Salt dissolving device for sodium hypochlorite generator

Abstract

The utility model relates to the technical field of sodium hypochlorite production equipment, in particular to a salt dissolving device for a sodium hypochlorite generator, which comprises a water softener, a salt feeding machine and a salt dissolving tank, a water pipe is communicated with the water softener and the salt dissolving tank, the center of the top of the salt dissolving tank is connected with a feeding pipe, and the feeding pipe is connected with the salt feeding machine; an inverted U-shaped saturated salt water discharging pipe is mounted in the salt dissolving tank and comprises an ascending section, a highest horizontal section and a descending section, the descending section is connected with a liquid discharging pipe through an L-shaped joint, and the liquid discharging pipe is communicated with a dilute salt water tank; the salt dissolving tank comprises a soft water layer and a salt layer from top to bottom, the highest horizontal section is located on the soft water layer, and a blow-down pipe is vertically installed on the highest horizontal section; a saturated brine inlet is formed in the bottom of the ascending section. The salt water filter is replaced by the inverted U-shaped saturated salt water discharging pipe, so that the equipment and maintenance cost is low. Meanwhile, an inverted U-shaped saturated salt water discharging mode is adopted, so that the dissolving time of the salt is prolonged, and the concentration of the supplied saturated salt water is more stable.

Description

Technical Field

[0001] This utility model relates to the technical field of sodium hypochlorite production equipment, specifically to a salt dissolving device for a sodium hypochlorite generator. Background Technology

[0002] Salt dissolution is a crucial unit system in a sodium hypochlorite generator system, typically consisting of a water softener, a salt feeder, and a salt dissolving tank. The water softener provides water free of calcium and magnesium ions for dissolving the salt. The salt feeder supplies solid salt to the salt dissolving tank, which is the container for dissolving the salt and is generally made of corrosion-resistant plastic such as food-grade PE. At the bottom of the salt dissolving tank, a salt layer support plate, a salt layer support plate filter, and a brine filter are installed. The brine filter is installed below the salt layer support plate, at the bottom of the salt dissolving tank. The brine filter directly leads the saturated brine to the dilute brine preparation system via a horizontal pipe at the bottom of the tank.

[0003] To ensure the purity of the saturated brine delivered from the salt dissolving tank, brine filters with a large mesh size (small pores) are generally used. However, after a period of operation, these filters are prone to clogging by impurities in the salt. Furthermore, the PVC or other plastic salt layer support plates can break down over time, affecting the operation of the subsequent dilute brine preparation system and even causing the sodium hypochlorite generator to shut down. Therefore, the process of cleaning and replacing the filter screens is tedious, time-consuming, and labor-intensive.

[0004] Based on this, the present invention designs a salt dissolving device for a sodium hypochlorite generator to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a salt dissolving device for a sodium hypochlorite generator that does not require a brine filter and is easy to maintain, thereby solving the problems in the prior art.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] A sodium hypochlorite generator salt dissolving device includes a water softener, a salt feeder, and a salt dissolving tank. A water pipe connects the water softener and the salt dissolving tank. A feed pipe is connected to the center of the top of the salt dissolving tank, and the feed pipe is connected to the salt feeder. An inverted U-shaped saturated brine outlet pipe is installed inside the salt dissolving tank. The inverted U-shaped saturated brine outlet pipe includes an ascending section, a highest horizontal section, and a descending section. The descending section is connected to a drain pipe via an L-shaped connector, and the drain pipe is connected to a dilute brine preparation tank. The salt dissolving tank includes a soft water layer and a salt layer from top to bottom. The highest horizontal section is located in the soft water layer, and a vent pipe is vertically installed on the highest horizontal section. A saturated brine inlet is opened at the bottom of the ascending section.

[0008] Furthermore, an electric valve is installed on the water pipe between the water softener and the salt dissolving tank.

[0009] Furthermore, a level switch is installed on the upper part of the inner wall of the salt dissolving tank.

[0010] Furthermore, the highest horizontal section is located within the soft water layer and is at least 200 mm away from the upper surface of the salt layer and at least 300 mm away from the horizontal plane of the soft water layer.

[0011] Furthermore, the salt feeding machine includes an inclined spiral feeding pipe, inside which a spiral feeder is installed, and the bottom of the spiral feeding pipe is connected to a salt bin.

[0012] Furthermore, the saturated brine inlets are located on both sides of the rising section, forming an inverted V shape, with a height of 50-100mm.

[0013] This utility model has the following beneficial effects:

[0014] Compared to traditional salt dissolving processes, this invention eliminates the salt layer support plate, salt layer support plate filter, and easily clogged brine filter and filter screen within the salt dissolving tank. It utilizes the liquid level difference to naturally separate the salt from the saturated brine, achieving a stable and continuous delivery of pure saturated brine to the dilute brine tank. This results in lower equipment cost and maintenance, while extending the equipment maintenance interval. Furthermore, the inverted U-shaped saturated brine discharge method prolongs the salt dissolving time, leading to a more stable concentration of the supplied saturated brine. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 Schematic diagram of the cross-sectional structure of the salt dissolving tank;

[0018] Figure 3 This is a schematic diagram of an inverted U-shaped saturated brine discharge pipe.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] 1. Water softener; 2. Salt feeder; 3. Salt dissolving tank; 4. Electric valve; 5. Liquid level switch; 6. Feed pipe; 7. Spiral feed pipe; 9. Inverted U-shaped saturated brine outlet pipe; 91. Rising section; 92. Highest horizontal section; 93. Falling section; 94. Drain pipe; 10. L-shaped connector; 11. Vent pipe; 12. Soft water layer; 13. Salt layer; 14. Saturated brine inlet. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. It should be understood that the terms "upper", "middle", "outer", "inner", "lower" etc., which indicate orientation or positional relationship, are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0022] The attached figures illustrate specific embodiments of this utility model, such as... Figures 1-2 As shown, this utility model is a salt dissolving device for a sodium hypochlorite generator, including a water softener 1, a salt feeder 2, and a salt dissolving tank 3. A water pipe connects the water softener 1 and the salt dissolving tank 3. An electric valve 4 is also installed on the water pipe between the water softener 1 and the salt dissolving tank 3 to control the water inlet. A liquid level switch 5 is installed on the upper part of the inner wall of the salt dissolving tank 3 to control the height of the soft water layer 12.

[0023] The salt feeding machine 2 includes a spiral feeding pipe 7 installed at an angle on the frame. A spiral feeder is installed inside the spiral feeding pipe 7, and the bottom of the spiral feeding pipe 7 is connected to a salt hopper for holding salt. The spiral feeder can be any type of spiral feeder available on the market. The upper end of the spiral feeding pipe 7 is fixedly connected to a vertical feeding pipe 6, which is located directly above the salt dissolving tank 3. The upper open end of the feeding pipe 6 is funnel-shaped. If outdoor use is required, a cover needs to be added to the top of the salt dissolving tank 3, and the two ends of the feeding pipe 6 are connected to the salt dissolving tank 3 and the spiral feeding pipe 7, respectively.

[0024] A U-shaped saturated brine outlet pipe 9 is placed in the salt dissolving tank 3. The U-shaped saturated brine outlet pipe 9 consists of an ascending section 91, a highest horizontal section 92, and a descending section 93 in the direction of water inlet. The bottom of the ascending section 91 is in vertical contact with the bottom plate of the tank, and the two sides of the contact end are symmetrically cut with inverted V-shaped saturated brine inlets 14. The opening height of the inverted V-shape is 50-100mm. The function of the two symmetrically arranged inverted V-shaped openings is to ensure the water inlet while allowing the pipe to stand upright at the bottom of the tank. A vent pipe 11 is vertically installed on the highest horizontal section 92. The vent pipe 11 extends upwards to connect with the outside of the tank and is open to the atmosphere, preventing siphoning from the inverted U-shaped saturated brine outlet pipe 9. The salt dissolving tank 3 consists of a soft water layer 12 and a salt layer 13 from top to bottom. The highest horizontal section 92 is located within the soft water layer 12, at least 200mm from the upper surface of the salt layer 13 and at least 300mm from the horizontal plane of the soft water layer 12. The descending section 93 is detachably connected to a drain pipe 94 via an L-shaped connector 10. The drain pipe 94 is located at the bottom of the salt dissolving tank 3 and connects to a dilute brine preparation tank, used for preparing dilute brine. A suitable support frame can also be installed at the bottom of the salt dissolving tank 3 to reinforce the inverted U-shaped saturated brine outlet pipe 9. If outdoor use is required, the outermost end of the vent pipe 11 needs to be bent downwards with the opening facing down to prevent rainwater or dust and other impurities from falling into the pipe.

[0025] The working principle of this utility model is as follows:

[0026] Solid salt is added to the salt dissolving tank 3 via the salt feeding machine 2, ensuring that the salt layer 13 is at least half the height of the tank. Then, the electric valve 4 is opened to inject softened water into the tank 3. When the level of the softened water layer 12 in the tank reaches the upper limit of the level switch 5, the electric valve 4 automatically stops the water supply. If the level does not reach the upper limit, water will automatically be added. The softened water added to the tank dissolves and permeates to the bottom of the tank as it passes through the salt layer 13, forming a saturated brine. Due to liquid pressure, both saturated brine and undissolved solid salt enter the rising section 91 of the inverted U-shaped saturated brine outlet pipe 9 through the saturated brine inlet 14. When the salt layer height in the pipe gradually becomes level with the salt layer height in the tank, the solid salt will no longer rise, but the saturated brine will still rise slowly under the effect of the liquid level difference. After passing through the highest level section 92, the saturated brine descends into the descending section 93 and flows into the dilute brine preparation tank from the drain pipe 94 for use by the dilute brine preparation system, thus achieving the technical effect of stably and continuously delivering pure saturated brine to the dilute brine preparation system.

[0027] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to specific implementation methods.

Claims

1. A sodium hypochlorite generator salt dissolving device, comprising a water softener (1), a salt feeder (2), and a salt dissolving tank (3), wherein a water pipe connects the water softener (1) and the salt dissolving tank (3), characterized in that: The top center of the salt dissolving tank (3) is connected to the feeding pipe (6), which is connected to the salt feeding machine (2); the salt dissolving tank (3) is equipped with an inverted U-shaped saturated brine discharge pipe (9), which includes an ascending section (91), a highest horizontal section (92), and a descending section (93). The descending section (93) is connected to the drain pipe (94) through an L-shaped connector (10), and the drain pipe (94) is connected to the dilute brine preparation tank; the salt dissolving tank (3) includes a soft water layer (12) and a salt layer (13) from top to bottom. The highest horizontal section (92) is located in the soft water layer (12), and a vent pipe (11) is installed vertically on the highest horizontal section (92); a saturated brine inlet (14) is opened at the bottom of the ascending section (91).

2. The sodium hypochlorite generator salt dissolving device according to claim 1, characterized in that: An electric valve (4) is installed on the water pipe between the water softener (1) and the salt dissolving tank (3).

3. The salt dissolving device for a sodium hypochlorite generator according to claim 1, characterized in that: A level switch (5) is installed on the upper part of the inner wall of the salt dissolving tank (3).

4. The salt dissolving device for a sodium hypochlorite generator according to claim 1, characterized in that: The highest horizontal section (92) is located within the soft water layer (12) and is at least 200 mm away from the upper surface of the salt layer (13) and at least 300 mm away from the horizontal plane of the soft water layer (12).

5. The sodium hypochlorite generator salt dissolving device according to claim 1, characterized in that: The salt feeding machine (2) includes an inclined spiral feeding pipe (7), a spiral feeder is installed inside the spiral feeding pipe (7), and the bottom of the spiral feeding pipe (7) is connected to the salt bin (8).

6. The salt dissolving device for a sodium hypochlorite generator according to claim 1, characterized in that: The saturated brine inlet (14) is located on both sides of the rising section (91), in an inverted V shape, with a height of 50-100 mm.

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