Heat storage tank

Abstract

The utility model relates to the field of container scraper cleaning, in particular to a heat storage tank, and aims to solve the technical problem that a drainage pipeline of an existing heat storage tank for descaling by using a scraper is easily blocked by incrustation scale due to the fact that the incrustation scale is not cleaned in time. The heat storage tank comprises a tank body and a scraper descaling mechanism arranged in the tank body, the tank body is provided with a water inlet and a water outlet which are arranged up and down, and the bottom of the tank body is provided with a drain outlet. A filtering structure is arranged between the water inlet and the water outlet in the tank body, and the scraper descaling mechanism comprises a first scraper used for scraping and washing the upper side surface of the filtering structure and a second scraper used for scraping and washing the bottom of the tank body. When the heat storage tank works, water entering from the water inlet can be discharged from the water outlet only after being filtered by the filtering structure. During cleaning, the first scraper and the second scraper can scrape and wash the filtering structure and the drainage cavity, so that the heat storage tank adopting the structure can ensure that the water outlet on the heat storage tank cannot be blocked due to scale no matter whether the cleaning is timely or not.

Description

Technical Field

[0001] The utility model belongs to the field of container scraper cleaning, and in particular relates to a heat storage tank. Background Art

[0002] The heat storage tank is one of the most important equipment in the heating system. Existing heat storage tanks all have a certain thermal insulation performance in order to store hot water and other heat media for heating. During heating, the heat storage tank can continuously supply heat media to the outside to ensure the normal operation of the heating system. Since heating will cause the calcium and magnesium minerals in the water to crystallize and precipitate, the heat storage tank using hot water as the heat medium usually accumulates a lot of scale. If it is not cleaned in time, the scale may flow into the water outlet pipe of the heat storage tank with the water flow, causing the water outlet pipe of the heat storage tank to be blocked.

[0003] The Chinese utility model patent with the authorization announcement number CN205619429U discloses a solar heating system heat storage tank. The water tank is provided with a water inlet, a water outlet and a sewage outlet, wherein the water inlet is provided on the upper side of the water tank, the water outlet is provided on the lower side of the water tank, and the sewage outlet is provided at the bottom of the water tank. The water tank is provided with a first, a second and a third scraper, and the scraper is fixedly connected to a shaft body that penetrates into the water tank. The shaft body rotates under the drive of the motor on the water tank so as to drive the first, the second and the third scraper to scrape off the scale on the inner wall of the water tank. Since the descaling work of the water tank cannot be carried out during the period when the water tank is storing water, once the water tank is not cleaned in time, the scale accumulated during the period when the heat storage tank is storing water is easy to enter the drainage pipe of the water tank along with the water flow in the water tank, which is easy to cause the drainage pipe to be blocked. Utility Model Content

[0004] The utility model aims to provide a heat storage tank to solve the technical problem that the existing heat storage tank using a scraper for descaling is easily blocked by scale due to untimely cleaning of scale, which may cause the drainage pipe of the heat storage tank to be blocked by scale.

[0005] The following technical solutions are adopted in this utility model:

[0006] A heat storage tank comprises a tank body and a scraper descaling mechanism arranged in the tank body, wherein the tank body is provided with a water inlet and a water outlet arranged up and down, and a sewage outlet is provided at the bottom of the tank body; a filtering structure is provided in the tank body between the water inlet and the water outlet; the scraper descaling mechanism comprises a first scraper for scraping the upper surface of the filtering structure, and a second scraper for scraping the bottom of the tank body.

[0007] Furthermore, the filtering structure is arranged at a position of the tank body close to the bottom of the tank body.

[0008] Furthermore, the water outlet is arranged close to the filtering structure.

[0009] Furthermore, the bottom of the tank body is in a conical structure with the tip pointing downward, and the sewage outlet is arranged at the lowest point of the conical structure.

[0010] Furthermore, the water outlet is arranged above the conical structure.

[0011] Furthermore, the scraper cleaning mechanism has a scraping shaft connected to the drive motor and is vertically arranged at the axis of the tank body, and one end of the scraping shaft passes through the filter structure and extends to the bottom of the tank body; the first scraper and the second scraper are both fixedly arranged on the scraping shaft so as to rotate synchronously with the scraping shaft.

[0012] Furthermore, the first scraper is a straight plate with one side in contact with the filtering structure; one end of the straight plate is fixed on the scraping shaft, and the other end is close to the side wall of the tank body.

[0013] Furthermore, the second scraper is arranged obliquely along the generatrix of the conical structure, and a fixed connecting rod is provided between the second scraper and the scraping shaft so that the second scraper is fixedly connected to the scraping shaft.

[0014] Furthermore, one end of the second scraper is aligned with the edge of the sewage outlet, and the other end is close to the side wall of the tank body.

[0015] Furthermore, the tank body is an integrated sealed tank body, and an exhaust pipe is provided on the tank body.

[0016] Beneficial effects: The utility model improves the existing heat storage tank. The heat storage tank described in the utility model includes a tank body and a scraper descaling mechanism arranged in the tank body, and the tank body is provided with a water inlet and a water outlet arranged up and down. A sewage outlet is provided at the bottom of the tank body to discharge liquid mixed with scale when cleaning scale, and prevent scale from entering the pipeline connected to the heat storage tank along the water outlet. Compared with the prior art, the key point of the utility model is that a filtering structure is provided between the water inlet and the water outlet in the tank body. The scraper descaling mechanism includes a first scraper for scraping the upper surface of the filtering structure, and a second scraper for scraping the bottom of the tank body. When the heat storage tank is working, the water entering from the water inlet must be filtered by the filtering structure before it can be discharged from the water outlet. In this way, even if there is scale in the heat storage tank, there will be no excessive scale entering the water outlet and causing the water outlet to be blocked. When cleaning, after the first scraper scrapes off the scale on the filtering structure, the scale can enter the drainage cavity from the gap of the filtering structure. When the second scraper scrapes away the scale in the drainage chamber, it also scrapes away the scale that enters the drainage chamber from the water inlet chamber synchronously to prevent it from reattaching to the wall of the drainage chamber. After scraping and washing, the scale and waste water are discharged from the sewage outlet together to ensure the cleanliness of the inside of the heat storage tank. Therefore, regardless of whether the cleaning is timely or not, the heat storage tank adopting the above structure can ensure that the water outlet on the heat storage tank will not be blocked by scale, thereby effectively ensuring the reliability of the heat storage tank supplying heat to the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an off-axis schematic diagram of an embodiment of the heat storage tank of the utility model;

[0018] Figure 2 for Figure 1 The internal display diagram of

[0019] Figure 3 for Figure 1 Schematic cross-section diagram of

[0020] The names of the components corresponding to the corresponding figure marks in the figure are: 1. tank body; 2. water inlet; 3. water outlet; 4. scraper descaling mechanism; 5. scraper shaft; 6. drive unit; 7. exhaust pipe; 8. filtering structure; 9. first scraper; 10. second scraper; 11. sewage outlet; 12. conical structure; 13. fixed connecting rod. DETAILED DESCRIPTION

[0021] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0022] The principle of the heat storage tank described in the utility model:

[0023] A heat storage tank, the structure of which can refer to Figure 1-3 As shown. The heat storage tank described in the utility model includes a tank body 1 and a scraper descaling mechanism 4 arranged in the tank body 1. The tank body 1 of the heat storage tank is provided with a water inlet 2 and a water outlet 3 arranged up and down, so as to add water and drain water from the heat storage tank. A sewage outlet 11 is provided at the bottom of the tank body 1, which is used to discharge liquid mixed with scale when cleaning scale, and prevent scale from entering the pipeline connected to the heat storage tank along the water outlet 3. A filtering structure 8 is provided between the water inlet 2 and the water outlet 3 in the tank body 1. The scraper descaling mechanism 4 includes a first scraper 9 for scraping the upper surface of the filtering structure 8, and a second scraper 10 for scraping the bottom of the tank body 1.

[0024] When the heat storage tank is working, since the filter structure 8 is arranged between the water inlet 2 and the water outlet 3, the water entering from the water inlet 2 must be filtered by the filter structure 8 before it can be discharged from the water outlet 3. In this way, even if there is scale in the heat storage tank, there will not be too much scale entering the water outlet 3 and causing the water outlet 3 to be blocked. During cleaning, after the first scraper 9 scrapes off the scale on the filter structure 8, the scale can enter the drainage cavity from the gap of the filter structure 8. When the second scraper 10 scrapes off the scale in the drainage cavity, it also synchronously scrapes the scale entering the drainage cavity from the water inlet cavity to prevent it from re-attaching to the cavity wall of the drainage cavity. After scraping and washing, the scale and wastewater are discharged from the sewage outlet 11 together to ensure the cleanliness of the inside of the heat storage tank.

[0025] Therefore, regardless of whether the cleaning is timely or not, the heat storage tank using the above structure can ensure that the water outlet 3 on the heat storage tank will not be blocked by scale, thereby effectively ensuring the reliability of the heat storage tank supplying heat to the outside.

[0026] Embodiments of the heat storage tank of the utility model:

[0027] A heat storage tank, the structure of which can refer to Figure 1-3 As shown. The heat storage tank described in the utility model includes a tank body 1. The tank body 1 is provided with a heat-insulating layer to ensure the temperature inside the tank body 1. The tank body 1 is provided with a water inlet 2 for adding hot water into the heat storage tank, and a water outlet 3 for outputting the hot water in the heat storage tank to the outside. The water inlet 2 and the water outlet 3 are arranged up and down, that is, the water inlet 2 is located above the water outlet 3. A sewage outlet 11 is also provided at the bottom of the tank body 1, which is used to discharge liquid mixed with scale when cleaning scale, thereby preventing scale from entering the pipeline connected to the heat storage tank along the water outlet 3. A scraper descaling mechanism 4 is provided on the tank body 1. Because under the action of gravity, the mineral crystals precipitated in the water will be deposited in large quantities on the filter structure 8 and the bottom of the tank body 1, so the scraper descaling mechanism 4 specifically includes a first scraper 9 for scraping the filter structure 8, and a second scraper 10 for scraping the bottom of the tank body 1.

[0028] When the heating system where the heat storage tank is located is working, the heated water must first be transported to the tank body 1 through the water inlet 2. When the hot water stored in the tank body 1 is used for heating, it needs to be transported to the pipeline of the heating system through the water outlet 3. Under long-term storage, mineral elements such as calcium and magnesium in the water will precipitate and crystallize to form scale attached to the inside of the tank body 1. A filter structure 8 is provided between the water inlet 2 and the water outlet 3, which can prevent the scale in the tank body 1 from entering the water outlet 3 as much as possible, thereby reducing the risk of the water outlet 3 being blocked by scale. In this embodiment, the filter structure can be a filter screen or a filter plate. When scraping the heat storage tank, the first scraper 9 can break and scrape off the scale on the side of the filter structure 8 located in the water inlet chamber. The scraped scale will enter the drainage chamber through the gap of the filter structure 8 under the action of gravity and carried by the water flow. The second scraper 10 can scrape off the scale on the cavity wall of the drainage cavity and prevent the scale entering the drainage cavity from the water inlet cavity from reattaching to the cavity wall of the drainage cavity. After scraping and washing, the sewage outlet 11 is opened to release the scraped scale and dirty water.

[0029] The key point of the utility model is that the filter structure 8 is arranged at a position of the tank body 1 close to the bottom of the tank body 1. Since the filter structure 8 is arranged between the water inlet 2 and the water outlet 3, the water outlet 3 can only be arranged at a position of the tank body 1 close to the bottom of the tank body 1. In this way, on the one hand, it can prevent the hot water in the heat storage tank from being discharged from the water outlet 3 as much as possible, and on the other hand, it can also ensure that the water in the heat storage tank can be filtered through the filter structure 8 as much as possible. Of course, the filter structure 8 can also be arranged at other positions such as the middle of the tank body 1. On the basis of the above structure, the water outlet 3 can be arranged close to the filter structure 8. For the water below the filter structure 8, the closer to the filter structure 8, the less scale the water contains. Therefore, the above arrangement can ensure that the cleanest water flows out of the water outlet 3, and can avoid the water outlet 3 from being blocked by scale as much as possible.

[0030] In this embodiment, the main body of the tank body 1 is cylindrical. The bottom of the tank body 1 is a conical structure 12 with the tip pointing downward, and the drain outlet 11 is arranged at the lowest point of the conical structure 12. Such an arrangement can make the scale scraped off gather toward the drain outlet 11 under the action of gravity, so that the drain outlet 11 can quickly and fully discharge the scale scraped off. In other embodiments, the bottom of the tank body 1 can also be a plane, and the drain outlet 11 can be arranged anywhere on the plane. On this basis, the water outlet 3 can be arranged above the conical structure 12 to prevent the scale that falls into the conical structure 12 from entering the water outlet 3. Of course, in other embodiments, the water outlet 3 can also be arranged on the uppermost part of the conical structure 12.

[0031] The scraper descaling mechanism 4 also includes a driving unit 6 and a scraper shaft 5 vertically arranged at the axis of the tank body 1. The driving unit 6 is a motor arranged at the top of the tank body 1, and the output shaft of the motor is arranged along the axial direction of the tank body 1. The scraper shaft 5 is arranged at the axis of the tank body 1, and one end of it is connected to the driving motor in a transmission manner, and the other end passes through the water purification filter structure 8 and extends into the drainage cavity. The first scraper 9 is fixed on the scraper shaft 5 at a position corresponding to the filter structure 8, and the side of the first scraper 9 used for scraping scale is in contact with the upper surface of the filter structure 8. The second scraper 10 is fixed at the end of the scraper shaft 5 to scrape the bottom of the tank body 1. Since the first scraper 9 and the second scraper 10 are arranged on the same scraper shaft 5, the first scraper 9 and the second scraper 10 can rotate synchronously. In this way, on the one hand, the filter structure 8 and the bottom of the tank body 1 can be scraped and washed at the same time, which effectively improves the efficiency of scraping scale of the heat storage tank; on the other hand, such a setting is also conducive to simplifying the structure, which can effectively reduce the processing and assembly costs of the scraper descaling mechanism 4.

[0032] The first scraper 9 is a straight plate with one side attached to the filter structure 8. One end of the straight plate is fixed on the scraping shaft 5, and the other end is close to the side wall of the tank body 1. Such a setting enables the first scraper 9 to scrape the filter structure 8 comprehensively and fully. The second scraper 10 is a straight plate arranged obliquely along the generatrix of the conical structure 12, so as to fully scrape the bottom of the tank body 1 with the conical structure 12. A fixed connecting rod 13 is arranged between the second scraper 10 and the scraping shaft 5, so that the second scraper 10 can be fixedly connected to the scraping shaft 5 in the current posture. Such a setting does not require the second scraper 10 and the fixed connecting rod 13 to be processed into a special shape, thereby reducing the processing cost of the second scraper 10 and the fixed connecting rod 13. In addition, it can also reduce the resistance of the water flow to the second scraper 10 when the second scraper 10 is scraping, thereby ensuring that the second scraper 10 can have a higher rotation speed when scraping, so that the second scraper 10 can quickly and thoroughly remove scale. In other embodiments, the second scraper 10 can also be an integrally formed vertical plate. One side of the vertical plate is fixedly connected to the scraping shaft 5, and the side of the vertical plate used for scraping the bottom of the tank body 1 is processed into an inclined surface to ensure that the inclined surface can fit the conical surface of the bottom of the tank body 1. A flow hole is provided on the vertical plate to allow water to flow through. One end of the second scraper 10 is aligned with the edge of the sewage outlet 11, and the other end is close to the side wall of the tank body 1, so that the second scraper 10 can fully scrape the conical structure 12.

[0033] In this embodiment, the tank body 1 preferably adopts an integrated sealed tank body 1, so that unnecessary connection gaps on the tank body 1 can be avoided to prevent heat from being lost through the connection gaps. An exhaust pipe 7 is provided on the tank body 1 to balance the air pressure inside the sealed tank body 1 and the outside. Of course, the tank body 1 can also adopt a tank body 1 with a separate opening cover, and on this basis, a ventilation valve can also be used to replace the exhaust pipe 7.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the description and drawings of the present invention shall be included in the protection scope of the present invention.

Claims

1. A heat storage tank, comprising a tank body and a scraper descaling mechanism arranged in the tank body, the tank body is provided with a water inlet and a water outlet arranged up and down, and a sewage outlet is provided at the bottom of the tank body; characterized in that: A filtering structure is arranged in the tank body between the water inlet and the water outlet; the scraper descaling mechanism comprises a first scraper for scraping the upper surface of the filtering structure and a second scraper for scraping the bottom of the tank body.

2. The heat storage tank according to claim 1, characterized in that: The filtering structure is arranged at a position of the tank body close to the bottom of the tank body.

3. The heat storage tank according to claim 2, characterized in that: The water outlet is arranged close to the filtering structure.

4. The heat storage tank according to any one of claims 1 to 3, characterized in that: The bottom of the tank body is in a conical structure with the tip pointing downward, and the sewage outlet is arranged at the lowest point of the conical structure.

5. The heat storage tank according to claim 4, characterized in that: The water outlet is arranged above the conical structure.

6. The heat storage tank according to claim 4, characterized in that: The scraper cleaning mechanism has a scraping shaft connected to the drive motor and is vertically arranged at the axis of the tank body, and one end of the scraping shaft passes through the filter structure and extends to the bottom of the tank body; the first scraper and the second scraper are both fixedly arranged on the scraping shaft so as to rotate synchronously with the scraping shaft.

7. The heat storage tank according to claim 6, characterized in that: The first scraper is a straight plate with one side in contact with the filtering structure; one end of the straight plate is fixed on the scraping and washing shaft, and the other end is close to the side wall of the tank body.

8. The heat storage tank according to claim 6, characterized in that: The second scraper is arranged obliquely along the generatrix of the tapered structure, and a fixed connecting rod is provided between the second scraper and the scraping shaft so that the second scraper is fixedly connected to the scraping shaft.

9. The heat storage tank according to claim 8, characterized in that: One end of the second scraper is aligned with the edge of the sewage outlet, and the other end is close to the side wall of the tank body.

10. The heat storage tank according to any one of claims 1 to 3, characterized in that: The tank body is an integrated sealed tank body, and an exhaust pipe is arranged on the tank body.

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