Pool liquid level switch device
By using float ball and connecting rod to drive the baffle to switch the trigger stroke switch in the pool level switch device, the problem of damage to the water level switch in high temperature environment is solved, and the normal drainage of the pool and the long life of the equipment are achieved.
Patent Information
- Application Number
- CN202421530165.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-01
AI Technical Summary
The existing pool level switch devices are prone to oxidation and wear and damage caused by hot water in high temperature environments, which leads to the pool being unable to drain normally.
A pool level switch device is designed. Through the cooperation of the float ball and the connecting rod, the baffle is driven to move up and down, and the trigger stroke switch is switched to control the opening and closing of the lower liquid pump to realize the drainage of the pool. At the same time, by setting a guide mechanism and spacing, hot water and water vapor are prevented from invading and damaging the stroke switch.
It effectively avoids the problem of water level switch damage due to hot water intrusion, ensures normal drainage of the pool, and extends the service life of the equipment.
Smart Images
Figure CN222801695U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water pool drainage, and more specifically, to a water pool liquid level switch device. Background Art
[0002] The hot water pool receives steam condensate from each workshop, and transports it to the 12-meter-high rooftop circulating water pool cooling tower for cooling through a submersible pump. It finally flows into the circulating water pool to replenish the circulating water, reduce the addition of industrial water, and save water costs.
[0003] Since the hot water pool receives steam condensate from various workshops, the temperature of the pool is relatively high. The temperature is measured with an infrared thermometer on the float device, and the displayed temperature is 90°C. A cable-type FQS stainless steel high-temperature float magnetic water level switch is selected, with an operating temperature of 0°C to 150°C, working pressure of 1.6mpa, service life of 5*100000 times, rated voltage of AC220V, rated current of 4A / 220V (resistive load), and the wiring method is in accordance with the drainage system wiring. After being put into use, the equipment can drain normally.
[0004] However, after one month of operation, the hot water pool could not drain, causing hot water to overflow. The overflowed hot water flowed into the rainwater pipe network system, causing the COD of the sewage treatment station drainage system to exceed the standard. After inspection, it was found that the water level switch did not work, causing the submersible pump to fail to operate normally. After cutting the water level switch with a cutting machine, it was found that the micro switch contacts were damaged due to hot water intrusion and contact oxidation and wear. After replacing the new water level switch, the equipment was able to drain normally. However, after a period of time, the hot water pool overflowed again due to the damage of the water level switch.
[0005] Therefore, it is necessary to propose a new solution to solve the above problems. Utility Model Content
[0006] The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art and to provide a pool liquid level switch device. The float rises and falls with the water level in the pool and synchronously drives the baffle to move up and down through a connecting rod. The baffle triggers the travel switch SQ1 and the travel switch SQ2 according to the water level of the pool to control the opening and closing of the submersible pump, thereby draining the water from the pool.
[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0008] A water pool liquid level switch device includes a float, a connecting rod, a baffle, a travel switch SQ1, and a travel switch SQ2, one end of the connecting rod is connected to the baffle, the baffle is located between the travel switch SQ1 and the travel switch SQ2, and the travel switch SQ1 is located above the travel switch SQ2, the other end of the connecting rod is connected to the float, the float floats on the water surface of the water pool, a mounting plate is installed on the side of the water pool, a mounting frame is installed on the mounting plate, the travel switch SQ1 and the travel switch SQ2 are installed on the mounting frame, and the baffle contacts the travel switch SQ1 and the travel switch SQ2 through the buoyancy of the float to control the opening and closing of the submersible pump.
[0009] Furthermore, the connecting rod is connected to a guide mechanism for guiding the up and down movement of the baffle, and the guide mechanism includes a support rod and a guide rod. The support rod is installed on the mounting plate. Two guide rods are provided, which are respectively installed on the upper and lower parts of the support rod. A guide ring is installed on each of the guide rods, and the connecting rod passes through the two guide rings.
[0010] Furthermore, the on-off control circuit of the submersible pump includes a circuit breaker QF1, a submersible pump M1, a submersible pump M2, a submersible pump switching control circuit, a fuse FU, an AC contactor KM1, an AC contactor KM2, an intermediate relay KA, a thermal overload relay FR1, a thermal overload relay FR2, and a transformer T. The submersible pump M1 is connected to the circuit breaker QF1 in sequence through the thermal element of the thermal overload relay FR1 and the main contact of the AC contactor KM1. The submersible pump M2 is connected to the circuit breaker QF1 in sequence through the thermal element of the thermal overload relay FR2 and the main contact of the AC contactor KM2. One end of the input winding of the transformer T is connected to the fuse FU. The transformer T The other end of the input winding is connected to the neutral line N, one end of the output winding of the transformer T is connected to one end of the normally closed contact of the travel switch SQ2, the other end of the normally closed contact of the travel switch SQ2 is respectively connected to one end of the normally open contact of the travel switch SQ1 and one end of the first normally open contact KA-1 of the intermediate relay KA, the other end of the normally open contact of the travel switch SQ1 is respectively connected to one end of the coil of the intermediate relay KA and the other end of the first normally open contact KA-1, the other end of the output winding of the transformer T is connected to the other end of the coil of the intermediate relay KA, and the submersible pump switching control circuit is connected to the circuit breaker QF1 through the second normally open contact KA-2 of the intermediate relay KA and the fuse FU.
[0011] Furthermore, the submersible pump switching control circuit includes a conversion switch SA1 for switching the working modes of the submersible pump M1 and the submersible pump M2, and a conversion switch SA2 for switching the submersible pump M1 and the submersible pump M2, and the conversion switch SA1 is connected to the conversion switch SA2.
[0012] Furthermore, the manual end of the transfer switch SA1 is connected to the fuse FU, and the automatic end of the transfer switch SA1 is connected to the fuse FU via the second normally open contact KA-2 of the intermediate relay KA.
[0013] Furthermore, the submersible pump switching control circuit also includes a working indicator LED1 and an overload indicator LED2 for indicating the working state of the submersible pump M1, and a working indicator LED3 and an overload indicator LED4 for indicating the working state of the submersible pump M2.
[0014] The beneficial effects of the utility model are:
[0015] 1. In the utility model, the float rises and falls with the water level of the pool, and synchronously drives the baffle to move up and down through the connecting rod. The baffle triggers the travel switch SQ1 and the travel switch SQ2 according to the water level of the pool to control the opening and closing of the submersible pump, thereby realizing the drainage of the pool.
[0016] 2. In the present invention, the travel switch SQ1 and the travel switch SQ2 are separated from the float by a connecting rod, and a certain distance is set between the travel switch SQ1 and the travel switch SQ2 and the water pool to prevent the hot water and water vapor in the water pool from invading and causing damage to the travel switch SQ1 and the travel switch SQ2.
[0017] 3. In the present invention, a guide mechanism is provided to limit the up and down movement of the connecting rod, and at the same time, the up and down movement position of the baffle is limited by the connecting rod, so that the baffle can effectively abut against the travel switch SQ1 and the travel switch SQ2. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 A schematic diagram of the structure of the water tank liquid level switch device in this embodiment;
[0019] Figure 2 This is a circuit diagram of the submersible pump start and stop control circuit in this embodiment.
[0020] Reference numerals: float 1, connecting rod 2, baffle 3, travel switch SQ1 4, travel switch SQ2 5, mounting plate 6, mounting frame 7, guide mechanism 8, support rod 801, guide rod 802, guide ring 803, water pool 9. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] Embodiment: A water pool liquid level switch device, such as Figure 1 As shown, it includes a float 1, a connecting rod 2, a baffle 3, a travel switch SQ14, and a travel switch SQ25. One end of the connecting rod 2 is connected to the baffle 3, the baffle 3 is located between the travel switch SQ14 and the travel switch SQ25, and the travel switch SQ14 is located above the travel switch SQ25. The other end of the connecting rod 2 is connected to the float 1, and the float 1 floats on the water surface of a pool 9. The pool 9 is used to receive steam condensate from various workshops. A mounting plate 6 is installed at the edge of the pool 9, and a mounting frame 7 is installed on the mounting plate 6. The travel switch SQ14 and the travel switch SQ25 are installed on the mounting frame 7. The baffle 3 contacts the travel switch SQ14 and the travel switch SQ25 through the buoyancy of the float 1 to control the opening and closing of the submersible pump; wherein, the model of the travel switch SQ14 and the travel switch SQ25 are both YBLX-JW2 / 11.
[0023] The travel switch SQ14 and the travel switch SQ25 are combined to form a trigger switch for opening and closing the submersible pump, and the connecting rod 2 is used to separate it from the float 1 to prevent the hot water and water vapor in the pool 9 from invading and causing damage to the travel switch SQ14 and the travel switch SQ25. The travel switch SQ14 and the travel switch SQ25 are installed on the mounting frame 7, and the mounting frame 7 has a certain height so that there is a certain distance between the travel switch SQ14 and the travel switch SQ25 and the pool 9 to prevent water vapor from invading.
[0024] Furthermore, the connecting rod 2 is connected to a guide mechanism 8 for guiding the up and down movement of the baffle 3. The guide mechanism 8 includes a support rod 801 and a guide rod 802. The support rod 801 is installed on the mounting plate 6. Two guide rods 802 are provided, which are respectively installed on the upper and lower parts of the support rod 801. A guide ring 803 is installed on each guide rod 802, and the connecting rod 2 passes through the two guide rings 803.
[0025] The guide mechanism 8 is provided to limit the up and down movement of the connecting rod 2, so that it can move longitudinally or move at a small angle. At the same time, the connecting rod 2 is used to limit the up and down movement position of the baffle 3, so that the baffle 3 can effectively abut against the travel switch SQ1 4 and the travel switch SQ2 5.
[0026] Further, such as Figure 2As shown, the on-off control circuit of the submersible pump includes a circuit breaker QF1, a submersible pump M1, a submersible pump M2, a submersible pump switching control circuit, a fuse FU, an AC contactor KM1, an AC contactor KM2, an intermediate relay KA, a thermal overload relay FR1, a thermal overload relay FR2, and a transformer T. The submersible pump M1 is connected to the circuit breaker QF1 through the thermal element of the thermal overload relay FR1 and the main contact of the AC contactor KM1 in sequence. The submersible pump M2 is connected to the circuit breaker QF1 through the thermal element of the thermal overload relay FR2 and the main contact of the AC contactor KM2 in sequence. The circuit breaker QF1 is used to connect three-phase electricity. One end of the input winding of the transformer T is connected to the fuse FU, the other end of the input winding of the transformer T is connected to the neutral line N, one end of the output winding of the transformer T is connected to one end of the normally closed contact of the travel switch SQ2 5, and the travel switch SQ2 The other end of the normally closed contact is connected to one end of the normally open contact of the travel switch SQ14 and one end of the first normally open contact KA-1 of the intermediate relay KA, the other end of the normally open contact of the travel switch SQ14 is connected to one end of the coil of the intermediate relay KA and the other end of the first normally open contact KA-1, the other end of the output winding of the transformer T is connected to the other end of the coil of the intermediate relay KA, and the submersible pump switching control circuit is connected to the circuit breaker QF through the second normally open contact KA-2 of the intermediate relay KA and the fuse FU.
[0027] The submersible pump switching control circuit includes a conversion switch SA1, a conversion switch SA2, a power indicator light, a working indicator light LED1, an overload indicator light LED2, a working indicator light LED3, and an overload indicator light LED4.
[0028] Among them, the conversion switch SA1 is used to switch the working mode of the submersible pump M1 and the submersible pump M2, and includes three gears, specifically: the "manual" gear formed by the combination of the manual end and the connection end, the "stop" gear formed by the combination of the stop end and the connection end, and the "automatic" gear formed by the combination of the automatic end and the connection end.
[0029] The conversion switch SA2 is used for switching between the submersible pump M1 and the submersible pump M2, and includes three gears, specifically: the "submersible pump M1" gear formed by the combination of the submersible pump M1 end and the connecting end, the "stop" gear formed by the combination of the stop end and the connecting end, and the "submersible pump M2" gear formed by the combination of the submersible pump M2 end and the connecting end; the conversion switch SA2 is connected to the conversion switch SA1, that is, the connecting end of the conversion switch SA2 is connected to the connecting end of the conversion switch SA1.
[0030] The manual end of the transfer switch SA1 is connected to the fuse FU, and the automatic end of the transfer switch SA1 is connected to the fuse FU through the second normally open contact KA-2 of the intermediate relay KA.
[0031] The two ends of the power indicator light are connected to the fuse FU and the neutral line N respectively, and are used to indicate the power supply status of the field control cabinet.
[0032] The working indicator light LED1 and the overload indicator light LED2 are used to indicate the working status of the submersible pump M1; wherein, the working indicator light LED1 and the coil of the AC contactor KM1 are connected in parallel between the submersible pump M1 end of the conversion switch SA2 and the normally closed contact of the thermal overload relay FR1; the overload indicator light LED2 is connected to the submersible pump M1 end of the conversion switch SA2 through the auxiliary normally closed contact of the AC contactor KM1.
[0033] The working indicator light LED3 and the overload indicator light LED4 are used to indicate the working status of the submersible pump M2; wherein, the working indicator light LED3 and the coil of the AC contactor KM2 are connected in parallel and connected between the submersible pump M2 end of the conversion switch SA2 and the normally closed contact of the thermal overload relay FR2; the overload indicator light LED4 is connected to the submersible pump M2 end of the conversion switch SA2 through the auxiliary normally closed contact of the AC contactor K2.
[0034] The normally open contact of the thermal overload relay FR1 and the normally open contact of the thermal overload relay FR2 are connected in parallel between the submersible pump M1 end and the submersible pump M2 end of the conversion switch SA2.
[0035] When in use, turn the conversion switch SA1 to the "automatic" position, turn the conversion switch SA2 to the "submersible pump M1" position (if the submersible pump M2 is needed, turn it to the "submersible pump M2" position), the main contact of the AC contactor KM1 is closed (if the submersible pump M2 is needed, the main contact of the AC contactor KM2 is closed), and the circuit breaker QF1 is closed;
[0036] When the water level of the pool 9 drops, the float 1 drops with the water level, and drives the baffle 3 to move down through the connecting rod 2, until the baffle 3 moves down to the travel switch SQ2 5 and abuts against the travel switch SQ2 5, the travel switch SQ2 5 changes from the normally closed state to the normally open state, disconnecting the circuit, and the submersible pump does not start;
[0037] When the water level of the pool 9 rises, the float 1 rises with the water level and drives the baffle 3 to move upward through the connecting rod 2. At this time, the travel switch SQ2 5 automatically returns to its initial state due to the departure of the baffle 3, changing from the normally open state to the normally closed state, preparing for starting the submersible pump;
[0038] When the baffle 3 moves up to the travel switch SQ1 4 and contacts the travel switch SQ1 4, the travel switch SQ1 4 changes from the normally open state to the normally closed state, the coil of the intermediate relay KA is energized, so that the first normally open contact KA-1 and the second normally open contact KA-2 of the intermediate relay KA are closed, the submersible pump M1 is energized and started, and the pool 9 is drained outward;
[0039] As the water level of pool 9 drops (the normal drainage of the submersible pump is greater than the steam condensate received by pool 9 from various workshops), the float 1 drops with the water level drop, and drives the baffle 3 to drop through the connecting rod 2. During this period, the first normally open contact KA-1 and the second normally open contact KA-2 of the intermediate relay KA remain closed, and the submersible pump drains normally;
[0040] When the baffle 3 moves down to the travel switch SQ25 and abuts against the travel switch SQ25, the travel switch SQ25 changes from a normally closed state to a normally open state, disconnecting the circuit and preventing the submersible pump from starting.
[0041] Preferably, when the baffle 3 triggers the travel switch SQ1 4, the water level of the corresponding pool 9 is the lower limit of the pool, and when the baffle 3 triggers the travel switch SQ2 5, the water level of the corresponding pool 9 is the upper limit of the pool.
[0042] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.
Claims
1. A water pool liquid level switch device, characterized in that: The invention comprises a float (1), a connecting rod (2), a baffle (3), a travel switch SQ1 (4), and a travel switch SQ2 (5), wherein one end of the connecting rod (2) is connected to the baffle (3), the baffle (3) is located between the travel switch SQ1 (4) and the travel switch SQ2 (5), and the travel switch SQ1 (4) is located above the travel switch SQ2 (5), the other end of the connecting rod (2) is connected to the float (1), the float (1) floats on the water surface of a pool (9), a mounting plate (6) is installed at the pool edge of the pool (9), a mounting frame (7) is installed on the mounting plate (6), the travel switch SQ1 (4) and the travel switch SQ2 (5) are installed on the mounting frame (7), and the baffle (3) contacts the travel switch SQ1 (4) and the travel switch SQ2 (5) through the buoyancy of the float (1) to control the opening and closing of the submersible pump.
2. A pool liquid level switch device according to claim 1, characterized in that: The connecting rod (2) is connected to a guide mechanism (8) for guiding the baffle (3) to move up and down, the guide mechanism (8) comprising a support rod (801) and a guide rod (802), the support rod (801) being mounted on a mounting plate (6), two guide rods (802) being provided, respectively mounted on the upper and lower parts of the support rod (801), each guide rod (802) being mounted with a guide ring (803), and the connecting rod (2) being arranged to pass through the two guide rings (803).
3. A pool liquid level switch device according to claim 1, characterized in that: The on-off control circuit of the submersible pump includes a circuit breaker QF1, a submersible pump M1, a submersible pump M2, a submersible pump switching control circuit, a fuse FU, an AC contactor KM1, an AC contactor KM2, an intermediate relay KA, a thermal overload relay FR1, a thermal overload relay FR2, and a transformer T. The submersible pump M1 is connected to the circuit breaker QF1 through the thermal element of the thermal overload relay FR1 and the main contact of the AC contactor KM1 in sequence, and the submersible pump M2 is connected to the circuit breaker QF1 through the thermal element of the thermal overload relay FR2 and the main contact of the AC contactor KM2 in sequence. One end of the input winding of the transformer T is connected to the fuse FU, and the other end of the input winding of the transformer T is connected to the The neutral line N is connected, one end of the output winding of the transformer T is connected to one end of the normally closed contact of the travel switch SQ2 (5), the other end of the normally closed contact of the travel switch SQ2 (5) is respectively connected to one end of the normally open contact of the travel switch SQ1 (4) and one end of the first normally open contact KA-1 of the intermediate relay KA, the other end of the normally open contact of the travel switch SQ1 (4) is respectively connected to one end of the coil of the intermediate relay KA and the other end of the first normally open contact KA-1, the other end of the output winding of the transformer T is connected to the other end of the coil of the intermediate relay KA, and the submersible pump switching control circuit is connected to the circuit breaker QF1 through the second normally open contact KA-2 of the intermediate relay KA and the fuse FU.
4. A water pool liquid level switch device according to claim 3, characterized in that: The submersible pump switching control circuit includes a conversion switch SA1 for switching the working modes of the submersible pump M1 and the submersible pump M2, and a conversion switch SA2 for switching the submersible pump M1 and the submersible pump M2. The conversion switch SA1 is connected to the conversion switch SA2.
5. A pool liquid level switch device according to claim 4, characterized in that: The manual end of the conversion switch SA1 is connected to the fuse FU, and the automatic end of the conversion switch SA1 is connected to the fuse FU through the second normally open contact KA-2 of the intermediate relay KA.
6. A water pool liquid level switch device according to claim 4, characterized in that: The submersible pump switching control circuit further includes a working indicator light LED1 and an overload indicator light LED2 for indicating the working state of the submersible pump M1, and a working indicator light LED3 and an overload indicator light LED4 for indicating the working state of the submersible pump M2.