CN221880389U - On-off controller applied to heat supply metering system - Google Patents

Abstract

The utility model relates to an on-off controller applied to a heat supply metering system. The valve comprises a valve body with a female connector at one end and a connecting nut at the other end, and a valve core is arranged in the valve body; the valve body is characterized by further comprising a lower shell and an upper shell which is arranged at the top of the lower shell in an offset manner, wherein a lower shaft seat is arranged at the top of the valve body, an upper shaft seat is arranged at the bottom of the lower shell, the upper end of the lower shaft seat is in butt joint with the lower end of the upper shaft seat, a driving rotating shaft is arranged in the lower shaft seat, the lower end of the driving rotating shaft is connected with a valve core, and a manual knob is arranged at the upper end of the driving rotating shaft; a control circuit board, a driving motor and a driving gear driven by the control circuit board are arranged in the upper shell, and a driven gear meshed with the driving gear for transmission is arranged on the driving rotating shaft; and a cable connector is also arranged on the side part of the upper shell, and the driving motor and the cable connector are connected with a control circuit board. The utility model has the dual functions of electric control and manual control, and supports manual operation under abnormal conditions.

Description

An on-off controller for heat metering system

Technical Field

The utility model belongs to the technical field of on-off controllers, in particular to an on-off controller applied to a heat supply metering system.

Background Art

On-off controllers are widely used in various media pipe networks to control the on-off of pipelines, such as in heat metering systems. With the development of technology, traditional manual on-off controllers are gradually replaced by electric on-off controllers, which make remote control possible. The remote controller sends on-off control instructions to the on-off controller through the signal cable to achieve remote control of the pipeline on-off.

Electric on-off controllers require a stable power supply and a stable signal receiving path. When the power supply and signal transmission path fail, the on-off controller will not be able to operate normally. At this time, it will have a serious impact on important pipelines (such as the aforementioned heating pipeline). Therefore, the on-off controller used in such scenarios needs to have the ability to be manually operated under power-off/signal-off conditions, and the on-off controller can be reset or manually adjusted to other states through manual operation. The current on-off controller does not have the aforementioned functions and needs to be developed and designed according to industry needs.

Utility Model Content

The utility model provides an on-off controller applied to a heat supply metering system to solve the technical problems existing in the known technology, which has the dual functions of electric control and manual control and supports manual operation under abnormal circumstances.

The utility model adopts the following technical scheme to solve the technical problems existing in the known technology: an on-off controller applied to a heating metering system, comprising a valve body with a female connector at one end and a connecting nut at the other end, a valve core being installed in the valve body; further comprising a lower shell and an upper shell offsetly installed on the top of the lower shell, a lower shaft seat being installed on the top of the valve body, an upper shaft seat being installed on the bottom of the lower shell, an upper end of the lower shaft seat being butt-jointed with a lower end of the upper shaft seat and a driving shaft being provided inside, a lower end of the driving shaft being connected with the valve core, and a manual knob being installed on the upper end of the driving shaft; a control circuit board, a driving motor and a driving gear driven by the driving motor are installed in the upper shell, a driven gear meshing with the driving gear is installed on the driving shaft; a cable connector is also installed on the side of the upper shell, and the driving motor and the cable connector are connected with the control circuit board.

Preferably, the driving shaft comprises an upper shaft whose upper end is butt-jointed with the output shaft of the driving motor and a lower shaft whose lower end is fixedly connected with the valve core, and the lower end of the upper shaft is plug-jointed with the upper end of the lower shaft.

Preferably, a flange is provided on the top of the lower shaft seat, and the flange is fixedly connected to the bottom of the upper shaft seat by screws.

Preferably, a limit assembly is also installed between the manual knob and the top wall of the lower shell, and the limit assembly includes a limit plate installed at the bottom of the manual knob and with a limit protrusion on the side, a fan-shaped positioning portion is provided on the top wall of the lower shell, and a limit block cooperating with the protrusion on the limit plate is installed on the fan-shaped positioning portion.

Preferably, the fan-shaped positioning portion includes an arc-shaped bar hole, teeth are provided on the inner and outer sides of the arc-shaped bar hole, teeth and a protrusion located in the arc-shaped bar hole are provided at the bottom of the limit block, and the limit block is fixedly connected to the fan-shaped positioning portion by bolts.

Preferably, the upper shell is composed of a bottom shell and an openable top shell, the top shell is fixedly connected to the bottom shell with multiple anti-disassembly screws, the control circuit board and the drive motor are installed inside the bottom shell, and the cable connector is installed and fixed on the side of the top shell.

The advantages and positive effects of the utility model are:

The utility model provides an on-off controller with a reasonable structural design for use in a heat metering system. Compared with the existing on-off controller, the valve core of the on-off controller in the utility model is electrically controlled by a driving shaft and a driving motor, a driving gear and a driven gear. By sending an on-off control instruction to the driving motor, the deflection control of the valve core is realized, thereby realizing the on-off control function of the pipeline. By installing a manual knob on the top of the driving shaft, the state of the valve core can be changed by the manual knob when power failure and signal failure occur. Therefore, the on-off controller in the utility model has the dual functions of electric control and manual control, and supports manual operation under abnormal conditions.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the front perspective structure of the utility model;

FIG2 is a schematic diagram of the three-dimensional structure of the utility model;

Fig. 3 is a schematic diagram of the lower structure of the utility model;

FIG. 4 is a schematic diagram of the upper structure of the utility model, with the upper shell and its attached components removed.

In the figure:

1. Female connector; 2. Valve core; 3. Valve body; 4. Lower shaft; 5. Lower shaft seat; 6. Connecting nut; 7. Upper shaft; 8. Driven gear; 9. Lower housing; 10. Manual knob; 11. Driving gear; 12. Control circuit board; 13. Drive motor; 14. Upper housing; 15. Cable connector; 16. Upper shaft seat; 17. Anti-disassembly screw; 18. Limit plate; 19. Fan-shaped positioning part; 20. Limit block.

DETAILED DESCRIPTION

In order to further understand the content, features and effects of the present invention, the following embodiments are given to explain in detail.

Please refer to Figures 1 and 2. The on-off controller of the utility model applied to the heat metering system includes a valve body 3 with a female connector 1 at one end and a connecting nut 6 at the other end, and a valve core 2 is installed in the valve body 3.

The purpose of providing the female connector 1 and the connecting nut 6 is to improve the convenience of connecting the on-off control valve with the external pipeline. Specifically, as shown in Figures 1 and 3, the female connector 1 is provided at the left end of the valve body 3, and is formed by processing an internal thread on the left end of the valve body 3. The connecting nut 6 is provided at the right end of the valve body 3. The connecting nut 6 can rotate around the center line of the valve body 3. When the on-off control valve is connected to the pipeline, the female connector 1 is threadedly connected to the pipeline with an external thread at the end, and the pipeline on the other side with an external thread at the end is threadedly connected to the connecting nut 6.

It also includes a lower shell 9 and an upper shell 14 offsetly installed on the top of the lower shell 9. A lower shaft seat 5 is installed on the top of the valve body 3, and an upper shaft seat 16 is installed on the bottom of the lower shell 9. The upper end of the lower shaft seat 5 is docked with the lower end of the upper shaft seat 16 and a driving shaft is provided inside. The lower end of the driving shaft is connected to the valve core 2.

A manual knob 10 is installed at the upper end of the driving shaft, and the manual knob 10 can be used to operate the driving shaft to rotate, thereby manually operating the valve core 2 to deflect and rotate in the valve body 3 to achieve control of the on-off state.

In this embodiment, a limit assembly is also installed between the manual knob 10 and the top wall of the lower housing 9, and the function of the limit assembly is to limit the rotation position of the manual knob 10. Referring to FIG. 2 , it can be seen that the limit assembly includes a limit plate 18 installed at the bottom of the manual knob 10 and having a limit protrusion on the side. When the manual knob 10 is operated to rotate, the limit plate 18 rotates synchronously therewith. A fan-shaped positioning portion 19 is provided on the top wall of the lower housing 9, and a limit block 20 is installed on the fan-shaped positioning portion 19 to cooperate with the protrusion on the limit plate 18. When the manual knob 10 is operated to rotate, the limit block 20 has a blocking effect on the protrusion on the limit plate 18, and the rotation position of the manual knob 10 is limited accordingly. As shown in FIG. 2 , two groups of fan-shaped positioning portions 19 and limit blocks 20 are provided, and two protrusions are provided on the limit plate 18. When the manual knob 10 is operated to rotate forward, one of the protrusions of the limit plate 18 contacts one of the limit blocks 20. When the manual knob 10 is operated to rotate reversely, the other protrusion of the limit plate 18 contacts the other limit block 20.

In this embodiment, the fan-shaped positioning portion 19 includes an arc-shaped bar hole, and teeth are provided on the inner and outer sides of the arc-shaped bar hole. Teeth and a protrusion located in the arc-shaped bar hole are provided at the bottom of the limit block 20, and the limit block 20 is fixedly connected to the fan-shaped positioning portion 19 by bolts. In this way, the positions of the two limit blocks 20 on the two fan-shaped positioning portions 19 can be adjusted and set, that is, the positions of the two limit blocks 20 on the outer sides of the manual knob 10 in the circumferential direction can be adjusted and set, and the rotation position range of the manual knob 10 can be adjusted and set accordingly.

A control circuit board 12, a drive motor 13 and a driving gear 11 driven by the drive motor 13 are installed in the upper housing 14, a driven gear 8 meshing with the driving gear 11 is installed on the driving shaft, and a cable connector 15 is also installed on the side of the upper housing 14, and the drive motor 13 and the cable connector 15 are connected to the control circuit board 12. The drive motor 13 drives the drive shaft to rotate forward or reverse through a transmission gear set composed of the driving gear 11 and the driven gear 8, and the cable connector 15 is provided for connecting with an external power cable and a signal cable.

In this embodiment, a flange is provided on the top of the lower shaft seat 5, and the flange is fixedly connected with the bottom of the upper shaft seat 16 by screws. In this way, the valve body 3 and its attached parts and the upper shaft seat 16 and its attached parts can be separated into two parts, upper and lower.

Further, the driving shaft includes an upper shaft 7 whose upper end is docked with the output shaft of the driving motor 13 and a lower shaft 4 whose lower end is fixedly connected to the valve core 2, and the lower end of the upper shaft 7 is plug-connected with the upper end of the lower shaft 4. As shown in FIG. 1 , the upper shaft 7 is located in the upper shaft seat 16, and the lower shaft 4 is located in the lower shaft seat 5.

In this embodiment, the upper shell 14 is composed of a bottom shell and an openable top shell. The top shell is fixedly connected to the bottom shell by a plurality of anti-disassembly screws 17. The control circuit board 12 and the drive motor 13 are installed inside the bottom shell, and the cable connector 15 is installed and fixed on the side of the top shell. The use of the anti-disassembly screws 17 for connection is to prevent the upper shell 14 from being opened arbitrarily, and only staff with specific tools can open and close the upper shell 14.

Operation mode:

Connect the on-off controller to the pipeline; the upper control machine or controller sends a control command to the control circuit board 12 through the signal cable, and the control command is a closing command or an opening command; after the control circuit board 12 receives the control command, the drive motor 13 drives the drive shaft to rotate through the transmission gear set, and accordingly, the valve core 2 deflects and rotates in the valve body 3, and the valve is closed or opened; in this process, the manual knob 10 rotates synchronously with the drive shaft, and because the limit plate 18 rotates synchronously with the manual knob 10, when the protrusion on its side is aligned with the limit plate at one position, the manual knob 10 rotates synchronously with the limit plate 18. When the limit plate 18 contacts the limit block 20, the drive shaft cannot rotate further and is thus limited to the current position (closed position). Conversely, when the protrusion on the side of the limit plate 18 contacts the limit block 20 at another position, the drive shaft cannot rotate further and is thus limited to the current position (open position). When the power supply or signal transmission is interrupted, the on-off control valve cannot operate correctly. At this time, the operation and maintenance staff operates the manual knob 10 on site to manually drive the valve core 2 to deflect in the valve body 3. The amplitude of the deflection action is also limited by the limit plate 18 and the limit block 20.

Claims (6)

1. An on-off controller for a heat metering system, characterized in that: it comprises a valve body (3) with a female connector (1) at one end and a connecting nut (6) at the other end, a valve core (2) being installed in the valve body (3); it also comprises a lower shell (9) and an upper shell (14) offsetly installed on the top of the lower shell (9), a lower shaft seat (5) being installed on the top of the valve body (3), an upper shaft seat (16) being installed on the bottom of the lower shell (9), the upper end of the lower shaft seat (5) being butt-connected with the lower end of the upper shaft seat (16) A driving shaft is provided inside, the lower end of the driving shaft is connected to the valve core (2), and a manual knob (10) is installed on the upper end of the driving shaft; a control circuit board (12), a driving motor (13) and a driving gear (11) driven by the driving motor are installed in the upper shell (14), and a driven gear (8) meshing with the driving gear (11) is installed on the driving shaft; a cable connector (15) is also installed on the side of the upper shell (14), and the driving motor (13) and the cable connector (15) are connected to the control circuit board (12). 2. The on-off controller for a heat metering system as described in claim 1 is characterized in that: the driving shaft includes an upper shaft (7) whose upper end is butt-connected to the output shaft of a driving motor (13) and a lower shaft (4) whose lower end is fixedly connected to the valve core (2), and the lower end of the upper shaft (7) is plug-connected to the upper end of the lower shaft (4). 3. The on-off controller used in the heat metering system as described in claim 2 is characterized in that a flange is provided on the top of the lower shaft seat (5), and the flange is fixedly connected to the bottom of the upper shaft seat (16) by screws. 4. The on-off controller for a heat metering system as described in claim 3 is characterized in that: a limit assembly is also installed between the manual knob (10) and the top wall of the lower shell (9), the limit assembly includes a limit plate (18) installed at the bottom of the manual knob (10) and having a limit protrusion on the side, a fan-shaped positioning portion (19) is provided on the top wall of the lower shell (9), and a limit block (20) is installed on the fan-shaped positioning portion (19) to cooperate with the protrusion on the limit plate (18). 5. The on-off controller for a heat metering system as described in claim 4 is characterized in that: the fan-shaped positioning portion (19) includes an arc-shaped strip hole, teeth are provided on the inner and outer sides of the arc-shaped strip hole, teeth and a protrusion located in the arc-shaped strip hole are provided at the bottom of the limit block (20), and the limit block (20) is fixedly connected to the fan-shaped positioning portion (19) by bolts. 6. The on-off controller for a heat metering system as claimed in claim 5 is characterized in that: the upper shell (14) is composed of a bottom shell and an openable top shell, the top shell is fixedly connected to the bottom shell by a plurality of anti-disassembly screws (17), the control circuit board (12) and the drive motor (13) are installed inside the bottom shell, and the cable connector (15) is installed and fixed on the side of the top shell.