CN215949861U - Water pump capable of preventing machine seal from being burnt out due to idling - Google Patents
Water pump capable of preventing machine seal from being burnt out due to idling Download PDFInfo
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- CN215949861U CN215949861U CN202122133196.XU CN202122133196U CN215949861U CN 215949861 U CN215949861 U CN 215949861U CN 202122133196 U CN202122133196 U CN 202122133196U CN 215949861 U CN215949861 U CN 215949861U
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- pressure switch
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Abstract
The utility model discloses a water pump for preventing air-borne transducer-induced seal burning, which comprises a water pump, a main circuit and a control circuit, wherein the main circuit is connected with the water pump, the water pump is provided with a water inlet and a water outlet, the water outlet is provided with a pressure switch connected with the control circuit, the main circuit comprises a leakage protector, a main circuit fuse and a contactor, the leakage protector is electrically connected with the water pump, and the control circuit comprises a control circuit fuse, a start button, a stop button and a pressure switch normally-open contact. The utility model judges whether the water pump is pumped out or not by installing the pressure switch at the outlet of the water pump, can effectively prevent the pump from being pumped out in the occasions with lower control requirements, is a double protection mechanism in the occasions with high control requirements, and forms effective protection for the mechanical seal of the water pump.
Description
Technical Field
The utility model belongs to the technical field of water pumps, and particularly relates to a water pump capable of preventing machine seals from being burnt out due to air guide.
Background
Taking a centrifugal pump as an example, the water pump is indispensable in various modern enterprises, and generally has a low requirement on water pump control, and the water pump control idea is simple, namely, the simple start and stop control of the water pump is completed through a start button, a stop button, a contactor, a thermal relay and the like. On the occasion with higher control requirement, a liquid level sensor or a liquid level switch is additionally arranged on a water storage container, a liquid storage container and a pool to finish the logic control of the water pump, so that the pump is stopped at a low liquid level, and the situation that the mechanical seal is burnt out due to the fact that the water pump is pumped out after no water exists is prevented. The common faults of the enterprise water pumps are water shortage, machine sealing is burnt, and then the machine sealing position and the on-site leakage are caused. If the pumped liquid is flammable, explosive, toxic and the like, huge potential safety hazards are even brought.
A large amount of manpower and material resources are required to be invested for the mechanical sealing problem of the water pump every year due to enterprises. The enterprise production reduction loss caused by machine seal burning loss is immeasurable.
Therefore, we propose a water pump with a double protection mechanism to prevent the machine seal from burning out due to air-to-air conduction, which forms an effective protection for the machine seal of the water pump.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a water pump capable of preventing machine seals from being burnt out due to air guide, so as to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a water pump that air defense transduction caused quick-witted seal to burn out, includes the water pump, connects the main circuit and the control circuit of water pump, be equipped with water inlet and delivery port on the water pump, be equipped with the pressure switch who connects in control circuit on the delivery port, the main circuit includes earth-leakage protector, main circuit fuse and contactor with water pump electric connection, control circuit includes control circuit fuse, start button, stop button and pressure switch normally open contact.
Preferably, a pump fixing seat is fixedly arranged at the bottom of the water pump.
This arrangement utilizes a pump mount for securing the water pump.
Preferably, the water outlet nozzle of the water pump is respectively connected with the water outlet and the pressure switch through a tee joint.
The setting utilizes a tee joint to install a pressure switch, and judges whether the water pump is pumped out or not by installing the pressure switch at the position of the outlet of the water pump.
Preferably, the pressure switch normally open contact and the starting button are designed in series, and a contactor is further arranged on a circuit designed by the pressure switch normally open contact and the starting button in series.
The main circuit and the control circuit are separated by the arrangement, so that the cost is reduced, the cost is reduced due to the separation of the main circuit and the control circuit, the sealing performance of a product can be enhanced, and the service life and the service performance of the water pump are improved.
The utility model has the technical effects and advantages that: the air-guide-prevention machine seal burnout-preventing water pump judges whether the water pump is pumped out or not by installing a pressure switch at the outlet of the water pump, and as is well known, the pressure of the outlet of the water pump is sharply reduced when the water pump is pumped out, and the water pump is automatically controlled to stop by judging the pressure of the outlet. The pressure detection point can be reserved in the design and manufacturing stage of the water pump, the pressure switch is installed, or the existing water outlet pipeline of the water pump is simply transformed, and the tee joint installation pressure switch is additionally arranged. The pump evacuation can be effectively prevented in the occasions with lower control requirements, and the double-protection mechanism is also used in the occasions with high control requirements, so that the machine seal of the water pump is effectively protected.
The scheme has the advantages of simple structure, simple control circuit and low device cost, and can be completed by only simple modification at the design and manufacturing stage of the water pump. Can prevent the pump from empty burning the mechanical seal. The material of the pressure switch is selected according to the chemical property of the liquid pumped by the water pump, and the water cup with the structure is applicable to various places such as common liquid, acid, alkali, organic, toxic, inflammable and explosive places and the like.
Drawings
FIG. 1 is a schematic diagram of the structure of a water pump according to the present invention;
FIG. 2 is a diagram of a control circuit and a main circuit according to the present invention.
In the figure: A. a water inlet; B. a water outlet; C. a pressure switch; D. a pump holder; m, a water pump; QS, leakage protectors; FU1, main circuit fuse; KM and a contactor; FU2, control circuit fuse; SB1, start button; SB2, stop button; k1, pressure switch normally open contact.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model provides a water pump for preventing air-to-air transduction from causing machine seal burning out, which comprises a water pump M, a main circuit connected with the water pump M and a control circuit, the bottom of the water pump M is fixedly provided with a pump fixing seat D, the water pump M is provided with a water inlet A and a water outlet B, the water outlet nozzle of the water pump M is respectively connected with a water outlet B and a pressure switch C through a tee joint, the water outlet B is provided with the pressure switch C connected with a control circuit, the main circuit comprises a leakage protector QS electrically connected with the water pump M, a main circuit fuse FU1 and a contactor KM, the control circuit comprises a control circuit fuse FU2, a start button SB1, a stop button SB2 and a pressure switch normally open contact K1, the pressure switch normally open contact K1 and the series design of start button SB1, still be equipped with contactor KM on the circuit of pressure switch normally open contact K1 and the series design of start button SB 1.
Whether the water pump is evacuated is judged by installing a pressure switch C at the outlet of the water pump M, and as is known, the outlet pressure of the water pump M is sharply reduced when the water pump M is evacuated, and the water pump M is automatically controlled to stop by judging the outlet pressure. The pressure detection point can be reserved in the design and manufacturing stage of the water pump M, the pressure switch C is installed, or the existing water outlet pipeline of the water pump M is simply transformed, and the tee joint installation pressure switch C is additionally arranged.
The technical scheme of the water pump for preventing the machine seal from being burnt out caused by air guide is as follows:
1. the installation point of the pressure switch C is reserved in the design, manufacture and manufacturing stage of the water pump M, the management concept of combining design, manufacture and use of equipment management is met, and the water pump M can be sold integrally;
2. the range selection of the pressure switch C is based on the pressure greater than the outlet lift of the water pump M, the specific pressure switch C sets the pressure, the pressure is greater than 0 and smaller than the pump lift of the water pump M, the specific pressure switch C can obtain proper data through simple experiments for several times, the pressure material is judged based on the chemical property of the pumped liquid, a diaphragm body can be preset in front of a switch for acid liquid, the corrosion of the liquid to the pressure switch C is prevented, and only one group of normally open contacts is needed when the pressure switch C is in a type selection;
3. taking simple control of the water pump M as an example, the control circuit and the main circuit diagram are shown in the attached figure 2 of the specification;
4. by pressing the starting button SB 15-10S for a long time, after water is discharged from the water outlet of the water pump M, the starting button is released, the contactor KM is self-locked, the water outlet of the water pump M has pressure, the pressure is greater than the set pressure of the pressure switch C, the normally open contact K1 of the pressure switch is closed, and at the moment, the manual starting of the pump can be completed;
5. the pump can be stopped by pressing stop button SB 2;
6. when an accident happens, namely the pump M is not stopped in time when no water exists, the pump runs idle due to water shortage, the pressure at the outlet of the pump drops rapidly, when the pressure at the outlet of the pump is smaller than the set pressure of the pressure switch C, the normally open contact K1 of the pressure switch is converted into an open state from the early closed state again, and the pump stops automatically.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.
Claims (4)
1. The utility model provides a prevent that air traffic leads water pump that quick-witted seal burns out, includes water pump (M), connects the main circuit and the control circuit of water pump (M), its characterized in that: be equipped with water inlet (A) and delivery port (B) on water pump (M), be equipped with pressure switch (C) of connecting in control circuit on delivery port (B), the main circuit includes earth-leakage protector (QS), main circuit fuse (FU1) and contactor (KM) with water pump (M) electric connection, control circuit includes control circuit fuse (FU2), start button (SB1), stop button (SB2) and pressure switch normally open contact (K1).
2. The water pump for preventing the mechanical seal from being burnt out caused by air-fuel transmission according to claim 1, characterized in that: and a pump fixing seat (D) is fixedly arranged at the bottom of the water pump (M).
3. The water pump for preventing the mechanical seal from being burnt out caused by air-fuel transmission according to claim 1, characterized in that: the water outlet nozzle of the water pump (M) is respectively connected with the water outlet (B) and the pressure switch (C) through a tee joint.
4. The water pump for preventing the mechanical seal from being burnt out caused by air-fuel transmission according to claim 1, characterized in that: pressure switch normally open contact (K1) and start button (SB1) series design, still be equipped with contactor (KM) on pressure switch normally open contact (K1) and the circuit of start button (SB1) series design.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122133196.XU CN215949861U (en) | 2021-09-06 | 2021-09-06 | Water pump capable of preventing machine seal from being burnt out due to idling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122133196.XU CN215949861U (en) | 2021-09-06 | 2021-09-06 | Water pump capable of preventing machine seal from being burnt out due to idling |
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| Publication Number | Publication Date |
|---|---|
| CN215949861U true CN215949861U (en) | 2022-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122133196.XU Active CN215949861U (en) | 2021-09-06 | 2021-09-06 | Water pump capable of preventing machine seal from being burnt out due to idling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115405535A (en) * | 2022-08-26 | 2022-11-29 | 焦作市华康糖醇科技有限公司 | Protection method for mechanical seal of tetrafluoro pump |
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2021
- 2021-09-06 CN CN202122133196.XU patent/CN215949861U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115405535A (en) * | 2022-08-26 | 2022-11-29 | 焦作市华康糖醇科技有限公司 | Protection method for mechanical seal of tetrafluoro pump |
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