A kind of solid-liquid separation device for aquaculture wastewater
By designing a solid-liquid separation device for breeding wastewater, and using the liquid level impregnation mechanism of screw transport pump and screen cylinder, the problem of difficult separation between liquid and solid in breeding wastewater is solved, efficient liquid separation and solid matter treatment are achieved, and fermentation effect is improved.
Patent Information
- Application Number
- CN202421163471.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-24
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-05-24
AI Technical Summary
The prior art is difficult to effectively separate liquids and solids in aquaculture wastewater, especially when the liquid content is too high, which affects the fermentation effect.
A solid-liquid separation device for breeding wastewater is designed, and the wastewater is pumped into the separation cylinder through a screw transport pump. The liquid level gradually rises and impregnates the screen cylinder. The liquid is separated through the filter hole, and the separation efficiency is improved by using the liquid level sensor and the filling member.
The liquid separation of most of the aquaculture wastewater is achieved, the liquid content of the solid-liquid mixture is reduced, the fermentation effect is improved, and the subsequent treatment of solid matter is facilitated.
Smart Images
Figure CN222709113U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of breeding equipment, and in particular relates to a solid-liquid separation device for breeding wastewater. Background Art
[0002] In recent years, with the continuous expansion of the scale of my country's livestock production, the amount of feces and wastewater has also increased significantly, and a series of environmental problems caused by this are also attracting people's attention. Livestock wastewater is a kind of organic wastewater with relatively complex components. High organic compound content and high ammonia and phosphorus content are its main water quality characteristics. In addition, the wastewater is dark black, has a strong pungent odor, and contains a large amount of suspended matter, which also makes it difficult to treat.
[0003] Since aquaculture wastewater is rich in nitrogen and phosphorus nutrients, high in organic matter content and low in toxicity, it has the inherent advantage of resource utilization. If aquaculture wastewater is mixed and fermented, the effect will be very poor, especially when the liquid content in the solid-liquid mixture is too high, which is not conducive to fermentation. However, the solid-liquid mixed sludge with reduced water content will have a better fermentation effect than the mixture of solid matter and excessive water content. Utility Model Content
[0004] In order to solve the above technical problems, the utility model provides a solid-liquid separation device for aquaculture wastewater, which pumps the aquaculture wastewater into a separation cylinder through a screw conveying pump, and the gradually rising liquid level soaks the screen liquid cylinder, and the liquid in it is sent out of the liquid outlet valve through a conveying pipe, thereby reducing the liquid content in the aquaculture wastewater. After the solid matter remaining after the liquid is screened out accumulates sufficiently, the solid-liquid mixed mud is pumped out through the reverse rotation of the screw conveying pump, thereby realizing the separation of most of the liquid in the aquaculture wastewater.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0006] A solid-liquid separation device for aquaculture wastewater comprises a separation cylinder, a screw conveying pump and a sieve liquid component, the lower end opening of the separation cylinder is connected to the screw conveying pump, the sieve liquid component comprises a top cover, a sieve liquid cylinder, a conveying pipe, a liquid outlet valve, a liquid level sensor and a filling component, the sieve liquid cylinder is a cylindrical structure opening upward, the upper end of the sieve liquid cylinder passes through the top cover, and a plurality of filter holes are provided on the outer side wall of the sieve liquid cylinder located at the lower end of the top cover, one end of the conveying pipe is connected to the outer side wall of the sieve liquid cylinder under the top cover, and the other end of the conveying pipe passes through the outer side wall of the separation cylinder and is connected to the liquid outlet valve, and the top cover is detachably connected to the upper end opening of the separation cylinder; the upper and lower ends of the liquid level sensor respectively pass through the separation cylinder, and the upper end of the liquid level sensor is higher than the conveying pipe; the filling component comprises an air inlet pipe and an air bag, one end of the air inlet pipe passes through the separation cylinder, and the other end of the air inlet pipe is connected to the air bag, and the filling component comprises two groups, and the air bags of the two groups of the filling components are not on the same horizontal plane.
[0007] The aquaculture wastewater solid-liquid separation device adopts this structure, and the lower end of the separation cylinder is connected to the screw conveying pump. The inlet end of the screw conveying pump is provided with a flange, which is connected to the external inlet port. The external aquaculture wastewater is pumped into the separation cylinder by the forward rotation of the screw conveying pump. Continuous pumping will gradually increase the liquid level of the aquaculture wastewater in the separation cylinder. In order to achieve the separation of the liquid in the aquaculture wastewater, a sieve cylinder is arranged on the top cover, and a plurality of filter holes are arranged on the outer wall of the part of the sieve cylinder under the top cover. When the aquaculture wastewater with a continuously rising liquid level immerses the sieve cylinder, the liquid in the aquaculture wastewater will gradually penetrate into the sieve cylinder, and liquid can penetrate into the sieve cylinder during the continuous rising process of the aquaculture wastewater. Even if the solid covers the filter holes at the lower end of the sieve cylinder, making it impossible for the lower end to filter the liquid well, solid-liquid separation can be performed through the gradually rising liquid level, and the pressure on the sieve cylinder can also be gradually increased through the height of the liquid level, so that the solid-liquid separation is more efficient.
[0008] The liquid entering the liquid screening cylinder will also gradually rise with the liquid level of the external aquaculture wastewater until it exceeds the horizontal plane of the transport pipe, and the liquid will be discharged by opening the liquid outlet valve connected to the transport pipe. Since the internal and external liquid levels of the liquid screening tube are connected, the liquid level inside the liquid screening cylinder will be lowered when the liquid outlet valve continues to discharge the liquid. The aquaculture wastewater continuously pumped into the separation cylinder will not only increase the speed of liquid penetration, but also compress the solid matter. In order to further compress the solid matter, a filling component is provided, and the air bag is connected to the air inlet pipe. The part of the air inlet pipe connected to the separation cylinder is connected to the air compressor, and gas is pumped into the air inlet pipe, so that the air bag is expanded by the action of air, and then pressure is applied to the solid matter around it, thereby increasing the pressure of the solid matter on the liquid screening cylinder and compressing the liquid to the greatest extent. The separation device is pressurized and separated, and two groups of air bags are arranged at different levels, so that pressure can be applied to solids at different positions. A liquid level sensor is arranged in the separation cylinder, and its upper end is higher than the horizontal plane of the conveying pipe. When the separation cylinder is compressed to a certain extent, the liquid level outside the sieve cylinder will be forced to be higher than the upper end of the liquid level sensor. At this time, an external reminder can be given to remind that the solids remaining in the separation cylinder are almost saturated and the solids can be exported. Therefore, the screw conveying pump is started in reverse to pump out the solid-liquid mixture in the separation cylinder. At this time, a part of the liquid still remaining in the sieve cylinder can seep out through the filter holes, and the infiltrated solids are more convenient to pump out. The device can separate most of the liquid in the aquaculture wastewater, and retain a part of the liquid in the aquaculture wastewater for subsequent fermentation.
[0009] Furthermore, the liquid screening cylinders include two groups, the two groups of liquid screening cylinders are vertically arranged in parallel, and one end of the transport pipe is connected to the two groups of liquid screening cylinders respectively.
[0010] Furthermore, it also includes a support assembly, which includes a support leg, a support plate and an adjustment leg. The upper end of the bracket is connected to the outer wall of the separation barrel, the screw conveying pump is connected to the support plate, and the adjustment leg is arranged at the bottom of the support plate.
[0011] Compared with the prior art, the utility model has the following advantages: by pumping aquaculture wastewater into the separation cylinder, the gradually rising water level of the aquaculture wastewater penetrates into the sieve liquid cylinder, the gradually rising water level can increase the pressure of the aquaculture wastewater on the sieve liquid cylinder, and press the liquid inside it into the filter holes to perform solid-liquid separation, continuous pumping can continuously compress the solid matter, and continuously press the liquid inside it into the sieve liquid cylinder, and the liquid level in the sieve liquid cylinder can be raised and overflow the transport pipe, and then the liquid can be discharged through the liquid outlet valve, and when the solid matter needs to be pumped out of the separation cylinder, the reverse screw transport pump can pump out the solid matter, and the liquid retained in the sieve liquid cylinder seeps out of the filter holes, soaking the solid matter for easy pumping out. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0013] Figure 1 It is a three-dimensional diagram of the utility model;
[0014] Figure 2 It is a top-down exploded schematic diagram of the utility model;
[0015] Figure 3 This is a bottom-up explosion diagram of the utility model;
[0016] Figure 4 It is a top view of the utility model;
[0017] Figure 5 For the utility model Figure 4 AA section view.
[0018] Among them: 1. separation cylinder; 2. screw delivery pump; 3. liquid screening assembly; 31. top cover; 32. liquid screening cylinder; 33. delivery pipe; 34. liquid outlet valve; 35. liquid level sensor; 36. filling component; 37. filter hole; 38. air inlet pipe; 39. air bag; 4. support assembly; 41. support foot; 42. support plate; 43. adjustment foot. DETAILED DESCRIPTION
[0019] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.
[0020] The specific implementation of the utility model will be described below in conjunction with the accompanying drawings:
[0021] like Figure 1-5 As shown, a solid-liquid separation device for aquaculture wastewater includes a separation cylinder 1, a screw delivery pump 2 and a sieve assembly 3. The lower end opening of the separation cylinder 1 is connected to the screw delivery pump 2. The sieve assembly 3 includes a top cover 31, a sieve cylinder 32, a delivery pipe 33, a liquid outlet valve 34, a liquid level sensor 35 and a filling member 36. The sieve cylinder 32 is a cylindrical structure with an upward opening. The upper end of the sieve cylinder 32 passes through the top cover 31. A plurality of filter holes 37 are arranged on the outer side wall of the sieve cylinder 32 at the lower end of the top cover 31. One end of the delivery pipe 33 is connected to the outer side wall of the sieve cylinder 32 under the top cover 31. Side wall, the other end of the delivery pipe 33 passes through the outer wall of the separation cylinder 1 and is connected to the liquid outlet valve 34, and the top cover 31 is detachably connected to the upper end opening of the separation cylinder 1; the upper and lower ends of the liquid level sensor 35 respectively pass through the separation cylinder 1, and the upper end of the liquid level sensor 35 is higher than the delivery pipe 33; the filling component 36 includes an air intake pipe 38 and an air bag 39, one end of the air intake pipe 38 passes through the separation cylinder 1, and the other end of the air intake pipe 38 is connected to the air bag 39, and the filling component 36 includes two groups, and the air bags 39 of the two groups of the filling components 36 are not on the same horizontal plane.
[0022] Furthermore, the liquid sieving cylinders 32 include two groups, the two groups of liquid sieving cylinders 32 are vertically arranged in parallel, and one end of the transport pipe 33 is connected to the two groups of liquid sieving cylinders 32 respectively.
[0023] Furthermore, it also includes a support component 4, which includes a support leg 41, a support plate 42 and an adjustment leg 43. The upper end of the bracket is connected to the outer wall of the separation cylinder 1, the screw conveying pump 2 is connected to the support plate 42, and the adjustment leg 43 is arranged at the bottom of the support plate 42.
[0024] Description of the working method of this utility model:
[0025] In the aquaculture wastewater solid-liquid separation device of this structure, the lower end of the separation cylinder 1 is connected to the screw conveying pump 2. The inlet end of the screw conveying pump 2 is provided with a flange plate, which is connected to the external inlet port. The external aquaculture wastewater is pumped into the separation cylinder 1 by the forward rotation of the screw conveying pump 2. Continuous pumping will gradually increase the liquid level of the aquaculture wastewater in the separation cylinder 1. In order to separate the liquid in the aquaculture wastewater, a sieve cylinder 32 is provided on the top cover 31. The sieve cylinder 32 is provided with several outer walls under the top cover 31. Dry filter holes 37. When the aquaculture wastewater with continuously rising liquid level immerses the sieve liquid cylinder 32, the liquid in the aquaculture wastewater will gradually seep into the sieve liquid cylinder 32, and liquid can seep into the sieve liquid cylinder 32 in the process of continuously rising aquaculture wastewater. Even if solids cover the filter holes 37 at the lower end of the sieve liquid cylinder 32, making it impossible to filter the liquid well at the lower end, solid-liquid separation can be carried out through the gradually rising liquid level, and the pressure on the sieve liquid cylinder 32 can be gradually increased through the height of the liquid level, making the solid-liquid separation more efficient.
[0026] The liquid entering the liquid screening cylinder 32 will also gradually rise with the liquid level of the external aquaculture wastewater until it exceeds the horizontal plane of the transport pipe 33, and the liquid will be discharged by opening the liquid outlet valve 34 connected to the transport pipe 33. Since the internal and external liquid levels of the liquid screening tube are connected, when the liquid outlet valve 34 continues to discharge the liquid, the liquid level inside the liquid screening cylinder 32 will be lowered. The aquaculture wastewater continuously pumped into the separation cylinder 1 can not only increase the speed of liquid penetration, but also compress the solid matter. In order to further compress the solid matter, a filling component 36 is provided, and an air bag 39 is connected to the air inlet pipe 38. The part of the air inlet pipe 38 connected to the separation cylinder 1 is connected to the air compressor. By pumping gas into the air inlet pipe 38, the air bag 39 is expanded by the action of air, and then pressurizes the solid matter around it, thereby increasing the pressure of the solid matter on the liquid screening cylinder 32 and compressing the liquid as much as possible. The separation is squeezed out to the maximum extent, and two groups of air bags 39 are set and arranged at different levels, so that pressure can be applied to solids at different positions. The liquid level sensor 35 is arranged in the separation cylinder 1, and its upper end is higher than the horizontal plane of the conveying pipe 33. When the separation cylinder 1 is compressed to a certain extent, the liquid level outside the sieve cylinder 32 will be forced to be higher than the upper end of the liquid level sensor 35. At this time, an external reminder can be given to remind that the solids remaining in the separation cylinder 1 are almost saturated and the solids can be exported. Therefore, the screw conveying pump 2 is started in reverse to pump out the solid-liquid mixture in the separation cylinder 1. At this time, a part of the liquid still remaining in the sieve cylinder 32 can seep out through the filter hole 37, and the infiltrated solids are more convenient to pump out. The device can separate most of the liquid in the aquaculture wastewater and retain a part of the liquid in the aquaculture wastewater for subsequent fermentation.
[0027] Moreover, at least two groups of liquid sieving cylinders 32 are arranged to increase the liquid separation efficiency. At the same time, a flange can be arranged at the upper end of the liquid sieving cylinder 32. The liquid in the liquid sieving cylinder 32 can be manually extracted by inserting a pipe into the liquid sieving cylinder 32, so that the liquid content in the final solid-liquid sludge can be manually controlled. In order to facilitate the adaptive installation of the device in the factory, a support assembly 4 is added, and the support foot 41 is arranged on the outer wall of the separation cylinder 1 to support and fix the separation cylinder 1, and the screw conveying pump 2 is arranged on the support plate 42, and the height is adjusted by the adjustment foot 43 under the support plate 42.
[0028] The beneficial effect of the utility model is that aquaculture wastewater is pumped into the separation cylinder 1, and the gradually rising water level of the aquaculture wastewater immerses the sieve liquid cylinder 32. The gradually rising water level can increase the pressure of the aquaculture wastewater on the sieve liquid cylinder 32, and press the liquid therein into the filter hole 37 to perform solid-liquid separation. Continuous pumping can continuously compress the solid matter and continuously press the liquid therein into the sieve liquid cylinder 32. After the liquid level in the sieve liquid cylinder 32 overflows the conveying pipe 33, the liquid can be discharged through the liquid outlet valve 34. When the solid matter needs to be pumped out of the separation cylinder 1, the reverse screw conveying pump 2 can pump the solid matter out, and the liquid retained in the sieve liquid cylinder 32 seeps out of the filter hole 37, soaking the solid matter for easy pumping out.
[0029] The above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.
Claims
1. A solid-liquid separation device for aquaculture wastewater, characterized in that: It includes a separation cylinder, a screw delivery pump and a liquid screening component. The lower end opening of the separation cylinder is connected to the screw delivery pump. The liquid screening component includes a top cover, a liquid screening cylinder, a delivery pipe and a liquid outlet valve. The liquid screening cylinder is an upwardly open cylindrical structure. The upper end of the liquid screening cylinder passes through the top cover. A plurality of filter holes are provided on the outer side wall of the liquid screening cylinder located at the lower end of the top cover. One end of the delivery pipe is connected to the outer side wall of the liquid screening cylinder under the top cover, and the other end of the delivery pipe passes through the outer side wall of the separation cylinder and is connected to the liquid outlet valve. The top cover is detachably connected to the upper end opening of the separation cylinder.
2. The aquaculture wastewater solid-liquid separation device according to claim 1, characterized in that: The liquid screening component further comprises a liquid level sensor. The upper and lower ends of the liquid level sensor respectively penetrate the separation cylinder, and the upper end of the liquid level sensor is higher than the transport pipe.
3. The aquaculture wastewater solid-liquid separation device according to claim 2, characterized in that: The liquid screening component further comprises a filling component, which comprises an air inlet pipe and an air bag. One end of the air inlet pipe penetrates the separation cylinder, and the other end of the air inlet pipe is connected to the air bag.
4. The aquaculture wastewater solid-liquid separation device according to claim 3, characterized in that: The filling components include two groups, and the air bags of the two groups of filling components are not on the same horizontal plane.
5. The aquaculture wastewater solid-liquid separation device according to claim 1, characterized in that: The liquid screening cylinders include two groups, the two groups of liquid screening cylinders are vertically and parallelly arranged, and one end of the conveying pipe is respectively connected to the two groups of liquid screening cylinders.
6. The aquaculture wastewater solid-liquid separation device according to claim 1, characterized in that: It also includes a support assembly, which includes a support foot, a support plate and an adjustment foot. The upper end of the support foot is connected to the outer side wall of the separation cylinder, the screw conveying pump is connected to the support plate, and the adjustment foot is arranged at the bottom of the support plate.