Two-pipe rubber ball cleaning device and heat exchange equipment

Abstract

The utility model provides a two-pipe rubber ball cleaning device which comprises an upper ball storage chamber defined by the upper portion of a cylindrical wall, and the upper ball storage chamber is provided with a window for replacing rubber balls, a first opening connected with a ball receiving pipe and a second opening connected with a descending pipe; the lower ball storage chamber is defined by the lower portion of the cylindrical wall, and a third opening connected with the ascending pipe and a fourth opening connected with the ball serving pipe are formed in the lower ball storage chamber; the electric control valve is arranged between the upper ball storage chamber and the lower ball storage chamber and used for connecting / disconnecting the upper ball storage chamber and the lower ball storage chamber; a water delivery pump; a first end opening of the downcomer is connected to a second opening of the upper ball storage chamber, and a second end opening of the downcomer is connected to a water inlet of the water delivery pump; a first end opening of the ascending pipe extends into the cavity of the lower ball storage chamber through the third opening of the lower ball storage chamber, and a second end opening of the ascending pipe is connected to a water outlet of the water delivery pump; the ball receiving pipe is connected with the first opening of the upper ball storage chamber; and the ball serving pipe is connected with the fourth opening of the lower ball storage chamber. The utility model further provides heat exchange equipment comprising the two-pipe rubber ball cleaning device.

Description

Technical Field

[0001] The utility model relates to the technical field of online cleaning of heat exchange equipment, in particular to a two-tube rubber ball cleaning device and a heat exchange equipment comprising the two-tube rubber ball cleaning device. Background Art

[0002] Some heat exchange equipment (such as the condenser of a central air conditioner) has multiple heat exchange tubes, and cooling water circulates inside to exchange heat with a heat medium. After running for a period of time, sludge, dissolved salts, etc. in the cooling water will be deposited on the inner wall of the heat exchange tube, resulting in a decrease in heat exchange efficiency. For this reason, a rubber ball cleaning device is used in the art to perform online cleaning of the heat exchange tube. This rubber ball cleaning device has an inlet pipe and an outlet pipe, and a ball sending and receiving mechanism connected to the inlet pipe and the outlet pipe. The ball sending and receiving mechanism is used to send a rubber ball to the inlet pipe, and the rubber ball enters the heat exchange tube with the inlet water. As the rubber ball squeezes and scrubs the inner wall of the heat exchange tube, the sediment on the inner wall of the heat exchange tube is removed, and then the rubber ball leaves the heat exchange tube with the outlet water and is recovered by the ball sending and receiving device at the outlet pipe.

[0003] There are many problems with existing rubber ball cleaning devices. Some rubber ball cleaning devices have an upper ball storage chamber and a lower ball storage chamber. In order to achieve the connection and disconnection between the upper and lower ball storage chambers, a check valve is provided between the upper and lower ball storage chambers. However, since the check valve will suddenly close when the water pump is started, it often produces large impact vibration and abnormal noise. Long-term operation may cause problems such as loose bolts, pipe leakage, and damage to equipment. In order to prevent the backflow of rubber balls, some rubber ball cleaning devices are equipped with a filter to prevent the backflow of rubber balls in the lower ball storage chamber, and a check valve is provided on the ball delivery pipe, which increases the complexity of the equipment to a certain extent, increases the running water resistance, makes the head configuration requirements of the water pump higher, and increases the running power consumption of the water pump. The check valve provided on the ball delivery pipe also increases the risk of ball jamming in the pipeline and rubber ball wear. Some other rubber ball cleaning devices adopt a four-pipe vertical structure, and use two water delivery pumps to control the water inlet pipe, the water outlet pipe, the ball receiving pipe, and the ball delivery pipe respectively, which makes the equipment pipeline numerous, the installation complex, and the equipment size and floor space large, which correspondingly increases the manufacturing cost and installation cost.

[0004] In order to at least overcome the above problems in the prior art, the utility model aims to provide a two-pipe rubber ball cleaning device with a simplified structure and stable operation, and to provide a heat exchange device with improved performance. Utility Model Content

[0005] In a first aspect of the utility model, a two-tube rubber ball cleaning device is provided, comprising: an upper ball storage chamber, which is surrounded by the upper part of a cylindrical wall and is provided with a window for replacing rubber balls, a first opening connected to a ball receiving tube and a second opening connected to a descending tube; a lower ball storage chamber, which is surrounded by the lower part of a cylindrical wall and is provided with a third opening connected to an ascending tube and a fourth opening connected to a ball delivery tube; an electric control valve, which is arranged between the upper ball storage chamber and the lower ball storage chamber and is used to connect or cut off the connection between the upper ball storage chamber and the lower ball storage chamber; a water delivery pump, which is provided with a water inlet and a water outlet; a descending tube, whose first end opening is connected to the second opening of the upper ball storage chamber and whose second end opening is connected to the water inlet of the water delivery pump; an ascending tube, whose first end opening extends into the cavity of the lower ball storage chamber through the third opening of the lower ball storage chamber and whose second end opening is connected to the water outlet of the water delivery pump; a ball receiving tube, which is connected to the first opening of the upper ball storage chamber; and a ball delivery tube, which is connected to the fourth opening of the lower ball storage chamber.

[0006] According to the scheme, the rubber ball cleaning device adopts a two-pipe structure, that is, the rubber ball cleaning device is connected to the system through two pipes, the ball receiving pipe and the ball sending pipe, with a small number of pipes and easy installation; an electric control valve is used between the upper ball storage chamber and the lower ball storage chamber, which can actively control the opening and closing of the valve plate to avoid violent impact and vibration caused by sudden closure of the valve plate when the water pump is started, making the equipment operation safer; when the device is not in operation, the rubber balls can be stored in the upper ball storage chamber for a long time, which is convenient for observing the number and wear of the rubber balls at any time and facilitating replacement; the check valve is eliminated from the device's ball sending pipe, and the filter is eliminated from the lower ball storage chamber, which reduces the operating water resistance and can be equipped with a water pump with a lower lift, reducing the operating energy consumption; eliminating the check valve of the ball sending pipe can also reduce the chance of the rubber ball being stuck, making the equipment operation safer and more stable.

[0007] In this scheme, when the electric control valve and the water pump of the rubber ball cleaning device are closed, the upper and lower ball storage chambers are not connected, the system does not work, and the rubber balls are stored in the upper ball storage chamber. The operation of taking / putting the balls can be performed. The drain valve and the exhaust valve are opened in sequence to drain the water in the upper ball storage chamber to take / put the balls; when the electric control valve is opened, the valve plate opens downward, and the rubber balls fall into the lower ball storage chamber; when all the rubber balls fall into the lower ball storage chamber, the electric control valve is closed, the water pump is started, and the water flows into the upper ball storage chamber through the ball receiving pipe, and then flows along the downcomer and the upcomer. Enter the lower ball storage chamber, and flush the rubber balls in the lower ball storage chamber to the ball serving pipe to realize ball serving. After the rubber balls enter the main pipeline of the heat exchange equipment for cleaning, under the suction of the water delivery pump, the rubber balls enter the upper ball storage chamber with the water flow and are intercepted in the upper ball storage chamber by the filter screen. The water enters the downcomer and then enters the lower ball storage chamber along the upcomer to flush the rubber balls out, realizing simultaneous collection / serving of balls. After all the rubber balls enter the upper ball storage chamber, the ball collection is completed, the water delivery pump is turned off, the electric control valve is opened, and the next ball serving is waited for, thereby realizing stable operation of the system.

[0008] In some schemes, the electric control valve includes a valve plate, a rotating shaft, a sealing ring, and a sealing flange. The rotating shaft is arranged on the side wall of the cylindrical wall and is driven by a driving motor to rotate to drive the valve plate to open or close. When the valve plate is closed, it is crimped onto the sealing flange arranged on the inner side of the cylindrical wall through the sealing ring.

[0009] According to this solution, the electric control valve can actively control the opening and closing of the valve plate, thereby achieving connectivity or disconnection between the upper and lower ball storage chambers. The alternating opening of the electric control valve and the water pump can enable the system to stably switch between different working states, avoiding severe impact or vibration caused by sudden closure of the valve plate when the water pump is started, thereby ensuring the stability and safety of equipment operation.

[0010] In some solutions, when the valve plate is opened downward, the valve plate can block the first end opening of the riser to prevent the rubber ball from entering the riser and the water pump.

[0011] According to this scheme, after the electric control valve is opened, the upper and lower ball storage chambers are connected, and the rubber ball falls from the upper ball storage chamber into the lower ball storage chamber. Because the first end opening of the riser is blocked by the valve plate, the rubber ball can be prevented from falling into the riser and the water pump while falling into the lower ball storage chamber, thereby preventing the system from being blocked and operating problems.

[0012] In some solutions, when the valve plate is opened downward, the valve plate guides the rubber ball to move toward the fourth opening.

[0013] According to the scheme, after the electric control valve is opened, the upper and lower ball storage chambers are connected, and the rubber ball falls from the upper ball storage chamber into the lower ball storage chamber. The valve plate opens downward to guide the rubber ball to move toward the fourth opening of the lower ball storage chamber, promoting the rubber ball to enter the ball launching tube through the fourth opening. After all the rubber balls have fallen into the lower ball storage chamber, the electric control valve is closed, the water pump is turned on, water flows into the lower ball storage chamber, and flows through the ball launching tube to flush the rubber balls out. The ball launching efficiency is high and the cleaning efficiency can be improved.

[0014] In some solutions, a filter screen is provided inside the upper ball storage chamber to prevent the rubber balls from entering the second opening.

[0015] According to this scheme, in the ball collecting / serving state, the filter will separate the rubber balls and water flowing from the ball collecting pipe into the upper ball storage chamber, intercept the rubber balls in the upper ball storage chamber, and collect the balls. At the same time, the water flow will continue to flow along the pipe into the lower ball storage chamber to flush the rubber balls out, completing the serving, achieving synchronous ball collecting / serving and making the system run smoothly and efficiently.

[0016] In some solutions, the filter screen is L-shaped. Here, the L-shape means that in a plane parallel to the axial direction, the filter screen has an L-shaped cross section, and the first end opening of the downcomer is located inside the L-shaped cross section.

[0017] According to this solution, the L-shaped filter has a streamlined structure and occupies a small space, which can reduce the running water resistance and make the water flow smoother. The L-shaped filter effectively blocks the opening of the first end of the downcomer, preventing some rubber balls from entering the downcomer and causing equipment blockage. The L-shaped structure can also prevent the rubber balls from being stuck in the filter when collecting the balls, reducing the wear of the rubber balls, preventing equipment blockage, and making the equipment operation more stable and safe.

[0018] In some solutions, a check valve is provided on the ball receiving pipe.

[0019] According to this scheme, the check valve and the water pump can prevent the rubber ball from flowing back and ensure the smooth operation of the equipment. When the water pump is turned on, the check valve will open, and the rubber ball can flow from the ball collecting pipe into the upper ball storage chamber to collect the ball. When the water pump is turned off, the check valve will close, so that neither the ball nor the water flow can return to the main pipeline of the device to interfere with the operation of the equipment, thereby ensuring the stable and safe operation of the system.

[0020] In some solutions, the first end opening of the riser pipe is closer to the electric control valve than the fourth opening of the lower ball storage chamber.

[0021] According to this solution, water flows into the lower ball storage chamber through the riser. Because the opening at the first end of the riser is closer to the electric control valve than the fourth opening of the lower ball storage chamber, a drop is formed between the opening at the first end of the riser and the fourth opening of the lower ball storage chamber. This makes the water flow have a greater impact force when impacting the rubber ball, which is beneficial for the rubber ball to be efficiently flushed out of the ball launching tube, resulting in high ball launching efficiency and improved cleaning efficiency.

[0022] In some schemes, the downcomer has a first 90-degree elbow, an intermediate pipe and a second 90-degree elbow. The first 90-degree elbow is connected to the second opening of the upper ball storage chamber, the second 90-degree elbow is connected to the water inlet of the water pump, and the central axis of the intermediate pipe is parallel to the central axis of the riser.

[0023] According to this plan, the water flow in the upper ball storage chamber enters the lower ball storage chamber through the downcomer and the upcomer for serving the balls. The number of pipes is small, which reduces the equipment size and floor space, and reduces the manufacturing cost and installation cost. Both ends of the downcomer adopt a 90-degree elbow design, and the central axis of the middle pipe is parallel to the central axis of the upcomer, which can make the water flow more evenly, reduce water flow resistance, and reduce the energy consumption of equipment operation.

[0024] In some embodiments, the serving tube has a third 90-degree elbow, and the inner diameter of the opening at one end of the elbow near the lower ball storage chamber is larger than the inner diameter of the opening at the other end.

[0025] According to the plan, the opening of the serving tube near the lower ball storage chamber is larger, which can allow more rubber balls to enter the serving tube through the fourth opening of the lower ball storage chamber in advance, ensuring that the rubber balls are at the lower position of the water flow difference, preparing for the smooth discharge of the rubber balls with the water flow, and avoiding the accumulation of rubber balls in the lower ball storage chamber and the inability to be effectively impacted by the water flow to cause blockage. The inner diameter of the opening of the serving tube elbow gradually decreases from the end near the lower ball storage chamber, which is conducive to the smooth change of water flow and the orderly and uniform discharge of the rubber balls.

[0026] In some schemes, a window for replacing rubber balls is provided at the top of the upper ball storage chamber, a first opening connected to the ball receiving tube and a second opening connected to the descending tube are provided on the side wall, and the first opening and the second opening are arranged opposite to each other; a third opening connected to the ascending tube and a fourth opening connected to the ball serving tube are provided at the bottom of the lower ball storage chamber.

[0027] According to the scheme, a window is provided on the top of the upper ball storage chamber to facilitate the observation and placement of the rubber ball. A first opening and a second opening are provided on the side wall of the upper ball storage chamber and are arranged relative to each other, so that the water flowing into the upper ball storage chamber from the first opening can enter the downcomer through the second opening more quickly and smoothly, thereby reducing the water flow distance, reducing water resistance, and reducing the energy consumption of equipment operation; a third opening and a fourth opening are provided on the bottom of the lower ball storage chamber, so that a certain drop can be formed after the water flows into the lower ball storage chamber, so that the rubber ball is at the lower position of the drop, thereby ensuring the smooth serving.

[0028] In a second aspect, a heat exchange device is provided, which includes the two-tube rubber ball cleaning device described in any one of the above items.

[0029] According to this solution, the heat exchange equipment can promptly remove sediments such as sludge and dissolved salts deposited on the inner wall of the heat exchange tube, thereby ensuring heat exchange efficiency, long operating life, and excellent comprehensive performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of a rubber ball cleaning device of the utility model is shown;

[0031] Figure 2 A cross-sectional view of the rubber ball cleaning device of the utility model in the ball taking / putting state is shown;

[0032] Figure 3 A cross-sectional view of the rubber ball cleaning device of the utility model in the rubber ball transfer state is shown;

[0033] Figure 4 A cross-sectional view of the rubber ball cleaning device of the utility model in the ball receiving / serving state is shown;

[0034] Figure numerals: 100 two-pipe rubber ball cleaning device; 110 cylindrical wall; 120 upper ball storage chamber; 121 window; 122 first opening; 123 second opening; 124 filter screen; 130 lower ball storage chamber; 131 third opening; 132 fourth opening; 140 electric control valve; 141 valve plate; 142 rotating shaft; 143 sealing ring; 144 sealing flange; 145 driving motor; 150 water pump; 151 water inlet; 152 water outlet; 160 down pipe; 161 first end opening of down pipe; 162 second end opening of down pipe; 163 first 90 degree elbow; 164 middle pipe; 165 second 90 degree elbow; 170 rising pipe; 171 first end opening of rising pipe, 172 second end opening of rising pipe; 180 ball receiving pipe; 181 check valve; 190 ball launching pipe; 191 third 90 degree elbow. DETAILED DESCRIPTION

[0035] In order to make the purpose, scheme and advantages of the technical solution of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described in conjunction with the drawings of the specific embodiments of the utility model. Unless otherwise specified, the terms used in this article have the usual meanings in the art. The same or corresponding reference numerals in the drawings represent the same or corresponding parts.

[0036] Figure 1 A schematic diagram of a rubber ball cleaning device of the utility model is shown. Figure 1 Combination Figure 4From the perspective of the present invention, the two-tube rubber ball cleaning device 100 includes: an upper ball storage chamber 120, which is surrounded by the upper part of the cylindrical wall 110 and is provided with a window 121 for replacing rubber balls, a first opening 122 connected to the ball receiving tube 180 and a second opening 123 connected to the descending tube 160; a lower ball storage chamber 130, which is surrounded by the lower part of the cylindrical wall 110 and is provided with a third opening 131 connected to the ascending tube 170 and a fourth opening 132 connected to the ball serving tube 190; an electric control valve 140, which is arranged between the upper ball storage chamber 120 and the lower ball storage chamber 130, and is used to connect or disconnect the connection between the upper ball storage chamber 120 and the lower ball storage chamber 130. The water delivery pump 150 is provided with a water inlet 151 and a water outlet 152; the downcomer 160, the first end opening 161 of which is connected to the second opening 123 of the ball storage chamber, and the second end opening 162 of which is connected to the water inlet 151 of the water delivery pump 150; the riser 170, the first end opening 171 of which extends into the cavity of the lower ball storage chamber 130 through the third opening 131 of the lower ball storage chamber 130, and the second end opening 172 of which is connected to the water outlet 152 of the water delivery pump 150; the ball receiving pipe 180, which is connected to the first opening 122 of the upper ball storage chamber 120; the ball delivery pipe 190, which is connected to the fourth opening 132 of the lower ball storage chamber 130. Since the electric control valve 140 is used between the upper ball storage chamber 120 and the lower ball storage chamber 130 of the rubber ball cleaning device 100, the valve plate 141 can be actively controlled to open and close, so as to avoid the sudden closure of the valve plate 141 when the water pump is started, causing severe impact and vibration, and ensure safer operation of the equipment.

[0037] In the illustrated embodiment, a check valve 181 is provided on the ball receiving pipe 180 of the rubber ball cleaning device 100. The check valve 181 cooperates with the water delivery pump 150 to prevent the rubber ball from flowing back, ensuring the smooth operation of the device. When the water delivery pump 150 is turned on, the check valve 181 is opened, and the rubber ball can flow from the ball receiving pipe 180 into the upper ball storage chamber 120 to collect the ball. When the water delivery pump 150 is turned off, the check valve 181 is closed, so that the ball and the water flow cannot return to the main pipeline of the device to interfere with the operation of the device, thereby ensuring the stable and safe operation of the system. The above-mentioned scheme including the check valve 181 is only a specific embodiment, and the utility model is not limited thereto.

[0038] In the illustrated embodiment, a window 121 for replacing rubber balls is provided at the top of the upper ball storage chamber 120 of the rubber ball cleaning device 100, which is convenient for observing and taking and placing rubber balls; a first opening 122 connected to the ball receiving tube 180 and a second opening 123 connected to the descending tube 160 are provided on the side wall of the upper ball storage chamber 120, and the first opening 122 and the second opening 123 are arranged opposite to each other, so that the water flow entering the upper ball storage chamber 120 from the first opening 122 can enter the descending tube 160 more quickly and smoothly through the second opening 123, thereby reducing the water flow distance, reducing water resistance, and reducing the energy consumption of equipment operation; a third opening 131 connected to the ascending tube 170 and a fourth opening 132 connected to the serving tube 190 are provided at the bottom of the lower ball storage chamber 130, so that a certain drop can be formed after the water flow enters the lower ball storage chamber 130, so that the rubber balls are at the lower position of the drop, thereby ensuring the smooth serving. The above-mentioned scheme of the opening positions of the upper and lower ball storage chambers 130 is only a specific embodiment, and the utility model is not limited thereto.

[0039] Figure 2 A cross-sectional view of the rubber ball cleaning device 100 of the present invention is shown in the ball taking / putting state. In this state, the electric control valve 140 and the water pump 150 are both closed, the upper and lower ball storage chambers 130 are not connected, the system does not work, the rubber balls are stored in the upper ball storage chamber 120, and the ball taking / putting operation can be performed.

[0040] In the illustrated embodiment, a filter screen 124 is provided inside the upper ball storage chamber 120 to prevent the rubber balls from entering the downcomer 160, thereby achieving ball-water separation. The filter screen 124 blocks the rubber balls from entering the pipeline to avoid equipment blockage, thereby allowing the system to run smoothly and efficiently.

[0041] In this embodiment, the filter screen 124 is L-shaped. The L-shaped filter screen 124 has a simple structure and occupies a small space. It can reduce the running water resistance and make the water flow smoother and more uniform. The L-shaped filter screen 124 blocks the opening 161 at the first end of the downcomer 160, preventing some rubber balls from entering the downcomer 160 and causing equipment blockage. The L-shaped structure can also prevent the rubber balls from being stuck by the filter screen 124 when collecting the balls, reducing the wear of the rubber balls, preventing equipment blockage, and making the equipment run more stable and safe. However, the technical solution of the above-mentioned filter screen 124 is only a specific embodiment. The filter screen 124 can be L-shaped or other shapes. The above-mentioned filter screen 124 shape solution is also only a specific embodiment, and the utility model is not limited to this.

[0042] Figure 3 The cross-sectional view of the rubber ball cleaning device 100 of the present invention in the rubber ball transfer state is shown. In this state, the electric control valve 140 is opened, the valve plate 141 opens downward, and the rubber ball falls into the lower ball storage chamber 130.

[0043] In the illustrated embodiment, the electric control valve 140 includes a valve plate 141, a rotating shaft 142, a sealing ring 143, and a sealing flange 144. The rotating shaft 142 is arranged on the side wall of the cylindrical wall 110, and the rotating shaft 142 is driven to rotate by a driving motor 145 to drive the valve plate 141 to open or close. When the electric control valve 140 is closed, the valve plate 141 is pressed against the sealing flange 144 arranged on the inner side of the cylindrical wall 110 through the sealing ring 143, thereby cutting off the connection between the upper and lower ball storage chambers 130. When the electric control valve 140 is opened, the valve plate 141 opens downwards, blocking the first end opening 171 of the riser 170, which can prevent the rubber ball from falling into the riser 170 and the water pump 150, avoiding system blockage and operation obstacles. The valve plate 141 opens downwards and can guide the rubber ball to move toward the fourth opening 132 of the lower ball storage chamber 130, so that some rubber balls enter the ball delivery tube 190 through the fourth opening 132 of the lower ball storage chamber 130 in advance, avoiding the blockage of the rubber ball in the lower ball storage chamber 130 before delivery, preparing for the subsequent smooth delivery, improving the delivery efficiency, and improving the cleaning efficiency. However, the technical solution of the control valve in this embodiment is only a specific embodiment, and the utility model is not limited to this.

[0044] Figure 4 The cross-sectional view of the rubber ball cleaning device 100 of the utility model in the ball collecting / ball issuing state is shown. After all the rubber balls fall from the upper ball storage chamber 120 into the lower ball storage chamber 130, the electric control valve 140 is closed, and the water delivery pump 150 is started. The water flows into the upper ball storage chamber 120 through the ball collecting pipe 180, and then flows into the lower ball storage chamber 130 along the downcomer 160 and the upcomer 170, and the rubber balls in the lower ball storage chamber 130 are rushed to the ball issuing pipe 190, and the rubber balls enter the main pipeline of the heat exchange equipment and the cleaning is completed. Afterwards, under the suction of the water delivery pump 150, as the water flows into the upper ball storage chamber 120, it is intercepted in the upper ball storage chamber 120 by the filter screen 124, and the water enters the downcomer 160 through the filter screen 124 and then enters the lower ball storage chamber 130 along the ascending pipe 170, flushing the rubber balls out, realizing the simultaneous collection / delivery of the balls. After all the rubber balls have entered the upper ball storage chamber 120, the ball collection is completed, the water delivery pump 150 is turned off, the electric control valve 140 is opened, and the next delivery is waited for, thereby realizing the stable operation of the system.

[0045] In the illustrated embodiment, the first end opening 171 of the riser pipe 170 of the rubber ball cleaning device 100 is closer to the electric control valve 140 than the fourth opening 132 of the lower ball storage chamber 130. According to this solution, when water flows through the riser pipe 170 and flows into the lower ball storage chamber 130, a water flow drop is formed due to the position drop of the first end opening 171 of the riser pipe 170 and the fourth opening 132 of the lower ball storage chamber 130, so that the water flow has a greater impact force when impacting the rubber ball, which is conducive to the efficient rushing of the rubber ball from the ball delivery pipe 190, the ball delivery efficiency is high, and the cleaning efficiency is improved. The technical solution of the position distribution of the first end opening 171 of the riser pipe 170 and the fourth opening 132 of the lower ball storage chamber 130 is only a specific embodiment, and the utility model is not limited thereto.

[0046] In the illustrated embodiment, the ball-discharging tube 190 of the rubber ball cleaning device 100 has a third 90-degree elbow 191, and the inner diameter of the opening at one end of the elbow near the lower ball storage chamber 130 is larger than the inner diameter of the opening at the other end, so that more rubber balls can enter the ball-discharging tube 190 in advance through the fourth opening 132 of the lower ball storage chamber 130, ensuring that the rubber balls are at the lower position of the water flow drop, preparing for the smooth discharge of the rubber balls with the water flow, and avoiding the accumulation of rubber balls in the lower ball storage chamber 130 and being unable to be effectively impacted by the water flow and causing blockage. The inner diameter of the opening of the elbow of the ball-discharging tube 190 gradually decreases from one end near the lower ball storage chamber 130, which is conducive to the smooth change of the water flow, so that the rubber balls are discharged in an orderly and uniform manner. The technical solution of the inner diameter of the ball-discharging tube 190 is only a specific embodiment, and the utility model is not limited thereto.

[0047] In the illustrated embodiment, the downcomer 160 of the rubber ball cleaning device 100 has a first 90-degree elbow 163, an intermediate pipe 164 and a second 90-degree elbow 165. The first 90-degree elbow 163 is connected to the second opening 123 of the upper ball storage chamber 120, the second 90-degree elbow 165 is connected to the water inlet 151 of the water delivery pump 150, and the central axis of the intermediate pipe 164 is parallel to the central axis of the riser 170. The pipeline structure is simple and neatly designed, which can make the water flow more uniform, reduce water flow resistance, and reduce equipment operation energy consumption. The above-mentioned structure of the downcomer 160 and the technical solution of parallel arrangement of the central axis between the riser 170 are only specific embodiments, and the utility model is not limited to this.

[0048] This document describes in detail exemplary implementations of the present invention with reference to preferred embodiments. However, those skilled in the art will appreciate that, without departing from the concept of the present invention, various modifications and variations may be made to the above-mentioned specific embodiments, and various technical features and structures proposed in the present invention may be combined in various ways without exceeding the protection scope of the present invention, which is determined by the appended claims.

Claims

1. A two-tube rubber ball cleaning device, characterized in that: include: The upper ball storage chamber is surrounded by the upper part of the cylindrical wall and is provided with a window for replacing the rubber balls, a first opening for connecting the ball receiving tube and a second opening for connecting the descending tube; The lower ball storage chamber is surrounded by the lower part of the cylindrical wall and is provided with a third opening connected to the rising pipe and a fourth opening connected to the ball serving pipe; The electric control valve is arranged between the upper ball storage chamber and the lower ball storage chamber, and is used to connect or disconnect the communication between the upper ball storage chamber and the lower ball storage chamber; A water delivery pump having a water inlet and a water outlet; A downcomer, a first end opening of which is connected to the second opening of the upper ball storage chamber, and a second end opening of which is connected to the water inlet of the water delivery pump; A rising pipe, the first end opening of which extends into the cavity of the lower ball storage chamber through the third opening of the lower ball storage chamber, and the second end opening of which is connected to the water outlet of the water delivery pump; A ball receiving tube connected to the first opening of the upper ball storage chamber; A ball serving tube is connected to the fourth opening of the lower ball storage chamber.

2. The two-tube rubber ball cleaning device according to claim 1 is characterized in that: The electric control valve includes a valve plate, a rotating shaft, a sealing ring, and a sealing flange. The rotating shaft is arranged on the side wall of the cylindrical wall and is driven by a driving motor to rotate to drive the valve plate to open or close. When the valve plate is closed, it is crimped onto the sealing flange arranged on the inner side of the cylindrical wall through the sealing ring.

3. The two-tube rubber ball cleaning device according to claim 1 is characterized in that: When the valve plate is opened downward, the valve plate can block the first end opening of the riser to prevent the rubber ball from entering the riser and the water delivery pump.

4. The two-tube rubber ball cleaning device according to claim 1 or 3, characterized in that: When the valve plate opens downward, the valve plate guides the rubber ball to move toward the fourth opening.

5. The two-tube rubber ball cleaning device according to claim 1, characterized in that: A filter screen is arranged inside the upper ball storage chamber to prevent the rubber balls from entering the second opening.

6. The two-tube rubber ball cleaning device according to claim 5, characterized in that: The filter is L-shaped.

7. The two-tube rubber ball cleaning device according to claim 1, characterized in that: A check valve is provided on the ball receiving pipe.

8. The two-tube rubber ball cleaning device according to claim 1, characterized in that: The first end opening of the riser pipe is closer to the electric control valve than the fourth opening of the lower ball storage chamber.

9. The two-tube rubber ball cleaning device according to claim 1, characterized in that: The down pipe has a first 90-degree elbow, an intermediate pipe and a second 90-degree elbow. The first 90-degree elbow is connected to the second opening of the upper ball storage chamber, the second 90-degree elbow is connected to the water inlet of the water pump, and the central axis of the intermediate pipe is parallel to the central axis of the riser.

10. The two-tube rubber ball cleaning device according to claim 1, characterized in that: The serving tube has a third 90-degree elbow, and the inner diameter of the opening at one end of the elbow near the lower ball storage chamber is larger than the inner diameter of the opening at the other end.

11. The two-tube rubber ball cleaning device according to claim 1, characterized in that: A window for replacing rubber balls is provided on the top of the upper ball storage chamber, a first opening connected to the ball receiving tube and a second opening connected to the descending tube are provided on the side wall, and the first opening and the second opening are arranged oppositely; a third opening connected to the ascending tube and a fourth opening connected to the ball serving tube are provided at the bottom of the lower ball storage chamber.

12. A heat exchange device, characterized in that: A two-tube rubber ball cleaning device comprising any one of claims 1-11.

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