Sugar refining drainage system

Abstract

The sugar manufacturing drainage system comprises an isobaric drainage tank, an upper electrode mounting pipe, a lower electrode mounting pipe and a drainage valve, the isobaric drainage tank is hollow, a water inlet pipe and a drainage pipe are arranged on the upper portion and the lower portion of the isobaric drainage tank respectively, and the drainage valve is mounted on the drainage pipe; the side faces of the upper portion and the lower portion of the isobaric drainage tank are respectively provided with an electrode installation opening, the lower electrode installation pipe is a straight pipe, the lower electrode installation pipe is inserted into the electrode installation opening in the lower portion of the isobaric drainage tank, and the lower electrode installation pipe is connected with the electrode installation opening through a flange. The electrodes are installed on the upper portion and the lower portion of the isobaric drainage tank, the resistance between the electrodes is detected through the controller, and therefore whether the liquid level in the isobaric drainage tank reaches the set height or not is judged, reliability is high, the problem of blow-by caused by valve clamping can be avoided, the angle of the upper electrode installation pipe can be adjusted, and operation is convenient. Therefore, the height of the end part of the upper electrode mounting pipe is adjusted, the triggering height of a drainage signal is adjusted, and different drainage requirements are met.

Description

Technical Field

[0001] This application relates to the technical field of sugar-making equipment, and particularly to a sugar-making drainage system. Background Art

[0002] Currently, sugar-making enterprises commonly use boiling pans to evaporate syrup and make it crystallize. The boiling pan is divided into upper and lower parts. The upper part is the evaporation chamber, and the lower part is the steam drum. The boiling pan mainly heats by introducing steam into the steam drum, so that the temperature of the evaporation chamber in the upper part of the boiling pan rises to achieve sugar boiling. During the steam heating process, condensed water will be generated, and the condensed water needs to be discharged through an isobaric drainage tank. For example, a Chinese patent with the application number 202322657325.4 discloses a sugar-boiling drainage system, which includes at least two double-effect steam sugar-boiling units, at least two triple-effect steam sugar-boiling units, a hot water tank, a double-effect air condensate pipe, and a triple-effect air condensate pipe. All double-effect steam sugar-boiling units are connected to the hot water tank through the double-effect air condensate pipe, and all triple-effect steam sugar-boiling units are connected to the hot water tank through the triple-effect air condensate pipe. When the isobaric drainage tank drains water, it cannot drain the water completely and needs to retain a certain amount of water to prevent steam from escaping. The existing isobaric drainage tank mainly uses a float drain valve to control the liquid level in the isobaric drainage tank. However, in actual use, the sealing structure of the float drain valve is prone to scaling and needs to be cleaned regularly during shutdown, reducing the startup rate of the equipment. At the same time, the float drain valve is prone to connecting rod jamming or the float not operating, resulting in untimely drainage of the isobaric drainage tank, poor drainage of the boiling pan, uneven steam inlet for sugar boiling, and affecting the balanced and stable production. If the float drain valve of the isobaric drainage tank is jammed and stays open, steam will leak into the steam drum of the boiling pan, resulting in a long boiling time of the boiling pan and large steam consumption for sugar boiling, which is not conducive to energy conservation and consumption reduction. Therefore, a sugar-making drainage system is needed, which uses high and low electrodes in the isobaric drainage tank to detect the water level in the tank. When the liquid level is too high, the drain valve can be opened to achieve drainage, extend the equipment maintenance cycle, and avoid problems such as steam leakage. Utility Model Content

[0003] To solve the above problems, this application proposes a sugar-making drainage system, which uses high and low electrodes in the isobaric drainage tank to detect the water level in the tank. When the liquid level is too high, the drain valve can be opened to achieve drainage, extend the equipment maintenance cycle, and avoid problems such as steam leakage.

[0004] This application is achieved through the following technical solutions:

[0005] This application provides a sugar-making drainage system, including: an isobaric drainage tank, an upper electrode installation pipe, a lower electrode installation pipe, and a drainage valve. The interior of the isobaric drainage tank is hollow, and a water inlet pipe and a drainage pipe are respectively arranged at the upper and lower parts of the isobaric drainage tank. The drainage valve is installed on the drainage pipe. Electrode installation ports are respectively arranged on the sides of the upper and lower parts of the isobaric drainage tank. The lower electrode installation pipe is a straight pipe, which is inserted into the electrode installation port at the lower part of the isobaric drainage tank, and the lower electrode installation pipe is connected to the electrode installation port through a flange. The middle part of the upper electrode installation pipe is bent, and the upper electrode installation pipe is inserted into the electrode installation port at the upper part of the isobaric drainage tank, and the upper electrode installation pipe is connected to the electrode installation port through a connecting plate.

[0006] Further, a first flange plate is arranged on the electrode installation port, a second flange plate is arranged on the upper electrode installation pipe. The diameter of the connecting plate is the same as that of the first flange plate, and the diameter of the second flange plate is smaller than that of the first flange plate. The second flange plate is connected to the first flange plate through the connecting plate.

[0007] Further, the second flange plate is provided with a stepped portion, a spline is arranged on the outer periphery of the stepped portion, and a key groove corresponding to the spline is arranged on the connecting plate. When the second flange plate is connected to the connecting plate, the spline is inserted into the key groove.

[0008] Further, 20 to 30 key teeth are arranged on the spline.

[0009] Further, a plurality of threaded blind holes are arranged on the connecting plate, and a plurality of arc-shaped long circular holes are arranged on the second flange plate. The long circular holes are connected to the threaded blind holes through bolts.

[0010] Further, electrode plates are installed at the ends of the upper electrode installation pipe and the lower electrode installation pipe. The electrode plates are respectively insulated and connected to the upper electrode installation pipe and the lower electrode installation pipe. Wires are arranged on the electrode plates, and the wires penetrate outwards from the middle parts of the upper electrode installation pipe and the lower electrode installation pipe.

[0011] Further, a controller is also included, and the controller is electrically connected to the electrode plate and the drainage valve respectively.

[0012] The beneficial effects of this application: By installing electrodes at the upper and lower parts of the isobaric drainage tank and detecting the resistance between the electrodes through the controller, it is possible to judge whether the liquid level in the isobaric drainage tank reaches the set height. It has high reliability and can avoid problems such as air leakage caused by valve jamming. The angle of the upper electrode installation pipe can be adjusted, so as to adjust the height of the end of the upper electrode installation pipe, and thus adjust the triggering height of the drainage signal to meet different drainage requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic structural diagram of the present utility model;

[0014] Figure 2Schematic diagram of the internal structure of the equal-pressure drainage tank of the present utility model;

[0015] Figure 3 Schematic diagram of the structure of the upper electrode mounting tube of the present utility model;

[0016] Figure 4 Schematic diagram of the structure of the connecting plate of the present utility model;

[0017] In the figure: 1 - equal-pressure drainage tank, 2 - upper electrode mounting tube, 3 - lower electrode mounting tube, 4 - drain valve, 5 - water inlet pipe, 6 - drain pipe, 7 - electrode mounting port, 8 - connecting plate, 9 - first flange plate, 10 - second flange plate, 11 - spline, 12 - oblong hole. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Among them, the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present utility model.

[0019] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0020] In addition, the descriptions involving "first", "second", etc. in the present application are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the said features. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0021] Such as Figures 1 to 4As shown in the figure, an embodiment of the present utility model provides a sugar-making drainage system, including: an isobaric drainage tank 1, an upper electrode installation pipe 2, a lower electrode installation pipe 3, and a drainage valve 4. The interior of the isobaric drainage tank 1 is hollow. The upper and lower parts of the isobaric drainage tank 1 are respectively provided with a water inlet pipe 5 and a drainage pipe 6. The drainage valve 4 is installed on the drainage pipe 6. Electrode installation ports 7 are respectively provided on the sides of the upper and lower parts of the isobaric drainage tank 1. The lower electrode installation pipe 3 is a straight pipe. The lower electrode installation pipe 3 is inserted into the electrode installation port 7 at the lower part of the isobaric drainage tank 1, and the lower electrode installation pipe 3 is connected to the electrode installation port 7 through a flange. The middle part of the upper electrode installation pipe 2 is bent. The upper electrode installation pipe 2 is inserted into the electrode installation port 7 at the upper part of the isobaric drainage tank 1, and the upper electrode installation pipe 2 is connected to the electrode installation port 7 through a connecting plate 8.

[0022] After the steam in the steam sugar-boiling tank is condensed, it is discharged into the isobaric drainage tank 1 through the water inlet pipe 5. The liquid level of the condensed water continuously rises. When the liquid level is higher than the end of the upper electrode installation pipe 2, due to the presence of water between the electrode plates installed at the end of the upper electrode installation pipe 2, the resistance between the electrode plates decreases. When the controller detects that the resistance between the electrode plates in the upper electrode installation pipe 2 decreases, it indicates that the liquid level has exceeded the end of the upper electrode installation pipe 2. At this time, the controller controls the drainage valve 4 to open, causing the liquid level in the isobaric drainage tank 1 to drop. When the liquid level drops below the end of the lower electrode installation pipe 3, since there is no water conduction between the electrodes at the end of the lower electrode installation pipe 3, the resistance will increase. When the controller detects that the resistance between the electrode plates in the lower electrode installation pipe 3 increases, it indicates that the liquid level has dropped below the end of the lower electrode installation pipe 3. At this time, the controller controls the drainage valve 4 to close, so that a certain amount of water is retained in the isobaric drainage tank 1 to prevent steam from escaping from the isobaric drainage tank 1, realizing isobaric drainage. Compared with the traditional float drainage valve, the electrode type liquid level detection method has no mechanical movement and is not easily stuck, avoiding problems such as air leakage after the valve is stuck. The drainage valve 4 adopts an electric ball valve currently in use, which has higher reliability than the float drainage valve, and the valve core can be automatically cleaned of scale when the ball valve rotates, maintaining airtightness.

[0023] In a specific embodiment, a first flange plate 9 is provided on the electrode installation port 7, and a second flange plate 10 is provided on the upper electrode installation pipe 2. The connecting plate 8 has the same diameter as the first flange plate 9, and the diameter of the second flange plate 10 is smaller than that of the first flange plate 9. The second flange plate 10 is connected to the first flange plate 9 through the connecting plate 8. Using the connecting plate 8 as a transition plate, flange plates of different sizes are connected to each other. When it is necessary to pull out the upper electrode installation pipe 2, the bolts between the connecting plate 8 and the second flange plate 10 can be loosened, and the upper electrode installation pipe 2 can be taken out as a whole from the middle of the isobaric drainage tank 1. When it is necessary to adjust the angle of the upper electrode installation pipe 2, only the bolts between the second flange plate 10 and the connecting plate 8 need to be loosened, and then the upper electrode installation pipe 2 is rotated. There are fewer bolts between the second flange plate 10 and the connecting plate 8 and they are easy to twist, facilitating the adjustment of the equipment.

[0024] In a specific embodiment, as Figure 3 , Figure 4 shown, the second flange plate 10 is provided with a stepped portion, and a spline 11 is provided on the outer periphery of the stepped portion. A keyway corresponding to the spline 11 is provided on the connecting plate 8. When the second flange plate 10 is connected to the connecting plate 8, the spline 11 is inserted into the keyway. After the spline 11 is inserted into the keyway, the rotation of the upper electrode mounting tube 2 can be restricted, so that the upper electrode mounting tube 2 maintains a deflection angle. By rotating the upper electrode mounting tube 2, the position of the end of the upper electrode mounting tube 2 and the position of the end electrode piece can be adjusted, thereby adjusting the liquid level height for triggering the drainage signal to meet different drainage requirements.

[0025] In a preferred embodiment, the spline 11 is provided with 20 to 30 key teeth, and the upper electrode mounting tube 2 can adjust the angle step by step, so as to set the liquid level height for adjusting the triggering of the drainage signal.

[0026] Preferably, the connecting plate 8 is provided with a plurality of threaded blind holes, and the second flange plate 10 is provided with a plurality of arc-shaped oblong holes 12. The oblong holes 12 are connected to the threaded blind holes by bolts. Since the second flange plate 10 needs to rotate with the upper electrode mounting tube 2, the oblong holes 12 cooperate with the plurality of threaded blind holes, so that the connecting plate 8 can be connected to the second flange plate 10 by bolts at any deflection angle.

[0027] Preferably, as Figure 2 shown, electrode pieces are installed at the ends of the upper electrode mounting tube 2 and the lower electrode mounting tube 3. The electrode pieces are insulated and connected to the upper electrode mounting tube 2 and the lower electrode mounting tube 3 respectively. Wires are provided on the electrode pieces, and the wires pass outwards from the middle of the upper electrode mounting tube 2 and the lower electrode mounting tube 3. Two electrode pieces are provided on each mounting tube. When the liquid level submerges the electrode pieces, the resistance between the electrode pieces will increase. When the controller detects the resistance change, it can judge that the liquid level is higher than the electrode pieces. Similarly, when draining water, when the liquid level is lower than the electrode pieces, the resistance between the electrode pieces will decrease. The controller can judge that the drain valve needs to be closed by detecting the resistance change.

[0028] Specifically, a controller is further included. The controller is electrically connected to the electrode pieces and the drain valve 4 respectively. A resistance detection module is provided inside the controller, so as to judge the liquid level height by detecting the resistance value between the electrode pieces in the upper electrode mounting tube 2 and the lower electrode mounting tube 3, so as to control the opening and closing of the drain valve 4.

[0029] Specifically, sealing rubber rings are provided between the flanges to ensure the airtightness of the isobaric drainage tank 1 and avoid steam leakage.

[0030] Of course, the present application may also have many other implementation manners. Based on this implementation manner, other implementation manners obtained by those of ordinary skill in the art without any creative work belong to the scope protected by the present application.

Claims

1. A sugar production drainage system, characterized in that: include: An isobaric drainage tank (1), an upper electrode mounting pipe (2), a lower electrode mounting pipe (3), and a drainage valve (4); the isobaric drainage tank (1) is hollow inside, and the upper and lower parts of the isobaric drainage tank (1) are respectively provided with a water inlet pipe (5) and a drainage pipe (6); the drainage valve (4) is installed on the drainage pipe (6); the upper and lower sides of the isobaric drainage tank (1) are respectively provided with electrode mounting ports (7); the lower electrode mounting pipe (3) is a straight pipe, the lower electrode mounting pipe (3) is inserted into the electrode mounting port (7) at the lower part of the isobaric drainage tank (1), and the lower electrode mounting pipe (3) is connected to the electrode mounting port (7) through a flange; the middle part of the upper electrode mounting pipe (2) is bent, the upper electrode mounting pipe (2) is inserted from the electrode mounting port (7) at the upper part of the isobaric drainage tank (1), and the upper electrode mounting pipe (2) is connected to the electrode mounting port (7) through a connecting plate (8).

2. A sugar production drainage system according to claim 1, characterized in that: The electrode mounting port (7) is provided with a first flange plate (9), the upper electrode mounting tube (2) is provided with a second flange plate (10), the connecting plate (8) has the same diameter as the first flange plate (9), the second flange plate (10) has a smaller diameter than the first flange plate (9), and the second flange plate (10) is connected to the first flange plate (9) via the connecting plate (8).

3. A sugar production drainage system according to claim 2, characterized in that: The second flange plate (10) is provided with a step portion, a spline (11) is provided on the outer periphery of the step portion, and a keyway corresponding to the spline (11) is provided on the connecting plate (8). When the second flange plate (10) is connected to the connecting plate (8), the spline (11) is inserted into the keyway.

4. A sugar production drainage system according to claim 3, characterized in that: The spline (11) is provided with 20 to 30 key teeth.

5. A sugar production drainage system according to claim 3, characterized in that: The connecting plate (8) is provided with a plurality of threaded blind holes, and the second flange plate (10) is provided with a plurality of arc-shaped oblong holes (12), and the oblong holes (12) are connected to the threaded blind holes by bolts.

6. A sugar production drainage system according to claim 1, characterized in that: Electrode sheets are installed at the ends of the upper electrode mounting tube (2) and the lower electrode mounting tube (3), and the electrode sheets are respectively insulated and connected to the upper electrode mounting tube (2) and the lower electrode mounting tube (3). Wires are arranged on the electrode sheets, and the wires pass outwards from the middle of the upper electrode mounting tube (2) and the lower electrode mounting tube (3).

7. A sugar production drainage system according to claim 6, characterized in that: It also includes a controller, which is electrically connected to the electrode sheet and the drain valve (4) respectively.

Images