A scale and corrosion inhibitor adding device for industrial circulating cooling water treatment system

Abstract

The present invention discloses a scale inhibitor and corrosion inhibitor adding device for an industrial circulating cooling water treatment system, which includes: a liquid medicine tank, which is provided with three chambers, namely, a low-concentration medicine chamber, a medium-concentration medicine chamber, and a high-concentration medicine chamber; three metering pumps are provided, and are respectively connected to the three chambers in the liquid medicine tank by a medicine guide pipe. In the device of the present invention, the computer compiles the setting program into the PLC control module through software, and wakes up the electric control liquid detection valve and the water quality analyzer through the wake-up module, so that the electric control liquid detection valve guides the circulating water into the water quality analyzer, performs water quality analysis, and transmits the data results to the computer in real time, so that according to the water quality data, the PLC control module issues instructions to each agent injection mechanism, and adds appropriate agents to the circulating water system, so as to perform corresponding mitigation treatment operations according to the water quality status of the circulating water.

Description

Technical Field

[0001] The invention specifically relates to the technical field of circulating water treatment, in particular to a scale inhibitor and corrosion inhibitor adding device for an industrial circulating cooling water treatment system. Background Art

[0002] When the circulating cooling water system is running naturally, it will be affected by a variety of factors. For example, the hardness, alkalinity, pH value, concentration ratio, air temperature, ambient humidity and other factors of the circulating water may cause scaling or corrosion tendency in the system. Scaling is caused by the precipitation of calcium, magnesium ions and other scaling components in the water on the surface of the equipment to form hard scale. Scale will significantly reduce the heat exchange efficiency of the equipment and even cause damage to the equipment or unstable operation. For this reason, the scale inhibitor and corrosion inhibitor adding device can add scale inhibitor and corrosion inhibitor to the circulating water system to suppress the occurrence of these situations.

[0003] Existing scale and corrosion inhibitor addition devices generally inject agents into the circulating water system in a regular and quantitative manner. The solution is relatively blind. On the one hand, a one-time injection of the agent cannot completely integrate the agent into the circulating water body, and the precipitation of calcium, magnesium ions and other scaling components in some water bodies cannot be controlled, thereby reducing the effectiveness of the agent. On the other hand, there are certain hidden dangers in the regular addition of agents. If the scale accumulation in the pipes in the circulating water system is serious and cannot be alleviated in time, it will seriously damage the inner wall of the pipe and even cause rupture, thereby affecting the overall operation of the industry. Summary of the invention

[0004] To this end, the present invention proposes a scale inhibitor and corrosion inhibitor adding device suitable for an industrial circulating cooling water treatment system to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a scale inhibitor and corrosion inhibitor adding device for an industrial circulating cooling water treatment system, comprising:

[0006] The medicine liquid tank has three chambers, namely, a low concentration medicine chamber, a medium concentration medicine chamber, and a high concentration medicine chamber;

[0007] There are three metering pumps, which are connected to the three chambers in the medicine tank through the first medicine introduction pipe, and each metering pump is connected to the medicine injection mechanism through the second medicine introduction pipe;

[0008] A circulation pump, whose liquid inlet end is connected to a filter mechanism connected to the circulating water system through a third water pipe, and whose liquid outlet end is connected to one end of the first water pipe, and the other end of the first water pipe is sealed;

[0009] And second water pipes, the number of which is the same as the number of the drug injection mechanisms, one end of each of the second water pipes is connected to the first water pipe, the other end of each of the second water pipes is connected to the circulating water system, and each of the second water pipes is connected to the corresponding drug injection mechanism using a drain pipe.

[0010] Further, as a preference, an electrically controlled dosing valve is installed on one end of each of the second water pipes close to the first water pipe, and a second check valve is installed on each of the discharge pipes.

[0011] Furthermore, as a preference, the filtering mechanism also adopts a fourth water pipe to be connected to the water quality analyzer, and an electrically controlled liquid detection valve is installed on the fourth water pipe. A fifth water pipe is connected between the water quality analyzer and the end of the third water pipe, and a check valve is installed on the fifth water pipe.

[0012] Further, as a preference, the drug injection mechanism comprises:

[0013] The housing is provided with a liquid introduction cavity and a liquid storage cavity, and a liquid medicine flow passage is connected between the liquid introduction cavity and the liquid storage cavity, wherein a second drug introduction tube is connected to the liquid introduction cavity;

[0014] An autonomous blocking component, which is installed in the channel through which the liquid flows and is capable of controlling the communication state between the liquid introduction cavity and the liquid storage cavity;

[0015] A cartridge shell, which is fixed in the liquid storage cavity by a support rod, and a space is left between the cartridge shell and the inner bottom surface of the liquid storage cavity;

[0016] And a quantitative liquid discharge component is installed in the cylinder shell and driven by an electric cylinder fixed on the top of the shell, and the liquid discharge end of the quantitative liquid discharge component is connected with the discharge pipe through an infusion tube.

[0017] Further, as a preference, the quantitative liquid discharge assembly comprises:

[0018] A bottom cover is arranged in the cylindrical shell and fixed at the bottom opening of the cylindrical shell;

[0019] A plunger adopts a hollow structure, the plunger is adapted to be slidably disposed in the cylinder shell, and a second spring is connected between the plunger and the bottom cover;

[0020] And a compression shell, which is fixedly mounted on the top end of the plunger, a side opening of the compression shell is connected to a liquid infusion tube, and the compression shell is connected to the driving end of the electric cylinder.

[0021] Further, as a preference, an upper ball plug is provided in the compression shell, and the upper ball plug can seal the bottom opening of the compression shell, and a guide rod fixed on the inner top surface of the compression shell is inserted into the upper ball plug.

[0022] Further, as a preference, a lower ball plug is provided in the bottom cover, and the lower ball plug can seal the bottom opening of the cylinder shell, and a second guide rod fixed on the inner top surface of the bottom cover is inserted into the lower ball plug.

[0023] Further, preferably, the autonomous blocking component comprises:

[0024] A hollow disk fixed in the right end of the channel through which the liquid medicine flows;

[0025] A plug adapted to seal the left end of the channel through which the liquid medicine flows, wherein a telescopic rod is connected between the plug and the hollow disk;

[0026] And a spring 1, which is sleeved on the outer side of the telescopic rod, and the spring 1 is connected between the press plug and the hollow disk.

[0027] Further, preferably, a rubber pad is fixed on the left end surface of the press plug.

[0028] The present invention adopts the above technology and has the following beneficial effects compared with the existing technology:

[0029] 1. In the device of the present invention, the computer compiles the setting program into the PLC control module through software, and wakes up the electronically controlled liquid detection valve and the water quality analyzer through the wake-up module, so that the electronically controlled liquid detection valve guides the circulating water into the water quality analyzer to perform water quality analysis, and transmits the data results to the computer in real time. According to the water quality data, the PLC control module issues instructions to each reagent injection mechanism to add low-concentration reagents, medium-concentration reagents or high-concentration reagents into the circulating water system, so as to perform corresponding mitigation treatment operations according to the water quality status of the circulating water.

[0030] 2. The device of the present invention is provided with a quantitative liquid discharge assembly. When the electric cylinder drives the plunger to slide down, the spring is compressed and contracted, and the plunger pushes the liquid in the chamber upward. During this process, the liquid contacts the upper ball plug and pushes the upper ball plug open, that is, the compression shell is connected with the chamber, so that the liquid is input into the second water pipe along the direction of the infusion tube;

[0031] When the electric cylinder drives the plunger to slide upward, the spring returns. During this action, low pressure will be formed in the chamber, and the lower ball plug will be sucked upward. At the same time, the medicine in the medicine storage chamber will be sucked into the chamber, and the upper ball plug will also be affected by the downward suction force, so that the chamber remains airtight. Therefore, the low pressure produced in the chamber can only suck up the medicine in the medicine storage chamber, but cannot suck up the retained liquid in the infusion tube, so that the medicine can only be discharged externally. In this way, the above actions are repeated, so that the medicine is discharged into the circulating water in equal amounts for multiple times, which greatly improves the dispersion rate of the medicine in the circulating water. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of a scale inhibitor and corrosion inhibitor adding device for an industrial circulating cooling water treatment system;

[0033] Figure 2 for Figure 1 A magnified schematic diagram of part A;

[0034] Figure 3 This is a schematic diagram of the internal structure of a reagent injection mechanism in a scale and corrosion inhibitor adding device for an industrial circulating cooling water treatment system;

[0035] Figure 4 for Figure 3 A magnified schematic diagram of part B;

[0036] Figure 5 for Figure 3 A magnified schematic diagram of part C;

[0037] Figure 6 This is a system layout diagram of a scale and corrosion inhibitor addition device for an industrial circulating cooling water treatment system.

[0038] In the figure: 1, circulation pump; 2, first water pipe; 3, liquid medicine tank; 4, medicine concentration detector; 5, medicine introduction pipe 1; 6, metering pump; 7, electronically controlled medicine adding valve; 8, medicine injection mechanism; 9, second water pipe; 10, drainage pipe; 11, filtering mechanism; 12, medicine introduction pipe 2; 13, third water pipe; 14, fourth water pipe; 15, water quality analyzer; 16, fifth water pipe; 17, check valve 1; 18, electronically controlled liquid detection valve; 801, pressure plug; 802, telescopic rod; 803, hollow Empty plate; 804, electric cylinder; 805, shell; 806, infusion tube; 807, cylinder shell; 808, spring one; 809, plunger; 810, guide rod one; 811, upper ball plug; 812, compression shell; 801, compression plug; 802, telescopic rod; 803, hollow plate; 804, electric cylinder; 805, shell; 806, infusion tube; 807, cylinder shell; 808, spring one; 809, plunger; 810, guide rod one; 811, upper ball plug; 812, compression shell. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Example: Please see the attached Figure 1-6The present invention provides a technical solution: a scale inhibitor and corrosion inhibitor adding device for an industrial circulating cooling water treatment system, comprising:

[0041] The medicine liquid tank 3 is provided with three chambers, namely, a low concentration medicine chamber, a medium concentration medicine chamber, and a high concentration medicine chamber;

[0042] Three metering pumps 6 are provided, and are respectively connected to the three chambers in the medicine tank 3 by using a medicine introducing pipe 1 5, and each metering pump 6 is connected to the medicine injection mechanism 8 by using a medicine introducing pipe 2 12;

[0043] The three drug injection mechanisms 8 are respectively a low-concentration drug injection mechanism, a medium-concentration drug injection mechanism, and a high-concentration drug injection mechanism;

[0044] A circulating pump 1, whose liquid inlet end is connected to a filter mechanism 11 connected to a circulating water system through a third water pipe 13, and whose liquid outlet end is connected to one end of a first water pipe 2, and the other end of the first water pipe 2 is closed;

[0045] and second water pipes 9, the number of which is the same as that of the drug injection mechanisms 8, one end of each second water pipe 9 is connected to the first water pipe 2, the other end of each second water pipe 9 is connected to the circulating water system, and each second water pipe 9 is connected to the corresponding drug injection mechanism 8 through a drain pipe 10;

[0046] It should be added that three drug concentration detectors 4 are fixed on the drug liquid box 3 to perform real-time concentration detection on the drugs in the low-concentration drug chamber, the medium-concentration drug chamber, and the high-concentration drug chamber, respectively, to prevent the loss of molecules in the drugs and thus affect the drug concentration.

[0047] In this embodiment, an electric-controlled dosing valve 7 is installed on one end of each second water pipe 9 close to the first water pipe 2, and a check valve 2 is installed on each drain pipe 10;

[0048] The three electrically-controlled dosing valves 7 are respectively a first electrically-controlled dosing valve, a second electrically-controlled dosing valve, and a third electrically-controlled dosing valve.

[0049] In this embodiment, the filtering mechanism 11 also adopts a fourth water pipe 14 to be connected to the water quality analyzer 15, and an electrically controlled liquid detection valve 18 is installed on the fourth water pipe 14. A fifth water pipe 16 is connected between the water quality analyzer 15 and the end of the third water pipe 13, and a check valve 17 is installed on the fifth water pipe 16.

[0050] Please refer to the attached Figure 6The dosing device of the present invention also includes a computer, a PLC control module and a wake-up module, wherein the computer compiles the setting program into the PLC control module through software, and wakes up the electronically controlled liquid detection valve and the water quality analyzer through the wake-up module, so that the electronically controlled liquid detection valve guides the circulating water into the water quality analyzer to perform water quality analysis, and transmits the data results to the computer in real time. According to the water quality data, the PLC control module issues instructions to each agent injection mechanism to add low-concentration agents, medium-concentration agents or high-concentration agents to the circulating water system. Of course, if the water quality data is good and does not meet the low-concentration agent addition threshold, no drug is added.

[0051] In this embodiment, the drug injection mechanism 8 includes:

[0052] The housing 805 is provided with a liquid introduction cavity and a liquid storage cavity, and a liquid medicine flow passage is connected between the liquid introduction cavity and the liquid storage cavity, wherein a drug introduction tube 12 is connected to the liquid introduction cavity;

[0053] An autonomous plugging component is installed in the channel through which the liquid flows and is capable of controlling the communication state between the liquid introduction cavity and the liquid storage cavity;

[0054] The cylinder shell 807 is fixed in the liquid storage cavity by a support rod, and a space is left between the cylinder shell 807 and the inner bottom surface of the liquid storage cavity;

[0055] And a quantitative liquid discharge component, which is installed in the cylinder shell 807 and driven by an electric cylinder 804 fixed on the top of the shell 805, and the liquid discharge end of the quantitative liquid discharge component is connected to the discharge pipe 10 through an infusion tube 806.

[0056] In this embodiment, the quantitative liquid discharge component includes:

[0057] A bottom cover 813 is disposed in the cylindrical shell 807 and fixed at the bottom of the cylindrical shell 807;

[0058] The plunger 809 has a hollow structure and is slidably disposed in the cylinder shell 807. A spring 816 is connected between the plunger 809 and the bottom cover 813.

[0059] And a compression shell 812, which is fixedly mounted on the top end of the plunger 809, a side opening of the compression shell 812 is connected to the infusion tube 806, and the compression shell 812 is connected to the driving end of the electric cylinder 804.

[0060] In this embodiment, an upper ball plug 811 is provided in the compression shell 812, and the upper ball plug 811 can be sealed at the bottom of the compression shell 812, and a guide rod 810 fixed on the inner top surface of the compression shell 812 is inserted into the upper ball plug 811.

[0061] In this embodiment, a lower ball plug 815 is provided in the bottom cover 813, and the lower ball plug 815 can be sealed at the bottom opening of the cylinder shell 807, and a guide rod 814 fixed on the inner top surface of the bottom cover 813 is inserted into the lower ball plug 815.

[0062] It should be noted that initially, when there is no movement, the two ball plugs are respectively blocked at the bottom of the compression shell and the cylinder shell, that is, the two ball plugs cooperate to seal the chamber composed of the plunger 809 and the cylinder shell 807 to prevent the liquid in the chamber from flowing back;

[0063] Specifically, when the electric cylinder drives the plunger to slide down, the spring is compressed and contracted, and the plunger pushes the liquid medicine in the chamber upward. During this process, the liquid contacts the upper ball plug and pushes the upper ball plug open, that is, the compression shell is connected with the chamber, so that the liquid is input into the second water pipe along the direction of the infusion pipe 806;

[0064] When the electric cylinder drives the plunger to slide upward, the spring returns. During this action, low pressure will be formed in the chamber, and the lower ball plug will be sucked upward. At the same time, the medicine in the medicine storage chamber will be sucked into the chamber, and the upper ball plug will also be affected by the downward suction force, so that the chamber remains airtight. Therefore, the low pressure produced in the chamber can only suck up the medicine in the medicine storage chamber, but cannot suck up the retained liquid in the infusion tube, so that the medicine can only be discharged externally. In this way, the above actions are repeated, so that the medicine is discharged into the circulating water in equal amounts for multiple times, which greatly improves the dispersion rate of the medicine in the circulating water.

[0065] In this embodiment, the autonomous blocking component includes:

[0066] A hollow plate 803, which is fixed in the right end of the channel through which the liquid medicine flows;

[0067] A plug 801 is adapted to block the left end of the channel through which the liquid medicine flows. A telescopic rod 802 is connected between the plug 801 and the hollow plate 803, and the outer diameter of the plug 801 is larger than the diameter of the blocking port;

[0068] and a spring 1 808, which is sleeved on the outer side of the telescopic rod 802, and the spring 1 808 is connected between the press plug 801 and the hollow disk 803;

[0069] Specifically, when the metering pump is working, the pushing strength of the water introduced by it overcomes the elastic force of spring 1 808, causing the plunger 801 to move to the right, thereby opening the connecting channel between the liquid inlet chamber and the liquid storage chamber. When the metering pump stops and the medicinal liquid loses its pressurizing effect, the spring 1 808 recovers its elasticity and pushes the plunger 801 to the left end of the channel through which the medicinal liquid flows, thereby closing the connecting channel between the liquid inlet chamber and the liquid storage chamber.

[0070] In this embodiment, a rubber pad is fixed on the left end surface of the press plug 801 to ensure sealing.

[0071] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A scale inhibitor and corrosion inhibitor adding device for an industrial circulating cooling water treatment system, characterized in that: It comprises: a medicine liquid tank (3) having three chambers therein, namely, a low-concentration medicine chamber, a medium-concentration medicine chamber, and a high-concentration medicine chamber; three metering pumps (6) respectively connected to the three chambers in the medicine liquid tank (3) by using a medicine introduction pipe (5), and each metering pump (6) is connected to a medicine injection mechanism (8) by using a medicine introduction pipe (12); a circulation pump (1), whose liquid inlet end is connected to a filtering mechanism (11) connected to a circulating water system by means of a third water pipe (13), whose liquid outlet end is connected to one end of a first water pipe (2), and whose other end is closed; and second water pipes (9), whose number is the same as that of the medicine injection mechanism (8), one end of each of the second water pipes (9) is connected to the first water pipe (2), and the other end of each of the second water pipes (9) is connected to the circulating water system, and each of the second water pipes (9) is connected to the filter mechanism (11) by using a discharge pipe (10). The medicine injection mechanism (8) is provided with a liquid introduction cavity and a liquid storage cavity; an independent plugging component installed in the liquid flow passage and capable of controlling the communication state between the liquid introduction cavity and the liquid storage cavity; a cylinder shell (807) and a quantitative liquid discharge component; the quantitative liquid discharge component comprises a bottom cover (813) which is arranged in the cylinder shell (807) and fixed on the cylinder shell (807); At the bottom opening; a plunger (809) having a hollow structure, the plunger (809) being adapted to be slidably disposed in the cylinder shell (807), and a spring 2 (816) being connected between the plunger (809) and the bottom cover (813); and a pressure shell (812) being fixedly mounted on the top end of the plunger (809), a side opening of the pressure shell (812) being connected to an infusion tube (806), and the pressure shell (812) being connected to a driving end of the electric cylinder (804).

2. The scale inhibitor and corrosion inhibitor adding device for an industrial circulating cooling water treatment system according to claim 1, characterized in that: An electric-controlled dosing valve (7) is installed on one end of each of the second water pipes (9) close to the first water pipe (2), and a second check valve is installed on each of the discharge pipes (10).

3. The scale inhibitor and corrosion inhibitor adding device for an industrial circulating cooling water treatment system according to claim 2, characterized in that: The filtering mechanism (11) is also connected to the water quality analyzer (15) by a fourth water pipe (14), and an electrically controlled liquid detection valve (18) is installed on the fourth water pipe (14). A fifth water pipe (16) is connected between the water quality analyzer (15) and the end of the third water pipe (13), and a check valve (17) is installed on the fifth water pipe (16).

4. The scale inhibitor and corrosion inhibitor adding device for an industrial circulating cooling water treatment system according to claim 1, characterized in that: A channel for liquid medicine to flow through is connected between the liquid introduction chamber and the liquid storage chamber, wherein a second liquid introduction tube (12) is connected to the liquid introduction chamber; the cylinder shell (807) is fixed in the liquid storage chamber by a support rod, and a space is left between the cylinder shell (807) and the inner bottom surface of the liquid storage chamber; the electric cylinder (804) is fixed to the top of the outer shell (805), the quantitative liquid discharge component is installed in the cylinder shell (807) and is driven by the electric cylinder (804), and the liquid discharge end of the quantitative liquid discharge component is connected to the discharge pipe (10) by an infusion tube (806).

5. The scale inhibitor and corrosion inhibitor adding device for an industrial circulating cooling water treatment system according to claim 1, characterized in that: An upper ball plug (811) is provided in the compression shell (812), and the upper ball plug (811) can seal the bottom opening of the compression shell (812), and a guide rod (810) fixed on the inner top surface of the compression shell (812) is inserted into the upper ball plug (811).

6. The scale inhibitor and corrosion inhibitor adding device for an industrial circulating cooling water treatment system according to claim 5, characterized in that: A lower ball plug (815) is provided in the bottom cover (813), and the lower ball plug (815) is capable of blocking the bottom opening of the cylinder shell (807), and a second guide rod (814) fixed on the inner top surface of the bottom cover (813) is inserted into the lower ball plug (815).

7. The scale inhibitor and corrosion inhibitor adding device for an industrial circulating cooling water treatment system according to claim 6, characterized in that: The autonomous blocking component comprises: a hollow disk (803), which is fixed in the right end of the channel through which the medicine liquid flows; a plug (801), which is adapted to block the left end of the channel through which the medicine liquid flows, and a telescopic rod (802) is connected between the plug (801) and the hollow disk (803); and a spring (808), which is sleeved on the outer side of the telescopic rod (802), and the spring (808) is connected between the plug (801) and the hollow disk (803).

8. The scale inhibitor and corrosion inhibitor adding device for an industrial circulating cooling water treatment system according to claim 7, characterized in that: A rubber pad is fixed on the left end surface of the press plug (801).

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