CN211375435U - Hot water automatic discharging device for hot water pool - Google Patents
Hot water automatic discharging device for hot water pool Download PDFInfo
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- CN211375435U CN211375435U CN202020136199.1U CN202020136199U CN211375435U CN 211375435 U CN211375435 U CN 211375435U CN 202020136199 U CN202020136199 U CN 202020136199U CN 211375435 U CN211375435 U CN 211375435U
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Abstract
The utility model discloses an automatic hot water discharge device for a hot water tank, which comprises a water pump, a floating component, a connecting wire, a sensor group and a control circuit, wherein the water pump is connected on a drain pipe of the hot water tank to pump away water in the hot water tank; the floating assembly comprises a floating ball floating on the water surface of the hot water pool and a connecting rod of which the lower end is connected with the floating ball, at least one guide sleeve is fixed on the side wall of the hot water pool, and the connecting rod is inserted in the guide sleeve in a lifting way; one end of the connecting wire is connected with the upper end of the connecting rod, and the other end of the connecting wire is connected with the stop iron after passing around a fixed pulley fixed above the hot water pool; the sensor group comprises a first proximity sensor and a second proximity sensor, wherein the first proximity sensor is suitable for detecting that the stop iron descends to the position of the stop iron to generate a starting signal, and the second proximity sensor is suitable for detecting that the stop iron ascends to the position of the stop iron to generate a stopping signal; the control circuit is respectively connected with the first proximity sensor, the second proximity sensor and the water pump. The utility model discloses can avoid sensor group and control circuit and water contact, and then avoid short-circuit fault.
Description
Technical Field
The utility model relates to an automatic discharging equipment of hot-water tank hot water belongs to the boiler or discharges high temperature hot water equipment field.
Background
In boiler or discharge high temperature hot water equipment, automatic pumping in the hot-water tank, the most used of prior art is floater level switch, floater level switch directly floats on the surface of water, along with the decline of water level rising together, prior art switches on in the floater liquid level when the water level is high, the water pump is automatic to pump water, when the water level reduces, along with the together decline of water level, switch off in the floater liquid level, the water pump automatic stop, current sensor switch and water direct contact, probably cause sensor circuit short circuit fault because of the temperature height of water, there is certain potential safety hazard.
Disclosure of Invention
The utility model aims to solve the technical problem that overcome prior art's defect, provide a hot-water tank hot water automatic discharging device, it can avoid sensor group and control circuit and water contact, and then avoided short-circuit fault.
In order to solve the technical problem, the technical scheme of the utility model is that: an automatic hot water discharge device for a hot water tank, comprising:
the water pump is connected to a drain pipe of the hot water pool to pump away water in the hot water pool;
the floating assembly comprises a floating ball floating on the water surface of the hot water pool and a connecting rod, the lower end of the connecting rod is connected with the floating ball so as to synchronously lift along with the floating ball, at least one guide sleeve is fixed on the side wall of the hot water pool, and the connecting rod is inserted into the guide sleeve in a lifting manner;
one end of the connecting wire is connected with the upper end of the connecting rod, and the other end of the connecting wire is connected with the stop iron after passing around a fixed pulley fixed above the hot water pool;
the sensor group comprises a first proximity sensor and a second proximity sensor, wherein the first proximity sensor is suitable for detecting that the stop iron descends to the position of the stop iron to generate a starting signal, and the second proximity sensor is suitable for detecting that the stop iron ascends to the position of the stop iron to generate a stopping signal;
the control circuit is respectively connected with the first proximity sensor, the second proximity sensor and the water pump and is suitable for controlling the water pump to be started when a starting signal is received; and controlling the water pump to be turned off when the stop signal is received.
Further to prevent malfunction of the first proximity sensor and the second proximity sensor, the sensor set further comprises:
the third proximity sensor is suitable for detecting that the stop iron descends to the position of the stop iron to generate a starting signal, is positioned below the first proximity sensor and is connected with the control circuit;
and the fourth proximity sensor is suitable for detecting that the stop iron rises to the position of the stop iron to generate a stop signal, is positioned above the second proximity sensor and is connected with the control circuit.
Further in order to prevent the floating ball from being damaged, the floating ball is a stainless steel floating ball.
Further in order to prevent the floating ball from causing impact force to the guide sleeve along with the fluctuation of the water surface when water fluctuation occurs, the hot water automatic discharging device of the hot water tank also comprises a circular screen which is arranged in the hot water tank and used for limiting the position of the floating ball.
Further in order to prevent the influence on the sensing effect of the sensor group caused by the shaking of the stop iron, the hot water automatic discharge device of the hot water pool also comprises a pipe for preventing the shaking of the stop iron, and the stop iron is lifted in the pipe.
Further provides a specific structure of a control circuit, wherein the control circuit comprises a normally open contact 2-3 of a first proximity sensor, a normally closed contact 3-4 of a second proximity sensor, a normally open contact 2-3 of a third proximity sensor, a normally closed contact 4-5 of a fourth proximity sensor, an intermediate relay KA and a contactor KM; wherein the content of the first and second substances,
a normally open contact 2-3 of the first proximity sensor, a normally closed contact 3-4 of the second proximity sensor, a normally closed contact 4-5 of the fourth proximity sensor and a coil of the intermediate relay KA are sequentially connected in series between a live wire L and a zero wire N of the power supply;
a normally open contact 2-3 of the third proximity sensor and a normally open contact 2-3 of the intermediate relay KA are connected with the normally open contact 2-3 of the first proximity sensor in parallel respectively;
one end of a series circuit formed by connecting a coil of the contactor KM and normally open contacts 1-8 of the intermediate relay KA in series is connected with the live wire L, and the other end of the series circuit is connected with the zero line N;
and a normally open contact of the contactor KM is connected between a power supply of the water pump and the water pump to be used as a control switch of the water pump.
Further, in order to facilitate the knowledge of whether the water pump is working, the automatic hot water discharge device of the hot water tank further comprises a working indicator lamp HL1 connected in parallel with the coil of the contactor KM.
Further, in order to manually control the operation of the water pump, the control circuit also comprises a manual/automatic change-over switch SA, a starting button SB2 and a stopping button SB 1; wherein the content of the first and second substances,
the control circuit also comprises a manual/automatic change-over switch SA, a start button SB2 and a stop button SB 1; wherein the content of the first and second substances,
the stop button SB1 is a normally closed contact, and the start button SB2 is a normally open contact;
the normally closed contact 1-2 of the manual/automatic change-over switch SA is connected in series with a series circuit formed by connecting a normally open contact 2-3 of the first proximity sensor, a normally closed contact 3-4 of the second proximity sensor, a normally closed contact 4-5 of the fourth proximity sensor and a coil of the intermediate relay KA in series;
one end of a series circuit formed by connecting the normally open contacts 1-6 of the manual/automatic change-over switch SA, the stop button SB1 and the start button SB2 in series is connected with a live wire, and the other end of the series circuit is connected with a coil of the intermediate relay KA in series.
Further, in order to conveniently know whether the automatic hot water discharging device of the hot water pool is in an automatic state or a manual state, the automatic hot water discharging device of the hot water pool further comprises an automatic indicator light HL2, and a series circuit formed by the automatic indicator light HL2 and normally closed contacts 1-9 of the manual/automatic change-over switch SA is connected between a live wire L and a zero wire N.
After the technical scheme is adopted, the utility model discloses following beneficial effect has:
1. the floating ball floats on the water surface of the hot water pool, the connecting rod is connected with the floating ball to synchronously lift along with the floating ball, one end of the connecting wire is connected with the connecting rod, the other end of the connecting wire is connected with the stop iron after bypassing the fixed pulley, and the automatic start and stop of the water pump are controlled through the cooperation of the first proximity sensor, the second proximity sensor, the stop iron and the control circuit;
2. the floating ball of the utility model adopts the stainless steel floating ball, thereby effectively avoiding the damage of the floating ball;
3. the utility model also adds the circular screen, can effectively prevent the floating ball from floating and drifting along with the fluctuation of the water surface when the water fluctuation occurs, and controls the floating range of the floating ball in the limit range of the circular screen, thereby reducing the impact force of the connecting rod on the guide sleeve and ensuring the accurate scale of the water level;
4. the utility model discloses a tubular product restricts the lift of stop iron, can effectively avoid the stop iron to take place to rock in the in-process that goes up and down, and then guarantees that the stop iron can be sensed by the sensor group accuracy, has further guaranteed the precision;
5. the utility model discloses a control circuit adopts electrical control's mode, and is more safe, scientific, the cost is reduced to save the resource, more do benefit to the market and use.
Drawings
Fig. 1 is a schematic structural view of an automatic hot water discharge device for a hot water tank of the present invention;
fig. 2 is a circuit diagram of the control circuit of the present invention.
Detailed Description
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.
As shown in fig. 1 and 2, an automatic hot water discharge device for a hot water tank comprises:
the water pump 1 is connected to a drain pipe of the hot water pool to pump water in the hot water pool;
the floating assembly comprises a floating ball 2 floating on the water surface of the hot water pool and a connecting rod 3 of which the lower end is connected with the floating ball 2 so as to synchronously lift along with the floating ball 2, at least one guide sleeve 4 is fixed on the side wall of the hot water pool, and the connecting rod 3 is inserted in the guide sleeve 4 in a lifting manner;
one end of the connecting wire 5 is connected with the upper end part of the connecting rod 3, and the other end of the connecting wire 5 is connected with a stop iron 7 after bypassing a fixed pulley 6 fixed above the hot water pool;
a sensor group comprising a first proximity sensor SQ1 adapted to detect the lowering of the stop iron 7 to its position to generate a start signal and a second proximity sensor SQ2 adapted to detect the raising of the stop iron 7 to its position to generate a stop signal;
the control circuit is respectively connected with the first proximity sensor SQ1, the second proximity sensor SQ2 and the water pump 1 and is suitable for controlling the water pump 1 to start when receiving a starting signal; and controlling the water pump 1 to be turned off when the stop signal is received.
In this embodiment, in order to prevent the floating ball 2 from being damaged, the floating ball 2 is a stainless steel floating ball.
Specifically, floater 2 floats on the hot-water tank surface of water, and connecting rod 3 links to each other with floater 2 in order to go up and down along with floater 2 synchronization, and the one end and the connecting rod 3 of connecting wire 5 link to each other, and the other end links to each other with stop iron 7 after walking around fixed pulley 6, and then control water pump 1 is controlled in the cooperation through first proximity sensor SQ1, second proximity sensor SQ2, stop iron 7 and control circuit and open and stop automatically, the utility model discloses a sensor group and control circuit not with water direct contact, and then avoided causing sensor group and control circuit short-circuit fault because of water, be favorable to whole hot-water tank hot water automatic discharging device to work for a long time steadily, also got rid of the potential safety hazard. The utility model discloses a floater 2 adopts the stainless steel floater, and then can effectively avoid floater 2 to damage.
As shown in fig. 1, in order to prevent malfunction of the first and second proximity sensors SQ1 and SQ2, the sensor group further includes:
a third proximity sensor SQ3 adapted to detect the lowering of the stop 7 to its position to generate a start signal, said third proximity sensor SQ3 being located below the first proximity sensor SQ1 and being connected to said control circuit;
and a fourth proximity sensor SQ4 adapted to detect that the stop iron 7 is lifted to its position to generate a stop signal, said fourth proximity sensor SQ4 being located above the second proximity sensor SQ2 and being connected to said control circuit.
As shown in fig. 1, in order to prevent the floating ball 2 from impacting the guide sleeve 4 along with the fluctuation of the water surface when the water fluctuates, the automatic hot water discharge device for the hot water tank further comprises a circular screen 9 which is arranged in the hot water tank and used for limiting the position of the floating ball 2.
Specifically, the utility model discloses still increased circular screen cloth 9, can prevent effectively that floater 2 from fluctuating along with the water level and drifting when the water fluctuation appears, control the scope of drifting of floater 2 in circular screen cloth 9's limiting range, and then can reduce connecting rod 3 to the impact force of guide pin bushing 4, guarantee the accurate scale of water level.
In this embodiment, the circular screen 9 is made of stainless steel.
As shown in fig. 1, in order to prevent the influence of the shaking of the stop 7 on the sensing effect of the sensor group, the automatic hot water discharge device for the hot water pool further comprises a pipe 10 for preventing the shaking of the stop 7, and the stop 7 is lifted and lowered in the pipe 10.
In the present embodiment, the tube 10 is a PVC square tube, but is not limited thereto.
Specifically, the utility model discloses a tubular product 10 restricts the lift of stop iron 7, can effectively avoid stop iron 7 to take place to rock at the in-process that goes up and down, and then guarantees that stop iron 7 can be sensed by sensor group accuracy, has further guaranteed the precision.
As shown in fig. 2, the control circuit comprises a normally open contact 2-3 of a first proximity sensor SQ1, a normally closed contact 3-4 of a second proximity sensor SQ2, a normally open contact 2-3 of a third proximity sensor SQ3, a normally closed contact 4-5 of a fourth proximity sensor SQ4, an intermediate relay KA and a contactor KM; wherein the content of the first and second substances,
a normally open contact 2-3 of a first proximity sensor SQ1, a normally closed contact 3-4 of a second proximity sensor SQ2, a normally closed contact 4-5 of a fourth proximity sensor SQ4 and a coil of an intermediate relay KA are sequentially connected in series between a live wire L and a zero wire N of a power supply;
a normally open contact 2-3 of the third proximity sensor SQ3 and a normally open contact 2-3 of the intermediate relay KA are respectively connected with a normally open contact 2-3 of the first proximity sensor SQ1 in parallel;
one end of a series circuit formed by connecting a coil of the contactor KM and normally open contacts 1-8 of the intermediate relay KA in series is connected with the live wire L, and the other end of the series circuit is connected with the zero line N;
and a normally open contact of the contactor KM is connected between a power supply of the water pump 1 and the water pump 1 to be used as a control switch of the water pump 1.
In the embodiment, the first proximity sensor SQ1 is used for controlling the on-off of the normally open contact 2-3, and when the first proximity sensor SQ1 detects the stop iron 7, the normally open contact 2-3 is controlled to be closed;
the second proximity sensor SQ2 is used for controlling the on-off of the normally closed contact 3-4, and when the second proximity sensor SQ2 detects the stop iron 7, the normally closed contact 3-4 is controlled to be opened;
the third proximity sensor SQ3 is used for controlling the on-off of the normally open contact 2-3, and when the third proximity sensor SQ3 detects the stop iron 7, the normally open contact 2-3 is controlled to be closed;
the fourth proximity sensor SQ4 controls the on/off of the normally closed contact 4-5, and when the fourth proximity sensor SQ4 detects the bar 7, controls the normally closed contact 4-5 to open.
As shown in fig. 2, in order to facilitate the knowledge of whether the water pump 1 is operated, the automatic hot water discharge device for a hot water tank further includes an operation indicator lamp HL1 connected in parallel with the coil of the contactor KM.
As shown in fig. 2, in order to manually control the operation of the water pump 1, the control circuit further comprises a manual/automatic switch SA, a start button SB2 and a stop button SB 1; wherein the content of the first and second substances,
the control circuit also comprises a manual/automatic change-over switch SA, a start button SB2 and a stop button SB 1; wherein the content of the first and second substances,
the stop button SB1 is a normally closed contact, and the start button SB2 is a normally open contact;
the normally closed contact 1-2 of the manual/automatic transfer switch SA is connected in series with a series circuit formed by connecting a normally open contact 2-3 of a first proximity sensor SQ1, a normally closed contact 3-4 of a second proximity sensor SQ2, a normally closed contact 4-5 of a fourth proximity sensor SQ4 and a coil of an intermediate relay KA in series;
one end of a series circuit formed by connecting the normally open contacts 1-6 of the manual/automatic change-over switch SA, the stop button SB1 and the start button SB2 in series is connected with a live wire, and the other end of the series circuit is connected with a coil of the intermediate relay KA in series.
In the present embodiment, in order that the water pump 1 can continue to operate by pressing the start button SB2 in the case where the water pump 1 is started in the manual state, the normally open contact 7-5 of the intermediate relay KA is connected in parallel to the start button SB 2.
As shown in fig. 2, in order to facilitate the knowledge of whether the automatic hot water discharge device of the hot water tank is in an automatic state or a manual state, the automatic hot water discharge device of the hot water tank further comprises an automatic indicator light HL2, and a series circuit formed by the automatic indicator light HL2 and the normally closed contacts 1-9 of the manual/automatic change-over switch SA is connected between the live wire L and the neutral wire N.
Specifically, high-temperature hot water discharged in production enters a hot water tank through a hot water inlet pipe, the water level of the hot water tank rises, the floating ball 2 and the connecting rod 3 rise together, the stop iron 7 descends through the fixed pulley 6 through the connecting wire 5, when the stop iron 7 descends to the height of the first proximity sensor SQ1, the normally open contact 2-3 of the first proximity sensor SQ1 is closed when the stop iron 7 is detected, the intermediate relay KA is electrified and sucked, the normally open contact 2-3 of the intermediate relay KA and the normally open contact 1-8 of the intermediate relay KA are closed, the contactor KM is electrified and sucked at the moment, the water pump 1 works, and the work indicator lamp HL1 is bright; the third proximity sensor SQ3 is a low limit start, which prevents the water pump 1 from not working when the stop 7 descends to the first proximity sensor SQ1, the water level from rising, the stop 7 continues to descend to the third proximity sensor SQ3, and the water pump 1 is working to prevent the water pump 1 from not working and not automatically pumping water after the first proximity sensor SQ1 fails.
When water enters the water pump 1 and is smaller than water exits, the water level gradually descends, the floating ball 2 and the connecting rod 3 descend simultaneously, the connecting rod 3 pulls the iron blocking 7 up through the connecting wire 5, after the iron blocking 7 rises and leaves the first proximity sensor SQ1, the normally-closed contact 2-3 of the intermediate relay KA is closed in a self-locking mode, the intermediate relay KA is still electrified and sucked, the water pump 1 continues to work, the water level continues to descend, when the iron blocking 7 rises to the second proximity sensor SQ2, the normally-closed contact 3-4 of the second proximity sensor SQ2 is disconnected, the intermediate relay KA is powered off, the contactor KM bounces open, the water pump 1 stops working, the fourth proximity sensor SQ4 is a stop limit function, when the water level descends, the iron blocking 7 rises to the second proximity sensor SQ2, if the normally-closed contact 4-5 of the fourth proximity sensor SQ4 is disconnected when the iron blocking 7 rises to the fourth proximity sensor SQ4, and stopping the water pump 1 to protect the water pump 1.
The utility model discloses increase manual function, when needing manual pumping, manual/automatic change over switch SA is twisted to manual position to artifical scene, manual/automatic change over switch SA's normally closed contact 1-2 disconnection, its normally open contact 1-6 is closed, its normally closed contact 1-9 disconnection simultaneously, the light of automatic indicator HL2 goes out, start button SB2 is pressed down, the auxiliary relay KA gets electric actuation, then the normally open contact 1-8 of auxiliary relay KA is closed, contactor KM gets electric actuation, water pump 1 works, stop button SB1 is pressed down, the auxiliary relay KA outage, contactor KM flicks, water pump 1 stop work. The operating condition of the water pump 1 is confirmed through the states of the work indicator light HL1 and the automatic indicator light HL2 during daily patrol of operators, and visualization is achieved.
The utility model discloses a control circuit adopts electrical control's mode, and is more safe, scientific, the cost is reduced to save the resource, more do benefit to the market and use.
The above-mentioned embodiments further explain in detail the technical problems, technical solutions and advantages solved by the present invention, and it should be understood that the above only is a specific embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. An automatic hot water discharge device of a hot water tank is characterized in that,
it includes:
the water pump (1), the said water pump (1) is connected to the drain pipe of the hot water pool in order to pump away the water in the hot water pool;
the floating assembly comprises a floating ball (2) floating on the water surface of the hot water pool and a connecting rod (3) of which the lower end is connected with the floating ball (2) so as to synchronously lift along with the floating ball (2), at least one guide sleeve (4) is fixed on the side wall of the hot water pool, and the connecting rod (3) is inserted in the guide sleeve (4) in a lifting manner;
one end of the connecting wire (5) is connected with the upper end part of the connecting rod (3), and the other end of the connecting wire (5) is connected with a stop iron (7) after passing around a fixed pulley (6) fixed above the hot water pool;
a sensor group comprising a first proximity sensor (SQ 1) adapted to detect the descent of the stop (7) into its position to generate a start signal and a second proximity sensor (SQ 2) adapted to detect the ascent of the stop (7) into its position to generate a stop signal;
the control circuit is respectively connected with the first proximity sensor (SQ 1), the second proximity sensor (SQ 2) and the water pump (1) and is suitable for controlling the water pump (1) to start when receiving a starting signal; and controlling the water pump (1) to be closed when the stop signal is received.
2. The automatic hot water discharge device for a hot water tank of claim 1,
the sensor group further includes:
a third proximity sensor (SQ 3) adapted to detect the lowering of the stop (7) to its position to generate a start signal, said third proximity sensor (SQ 3) being located below the first proximity sensor (SQ 1) and being connected to said control circuit;
and a fourth proximity sensor (SQ 4) adapted to detect the stop of the stop (7) when the stop is raised to its position, said fourth proximity sensor (SQ 4) being located above the second proximity sensor (SQ 2) and being connected to said control circuit.
3. The automatic hot water discharge device for a hot water tank of claim 1, wherein: the floating ball (2) is a stainless steel floating ball.
4. The automatic hot water discharge device for a hot water tank of claim 1, wherein: the floating ball type hot water boiler also comprises a circular screen (9) which is arranged in the hot water pool and used for limiting the position of the floating ball (2).
5. The automatic hot water discharge device for a hot water tank of claim 1, wherein: the anti-sway device is characterized by further comprising a pipe (10) used for preventing the stop iron (7) from swaying, wherein the stop iron (7) is lifted in the pipe (10).
6. The automatic hot water discharge device for hot water tank of claim 2, wherein: the control circuit comprises a normally open contact 2-3 of a first proximity sensor (SQ 1), a normally closed contact 3-4 of a second proximity sensor (SQ 2), a normally open contact 2-3 of a third proximity sensor (SQ 3), a normally closed contact 4-5 of a fourth proximity sensor (SQ 4), an intermediate relay KA and a contactor KM; wherein the content of the first and second substances,
a normally open contact 2-3 of a first proximity sensor (SQ 1), a normally closed contact 3-4 of a second proximity sensor (SQ 2), a normally closed contact 4-5 of a fourth proximity sensor (SQ 4) and a coil of an intermediate relay KA are sequentially connected in series between a live line L and a neutral line N of a power supply;
a normally open contact 2-3 of the third proximity sensor (SQ 3) and a normally open contact 2-3 of the intermediate relay KA are respectively connected with a normally open contact 2-3 of the first proximity sensor (SQ 1) in parallel;
one end of a series circuit formed by connecting a coil of the contactor KM and normally open contacts 1-8 of the intermediate relay KA in series is connected with the live wire L, and the other end of the series circuit is connected with the zero line N;
and a normally open contact of the contactor KM is connected between a power supply of the water pump (1) and the water pump (1) to be used as a control switch of the water pump (1).
7. The automatic hot water discharge device for a hot water tank of claim 6, wherein: and the work indicator lamp HL1 is connected with the coil of the contactor KM in parallel.
8. The automatic hot water discharge device for a hot water tank of claim 7, wherein: the control circuit also comprises a manual/automatic change-over switch SA, a start button SB2 and a stop button SB 1; wherein the content of the first and second substances,
the stop button SB1 is a normally closed contact, and the start button SB2 is a normally open contact;
the normally closed contact 1-2 of the manual/automatic transfer switch SA is connected in series with a series circuit formed by connecting a normally open contact 2-3 of a first proximity sensor (SQ 1), a normally closed contact 3-4 of a second proximity sensor (SQ 2), a normally closed contact 4-5 of a fourth proximity sensor (SQ 4) and a coil of an intermediate relay KA in series;
one end of a series circuit formed by connecting the normally open contacts 1-6 of the manual/automatic change-over switch SA, the stop button SB1 and the start button SB2 in series is connected with a live wire, and the other end of the series circuit is connected with a coil of the intermediate relay KA in series.
9. The automatic hot water discharge device for a hot water tank of claim 8, wherein: the automatic switching circuit also comprises an automatic indicator light HL2, and a series circuit formed by the automatic indicator light HL2 and the normally closed contacts 1-9 of the manual/automatic switching switch SA is connected between the live wire L and the zero wire N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020136199.1U CN211375435U (en) | 2020-01-20 | 2020-01-20 | Hot water automatic discharging device for hot water pool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020136199.1U CN211375435U (en) | 2020-01-20 | 2020-01-20 | Hot water automatic discharging device for hot water pool |
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| CN211375435U true CN211375435U (en) | 2020-08-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113026907A (en) * | 2021-03-06 | 2021-06-25 | 无锡市公用水务投资有限公司 | Rainwater recycle type municipal inspection shaft with anti-falling structure |
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2020
- 2020-01-20 CN CN202020136199.1U patent/CN211375435U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113026907A (en) * | 2021-03-06 | 2021-06-25 | 无锡市公用水务投资有限公司 | Rainwater recycle type municipal inspection shaft with anti-falling structure |
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