Dosing equipment with bottom discharge heating function and waste heat boiler

Abstract

The embodiment of the utility model discloses dosing equipment with a bottom discharge heating function and a waste heat boiler, the dosing equipment comprises a dosing assembly, a stirring assembly and a heating assembly, and the dosing assembly is used for adding boiler water and adding a reaction reagent to fully react with the boiler water. In the actual use process, firstly, boiler water is injected into a dosing box of the dosing assembly, the stirring assembly is started, the boiler water and the treatment agent are fully reacted, the boiler water after being fully reacted is discharged to the waste heat boiler from the bottom discharge pipeline, and the heating assembly is started when the weather is cold and the treatment agent is not easy to dissolve. Therefore, the dissolving efficiency of the trisodium phosphate medicament can be effectively improved, crystallization is avoided, blockage of a bottom discharge pipeline of the dosing box is effectively avoided, and the stability and the service life of dosing equipment are improved.

Description

A bottom-discharge heated dosing device and waste heat boiler Technical Field

[0001] This application relates to the field of waste heat recovery technology, and in particular to a bottom-heated dosing device and a waste heat boiler. Background Technology

[0002] Waste heat boilers are used in zinc concentrate roasting. To ensure the normal and stable operation of the boiler, it is necessary to control the boiler water quality to meet standards. Long-term substandard water quality may even lead to accidents such as boiler leakage, damage, or explosion. To meet the water quality standards, trisodium phosphate is added to the water. However, trisodium phosphate is not easily soluble in low temperatures and tends to crystallize, causing blockage in the bottom drain pipe of the dosing tank. Therefore, the dosing tank needs to be improved. Summary of the Invention

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0004] Therefore, the first aspect of this utility model provides a dosing device with bottom heating.

[0005] The second aspect of this utility model provides a waste heat boiler.

[0006] In view of this, a bottom-discharge heated dosing device is provided according to a first aspect of the embodiments of this application, comprising:

[0007] A dosing assembly for preparing a solution, the dosing assembly including a dosing tank, the dosing tank including a bottom drain pipe;

[0008] A stirring assembly that operates inside the dosing assembly;

[0009] A heating assembly, comprising an electric heating element and a heat exchange pipe, wherein the electric heating element is disposed at the bottom of the dosing tank.

[0010] In one feasible implementation, the dosing assembly further includes:

[0011] A dosing tank, wherein the dosing tank is a hollow box;

[0012] A cover plate, the cover plate being disposed on the upper surface of the dosing tank;

[0013] A pharmaceutical sieve is used to hold solid pharmaceuticals. The pharmaceutical sieve is disposed on the cover plate, with its opening extending out of the cover plate and its lower end immersed below the liquid surface of the dosing tank.

[0014] A water inlet pipe is located on one side of the dosing tank;

[0015] Bottom drain valve, which is installed in the bottom drain pipeline.

[0016] In one feasible implementation, the stirring assembly includes:

[0017] The mounting cavity is located on the upper side of the cover plate;

[0018] A stirring motor, wherein the stirring motor is disposed inside the mounting cavity;

[0019] A stirring rod, one end of which is connected to the output end of the stirring motor, and the other end of which extends through the cover plate into the dosing tank;

[0020] A stirring paddle is disposed at one end of the stirring rod that extends into the dosing tank.

[0021] In one feasible implementation, the heat exchange pipe is disposed around the bottom drain pipe and downstream of the electric heating belt, a heat exchange medium flows inside the heat exchange pipe, and the heat exchange pipe is connected to an external heating assembly.

[0022] In one feasible implementation, the heating assembly further includes a temperature control device, the detection end of which is disposed inside the bottom drain pipe, and the temperature control device is electrically connected to the electric heating belt.

[0023] In one feasible implementation, the heat exchange pipe is a metal circular pipe, and there are two heat exchange pipes, which are respectively arranged on both sides of the bottom drain pipe.

[0024] In one feasible implementation, arc-shaped cavities are respectively provided on both sides of the bottom drain pipe, and a connecting pipe is provided at the end of the arc-shaped cavity near the dosing tank. The connecting pipe connects the two arc-shaped cavities, and the two arc-shaped cavities and the connecting pipe together form a heat exchange pipeline.

[0025] In one feasible implementation, the heat exchange pipe is a rubber hose, and the heat exchange pipe is wrapped around the bottom drain pipe;

[0026] The heat exchange pipe and the bottom drain pipe are fixed together by fasteners.

[0027] A waste heat boiler is provided according to a second aspect of the embodiments of this application, comprising:

[0028] Waste heat boiler body;

[0029] An evaporator, wherein the evaporator is disposed on the waste heat boiler body;

[0030] The bottom-discharge heated dosing device described in any one of the above embodiments, wherein the bottom-discharge pipe is connected to the waste heat boiler body, and the heat exchange pipe is connected to the evaporator.

[0031] In one possible implementation, the evaporator has an exhaust pipe with two branches, one of which is connected to the heat exchange pipe.

[0032] Compared with the prior art, the present invention has at least the following beneficial effects: The embodiments of this application provide a dosing device, including a dosing component, a stirring component and a heating component. The dosing component is used to add boiler water and add a reaction reagent to fully react with the boiler water. In this embodiment, the reaction reagent used is trisodium phosphate. Trisodium phosphate can effectively reduce water hardness and reduce scale formation. However, at low temperatures, trisodium phosphate is not easy to dissolve and is prone to crystallization, causing blockage of the bottom drain pipe of the dosing device.

[0033] The stirring component acts on the boiler water inside the dosing equipment. The stirring component can effectively increase the reaction rate inside the dosing component and improve the treatment efficiency of the boiler water. This setting can improve the reaction effect of trisodium phosphate reagent and reduce crystallization.

[0034] The heating component is located at the bottom drain pipe of the dosing component to heat the bottom drain pipe, thereby heating the boiler water flowing through the bottom drain pipe, further increasing the reaction rate of the trisodium phosphate reagent and preventing crystallization.

[0035] In actual use, boiler water is first injected into the dosing tank of the dosing component, and the stirring component is turned on to allow the boiler water and the treatment agent to react fully. The fully reacted boiler water is then discharged from the bottom drain pipe to the waste heat boiler. When the weather is cold and the treatment agent is not easy to dissolve, the heating component is turned on, which can effectively improve the dissolution efficiency of trisodium phosphate agent, avoid crystallization, and thus avoid blockage of the bottom drain pipe of the dosing tank, thereby improving the stability and service life of the dosing equipment. Attached Figure Description

[0036] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0037] Figure 1 is a structural block diagram of a bottom-heated dosing device according to an embodiment of this application;

[0038] Figure 2 is a structural block diagram of a heat exchange pipe cross-section according to an embodiment of this application;

[0039] Figure 3 is a front view structural block diagram of a heat exchange pipe according to an embodiment of this application.

[0040] The correspondence between the reference numerals and component names in Figures 1-3 is as follows:

[0041] 100. Dosing assembly; 200. Stirring assembly; 300. Heating assembly;

[0042] 110. Dosing tank; 120. Bottom drain pipe; 130. Cover plate; 140. Chemical separator; 150. Inlet pipe; 160. Bottom drain valve;

[0043] 210. Mounting cavity; 220. Stirring motor; 230. Stirring rod; 240. Stirring paddle;

[0044] 310. Electric heating belt; 320. Heat exchange pipe. Detailed Implementation

[0045] To better understand the above technical solutions, the technical solutions of the embodiments of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of this application and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this application, rather than limitations on the technical solutions of this application. In the absence of conflict, the embodiments of this application and the technical features in the embodiments can be combined with each other.

[0046] As shown in Figure 1, a bottom-discharge heated dosing device is provided according to a first aspect of the present application, comprising: a dosing assembly 100 for preparing a solution, the dosing assembly 100 including a dosing tank 110, the dosing tank 110 including a bottom discharge pipe 120; a stirring assembly 200 acting inside the dosing assembly 100; and a heating assembly 300 including an electric heating belt 310 and a heat exchange pipe 320, the electric heating belt 310 being disposed at the bottom of the dosing tank 110.

[0047] This application provides a dosing device, including a dosing component 100, a stirring component 200, and a heating component 300. The dosing component 100 is used to add boiler water and add a reaction reagent to fully react with the boiler water. In this embodiment, the reaction reagent used is trisodium phosphate. Trisodium phosphate can effectively reduce water hardness and reduce scale formation. However, at low temperatures, trisodium phosphate is not easy to dissolve and is prone to crystallization, which can cause blockage of the bottom drain pipe 120 of the dosing device.

[0048] The stirring component 200 acts on the boiler water inside the dosing equipment. The stirring component 200 can effectively increase the reaction rate inside the dosing component 100 and improve the treatment efficiency of the boiler water. This setting can improve the reaction effect of trisodium phosphate reagent and reduce crystallization.

[0049] The heating component 300 is located at the bottom drain pipe 120 of the dosing component 100 to heat the bottom drain pipe 120, thereby heating the boiler water flowing through the bottom drain pipe 120, further increasing the reaction rate of the trisodium phosphate reagent and preventing crystallization.

[0050] In actual use, boiler water is first injected into the dosing tank 110 of the dosing component 100, and the stirring component 200 is turned on to allow the boiler water and the treatment agent to react fully. The fully reacted boiler water is then discharged to the waste heat boiler through the bottom drain pipe 120. When the weather is cold and the treatment agent is not easy to dissolve, the heating component 300 is turned on, which can effectively improve the dissolution efficiency of trisodium phosphate agent, avoid crystallization, and thus prevent blockage of the bottom drain pipe 120 of the dosing tank 110, thereby improving the stability and service life of the dosing equipment.

[0051] As shown in Figure 1, the dosing assembly 100 further includes: a hollow dosing tank 110; a cover plate 130 disposed on the upper surface of the dosing tank 110; a chemical separator 140 for holding solid chemicals, the chemical separator 140 being disposed on the cover plate 130, the opening of the chemical separator 140 extending out of the cover plate 130, and the lower end of the chemical separator 140 being immersed below the liquid surface of the dosing tank 110; a water inlet pipe 150 disposed on one side of the dosing tank 110; and a bottom drain valve 160 disposed on the bottom drain pipe 120.

[0052] In this technical solution, the dosing assembly 100 further includes a cover plate 130, a chemical separator 140, a water inlet pipe 150, and a bottom drain valve 160. The cover plate 130 is located on the upper surface of the dosing tank 110, the water inlet pipe 150 is located on the side surface of the dosing tank 110, the bottom drain pipe 120 is located on the lower surface of the dosing tank 110, and the chemical separator 140 is located on the cover plate 130. The chemical separator 140 is a frame with an open upper surface and a mesh-like sidewall.

[0053] In actual use, boiler water is added into the dosing tank 110 through the water inlet pipe 150, and trisodium phosphate is added into the chemical separator 140. The lower end of the chemical separator 140 is immersed in the boiler water inside the dosing tank 110, thereby achieving a full reaction between trisodium phosphate and boiler water.

[0054] As shown in Figure 1, the stirring assembly 200 includes: a mounting cavity 210 disposed on the upper side of the cover plate 130; a stirring motor 220 disposed inside the mounting cavity 210; a stirring rod 230, one end of which is connected to the output end of the stirring motor 220, and the other end of which extends through the cover plate 130 into the dosing tank 110; and a stirring paddle 240 disposed at the end of the stirring rod 230 that extends into the dosing tank 110.

[0055] In this technical solution, the stirring assembly 200 includes a mounting cavity 210, a stirring motor 220, a stirring rod 230, and a stirring paddle 240.

[0056] The mounting cavity 210 is located on the upper surface of the cover plate 130, the stirring motor 220 is located inside the mounting cavity 210, one end of the stirring rod 230 is connected to the output end of the stirring motor 220, the other end of the stirring rod 230 passes through the cover plate 130 and extends into the dosing tank 110, and the end of the stirring rod 230 extending into the dosing tank 110 is provided with a stirring paddle 240.

[0057] During the reaction of boiler water with trisodium phosphate, the stirring motor 220 can be turned on to drive the stirring paddle 240 to stir the boiler water.

[0058] This setup improves the efficiency of boiler water treatment, thereby increasing the efficiency of the dosing equipment and reducing trisodium phosphate crystallization to some extent.

[0059] As shown in Figure 1, the heat exchange pipe 320 is disposed on the periphery of the bottom drain pipe 120 and downstream of the electric heating belt 310. A heat exchange medium flows inside the heat exchange pipe 320, and the heat exchange pipe 320 is connected to an external heating component.

[0060] In this technical solution, the heat exchange pipe 320 is set on the periphery of the bottom drain pipe 120. The heat exchange medium inside the heat exchange pipe 320 exchanges heat with the boiler water in the bottom drain pipe 120, thereby increasing the temperature of the boiler water in the bottom drain pipe 120 and preventing crystallization from causing blockage of the bottom drain pipe 120.

[0061] As shown in Figure 1, the heating assembly 300 further includes a temperature control device, the detection end of which is located inside the bottom drain pipe 120, and the temperature control device is electrically connected to the electric heating belt 310.

[0062] In this technical solution, the heating component 300 also includes a temperature control device. The detection end of the temperature control device is located inside the bottom drain pipe 120. When the temperature control device detects that the temperature of the boiler water in the bottom drain pipe 120 is lower than the threshold, the temperature of the electric heating belt 310 should be increased. When the temperature control device detects that the temperature of the boiler water in the bottom drain pipe 120 exceeds the threshold, the temperature of the electric heating belt 310 can be decreased until the boiler water is stable within the threshold range.

[0063] It is understandable that, since the boiler water gradually loses temperature in the bottom drain pipe 120, the detection end of the temperature control device should be located at the end of the bottom drain pipe 120.

[0064] This technical solution can dynamically adjust the temperature of the electric heating belt 310, thereby adjusting the temperature of the boiler water in the bottom drain pipe 120 and improving the stability of the dosing equipment.

[0065] As shown in Figure 1, in Embodiment 1, the heat exchange pipe 320 is a metal circular pipe, and there are two heat exchange pipes 320, which are respectively arranged on both sides of the bottom drain pipe 120.

[0066] As shown in Figure 2, in Embodiment 2, arc-shaped cavities are respectively provided on both sides of the bottom discharge pipe 120. A connecting pipe is provided at the end of the arc-shaped cavity near the dosing tank 110. The connecting pipe connects the two arc-shaped cavities, and the two arc-shaped cavities and the connecting pipe together form the heat exchange pipe 320.

[0067] As shown in Figure 3, in Embodiment 3, the heat exchange pipe 320 is a rubber hose, and the heat exchange pipe 320 surrounds the bottom drain pipe 120; the heat exchange pipe 320 and the bottom drain pipe 120 are fixed by a fastener.

[0068] The above are three embodiments of the dosing equipment, specifically three implementation methods of the heat exchange pipe 320.

[0069] In Example 1, the heat exchange pipe 320 is a conventional metal pipe, and there are two heat exchange pipes 320, which are respectively set on both sides of the bottom drain pipe 120.

[0070] The advantage of this embodiment is that the pipes used can be purchased directly without separate production. The disadvantage is that the heat exchange efficiency is low and the space required for the installation of the heat exchange pipes at the production site is 320.

[0071] In Example 2, the heat exchange pipe 320 is provided with arc-shaped pipe cavities on both sides of the bottom drain pipe 120 and the two arc-shaped pipe cavities are connected. The heat exchange medium flows in from one side of the arc-shaped pipe cavity and then flows out from the other side of the arc-shaped pipe cavity.

[0072] The advantages of this embodiment are high heat exchange efficiency, small additional space occupation, and more flexible installation. The disadvantage of this embodiment is that the irregularly shaped pipe formed by the bottom drain pipe 120 and the heat exchange pipe 320 needs to be produced separately by mold opening, which increases the production cost.

[0073] In Example 3, the heat exchange pipe 320 is a rubber hose, which is spirally wound around the bottom drain pipe 120, and the heat exchange medium flows in the rubber hose.

[0074] The advantages of this embodiment are high heat exchange efficiency, small additional space required, and easy procurement of rubber hoses. The disadvantage is that the stability of rubber hoses is lower than that of metal pipes.

[0075] In actual use, the implementation examples can be selected based on the actual production conditions.

[0076] According to a second aspect of the embodiments of this application, a waste heat boiler is provided, comprising: a waste heat boiler body; an evaporator disposed on the waste heat boiler body; and a bottom-discharge heating dosing device as described in any one of the above, wherein the bottom-discharge pipe 120 is connected to the waste heat boiler body, and the heat exchange pipe 320 is connected to the evaporator and the waste heat boiler body.

[0077] The evaporator has an exhaust pipe with two branch pipes, one of which is connected to the heat exchange pipe 320.

[0078] In this technical solution, the dosing equipment provided in this application is applied to a waste heat boiler, wherein the boiler water treated by the dosing equipment is introduced into the waste heat boiler body as the equipment water of the waste heat boiler.

[0079] The waste heat boiler's equipment water is converted into steam through an evaporator. This steam is used as a heat medium in production. At the same time, the heat exchange pipe 320 is connected to the evaporator. A portion of the steam generated by the evaporator flows into the heat exchange pipe 320 to heat the bottom drain pipe 120.

[0080] This technical solution achieves boiler water heating by diverting the steam produced by the evaporator, eliminating the need for a separate heating device to heat the heat exchange medium. At the same time, the boiler water is preheated through the heat exchange pipe 320, which reduces the heat required for the boiler water to be processed into steam.

[0081] This setup minimizes resource consumption and avoids wasting thermal energy.

[0082] Steam releases heat and condenses into water through heat exchange pipe 320, and then flows back to the waste heat boiler body through heat exchange pipe 320, thus realizing the recycling of boiler water.

[0083] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0084] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0085] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0086] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A bottom-discharge heating dosing device, characterized in that, include: A dosing assembly for preparing a solution, the dosing assembly including a dosing tank including a bottom drain pipe; a stirring assembly acting inside the dosing assembly; and a heating assembly including an electric heating belt and a heat exchange pipe, the electric heating belt being disposed at the bottom of the dosing tank.

2. The bottom-discharge heated dosing device according to claim 1, characterized in that, The dosing assembly further includes: a hollow dosing tank; a cover plate disposed on the upper surface of the dosing tank; a reagent sieve for holding solid reagents, the reagent sieve being disposed on the cover plate, the opening of the reagent sieve extending out of the cover plate, and the lower end of the reagent sieve being immersed below the liquid surface of the dosing tank; a water inlet pipe disposed on one side of the dosing tank; and a bottom drain valve disposed on the bottom drain pipe.

3. The bottom-discharge heated dosing device according to claim 2, characterized in that, The stirring assembly includes: a mounting cavity disposed on the upper side of the cover plate; a stirring motor disposed inside the mounting cavity; a stirring rod, one end of which is connected to the output end of the stirring motor, and the other end of which passes through the cover plate and extends into the dosing tank; and a stirring paddle disposed at the end of the stirring rod that extends into the dosing tank.

4. The bottom-discharge heated dosing device according to claim 1, characterized in that: The heat exchange pipe is located around the bottom drain pipe and downstream of the electric heating belt. A heat exchange medium flows inside the heat exchange pipe, and the heat exchange pipe is connected to an external heating assembly.

5. The bottom-discharge heated dosing device according to claim 1, characterized in that, The heating assembly further includes a temperature control device, the detection end of which is located inside the bottom drain pipe, and the temperature control device is electrically connected to the electric heating belt.

6. The bottom-discharge heated dosing device according to claim 4, characterized in that: The heat exchange pipe is a metal round pipe, and there are two heat exchange pipes, which are respectively arranged on both sides of the bottom drain pipe.

7. The bottom-discharge heated dosing device according to claim 4, characterized in that: Arc-shaped cavities are provided on both sides of the bottom drain pipe. A connecting pipe is provided at the end of the arc-shaped cavity near the dosing tank. The connecting pipe connects the two arc-shaped cavities, and the two arc-shaped cavities and the connecting pipe together form a heat exchange pipeline.

8. The bottom-discharge heated dosing device according to claim 4, characterized in that: The heat exchange pipe is a rubber hose, which surrounds the bottom drain pipe; the heat exchange pipe and the bottom drain pipe are fixed together by fasteners.

9. A waste heat boiler, characterized in that, include: Waste heat boiler body; evaporator, the evaporator being disposed on the waste heat boiler body; a bottom-discharge heated dosing device as described in any one of claims 1-8, the bottom-discharge pipe being connected to the waste heat boiler body, and the heat exchange pipe being connected to the evaporator and the waste heat boiler body.

10. The waste heat boiler as described in claim 9, characterized in that: The evaporator has an exhaust pipe with two branch pipes, one of which is connected to the heat exchange pipe.

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