Pretreatment device for recycling heavy metal wastewater

Abstract

The utility model provides a pretreatment device for recycling heavy metal wastewater, which relates to the technical field of wastewater treatment and recycling and comprises a shell I, a medicine injection hole and a threaded bottom cover, a water inlet hole is formed in the outer side of the upper end of the first shell, a second shell is fixedly connected to the lower end of the first shell, four sets of connecting rods are connected to the interior of the first shell, an aeration device is connected to the inner sides of the four sets of connecting rods, the lower end of the second shell is in an inverted cone shape, a round hole is formed in the bottom end of the second shell, and the two sets of medicine injection holes are formed in the outer side of the second shell; the threaded bottom cover is arranged in a round hole in the bottom end of the second shell and movably connected with the round hole in the bottom end of the second shell, and the screen is connected to the inner side of the lower end of the first shell, so that heavy metal waste water is preliminarily filtered, and large heavy metal residues are prevented from entering the filter. The problem that an active carbon layer and a filter layer of an existing pretreatment device for heavy metal wastewater recovery are troublesome to replace or clean is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to wastewater treatment and recovery technical field, more specifically, particularly relate to a kind of pretreatment device for heavy metal wastewater recovery. BACKGROUND

[0002] The pretreatment device for heavy metal wastewater recovery is an important equipment for treating heavy metal wastewater, which can effectively remove heavy metal ions in wastewater and reduce environmental pollution caused by wastewater, and plays an important role in metallurgy, electroplating, mining and chemical industry processes.

[0003] Based on the above, the heavy metal wastewater recovery pretreatment device can preliminarily treat wastewater by various physical and chemical means, laying a foundation for subsequent recovery and wastewater discharge in line with standards. However, most of the heavy metal wastewater recovery pretreatment devices currently used need to replace or clean the activated carbon layer and filter layer after long-term use, which is relatively troublesome. Therefore, a new type of heavy metal wastewater recovery pretreatment device is needed. UTILITY MODEL CONTENT

[0004] To solve the above technical problems, the utility model provides a kind of pretreatment device for heavy metal wastewater recovery to solve the problem that the existing pretreatment device for heavy metal wastewater recovery is relatively troublesome to replace or clean the activated carbon layer and filter layer.

[0005] The heavy metal wastewater recovery pretreatment device is achieved by the following specific technical means:

[0006] A pretreatment device for heavy metal wastewater recovery includes a shell one, a medicine injection hole, and a threaded bottom cover.

[0007] The upper end of the shell one is provided with a water inlet hole, and the lower end of the shell one is fixedly connected with a shell two. The outer side of the shell two is connected with a support, and the outer side of the shell two is provided with a water outlet hole near the lower end. An electric valve is arranged on the water outlet hole. Four groups of connecting rods are connected inside the shell one, and an aeration device is connected inside the four groups of connecting rods. The lower end of the shell two is in inverted conical shape, and a circular hole is arranged at the bottom end of the shell two. Two medicine injection holes are arranged on the outer side of the shell two and close to the upper end of the shell two. The threaded bottom cover is arranged in the circular hole at the bottom end of the shell two and is movably connected with the circular hole at the bottom end of the shell two.

[0008] Further, the lower end of the shell one is connected with a screen, and the lower end of the screen is connected with a conical plate. A circular hole is arranged at the center of the conical plate, and a connecting pipe is connected to the lower end of the circular hole of the conical plate.

[0009] Further, the left side of the second shell near the lower end position is provided with a square hole, the right side of the second shell near the lower end position is internally provided with a groove, the square hole corresponds to the groove, a sealing baffle is clamped in the square hole, the tail end of the sealing baffle is arranged in the groove, sealing strips are connected to the upper and lower ends of the sealing baffle, and a handle is connected to the front end of the sealing baffle.

[0010] Further, the lower end of the second shell is internally connected with a first sieve plate, a second sieve plate and a third sieve plate, the first sieve plate is close to the upper end of the sealing baffle, the third sieve plate is close to the lower end of the sealing baffle, the third sieve plate is arranged between the first sieve plate and the third sieve plate, and filter cotton is clamped between the second sieve plate and the third sieve plate.

[0011] Further, the upper end of the threaded bottom cover is provided with a sealing ring, and the outer side of the threaded bottom cover is connected with an annular handle.

[0012] Further, the lower end of the aeration device is connected with an exhaust pipe, four groups of thin connecting rods are connected to the inside of the aeration device, motor boxes are connected to the inner sides of the four groups of thin connecting rods, motors are arranged in the motor boxes, motor shafts of the motors pass through the upper ends of the motor boxes, turbine fans are connected to the motor shafts of the motors, and a protective net is arranged at the upper end of the inside of the aeration device.

[0013] Compared with the prior art, the utility model has the advantages of the following:

[0014] 1、The utility model discloses a sealing baffle is clamped in the square hole of the second shell near the lower end position, and the tail end of the sealing baffle is arranged in the groove, which is favorable for cleaning the first sieve plate, the second sieve plate and the third sieve plate in the second shell and facilitates filling and replacing activated carbon and filter cotton.

[0015] 2、The threaded bottom cover is arranged in the bottom end circular hole of the second shell and movably connected with the bottom end circular hole of the second shell, the threaded bottom cover is inverted conical, finer impurities in waste water are deposited on the inner side of the threaded bottom cover, the finer impurities are prevented from being discharged from the water outlet, and the threaded bottom cover is opened to facilitate subsequent treatment of the fine impurity deposits on the inner side of the threaded bottom cover.

[0016] 3、The lower end of the first shell is connected with a screen, which is favorable for preliminarily filtering heavy metal waste water and preventing larger heavy metal residues from entering the utility model. DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a sectional structure schematic diagram of the first shell and the second shell of the utility model.

[0019] Figure 3 is the section structure schematic diagram of shell one of the utility model.

[0020] Figure 4 is the section structure schematic diagram of shell two bottom of the utility model.

[0021] Figure 5 is the bottom view structure schematic diagram of shell two of the utility model.

[0022] Figure 6 is the structure schematic diagram of aeration device of the utility model.

[0023] In the drawing, the corresponding relationship of component name and drawing number is as follows:

[0024] 1, shell one;2, water inlet hole;3, connecting rod;4, aeration device;5, support;6, medicine injection hole;7, sealing baffle;8, water outlet hole;9, shell two;901, threaded bottom cover;902, sealing ring;10, screen;11, screen plate one;1101, screen plate two;1102, screen plate three;12, filter cotton;13, sealing strip;14, handle;15, annular handle;16, exhaust pipe;17, thin connecting rod;18, motor;19, turbine fan;20, protective net;21, conical plate;22, connecting pipe. DETAILED DESCRIPTION

[0025] The embodiment of the utility model is further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

[0026] Example:

[0027] As shown in the accompanying drawings Figure 1 to the accompanying Figure 6 As shown:

[0028] The utility model provides a kind of pretreatment device for heavy metal wastewater recovery, including shell one 1, medicine injection hole 6, threaded bottom cover 901;

[0029] The upper end outside of shell one 1 is equipped with water inlet hole 2, the lower end of shell one 1 is fixedly connected with shell two 9, the outside of shell two 9 is connected with support 5, the position of the outside of shell two 9 close to lower end is equipped with water outlet hole 8, and electric valve is equipped on water outlet hole 8, the inside of shell one 1 is connected with four groups of connecting rods 3, and aeration device 4 is connected in the inside of four groups of connecting rods 3, the lower end of shell two 9 is inverted conical, and round hole is equipped in the bottom end of shell two 9, two groups of medicine injection holes 6 are placed on the outside of shell two 9, and close to the upper end of shell two 9, threaded bottom cover 901 is placed in the bottom end round hole of shell two 9, and with the bottom end round hole of shell two 9 movably connected.

[0030] Among them, as Figure 3As shown, a screen 10 is connected to the inner side of the lower end of the outer casing 1, and a conical plate 21 is connected to the lower end of the screen 10. A round hole is provided at the center end of the conical plate 21, and a connecting pipe 22 is connected to the lower end of the round hole of the conical plate 21. During use, the screen 10 is used to perform simple filtration of heavy metal wastewater to prevent larger heavy metal fragments in the wastewater from entering the interior of this utility model.

[0031] Among them, such as Figure 4 As shown, a square hole is provided on the left side near the lower end of the outer casing 9, and a groove is provided on the right side near the lower end of the outer casing 9. The square hole corresponds to the groove, and a sealing baffle 7 is installed in the square hole. The tail end of the sealing baffle 7 is placed in the groove. Sealing strips 13 are connected to the upper and lower ends of the sealing baffle 7. A handle 14 is connected to the outer side of the front end of the sealing baffle 7. By sliding the sealing baffle 7, the internal screen plates 11, 1101, and 1102 can be cleaned easily, simply, and quickly.

[0032] Among them, such as Figure 2 As shown, the lower end of the outer casing 2 9 is connected to a sieve plate 11, a sieve plate 2 1101, and a sieve plate 3 1102. The sieve plate 11 is close to the upper end of the sealing baffle 7, and the sieve plate 3 1102 is close to the lower end of the sealing baffle 7. The sieve plate 3 1102 is placed between the sieve plate 11 and the sieve plate 3 1102. Filter cotton 12 is installed between the sieve plate 2 1101 and the sieve plate 3 1102. Activated carbon is filled between the sieve plate 11 and the sieve plate 2 1101 to adsorb and filter the wastewater. At the same time, the filter cotton 12 is used for secondary filtration. The filter cotton 12 can be replaced by sliding the sealing baffle 7 open.

[0033] Among them, such as Figure 5 As shown, the upper end of the threaded bottom cover 901 is provided with a sealing ring 902, and the outer side of the threaded bottom cover 901 is connected with an annular handle 15. The sealing ring 902 prevents leakage, and the threaded bottom cover 901 is inverted conical in shape, so that finer impurities in the wastewater settle on the inner side of the threaded bottom cover 901, preventing finer impurities from being discharged from the outlet hole 8.

[0034] Among them, such as Figure 6 As shown, the lower end of the aeration device 4 is connected to an exhaust pipe 16. The interior of the aeration device 4 is connected to four sets of thin connecting rods 17. The inner side of the four sets of thin connecting rods 17 is connected to a motor box, and a motor 18 is installed inside the motor box. The motor shaft of the motor 18 extends out of the upper end of the motor box, and a turbine fan 19 is connected to the motor shaft of the motor 18. A protective net 20 is provided at the upper end of the interior of the aeration device 4. The heavy metal wastewater inside this utility model is aerated and treated by the aeration device 4.

[0035] The specific usage and function of this embodiment are as follows:

[0036] like Figures 1 to 6As shown, in the utility model, the wastewater is filled into the utility model through the water inlet hole 2, the heavy metal wastewater in the utility model is treated by aeration through the aeration device 4, the heavy metal wastewater is simply filtered through the screen 10, the larger heavy metal debris in the wastewater is prevented from entering the utility model, the chemical reagent such as precipitant and flocculant is injected into the utility model through the two groups of medicine injection holes 6, the heavy metal ions in the heavy metal wastewater react to produce precipitate, which is beneficial to subsequent filtration, the screen plate one 11 and the screen plate two 1101 are filled with activated carbon, the wastewater is adsorbed and filtered, the filter cotton 12 is used for re-filtering, the filter cotton 12 is replaced through the sliding opening sealing baffle 7, the threaded bottom cover 901 is inverted conical, the smaller impurities in the wastewater are precipitated on the inner side of the threaded bottom cover 901, the smaller impurities are prevented from being discharged from the water outlet hole 8, and the subsequent heavy metal wastewater treatment and recovery are facilitated.

[0037] The part not described in the utility model is the known technology of the person skilled in the art.

Claims

1. A pretreatment device for heavy metal wastewater recovery, characterized by: It includes shell one (1), injection hole (6) and threaded bottom cover (901); The upper end of the shell one (1) is provided with a water inlet hole (2) on the outside, and the lower end of the shell one (1) is fixedly connected with a shell two (9), the outer side of the shell two (9) is connected with a support (5), the outer side of the shell two (9) is provided with a water outlet hole (8) near the lower end, the water outlet hole (8) is provided with an electric valve, the inside of the shell one (1) is connected with four connecting rods (3), and the inside of the four connecting rods (3) is connected with an aeration device (4), the lower end of the shell two (9) is inverted conical, and a circular hole is arranged at the bottom end of the shell two (9), two injection holes (6) are arranged on the outer side of the shell two (9) and close to the upper end of the shell two (9), and the threaded bottom cover (901) is arranged in the bottom circular hole of the shell two (9) and movably connected with the bottom circular hole of the shell two (9).

2. The pre-treatment device for heavy metal wastewater recovery according to claim 1, characterized in that: The lower end of the shell one (1) is connected with a screen (10) on the inside, and a conical plate (21) is connected at the lower end of the screen (10), a circular hole is arranged at the center end of the conical plate (21), and a connecting pipe (22) is connected at the lower end of the circular hole of the conical plate (21).

3. The pre-treatment device for heavy metal wastewater recovery according to claim 1, characterized in that: The left side of the shell two (9) near the lower end position is provided with a square hole, the right side of the shell two (9) near the lower end position is provided with a groove on the inside, the square hole corresponds to the groove, a sealing baffle (7) is clamped in the square hole, the tail end of the sealing baffle (7) is arranged in the groove, sealing strips (13) are connected to the upper and lower ends of the sealing baffle (7), and a handle (14) is connected to the front end of the sealing baffle (7) on the outside.

4. The pre-treatment device for heavy metal wastewater recovery according to claim 1, characterized in that: The lower end of the shell two (9) is connected with a screen plate one (11), a screen plate two (1101) and a screen plate three (1102) on the inside, the screen plate one (11) is close to the upper end of the sealing baffle (7), the screen plate three (1102) is close to the lower end of the sealing baffle (7), the screen plate three (1102) is arranged between the screen plate one (11) and the screen plate three (1102), and filter cotton (12) is clamped between the screen plate two (1101) and the screen plate three (1102).

5. The pre-treatment device for heavy metal wastewater recovery according to claim 1, characterized in that: The upper end of the threaded bottom cover (901) is provided with a sealing ring (902), and the outer side of the threaded bottom cover (901) is connected with an annular handle (15).

6. The pre-treatment device for heavy metal wastewater recovery according to claim 1, characterized in that: The lower end of the aeration device (4) is connected with an exhaust pipe (16), the inside of the aeration device (4) is connected with four thin connecting rods (17), the inside of the four thin connecting rods (17) is connected with a motor box, a motor (18) is arranged in the inside of the motor box, the motor shaft of the motor (18) penetrates through the upper end of the motor box, a turbine fan (19) is connected to the motor shaft of the motor (18), and a protective net (20) is arranged at the upper end of the inside of the aeration device (4).

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