Dosing equipment with bottom discharge heating function and waste heat boiler

Abstract

The embodiment of the invention 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

Technical Field

[0001] The embodiments of the present application relate to the field of waste heat recovery technology, and in particular to a dosing device with bottom discharge heating and a waste heat boiler. Background Art

[0002] Waste heat boilers are used during zinc concentrate roasting. To ensure the normal and stable operation of the boiler, the water quality of the boiler needs to be qualified. Long-term unqualified water quality may even cause accidents such as boiler leakage, damage or explosion. In order to make the water quality qualified, trisodium phosphate needs to be added to the water. Since trisodium phosphate is not easy to dissolve in low temperature weather and is easy to crystallize, it will cause the bottom drainage pipe of the dosing box to be blocked. Therefore, the dosing box needs to be improved. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] To this end, a first aspect of the present invention provides a dosing device with bottom row heating.

[0005] A second aspect of the present invention provides a waste heat boiler.

[0006] In view of this, according to a first aspect of an embodiment of the present application, a dosing device with bottom row heating is proposed, comprising:

[0007] A dosing component, the dosing component is used to prepare the solution, and the dosing box includes a bottom discharge pipe;

[0008] A stirring component, the stirring component acts inside the dosing component;

[0009] A heating component, the heating component includes an electric heating belt and a heat exchange pipe, and the electric heating belt is arranged at the bottom of the medicine adding box.

[0010] In a feasible embodiment, the drug adding component further includes:

[0011] A medicine adding box, wherein the medicine adding box is a hollow box;

[0012] A cover plate, the cover plate being arranged on the upper surface of the medicine adding box;

[0013] A medicine screen, the medicine screen is used to place solid medicine, the medicine screen is arranged on the cover plate, the opening of the medicine screen extends out of the cover plate, and the lower end of the medicine screen is immersed below the liquid level of the medicine adding box;

[0014] A water inlet pipe, which is arranged on one side of the medicine adding box;

[0015] A bottom discharge valve is arranged on the bottom discharge pipe.

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

[0017] An installation cavity, which is arranged on the upper side of the cover plate;

[0018] A stirring motor, which is arranged inside the installation 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 passes through the cover plate and extends into the chemical addition tank;

[0020] A stirring paddle, which is arranged at one end of the stirring rod extending into the chemical addition tank.

[0021] In a feasible implementation, the heat exchange pipeline is arranged on the periphery of the bottom discharge pipeline and downstream of the electric heating belt. A heat exchange medium flows inside the heat exchange pipeline, and the heat exchange pipeline is connected to an external heat supply assembly.

[0022] In a feasible implementation, the heating assembly further includes a temperature control device. The detection end of the temperature control device is arranged inside the bottom discharge pipeline, and the temperature control device is electrically connected to the electric heating belt.

[0023] In a feasible implementation, the heat exchange pipeline is a metal round pipe, and there are two heat exchange pipelines, which are respectively arranged on both sides of the bottom discharge pipeline.

[0024] In a feasible implementation, arc-shaped cavities are respectively arranged on both sides of the bottom discharge pipeline. A connecting pipe is arranged at one end of the arc-shaped cavity close to the chemical addition tank. The connecting pipe connects the two arc-shaped cavities, and the two arc-shaped cavities and the connecting pipe together form the heat exchange pipeline.

[0025] In a feasible implementation, the heat exchange pipeline is a rubber hose, and the heat exchange pipeline surrounds the bottom discharge pipeline;

[0026] The heat exchange pipeline and the bottom discharge pipeline are fixed by fixing parts.

[0027] According to the second aspect of the embodiments of the present application, a waste heat boiler is provided, including:

[0028] A waste heat boiler body;

[0029] An evaporator, which is arranged on the waste heat boiler body;

[0030] The chemical addition device with bottom discharge heating described in any one of the above, the bottom discharge pipeline is connected to the waste heat boiler body, and the heat exchange pipeline is connected to the evaporator.

[0031] In a feasible implementation, the evaporator has an exhaust pipe, and the exhaust pipe has two branch pipes, one of which communicates with the heat exchange pipe.

[0032] Compared with the prior art, the present invention at least includes the following beneficial effects: The embodiment of the present application provides a chemical dosing device, including a chemical dosing component, a stirring component, and a heating component. Among them, the chemical 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 agent. The trisodium phosphate agent can effectively reduce the water quality hardness and reduce the formation of water scale. However, when the temperature is low, the trisodium phosphate agent is not easily dissolved and is prone to crystallization, causing blockage of the bottom discharge pipe of the chemical dosing item.

[0033] Among them, the stirring component acts on the boiler water inside the chemical dosing device. The stirring component can effectively improve the reaction rate inside the chemical dosing component and improve the treatment efficiency of the boiler water. This setting can improve the reaction effect of the trisodium phosphate agent and reduce crystallization.

[0034] Among them, the heating component is arranged at the bottom discharge pipe of the chemical dosing component to heat the bottom discharge pipe, thereby heating the boiler water flowing through the bottom discharge pipe, further improving the reaction rate of the trisodium phosphate agent and avoiding crystallization.

[0035] During actual use, first inject the boiler water into the chemical dosing tank of the chemical dosing component, turn on the stirring component to make the boiler water fully react with the treatment reagent, discharge the fully reacted boiler water from the bottom discharge pipe to the waste heat boiler, and turn on the heating component when the weather is cold and the treatment reagent is not easily dissolved, which can effectively improve the dissolution efficiency of the trisodium phosphate agent, avoid crystallization, effectively avoid blockage of the bottom discharge pipe of the chemical dosing tank, and improve the stability and service life of the chemical dosing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0037] Figure 1 It is a structural block diagram of a chemical dosing device with bottom discharge heating provided by the present application;

[0038] Figure 2 It is a structural block diagram of the cross-section of a heat exchange pipe provided by the present application;

[0039] Figure 3 It is a front view structural block diagram of a heat exchange pipe provided by the present application.

[0040] Among them,Figures 1 - 3 The corresponding relationship between the reference numerals in the drawings and the component names is as follows:

[0041] 100, chemical dosing assembly; 200, stirring assembly; 300, heating assembly;

[0042] 110, chemical dosing tank; 120, bottom discharge pipe; 130, cover plate; 140, chemical agent sieve; 150, water inlet pipe; 160, bottom discharge valve;

[0043] 210, installation cavity; 220, stirring motor; 230, stirring rod; 240, stirring paddle;

[0044] 310, electric heating tape; 320, heat exchange pipe. Detailed implementation manners

[0045] In order to better understand the above technical solution, the technical solution of the embodiment of the present application will be described in detail below through the drawings and specific embodiments. It should be understood that the specific features in the embodiments of the present application and the embodiments are detailed descriptions of the technical solution of the embodiment of the present application, rather than limitations on the technical solution of the present application. Without conflict, the technical features in the embodiments of the present application and the embodiments can be combined with each other.

[0046] As Figure 1 shown, according to the first aspect of the embodiment of the present application, a chemical dosing device with bottom discharge and heating is provided, including: a chemical dosing assembly 100, the chemical dosing assembly 100 is used to configure a solution, and the chemical dosing tank 110 includes a bottom discharge pipe 120; a stirring assembly 200, the stirring assembly 200 acts inside the chemical dosing assembly 100; a heating assembly 300, the heating assembly 300 includes an electric heating tape 310 and a heat exchange pipe 320, and the electric heating tape 310 is arranged at the bottom of the chemical dosing tank 110.

[0047] The embodiment of the present application provides a chemical dosing device, including a chemical dosing assembly 100, a stirring assembly 200 and a heating assembly 300. Among them, the chemical dosing assembly 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 chemical agent. Trisodium phosphate chemical agent can effectively reduce the water quality hardness and reduce the formation of water scale. However, when the temperature is relatively low, trisodium phosphate chemical agent is not easy to dissolve and is easy to crystallize, resulting in blockage of the bottom discharge pipe 120 of the chemical dosing item.

[0048] Among them, the stirring assembly 200 acts on the boiler water inside the chemical dosing device. The stirring assembly 200 can effectively improve the reaction rate inside the chemical dosing assembly 100 and improve the treatment efficiency of the boiler water. This setting can improve the reaction effect of the trisodium phosphate chemical agent and reduce crystallization.

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

[0050] During actual use, firstly, the boiler water is injected into the dosing box 110 of the dosing component 100, and the stirring component 200 is turned on to allow the boiler water to fully react with the treatment agent, and the fully reacted boiler water is discharged from the bottom discharge pipe 120 to the waste heat boiler, and when the weather is cold and the treatment agent is not easy to dissolve, the heating component 300 is turned on to effectively improve the dissolution efficiency of the trisodium phosphate agent and avoid crystallization, thereby effectively avoiding blockage of the bottom discharge pipe 120 of the dosing box 110, and improving the stability and service life of the dosing equipment.

[0051] like Figure 1 As shown, the dosing assembly 100 also includes: the dosing box 110 is a hollow box; a cover plate 130, the cover plate 130 is arranged on the upper surface of the dosing box 110; a medicine screen 140, the medicine screen 140 is used to place solid medicine, the medicine screen 140 is arranged on the cover plate 130, the opening of the medicine screen 140 extends out of the cover plate 130, and the lower end of the medicine screen 140 is immersed below the liquid level of the dosing box 110; a water inlet pipe 150, the water inlet pipe 150 is arranged on one side of the dosing box 110; and a bottom discharge valve 160, the bottom discharge valve 160 is arranged on the bottom discharge pipe 120.

[0052] In this technical solution, the dosing assembly 100 further includes a cover plate 130, a medicine screen 140, a water inlet pipe 150 and a bottom discharge valve 160. The cover plate 130 is arranged on the upper surface of the dosing box 110, the water inlet pipe 150 is arranged on the side surface of the dosing box 110, the bottom discharge pipe 120 is arranged on the lower surface of the dosing box 110, the medicine screen 140 is arranged on the cover plate 130, and the medicine screen 140 is a frame with a grid-shaped side wall with an open upper surface.

[0053] During actual use, boiler water is added to the dosing box 110 through the water inlet pipe 150, trisodium phosphate is added to the reagent screen 140, and the lower end of the reagent screen 140 is immersed in the boiler water inside the dosing box 110, thereby achieving a full reaction of trisodium phosphate with the boiler water.

[0054] like Figure 1As shown, the stirring assembly 200 includes: an installation cavity 210, which is arranged on the upper side of the cover plate 130; a stirring motor 220, which is arranged inside the installation 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 the stirring rod 230 passes through the cover plate 130 and extends into the chemical dosing tank 110; and a stirring paddle 240, which is arranged at one end of the stirring rod 230 extending into the chemical dosing tank 110.

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

[0056] Among them, the installation cavity 210 is arranged on the upper surface of the cover plate 130, the stirring motor 220 is arranged inside the installation 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 chemical dosing tank 110, and a stirring paddle 240 is arranged at one end of the stirring rod 230 extending into the chemical dosing tank 110.

[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 setting improves the treatment efficiency of boiler water, thereby improving the efficiency of the chemical dosing equipment, and reducing the crystallization of trisodium phosphate to a certain extent.

[0059] As Figure 1 shown, the heat exchange pipeline 320 is arranged on the periphery of the bottom discharge pipeline 120 and downstream of the electric heating belt 310. There is a heat exchange medium flowing inside the heat exchange pipeline 320, and the heat exchange pipeline 320 is connected to an external heat supply assembly.

[0060] In this technical solution, the heat exchange pipeline 320 is arranged on the periphery of the bottom discharge pipeline 120, and heat exchange is carried out between the heat exchange medium inside the heat exchange pipeline 320 and the boiler water in the bottom discharge pipeline 120, so as to increase the temperature of the boiler water in the bottom discharge pipeline 120 and prevent blockage of the bottom discharge pipeline 120 caused by crystallization.

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

[0062] In this technical solution, the heating assembly 300 further includes a temperature control device. The detection end of the temperature control device is arranged inside the bottom discharge pipe 120. When the temperature control device detects that the temperature of the boiler water in the bottom discharge pipe 120 is lower than the threshold value, the temperature of the electric heating tape 310 should be increased. When the temperature control device detects that the temperature of the boiler water in the bottom discharge pipe 120 exceeds the threshold value, the temperature of the electric heating tape 310 can be decreased until the temperature of the boiler water is stabilized within the threshold range.

[0063] It can be understood that since the temperature of the boiler water gradually decreases in the bottom discharge pipe 120, the detection end of the temperature control device should be arranged at the end of the bottom discharge pipe 120.

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

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

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

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

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

[0069] Among them, in Embodiment 1, the heat exchange pipe 320 is a conventional metal pipe. There are two heat exchange pipes 320, and they are respectively arranged on both sides of the bottom discharge pipe 120.

[0070] The advantage of this embodiment is that the pipes adopted can be directly purchased without separate production. The disadvantage is that the heat exchange efficiency is low and the space for installing the heat exchange pipe 320 needs to be satisfied at the production site.

[0071] Among them, in Embodiment 2, the heat exchange pipe 320 is formed by arranging arc-shaped pipe cavities on both sides of the bottom discharge pipe 120 and connecting the two arc-shaped pipe cavities. The heat exchange medium flows into from one side of the arc-shaped pipe cavity and 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 occupied, and more flexible installation. The disadvantage of this embodiment is that the special-shaped pipe formed by the bottom discharge pipe 120 and the heat exchange pipe 320 needs to be separately molded and produced, increasing the production cost.

[0073] Among them, in Embodiment 3, the heat exchange pipe 320 is a rubber hose and is spirally wound around the bottom discharge 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 occupied, and the rubber hose is also convenient to purchase. The disadvantage is that the stability of the rubber hose is lower than that of the metal pipe.

[0075] In the actual use process, the embodiment can be selected according to the actual production conditions.

[0076] According to the second aspect of the embodiments of the present application, a waste heat boiler is provided, including: a waste heat boiler body; an evaporator, the evaporator is arranged on the waste heat boiler body; the bottom discharge dosing device with heating as described in any one of the above, the bottom discharge pipe 120 is communicated with the waste heat boiler body, and the heat exchange pipe 320 is communicated with the evaporator and the waste heat boiler body.

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

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

[0079] The equipment water of the waste heat boiler becomes steam through the evaporator. This steam is used as a heat medium for production. At the same time, the heat exchange pipe 320 is communicated with the evaporator, and a part of the steam generated by the evaporator flows into the heat exchange pipe 320 to realize the heating of the bottom discharge pipe 120.

[0080] This technical solution realizes the heating of the boiler water by diverting the steam produced by the evaporator, without additionally setting a heating device to heat the heat exchange medium. At the same time, the boiler water is preheated through the heat exchange pipe 320, which can reduce the heat required in the process of treating the boiler water into steam.

[0081] This setting minimizes the consumption of resources and avoids the waste of heat energy.

[0082] The steam releases heat and condenses into water through the heat exchange pipe 320, and returns to the waste heat boiler body through the heat exchange pipe 320, which can realize the recycling of the boiler water.

[0083] In the present invention, the terms "first", "second", "third" are for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "plural" means two or more, unless otherwise clearly defined. Terms such as "installed", "connected", "joined", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "joined" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0084] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0085] In the description of this specification, the descriptions of the terms "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0086] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A bottom row with heating medicine adding device, characterized in that, Comprising: A chemical dosing assembly for configuring a solution, the chemical dosing tank including a bottom discharge pipeline; A stirring assembly acting inside the chemical dosing assembly; A heating assembly including an electric heating tape and a heat exchange pipeline, the electric heating tape being disposed at the bottom of the chemical dosing tank.

2. The bottom row with heating and dosing equipment according to claim 1, characterized in that, The chemical dosing assembly further includes: The chemical dosing tank is a hollow box body; A cover plate disposed on the upper surface of the chemical dosing tank; A chemical agent separation screen for placing solid chemical agents, the chemical agent separation screen being disposed on the cover plate, the opening of the chemical agent separation screen extending out of the cover plate, and the lower end of the chemical agent separation screen being immersed below the liquid level of the chemical dosing tank; A water inlet pipe disposed on one side of the chemical dosing tank; A bottom discharge valve disposed on the bottom discharge pipeline.

3. The bottom row with heating medicine adding device according to claim 2, characterized in that, The stirring assembly includes: An installation cavity disposed above the cover plate; A stirring motor disposed inside the installation 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 chemical dosing tank; A stirring paddle disposed at the end of the stirring rod extending into the chemical dosing tank.

4. The bottom discharge and heated chemical dosing device according to claim 1, wherein: The heat exchange pipeline is disposed around the bottom discharge pipeline and downstream of the electric heating tape, a heat exchange medium flows inside the heat exchange pipeline, and the heat exchange pipeline communicates with an external heat supply assembly.

5. The bottom row with heating medicine adding device according to claim 1, characterized in that, The heating assembly further includes: A temperature control device, the detection end of which is disposed inside the bottom discharge pipeline, and the temperature control device is electrically connected to the electric heating tape.

6. The bottom discharge and heated chemical dosing device according to claim 4, wherein: The heat exchange pipeline is a metal round pipe, there are two heat exchange pipelines, and the two heat exchange pipelines are respectively disposed on both sides of the bottom discharge pipeline.

7. The bottom discharge and heated chemical dosing device according to claim 4, wherein: Arc-shaped cavities are respectively disposed on both sides of the bottom discharge pipeline, a connecting pipe is disposed at one end of the arc-shaped cavity close to the chemical dosing tank, the connecting pipe communicates the two arc-shaped cavities, and the two arc-shaped cavities and the connecting pipe together form the heat exchange pipeline.

8. The bottom discharge and heated chemical dosing device according to claim 4, wherein: The heat exchange pipeline is a rubber hose, and the heat exchange pipeline surrounds the bottom discharge pipeline; The heat exchange pipeline and the bottom discharge pipeline are fixed by fixing members.

9. A waste heat boiler, characterized in that, Comprising: A waste heat boiler body; An evaporator disposed on the waste heat boiler body; The bottom discharge and heated chemical dosing device according to any one of claims 1-8, the bottom discharge pipeline communicating with the waste heat boiler body, and the heat exchange pipeline communicating with the evaporator and the waste heat boiler body.

10. The waste heat boiler according to claim 9, wherein: The evaporator has an exhaust pipeline, the exhaust pipeline has two branch pipes, and one of the branch pipes communicates with the heat exchange pipeline.

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