Wastewater treatment agent spreading device for wastewater treatment

Abstract

The utility model belongs to the technical field of wastewater treatment equipment, and particularly relates to a wastewater treatment agent spreading device for wastewater treatment, which comprises a wastewater treatment tank body, a first mounting seat and a second mounting seat are respectively mounted on the outer walls of two sides of the wastewater treatment tank body, and a moving mechanism is mounted at the top end of the first mounting seat. A treatment agent sowing mechanism is arranged on the moving mechanism, the moving mechanism comprises a first protective cover body, a first rainproof shutter, a rectangular groove hole, a first connecting rod, a shell, a liquid outlet groove hole, a first rotating shaft, a second connecting rod, a third sliding rail, a third sliding block, a moving plate, a threaded hole, a first gear motor and a mounting plate, and the moving plate is arranged in the shell. According to the utility model, a wastewater treatment agent can be uniformly spread on the surface of wastewater, so that the situation that the wastewater treatment effect is poor as the wastewater treatment agent is caked due to the fact that the wastewater treatment agent is intensively spread in a certain area is avoided, and the practicability is high.

Description

Technical Field

[0001] This utility model belongs to the technical field of wastewater treatment equipment, and in particular relates to a wastewater treatment agent spreading device for wastewater treatment. Background Technology

[0002] As the name suggests, a treatment agent is an additive used in the treatment process. Polyacrylamide, cationic polyacrylamide, anionic polyacrylamide, nonionic, amphoteric polyacrylamide, and polyaluminum chloride can all be used as treatment agents in different applications. In treatment systems using various inorganic coagulants and flocculants such as aluminum salts and iron salts, if the volume of water to be treated exceeds the treatment capacity of the clarifier, or if flocs in the water float out due to other factors and do not have time to settle, simply adding 0.1-2 ppm of PAM as a coagulant aid can significantly improve the settling effect. Moreover, the COD and color indicators of the treated water will also be significantly improved.

[0003] A search revealed that patent publication number CN213557812U discloses a wastewater treatment agent spreading device, comprising a housing, an air pump, and a drive motor. The top of the housing has an inlet, and a support plate is welded to the inside of the housing. The drive motor, air pump, and battery are fixedly installed inside the housing with screws, with the drive motor and battery located on opposite sides of the air pump. The output end of the drive motor passes through the support plate and is connected to a rotating shaft. Crushing blades are welded to the surface of the rotating shaft. The air pump's outlet is connected to the upper interior of the housing via a pipe. An interface valve and control panel are welded to one side of the housing. This invention is convenient to use, provides uniform spreading, reduces wastewater treatment time, and the built-in battery allows the device to operate normally without an external power source. The spray angle can be freely adjusted via a conduit to handle wastewater in different environments.

[0004] In practical use, the above-mentioned technical solution involves manually spraying the wastewater treatment agent onto the surface of the wastewater using a handheld spraying structure. However, this method of adding the wastewater treatment agent to the wastewater can result in situations where the wastewater treatment agent is not sprayed onto certain parts of the wastewater surface. Furthermore, manual spraying is not uniform enough, which affects the wastewater treatment effect. Therefore, we propose a wastewater treatment agent spreading device to solve the existing problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a wastewater treatment agent application device for wastewater treatment, thereby solving the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A wastewater treatment agent spreading device for wastewater treatment includes a first mounting base and a second mounting base: the first mounting base and the second mounting base are installed on the outer walls of both sides of the wastewater treatment tank, and a moving mechanism is installed on the top of the first mounting base, and a treatment agent spreading mechanism is provided on the moving mechanism;

[0008] The moving mechanism includes a first protective cover, a first rainproof louver, a rectangular slot, a first connecting rod, a housing, a liquid outlet slot, a first rotating shaft, a second connecting rod, a third slide rail, a third slider, a moving plate, a threaded hole, a first geared motor, and a mounting plate. The moving plate is provided inside the housing. A threaded hole is provided at the center of the end wall of the moving plate. The first rotating shaft is installed in the threaded hole. The first rotating shaft is installed in a bearing on the front wall of the housing. The other end of the first rotating shaft passes through a sealed bearing on the rear wall of the housing and extends into the first protective cover, and is connected to the first geared motor through a coupling. The first connecting rod is installed at the top of the moving plate, and the other end of the first connecting rod passes through the rectangular slot on the top of the housing and extends to the outside to connect with the support plate on the treatment agent dispensing mechanism.

[0009] The treatment agent dispensing mechanism includes a second protective cover, a second rainproof louver, a storage tank, an end cap, a support plate, a fourth connecting rod, a first slider, a drain valve, a nozzle, a pipe joint, a drain pipe, a third connecting rod, a second slider, a second geared motor, a support block, a stirring rod, a second rotating shaft, and a liquid addition pipe. The storage tank is mounted on the upper surface of the support plate. The storage tank contains a second rotating shaft and a stirring rod, with the stirring rod mounted on the outer wall of the second rotating shaft. One end of the second rotating shaft is mounted in a sealed bearing on one side of the outer wall of the storage tank, and the other end of the second rotating shaft extends through the sealed bearing on the other side of the outer wall of the storage tank to the interior of the second protective cover and is connected to the second geared motor via a coupling. A drain pipe is located at the bottom of the storage tank. The bottom end of the drain pipe penetrates the surface of the support plate and is connected to the nozzle via a pipe joint. A drain valve is also provided on the drain pipe.

[0010] Furthermore, an inlet pipe is provided above the front wall of the wastewater treatment tank, and an inlet valve is provided on the inlet pipe; an outlet pipe is provided below the rear wall of the wastewater treatment tank, and an outlet valve is provided on the outlet pipe.

[0011] Furthermore, the outer wall of the first rotating shaft is provided with an external thread, and the external thread on the outer wall of the first rotating shaft is threadedly engaged with the threaded hole on the moving plate.

[0012] Furthermore, a third slider is installed on both outer walls of the movable plate, the other end of the third slider is installed on a third slide rail, and the third slider and the third slide rail are slidably connected. The third slide rail is installed on both inner walls of the housing.

[0013] Furthermore, the first geared motor is mounted on the rear end wall of the mounting plate, and the output shaft of the first geared motor passes through the end wall of the mounting plate. A second connecting rod is installed at each of the four corners of the front end wall of the mounting plate, and the other end of the second connecting rod is mounted on the rear end wall of the housing. The first protective cover is fixedly connected to the rear end wall of the housing by fastening bolts. A first rainproof louver is provided on both outer walls of the first protective cover. A liquid outlet groove is provided on the lower side of one outer wall of the housing.

[0014] Furthermore, the outer wall of the first connecting rod and the wall of the rectangular slot are connected by a gap.

[0015] Furthermore, the second geared motor is mounted on the upper surface of the support block, the support block is mounted on the outer wall of the other side of the liquid storage tank, and the support block is located inside the second protective cover. The second protective cover is fixedly connected to the liquid storage tank by fastening bolts, and a second rainproof louver is provided on one side of the outer wall of the second protective cover.

[0016] Furthermore, a liquid filling pipe is provided at the center of the top of the liquid storage tank, and an end cap is installed at the top of the liquid filling pipe. The inner wall of the end cap is provided with an internal thread, and the outer wall of the liquid filling pipe is provided with an external thread. The internal thread on the end cap and the external thread on the liquid filling pipe are connected by threaded engagement.

[0017] Furthermore, both ends of the lower surface of the support plate are connected to the first slider via a fourth connecting rod. The bottom end of the first slider is mounted on the first slide rail, and the first slider and the first slide rail are slidably connected. The first slide rail is mounted on both sides of the top of the wastewater treatment tank. One side of the lower surface of the support plate is connected to the second slider via a third connecting rod. The bottom end of the second slider is mounted on the second slide rail, and the second slider and the second slide rail are slidably connected. The second slide rail is mounted on the top of the second mounting base.

[0018] By means of the above technical solution, this utility model provides a wastewater treatment agent dispensing device for wastewater treatment, which has at least the following beneficial effects: Through a series of coordinated structural arrangements, when a worker dispenses wastewater treatment agent into the wastewater, the worker adds the wastewater treatment agent from the adding pipe into the storage tank. The worker then starts the first reduction motor on the moving mechanism and opens the drain valve on the drain pipe. The starting of the first reduction motor drives the first rotating shaft to rotate forward or backward. Because the external thread on the outer wall of the first rotating shaft is threadedly engaged with the threaded hole on the moving plate, the forward or reverse rotation of the first rotating shaft causes the moving plate to move linearly in the Z-axis direction. This linear movement of the moving plate in the Z-axis direction can drive... The treatment agent dispensing mechanism moves linearly along the Z-axis, which causes the nozzle to move linearly along the Z-axis as well. This linear movement of the nozzle sprays the wastewater treatment agent onto the wastewater in the wastewater treatment tank, ensuring even distribution of the treatment agent to the surface of the wastewater inside the tank. Compared to existing manual spraying methods, this invention evenly distributes the treatment agent to the surface of the wastewater, avoiding the problem of concentrated application in a certain area leading to clumping and poor treatment results. It also prevents localized areas of the wastewater inside the tank from not receiving the treatment agent, making it highly practical. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0020] Figure 1 A three-dimensional structural diagram of the wastewater treatment agent dispensing device provided in the embodiments of this application. Figure 1 ;

[0021] Figure 2 A three-dimensional structural diagram of the wastewater treatment agent dispensing device provided in the embodiments of this application. Figure 2 ;

[0022] Figure 3 This is a schematic diagram of the treatment agent spreading mechanism of the wastewater treatment agent spreading device provided in the embodiments of this application;

[0023] Figure 4 This is a cross-sectional view of the treatment agent dispensing mechanism of the wastewater treatment agent dispensing device provided in the embodiments of this application;

[0024] Figure 5 This is a schematic diagram of the moving mechanism of the wastewater treatment agent dispensing device provided in the embodiments of this application;

[0025] Figure 6A top view of the internal structure of the moving mechanism of the wastewater treatment agent dispensing device provided in the embodiments of this application;

[0026] Figure 7 This is a front view of the internal structure of the moving mechanism of the wastewater treatment agent spreading device provided in the embodiments of this application.

[0027] In the diagram: 1. Moving mechanism; 101. First protective cover; 102. First rainproof louver; 103. Rectangular slot; 104. First connecting rod; 105. Housing; 106. Liquid outlet slot; 107. First rotating shaft; 108. Second connecting rod; 109. Third slide rail; 110. Third slider; 111. Moving plate; 112. Threaded hole; 113. First geared motor; 114. Mounting plate; 2. First mounting base; 3. Liquid inlet pipe; 4. Liquid inlet valve; 5. Wastewater treatment tank; 6. Treatment agent dispensing mechanism; 601. Second protective cover 602. Cover body; 603. Second rainproof louver; 604. Liquid storage tank; 605. End cap; 606. Support plate; 607. Fourth connecting rod; 608. First slider; 609. Drain valve; 610. Nozzle; 611. Pipe joint; 612. Drain pipe; 613. Third connecting rod; 614. Second slider; 615. Second geared motor; 616. Support block; 617. Stirring rod; 618. Second rotating shaft; 619. Liquid filling pipe; 7. First slide rail; 8. Second slide rail; 9. Second mounting base; 10. Liquid outlet valve; 11. Liquid outlet pipe. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1 to 7The wastewater treatment agent spreading device of this utility model mainly includes a first mounting base 2 and a second mounting base 9. The first mounting base 2 and the second mounting base 9 are installed on the outer walls of both sides of the wastewater treatment tank 5. A moving mechanism 1 is installed at the top of the first mounting base 2. A treatment agent spreading mechanism 6 is provided on the moving mechanism 1. The moving mechanism 1 includes a first protective cover 101, a first rainproof louver 102, a rectangular slot 103, a first connecting rod 104, a housing 105, a liquid outlet slot 106, a first rotating shaft 107, a second connecting rod 108, a third slide rail 109, a third slider 110, a moving plate 111, a threaded hole 112, a first reduction motor 113, and a mounting plate 114. The moving plate 111 is provided inside the housing 105. A threaded hole 112 is provided at the center of the end wall of the movable plate 111. A first rotating shaft 107 is installed in the threaded hole 112. The first rotating shaft 107 is installed in a bearing on the front wall of the housing 105. The other end of the first rotating shaft 107 passes through a sealed bearing on the rear wall of the housing 105 and extends into the interior of the first protective cover 101, and is connected to the first geared motor 113 via a coupling. A first connecting rod 104 is installed at the top of the movable plate 111. The other end of the first connecting rod 104 passes through a rectangular slot 103 at the top of the housing 105 and extends to the outside to connect with the support plate 605 on the treatment agent dispensing mechanism 6. The treatment agent dispensing mechanism 6 includes a second protective cover 601, a second rainproof louver 602, a liquid storage tank 603, an end cap 604, and a support. The system comprises a plate 605, a fourth connecting rod 606, a first slider 607, a drain valve 608, a nozzle 609, a pipe connector 610, a drain pipe 611, a third connecting rod 612, a second slider 613, a second reduction motor 614, a support block 615, a stirring rod 616, a second rotating shaft 617, and a liquid addition pipe 618. A storage tank 603 is mounted on the upper surface of the support plate 605. The storage tank 603 contains the second rotating shaft 617 and the stirring rod 616. The stirring rod 616 is mounted on the outer wall of the second rotating shaft 617. One end of the second rotating shaft 617 is installed in a sealed bearing on one side of the outer wall of the storage tank 603, and the other end of the second rotating shaft 617 extends through the sealed bearing on the other side of the outer wall of the storage tank 603 into the second protective cover 601. The unit is connected to the second geared motor 614 via a coupling. A drain pipe 611 is provided at the bottom of the storage tank 603. The bottom end of the drain pipe 611 penetrates the surface of the support plate 605 and is connected to the nozzle 609 via a pipe connector 610. A drain valve 608 is provided on the drain pipe 611. When the worker applies wastewater treatment agent to the wastewater, the worker adds the wastewater treatment agent into the storage tank 603 through the addition pipe 618. The worker starts the first geared motor 113 on the moving mechanism 1 and opens the drain valve 608 on the drain pipe 611. The start of the first geared motor 113 will drive the first rotating shaft 107 to rotate forward or backward. Because the external thread on the outer wall of the first rotating shaft 107 is threadedly engaged with the threaded hole 112 on the moving plate 111, the unit is connected to the first geared motor 114 via a coupling.Therefore, when the first rotating shaft 107 rotates forward or backward, the moving plate 111 will move linearly in the Z-axis direction. This linear movement of the moving plate 111 in the Z-axis direction will drive the treatment agent dispensing mechanism 6 to move linearly in the Z-axis direction. This linear movement of the treatment agent dispensing mechanism 6 in the Z-axis direction will cause the nozzle 609 to move linearly in the Z-axis direction. Thus, the nozzle 609, moving linearly in the Z-axis direction, will spray the wastewater treatment agent onto the wastewater in the wastewater treatment tank 5. This allows for even spraying of the wastewater treatment agent onto the surface of the wastewater inside the wastewater treatment tank 5. Compared to existing manual spraying of wastewater treatment agents, this invention can evenly distribute the wastewater treatment agent onto the surface of the wastewater, avoiding the situation where the wastewater treatment agent is concentrated in a certain area, causing clumping and resulting in poor wastewater treatment effect. It also avoids the situation where some areas of the wastewater inside the wastewater treatment tank 5 are not sprayed with the wastewater treatment agent.

[0030] An inlet pipe 3 is installed above the front wall of the wastewater treatment tank 5, and an inlet valve 4 is installed on the inlet pipe 3. An outlet pipe 11 is installed below the rear wall of the wastewater treatment tank 5, and an outlet valve 10 is installed on the outlet pipe 11. An external thread is provided on the outer wall of the first rotating shaft 107, and the external thread on the outer wall of the first rotating shaft 107 is threadedly engaged with the threaded hole 112 on the moving plate 111. A third slider 110 is installed on both outer walls of the moving plate 111, and the other end of the third slider 110 is installed on the third slide rail 109. The third slider 110 and the third slide rail 109 are slidably connected. The cooperation between the third slider 110 and the third slide rail 109 can limit and guide the movement of the moving plate 111, avoiding... To prevent the movable plate 111 from rotating with the first rotating shaft 107, the third slide rail 109 is installed on the inner walls of both sides of the housing 105. The first reduction motor 113 is installed on the rear end wall of the mounting plate 114, and the output shaft of the first reduction motor 113 passes through the end wall of the mounting plate 114. Second connecting rods 108 are installed at the four corners of the front wall of the mounting plate 114, and the other end of the second connecting rods 108 is installed on the rear end wall of the housing 105. The first protective cover 101 is fixedly connected to the rear end wall of the housing 105 by fastening bolts. First rainproof louvers 102 are provided on both outer walls of the first protective cover 101. The first rainproof louvers 102 prevent wastewater from splashing onto the first protective cover. Inside the protective cover 101, a liquid outlet hole 106 is provided on the lower part of one side of the outer wall of the housing 105. The outer wall of the first connecting rod 104 is gap-connected to the wall of the rectangular slot 103. The second reduction motor 614 is mounted on the upper surface of the support block 615, which is mounted on the other side of the outer wall of the liquid storage tank 603 and is located inside the second protective cover 601. The second protective cover 601 is fixedly connected to the liquid storage tank 603 by fastening bolts. A second rainproof louver 602 is provided on one side of the outer wall of the second protective cover 601. The second rainproof louver 602 can prevent wastewater from splashing into the interior of the second protective cover 601. The top center of the liquid storage tank 603 is located at... A liquid inlet pipe 618 is provided, and an end cap 604 is installed at the top of the liquid inlet pipe 618. The inner wall of the end cap 604 is provided with internal threads, and the outer wall of the liquid inlet pipe 618 is provided with external threads. The internal threads on the end cap 604 and the external threads on the liquid inlet pipe 618 are threadedly engaged. Because the internal threads on the end cap 604 and the external threads on the liquid inlet pipe 618 are threadedly engaged, it is convenient for workers to disassemble and assemble the end cap. The front and rear ends of both sides of the lower surface of the support plate 605 are connected to the first slider 607 through the fourth connecting rod 606. The bottom end of the first slider 607 is installed on the first slide rail 7, and the first slider 607 and the first slide rail 7 are slidably connected. The first slide rail 7 is installed on both sides of the top of the wastewater treatment tank 5.One side of the lower surface of the support plate 605 is connected to the second slider 613 via a third connecting rod 612. The bottom end of the second slider 613 is mounted on the second slide rail 8, and the second slider 613 and the second slide rail 8 are slidably connected. The coordinated arrangement of the first slider 607, the first slide rail 7, the second slider 613, and the second slide rail 8 enhances the stability of the nozzle 609 when moving in the Z-axis direction. The second slide rail 8 is mounted on the top of the second mounting base 9.

[0031] It should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wastewater treatment agent application device for wastewater treatment, characterized in that, Includes a first mounting base (2) and a second mounting base (9): the first mounting base (2) and the second mounting base (9) are installed on the outer walls of both sides of the wastewater treatment tank (5), and a moving mechanism (1) is installed on the top of the first mounting base (2), and a treatment agent spreading mechanism (6) is provided on the moving mechanism (1). The moving mechanism (1) includes a first protective cover (101), a first rainproof louver (102), a rectangular slot (103), a first connecting rod (104), a housing (105), a liquid outlet slot (106), a first rotating shaft (107), a second connecting rod (108), a third slide rail (109), a third slider (110), a moving plate (111), a threaded hole (112), a first geared motor (113), and a mounting plate (114). The moving plate (111) is provided inside the housing (105). A threaded hole (112) is provided at the center of the end wall of the moving plate (111). (112) A first rotating shaft (107) is installed inside. The first rotating shaft (107) is installed in the bearing on the front wall of the housing (105). The other end of the first rotating shaft (107) extends through the sealed bearing on the rear wall of the housing (105) to the interior of the first protective cover (101) and is connected to the first geared motor (113) through a coupling. The top of the moving plate (111) is equipped with a first connecting rod (104), and the other end of the first connecting rod (104) extends through the rectangular slot (103) on the top of the housing (105) and extends to the outside to connect with the support plate (605) on the treatment agent spreading mechanism (6). The treatment agent dispensing mechanism (6) includes a second protective cover (601), a second rainproof louver (602), a liquid storage tank (603), an end cap (604), a support plate (605), a fourth connecting rod (606), a first slider (607), a drain valve (608), a nozzle (609), a pipe connector (610), a drain pipe (611), a third connecting rod (612), a second slider (613), a second geared motor (614), a support block (615), a stirring rod (616), a second rotating shaft (617), and a liquid addition pipe (618). The liquid storage tank (603) is mounted on the upper surface of the support plate (605), and the second rotating shaft (617) is installed inside the liquid storage tank (603). The storage tank (603) is equipped with a stirring rod (616), and the stirring rod (616) is installed on the outer wall of the second rotating shaft (617). One end of the second rotating shaft (617) is installed in the sealed bearing on the outer wall of one side of the storage tank (603). The other end of the second rotating shaft (617) extends through the sealed bearing on the outer wall of the other side of the storage tank (603) to the inside of the second protective cover (601) and is connected to the second gear motor (614) through the coupling. The bottom end of the storage tank (603) is provided with a drain pipe (611). The bottom end of the drain pipe (611) penetrates the surface of the support plate (605) and is connected to the nozzle (609) through the pipe joint (610). A drain valve (608) is provided on the drain pipe (611).

2. The wastewater treatment agent application device according to claim 1, characterized in that, An inlet pipe (3) is provided above the front wall of the wastewater treatment tank (5), and an inlet valve (4) is provided on the inlet pipe (3). An outlet pipe (11) is provided below the rear wall of the wastewater treatment tank (5), and an outlet valve (10) is provided on the outlet pipe (11).

3. The wastewater treatment agent application device according to claim 1, characterized in that, The outer wall of the first rotating shaft (107) is provided with an external thread, and the external thread on the outer wall of the first rotating shaft (107) is threadedly engaged with the threaded hole (112) on the moving plate (111).

4. The wastewater treatment agent application device for wastewater treatment according to claim 1, characterized in that, The movable plate (111) has a third slider (110) installed on both outer walls. The other end of the third slider (110) is installed on the third slide rail (109), and the third slider (110) and the third slide rail (109) are slidably connected. The third slide rail (109) is installed on both inner walls of the housing (105).

5. The wastewater treatment agent application device according to claim 1, characterized in that, The first geared motor (113) is mounted on the rear end wall of the mounting plate (114), and the output shaft of the first geared motor (113) passes through the end wall of the mounting plate (114). The four corners of the front end wall of the mounting plate (114) are each equipped with a second connecting rod (108), and the other end of the second connecting rod (108) is mounted on the rear end wall of the housing (105). The first protective cover (101) is fixedly connected to the rear end wall of the housing (105) by fastening bolts. The outer walls on both sides of the first protective cover (101) are provided with first rainproof louvers (102). The lower side of the outer wall of the housing (105) is provided with a liquid outlet hole (106).

6. The wastewater treatment agent application device according to claim 1, characterized in that, The outer wall of the first connecting rod (104) and the wall of the rectangular slot (103) are connected by a gap.

7. The wastewater treatment agent application device according to claim 1, characterized in that, The second geared motor (614) is mounted on the upper surface of the support block (615), the support block (615) is mounted on the outer wall of the other side of the liquid storage tank (603), and the support block (615) is located inside the second protective cover (601). The second protective cover (601) is fixedly connected to the liquid storage tank (603) by fastening bolts. A second rainproof louver (602) is provided on one side of the outer wall of the second protective cover (601).

8. The wastewater treatment agent application device according to claim 1, characterized in that, A liquid filling pipe (618) is provided at the center of the top of the liquid storage tank (603). An end cap (604) is installed at the top of the liquid filling pipe (618). An internal thread is provided on the inner wall of the end cap (604), and an external thread is provided on the outer wall of the liquid filling pipe (618). The internal thread on the end cap (604) and the external thread on the liquid filling pipe (618) are connected by thread engagement.

9. The wastewater treatment agent application device for wastewater treatment according to claim 1, characterized in that, The front and rear ends of both sides of the lower surface of the support plate (605) are connected to the first slider (607) through the fourth connecting rod (606). The bottom end of the first slider (607) is installed on the first slide rail (7), and the first slider (607) and the first slide rail (7) are slidably connected. The first slide rail (7) is installed on both sides of the top of the wastewater treatment tank (5). One side of the lower surface of the support plate (605) is connected to the second slider (613) through the third connecting rod (612). The bottom end of the second slider (613) is installed on the second slide rail (8), and the second slider (613) and the second slide rail (8) are slidably connected. The second slide rail (8) is installed on the top of the second mounting base (9).

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