Slurry pump

Abstract

The utility model belongs to the technical field of slurry pumps, and particularly relates to a slurry pump which comprises a base, a motor, a pump head, a water tank and a tubular heat exchanger, the motor and the pump head are respectively and fixedly connected with the base, and an output shaft of the motor is in driving connection with a rotor structure in the pump head through a coupler. The water tank is provided with a water outlet and a water return port, the tubular heat exchanger is communicated with the water return port of the water tank, and the water outlet of the water tank and the tubular heat exchanger are respectively communicated with the sealing chamber of the pump head through hoses. The water temperature is reduced, and the heat exchange effect of the mechanical seal is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of slurry pump technology, and specifically to a slurry pump. Background Technology

[0002] The mechanical seal is a core component of a slurry pump, requiring external water for cooling and lubrication. Most pumps use circulating water or a water tank. During high-power pump operation, the mechanical seal's friction surfaces generate heat. Insufficient natural heat dissipation from the top of the water tank causes the tank temperature to rise to 60°C, affecting the normal operation of the mechanical seal. In practical applications, increasing the water tank capacity does not yield ideal results. Utility Model Content

[0003] This utility model addresses the problems mentioned above by specifically designing a slurry pump that incorporates a shell-and-tube heat exchanger. After the return water flows through the shell-and-tube heat exchanger, it exchanges heat with the outside air through the tube walls, thereby reducing the water temperature and enhancing the heat exchange effect of the mechanical seal.

[0004] To achieve the above objectives, this utility model provides a slurry pump, including a base, a motor, and a pump head. The motor and the pump head are respectively fixedly connected to the base. The output shaft of the motor is driven to connect to the rotor structure in the pump head via a coupling. The slurry pump also includes a water tank and a shell-and-tube heat exchanger. The outer shell of the water tank is mounted on the pump head via a bracket. The water tank has an outlet and a return outlet. The shell-and-tube heat exchanger is connected to the return outlet of the water tank. Furthermore, the outlet of the water tank and the shell-and-tube heat exchanger are respectively connected to the sealing chamber of the pump head via flexible hoses.

[0005] Furthermore, the shell-and-tube heat exchanger includes an intermediate tube and a water distribution plate symmetrically arranged on both sides of the intermediate tube. The water distribution plate has a water collection cavity, and the intermediate tube is connected to the water collection cavity.

[0006] Furthermore, the water distribution plate includes a set of mirror-mounted and welded steel plates, the steel plates having grooves formed therein.

[0007] Preferably, the intermediate tubes are variable diameter corrugated tubes.

[0008] Furthermore, the water tank has an inlet that is connected to the outlet, and the inlet is hinged with a cover plate.

[0009] Furthermore, a level gauge is installed inside the water tank.

[0010] Furthermore, the bracket includes a base plate, a support column, and a top plate. The base plate is detachably connected to the base, the two ends of the support column are respectively fixedly connected to the base plate and the top plate, and the water tank is fixedly connected to the top plate.

[0011] Furthermore, the base is provided with a sliding groove, and a slider is fixedly connected to the base plate, the slider slidingly engaging with the sliding groove.

[0012] Furthermore, the support column includes a first sleeve, a second sleeve, and a screw and nut. The sidewalls of the first sleeve and the second sleeve are each provided with multiple sets of through holes. The second sleeve is inserted into the first sleeve. The screw is sequentially inserted into the first sleeve and the second sleeve. The nut is threadedly connected to the screw and pressed against the outside of the first sleeve.

[0013] Furthermore, the joint surface between the support column and the top plate is fixedly connected with reinforcing ribs.

[0014] In summary, this utility model has the following advantages and beneficial technical effects:

[0015] 1. This utility model adds a shell-and-tube heat exchanger below the water return port of the water tank. After the return water flows through the shell-and-tube heat exchanger, it exchanges heat with the outside air through the shell and tube walls, which reduces the water temperature, enhances the heat dissipation effect of the return water and the heat exchange effect of the mechanical seal, and ensures that the water temperature in the water tank will not rise continuously, so as to ensure the normal operation of the equipment.

[0016] 2. The design of shell and tube heat exchangers uses steel plates and rigid tubes as common production consumables. The material cost is low, and the processing and assembly principle is simple, making it easy for workers to master and operate. The corrugated structure of the corrugated tubes can increase the heat exchange area and enhance turbulence, thereby improving the heat exchange effect and efficiency of the heat exchanger.

[0017] 3. The level gauge is used to monitor the water level in the tank in real time to ensure that the sealing chamber receives sufficient cooling water, thereby providing lubrication and heat exchange for the mechanical seal and ensuring the normal operation of the slurry pump equipment.

[0018] 4. The telescopic design of the bracket allows for adjustment of the water tank's height according to different slurry pump head heights, enhancing operability. This design enables the bracket to adapt to pump heads of different heights, ensuring the water tank is installed in the appropriate position and avoiding operational inconvenience or equipment damage due to height mismatch. The reinforcing ribs improve the stability of the water tank support. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the installation of the shell-and-tube heat exchanger in this utility model;

[0022] Figure 3This is a schematic diagram of the structure of the shell-and-tube heat exchanger in this utility model;

[0023] Figure 4 This is a three-dimensional schematic diagram of the bracket in this utility model;

[0024] Figure 5 This is a front view schematic diagram of the bracket in this utility model.

[0025] The reference numerals in the attached figures are:

[0026] 1. Base; 2. Motor; 3. Pump head; 31. Sealing chamber; 4. Coupling;

[0027] 5. Bracket; 51. Base plate; 52. First sleeve; 53. Second sleeve; 54. Screws and nuts; 55. Top plate; 56. Reinforcing ribs;

[0028] 6. Water tank; 61. Water outlet; 62. Water return outlet; 63. Water inlet;

[0029] 7. Shell and tube heat exchanger; 71. Intermediate tubes; 72. Water distribution plate; 73. Water collection chamber; 8. Flexible hose. Detailed Implementation

[0030] The following is in conjunction with the appendix Figures 1-5 The present invention will be described in further detail as follows:

[0031] like Figures 1-2 As shown, this embodiment discloses a slurry pump, including a base 1, a motor 2, and a pump head 3. The motor 2 and the pump head 3 are respectively fixedly mounted on the base 1 by screws. The output shaft of the motor 2 is driven to connect to the rotor structure in the pump head 3 through a coupling 4. This embodiment also includes a water tank 6 and a shell-and-tube heat exchanger 7. The outer shell of the water tank 6 is supported above the pump head 3 by a bracket 5. The water tank 6 has an outlet 61 and a return water port 62. The shell-and-tube heat exchanger 7 is connected to the return water port 62 of the water tank 6. The outlet 61 of the water tank 6 and the inlet of the shell-and-tube heat exchanger 7 are respectively connected to the sealing chamber 31 in the pump head 3 through a hose 8.

[0032] like Figures 2-3 As shown, the shell-and-tube heat exchanger 7 includes a central tube array 71 arranged in a circular pattern, and water distribution plates 72 symmetrically welded to both ends of the central tube array 71. A water collection cavity 73 is provided in the middle of the water distribution plate 72, and the port of the central tube array 71 is connected to the water collection cavity 73. The water distribution plate 72 includes a set of mirror-arranged steel plates that are welded and fixed to each other. The steel plates have grooves, and the grooves of the set of steel plates are opposite to each other to form the water collection cavity 73. The central tube array 71 is a variable-diameter corrugated tube, which is not shown in the variable-diameter structure diagram.

[0033] like Figure 1 and Figure 4As shown, the top of the water tank 6 has an upper water inlet 63 that is connected to the water outlet 61, and a cover plate (not shown in the figure) is hinged at the upper water inlet 63; a pressure level gauge (not shown in the figure) is also installed inside the water tank 6; the bracket 5 includes a base plate 51, a support column and a top plate 55, the base plate 51 is detachably connected to the base 1, the base plate 51 and the top plate 55 are welded to both ends of the support column respectively, and the water tank 6 is fixedly installed on the top plate 55 by screws.

[0034] like Figures 4-5 As shown, the base 1 has a T-shaped groove, and the base plate 51 is cut into a slider that slides with the groove. The support column includes a first sleeve 52, a second sleeve 53, and a screw and nut 54. The side walls of the first sleeve 52 and the second sleeve 53 are provided with multiple sets of through holes. The second sleeve 53 is inserted into the first sleeve 52. The screw is inserted into the first sleeve 52 and the second sleeve 53 in sequence. The nut is threaded to the screw and pressed against the outside of the first sleeve 52. The second sleeve 53 in the support column has a reinforcing rib 56 welded to the mating surface between it and the top plate 55.

[0035] The working principle of the slurry pump of this utility model is as follows:

[0036] In use, the slurry pump is installed above the pump head 3 via the bracket 5 using a water tank 6. Two flexible hoses 8 at the bottom of the water tank 6 are connected to the sealing chamber 31. Under normal conditions, the water tank 6 is filled with water, and a level gauge monitors the water level to ensure the sealing chamber 31 is filled with cooling water, providing lubrication for the mechanical seal and removing heat generated by the friction pair. Water in the water tank 6 enters the mechanical seal cavity through the flexible hose 8 at the outlet 61 under gravity, absorbing heat from the friction surface of the mechanical seal. Under the centrifugal force generated by the pump head 3, the water circulates through the flexible hose 8 at the return outlet 62 to the water distribution plate 72 below the shell-and-tube heat exchanger 7. It then flows through the middle tubes 71 and is divided into multiple streams, exchanging heat with the outside air through the tube walls, thereby reducing the water temperature. Finally, the water flows through the upper water distribution plate 72 and merges back into the water tank 6.

[0037] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A slurry pump, comprising a base, a motor, and a pump head, wherein the motor and the pump head are respectively fixedly connected to the base, and the output shaft of the motor is driven to connect to a rotor structure in the pump head via a coupling, characterized in that: It also includes a water tank and a shell-and-tube heat exchanger. The outer shell of the water tank is mounted on the pump head by a bracket. The water tank has an outlet and a return outlet. The shell-and-tube heat exchanger is connected to the return outlet of the water tank. The outlet of the water tank and the shell-and-tube heat exchanger are respectively connected to the sealing chamber of the pump head through hoses.

2. A slurry pump according to claim 1, characterized in that: The shell-and-tube heat exchanger includes a middle tube and water distribution plates symmetrically arranged on both sides of the middle tube. The water distribution plates have water collection chambers, and the middle tubes are connected to the water collection chambers.

3. A slurry pump according to claim 2, characterized in that: The water distribution plate includes a set of mirror-shaped steel plates welded together, and the steel plates have grooves.

4. A slurry pump according to claim 2, characterized in that: The middle tube column is a variable diameter corrugated tube.

5. A slurry pump according to claim 1, characterized in that: The water tank has an inlet that is connected to the outlet, and the inlet is hinged with a cover plate.

6. A slurry pump according to claim 5, characterized in that: The water tank is equipped with a level gauge.

7. A slurry pump according to claim 1, characterized in that: The bracket includes a base plate, a support column, and a top plate. The base plate is detachably connected to the base, and the two ends of the support column are respectively fixedly connected to the base plate and the top plate. The water tank is fixedly connected to the top plate.

8. A slurry pump according to claim 7, characterized in that: The base has a sliding groove, and the base plate is fixedly connected to a slider, which slides in conjunction with the sliding groove.

9. A slurry pump according to claim 7, characterized in that: The support column includes a first sleeve, a second sleeve, a screw, and a nut. The side walls of the first sleeve and the second sleeve are each provided with multiple sets of through holes. The second sleeve is inserted into the first sleeve. The screw is inserted into the first sleeve and the second sleeve in sequence. The nut is threadedly connected to the screw and pressed against the outside of the first sleeve.

10. A slurry pump according to claim 7, characterized in that: The joint surface between the support column and the top plate is fixedly connected with reinforcing ribs.

Images