Under-cabinet type automatic wastewater neutralizing device for laboratory

Abstract

The utility model provides an under-cabinet type automatic wastewater neutralizing device for a laboratory. The under-cabinet type automatic wastewater neutralizing device comprises a first wastewater tank, a second wastewater tank, an acid liquor box, an alkali liquor box and a controller, a wastewater inlet pipe is arranged at the top of the first wastewater tank, a first valve is arranged between the first wastewater tank and the second wastewater tank, a wastewater drainage pipe is arranged at the bottom of the second wastewater tank, a second valve is arranged on the wastewater drainage pipe, a first liquid level sensor is arranged in the first wastewater tank, and a second liquid level sensor is arranged in the second wastewater tank. A stirrer is arranged in the second wastewater tank, an electrode sensor is arranged in the second wastewater tank, an acid liquor box is connected with the interior of the second wastewater tank through an acid liquor filling pipe, an alkali liquor box is connected with the interior of the second wastewater tank through an alkali liquor filling pipe, an acid liquor filling pump is arranged on the acid liquor filling pipe, and an alkali liquor filling pump is arranged on the alkali liquor filling pipe. The pH value neutralizing device is used for pH value neutralizing treatment before the low-pollution-degree cleaning wastewater of the small laboratory is discharged.

Description

Technical Field

[0001] The utility model belongs to the technical field of wastewater treatment, in particular to an under-cabinet type automatic wastewater neutralization device for laboratories. Background Art

[0002] Laboratory wastewater refers to sewage that is directly discharged into the sewer without being treated or collected, or discharged into the sewer after dilution during the teaching and scientific research process. It mainly includes sewage from washing utensils, wastewater of non-target products produced during the experiment, waste liquid that is difficult to collect, and sewage that students accidentally pour into the sewer. The composition of wastewater is complex, containing acid and alkali liquids, heavy metal ions, toxic and harmful substances, and even highly toxic substances. The National College Safety Committee once calculated that the types of reagents involved in chemical and pharmaceutical laboratories can reach 6,000 to 10,000. Wastewater discharge is irregular, especially in scientific research laboratories. The types and quantities of discharge are not regular and reproducible. Utility Model Content

[0003] The utility model aims to solve the above technical problems and provides an under-cabinet wastewater automatic neutralization device for laboratories, which is used for pH value neutralization treatment of low-pollution cleaning wastewater in small laboratories before discharge.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An under-cabinet wastewater automatic neutralization device for use in a laboratory comprises a first wastewater tank, a second wastewater tank, an acid box, an alkali box, and a controller; a wastewater inlet pipe is provided on the top of the first wastewater tank, a first valve is provided between the first wastewater tank and the second wastewater tank, a wastewater drain pipe is provided at the bottom of the second wastewater tank, a second valve is provided on the wastewater drain pipe, a first liquid level sensor is provided inside the first wastewater tank, the first liquid level sensor is arranged in the middle and upper part of the first wastewater tank, a second liquid level sensor is provided inside the second wastewater tank, the second liquid level sensor is arranged in the middle part of the second wastewater tank, An agitator is provided in the second wastewater tank, an electrode sensor is provided in the second wastewater tank, the acid box is connected to the interior of the second wastewater tank through an acid filling pipe, the alkali box is connected to the interior of the second wastewater tank through an alkali filling pipe, an acid filling pump is provided on the acid filling pipe, and an alkali filling pump is provided on the alkali filling pipe. The first liquid level sensor and the second liquid level sensor are connected to the controller, the controller is connected to the first valve, the electrode sensor is connected to the controller, the acid filling pump and the alkali filling pump are connected to the controller, and the controller is connected to the second valve.

[0006] As a preferred technical solution, the first valve includes a valve body and an up-and-down translation assembly, wherein the up-and-down translation assembly is connected to the valve body and drives the valve body to move up and down.

[0007] As a preferred technical solution, the up and down translation assembly includes a magnet and an electromagnetic coil, the magnet is embedded in the outer wall of the first wastewater tank or the second wastewater tank, and the electromagnetic coil is arranged in the valve body.

[0008] As a preferred technical solution, the acid filling pump and the alkali filling pump are both peristaltic pumps, and the acid filling pump and the alkali filling pump are respectively connected to motors, and the motors are connected to a controller.

[0009] As a preferred technical solution, the acid box, the alkali box, the acid filling pipe, the alkali filling pipe, the acid filling pump, and the alkali filling pump are arranged above the second wastewater tank and higher than the second liquid level sensor, and the filling ports of the acid and alkali are at the top of the second wastewater tank.

[0010] After adopting the above technical solution, the utility model has the following advantages:

[0011] The utility model is an under-cabinet wastewater automatic neutralization device for use in laboratories. When the wastewater level in the first wastewater tank reaches the first liquid level sensor, the first valve is opened, and half of the wastewater in the first wastewater tank enters the second wastewater tank. When the wastewater level in the second wastewater tank reaches the second liquid level sensor, the first valve is closed, and the agitator in the second wastewater tank is opened to agitate the wastewater in the second wastewater tank. The pH value of the wastewater in the second wastewater tank is measured by an electrode sensor, and whether to add acid or alkali is determined according to the pH value. The controller sets a specified pH value and its allowable deviation. When the pH value of the second wastewater tank reaches the set requirement, the second valve is opened to release the treated wastewater.

[0012] The utility model of the under-cabinet wastewater automatic neutralization device for laboratories is arranged in the form of a box and can be installed under the laboratory cleaning table. It is used for the pH value neutralization treatment of low-pollution cleaning wastewater in small laboratories before discharge. It has a fast response and can treat and discharge wastewater in a timely manner. It does not require centralized treatment in a large neutralization tank, saving space and cost. In addition, when one wastewater automatic neutralization device is maintained, other wastewater automatic neutralization devices can also operate normally, and the laboratory does not need to be completely shut down. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of an under-cabinet automatic wastewater neutralization device for laboratory use. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] like Figure 1 As shown, the under-cabinet automatic wastewater neutralization device for laboratory use includes a first wastewater tank 1, a second wastewater tank 2, an acid liquid box 3, an alkali liquid box 4, and a controller 5.

[0016] A wastewater inlet pipe 6 is provided at the top of the first wastewater tank 1. A first valve 7 is provided between the first wastewater tank 1 and the second wastewater tank 2, and the first valve 7 is used to control the first wastewater tank 1 to transport wastewater to the second wastewater tank 2. A wastewater drain pipe 8 is provided at the bottom of the second wastewater tank 2. A second valve 9 is provided on the wastewater drain pipe 8.

[0017] The first valve 1 adopts the following structural form: the first valve 1 comprises a valve body and an up-and-down translation assembly. The valve body is made of polytetrafluoroethylene material, and the up-and-down translation assembly is connected to the valve body and drives the valve body to move up and down.

[0018] By adjusting the height of the valve body through the up-and-down translation assembly, the amount of wastewater stored in the first wastewater tank 1 can be controlled and changed: a partition 10 is arranged between the inner cavities of the first wastewater tank 1 and the second wastewater tank 2, and a through groove for wastewater to pass through is provided on the partition 10, and the through groove is completely covered by the valve body during the rising and falling processes; a wastewater through port is provided on the valve body, and the valve body realizes the opening and closing of the first valve 7 by controlling the opening and closing of the wastewater through port; when the valve body moves up and down, the wastewater through port moves up and down.

[0019] The up-down translation assembly is an electromagnetic up-down translation assembly, which includes a magnet 11 and an electromagnetic coil. The magnet 11 is embedded in the outer wall of the first wastewater tank 1 or the second wastewater tank 2 in a completely embedded form. The electromagnetic coil is arranged in the valve body. When the electromagnetic up-down translation assembly is energized, the valve body is driven to move up and down.

[0020] The second valve 9 is a solenoid valve, which makes it easier for the controller 5 to control the opening and closing of the second valve 9 .

[0021] A first liquid level sensor 12 is provided inside the first wastewater tank 1 and is disposed in the middle and upper part of the first wastewater tank 1. A second liquid level sensor 13 is provided inside the second wastewater tank 2 and is disposed in the middle part of the second wastewater tank 2.

[0022] The first liquid level sensor 12 and the second liquid level sensor 13 are connected to the controller 5 , and the controller 5 is connected to the first valve 7 . The controller 5 controls the opening and closing of the first valve 7 according to the liquid level signals transmitted by the first liquid level sensor 12 and the second liquid level sensor 13 .

[0023] A stirrer 14 for stirring wastewater is disposed in both the first wastewater tank 1 and the second wastewater tank 2 .

[0024] The second wastewater tank 1 is provided with an electrode sensor 15, which is used to detect the pH value of the wastewater. The electrode sensor 15 is also called a pH electrode, and the pH value is characterized by measuring the electrode potential. The potentiometric method can achieve continuous online measurement and process monitoring, and can obtain accurate and repeatable pH values.

[0025] The acid liquid box 3 is connected to the interior of the second wastewater tank 2 via an acid liquid filling pipe 16, and the alkali liquid box 4 is connected to the interior of the second wastewater tank 2 via an alkali liquid filling pipe 17. The acid liquid filling pipe 16 is provided with an acid liquid filling pump 18, and the alkali liquid filling pipe 17 is provided with an alkali liquid filling pump 19.

[0026] The acid filling pump 18 and the alkali filling pump 18 are both peristaltic pumps, and the acid filling pump 18 and the alkali filling pump 18 are respectively connected to motors, which are connected to a controller, and the motor is controlled by the controller to realize the opening and closing of the peristaltic pump and flow regulation. The acid and alkali are added in the form of peristaltic pumps to avoid corrosion of the electric mechanism and extend the service life. In order to avoid the acid box 3, the alkali box 4, the acid filling pipe 16, the alkali filling pipe 17, the acid filling pump 18, and the alkali filling pump 19 from being affected by wastewater corrosion, the acid box 3, the alkali box 4, the acid filling pipe 16, the alkali filling pipe 17, the acid filling pump 18, and the alkali filling pump 19 are arranged above the second wastewater tank 2, and higher than the second liquid level sensor 13, and the filling ports of the acid and alkali are at the top of the second wastewater tank 2.

[0027] The electrode sensor 15 is connected to the controller 5 , the acid filling pump 18 and the alkali filling pump 19 are connected to the controller 5 , and the controller 5 is connected to the second valve 9 .

[0028] When the wastewater level in the first wastewater tank 1 reaches the first liquid level sensor 12, the first valve 7 is opened, and half of the wastewater in the first wastewater tank 1 enters the second wastewater tank 2. When the wastewater level in the second wastewater tank 2 reaches the second liquid level sensor 13, the first valve 7 is closed, and the agitator 14 in the second wastewater tank 2 is opened to stir the wastewater in the second wastewater tank 2. The pH value of the wastewater in the second wastewater tank 2 is measured by the electrode sensor 15, and whether to add acid or alkali is determined according to the pH value. The controller 5 sets the specified pH value and its allowable deviation. When the pH value of the second wastewater tank 2 is neutralized and reaches the set requirements, the second valve 9 is opened to release the treated wastewater.

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0030] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An under-cabinet wastewater automatic neutralization device for use in laboratories, characterized in that: The invention comprises a first wastewater tank, a second wastewater tank, an acid box, an alkali box, and a controller; a wastewater inlet pipe is arranged on the top of the first wastewater tank, a first valve is arranged between the first wastewater tank and the second wastewater tank, a wastewater drain pipe is arranged at the bottom of the second wastewater tank, a second valve is arranged on the wastewater drain pipe, a first liquid level sensor is arranged inside the first wastewater tank, the first liquid level sensor is arranged at the middle and upper part of the first wastewater tank, a second liquid level sensor is arranged inside the second wastewater tank, the second liquid level sensor is arranged in the middle part of the second wastewater tank, and a stirring device is arranged inside the second wastewater tank. agitator, an electrode sensor is arranged in the second wastewater tank, the acid box is connected to the interior of the second wastewater tank through an acid filling pipe, the alkali box is connected to the interior of the second wastewater tank through an alkali filling pipe, an acid filling pump is arranged on the acid filling pipe, an alkali filling pump is arranged on the alkali filling pipe, the first liquid level sensor and the second liquid level sensor are connected to the controller, the controller is connected to the first valve, the electrode sensor is connected to the controller, the acid filling pump and the alkali filling pump are connected to the controller, and the controller is connected to the second valve.

2. The under-cabinet wastewater automatic neutralization device for laboratory use according to claim 1, characterized in that: The first valve comprises a valve body and an up-and-down translation assembly, wherein the up-and-down translation assembly is connected to the valve body and drives the valve body to move up and down.

3. The under-cabinet wastewater automatic neutralization device for laboratory use according to claim 2, characterized in that: The up-and-down translation assembly includes a magnet and an electromagnetic coil. The magnet is embedded in the outer wall of the first wastewater tank or the second wastewater tank, and the electromagnetic coil is arranged in the valve body.

4. The under-cabinet wastewater automatic neutralization device for laboratory use according to claim 1, characterized in that: The acid filling pump and the alkali filling pump are both peristaltic pumps, and the acid filling pump and the alkali filling pump are respectively connected to motors, and the motors are connected to a controller.

5. The under-cabinet wastewater automatic neutralization device for laboratory use according to claim 1, characterized in that: The acid box, alkali box, acid filling pipe, alkali filling pipe, acid filling pump and alkali filling pump are arranged above the second wastewater tank and higher than the second liquid level sensor. The filling ports of acid and alkali are at the top of the second wastewater tank.

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