A dosing device for power plant water treatment

Abstract

The utility model discloses a dosing device for power plant water treatment belongs to the technical field of dosing device, it includes: storage cylinder, its inside slidingly equipped with piston ring, and the piston ring rotates and is equipped with carousel, carousel's top side is circularly arrayed fixedly equipped with a plurality of pusher plate, limiting mechanism, it is equipped between piston ring and carousel, is used for the constraint location between piston ring and carousel, drive mechanism, it is equipped at the top of storage cylinder, is used for driving carousel rotation. The improved dosing device uses, before carrying out the medicine liquid investment, can pass through the cooperation of piston ring and carousel and pusher plate, and the medicine liquid in storage cylinder is stirred and is handled, and through the distance control medicine liquid investment's amount of piston ring and carousel's upshift, simultaneously, when medicine liquid investment is completed, can immediately stop the efflux of medicine liquid in the flow guide pipe, can greatly promote the precision of medicine liquid investment.

Description

Technical Field

[0001] This utility model relates to the technical field of dosing devices, and in particular to a dosing device for water treatment in power plants. Background Technology

[0002] Power plants are the source of the power system. Their core function is to convert other forms of energy into electrical energy through generators. During the operation of a power plant, the water treatment process is a complex and crucial system that is directly related to the safe, economical and stable operation of the power plant. Its core objective is to prevent scaling, corrosion and salt accumulation in thermal equipment.

[0003] In the process of boiler water treatment, trisodium phosphate or pH adjustment, or disodium hydrogen phosphate for phosphate treatment, are usually added to the water. These agents are usually put into a dissolving tank to make a solution before being added. The addition of the chemical solution in the boiler water is usually completed by a water pump and pipeline. During the placement of the chemical solution in the dissolving tank, precipitation may occur, which will affect the accuracy of the dosing. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to provide a dosing device for water treatment in power plants, which can stir the chemical solution before dosing and can immediately stop the flow of the chemical solution in the guide pipe when the chemical solution is added, thereby greatly improving the accuracy of chemical solution dosing.

[0005] To solve the above problems, this utility model provides a dosing device for water treatment in power plants, including: a storage cylinder, in which a piston ring is slidably installed, and a turntable is rotatably installed inside the piston ring, wherein a number of levers are fixedly installed in a circumferential array on the top side of the turntable;

[0006] The limiting mechanism is located between the piston ring and the turntable and is used to constrain and limit the piston ring and the turntable.

[0007] A drive mechanism, located at the top of the storage cylinder, is used to drive the turntable to rotate;

[0008] An electrically controlled valve and a storage cylinder are symmetrically arranged on both sides of the drive mechanism. The bottom ends of the electrically controlled valve and the storage cylinder are both fixedly inserted into the storage cylinder. The top end of the electrically controlled valve is connected to a pressure limiting valve one through a guide pipe, and the top end of the storage cylinder is connected to a water inlet pipe through a pressure limiting valve two.

[0009] A sealing mechanism is installed inside the bottom opening of the storage cylinder and is used to seal the bottom opening of the storage cylinder.

[0010] Preferably, two guide rods are symmetrically fixed on the top side of the piston ring, and each guide rod slides through the top wall of the storage cylinder.

[0011] Preferably, the limiting mechanism includes a plurality of sliding grooves, which are equally spaced on the outer peripheral wall of the turntable. A push rod is slidably installed in the sliding groove, and one end of the push rod is fixedly connected to the inner wall of the corresponding sliding groove by a spring. A ball is rotatably installed at the other end of the push rod. A positioning groove is opened on the inner ring wall of the piston ring at the position corresponding to the sliding groove, and the end of the ball away from the turntable is inserted into the corresponding positioning groove.

[0012] Preferably, the driving mechanism includes a driver, which is fixedly installed in the middle of the top side of the storage cylinder. The driving end of the driver is fixedly installed through a threaded tube, and the bottom of the threaded tube rotatably passes through the cylinder wall of the storage cylinder. A threaded shaft is threaded through the threaded tube, and the bottom end of the threaded shaft is fixedly connected to the turntable.

[0013] Preferably, the sealing mechanism includes a limiting ring, which is fixedly installed inside the storage cylinder. A sealing plate is provided on the bottom side of the ring. A round rod is slidably installed through the middle of the sealing plate, and the bottom end of the round rod is fixedly connected to the inner wall of the storage cylinder through a connecting rod. A second spring is wound around the bottom of the round rod, and the two ends of the second spring are fixedly connected to the sealing plate and the bottom end of the round rod, respectively.

[0014] Preferably, the storage cylinder includes a graduated tube and a cylinder cover, and the cylinder cover is threaded onto the top of the graduated tube, and the top side of the limiting ring is inclined.

[0015] This utility model has the following beneficial effects:

[0016] When using this improved dosing device, the liquid medicine in the storage tank can be stirred by the interaction of the piston ring, the turntable and the deflector before the liquid medicine is added. The amount of liquid medicine added is controlled by the upward movement distance of the piston ring and the turntable. At the same time, the outflow of liquid medicine in the guide tube can be stopped immediately when the liquid medicine is added, which can greatly improve the accuracy of liquid medicine addition. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a perspective view of the overall structure of this utility model;

[0019] Figure 2 This is a front view of the internal structure of the storage cylinder of this utility model;

[0020] Figure 3 This utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0021] Figure 4 This is a perspective view of the piston ring and turntable of this utility model;

[0022] Figure 5 This utility model Figure 2 Enlarged view of the structure at point B;

[0023] Figure 6 This is a front view of the internal structure of the storage cylinder of this utility model.

[0024] In the diagram: 1. Storage cylinder; 2. Piston ring; 3. Turntable; 4. Paddle plate; 5. Limiting mechanism; 51. Slide groove; 52. Push rod; 53. Spring 1; 54. Ball bearing; 55. Positioning groove; 6. Drive mechanism; 61. Driver; 62. Threaded pipe; 63. Threaded shaft; 7. Electrically controlled valve; 8. Storage cylinder; 81. Scale tube; 82. Cylinder cover; 9. Sealing mechanism; 91. Limiting ring; 92. Sealing plate; 93. Round rod; 94. Spring 2; 10. Guide pipe; 11. Pressure relief valve 1; 12. Pressure relief valve 2; 13. Water inlet pipe; 14. Guide rod. Detailed Implementation

[0025] To make the technical solution and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0026] Example:

[0027] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 The present invention discloses a dosing device for water treatment in power plants, comprising: a storage cylinder 1, wherein a piston ring 2 is slidably mounted inside the storage cylinder 1, and a turntable 3 is rotatably mounted inside the piston ring 2, wherein a plurality of levers 4 are fixedly mounted in a circular array on the top side of the turntable 3.

[0028] The limiting mechanism 5 is located between the piston ring 2 and the turntable 3 and is used to constrain and limit the piston ring 2 and the turntable 3.

[0029] The drive mechanism 6 is located on the top of the storage cylinder 1 and is used to drive the turntable 3 to rotate.

[0030] The electrically controlled valve 7 and the storage cylinder 8 are symmetrically arranged on both sides of the drive mechanism 6. The bottom end of the electrically controlled valve 7 and the bottom end of the storage cylinder 8 are both fixedly inserted into the storage cylinder 1. The top end of the electrically controlled valve 7 is connected to a pressure limiting valve 11 through a guide pipe 10, and the top end of the storage cylinder 8 is connected to a water inlet pipe 13 through a pressure limiting valve 12.

[0031] The sealing mechanism 9 is located inside the bottom opening of the storage cylinder 8 and is used to seal the bottom opening of the storage cylinder 8.

[0032] In this embodiment, when using the improved dosing device, please refer to... Figure 1 , Figure 2 and Figure 3 As mentioned above, when the drive mechanism 6 is started, since the electronically controlled valve 7 is not opened, the limiting mechanism 5 releases the constraint between the piston ring 2 and the turntable 3. The startled drive mechanism 6 drives the dial plate 4 to make a circular motion through the turntable 3. At this time, the rotating dial plate 4 stirs the liquid in the storage cylinder 1, completing the stirring process of the liquid in the storage cylinder 1, so that the effective substances in the liquid are more evenly distributed.

[0033] After the stirring time of the medicine in the storage tank 1 is reached, the electrically controlled valve 7 opens. At this time, due to the constraint and limit of the piston ring 2 and the turntable 3 by the limiting mechanism 5, the activated drive mechanism 6 pulls the turntable 3 upward. Through the cooperation of the piston ring 2 and the turntable 3, the medicine in the storage tank 1 is pushed into the electrically controlled valve 7. Then, the medicine is guided to the corresponding discharge position (such as water storage equipment or boiler) by the guide pipe 10 and the pressure limiting valve 11. The amount of medicine added is controlled by the upward movement of the piston ring 2. After the amount of medicine added reaches the threshold, the drive mechanism 6 stops running. At this time, due to the obstruction of the pressure limiting valve 11, the medicine immediately stops flowing out of the pressure limiting valve 11. (The whole device is controlled by an external control host and control panel.)

[0034] It should be noted that during the process of completely emptying the medicine solution in storage cylinder 1, please refer to... Figure 1 , Figure 2 and Figure 3 As shown, the user needs to insert the corresponding amount of medicine into the storage cylinder 8 for storage (the medicine is trisodium phosphate or disodium hydrogen phosphate, etc.).

[0035] After most of the medicine liquid has been drained from storage cylinder 1, please refer to... Figure 1 , Figure 2 and Figure 6 As shown, the drive mechanism 6 drives the disc to move downwards until the disc 3 contacts the inner wall of the storage cylinder 1. During this process, a negative pressure chamber is formed at the top of the storage cylinder 1, thereby driving the sealing mechanism 9 to release the seal inside the storage cylinder 8, allowing the medicine in the storage cylinder 8 to fall into the storage cylinder 1. (Please refer to...) Figure 1 As shown, the water inlet pipe 13 is connected to an external water source (such as a faucet or water supply equipment), and generates a sufficient pressure difference across the pressure relief valve 12. At this time, the corresponding amount of water from the outside flows into the storage cylinder 1 through the water inlet pipe 13, the pressure relief valve, and the storage cylinder 8. The water flow in the storage cylinder 8 can also flush the medicine attached to the inner wall of the storage cylinder 8 into the storage cylinder 1.

[0036] After the medicine and water are added to the storage tank 1, the medicine and water in the storage tank 1 are stirred according to the above-mentioned process to accelerate the dissolution rate of the medicine in the water.

[0037] In summary, when using this improved dosing device, the liquid medicine in the storage cylinder 1 can be stirred by the interaction of the piston ring 2, the turntable 3, and the deflector 4 before the liquid medicine is added. The amount of liquid medicine added can be controlled by the upward movement distance of the piston ring 2 and the turntable 3. At the same time, the outflow of liquid medicine in the guide tube 10 can be stopped immediately when the liquid medicine is added, which can greatly improve the accuracy of liquid medicine addition.

[0038] In a further preferred embodiment of this utility model, such as Figure 1 , Figure 2 and Figure 4 As shown, two guide rods 14 are symmetrically fixed on the top side of the piston ring 2, and each guide rod 14 slides through the top wall of the storage cylinder 1.

[0039] In this embodiment, (please refer to...) Figure 2 As shown, inside the cylinder wall of the storage cylinder 1, a sealing ring is installed between the guide rod 14 and the cylinder wall of the storage cylinder 1 through an annular groove. The setting of the guide rod 14 can constrain the movement trajectory of the piston ring 2, so that the piston ring 2 always slides back and forth in a linear up and down trajectory and will not rotate inside the storage cylinder 1.

[0040] In a further preferred embodiment of this utility model, such as Figure 2 and Figure 3 As shown, the limiting mechanism 5 includes a plurality of sliding grooves 51, which are equally spaced on the outer peripheral wall of the turntable 3. A push rod 52 is slidably installed in the sliding groove 51, and one end of the push rod 52 is fixedly connected to the inner wall of the corresponding sliding groove 51 by a spring 53. A ball bearing 54 is rotatably installed on the other end of the push rod 52. A positioning groove 55 is opened on the inner ring wall of the piston ring 2 at the position corresponding to the sliding groove 51, and the end of the ball bearing 54 away from the turntable 3 is inserted into the corresponding positioning groove 55.

[0041] In this embodiment, please refer to Figure 2 , Figure 3 and Figure 4 As shown, when the drive mechanism 6 applies a driving force to the turntable 3, if the electronically controlled valve 7 is opened, the turntable 3 will not rotate within the piston ring 2 due to the mutual contact between the ball bearing 54 and the positioning groove 55 and the mutual contact between the push rod 52 and the inner wall of the slide groove 51. (Please refer to...) Figure 2 and Figure 3As shown, a sealing ring is installed in the plate wall of the turntable 3 through an annular groove to seal the gap between the turntable 3 and the piston ring 2. When the electric control valve 7 is closed, the piston ring 2 and the turntable 3 cannot move upward due to the constraint of the liquid on the top side of the piston ring 2 and the turntable 3. At this time, the turntable 3 is driven by the axial pushing force. Through the mutual abutment between the inner wall of the positioning groove 55 and the ball 54, the ball 54 is squeezed out of the positioning groove 55 along the outer arc wall of the ball 54, thereby automatically releasing the constraint and limiting state between the turntable 3 and the piston ring 2. The turntable 3 rotates inside the piston ring 2.

[0042] In a further preferred embodiment of this utility model, such as Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the drive mechanism 6 includes a driver 61, which is fixedly installed in the middle of the top side of the storage cylinder 1. The drive end of the driver 61 is fixedly installed through a threaded tube 62, and the bottom of the threaded tube 62 rotates through the cylinder wall of the storage cylinder 1. A threaded shaft 63 is threaded through the threaded tube 62, and the bottom end of the threaded shaft 63 is fixedly connected to the turntable 3.

[0043] In this embodiment, please refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, when the drive turntable 3 moves up and down, the driver 61 starts the drive threaded tube 62 to rotate in the forward or reverse direction. (The driver 61 is mainly composed of a housing, a servo motor, a gear transmission structure and a gear ring, and the threaded tube 62 is fixedly installed in the inner hole of the gear ring.) When the electric control valve 7 is open, the rotating threaded tube 62 drives the turntable 3 to slide inside the storage cylinder 1 upward or downward. When the electric control valve 7 is closed, the threaded tube 62 is locked with the threaded rod, and the driver 61 applies an axial driving force to the turntable 3.

[0044] In a further preferred embodiment of this utility model, please refer to the figure. Figure 1 and Figure 6 As shown, the sealing mechanism 9 includes a limiting ring 91, which is fixedly installed inside the storage cylinder 8. A sealing plate 92 is provided on the bottom side of the sealing plate 92. A round rod 93 is slidably installed through the middle of the sealing plate 92. The bottom end of the round rod 93 is fixedly connected to the inner wall of the storage cylinder 8 through a connecting rod. A second spring 94 is wound around the bottom of the round rod 93. The two ends of the second spring 94 are fixedly connected to the sealing plate 92 and the bottom end of the round rod 93, respectively.

[0045] In this embodiment, please refer to Figure 1 and Figure 6 As shown, when the medicine is added into the storage cylinder 8, due to the push of the sealing plate 92 by the second spring 94, the sealing plate 92 and the bottom side of the limiting ring 91 are tightly fitted, thereby sealing the bottom opening of the storage cylinder 8, so that the medicine is stably stored in the storage cylinder 8.

[0046] When a negative pressure chamber is formed at the top of the storage cylinder 1, the sealing plate 92 moves down and separates from the limiting ring 91 due to the pushing of the gas and water in the storage cylinder 1, so as to release the closed state of the bottom opening of the storage cylinder 1. The medicine and water pass through the inner hole of the limiting ring 91 and the gap between the sealing plate 92, the limiting ring 91 and the inner wall of the storage cylinder 8, and fall into the storage cylinder 1 to complete the addition of medicine and water in the storage cylinder 1. After the medicine and water in the storage cylinder 1 are added, the sealing plate 92 is pushed by the spring 94, and the sealing plate 92 re-fits with the limiting ring 91, automatically re-sealing the bottom opening of the storage cylinder 8.

[0047] In a further preferred embodiment of this utility model, such as Figure 6 As shown, the storage cylinder 8 includes a graduated tube 81 and a cylinder cover 82, and the cylinder cover 82 is threaded onto the top of the graduated tube 81, and the top side of the limiting ring 91 is set in an inclined shape.

[0048] In this embodiment, please refer to Figure 6 As shown, when adding medicine into the storage cylinder 8, the user unscrews the cap 82 from the graduated tube 81 (the water inlet tube 13 is a soft tube), then puts the medicine into the storage cylinder 8 through the top opening of the graduated tube 81, and determines the amount of medicine stored in the graduated tube 81 by the scale on the graduated tube 81. Then, the cap 82 is screwed back onto the graduated tube 81 to complete the assembly of the storage cylinder 8 and the addition of medicine is completed.

[0049] Working principle: When this improved dosing device is in use, the driver 61 drives the dial to make a circular motion through the threaded pipe 62, the threaded rod and the turntable 3, thereby completing the stirring treatment of the liquid in the storage tank 1. Then, after the electric control valve 7 is opened, the driver 61 drives the piston ring 2 and the turntable 3 to move upward through the threaded pipe 62 and the threaded rod, so as to put the corresponding amount of liquid in the storage tank 1 into the water storage equipment or boiler through the guide pipe 10 and the pressure limiting valve 11.

[0050] After most of the liquid medicine is discharged from the storage cylinder 1, the driver 61 drives the turntable 3 to move down, so as to draw the medicine and external water from the storage cylinder 8 into the storage cylinder 1 through the negative pressure chamber formed at the top of the storage cylinder 1, and accelerate the dissolution rate of the medicine in the water by stirring the water and medicine in the storage cylinder 1.

[0051] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A dosing device for water treatment in power plants, characterized in that, include: Storage cylinder (1), in which piston ring (2) is slidably installed, and turntable (3) is rotatably installed inside piston ring (2). Several levers (4) are fixedly installed on the top side of the turntable (3) in a circumferential array. The limiting mechanism (5) is located between the piston ring (2) and the turntable (3) and is used for the constraint and limiting between the piston ring (2) and the turntable (3); The drive mechanism (6) is located on the top of the storage cylinder (1) and is used to drive the turntable (3) to rotate; The electric control valve (7) and the storage cylinder (8) are symmetrically arranged on both sides of the drive mechanism (6), and the bottom end of the electric control valve (7) and the bottom end of the storage cylinder (8) are fixedly inserted into the storage cylinder (1). The top end of the electric control valve (7) is connected to the pressure limiting valve one (11) through the guide pipe (10), and the top end of the storage cylinder (8) is connected to the water inlet pipe (13) through the pressure limiting valve two (12). The sealing mechanism (9) is located inside the bottom opening of the storage cylinder (8) and is used to seal the bottom opening of the storage cylinder (8).

2. The dosing device for power plant water treatment according to claim 1, characterized in that: Two guide rods (14) are symmetrically fixed on the top side of the piston ring (2), and each guide rod (14) slides through the top wall of the storage cylinder (1).

3. A dosing device for power plant water treatment according to claim 2, characterized in that: The limiting mechanism (5) includes several grooves (51) that are equally spaced on the outer peripheral wall of the turntable (3). A push rod (52) is slidably installed in the groove (51), and one end of the push rod (52) is fixedly connected to the inner wall of the corresponding groove (51) by a spring (53). A ball (54) is rotatably installed on the other end of the push rod (52). A positioning groove (55) is opened on the inner ring wall of the piston ring (2) at the position corresponding to the groove (51), and the end of the ball (54) away from the turntable (3) is inserted into the corresponding positioning groove (55).

4. A dosing device for power plant water treatment according to claim 3, characterized in that: The drive mechanism (6) includes a driver (61), which is fixedly installed in the middle of the top side of the storage cylinder (1). The drive end of the driver (61) is fixedly installed through a threaded tube (62), and the bottom of the threaded tube (62) rotates through the cylinder wall of the storage cylinder (1). A threaded shaft (63) is threaded through the threaded tube (62), and the bottom end of the threaded shaft (63) is fixedly connected to the turntable (3).

5. A dosing device for power plant water treatment according to claim 4, characterized in that: The sealing mechanism (9) includes a limiting ring (91), which is fixedly installed inside the storage cylinder (8). A sealing plate (92) is provided on its bottom side. A round rod (93) is slidably installed through the middle of the sealing plate (92). The bottom end of the round rod (93) is fixedly connected to the inner wall of the storage cylinder (8) through a connecting rod. A second spring (94) is wound around the bottom of the round rod (93). The two ends of the second spring (94) are fixedly connected to the bottom ends of the sealing plate (92) and the round rod (93) respectively.

6. A dosing device for power plant water treatment according to claim 5, characterized in that: The storage cylinder (8) includes a graduated tube (81) and a cylinder cover (82), and the cylinder cover (82) is threaded onto the top of the graduated tube (81). The top side of the limiting ring (91) is set in an inclined shape.

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