Efficient raw water pretreatment system

Abstract

The utility model relates to an efficient raw water pretreatment system which is characterized by comprising a natural sedimentation tank, a raw water inlet pipe, a medicament treatment tank, an upper support plate and an industrial water tank, a sedimentation inner cylinder is vertically fixed at the center in the natural sedimentation tank, and a sedimentation outer cylinder is fixedly sleeved on the outer side of the sedimentation inner cylinder; a flow guide channel is arranged between the outer wall of the inner precipitation cylinder and the inner wall of the outer precipitation cylinder, the lower end of the inner precipitation cylinder is supported and fixed at the bottom in the natural precipitation tank, a gap is formed between the lower end of the outer precipitation cylinder and the bottom in the natural precipitation tank, and the upper end of the inner precipitation cylinder is lower than the upper end of the outer precipitation cylinder. According to the utility model, impurities on the inner bottom surface of the medicament treatment pond can be completely flushed into the arc-shaped discharge chute through the matching of the bottom surface of the medicament treatment pond which is inclined leftwards and the flushing spray head, so that the impurities are discharged by utilizing the spiral discharge mechanism, and the aim of conveniently cleaning the medicament treatment pond is fulfilled by adopting the structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to raw water pretreatment technical field, specifically to a kind of efficient raw water pretreatment system. BACKGROUND

[0002] At present, the economy of eastern coastal area of China develops rapidly, and the demand for electricity is large, in order to meet the requirements of economic development and the improvement of people's living standards in this area, the state needs to invest huge capital in the construction of large-scale thermal power plants every year. The increase of the scale of thermal power plants also brings the increasing water treatment capacity of the whole power plant, and the water quality requirements of unit kilowatt water consumption index and raw water pretreatment are higher, and at the same time, factors such as land saving and environmental protection should also be considered.

[0003] At present, the water used by many large thermal power plants mainly includes condenser cooling water, cooling water for various auxiliary equipment, chemical make-up water, industrial water, domestic and fire-fighting water, ash removal water, desulfurization water and other water. When direct circulation is used, the condenser cooling water generally does not need to be pretreated, but when secondary circulation is used, this part of water changes into make-up water of the circulating water supply system, and the content of suspended solids in the water needs to be controlled to be not more than 5-10 mg / L, so raw water pretreatment is needed; the requirements for cooling water of auxiliary equipment and industrial water are basically the same as those for condenser cooling water; the water quality requirement for chemical make-up water is that the content of suspended solids should be not more than 2-5 mg / L; the water used for desulfurization and ash removal is currently used according to the principle of step-by-step water use, and recycled water is used; domestic water and fire-fighting water should meet the requirements of the current relevant specifications. At present, the make-up water of power plants is mostly river network and reservoir water near the power plant, and the sea water near the power plant is also used for secondary circulation. The content of suspended solids in such water changes seasonally and cannot meet the water quality requirements of power plant water, so the power plant generally has a purification station for pretreating raw water.

[0004] At present, the raw water pretreatment process of power plant usually selects natural sedimentation and mixed dosing. With long-term use, a large amount of impurities exist in the bottom of natural sedimentation tank and dosing tank, so the tank needs to be cleaned every period of time. However, the existing natural sedimentation tank and dosing tank are very troublesome to clean, not only time-consuming and labor-intensive, but also the cleaning effect is often very general, so it is particularly important to design a kind of efficient raw water pretreatment system to solve the above problems. SUMMARY

[0005] The utility model discloses a kind of efficient raw water pretreatment systems to solve above-mentioned problem, by the cooperation of the bottom surface of left oblique dosing tank and flush spray head can flush the impurities in the bottom surface of dosing tank into arc-shaped discharge chute, so as to discharge impurities using spiral discharge mechanism, by using this structure, the purpose of facilitating cleaning of dosing tank is achieved, and practicality is increased.

[0006] To solve the above technical problems, the utility model provides a kind of high-efficiency raw water pretreatment system, it is characterized by including natural sedimentation tank, raw water inlet pipe, medicament treatment pool, upper support plate and industrial water tank, the center of natural sedimentation tank is vertically fixed with sediment inner cylinder, sediment outer cylinder is fixed with the outside of sediment inner cylinder, flow guide passage is arranged between the outer wall of sediment inner cylinder and the inner wall of sediment outer cylinder, the lower end of sediment inner cylinder is supported and fixed in the bottom of natural sedimentation tank, there is gap between the lower end of sediment outer cylinder and the bottom in natural sedimentation tank, the upper end of sediment inner cylinder is lower than the upper end of sediment outer cylinder, one end of raw water inlet pipe extends into its inside from the side wall of sediment inner cylinder below sediment outer cylinder, flow guide groove is arranged on the outer wall of the upper end of natural sedimentation tank, flow guide groove is arranged on the outside of natural sedimentation tank, first water outlet is opened in the bottom of flow guide groove, the first water outlet is connected with first drain pipe by electromagnetic switch valve, the end of first drain pipe away from electromagnetic switch valve is connected with first water inlet arranged on the upper end side wall of medicament treatment pool, the upper support plate is horizontally fixed above medicament treatment pool by stand, dosing tank is arranged on the bottom of upper support plate, dosing tank is connected with upper support plate by position adjusting mechanism, dosing tank is connected with medicament adding pipeline by dosing pipeline arranged on the bottom, second water outlet is opened on the lower end side wall of medicament treatment pool, second water outlet is connected with first water pump arranged on the outer wall of industrial water tank by second drain pipe.

[0007] Further: the upper end of the sediment inner cylinder is detachably fixed with cap-shaped cover body by connecting sheet, there is gap between the outer wall of cap-shaped cover body and the inner wall of sediment inner cylinder, one end of raw water inlet pipe extended into sediment inner cylinder extends into cap-shaped cover body, annular filter plate is sleeved on the outside of raw water inlet pipe extended into sediment inner cylinder, annular filter plate is slidably connected between sediment inner cylinder and raw water inlet pipe, annular filter plate is connected with cap-shaped cover body by hanger rod, the top of cap-shaped cover body is provided with lifting ring structure.

[0008] Further: the bottom of the leftmost side of medicament treatment pool is provided with arc-shaped discharge chute, the bottom surface of medicament treatment pool left to arc-shaped discharge chute is inclined to left, arc-shaped discharge chute is connected with discharge port arranged on the rear end surface of medicament treatment pool, the arc-shaped discharge chute is provided with spiral discharge mechanism.

[0009] Still further: the position adjusting mechanism comprises a lead screw, a servo motor, a nut sleeve, a first trapezoidal slide rail, a second trapezoidal slide rail, a sliding plate, a sliding seat and an electric cylinder, the top of the left and right ends of the upper support plate is vertically fixed with a side plate, the two side plates are oppositely arranged, the lead screw is horizontally rotationally connected between the two side plates and one end of the lead screw is connected with the servo motor, the first trapezoidal slide rail is arranged on the bottom of the upper support plate, the sliding plate is connected with the first trapezoidal slide rail through the first sliding slot arranged on the top, the nut sleeve is connected with the lead screw and the sliding plate through a transmission member, the upper support plate is provided with a through slot for the transmission member to pass through, the transmission member can slide left and right along the through slot, the second trapezoidal slide rail is arranged on the bottom of the sliding plate, the sliding seat is connected with the second trapezoidal slide rail through the second sliding slot arranged on the top, the electric cylinder is installed on the bottom of the sliding plate and the output shaft end of the electric cylinder is connected with the sliding seat, the extension direction of the output shaft end of the electric cylinder is parallel to the second trapezoidal slide rail, and the medicament adding box body is fixed on the bottom of the sliding seat.

[0010] Still further: the top of the upper support plate is further provided with a washing water storage tank body, the bottom of the washing water storage tank body is provided with a washing pump, the position of the washing pump on the upper support plate is provided with a gap, and the washing pump is connected with the washing nozzle arranged on the bottom of the medicament adding box body through a conveying hose.

[0011] Still further: the inner wall of the medicament treatment pool is provided with a filter screen assembly at the position opposite to the second water outlet, the outer wall of the medicament treatment pool is provided with an electric control four-way valve at the position opposite to the second water outlet, the first port of the electric control four-way valve is connected with the second water outlet, the second port of the electric control four-way valve is connected with the second drain pipeline, the third port of the electric control four-way valve is connected with the circulating pump, the circulating pump is connected with the water outlet end arranged on the inner wall of the upper end of the medicament treatment pool through a circulating pipeline, and the fourth port of the electric control four-way valve is connected with the pressure protection valve.

[0012] After the above structure is adopted, the beneficial effects of the medicament treatment pool are as follows:

[0013] The bottom surface of the left inclined medicament treatment pool is matched with the washing nozzle, so that the impurities on the bottom surface of the medicament treatment pool can be all washed into the arc-shaped discharge chute, and then the impurities are discharged by the spiral discharge mechanism, so that the medicament treatment pool is convenient to clean, and the practicality is improved.

[0014] The hoisting ring structure can hoist the annular filter plate out by the hoisting rod, and the impurities in the inner cylinder of the sediment are quickly removed by the annular filter plate, so that the natural sedimentation tank is convenient to clean.

[0015] The utility model discloses make electric control four -way valve and pressure protection valve intercommunication, when the clogging occurs through pressure protection valve can play the purpose of self -protection, prevent the occurrence of unnecessary damage caused by too big internal and external pressure difference. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model makes further detailed explanation in combination with the attached drawing and specific embodiment.

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

[0018] Figure 2 It is the internal structure diagram of natural sedimentation tank.

[0019] Figure 3 It is Figure 2 The close -up drawing of A.

[0020] Figure 4 It is the structure diagram of medicament treatment pool. SPECIFIC EMBODIMENT

[0021] Such as Figure 1 And Figure 2The utility model provides an efficient raw water pretreatment system, including natural sedimentation tank 1, raw water inlet pipe 5, medicament treatment tank 6, upper support plate 8 and industrial water tank 11, the vertical fixed sedimentation inner cylinder 4 in the center of natural sedimentation tank, the outside fixed sedimentation outer cylinder 3 of sedimentation inner cylinder, be provided with the flow guide channel between the outer wall of sedimentation inner cylinder and the inner wall of sedimentation outer cylinder, the lower end of sedimentation inner cylinder is supported and fixed in the bottom of natural sedimentation tank, the gap is kept between the lower end of sedimentation outer cylinder and the bottom in natural sedimentation tank, the upper end of sedimentation inner cylinder is lower than the upper end of sedimentation outer cylinder, and the one end of raw water inlet pipe stretches into its inside from the lateral wall of the sedimentation inner cylinder below the sedimentation outer cylinder, is provided with the flow guide groove 2 on the upper end outer wall of natural sedimentation tank, and the flow guide groove is surrounded and is provided with on the outside of natural sedimentation tank, is set with first water outlet in the bottom of flow guide groove, the first water outlet is connected with first drain pipe through electromagnetic switch valve 14, and the one end of first drain pipe is connected with the first water inlet on the upper end lateral wall of medicament treatment tank away from electromagnetic switch valve, the bottom of upper support plate is provided with dosing tank 10, and dosing tank is connected with upper support plate through position adjusting mechanism, and the bottom of dosing tank is provided with dosing pipeline 28 and is connected with medicament adding pipeline, the lower end lateral wall of medicament treatment tank is provided with second water outlet, and second water outlet is connected with the first water pump 12 on the outer wall of industrial water tank through second drain pipe, when working, raw water first enters sedimentation inner cylinder and carries out first natural sedimentation, and with the more and more raw water entering, will fill into sedimentation outer cylinder, thereby carrying out second natural sedimentation in natural sedimentation tank, when the raw water after natural sedimentation in natural sedimentation tank fills into flow guide groove, will along first drain pipe enter medicament treatment tank and carries out medicament treatment, and the raw water after treatment enters industrial water tank and stores under the action of first water pump.

[0022] As Figure 2 And Figure 3 The upper end of the sedimentation inner cylinder is detachably fixed with a cap-shaped cover body 15 through a connecting piece 16, and the outer wall of the cap-shaped cover body and the inner wall of the sedimentation inner cylinder have a gap therebetween. The one end of the raw water inlet pipe extending into the sedimentation inner cylinder extends into the cap-shaped cover body. An annular filter plate 13 is sleeved on the outside of the raw water inlet pipe extending into the sedimentation inner cylinder. The annular filter plate is slidingly connected between the sedimentation inner cylinder and the raw water inlet pipe. The annular filter plate is connected with the cap-shaped cover body through a lifting rod 17. The top of the cap-shaped cover body is provided with a lifting ring structure 18. The lifting ring structure can be used to lift the annular filter plate out of the sedimentation inner cylinder through the lifting rod. The annular filter plate can be used to quickly remove the impurities deposited in the sedimentation inner cylinder. The natural sedimentation tank is convenient to clean.

[0023] As Figure 1 And Figure 4The bottom of the leftmost side of the medicament treatment pool is provided with an arc-shaped discharge chute, the bottom surface of the medicament treatment pool left to the arc-shaped discharge chute is provided in a leftward inclined manner, the arc-shaped discharge chute is connected with a discharge port arranged on the rear end surface of the medicament treatment pool, and a spiral discharge mechanism 7 is arranged in the arc-shaped discharge chute; a flushing water storage tank 9 is further arranged on the top of the upper support plate, a flushing pump is mounted on the bottom of the flushing water storage tank, and a notch is formed on the upper support plate relative to the position of the flushing pump; and the flushing pump is connected with a flushing nozzle 29 arranged on the bottom of the medicament adding tank through a conveying hose.

[0024] As Figure 4 The position adjusting mechanism comprises a lead screw 23, a servo motor 20, a nut sleeve 21, a first trapezoidal slide rail 24, a second trapezoidal slide rail, a sliding plate 22, a sliding seat 26 and an electric cylinder 25, each of the top portions of the left and right ends of the upper support plate is vertically fixed with a side plate 19, the two side plates are oppositely arranged, the lead screw is horizontally rotationally connected between the two side plates and one end of the lead screw is connected with the servo motor, the first trapezoidal slide rail is arranged on the bottom of the upper support plate, the sliding plate is connected with the first trapezoidal slide rail through a first sliding groove formed on the top, the nut sleeve is connected with the lead screw and the nut sleeve is connected with the sliding plate through a transmission member, a through slot is formed on the upper support plate for the transmission member to pass through, the transmission member can slide leftward and rightward along the through slot, the second trapezoidal slide rail is arranged on the bottom of the sliding plate, the sliding seat is connected with the second trapezoidal slide rail through a second sliding groove formed on the top, the electric cylinder is mounted on the bottom of the sliding plate and the out shaft end of the electric cylinder is connected with the sliding seat, the extension direction of the out shaft end of the electric cylinder is parallel to the second trapezoidal slide rail, and the medicament adding tank is fixed on the bottom of the sliding seat. The medicament can be added into any area in the medicament treatment pool, and the bottom of the medicament treatment pool can be washed in all directions, so that the practicality is improved.

[0025] As Figure 4The filter screen assembly 31 is installed on the inner wall of the medicament treatment tank opposite to the second water outlet, the electrically-controlled four-way valve 32 is installed on the outer wall of the medicament treatment tank opposite to the second water outlet, the first port of the electrically-controlled four-way valve is communicated with the second water outlet, the second port of the electrically-controlled four-way valve is communicated with the second drain pipeline, the third port of the electrically-controlled four-way valve is communicated with the circulating pump 34, the circulating pump is communicated with the water outlet end head 30 arranged on the inner wall of the upper end of the medicament treatment tank through a circulating pipeline, and the fourth port of the electrically-controlled four-way valve is communicated with the pressure protection valve 33. The electrically-controlled four-way valve is communicated with the pressure protection valve, the pressure protection valve can realize self-protection when blockage occurs, and unnecessary damage caused by excessive internal and external pressure difference can be prevented.

[0026] The preferred embodiments of the utility model are described above, and the protection scope of the utility model is not limited to the above-mentioned embodiments. Any technical scheme falling within the concept of the utility model belongs to the protection scope of the utility model. It should be noted that, for ordinary skilled persons in the technical field, some improvements and decorations without departing from the principle of the utility model are considered as the protection scope of the utility model.

Claims

1. A high efficiency raw water pretreatment system, characterized by: Including natural sedimentation tank (1), raw water inlet pipe (5), medicament treatment tank (6), upper support plate (8) and industrial water tank (11), the vertical fixed sedimentation inner cylinder (4) is arranged at the center of the natural sedimentation tank, the outer side of the sedimentation inner cylinder is fixed with the sedimentation outer cylinder (3), the outer wall of the sedimentation inner cylinder and the inner wall of the sedimentation outer cylinder are provided with flow guide channel, the lower end of the sedimentation inner cylinder is supported and fixed on the bottom of the natural sedimentation tank, the lower end of the sedimentation outer cylinder and the bottom of the natural sedimentation tank have a gap, the upper end of the sedimentation inner cylinder is lower than the upper end of the sedimentation outer cylinder, one end of the raw water inlet pipe extends into the sedimentation inner cylinder from the sidewall of the sedimentation inner cylinder below the sedimentation outer cylinder, the upper end outer wall of the natural sedimentation tank is provided with a flow guide groove (2), the flow guide groove is arranged on the outside of the natural sedimentation tank, the bottom of the flow guide groove is provided with a first water outlet, the first water outlet is connected with the first drain pipe through the electromagnetic switch valve (14), the end of the first drain pipe away from the electromagnetic switch valve is connected with the first water inlet arranged on the upper end sidewall of the medicament treatment tank, the upper support plate is horizontally fixed above the medicament treatment tank through the stand column, the bottom of the upper support plate is provided with a dosing tank (10), the dosing tank is connected with the upper support plate through the position adjusting mechanism, the bottom of the dosing tank is provided with a dosing pipe (28) and is connected with the medicament adding pipe, the lower end sidewall of the medicament treatment tank is provided with a second water outlet, the second water outlet is connected with the first water pump (12) arranged on the outer wall of the industrial water tank through the second drain pipe.

2. The efficient raw water pretreatment system of claim 1, wherein: The upper end of the sedimentation inner cylinder is detachably fixed with a cap-shaped cover body (15) through a connecting sheet (16), there is a gap between the outer wall of the cap-shaped cover body and the inner wall of the sedimentation inner cylinder, one end of the raw water inlet pipe extending into the sedimentation inner cylinder extends into the cap-shaped cover body, the outer side of the raw water inlet pipe extending into the sedimentation inner cylinder is sleeved with an annular filter plate (13), the annular filter plate is connected between the sedimentation inner cylinder and the raw water inlet pipe in a sliding manner, the annular filter plate is connected with the cap-shaped cover body through a hanger rod (17), and the top of the cap-shaped cover body is provided with a lifting ring structure (18).

3. The efficient raw water pretreatment system of claim 1, wherein: The bottom of the leftmost side of the medicament treatment tank is provided with an arc-shaped discharge chute, the bottom surface of the medicament treatment tank left to the arc-shaped discharge chute is inclined to the left, the arc-shaped discharge chute is connected with the discharge port arranged on the end face of the rear side of the medicament treatment tank, and the arc-shaped discharge chute is provided with a spiral discharge mechanism (7).

4. The efficient raw water pretreatment system of claim 1, wherein: The position adjusting mechanism comprises a lead screw (23), a servo motor (20), a nut sleeve (21), a first trapezoidal slide rail (24), a second trapezoidal slide rail, a sliding plate (22), a sliding base (26) and an electric cylinder (25), the top of the left and right ends of the upper support plate is vertically fixed with a side plate (19), the two side plates are oppositely arranged, the lead screw is horizontally connected between the two side plates and one end of the lead screw is connected with the servo motor, the first trapezoidal slide rail is arranged on the bottom of the upper support plate, the sliding plate is connected with the first trapezoidal slide rail through the first sliding slot arranged on the top, the nut sleeve is connected with the lead screw and the sliding plate is connected with the nut sleeve through a transmission member, the upper support plate is provided with a through slot for the transmission member to pass through, the transmission member can slide left and right along the through slot, the second trapezoidal slide rail is arranged on the bottom of the sliding plate, the sliding base is connected with the second trapezoidal slide rail through the second sliding slot arranged on the top, the electric cylinder is installed on the bottom of the sliding plate and the out shaft end of the electric cylinder is connected with the sliding base, the extension direction of the out shaft end of the electric cylinder is parallel to the second trapezoidal slide rail, and the dosing tank is fixed on the bottom of the sliding base.

5. The efficient raw water pretreatment system of any one of claims 1 or 4, wherein: The top of the upper support plate is further provided with a flushing water storage tank (9), the bottom of the flushing water storage tank is provided with a flushing pump, the position of the flushing pump on the upper support plate is provided with a notch, and the flushing pump is connected with the flushing nozzle (29) arranged on the bottom of the dosing tank through a conveying hose.

6. The efficient raw water pretreatment system of claim 1, wherein: The inner wall of the medicament treatment tank is provided with a filter screen assembly (31) at a position opposite to the second water outlet, the outer wall of the medicament treatment tank is provided with an electric control four-way valve (32) at a position opposite to the second water outlet, the first port of the electric control four-way valve is connected with the second water outlet, the second port of the electric control four-way valve is connected with the second drain pipeline, the third port of the electric control four-way valve is connected with a circulating pump (34), the circulating pump is connected with the water outlet end head (30) arranged on the inner wall of the upper end of the medicament treatment tank through a circulating pipeline, and the fourth port of the electric control four-way valve is connected with a pressure protection valve (33).

Images