A spraying device for treating waste hydrochloric acid

Abstract

The utility model belongs to the technical field of waste hydrochloric acid treatment, and specifically relates to a spraying device for treating waste hydrochloric acid, including a waste hydrochloric acid storage tank, the bottom of which is connected to the water inlet of a hydrochloric acid pump, the water outlet of which is connected to the inlet section of a venturi tube in a suction assembly through a pipeline, the throat of which is connected to one end of a pumping tube, the other end of which is inserted into the bottom of a reagent storage tank, the port of the diffusion section of the venturi tube is connected to one end of an inner tube body in a self-stirring assembly, and a plurality of non-powered stirring blades are connected to the inner part of the inner tube body. Only the hydrochloric acid pump is required to work as the power for the flow of waste hydrochloric acid, and the use of the suction assembly can realize the suction of reagents in the reagent storage tank, and the reagents and waste hydrochloric acid are efficiently mixed and reacted when passing through the self-stirring assembly, which effectively reduces the operating energy consumption of the device; the method of sucking materials by flow rate difference effectively avoids the environmental pollution caused by the traditional feeding method.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste hydrochloric acid treatment, and specifically relates to a spraying device for treating waste hydrochloric acid. Background Art

[0002] There are many common methods for treating waste hydrochloric acid. Among them, the neutralization method and the precipitation method both require adding reagents (alkaline substances and precipitants) to the waste hydrochloric acid to neutralize the pH value of the waste hydrochloric acid or precipitate the metal ions and other impurities in the waste hydrochloric acid.

[0003] When the above two methods are used to treat waste hydrochloric acid, it is necessary to use a reaction pool or a reaction tank to collect the waste hydrochloric acid, and use a stirring device to stir and mix the waste hydrochloric acid and the added reagent, so that the waste hydrochloric acid and the reagent are fully mixed. This treatment method has the following problems:

[0004] 1. When adding solid reagents such as lime to waste hydrochloric acid, it is necessary to open a larger diameter feeding port (usually a manhole) on the tank body. At this time, the volatile hydrogen chloride gas will quickly escape from the feeding port, polluting the environment, and the lime itself will also escape and pollute the environment; in addition, due to the large amount of volatilization of waste hydrochloric acid, the traditional method of vacuuming the tank body and then extracting the reagent into the tank body through negative pressure is not applicable when treating waste hydrochloric acid;

[0005] 2. It requires the use of additional stirring devices and feeding devices, uses more electrical equipment, and consumes high energy for the operation of the device. Utility Model Content

[0006] In view of the above problems, the purpose of the utility model is to provide a spraying device for treating waste hydrochloric acid, so as to solve the problems that when adding solid reagents to the existing waste hydrochloric acid treatment equipment, the volatile hydrogen chloride gas and the reagents themselves will escape and pollute the environment, and the high power consumption of the device during operation.

[0007] To achieve the above purpose, the utility model adopts the following technical solution: an injection device for disposing of waste hydrochloric acid, comprising a waste hydrochloric acid storage tank, the bottom of which is connected to the water inlet of a hydrochloric acid pump, the water outlet of which is connected to the inlet section of a venturi tube in a suction assembly through a pipeline, the throat of the venturi tube is connected to one end of a suction pipe, the other end of which is inserted into the bottom of a reagent storage tank, the port of the diffusion section of the venturi tube is connected to one end of an inner tube body in a stirring assembly, and a plurality of unpowered stirring blades are connected to the inside of the inner tube body.

[0008] The beneficial effects of the utility model are as follows: only the hydrochloric acid pump is required to work as the power for the flow of waste hydrochloric acid, and the use of the suction component can realize the suction of the reagent in the reagent storage tank, and the reagent and the waste hydrochloric acid can be efficiently mixed and reacted when passing through the self-stirring component, which effectively reduces the operating energy consumption of the device; the method of sucking materials through flow rate difference effectively avoids the environmental pollution caused by the traditional feeding method.

[0009] In order to achieve control of the mixing ratio of waste hydrochloric acid and reagents in the self-stirring assembly;

[0010] As a further improvement of the above technical solution: a flow rate regulating component is arranged on the suction component, and the flow rate regulating component includes valve one and valve two, the valve one is installed on the pipe connecting the hydrochloric acid pump and the venturi tube, and the valve two is installed on the pipe connecting the extraction pipe and the venturi tube.

[0011] The beneficial effect of this improvement is that the operator can adjust the flow of waste hydrochloric acid and reagents by controlling the valve path size of valve one and valve two, thereby controlling the mixing ratio of waste hydrochloric acid and reagents in the self-stirring component.

[0012] In order to more accurately control the mixing ratio of waste hydrochloric acid and reagents;

[0013] As a further improvement of the above technical solution: a float flowmeter 1 is installed on the pipeline connecting the valve 1 and the hydrochloric acid pump, and a float flowmeter 2 is installed on the pipeline connecting the valve 2 and the venturi tube.

[0014] The beneficial effect of this improvement is that the operator can visually observe the flow of waste hydrochloric acid and reagents by observing the flow values ​​on float flowmeter 1 and float flowmeter 2, and then use valve 1 and valve 2 to more accurately adjust and control the mixing ratio of waste hydrochloric acid and reagents.

[0015] In order to effectively pump the reagents in the reagent tank;

[0016] As a further improvement of the above technical solution: an air inlet valve is installed on the top of the reagent storage tank, and the distance between the bottom end of the extraction pipe and the bottom surface of the reagent storage tank is not more than 1 cm.

[0017] The beneficial effect of this improvement is that the reagent in the reagent storage tank can be effectively sucked into the venturi tube through the extraction pipe.

[0018] In order to fully mix the waste hydrochloric acid and the reagents by using the unpowered stirring blade;

[0019] As a further improvement of the above technical solution: the unpowered stirring blade is a spiral plate structure whose axis is colinear with the axis of the inner tube body, and the angle between the two unpowered stirring blades connected up and down is 90 degrees.

[0020] The beneficial effect of this improvement is that when the waste hydrochloric acid and the reagent pass through the unpowered stirring blade, they are fully mixed, dispersed and homogenized by the shear force of the unpowered stirring blade.

[0021] In order to effectively ensure the safety of the waste hydrochloric acid treatment process;

[0022] As a further improvement of the above technical solution: an outer tube body is installed on the outer side of the inner tube body, a cooling jacket is formed between the inner tube body and the outer tube body, and cooling water pipelines are connected to the upper and lower ends of the cooling jacket.

[0023] The beneficial effect of this improvement is that during the mixing process, the waste hydrochloric acid releases heat, and the cooling water flowing in the cooling jacket cools the fluid in the inner tube body.

[0024] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the utility model;

[0026] Figure 2 It is a structural schematic diagram of the material suction component and the flow rate regulating component in the utility model;

[0027] Figure 3 It is a cross-sectional structural diagram of the self-stirring component in the utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the unpowered stirring blade in the utility model;

[0029] In the figure: 1. Waste hydrochloric acid storage tank; 2. Hydrochloric acid pump; 3. Suction assembly; 31. Venturi tube; 32. Extraction pipe; 4. Reagent storage tank; 5. Self-stirring assembly; 51. Inner tube body; 52. Outer tube body; 53. Cooling jacket; 54. Unpowered stirring blade; 6. Sampling valve; 7. Flow rate adjustment assembly; 71. Float flowmeter one; 72. Float flowmeter two; 73. Valve one; 74. Valve two; 75. Valve three. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present invention.

[0031] Embodiment 1:

[0032] like Figure 1—4 shows: a spraying device for treating waste hydrochloric acid, comprising a waste hydrochloric acid storage tank 1, the bottom of the waste hydrochloric acid storage tank 1 is connected to the water inlet of a hydrochloric acid pump 2, the water outlet of the hydrochloric acid pump 2 is connected to the inlet section of a venturi tube 31 in a suction assembly 3 through a pipeline, the throat of the venturi tube 31 is connected to one end of a pumping tube 32, the other end of the pumping tube 32 is inserted into the bottom of a reagent storage tank 4, the port of the diffusion section of the venturi tube 31 is connected to one end of an inner tube body 51 in a stirring assembly 5, a plurality of unpowered stirring blades 54 are connected to the inner part of the inner tube body 51, and the hydrochloric acid pump 2 only needs to work as the power for the flow of waste hydrochloric acid, and the use of the suction assembly 3 can realize the stirring of the reagent in the reagent storage tank 4. The suction of the reagent and the efficient mixing reaction of the reagent and the waste hydrochloric acid when passing through the self-stirring component 5 effectively reduce the operating energy consumption of the device; the method of sucking the material by the flow rate difference effectively avoids the environmental pollution caused by the traditional feeding method, and the suction component 3 is provided with a flow rate regulating component 7, and the flow rate regulating component 7 includes a valve 1 73 and a valve 2 74, the valve 1 73 is installed on the pipeline connecting the hydrochloric acid pump 2 and the venturi tube 31, and the valve 2 74 is installed on the pipeline connecting the extraction pipe 32 and the venturi tube 31. The operator can adjust the flow of the waste hydrochloric acid and the reagent by controlling the valve path size of the valve 1 73 and the valve 2 74, thereby controlling the waste hydrochloric acid and the reagent in the self-stirring component 5. The mixing ratio in the stirring assembly 5 is that a float flowmeter 1 71 is installed on the pipeline connecting the valve 1 73 and the hydrochloric acid pump 2, and a float flowmeter 2 72 is installed on the pipeline connecting the valve 2 74 and the venturi tube 31. The operator can observe the flow values ​​on the float flowmeter 1 71 and the float flowmeter 2 72 intuitively to observe the flow of waste hydrochloric acid and reagents, and then use the valve 1 73 and the valve 2 74 to more accurately adjust and control the mixing ratio of waste hydrochloric acid and reagents. The tank top of the reagent storage tank 4 is equipped with an air inlet valve, and the distance between the bottom end of the extraction pipe 32 and the inner bottom surface of the reagent storage tank 4 is not more than 1 cm. The reagent in the reagent storage tank 4 can be effectively discharged through the extraction pipe 32. The waste hydrochloric acid and the reagent are sucked into the venturi tube 31, the unpowered stirring blade 54 is a spiral plate structure whose axis is colinear with the axis of the inner tube body 51, and the angle between the two unpowered stirring blades 54 connected up and down is 90 degrees. When the waste hydrochloric acid and the reagent pass through the unpowered stirring blade 54, they are fully mixed, dispersed and homogenized by the shear force of the unpowered stirring blade 54. An outer tube body 52 is installed on the outer side of the inner tube body 51, and a cooling jacket 53 is formed between the inner tube body 51 and the outer tube body 52. ​​The upper and lower ends of the cooling jacket 53 are connected with cooling water pipelines. During the mixing process, the waste hydrochloric acid releases heat, and the cooling water flowing in the cooling jacket 53 realizes the cooling of the fluid in the inner tube body 51.

[0033] The working principle of the present technical solution is as follows: when the device is working, the hydrochloric acid pump 2 works to suck the waste hydrochloric acid in the waste hydrochloric acid storage tank 1, and transports it to the venturi tube 31 through a pipeline. After the waste hydrochloric acid flows through the throat of the venturi tube 31, it enters the diffusion section, the diameter of the pipeline gradually increases, the speed of the waste hydrochloric acid gradually decreases, and the pressure of the waste hydrochloric acid gradually recovers. Due to the inertia of the fluid, the fluid still maintains a certain negative pressure state in the diffusion section, so that the reagent in the reagent storage tank 4 is sucked into the venturi tube 31 through the extraction pipe 32, and flows into the inner tube body 51 together with the waste hydrochloric acid. When passing through the unpowered stirring blade 54, it is affected by the shear force of the unpowered stirring blade 54, and the reagent and the waste hydrochloric acid are automatically mixed, dispersed, and homogenized. In the process of mixing, the waste hydrochloric acid releases heat, and the cooling water flowing in the cooling jacket 53 realizes the inner tube body. The temperature of the fluid in the body 51 is lowered; when the reagent in the reagent storage tank 4 is liquid, the operator can observe the flow of the waste hydrochloric acid and the reagent through the float flowmeter 1 71 and the float flowmeter 2 72, and control the flow ratio of the waste hydrochloric acid and the reagent through the pre-measured pH value of the waste hydrochloric acid, so that the waste hydrochloric acid and the reagent in the self-stirring component 5 are mixed in a fixed ratio, and the waste hydrochloric acid can be adjusted to a suitable pH value more accurately; when the reagent in the reagent storage tank 4 is solid, the operator disassembles the float flowmeter 2 72 to directly connect the valve 2 74 to the venturi tube 31, and quickly samples the liquid behind the self-stirring component 5 through the sampling valve 6 to detect the pH value, and then manually adjusts the valve path size of the valve 2 74 to control the amount of solid reagent entering the self-stirring component 5 until the detected pH value reaches a suitable size.

[0034] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0035] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A spraying device for treating waste hydrochloric acid, characterized in that: The invention comprises a waste hydrochloric acid storage tank (1), wherein the bottom of the waste hydrochloric acid storage tank (1) is connected to the water inlet of a hydrochloric acid pump (2), the water outlet of the hydrochloric acid pump (2) is connected to the inlet section of a venturi tube (31) in a suction assembly (3) through a pipeline, the throat of the venturi tube (31) is connected to one end of a material extraction pipe (32), the other end of the material extraction pipe (32) is inserted into the bottom of a reagent storage tank (4), the port of the diffusion section of the venturi tube (31) is connected to one end of an inner tube body (51) in a stirring assembly (5), and a plurality of non-powered stirring blades (54) are connected to the inside of the inner tube body (51).

2. The spraying equipment for treating waste hydrochloric acid according to claim 1, characterized in that: The suction component (3) is provided with a flow rate regulating component (7), and the flow rate regulating component (7) comprises a valve 1 (73) and a valve 2 (74). The valve 1 (73) is installed on the pipeline connecting the hydrochloric acid pump (2) and the venturi tube (31), and the valve 2 (74) is installed on the pipeline connecting the extraction pipe (32) and the venturi tube (31).

3. The spraying equipment for treating waste hydrochloric acid according to claim 2, characterized in that: A float flowmeter 1 (71) is installed on the pipeline connecting the valve 1 (73) and the hydrochloric acid pump (2), and a float flowmeter 2 (72) is installed on the pipeline connecting the valve 2 (74) and the venturi tube (31).

4. The spraying equipment for treating waste hydrochloric acid according to claim 1, characterized in that: An air inlet valve is installed on the top of the reagent storage tank (4), and the distance between the bottom end of the extraction pipe (32) and the inner bottom surface of the reagent storage tank (4) is no more than 1 cm.

5. The spraying equipment for treating waste hydrochloric acid according to claim 1, characterized in that: The non-powered stirring blade (54) is a spiral plate structure whose axis is colinear with the axis of the inner tube body (51), and the angle between the two non-powered stirring blades (54) connected up and down is 90 degrees.

6. The spraying equipment for treating waste hydrochloric acid according to claim 1, characterized in that: An outer tube body (52) is installed on the outer side of the inner tube body (51), a cooling jacket (53) is formed between the inner tube body (51) and the outer tube body (52), and cooling water pipelines are connected at the upper and lower ends of the cooling jacket (53).

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