Automatic medicine adding and dissolving integrated device for kitchen wastewater pretreatment

Abstract

The utility model relates to an automatic medicine adding and dissolving integrated device for pretreatment of kitchen wastewater. The automatic medicine adding and dissolving integrated device comprises a medicine conveying screw conveyor, a medicine dissolving tank, an electric stirring mechanism and a medicine conveying pump, the medicine dissolving tank comprises a tank body and a conical hopper at the lower part, a top cover of the tank body is provided with a medicine inlet and a water inlet, the medicine inlet is connected and communicated with a discharge hole of the medicine conveying screw conveyor, a medicine outlet at the bottom of the conical hopper is connected and communicated with an inlet of the medicine conveying pump, and the lower part of the tank body is provided with a medicine sampling port; a plurality of spoilers which are vertically arranged and protrude inwards are arranged on the inner wall of the tank body in the circumferential direction, an outer coil pipe is arranged on the outer wall of the tank body, a medium inlet is formed in the upper portion of the outer coil pipe, and a medium outlet is formed in the bottom of the outer coil pipe; the electric stirring mechanism is vertically arranged on the medicine dissolving tank, and a stirring blade and an inclined blade which are arranged on a stirring shaft are respectively arranged in the tank body and the conical hopper. The medicine dissolving device is compact in structure, the medicine homogenizing effect can be enhanced, the medicine dissolving efficiency can be improved, and the temperature and the concentration after medicine dissolving can be ensured.

Description

Technical Field

[0001] The utility model relates to an automatic medicine adding and dissolving integrated device for pretreatment of kitchen waste water, belonging to the technical field of kitchen waste water treatment. Background Technique

[0002] In the kitchen waste treatment technology, pretreatment + anaerobic digestion is generally adopted. For the pretreatment of kitchen waste, solid-liquid separation technology is required, that is, liquid substances such as water, oil, and organic matter are separated from solid waste residues, and then the separated liquid and solid are treated separately. The waste water after pretreatment of kitchen waste usually has a high pollutant concentration and a high solid content rate, and is usually treated by a wet anaerobic process and then enters the sewage treatment plant for further treatment. With the continuous progress of the garbage classification process, the construction demand for small-scale kitchen waste treatment facilities in county areas is increasing day by day. At the same time, there is a demand for co-processing kitchen waste water in some incineration projects. The above two types of projects are restricted by land use and the safety specifications of anaerobic systems, and anaerobic systems cannot be built, so kitchen waste needs to be pretreated locally.

[0003] In the pretreatment of kitchen waste, it is usually necessary to add sodium hydroxide to adjust the pH value, flocculants, coagulants, etc., to reduce the solid content rate of the waste water and remove some pollutants. When adding medicine during the pretreatment of kitchen waste, one method is to manually add solid medicine into the treatment tank, which not only causes inaccurate medicine usage, but also affects the treatment effect due to the uneven distribution of the medicine in the treatment tank. For this reason, the existing automatic medicine adding equipment uses a medicine dissolving tank, which is equipped with a stirring device. The medicine dissolving tank is connected with a medicine adding device, and the liquid outlet of the medicine dissolving tank is communicated with the liquid inlet of the reaction tank. After the medicine powder is pre-dissolved in the medicine dissolving tank, the liquid medicine in the medicine dissolving tank is then put into the reaction tank. However, the above-mentioned automatic medicine adding equipment is large in volume, so it is used in large treatment plants. Moreover, during the pre-dissolution process of the medicine powder in the medicine dissolving tank, due to the changes in different regions and environmental temperatures, the dissolved temperature and homogenization of the medicine solution cannot be accurately controlled. Summary of the Invention

[0004] The purpose of the utility model is to provide an automatic medicine adding and dissolving integrated device for pretreatment of kitchen waste water, which has a compact structure, strengthens the homogenization effect of the medicine, improves the medicine dissolving efficiency, and can ensure the temperature after medicine dissolution.

[0005] The technical solution adopted by the utility model to achieve the above purpose is: an automatic medicine adding and dissolving integrated device for pretreatment of kitchen waste water, which is characterized in that it includes a medicine feeding screw conveyor, a medicine dissolving tank, an electric stirring mechanism and a medicine delivery pump;

[0006] The medicine feeding screw conveyor is obliquely installed on the conveying support frame, and the feeding port on the medicine feeding screw conveyor is located at a low position and the discharging port is located at a high position;

[0007] The medicine dissolving tank is fixed on the medicine dissolving tank legs, and the medicine dissolving tank includes a tank body and a conical hopper at the bottom. A medicine inlet and a water inlet are arranged on the top cover of the tank body. The medicine inlet is connected and communicated with the discharge port of the medicine feeding screw conveyor. The medicine discharge port at the bottom of the conical hopper is connected and communicated with the inlet of the medicine delivery pump. A medicine sampling port is arranged at the bottom of the tank body, and a control valve is arranged on the medicine sampling port. A plurality of vertical and inwardly protruding spoilers are arranged on the inner wall of the tank body along the circumferential direction, and an outer coil is arranged on the outer wall of the tank body. A medium inlet is arranged at the upper part of the outer coil, and a medium outlet is arranged at the bottom.

[0008] The electric stirring mechanism is vertically installed on the medicine dissolving tank, the motor is installed on the top cover of the tank body through the motor seat, the stirring shaft connected to the output side of the motor extends into the medicine dissolving tank, the stirring shaft is provided with stirring blades and inclined blades, the stirring blades are located in the tank body, and the inclined blades are arranged in the conical hopper.

[0009] The utility model integrates a medicine feeding screw conveyor, a medicine dissolving tank, an electric stirring mechanism and a medicine delivery pump into one, and has a compact structure. The medicine feeding screw conveyor is used to deliver medicine, so the spiral blades can break up the block medicine during the rotation process, and the medicine can be evenly added to the medicine dissolving tank. The utility model is provided with an electric stirring mechanism on the medicine dissolving tank, so the medicine and liquid added to the medicine dissolving tank can be fully stirred to accelerate the dissolution of the medicine in the tank body. In addition, the utility model is provided with an outer coil on the outer wall of the tank body, and the medicine in the tank body is cooled or heated by passing a refrigerant or a heat medium into the outer coil. According to different application scenarios of the medicine, the temperature of the medicine in the tank body can be controlled, and the effect of the medicine can be fully exerted on the premise of strengthening the homogeneous dissolution effect of the medicine in the tank body and improving the dissolution efficiency. The utility model is provided with a plurality of vertical and inner-convex spoilers on the inner wall of the tank body, which can change the flow state of the agent during the stirring and dissolving process of the agent, so that the agent can also present a turbulent state during the stirring process in the tank body, and further improve the dissolution efficiency of the agent. The structure of the integrated device for adding and dissolving the agent of the utility model is more compact and reasonable, which can meet the requirements of automatic adding and dissolving the agent, and efficiently provide the agent that meets the requirements for the pretreatment of kitchen wastewater, improve the efficiency of agent preparation, and make the equipment more integrated, thereby achieving the goal of eliminating the anaerobic system, effectively saving the land used for similar projects, and saving equipment investment. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The embodiments of the present utility model are further described in detail below in conjunction with the accompanying drawings.

[0011] Figure 1 The utility model is a structural schematic diagram of an automatic drug adding and dissolving integrated device for pre-treating kitchen wastewater.

[0012] Among them: 1—storage hopper, 2—drug delivery screw conveyor, 2-1—discharge port, 3—conveying support frame, 4—drug dissolving tank, 4-1—tank body, 4-11—drug inlet, 4-12—water inlet, 4-13—drug sampling port, 4-2—conical hopper, 4-21—drug outlet, 5—spoiler, 6—electric stirring mechanism, 6-1—motor, 6-2—stirring shaft, 6-3—stirring blade, 6-4—inclined blade, 7—external coil, 7-1—medium inlet, 7-2—medium outlet, 8—drug delivery pump, 9—drug dissolving tank support leg. DETAILED DESCRIPTION

[0013] See Figure 1 As shown, the utility model is an integrated automatic drug adding and dissolving device for pre-treatment of kitchen wastewater, comprising a drug feeding screw conveyor 2, a drug dissolving tank 4, an electric stirring mechanism 6 and a drug delivery pump 8.

[0014] See Figure 1 As shown, the medicine delivery screw conveyor 2 of the utility model is obliquely installed on the conveying support frame 3, the feed port on the medicine delivery screw conveyor 2 is located at a low position, and the discharge port 2-1 is located at a high position. The medicine delivery screw conveyor 2 can adopt the existing shaftless blade screw conveyor, and can achieve uniform medicine delivery according to the ratio of the medicine and the water phase. At the same time, during the conveying process, the spiral blades are used to break up the blocky medicines, and the medicines are evenly added into the medicine dissolving tank 4.

[0015] See Figure 1 As shown, the angle α between the rotation center axis of the spiral blade of the medicine delivery screw conveyor 2 of the present invention and the horizontal plane is between 25 and 30 degrees. If the angle α is 28 degrees, the efficiency of medicine delivery can be ensured and the equipment cost can be reduced. Figure 1 As shown, the medicine delivery screw conveyor 2 of the utility model is fixed with a storage hopper 1 at the feed inlet. The medicine passes through the storage hopper and then enters the medicine delivery screw conveyor 2, so as to maintain the uniformity of the feeding as much as possible.

[0016] See Figure 1 As shown, the medicine dissolving tank 4 of the utility model is fixed on the medicine dissolving tank support legs 9, and the medicine dissolving tank 4 is supported by the medicine dissolving tank support legs 9. The medicine dissolving tank 4 of the utility model includes a tank body 4-1 and a conical hopper 4-2 at the bottom. The top cover of the tank body 4-1 is provided with a medicine inlet 4-11 and a water inlet 4-12, and the top cover can be detachably mounted on the tank body. The medicine inlet 4-11 is connected to the discharge port 2-1 of the medicine delivery screw conveyor 2. The medicine and liquid of the set ratio are added into the tank body 4-1, and the medicine is dissolved in the liquid by stirring. The medicine outlet 4-21 at the bottom of the conical hopper 4-2 is connected to the inlet of the medicine delivery pump 8, and the dissolved medicine is delivered to the food wastewater pretreatment section through the medicine delivery pump 8. The medicine delivery pump 8 can use an existing material delivery pump. Figure 1As shown in the figure, a chemical agent sampling port 4-13 is provided at the lower part of the tank body 4-1 of the present utility model. A control valve is provided on the chemical agent sampling port 4-13. Therefore, the dissolved liquid medicine can be detected through the chemical agent sampling port 4-13 to ensure that the concentration of the chemical agent after dissolution reaches the required value. The conical angle β of the conical hopper 4-2 at the lower part of the tank body 4-1 is between 70° and 100°. For example, when the conical angle β is 90°, the cone can be a conical shape, which can ensure that the dissolved chemical agent smoothly enters the inlet of the chemical agent delivery pump 8, reduce the overall height of the device, and reduce the equipment investment and manufacturing difficulty.

[0017] See Figure 1 As shown in the figure, a plurality of vertically arranged and inwardly convex flow disturbing plates 5 are provided along the circumferential direction of the inner wall of the tank body 4-1 of the present utility model. The flow disturbing plate 5 can be in an L shape. During the stirring process, the flow state of the liquid medicine is changed through the flow disturbing plate 5 at the tank wall, so that the liquid medicine presents a turbulent flow state in the tank body 4-1, strengthening the homogenization effect of the chemical agent in the tank and improving the chemical agent dissolution efficiency. See Figure 1 As shown in the figure, the flow disturbing plates 5 of the present utility model are arranged at equal intervals along the circumferential direction of the inner wall of the tank body 4-1, and at least two layers of flow disturbing plates 5 are arranged on the inner wall of the tank body 4-1 along the height direction. Therefore, the undissolved chemical agent is impacted by the flow disturbing plates 5 and accelerated to dissolve in water.

[0018] See Figure 1 As shown in the figure, an external coil pipe 7 is provided on the outer wall of the tank body 4-1 of the present utility model. The cross section of the external coil pipe 7 is a semi-circular pipe or a rectangular pipe. A medium inlet 7-1 is provided at the upper part of the external coil pipe 7, and a medium outlet 7-2 is provided at the bottom. Therefore, according to different application scenarios of the chemical agent, a refrigerant medium or a heat medium can be added through the medium inlet 7-1 to cool or heat the chemical agent in the tank, and control and maintain the temperature of the chemical agent in the tank.

[0019] See Figure 1 As shown in the figure, the electric stirring mechanism 6 of the present utility model is vertically installed on the chemical agent dissolving tank 4. The motor 6-1 is installed on the top cover of the tank body 4-1 through a motor seat. The stirring shaft 6-2 connected to the output side of the motor 6-1 extends into the chemical agent dissolving tank 4. The output shaft of the motor 6-1 is connected to the stirring shaft 6-2 through a coupling. Stirring blades 6-3 and inclined blades 6-4 are provided on the stirring shaft 6-2. The stirring blades 6-3 are located in the tank body 4-1, and the inclined blades 6-4 are arranged in the conical hopper 4-2. The rotation of the stirring shaft 6-2 is controlled by the motor 6-1, so that the stirring blades 6-3 and the inclined blades 6-4 stir and dissolve the liquid and the chemical agent, realizing the accelerated dissolution of the medicine in the tank and ensuring the homogenization of the chemical agent in the tank. In particular, the inclined blades 6-4 are arranged in the conical hopper 4-2, increasing the stirring area and enabling the dissolved chemical agent to smoothly enter the lower chemical agent delivery pump 8.

[0020] See Figure 1As shown in the figure, at least two outwardly convex mounting seats are provided on the stirring shaft 6-2 of the present utility model along the circumferential direction. The stirring paddle 6-3 is installed on the mounting seat through fasteners, and at least two mounting seats are provided along the axial direction. Therefore, multiple layers of stirring paddles 6-3 can be provided to stir the liquid phase and the medicament, increase the stirring area, and accelerate the homogenization of the medicament in the tank. See Figure 1 As shown in the figure, the inclined paddle 6-4 of the present utility model is an inverted V-shaped paddle with a flat top. The top of the inclined paddle 6-4 is installed on the bottom end face of the stirring shaft 6-2 through fasteners. Therefore, it is convenient for the installation and maintenance of the stirring paddle 6-3 and the inclined paddle 6-4.

[0021] The materials of the flow-through parts of the medicament dissolving tank 4, the stirring shaft 6-2, the stirring paddle 6-3, the inclined paddle 6-4 and the medicament delivery pump 8 of the present utility model are all selected as high-quality stainless steel, which can effectively prevent equipment corrosion and extend the service life.

[0022] See Figure 1 As shown in the figure, when the present utility model works, the medicine feeding screw conveyor 2 is started, and the medicine enters the medicine feeding screw conveyor 2 from the storage hopper 1. Under the action of the spiral blade, the medicine is lifted and conveyed to the medicine inlet 4-11 of the medicament dissolving tank 4 and added into the medicament dissolving tank 4. The liquid used for dissolving the medicine is added into the medicament dissolving tank 4 from the water inlet 4-12. The electric stirring mechanism 6 is started to stir the liquid and the medicament in the medicament dissolving tank 4. Under the action of the spoiler 5, the medicine is quickly dissolved in the liquid. According to the properties of the medicine, the corresponding refrigerant or heat medium is introduced into the outer coil to maintain the temperature of the medicament in the tank. The dissolved liquid medicine is detected through the medicine sampling port 4-13. After reaching the set required concentration, the medicament delivery pump 8 is started, and the uniformly mixed liquid medicine is sent out of the tank body 4-1 through the medicine outlet 4-21 and sent to the pretreatment process of kitchen waste water through the medicament delivery pump 8.

Claims

1. An automatic drug adding and dissolving integrated device for pretreatment of kitchen wastewater, characterized in that: It includes a medicine delivery screw conveyor, a medicine dissolving tank, an electric stirring mechanism and a medicine delivery pump; The medicine delivery screw conveyor is obliquely installed on the conveying support frame, and the feed port on the medicine delivery screw conveyor is located at a low position and the discharge port is located at a high position; The medicine dissolving tank is fixed on the medicine dissolving tank legs, and the medicine dissolving tank includes a tank body and a conical hopper at the bottom. A medicine inlet and a water inlet are arranged on the top cover of the tank body. The medicine inlet is connected and communicated with the discharge port of the medicine feeding screw conveyor. The medicine discharge port at the bottom of the conical hopper is connected and communicated with the inlet of the medicine delivery pump. A medicine sampling port is arranged at the bottom of the tank body, and a control valve is arranged on the medicine sampling port. A plurality of vertical and inwardly protruding spoilers are arranged on the inner wall of the tank body along the circumferential direction, and an outer coil is arranged on the outer wall of the tank body. A medium inlet is arranged at the upper part of the outer coil, and a medium outlet is arranged at the bottom. The electric stirring mechanism is vertically installed on the medicine dissolving tank, the motor is installed on the top cover of the tank body through the motor seat, the stirring shaft connected to the output side of the motor extends into the medicine dissolving tank, the stirring shaft is provided with stirring blades and inclined blades, the stirring blades are located in the tank body, and the inclined blades are arranged in the conical hopper.

2. The automatic drug adding and dissolving integrated device for pre-treatment of kitchen wastewater according to claim 1, characterized in that: The medicine screw conveyor is fixed with a storage hopper at the feed inlet.

3. The automatic drug adding and dissolving integrated device for pre-treatment of kitchen wastewater according to claim 1 or 2, characterized in that: The angle α between the rotation center axis of the spiral blade of the medicine delivery spiral conveyor and the horizontal plane is between 25 and 30 degrees.

4. The automatic drug adding and dissolving integrated device for pre-treatment of kitchen wastewater according to claim 1, characterized in that: The spoilers are arranged equidistantly along the circumferential direction of the inner wall of the tank body, and at least two layers of spoilers are arranged on the inner wall of the tank body along the height direction.

5. The automatic drug adding and dissolving integrated device for pre-treatment of kitchen wastewater according to claim 1, characterized in that: The stirring shaft is provided with two outwardly protruding mounting seats on its circumference, and the stirring blades are mounted on the mounting seats by fasteners, and at least two groups of mounting seats are provided along the axial direction. The inclined blades are inverted V-shaped blades with a flat top, and the tops of the inclined blades are mounted on the bottom end surface of the stirring shaft by fasteners.

6. The automatic drug adding and dissolving integrated device for pre-treatment of kitchen wastewater according to claim 1, characterized in that: The conical hopper at the lower part of the tank body has a conical angle β between 70° and 100°.

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