Salt dissolving device for low-position salt adding of sodium hypochlorite generator

Abstract

The salt dissolving device comprises a salt dissolving box, an automatic water replenishing valve is arranged on the salt dissolving box, the automatic water replenishing valve is electrically connected with an automatic control system, a water outlet pipe is communicated with the salt dissolving box close to an opening portion of the salt dissolving box, the water outlet pipe is communicated with a salt adding box, and the salt adding box is electrically connected with the automatic control system. The salt dissolving box is communicated with a water inlet pipe, the water inlet pipe is communicated with a venturi tube, the venturi tube is communicated with a proportioner, and the proportioner is communicated with the salt adding box; a liquid level sensor B is also arranged on the salt dissolving box and is electrically connected with the automatic control system; smooth conveying of saline water is achieved, the problem of pipeline blockage is avoided as far as possible, supernatant of the salt dissolving box is used for conveying salt particles, salt and water in the system are fully mixed, the solution in the system tends to be saturated, and the concentration of the saline water output by the salt dissolving box is stable.

Description

Technical Field

[0001] The utility model relates to the technical field of sodium hypochlorite generators, in particular to a salt dissolving device used for adding salt at a low position of a sodium hypochlorite generator. Background Art

[0002] The electrolyte of the sodium hypochlorite generator is dilute brine with a salt concentration of 2-5%. Sodium hypochlorite solution is produced by electrolyzing dilute brine with a salt concentration of 2-5%. When the salt concentration of the dilute brine is 3%, the power consumption and salt consumption of producing sodium hypochlorite solution are relatively economical. The sodium hypochlorite solution produced by the equipment has a high and stable effective chlorine concentration.

[0003] In the prior art, there is a related patent application that discloses a precise sodium hypochlorite generator, such as the patent with announcement number CN217733287 U, which includes a quantitative box, a salt storage box, a salt dissolving box, and a diluted salt box; wherein a stirrer is installed on the salt dissolving box, a water inlet pipe is installed on the side of the salt dissolving box, a water inlet valve is installed on the water inlet pipe, an outlet valve is installed at the bottom of the diluted salt box, and a material level detection device is installed in the quantitative box, the salt dissolving box, and the diluted salt box.

[0004] The salt dissolving box needs to fully dissolve and mix the quantitatively added table salt and the quantitatively added softened water before proceeding to the next process. Generally, salt is added to the salt dissolving box by using salt particles to fuse hydraulically and transport them to the salt dissolving box through a pipeline. It is difficult to control the ratio of salt particles and water during the salt addition and transportation process in this way. When too many salt particles are mixed, it is easy to cause excessive pipeline resistance and pipeline blockage. When the water ratio is high, as more water is transported to the salt dissolving box and the liquid level in the salt dissolving box rises to a high level, the salt water mixture can no longer be added. The salt water needs to be used and the liquid level in the salt dissolving box needs to drop before it can be transported. This reduces the salt dissolving efficiency of the salt dissolving box and is not convenient for the subsequent processes. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a salt dissolving device for adding salt at a low position in a sodium hypochlorite generator.

[0006] The utility model is realized through the following technical solutions.

[0007] The utility model provides a salt dissolving device for low-level salt addition of a sodium hypochlorite generator, comprising a salt dissolving box, an automatic water replenishing valve is arranged on the salt dissolving box, the automatic water replenishing valve is electrically connected to an automatic control system, an opening of the salt dissolving box is connected to a water outlet pipe, the water outlet pipe is connected to a salt adding box, the salt dissolving box is connected to a water inlet pipe near the automatic water replenishing valve, the water inlet pipe is connected to a venturi tube, the venturi tube is connected to a proportioner, and the proportioner is connected to the salt adding box;

[0008] The salt dissolving box is also provided with a liquid level sensor B, and the liquid level sensor B and an automatic control system.

[0009] Preferably, the water outlet pipe is connected to a first circulation pipe, and one end of the first circulation pipe away from the water outlet pipe is connected to a salt adding tank.

[0010] Preferably, a brine flow regulating valve is provided on the first circulation pipe, and the brine flow regulating valve is electrically connected to an automatic control system.

[0011] Preferably, the water outlet pipe is connected to a second circulation pipe, and one end of the second circulation pipe away from the water outlet pipe is connected to the proportioner.

[0012] Preferably, a proportioning water flow regulating valve is provided on the second circulation pipe, and the proportioning water flow regulating valve is electrically connected to an automatic control system.

[0013] Preferably, the water outlet pipe is connected to a third circulation pipe, and one end of the third circulation pipe away from the water outlet pipe is connected to the Venturi tube.

[0014] Preferably, a pump is provided on the third circulation pipe, and the pump is electrically connected to an automatic control system.

[0015] Preferably, the bottom of the salt adding box is inclined.

[0016] Preferably, a liquid level sensor A is provided in the salt adding box, and the liquid level sensor A is electrically connected to the automatic control system.

[0017] The beneficial effects of the utility model are:

[0018] 1. When the liquid level sensor B detects that the liquid level in the salt dissolving tank is lower than the set liquid level in the salt dissolving tank, the liquid level sensor B transmits a signal to the automatic control system, and the automatic control system controls the automatic water replenishment valve to open to replenish water into the salt dissolving tank; when the liquid level in the salt dissolving tank exceeds the connection point of the outlet pipe, the supernatant in the upper part of the salt dissolving tank is diverted from the outlet pipe to the first circulation pipe, the second circulation pipe and the third circulation pipe, and the water in the upper part of the salt dissolving tank is recycled, which will not cause the liquid level of the salt dissolving tank to overflow. The system can be started at any time and is not limited by the high liquid level of the salt dissolving tank.

[0019] 2. Part of the supernatant enters the salt adding tank from the first circulation pipe, and the liquid level in the salt adding tank is detected by the liquid level sensor A, so as to be fed back to the automatic control system so that the automatic control system controls the brine flow regulating valve. When the liquid level in the salt adding tank does not reach the maximum liquid level, the automatic control system controls the brine flow regulating valve to open, so that part of the supernatant enters the salt adding tank and mixes with the granular salt, so that the brine mixture is led from the salt adding tank to the proportioner;

[0020] At the same time, part of the supernatant enters the second circulation pipe, and the automatic control system controls the proportioning water flow regulating valve to open, so that part of the supernatant enters the proportioner and is mixed with the brine mixture entering the proportioner again, so that the brine mixture reaches a suitable proportion, thereby facilitating the smooth transportation of the brine mixture and avoiding the problem of pipeline blockage as much as possible;

[0021] Some of the supernatant also enters the Venturi tube from the third circulation pipe. The supernatant in the pipe is pressurized by a pump, so that the supernatant entering the Venturi tube produces negative pressure, which helps to drive the brine mixture in the proportioner into the Venturi tube, and then drive the brine mixture into the salt dissolving tank.

[0022] 3. The salt dissolving box can be located at a high place or far away. Solid salt only needs to be added to the low-lying salt adding box, which is not limited by the volume of the salt dissolving box. It saves manpower, reduces safety risks, realizes smooth transportation of the brine mixture, and avoids pipeline blockage as much as possible. The supernatant of the salt dissolving box is used to transport salt particles. The salt and water in the system are fully mixed, and the solution in the system tends to be saturated. The concentration of the brine output by the salt dissolving box is stable and fully automatically controlled. Only solid salt needs to be added manually. If it is equipped with an automatic solid salt adding device, it can run fully automatically. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model;

[0024] Figure 2 It is a schematic diagram of the process of the utility model;

[0025] Explanation of the accompanying drawings: 1-salt dissolving tank; 2-salt adding tank; 3-water outlet pipe; 4-proportioner; 5-venturi tube; 6-pump; 7-brine water flow regulating valve; 8-proportioning water flow regulating valve; 9-automatic water replenishment valve; 10-water inlet pipe; 11-liquid level sensor A; 12-liquid level sensor B; 13-automatic control system; 14-first circulation pipe; 15-second circulation pipe; 16-third circulation pipe; 17-pressure sensor. DETAILED DESCRIPTION

[0026] 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 of 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.

[0027] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] In the embodiments of this application, refer to Figure 1 and Figure 2 , including a salt dissolving box 1, an automatic water replenishing valve 9 is arranged on the salt dissolving box 1, and a liquid level sensor B12 is also arranged on the salt dissolving box 1. The automatic water replenishing valve 9 is electrically connected to an automatic control system 13. The automatic control system 13 adopts a PLC controller, and the core controller model is Siemens s7200smart. The automatic control system 13 is electrically connected to the liquid level sensor B12. When the liquid level sensor B12 detects that the liquid level in the salt dissolving box 1 is lower than the set liquid level in the salt dissolving box 1, the liquid level sensor B12 transmits a signal to the automatic control system 13, and the automatic control system 13 controls the automatic water replenishing valve 9 to open to replenish water into the salt dissolving box 1.

[0029] The salt dissolving box 1 is connected with a water outlet pipe 3 near its opening. The brine near the opening of the salt dissolving box 1 is called supernatant. When the liquid level in the salt dissolving box 1 exceeds the connection point of the water outlet pipe 3, it is convenient to guide the supernatant in the upper part of the salt dissolving box 1. The water outlet pipe 3 is connected with a salt adding box 2, so that the supernatant in the upper part of the salt dissolving box 1 enters the salt adding box 2 for recycling.

[0030] Reference Figure 1 The bottom of the salt adding tank 2 is inclined so that the supernatant and the granular salt can be mixed more fully to avoid excessive accumulation or clumping of the granular salt. It also makes it easier for the brine mixture in the salt adding tank 2 to enter the proportioner 4. A liquid level sensor A11 is provided in the salt adding tank 2. The liquid level sensor A11 is electrically connected to the automatic control system 13. The salt dissolving tank 1 is connected to a water inlet pipe 10. The water inlet pipe 10 is connected to a venturi tube 5. The venturi tube 5 is connected to the proportioner 4. The proportioner 4 is connected to the salt adding tank 2.

[0031] In the embodiments of this application, refer to Figure 1 and Figure 2 The outlet pipe 3 is connected to a first circulation pipe 14, and one end of the first circulation pipe 14 away from the outlet pipe 3 is connected to the salt adding tank 2; the middle part of the first circulation pipe 14 is connected to a brine flow regulating valve 7, and the brine flow regulating valve 7 is electrically connected to the automatic control system 13, so that the brine flow regulating valve 7 controls the first circulation pipe 14 to be in a flow or closed state, and can also adjust the flow of the supernatant through the brine flow regulating valve 7;

[0032] When the liquid level sensor A11 feeds back the liquid level signal in the salt adding tank 2 to the automatic control system 13, the automatic control system 13 controls the brine flow regulating valve 7 to open or close. When the liquid level in the salt adding tank 2 has not reached the set liquid level, the brine flow regulating valve 7 opens, and part of the supernatant enters the salt adding tank 2 from the first circulation pipe 14. When the liquid level in the salt adding tank 2 reaches the set liquid level, the brine flow regulating valve 7 closes, and no supernatant is introduced into the salt adding tank 2.

[0033] In the embodiments of this application, refer to Figure 1 and Figure 2 The outlet pipe 3 is connected to a second circulation pipe 15, and one end of the second circulation pipe 15 away from the outlet pipe 3 is connected to the proportioner 4; the middle pipe of the second circulation pipe 15 is connected to a proportioning water flow regulating valve 8, and the proportioning water flow regulating valve 8 is electrically connected to an automatic control system 13, so that the proportioning water flow regulating valve 8 controls the second circulation pipe 15 to be in a flow state or a closed state;

[0034] The automatic control system 13 controls the proportioning water flow regulating valve 8 to be opened or closed. The flow rate of the brine mixture flowing out of the salt adding tank 2 is affected by the amount of salt particles accumulated in the salt adding tank 2 and the flow rate of the brine, and the salt-water mixing ratio is uncertain. Therefore, when the brine mixture enters the proportioning device 4 from the salt adding tank 2, the automatic control system 13 controls the proportioning water flow regulating valve 8, so that part of the supernatant enters the proportioning device 4 from the second circulation pipe 15. By adjusting the flow rate of the proportioning water flow regulating valve 8, a certain amount of supernatant can be controlled to enter the proportioning device 4, and the brine mixture is mixed and proportioned again to make the brine mixture fully mixed, so that the mixed brine mixture can be easily introduced into the salt dissolving tank 1 to avoid pipeline blockage as much as possible.

[0035] In the embodiments of this application, refer to Figure 1 and Figure 2 , the outlet pipe 3 is connected to a third circulation pipe 16, and one end of the third circulation pipe 16 away from the outlet pipe 3 is connected to the venturi pipe 5; a pump 6 is arranged at the middle pipe of the third circulation pipe 16, and the pump 6 is electrically connected to the automatic control system 13, so that the pump 6 controls the third circulation pipe 16 to be in a flow or closed state, and the supernatant in the pipe is pressurized by the pump 6, so that the supernatant entering the venturi pipe 5 generates a negative pressure; at the same time, a pressure sensor 17 is also arranged on the water inlet pipe 10, and the pressure sensor 17 is electrically connected to the automatic control system 13. When the pressure sensor 17 detects that the water pressure is insufficient, the signal is fed back to the automatic control system 13, and the automatic control system 13 determines that the proportion of salt solids in the brine mixture in the pipeline is too large, controls the brine flow regulating valve 7 to reduce the brine flow, and controls the proportioning water flow regulating valve 8 to increase the proportioning water flow, so as to reduce the proportion of salt solids in the brine mixture in the pipeline, so as to facilitate the process transportation of the brine mixture.

[0036] The working principle of this embodiment is as follows: when the liquid level in the salt dissolving box 1 exceeds the set liquid level in the salt dissolving box 1, the supernatant in the upper part of the salt dissolving box 1 is diverted from the outlet pipe 3 to the first circulation pipe 14, the second circulation pipe 15 and the third circulation pipe 16;

[0037] Part of the supernatant enters the salt adding tank 2 from the first circulation pipe 14, and the liquid level in the salt adding tank 2 is detected by the liquid level sensor A11, and the automatic control system 13 is fed back to control the brine flow regulating valve 7. When the liquid level in the salt adding tank 2 does not reach the maximum liquid level, the automatic control system 13 controls the brine flow regulating valve 7 to open, so that part of the supernatant enters the salt adding tank 2 and mixes with the granular salt, so that the brine mixture is introduced from the salt adding tank 2 to the proportioner 4;

[0038] At the same time, part of the supernatant enters the second circulation pipe 15. When the automatic control system 13 controls the proportioning water flow regulating valve 8 to open, part of the supernatant enters the proportioner 4 and is mixed with the brine mixture entering the proportioner 4 again, so that the brine mixture reaches a suitable proportion, thereby facilitating smooth transportation of the brine mixture and avoiding pipeline blockage as much as possible.

[0039] Part of the supernatant enters the venturi tube 5 from the third circulation pipe 16, and the automatic control system 13 controls the pump 6 to pressurize the supernatant in the pipeline, so that the supernatant entering the venturi tube 5 is in a negative pressure state, which helps to drive the brine mixture in the proportioner 4 into the venturi tube 5. At the same time, the automatic control system 13 controls the brine flow regulating valve 7 to adjust the brine flow, and controls the proportioning water flow regulating valve 8 to adjust the proportioning water flow, so that the brine mixture in the pipeline reaches a suitable ratio, and then drives the brine mixture into the salt dissolving tank 1;

[0040] To achieve smooth transportation of brine and avoid pipeline blockage as much as possible, the supernatant of the salt dissolving box 1 is used to transport salt particles. The salt and water in the system are fully mixed, and the solution in the system tends to be saturated. The concentration of brine output by the salt dissolving box 1 is stable and fully automatically controlled. Only solid salt needs to be added manually. If it is equipped with an automatic solid salt adding device, it can run fully automatically.

[0041] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A salt dissolving device for low-level salt addition in a sodium hypochlorite generator, characterized in that: The invention comprises a salt dissolving box (1), wherein the salt dissolving box (1) is provided with an automatic water replenishing valve (9), wherein the automatic water replenishing valve (9) is electrically connected to an automatic control system (13), wherein an opening of the salt dissolving box (1) is connected to a water outlet pipe (3), wherein the water outlet pipe (3) is connected to a salt adding box (2), wherein a water inlet pipe (10) is connected to the salt dissolving box (1) near the automatic water replenishing valve (9), wherein the water inlet pipe (10) is connected to a venturi tube (5), wherein the venturi tube (5) is connected to a proportioning device (4), and the proportioning device (4) is connected to the salt adding box (2); The salt dissolving box (1) is also provided with a liquid level sensor B (12), and the liquid level sensor B (12) is electrically connected to the automatic control system (13).

2. A salt dissolving device for low-level salt addition in a sodium hypochlorite generator as claimed in claim 1, characterized in that: The water outlet pipe (3) is connected to a first circulation pipe (14), and one end of the first circulation pipe (14) away from the water outlet pipe (3) is connected to the salt adding tank (2).

3. A salt dissolving device for low-level salt addition in a sodium hypochlorite generator as claimed in claim 2, characterized in that: The first circulation pipe (14) is provided with a brine flow regulating valve (7), and the brine flow regulating valve (7) is electrically connected to the automatic control system (13).

4. A salt dissolving device for low-level salt addition in a sodium hypochlorite generator as claimed in claim 1, characterized in that: The water outlet pipe (3) is connected to a second circulation pipe (15), and one end of the second circulation pipe (15) away from the water outlet pipe (3) is connected to the proportioner (4).

5. A salt dissolving device for low-level salt addition in a sodium hypochlorite generator as claimed in claim 4, characterized in that: The second circulation pipe (15) is provided with a proportioning water flow regulating valve (8), and the proportioning water flow regulating valve (8) is electrically connected to an automatic control system (13).

6. A salt dissolving device for low-level salt addition in a sodium hypochlorite generator as claimed in claim 1, characterized in that: The water outlet pipe (3) is connected to a third circulation pipe (16), and one end of the third circulation pipe (16) away from the water outlet pipe (3) is connected to the Venturi pipe (5).

7. A salt dissolving device for low-level salt addition in a sodium hypochlorite generator as claimed in claim 6, characterized in that: The third circulation pipe (16) is provided with a pump (6), and the pump (6) is electrically connected to the automatic control system (13).

8. A salt dissolving device for low-level salt addition in a sodium hypochlorite generator as claimed in claim 1, characterized in that: The bottom of the salt adding box (2) is arranged in an inclined manner.

9. A salt dissolving device for low-level salt addition in a sodium hypochlorite generator as claimed in claim 1, characterized in that: The salt adding box (2) is provided with a liquid level sensor A (11), and the liquid level sensor A (11) is electrically connected to the automatic control system (13).

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