Environmental engineering wastewater treatment device

Abstract

The present invention belongs to the technical field of wastewater treatment equipment, and discloses an environmental engineering wastewater treatment device, including a base box, the base box is provided with a filter tank, a purification tank, a transmission chamber, a liquid medicine tank and a discharge tank, the filter tank is connected with a filter screen, a vibration motor, a spring and a collection tank; the transmission chamber is provided with a double output shaft motor, a first driven bevel gear, a moving bevel gear, a second driven bevel gear, a first eccentric cam and a second eccentric cam, the inner side of the purification tank is provided with a main pipe, a liquid drawing outer cylinder and a stirring assembly, the main pipe is connected with an elastic pressing cap and an extraction pipe, the elastic pressing cap is slidably abutted with the first eccentric cam, the liquid outer cylinder is connected with a piston assembly and a liquid guide pipe, the piston assembly is slidably abutted with the second eccentric cam, and the discharge tank is connected with an adsorption assembly and a discharge pipe. The present invention utilizes the filter tank to filter wastewater, adds additives through the liquid medicine tank, purifies wastewater in the purification tank, and adsorbs wastewater in the discharge tank, and has a good treatment effect on wastewater.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment equipment, in particular to an environmental engineering wastewater treatment device. Background Art

[0002] The composition of environmental engineering wastewater is complex and diverse, covering domestic wastewater, industrial wastewater, agricultural wastewater, etc. Among them, domestic wastewater mainly comes from people's daily life, such as kitchen washing, bathing, laundry and flushing toilets. Although the water quality is relatively stable, it contains a large number of bacteria and viruses; industrial wastewater varies in composition due to different industrial types, raw materials and production processes, and may contain a large amount of organic matter, toxic and harmful substances, etc.; agricultural wastewater is mainly composed of pesticide and fertilizer residues, which enter water bodies and soil through runoff and seepage.

[0003] Existing wastewater treatment equipment has a relatively simple treatment method for wastewater, and the treatment effect is not ideal; and when additives or gases are added to increase the treatment speed, the contact effect between the additives or gases and the wastewater is poor, which reduces the treatment efficiency and effect. Summary of the invention

[0004] The present invention is intended to provide an environmental engineering wastewater treatment device, in which a filter tank, a purification tank, a liquid medicine tank and a discharge tank are arranged in a base box, the filter tank is used to filter the wastewater, the filtered wastewater enters the purification tank, an additive for treating the wastewater is added through the liquid medicine tank, the wastewater and the additive are mixed in the purification tank by a stirring component to purify the wastewater, and the purified wastewater is discharged after adsorption in the discharge tank; the wastewater is filtered, purified and adsorbed, and the treatment effect of the wastewater is good. The problems in the background technology are solved.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A wastewater treatment device for environmental engineering, comprising a base box, the base box is provided with a filter tank, a purification tank, a transmission chamber, a liquid medicine tank and a discharge tank, the upper side of the filter tank is open, the filter tank is connected to a filter screen; the purification tank is communicated with the filter tank, and the communication port between the purification tank and the filter tank is arranged at the lower side of the filter screen; the transmission chamber is arranged on the upper side of the purification tank, the inner side of the transmission chamber is connected with a dual-output shaft motor and a first driven bevel gear, the two output shafts of the dual-output shaft motor are respectively fixedly connected with a stirring assembly and a driving bevel gear, the stirring assembly is arranged on the inner side of the purification tank, the driving bevel gear The moving bevel gear and the first driven bevel gear are meshed with each other; the first driven bevel gear is coaxially fixedly connected with the first eccentric cam, the inner side of the purification tank is connected with a main pipe, the upper end of the main pipe is sealed and connected with an elastic pressing cap, the elastic pressing cap is slidably abutted with the first eccentric cam, the lower end of the main pipe is arranged on the inner side of the purification tank, and the middle part of the main pipe is connected with an extraction pipe, the liquid outlet end of the extraction pipe is connected with the discharge tank, the inner side of the discharge tank is connected with an adsorption component, and the discharge tank is also connected with a discharge pipe; the medicine liquid tank is connected with the purification tank, and the upper end of the medicine liquid tank is connected with a medicine inlet pipe.

[0007] Furthermore, a second driven bevel gear that is rotatably connected to the transmission chamber and meshes with the active bevel gear is coaxially fixedly connected to a second eccentric cam; a liquid drawing outer cylinder is fixedly connected to the purification tank, a piston assembly is slidably and sealingly connected to the liquid drawing outer cylinder, the piston assembly is slidably abutted against the second eccentric cam, and the liquid drawing outer cylinder is connected to a liquid guide tube via a three-way pipe, and the liquid inlet end and the liquid outlet end of the liquid guide tube are respectively arranged on the inner sides of the liquid pool and the purification tank.

[0008] Furthermore, the liquid inlet and outlet ends of the liquid guide tube are both connected to liquid one-way valves. The liquid one-way valve at the liquid inlet end of the liquid guide tube controls the liquid to flow one-way from the medicine liquid pool to the inner side of the liquid drawing outer cylinder, and the liquid one-way valve at the liquid outlet end of the liquid guide tube controls the liquid to flow one-way from the inner side of the liquid drawing outer cylinder to one side of the purification pool.

[0009] Furthermore, the stirring assembly is arranged between the liquid outlet end of the liquid guiding tube and the lower end of the main tube.

[0010] Furthermore, the annular end faces of the first eccentric cam and the second eccentric cam are both provided with annular grooves in the shape of a "convex" character, and the piston assembly and the elastic pressing cap are both connected with connecting blocks arranged in cooperation with the annular grooves, and the connecting blocks are slidably arranged on the inner side of the annular grooves.

[0011] Furthermore, the filter screen is rotatably connected to the filter tank, and the filter screen is arranged to be tilted downward; the filter tank is connected to a vibration motor, and the output end of the vibration motor is connected to the filter screen.

[0012] Furthermore, the filter screen is provided with a guide groove inclined downward, the filter pool is also connected to a collecting groove, and the collecting groove is arranged on the lower side of the lower end surface of the filter screen, and the collecting groove is detachably connected to a shielding member.

[0013] Furthermore, the side wall of the filter tank is connected to a spring via a universal ball set, and the free end of the spring is connected to the lower end surface of the filter screen.

[0014] Furthermore, the drug inlet pipe and the discharge pipe are both connected with control valves.

[0015] Furthermore, the adsorption component includes a gravel layer plate, an activated carbon plate and a geotextile plate in sequence from top to bottom, and the liquid outlet end of the extraction pipe is arranged at the upper end of the adsorption component, and the liquid inlet end of the discharge pipe is arranged at the lower end of the adsorption component.

[0016] The principle and beneficial effects of the technical solution are:

[0017] 1. An environmental engineering wastewater treatment device provided by the present invention comprises a filter tank, a purification tank, a transmission chamber, a medicine liquid tank and a discharge tank arranged in a base box, the upper side of the filter tank is opened, and a filter screen is connected to the inner side thereof, the wastewater to be treated enters the filter tank through the opening to be filtered and treated, and the impurities in the wastewater are filtered and screened out; the filtered wastewater enters the purification tank, the medicine liquid tank is connected to the purification tank, and the upper end thereof is connected to a medicine inlet pipe, and the additive for purifying the wastewater enters the purification tank through the medicine liquid tank and is mixed with the wastewater to perform chemical purification treatment on the water; a dual-output shaft motor is connected in the transmission chamber, a stirring assembly and a main pipe are connected in the purification tank, the stirring assembly is connected to one of the output shafts of the dual-output shafts, and the operation of the dual-output shaft motor drives the stirring assembly to rotate to mix the wastewater with the additive; the other output shaft of the dual-output shaft motor is transmission-connected to the first biased gear through a bevel gear set (a driving bevel gear and a first driven bevel gear) The double-output shaft motor drives the first eccentric cam to rotate, and the rotation of the first eccentric cam will periodically press and pull back the elastic pressing cap. The lower end of the main pipe is arranged in the purification tank, and the middle part of the main pipe is connected with the extraction pipe. When the elastic pressing cap is pressed, the gas in the main pipe is discharged. When the elastic pressing cap is pulled back, under the action of air pressure, the water in the purification room is extracted through the extraction pipe and enters the discharge tank. After being adsorbed by the adsorption component, it is discharged from the discharge pipe. Among them, the two ends of the double-output shaft motor are respectively connected with the stirring component and the first eccentric cam. The double-output shaft motor is started, so that the stirring component and the elastic pressing cap act at the same time, that is, the wastewater in the purification tank is extracted while being stirred, ensuring that the extracted wastewater is fully mixed with the additive and treated, and ensuring the treatment effect of the entire treatment device on the wastewater.

[0018] 2. An environmental engineering wastewater treatment device provided by the present invention has a second driven bevel gear meshing with the driving bevel gear connected in a transmission chamber, the second driven bevel gear is coaxially fixedly connected to the second eccentric cam, and is connected to a liquid drawing outer cylinder in a purification tank, the inner side of the liquid drawing outer cylinder is slidingly sealed and connected to a piston assembly, the interaction between the two is equivalent to a syringe, and the piston assembly is slidingly abutted against the second eccentric cam, the dual output shaft motor is running, and the second eccentric cam is driven to rotate under the action of the bevel gear set (the driving bevel gear and the second driven bevel gear), the rotation of the second eccentric cam will periodically press and pull back the piston assembly, so that it slides periodically on the inner side of the liquid drawing outer cylinder, and the liquid drawing outer cylinder is connected to the piston assembly through a three-way pipe. The liquid inlet and outlet ends are respectively connected to the liquid guide tubes on the inner sides of the medicine liquid pool and the purification pool. When the piston assembly is pressed downward for the first time, the water and gas inside the liquid guide tube are discharged. When the piston assembly is pulled back, the liquid medicine mixed with additives in the medicine liquid pool and the wastewater in the purification pool are "sucked into" the inner side of the liquid drawing outer tube under the action of atmospheric pressure (the pumping principle of the syringe). When the piston assembly is pressed downward again, the mixed solution of the liquid medicine mixed with additives and the wastewater inside is discharged into the medicine liquid pool and the purification pool. In the process of continuous absorption and discharge, the mixed solutions continuously collide with each other under the action of the momentum of the flowing water body, thereby realizing hydraulic stirring and improving the mixing effect of the liquid medicine mixed with additives and the wastewater. Among them, a liquid one-way valve is connected at the liquid inlet end of the liquid guide tube to control the one-way flow of liquid from the medicine liquid pool to the inner side of the liquid drawing outer cylinder, and a liquid one-way valve is connected at the liquid outlet end to control the one-way flow of liquid from the inner side of the liquid drawing outer cylinder to the purification tank side, so that the liquid drawing outer cylinder only "sucks in" liquid from the medicine liquid pool and only discharges medicine liquid into the purification tank, further improving the mixing effect and efficiency of medicine liquid and wastewater.

[0019] 3. The environmental engineering wastewater treatment device provided by the present invention has a stirring function of the stirring component in the purification tank, a mixing function of the liquid-drawing outer cylinder in the purification tank, and a pumping function of the main pipe in the purification tank. The three are connected to the dual-output shaft motor through the transmission component. The dual-output shaft motor runs to drive the three to move simultaneously. The functions of the three are linked, so that the water drawn out is effectively purified. The stirring component is arranged between the liquid outlet end of the liquid guide tube and the lower end of the main pipe. Combined with the flow of the liquid, the liquid mixed with additives needs to reach the main pipe after passing through the stirring component, avoiding The medicine liquid without being mixed with additives is directly sucked out, ensuring the contact time between the medicine liquid mixed with additives and the wastewater, and improving the purification effect of the wastewater; a "convex"-shaped annular groove is provided on the annular end faces of the first eccentric cam and the second eccentric cam, and a connecting block that is connected to the piston assembly and the elastic pressing cap and is arranged in cooperation with the annular groove makes it possible for the interacting parts (the first eccentric cam and the elastic pressing cap, the second eccentric cam and the piston assembly) to have a guiding and limiting effect on their relative movement during the relative movement, and the uniformity and stability during the relative movement are good.

[0020] 4. The present invention provides an environmental engineering wastewater treatment device, in which a filter screen is rotatably connected to a filter tank, and a vibration motor connected to the filter screen is connected to the inner side of the filter tank. The operation of the vibration motor drives the filter screen to vibrate, thereby reducing the probability that the filter opening of the filter screen is blocked by impurities; the filter screen is tilted downward, and a guide groove is provided on the filter screen, and a collecting groove is connected to the lower side thereof, so that when the filter screen vibrates under the action of the vibration motor, impurities filtered out of its upper surface can fall along its surface or the guide groove into the collecting groove and be collected, thereby avoiding impurities from blocking the filter opening and improving the filtering effect and efficiency of sewage; a spring is connected to the side wall of the filter tank through a universal ball set, and the free end of the spring is connected to the lower end face of the filter screen, and the spring can not only play a certain supporting role on the filter screen to ensure its filtering functionality, but also play a vibration reduction and vibration elimination role on the filter screen, thereby realizing the protection of the vibration motor and the filter screen.

[0021] 5. The present invention provides an environmental engineering wastewater treatment device, in which both the drug inlet pipe and the discharge pipe are connected to the control valve, which is convenient for controlling the addition of additives and the discharge of water; the adsorption component is provided with a gravel layer plate, an activated carbon plate and a geotextile plate in sequence from top to bottom, and the liquid outlet end of the extraction pipe is arranged at the upper end of the adsorption component, and the liquid inlet end of the discharge pipe is arranged at the lower end of the adsorption component, and the water extracted into the discharge chamber is subjected to triple adsorption treatment, which further improves the treatment effect of the sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of an environmental engineering wastewater treatment device of the present invention;

[0023] Figure 2 This is a front view of an environmental engineering wastewater treatment device of the present invention;

[0024] Figure 3 for Figure 2 Sectional view of AA in the middle;

[0025] Figure 4 for Figure 2 Cross-sectional view of the middle BB;

[0026] Figure 5 This is a schematic diagram of the internal structure of an environmental engineering wastewater treatment device of the present invention;

[0027] Figure 6 It is a structural schematic diagram of a purification tank and a transmission room of an environmental engineering wastewater treatment device of the present invention;

[0028] Figure 7 This is a front view of a purification tank and a transmission room of an environmental engineering wastewater treatment device of the present invention;

[0029] Figure 8 for Figure 7 Cross-sectional view of CC.

[0030] The names of the corresponding marks in the accompanying drawings are:

[0031] Base box 1, filter tank 2, purification tank 3, transmission chamber 4, medicine liquid tank 5, discharge tank 6, collection tank 7, shielding member 8, medicine inlet pipe 9, adsorption assembly 10, discharge pipe 11, vibration motor 12, filter screen 13, spring 14, dual output shaft motor 15, stirring assembly 16, driving bevel gear 17, first driven bevel gear 18, first eccentric cam 19, elastic pressing cap 20, main pipe 21, extraction pipe 22, second driven bevel gear 23, second eccentric cam 24, liquid drawing outer cylinder 25, piston assembly 26, liquid guide tube 27. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments:

[0033] like Figures 1 to 8 As shown, an environmental engineering wastewater treatment device comprises a base box 1, the base box 1 is provided with a filter tank 2, a purification tank 3, a transmission chamber 4, a liquid medicine tank 5 and a discharge tank 6, the upper side of the filter tank 2 is open, the filter tank 2 is connected with a filter screen 13, a vibration motor 12, a spring 14 and a collecting tank 7, the filter screen 13 is rotatably connected to the filter tank 2, and the filter screen 13 is arranged obliquely downward, the upper surface of the filter screen 13 is provided with a guide groove inclined downward, the collecting tank 7 is arranged at the lower side of the lower end surface of the filter screen 13, the collecting tank 7 is detachably connected with a shielding member 8, the output end of the vibration motor 12 is connected to the upper surface of the filter screen 13, the spring 14 is connected to the side wall of the filter tank 2 through a universal ball set, and the free end of the spring 14 is connected to the lower end surface of the filter screen 13; the purification tank 3 is connected to the filter tank 2, and the connecting port between the purification tank 3 and the filter tank 2 is arranged at the lower side of the filter screen 13;

[0034] The transmission chamber 4 is arranged on the upper side of the purification tank 3, and the inner side of the transmission chamber 4 is connected with a dual-output shaft motor 15, a first driven bevel gear 18 and a second driven bevel gear 23. The two output shafts of the dual-output shaft motor 15 are respectively fixedly connected with a stirring assembly 16 and a driving bevel gear 17. The stirring assembly 16 is rotatably arranged on the inner side of the purification tank 3, and the first driven bevel gear 18 and the second driven bevel gear 23 are respectively meshed with the left and right sides of the driving bevel gear 17; the first driven bevel gear 18 is coaxially fixedly connected with a first eccentric cam 19, and the second driven bevel gear 23 is coaxially fixedly connected with a second eccentric cam 24. The inner side of the purification tank 3 is connected with a main pipe 21 and a liquid-drawing outer cylinder 25. The upper end of the main pipe 21 is sealed with an elastic pressing cap 20, and the elastic pressing cap 20 is slidably abutted with the first eccentric cam 19. The liquid-drawing outer cylinder 25 is slidably and sealedly connected with a piston assembly 26, and the piston assembly 26 is slidably abutted with the second eccentric cam 24; wherein, the first The annular end surfaces of the eccentric cam 19 and the second eccentric cam 24 are both provided with annular grooves in the shape of a "convex" character. The piston assembly 26 and the elastic pressing cap 20 are both connected with a connecting block arranged in cooperation with the annular groove, and the connecting block is slidably arranged on the inner side of the annular groove; the liquid pool 5 is connected with the purification pool 3, and the upper end of the liquid pool 5 is connected with the medicine inlet pipe 9; the liquid drawing outer cylinder 25 is connected with the liquid guide pipe 27 through a three-way pipe, and the liquid inlet end and the liquid outlet end of the liquid guide pipe 27 are respectively arranged on the liquid pool 5 and the purification pool 3. The inner side of the purification pool 3, and the liquid inlet end and the liquid outlet end of the liquid guide tube 27 are both connected with a liquid one-way valve, the liquid one-way valve at the liquid inlet end of the liquid guide tube 27 controls the liquid to flow from the liquid pool 5 to the inner side of the liquid drawing outer cylinder 25 in one direction, and the liquid one-way valve at the liquid outlet end of the liquid guide tube 27 controls the liquid to flow from the inner side of the liquid drawing outer cylinder 25 to the purification pool 3 side in one direction; the lower end of the main pipe 21 is arranged on the inner side of the purification pool 3, and the stirring assembly 16 is arranged between the liquid outlet end of the liquid guide tube 27 and the lower end of the main pipe 21;

[0035] The middle part of the main pipe 21 is connected with an extraction pipe 22, the liquid outlet end of the extraction pipe 22 is connected with the discharge tank 6, the inner side of the discharge tank 6 is connected with an adsorption assembly 10, and the discharge tank 6 is also connected with a discharge pipe 11, wherein the adsorption assembly 10 includes a gravel layer plate, an activated carbon plate and a geotextile plate from top to bottom, and the liquid outlet end of the extraction pipe 22 is arranged at the upper end of the adsorption assembly 10, and the liquid inlet end of the discharge pipe 11 is arranged at the lower end of the adsorption assembly 10; the drug inlet pipe 9 and the discharge pipe 11 are both connected with a control valve.

[0036] The specific implementation process is as follows:

[0037] When the purification device is used, the additive for purifying wastewater is added into the liquid medicine pool 5 through the medicine inlet pipe 9, the wastewater flows into the filter pool 2 through the opening on the upper side of the filter pool 2, the wastewater is filtered by the filter screen 13, the vibration motor 12 is started, the vibration motor 12 drives the filter screen 13 to vibrate, so that the impurities on the upper surface slide downward to the collection tank 7 and are collected; the dual output shaft motor 15 is started, the dual output shaft motor 15 drives the stirring assembly 16 to rotate, and the mixed solution in the purification pool 3 is mechanically stirred, the dual output shaft motor 15 drives the piston assembly 26 to move up and down periodically, so that the liquid-drawing outer cylinder 25 continuously absorbs and discharges liquid to hydraulically stir the mixed solution in the purification pool 3, the dual output shaft motor 15 drives the elastic pressing cap 20 to continuously press and pull back, so that the main pipe 21 extracts the water in the purification pool 3 into the discharge pool 6 through the extraction pipe 22, and the adsorption assembly 10 in the discharge pool 6 performs three adsorption actions on the water inside, and finally discharges the water through the discharge pipe 11, that is, the primary treatment of the environmental engineering wastewater is completed.

[0038] The operation of the vibration motor 12 drives the filter 13 to vibrate, thereby reducing the probability that the filter opening of the filter 13 is blocked by impurities; when the filter 13 vibrates under the action of the vibration motor 12, the impurities filtered out on its upper surface can fall along its surface or the guide groove into the collecting groove 7 and be collected, thereby preventing the impurities from blocking the filter opening and improving the filtering effect and efficiency of the sewage; the spring 14 plays a certain supporting role on the filter 13, ensuring its filtering functionality, and also plays a role in reducing and absorbing vibration on the filter 13, thereby protecting the vibration motor 12 and the filter 13;

[0039] The operation of the dual-output shaft motor 15 drives the second eccentric cam 24 to rotate, and periodically presses and pulls back the piston assembly 26. When the piston assembly 26 is pressed downward for the first time, the water and gas inside it are discharged. When the piston assembly 26 is pulled back, the liquid medicine mixed with additives in the liquid medicine pool 5 and the wastewater in the purification pool 3 are "sucked into" the inner side of the liquid drawing outer cylinder 25. When the piston assembly 26 is pressed downward again, the mixed solution of the liquid medicine mixed with additives and the wastewater inside is discharged into the liquid medicine pool 5 and the purification pool 3. In the process of continuous absorption and discharge, the mixed solutions continuously collide with each other under the action of the momentum of the flowing water body, realizing liquid The double-output shaft motor 15 drives the stirring assembly 16 to rotate to mix the wastewater with the additives. The other output shaft of the double-output shaft motor 15 is connected to the first eccentric cam 19 through a bevel gear set (active bevel gear 17 and first driven bevel gear 18). The double-output shaft motor 15 drives the first eccentric cam 19 to rotate, which periodically presses and pulls back the elastic pressing cap 20. When the pressing cap 20 is pressed, the gas in the main pipe 21 is discharged. When the elastic pressing cap 20 is pulled back, the water in the purification room is extracted through the extraction pipe 22 under the action of air pressure and enters the discharge pool 6. The stirring action of the stirring component 16 in the purification pool 3, the mixing action of the liquid drawing outer cylinder 25 in the purification pool 3, and the pumping action of the main pipe 21 in the purification pool 3 are all connected to the dual-output shaft motor 15 through the transmission component. The operation of the dual-output shaft motor 15 drives the three to move simultaneously. The functions of the three are linked, so that the water extracted is effectively purified. The stirring component 16 is arranged on the liquid guide pipe 2 Between the liquid outlet end of 7 and the lower end of the main pipe 21, combined with the flow of the liquid, the liquid mixed with additives needs to reach the main pipe 21 after passing through the stirring component 16, so as to avoid the liquid mixed with additives being directly sucked out, ensure the contact time between the liquid mixed with additives and the wastewater, and improve the purification effect of the wastewater; a "convex"-shaped annular groove is provided on the annular end surface of the first eccentric cam 19 and the second eccentric cam 24, and a connecting block arranged in cooperation with the annular groove is connected to the piston assembly 26 and the elastic pressing cap 20, and the connecting block and the annular groove play a guiding and limiting role in their relative movement, and the uniformity and stability during the relative movement are good;

[0040] The adsorption assembly 10 performs triple adsorption treatment on the water drawn into the discharge chamber, thereby improving the treatment effect on the sewage. The drug inlet pipe 9 and the discharge pipe 11 are both connected to the control valve, which is convenient for controlling the addition of additives and the discharge of water.

[0041] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the technical solution of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An environmental engineering wastewater treatment device, characterized in that: The invention comprises a base box, wherein the base box is provided with a filter tank, a purification tank, a transmission chamber, a liquid medicine tank and a discharge tank, wherein the upper side of the filter tank is open, and the filter tank is connected with a filter screen; the purification tank is communicated with the filter tank, and the communication port between the purification tank and the filter tank is arranged at the lower side of the filter screen; the transmission chamber is arranged at the upper side of the purification tank, and the inner side of the transmission chamber is connected with a dual-output shaft motor and a first driven bevel gear, and the two output shafts of the dual-output shaft motor are respectively fixedly connected with a stirring component and an active bevel gear, and the stirring component is arranged at the inner side of the purification tank, and the active bevel gear is connected with the The first driven bevel gears are meshed with each other; the first driven bevel gear is coaxially fixedly connected with the first eccentric cam, the inner side of the purification tank is connected with a main pipe, the upper end of the main pipe is sealed and connected with an elastic pressing cap, the elastic pressing cap is slidably abutted with the first eccentric cam, the lower end of the main pipe is arranged on the inner side of the purification tank, and the middle part of the main pipe is connected with an extraction pipe, the liquid outlet end of the extraction pipe is connected with the discharge tank, the inner side of the discharge tank is connected with an adsorption component, and the discharge tank is also connected with a discharge pipe; the liquid medicine tank is connected with the purification tank, and the upper end of the liquid medicine tank is connected with a medicine inlet pipe; The transmission chamber is also rotatably connected with a second driven bevel gear that meshes with the driving bevel gear, and the second driven bevel gear is coaxially fixedly connected with a second eccentric cam; the purification tank is fixedly connected with a liquid-drawing outer cylinder, and the liquid-drawing outer cylinder is slidably and sealingly connected with a piston assembly, and the piston assembly is slidably abutted with the second eccentric cam, and the liquid-drawing outer cylinder is connected with a liquid guide tube through a three-way pipe, and the liquid inlet end and the liquid outlet end of the liquid guide tube are respectively arranged on the inner sides of the liquid medicine tank and the purification tank; The stirring assembly is arranged between the liquid outlet end of the liquid guiding tube and the lower end of the main tube; The annular end surfaces of the first eccentric cam and the second eccentric cam are both provided with annular grooves in the shape of a "convex" character, and the piston assembly and the elastic pressing cap are both connected with connecting blocks arranged in cooperation with the annular grooves, and the connecting blocks are slidably arranged on the inner side of the annular grooves.

2. The environmental engineering wastewater treatment device according to claim 1, characterized in that: The liquid inlet and outlet ends of the liquid guide tube are both connected to a liquid one-way valve. The liquid one-way valve at the liquid inlet end of the liquid guide tube controls the liquid to flow one-way from the medicine liquid pool to the inner side of the liquid drawing outer cylinder, and the liquid one-way valve at the liquid outlet end of the liquid guide tube controls the liquid to flow one-way from the inner side of the liquid drawing outer cylinder to one side of the purification pool.

3. The environmental engineering wastewater treatment device according to claim 1, characterized in that: The filter screen is rotatably connected to the filter pool, and the filter screen is arranged to be tilted downward; the filter pool is connected to a vibration motor, and the output end of the vibration motor is connected to the filter screen.

4. The environmental engineering wastewater treatment device according to claim 3 is characterized in that: The filter screen is provided with a guide groove inclined downward, and the filter pool is also connected with a collecting groove, and the collecting groove is arranged on the lower side of the lower end surface of the filter screen, and the collecting groove is detachably connected with a shielding member.

5. The environmental engineering wastewater treatment device according to claim 3 is characterized in that: The side wall of the filter tank is connected with a spring through a universal ball set, and the free end of the spring is connected to the lower end surface of the filter screen.

6. The environmental engineering wastewater treatment device according to claim 1, characterized in that: The medicine inlet pipe and the discharge pipe are both connected with control valves.

7. The environmental engineering wastewater treatment device according to claim 1, characterized in that: The adsorption component includes a gravel layer plate, an activated carbon plate and a geotextile plate in order from top to bottom, and the liquid outlet end of the extraction pipe is arranged at the upper end of the adsorption component, and the liquid inlet end of the discharge pipe is arranged at the lower end of the adsorption component.

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