Small vortex pump with cooling water device

Abstract

The utility model discloses a small -size vortex pump with cooling water device, including motor, the pump body of setting in motor one side, the motor drive connection has in the pump body inside and rotates the pump shaft, and the end synchronous transmission of pump shaft is connected with the impeller, the pump body includes the pump base and pump cover sealed mounting connection difference with it, and the pump base is located in the one side of motor, the pump cover is located at the end of pump shaft, and the connecting place between pump base and pump shaft is provided with the shaft seal mechanism and the rotation between pump shaft and shaft seal mechanism, the connecting place between pump base and pump body forms first cavity and the second flow channel of cooling environment water circulation circulation, and the second flow channel is surrounded in first cavity outside, the rotation of pump shaft in first cavity interior, and the second flow channel of pump shaft and cavity do not communicate each other, the connecting place between pump cover and pump body forms the second cavity of the impeller placement and the first flow channel of the blade on the impeller inside second cavity movement.

Description

Technical Field

[0001] This utility model relates to the field of booster pumps, and in particular to small vortex pumps with cooling water devices. Background Technology

[0002] A vortex pump consists of a pump base, impeller, pump shaft, and pump cover. It converts mechanical energy into the kinetic and potential energy of the liquid by the force exerted by the rotating impeller on the liquid. The liquid in the impeller channel is thrown towards the pump body by centrifugal force, initially pressurizing it. Then, the liquid in the channel, due to the pressure created by the ejected liquid, re-enters the channel, resulting in further pressurization. This repeated vortex motion between the channel and the pump body achieves a higher outlet pressure and enables liquid transport.

[0003] Vortex pumps are more suitable for low-flow, high-head applications at room temperature. However, during operation, the shaft seal will generate heat due to friction, causing the temperature to rise. Excessive temperature will degrade the performance of the shaft seal material, accelerate aging, and even lead to shaft seal failure. Therefore, a small vortex pump with a cooling water device is proposed. Utility Model Content

[0004] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0005] A small vortex pump with a cooling water device includes a motor and a pump body located on one side of the motor. The motor drives a pump shaft that rotates inside the pump body, and an impeller is synchronously connected to the end of the pump shaft. The pump body includes a pump seat and a pump cover that are respectively sealed and installed with the pump body. The pump seat is located on one side of the motor, and the pump cover is located at the end of the pump shaft. The pump shaft passes through the pump seat, and a shaft sealing mechanism is provided at the connection between the pump seat and the pump shaft. The pump shaft rotates between the shaft sealing mechanism. The connection between the pump seat and the pump body forms a first cavity and a second flow channel for circulating cooling water. The second flow channel surrounds the outside of the first cavity. The pump shaft rotates inside the first cavity, and the second flow channel of the pump shaft is not connected to the cavity. The connection between the pump cover and the pump body forms a second cavity for placing the impeller and a first flow channel for the blades on the impeller to move inside the second cavity.

[0006] Preferably, the shaft sealing mechanism includes a second shaft sleeve disposed in the middle of the pump base, a first shaft sleeve located on one side of the second shaft sleeve and rotating coaxially with the pump shaft, and the first shaft sleeve located inside the first cavity. A second sealing ring is disposed between the second shaft sleeve and the pump shaft, and a first sealing ring is disposed between the first shaft sleeve and the pump shaft.

[0007] Preferably, a caliper is provided on one side of the first bushing, and the caliper is inserted into the pump shaft and is vertically located inside the pump body.

[0008] Preferably, a third sealing ring is provided at the connection between the pump body and the pump cover, and a fourth sealing ring is provided at the connection between the pump body and the pump base.

[0009] Preferably, a first fluid inlet and outlet are provided between the pump cover and the pump body, and the first fluid inlet and outlet are located on both sides of the top of the pump cover, and the first flow channel inlet and outlet are interconnected with the first flow channel.

[0010] Preferably, a second fluid inlet and outlet are provided between the pump base and the pump body, and the second fluid inlet and outlet are located at the front and rear ends of one side of the top of the pump body, and the second fluid inlet and outlet are interconnected with the second flow channel.

[0011] Preferably, a third sealing ring is provided at the connection between the pump body and the pump cover, and a fourth sealing ring is provided at the connection between the pump body and the pump base.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: When the fluid flows into the second cavity inside the pump body along the first flow channel, the fluid is guided to one or more blades on the impeller. When the impeller and blades rotate, the rotating blades force the fluid to move in the direction of rotation of the impeller, and the impeller at the same time generates a reaction force in the opposite direction of rotation, thereby generating a pressure difference inside the second cavity, causing the fluid to be lifted or transported along the first flow channel, thus realizing the lifting or transport of the fluid. When the pump shaft continuously drives the impeller to rotate, the pump shaft and the shaft seal mechanism will generate heat due to friction, resulting in a temperature rise. Excessive temperature will cause the performance of the shaft seal mechanism to degrade, accelerate aging, and even cause the shaft seal to fail. At this time, by continuously injecting cooling water into the second flow channel inside the pump body, the cooling water circulates along the second flow channel around the first cavity, thereby carrying away the heat of the shaft seal mechanism, reducing the working temperature of the shaft seal mechanism, reducing thermal expansion and thermal stress caused by temperature changes, and effectively controlling the temperature within a reasonable range, ensuring the sealing performance and service life of the shaft seal mechanism.

[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1A schematic diagram of a small vortex pump with a cooling water device;

[0016] Figure 2 Another structural schematic diagram of a small vortex pump with a cooling water device;

[0017] Figure 3 This is another structural schematic diagram of a small vortex pump with a cooling water device;

[0018] Figure 4 This is an exploded view of a small vortex pump with a cooling water system.

[0019] The following components are shown in the figure: 1. Motor, 2. Pump body, 3. Pump cover, 4. Pump base, 5. Impeller, 6. Pump shaft, 7. First shaft sleeve, 8. First sealing ring, 9. Second shaft sleeve, 10. Second sealing ring, 11. Caliper, 12. First fluid inlet / outlet, 13. Second fluid inlet / outlet, 14. First flow channel, 15. Second flow channel, 16. Third sealing ring, 17. Fourth sealing ring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4In this embodiment of the present invention, a small vortex pump with a cooling water device includes a motor 1 and a pump body 2 disposed on one side of the motor 1. The motor 1 drives a pump shaft 6 that rotates inside the pump body 2, and an impeller 5 is synchronously connected to the end of the pump shaft 6. The pump body 2 includes a pump seat 4 and a pump cover 3 that are respectively sealed and installed with it. The pump seat 4 is located on one side of the motor 1, and the pump cover 3 is located at the end of the pump shaft 6. The pump shaft 6 passes through the pump seat 4, and a shaft sealing mechanism and the pump shaft 6 are provided at the connection between the pump seat 4 and the pump shaft 6. The pump shaft rotates between the shaft sealing mechanism. The connection between the pump base 4 and the pump body 2 forms a first cavity (not shown in the figure) and a second flow channel 15 for circulating cooling water. The second flow channel 15 surrounds the outside of the first cavity. The pump shaft 6 rotates inside the first cavity, and the second flow channel 15 of the pump shaft 6 is not connected to the cavity. The connection between the pump cover 3 and the pump body 2 forms a second cavity (not shown in the figure) for placing the impeller 5 and a first flow channel 14 for the blades on the impeller 5 to move within the second cavity. Thus, when the fluid flows along... When the fluid flows into the second cavity inside the pump body 2 through the first flow channel 14, it is guided to one or more blades on the impeller 5. When the impeller 5 and the blades rotate, the rotating blades force the fluid to move in the direction of rotation of the impeller 5, and the impeller 5 at the same time generates a reaction force in the opposite direction of rotation. This creates a pressure difference inside the second cavity, causing the fluid to be lifted or transported along the first flow channel 14, thereby achieving the lifting or transport of the fluid. When the pump shaft 9 continuously drives the impeller 5 to rotate, heat is generated between the pump shaft 9 and the shaft seal mechanism due to friction, causing the temperature to rise. Excessive temperature will cause the performance of the shaft seal mechanism to degrade, accelerate aging, and even cause the shaft seal to fail. At this time, by continuously injecting cooling water into the second flow channel 15 inside the pump body 2, the cooling water circulates along the second flow channel 5 around the first cavity, thereby removing the heat from the shaft seal mechanism, reducing the working temperature of the shaft seal mechanism, reducing thermal expansion and thermal stress caused by temperature changes, and effectively controlling the temperature within a reasonable range to ensure the sealing performance and service life of the shaft seal mechanism.

[0022] The shaft sealing mechanism includes a second shaft sleeve 9 located in the middle of the pump base 4, a first shaft sleeve 7 located on one side of the second shaft sleeve 9 and rotating coaxially with the pump shaft 6, and the first shaft sleeve 7 located inside the first cavity. A second sealing ring 10 is provided between the second shaft sleeve 9 and the pump shaft 6, and a first sealing ring 8 is provided between the first shaft sleeve 7 and the pump shaft 6. Both the first sealing ring 8 and the second sealing ring 10 are high-temperature resistant O-rings. High-temperature resistant O-rings have a much greater performance advantage than gaskets in terms of longitudinal elasticity when the temperature changes. They can prevent leakage caused by the increase in longitudinal clearance of the friction pair due to the decrease in elasticity caused by cold contraction at low temperatures. It is worth noting that the first shaft sleeve 7 is tightly fitted with the pump shaft 6 through the first sealing ring 8. Regardless of temperature changes, the sealing elasticity at this point is not affected by the spring pressure. The second shaft sleeve 9 is tightly fitted with the pump base through the second sealing ring 10 and is affected by both longitudinal and radial pressure.

[0023] A caliper 11 is provided on one side of the first bushing 7, and the caliper 11 is inserted into the pump shaft 6. The caliper 11 is vertically located inside the pump body 2 and is a thin-plate caliper 11, which can prevent the failure of the fastening bolts due to thermal expansion and contraction of the pump shaft 6 caused by temperature changes.

[0024] A third sealing ring 16 is provided at the connection between the pump body 2 and the pump cover 3, and a fourth sealing ring 17 is provided at the connection between the pump body 2 and the pump base 4. Thus, the connection between the pump body 2 and the pump cover 3 and the pump base 4 can be kept sealed through the third sealing ring 16 and the fourth sealing ring 17.

[0025] A first fluid inlet / outlet 12 is provided between the pump cover 3 and the pump body 2, and the first fluid inlet / outlet 12 is located on both sides of the top of the pump cover 3. The first flow channel inlet / outlet 12 and the first flow channel 14 are interconnected, so that external fluid can enter the second cavity through the first fluid inlet / outlet 12. When the first fluid inlet / outlet 12 on one side of the top of the pump cover 3 is the fluid inlet, the fluid enters the second cavity through the inlet. During the rotation of the impeller 5 inside the second cavity, the fluid entering the second cavity moves together with it. At the same time, the impeller 5 generates a reaction force in the opposite direction of rotation, so that a pressure difference is generated inside the second cavity, thereby discharging the fluid from the first fluid inlet / outlet 12 on the other side of the top of the pump cover 3. This allows the coolant to repeatedly enter and exit the pump body 2 through the first fluid inlet / outlet 12, thereby lifting or transporting the fluid.

[0026] A second fluid inlet / outlet 13 is provided between the pump base 4 and the pump body 2. The second fluid inlet / outlet 13 is located at both ends of the top side of the pump body 2. The second fluid inlet / outlet 13 is interconnected with the second flow channel 15. Thus, external cooling environment water can enter the first cavity through the second fluid inlet / outlet 13 and flow along the second flow channel 15. When the second fluid inlet / outlet 13 at the front end of the top of the pump body 2 is the inlet for cooling environment water, the cooling environment water enters the first cavity through this inlet. As the external cooling environment water is continuously transported by the external conveying equipment, it flows along the second flow channel 15, thereby carrying away the heat of the shaft seal mechanism, reducing the working temperature of the shaft seal mechanism, reducing thermal expansion and thermal stress caused by temperature changes, and effectively controlling the temperature within a reasonable range to ensure the sealing performance and service life of the shaft seal mechanism.

[0027] A third sealing ring 16 is provided at the connection between the pump body 2 and the pump cover 3, and a fourth sealing ring 17 is provided at the connection between the pump body 2 and the pump base 4. The third sealing ring 16 and the fourth sealing ring 17 seal and fill the connection between the pump body 2 and the pump base 4 and the pump cover 3 respectively, thereby ensuring that the fluid entering the pump body 2 and the cooling environment water will not leak.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A small vortex pump with a cooling water device, characterized in that, The pump includes a motor and a pump body located on one side of the motor. The motor drives a pump shaft that rotates inside the pump body, and an impeller is synchronously connected to the end of the pump shaft. The pump body includes a pump seat and a pump cover that are respectively sealed and installed with the pump body. The pump seat is located on one side of the motor, and the pump cover is located at the end of the pump shaft. The pump shaft passes through the pump seat, and a shaft sealing mechanism is provided at the connection between the pump seat and the pump shaft. The pump shaft rotates between the shaft sealing mechanism. The connection between the pump seat and the pump body forms a first cavity and a second flow channel for circulating cooling water. The second flow channel surrounds the outside of the first cavity. The pump shaft rotates inside the first cavity, and the second flow channel of the pump shaft is not connected to the cavity. The connection between the pump cover and the pump body forms a second cavity for placing the impeller and a first flow channel for the blades on the impeller to move inside the second cavity.

2. The small vortex pump with cooling water device according to claim 1, characterized in that, The shaft sealing mechanism includes a second shaft sleeve disposed in the middle of the pump base, a first shaft sleeve located on one side of the second shaft sleeve and rotating coaxially with the pump shaft, and the first shaft sleeve located inside the first cavity. A second sealing ring is provided between the second shaft sleeve and the pump shaft, and a first sealing ring is provided between the first shaft sleeve and the pump shaft.

3. The small vortex pump with cooling water device according to claim 2, characterized in that, A caliper is provided on one side of the first bushing, and the caliper is inserted into the pump shaft and is vertically located inside the pump body.

4. The small vortex pump with cooling water device according to claim 1, characterized in that, A third sealing ring is provided at the connection between the pump body and the pump cover, and a fourth sealing ring is provided at the connection between the pump body and the pump base.

5. The small vortex pump with cooling water device according to claim 1, characterized in that, A first fluid inlet and outlet are provided between the pump cover and the pump body, and the first fluid inlet and outlet are located on both sides of the top of the pump cover, and the first flow channel inlet and outlet are interconnected with the first flow channel.

6. The small vortex pump with cooling water device according to claim 1, characterized in that, A second fluid inlet and outlet are provided between the pump base and the pump body, and the second fluid inlet and outlet are located at the front and rear ends of one side of the top of the pump body, and the second fluid inlet and outlet are interconnected with the second flow channel.

7. The small vortex pump with cooling water device according to claim 1, characterized in that, A third sealing ring is provided at the connection between the pump body and the pump cover, and a fourth sealing ring is provided at the connection between the pump body and the pump base.

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