve pocket, the case passes through the valve rod and is connected with the motor, the case is equipped with the case chamber with the water inlet intercommunication, its characterized in that: the lower part of the valve core is provided with a lower opening which communicates the first water outlet with the valve core cavity when the valve core slides upwards to a set position, the upper part of the valve core is provided with an upper opening which communicates the second water outlet with the valve core cavity when the valve core slides downwards to a lower set position, the upper part of the valve cavity is provided with an upper end sealing seat which seals with the upper opening of the valve core when the valve core slides upwards to the set position, and the lower part of the valve cavity is provided with a lower end sealing seat which seals with the lower opening of the valve core when the valve core slides downwards to the lower set position;
a valve core sleeve is fixedly arranged in the valve core cavity, the upper end sealing seat is fixedly arranged above the valve core sleeve and is provided with an upper communicating gap with the valve core sleeve, the upper part of the valve core sleeve is provided with an upper communicating port and is communicated with the second water outlet through the upper communicating gap, the middle part of the valve core sleeve is provided with a middle communicating port communicated with the water inlet, and a lower communicating gap is arranged between the lower part of the valve core sleeve and the lower end sealing seat;
the valve core can slide up and down under the driving of the valve rod, and a first spring and a second spring which push the valve core to reset downwards and upwards are respectively arranged on the valve rod;
the middle of the valve core cavity is provided with a middle supporting block through which the valve rod can slide, the first ends of the first spring and the second spring are abutted against the middle supporting block, the valve rod is provided with a spring seat for accommodating the upper end of the first spring above the first spring, and the second end of the second spring is abutted against the lower end sealing seat.
2. The wall-hanging stove plate trades outlet valve of claim 1, characterized in that: the motor is installed on the motor base by using a buckle.
3. The wall-hanging stove plate trades outlet valve of claim 1, characterized in that: the motor is a synchronous motor.
4. The wall-hanging stove plate trades outlet valve of claim 1, characterized in that: the lower end sealing seat is provided with a guide sleeve which is matched with the valve rod in a guide mode, and the lower end of the second spring is installed on the guide sleeve.
5. The wall-hanging stove plate trades outlet valve of claim 1, characterized in that: the motor base and the upper end sealing seat are of an integrated structure.
6. The wall-hanging stove plate trades outlet valve of claim 5, characterized in that: and a sealing guide sleeve for guiding the valve rod to slide up and down is arranged between the motor base and the upper end sealing base.
7. The wall-hanging stove plate trades outlet valve of claim 1, characterized in that: the bottom of upper end seal receptacle is equipped with upper seal head, be equipped with the seal groove on the upper seal head, be equipped with in the seal groove with the sealed last O type circle of case upper portion opening, the top of lower extreme seal receptacle is equipped with down seal head, be equipped with the seal groove on the lower seal head, be equipped with in the seal groove with the sealed lower O type circle of case lower part opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710089861.5A CN106838372B (en) | 2017-02-20 | 2017-02-20 | Hanging stove board trades outlet valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710089861.5A CN106838372B (en) | 2017-02-20 | 2017-02-20 | Hanging stove board trades outlet valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106838372A CN106838372A (en) | 2017-06-13 |
| CN106838372B true CN106838372B (en) | 2023-04-18 |
Family
ID=59128958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710089861.5A Active CN106838372B (en) | 2017-02-20 | 2017-02-20 | Hanging stove board trades outlet valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106838372B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107314125B (en) * | 2017-07-14 | 2023-12-22 | 浙江华益精密机械有限公司 | Step type three-way switching valve |
| CN111503324B (en) * | 2020-02-13 | 2022-02-01 | 佛山市顺德区美的洗涤电器制造有限公司 | Fluid flow control device and gas stove |
| CN112628837B (en) * | 2020-11-30 | 2022-02-15 | 北方瑞能(内蒙古)集团有限公司 | Multiple heat exchange system based on deep well heat exchange technology |
| CN114698531B (en) * | 2022-05-13 | 2023-12-26 | 东恒雍禾建设股份有限公司 | Watering device for afforestation |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032604B (en) * | 2011-09-30 | 2016-06-22 | 株式会社能率 | Valve gear and hot-water supply |
| CN202674387U (en) * | 2012-07-13 | 2013-01-16 | 浙江春晖智能控制股份有限公司 | Seal assembly built-in type water route switching module and water route module |
| CN203051887U (en) * | 2012-12-07 | 2013-07-10 | 恒翔控股集团有限公司 | Wall-hanging stove water outlet valve |
| CN203979416U (en) * | 2014-04-25 | 2014-12-03 | 大连环资科技有限公司 | A kind of electronic hot-resistant valve door device |
| CN204025774U (en) * | 2014-06-30 | 2014-12-17 | 广州迪森家用锅炉制造有限公司 | Change the outlet valve of integrating water route for gas-heating water heater plate |
| CN204140947U (en) * | 2014-08-11 | 2015-02-04 | 广东合胜金属制造有限公司 | A kind of reversing water valve of heating equipment |
| CN204664492U (en) * | 2015-04-15 | 2015-09-23 | 厦门建霖工业有限公司 | Water filter safety valve |
| CN205350430U (en) * | 2016-01-16 | 2016-06-29 | 吴小艇 | Flow control valve |
| CN205877267U (en) * | 2016-07-06 | 2017-01-11 | 诸暨新仁金属制品有限公司 | Hanging is high accuracy water route controlling means for stove |
| CN206572016U (en) * | 2017-02-20 | 2017-10-20 | 浙江华益精密机械股份有限公司 | A kind of wall hanging furnace plate swaps out water valve |
-
2017
- 2017-02-20 CN CN201710089861.5A patent/CN106838372B/en active Active
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| Publication number | Publication date |
|---|---|
| CN106838372A (en) | 2017-06-13 |
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| CB02 | Change of applicant information |
Address after: 311835 no.689 Jiefang Road, Diankou Town, Zhuji City, Shaoxing City, Zhejiang Province Applicant after: Zhejiang Huayi Precision Machinery Co.,Ltd. Address before: 311835 no.689 Jiefang Road, Diankou Town, Zhuji City, Shaoxing City, Zhejiang Province Applicant before: ZHEJIANG HUAYI PRECISION MACHINERY Co.,Ltd. |
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