Multi-stage pressurizing structure of variable-frequency water supply device

Abstract

The utility model relates to the technical field of marine air conditioners, and discloses a multi-stage pressurizing structure of a variable-frequency water supply device, which comprises a water inlet pipe, the water inlet pipe is communicated with an external water source, a plurality of pressurizing valves are communicated on the water inlet pipe, and high-pressure ends of the pressurizing valves are respectively connected with corresponding pressurizing pumps. A water outlet pipe is jointly connected to the multiple booster pumps, the other end of the water outlet pipe communicates with the water storage tank, first impellers are fixedly installed on rotating shafts of the booster pumps, second impellers are rotationally connected to the rotating shafts, the first impellers are arranged at the ends close to the water inlet pipe, and pushing mechanisms are installed in the booster pumps; the output end of the pushing mechanism is connected with the rotating shaft in a sliding mode and can be clamped with the second impeller, the problem that water supply is insufficient easily when the water consumption is increased sharply is solved, a selectable two-stage pressurizing structure is arranged in the pressurizing pump, the water inlet pressurizing speed is increased, and excessive energy consumption is avoided while water supply stability is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of marine air conditioners, and more specifically, to a multi-stage pressurization structure of a variable frequency water supply device. Background Art

[0002] The variable frequency water supply device is a device that uses a frequency converter to control the motor to continuously change the speed of the water pump while keeping constant feedback from the pressure or flow sensor, thereby continuously changing the flow of the water pump to adapt to the user's water demand.

[0003] Usually, a water tank is set up, and water is stored in the water tank through a booster pump. When the pressure in the water tank drops to a certain value, the booster pump is started to replenish water to ensure the timeliness of water supply. However, it takes a certain amount of time for the pump to start and output high-pressure water flow. When a large amount of water is used suddenly, it is easy to cause the water pressure in the water tank to drop rapidly and replenishment is not timely, which ultimately affects the user's use. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a multi-stage boosting structure of a variable frequency water supply device with a fast boosting speed.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A multi-stage boosting structure of a variable frequency water supply device comprises a water inlet pipe, the water inlet pipe is connected to an external water source, the water inlet pipe is connected to a plurality of boosting valves, the high-pressure ends of the plurality of boosting valves are respectively connected to corresponding boosting pumps, the plurality of boosting pumps are commonly connected to a water outlet pipe, the other end of the water outlet pipe is connected to a water storage tank, an impeller 1 is fixedly mounted on a rotating shaft of the boosting pump, an impeller 2 is rotatably connected to the rotating shaft, the impeller 1 is arranged near one end of the water inlet pipe, a pushing mechanism is installed in the boosting pump, and an output end of the pushing mechanism is slidably connected to the rotating shaft and can be engaged with the impeller 2.

[0007] The utility model is further configured as follows: the booster pump includes a shell, a sealing plate is arranged in the shell, the sealing plate is arranged at one end away from the water inlet pipe, a cooling chamber is installed above the shell, an isolation chamber is between the sealing plate and the cooling chamber, the side of the sealing plate away from the cooling chamber is a pump chamber, a motor is installed above the cooling chamber, the rotating shaft is connected to the output shaft of the motor, the rotating shaft passes through the cooling chamber and the sealing plate, and the pushing mechanism is installed at the bottom of the cooling chamber.

[0008] The utility model is further configured as follows: the pushing mechanism includes a plurality of electric push rods, the electric push rods are fixed on the cooling chamber, the output shafts of the electric push rods are connected with connecting rods, the connecting rods penetrate the sealing plate, a transmission disk is commonly connected to one end of the plurality of connecting rods extending into the pump chamber, a push block is rotatably connected to the transmission disk, the push block is slidably connected to the rotating shaft, and the push block can be engaged with the impeller in two phases.

[0009] The utility model is further configured as follows: a plurality of tooth grooves are provided on the end surface of the impeller 2 facing the push block, the tooth shape of the tooth groove is a right-angled trapezoid, the right-angled side of the right-angled trapezoid is opposite to the rotation direction of the rotating shaft, and a plurality of teeth are correspondingly arranged on the push block, and the teeth are correspondingly engaged with the tooth grooves.

[0010] The utility model is further configured as follows: an inner shell is arranged inside the outer shell, a partition plate is arranged between the outer shell and the inner shell, an inlet flange and an outlet flange are connected to the outer shell, the inlet flange and the outlet flange are arranged on both sides of the partition plate, and a water inlet and a water outlet are opened at one end of the inner shell away from the motor, the water inlet and the inlet flange are arranged on the same side of the partition plate, and the water outlet and the outlet flange are arranged on the same side of the partition plate.

[0011] The utility model is further configured as follows: a partition frame is arranged in the inner shell, the partition frame divides the pump chamber into boost chamber one and boost chamber two, the impeller one is arranged in boost chamber one, the impeller two is arranged in boost chamber two, the boost chamber one is connected with the boost chamber two, a through hole is opened on the boost chamber two, and the through hole connects the boost chamber two with the water outlet.

[0012] The utility model is further configured as follows: a packing seal is arranged between the sealing plate and the rotating shaft, and a plurality of sealing rings are arranged between the sealing plate and the connecting rod.

[0013] The advantages of the utility model are:

[0014] The booster pump is set to a bipolar boosting structure. When the water pressure in the water tank drops sharply, the pushing mechanism starts, and the electric push rod pushes the transmission plate through the connecting rod, thereby pushing the push block to move in the direction of impeller two until the teeth of the push block are engaged with the tooth grooves on the end faces of impeller two. At this time, the rotating shaft drives impeller two to rotate through the push block, and the water flow pressurized by impeller one is pressurized twice by impeller two, which increases the water pressure at the water outlet and the boosting speed of the booster pump, so that the stored water can be replenished faster. When the water pressure in the water tank decreases slowly, the pushing mechanism does not work, and the booster pump can meet the water supply demand by only pressurizing once through impeller one, saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0016] Figure 2 Schematic diagram of the booster pump structure of the present utility model;

[0017] Figure 3 Along the Figure 2 A - A sectional view shown;

[0018] Figure 4 Along the Figure 2 B - B sectional view shown;

[0019] Figure 5 For Figure 4 Enlarged view of part C shown;

[0020] Figure 6 Schematic diagram of the connection structure between the movable impeller and the push block of the present utility model;

[0021] In the figure: 1, water inlet pipe; 2, booster valve; 3, booster pump; 31, outer shell; 311, inlet flange; 312, outlet flange; 313, partition plate; 314, water inlet; 315, water outlet; 32, rotating shaft; 33, inner shell; 331, partition frame; 332, first booster chamber; 333, second booster chamber; 34, first impeller; 35, second impeller; 351, tooth groove; 36, through hole; 37, sealing plate; 371, packing seal; 372, sealing ring; 4, water outlet pipe; 5, water storage tank; 6, motor; 7, cooling chamber; 8, pushing mechanism; 81, electric push rod; 82, connecting rod; 83, transmission disc; 84, push block; 841, tooth. Specific embodiments

[0022] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0023] It should be pointed out that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0024] In the present utility model, unless otherwise stated, the orientations such as "up, down" are usually in the directions shown in the drawings, or in the vertical, perpendicular or gravitational directions; similarly, for ease of understanding and description, "left, right" are usually in the left and right directions shown in the drawings; "inside, outside" refer to the inside and outside relative to the contours of each component itself, but the above orientation terms are not used to limit the present utility model.

[0025] Please refer to Figures 1-6 , the present utility model provides the following technical solutions:

[0026] A multi-stage pressurization structure of a variable-frequency water supply device, including a water inlet pipe 1, which is connected to an external water source. A number of pressurization valves 2 are connected to the water inlet pipe 1. The high-pressure ends of the number of pressurization valves 2 are respectively connected to corresponding pressurization pumps 3. The pressurization valve 2 can increase the water inlet pressure of the pressurization pump 3, thereby increasing the water outlet pressure of the pressurization pump 3, with high efficiency originally;

[0027] A water outlet pipe 4 is commonly connected to the number of pressurization pumps 3. The other end of the water outlet pipe 4 is connected to a water storage tank 5. The high-pressure water flow passing through the pressurization pump 3 enters the water storage tank 5 and is stored. The stored water in the water storage tank 5 has certain water pressure requirements to ensure that water can be discharged in time and stably when users use it;

[0028] An impeller one 34 is fixedly installed on the rotating shaft 32 of the pressurization pump 3. An impeller two 35 is rotatably connected to the rotating shaft 32. The impeller one 34 is arranged at one end close to the water inlet pipe 1. A pushing mechanism 8 is installed in the pressurization pump 3. The output end of the pushing mechanism 8 is slidably connected to the rotating shaft 32 and can be engaged with the impeller two 35;

[0029] In normal water use situations, the water pressure in the water storage tank 5 decreases slowly. The pressurization pump 3 is started. At this time, the pressurization pump 3 only pressurizes the incoming water through the impeller one 34, and its pressurization speed and water output can meet the water replenishment requirements of the water storage tank 5;

[0030] When the water consumption is large and the water pressure in the water storage tank 5 decreases rapidly, the pushing mechanism 8 is started. The pushing mechanism 8 is engaged with the impeller two 35. The rotating shaft 32 drives the impeller two 35 to rotate through the pushing mechanism 8. At this time, the incoming water is pressurized once by the impeller one 34 and then pressurized twice by the impeller two 35, increasing the water outlet pressure and the water replenishment efficiency, which can meet the water replenishment needs of the water storage tank 5. Compared with starting multiple pressurization pumps 3 for water replenishment, the energy consumption of this solution is lower;

[0031] In special cases, the water pressure in the water storage tank 5 drops sharply. At this time, the pressurization pump 3 works with both the impeller one 34 and the impeller two 35 at the same time, and multiple pressurization pumps 3 are also enabled at the same time, greatly improving the water replenishment efficiency.

[0032] The booster pump 3 includes a shell 31, a sealing plate 37 is arranged in the shell 31, and the sealing plate 37 is arranged at one end away from the water inlet pipe 1. A cooling chamber 7 is installed above the shell 31. There is an isolation chamber between the sealing plate 37 and the cooling chamber 7. The isolation chamber has almost no leakage. The driving part of the driving mechanism 8 can be installed therein, thereby extending the service life of the driving mechanism 8; the lower part of the sealing plate 37 is a pump chamber, and the upper part of the cooling chamber 7 is equipped with a motor 6. The rotating shaft 32 is connected to the output shaft of the motor 6. The rotating shaft 32 passes through the cooling chamber 7 and the sealing plate 37. A packing seal 371 is arranged between the sealing plate 37 and the rotating shaft 32. The packing seal 371 can achieve good sealing for the rotating structure rotating shaft 32, thereby ensuring the sealing performance of the sealing plate 37. The rotating shaft 32 extends into the pump chamber and is equipped with an impeller 1 34 and an impeller 2 35;

[0033] The pushing mechanism 8 includes a plurality of electric push rods 81, which are fixed at the bottom of the cooling chamber 7. The output shafts of the electric push rods 81 are connected with connecting rods 82, which penetrate the sealing plate 37. A plurality of sealing rings 372 are arranged between the sealing plate 37 and the connecting rods 82, so as to avoid leakage when the connecting rods 82 move and ensure the sealing performance of the sealing plate 37. A transmission plate 83 is commonly connected to one end of the plurality of connecting rods 82 extending into the pump chamber, and a push block 84 is rotatably connected to the transmission plate 83. The push block 84 is slidably connected to the rotating shaft 32, and the push block 84 can be engaged with the impeller 2 35;

[0034] A plurality of tooth grooves 351 are provided on the end surface of the impeller 35 facing the push block 84. The tooth shape of the tooth groove 351 is a right-angled trapezoid. The right-angled side of the right-angled trapezoid is opposite to the rotation direction of the rotating shaft 32. The push block 84 pushes the impeller 35 to rotate through the right-angled side without slipping, thereby ensuring the stability of the transmission. A plurality of teeth 841 are correspondingly provided on the push block 84, and the teeth 841 are correspondingly engaged with the tooth grooves 351.

[0035] When the pushing mechanism 8 is started, the output shaft of the electric push rod 81 extends out, and the connecting rod 82 extends into the pump chamber, thereby pushing the push block 84 to move toward the impeller 2 35 through the transmission plate 83 until the teeth 841 are engaged with the tooth grooves 351. At this time, the rotating shaft 32 drives the impeller 2 35 to rotate through the push block 84, thereby realizing the secondary pressurization.

[0036] An inner shell 33 is arranged inside the outer shell 31, a partition plate 313 is arranged between the outer shell 31 and the inner shell 33, an inlet flange 311 and an outlet flange 312 are connected to the outer shell 31, the inlet flange 311 and the outlet flange 312 are arranged on both sides of the partition plate 313, and a water inlet 314 and a water outlet 315 are opened at one end of the inner shell 33 away from the motor 6, the water inlet 314 and the inlet flange 311 are arranged on the same side of the partition plate 313, and the water outlet 315 and the outlet flange 312 are arranged on the same side of the partition plate 313;

[0037] A partition rack 331 is arranged inside the inner shell 33. The partition rack 331 divides the pump chamber into a first pressurizing chamber 332 and a second pressurizing chamber 333. An impeller 34 is arranged in the first pressurizing chamber 332, and an impeller 35 is arranged in the second pressurizing chamber 333. The first pressurizing chamber 332 communicates with the second pressurizing chamber 333. A through hole 36 is formed in the second pressurizing chamber 333, and the through hole 36 communicates the second pressurizing chamber 333 with the water outlet 315.

[0038] When the booster pump 3 works, water flows into the outer shell 31 from the inlet flange 311, and then enters the pump chamber through the water inlet 314. The low-pressure water flow entering the pump chamber is pressurized by the booster pump 3 and output through the through hole 36, and then enters the water outlet pipe 4 from the water outlet 315 through the outlet flange 312, and finally is stored in the water storage tank 5.

[0039] The booster pump 3 is set as a double-layer structure of the outer shell 31 and the inner shell 33, and the final outlet flange 312 is placed at a position flush with the inlet flange 311, ensuring the symmetry of the overall structure of the booster pump 3 and reducing shaking.

[0040] Specifically, the booster pump 3 is set as a bipolar pressurizing structure. When the water pressure in the water storage tank 5 drops sharply, the pushing mechanism 8 is activated. The electric push rod 81 pushes the transmission disk 83 through the connecting rod 82, thereby pushing the push block 84 to move towards the impeller 35 until the tooth 841 of the push block 84 engages with the tooth groove 351 on the end face of the impeller 35. At this time, the rotating shaft 32 drives the impeller 35 to rotate through the push block 84. The water flow pressurized by the impeller 34 is pressurized again by the impeller 35, increasing the water pressure at the water outlet 315 and the pressurizing speed of the booster pump 3, enabling faster replenishment of stored water. When the water pressure in the water storage tank 5 drops slowly, the pushing mechanism 8 does not work, and the booster pump 3 can meet the water supply demand only by performing a single pressurization through the impeller 34, saving energy.

[0041] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, not all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0042] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0043] It should be noted that the terms "first", "second", etc. in the description, claims and the above-mentioned drawings of this application are used to distinguish similar counterparts, and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here.

[0044] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A multi-stage pressurization structure of a variable-frequency water supply device, including a water inlet pipe (1), the water inlet pipe (1) is connected to an external water source, and is characterized in that: The water inlet pipe (1) is connected to a plurality of boosting valves (2), the high-pressure ends of the plurality of boosting valves (2) are respectively connected to corresponding boosting pumps (3), the plurality of boosting pumps (3) are commonly connected to a water outlet pipe (4), the other end of the water outlet pipe (4) is connected to a water storage tank (5), an impeller 1 (34) is fixedly mounted on a rotating shaft (32) of the boosting pump (3), an impeller 2 (35) is rotatably connected to the rotating shaft (32), the impeller 1 (34) is arranged near one end of the water inlet pipe (1), a driving mechanism (8) is installed in the boosting pump (3), the output end of the driving mechanism (8) is slidably connected to the rotating shaft (32) and can be engaged with the impeller 2 (35).

2. The multi-stage pressurization structure of a variable-frequency water supply device according to claim 1, wherein: The booster pump (3) comprises a shell (31), a sealing plate (37) is arranged in the shell (31), the sealing plate (37) is arranged at the end away from the water inlet pipe (1), a cooling chamber (7) is installed above the shell (31), an isolation chamber is formed between the sealing plate (37) and the cooling chamber (7), a pump chamber is formed on the side of the sealing plate (37) away from the cooling chamber (7), a motor (6) is installed above the cooling chamber (7), the rotating shaft (32) is connected to the output shaft of the motor (6), the rotating shaft (32) passes through the cooling chamber (7) and the sealing plate (37), and the pushing mechanism (8) is installed at the bottom of the cooling chamber (7).

3. The multi-stage pressurization structure of a variable-frequency water supply device according to claim 2, characterized in that: The pushing mechanism (8) comprises a plurality of electric push rods (81), the electric push rods (81) being fixed on the cooling chamber (7), the output shafts of the electric push rods (81) being connected with connecting rods (82), the connecting rods (82) penetrating the sealing plate (37), the ends of the plurality of connecting rods (82) extending into the pump chamber being commonly connected with a transmission disk (83), the transmission disk (83) being rotatably connected with a push block (84), the push block (84) being slidably connected with the rotating shaft (32), and the push block (84) being capable of being engaged with the second impeller (35).

4. The multi-stage pressurization structure of a variable-frequency water supply device according to claim 3, characterized in that: The end surface of the impeller 2 (35) facing the push block (84) is provided with a plurality of tooth grooves (351), the tooth shape of the tooth grooves (351) is a right-angled trapezoid, the right-angled sides of the right-angled trapezoid are opposite to the rotation direction of the rotating shaft (32), and the push block (84) is correspondingly provided with a plurality of teeth (841), and the teeth (841) are correspondingly engaged with the tooth grooves (351).

5. The multi-stage pressurization structure of a variable-frequency water supply device according to claim 4, characterized in that: An inner shell (33) is arranged inside the outer shell (31), a partition plate (313) is arranged between the outer shell (31) and the inner shell (33), an inlet flange (311) and an outlet flange (312) are connected to the outer shell (31), the inlet flange (311) and the outlet flange (312) are arranged on both sides of the partition plate (313), and a water inlet (314) and a water outlet (315) are provided at one end of the inner shell (33) away from the motor (6), the water inlet (314) and the inlet flange (311) are arranged on the same side of the partition plate (313), and the water outlet (315) and the outlet flange (312) are arranged on the same side of the partition plate (313).

6. The multi-stage pressurization structure of a variable-frequency water supply device according to claim 5, characterized in that: A partition frame (331) is arranged inside the inner shell (33). The partition frame (331) divides the pump chamber into a first pressurizing chamber (332) and a second pressurizing chamber (333). The first impeller (34) is arranged inside the first pressurizing chamber (332), and the second impeller (35) is arranged inside the second pressurizing chamber (333). The first pressurizing chamber (332) communicates with the second pressurizing chamber (333). A through hole (36) is formed in the second pressurizing chamber (333), and the through hole (36) communicates the second pressurizing chamber (333) with the water outlet (315).

7. The multi-stage pressurization structure of a variable-frequency water supply device according to claim 6, characterized in that: A stuffing seal (371) is arranged between the sealing plate (37) and the rotating shaft (32), and a plurality of sealing rings (372) are arranged between the sealing plate (37) and the connecting rod (82).

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