Slurry type magnetic drive pump
By introducing heat exchangers and wear-resistant lining plates into the magnetic pump, the equipment damage problem of traditional magnetic pumps when transporting solid-particle media is solved, stable operation and cooling and cooling are achieved, and the reliability of the magnetic pump is ensured. Run smoothly.
Patent Information
- Application Number
- CN202420980125.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-08
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-05-08
AI Technical Summary
When transporting solid-containing granular media, traditional magnetic pumps are prone to damage the isolation sleeve due to particulate matter, resulting in damage to the equipment and unable to operate stably.
A mud-type magnetic pump is designed, which uses a heat exchanger for cooling, and a wear-resistant lining plate is installed on the pump body and the pump cover. The impeller adopts an open structure, and the thrust plate and the intercepting bushing are used to prevent solid particles from entering, ensuring that Stable operation of rotor and bearing.
Effectively prevent the inner rotor and sliding bearing from contact with solid particles, ensure that the magnetic pump runs smoothly and reliably when transporting the solid-containing particle medium, and improves the stability of the equipment by cooling water.
Smart Images
Figure CN222185119U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of magnetic pumps, in particular to a mud type magnetic pump. Background Art
[0002] Traditional magnetic pumps are only suitable for conveying clean media, and centrifugal pumps are basically used to convey media containing solid particles. Since magnetic pumps use sliding bearings, the gap between them and the shaft sleeve is very small, basically a gap of several degrees; the gap between the isolation sleeve and the inner rotor is also basically between 1.5mm and 2mm. In addition, the wall thickness of the isolation sleeve is 1mm to 1.5mm. When encountering particulate matter, the inner rotor rotates at high speed, and the particulate matter can instantly scratch or even tear the isolation sleeve, causing a catastrophic accident; this patent is designed through structure to meet the working conditions of magnetic pumps conveying solid particles.
[0003] In order to solve the above problems, we propose a mud type magnetic pump. Utility Model Content
[0004] The purpose of the utility model is to provide a mud type magnetic pump to solve the problems raised in the above background technology.
[0005] To achieve the above object, the utility model provides the following technical solutions: a slurry type magnetic pump, the magnetic pump is externally connected to a heat exchanger; the heat exchanger is provided with a flushing liquid inlet, a flushing liquid outlet, a cooling water inlet and a cooling water outlet; the pump cover in the magnetic pump is provided with a pump cover inlet, a pump cover outlet and a liquid sealing port;
[0006] The flushing liquid inlet is connected to the pump cover outlet; the flushing liquid outlet is connected to the pump cover inlet; the cooling water inlet and the cooling water outlet are externally connected to a water supply device.
[0007] Preferably, the pump body and the pump cover in the magnetic pump are both provided with wear-resistant linings.
[0008] Preferably, the impeller in the magnetic pump is an open impeller.
[0009] Preferably, a thrust plate is provided at one end of the impeller.
[0010] Preferably, a shaft sleeve is provided on the end of the thrust plate away from the impeller; a gap is provided between the shaft sleeve and the pump cover; and a thread is provided on the pump shaft in the magnetic pump near the gap between the shaft sleeve and the pump cover.
[0011] Preferably, a shut-off bushing is provided on the thrust plate.
[0012] Preferably, the heat exchanger is connected to the magnetic pump via a fixing frame.
[0013] Compared with the prior art, the beneficial effect of the utility model is that the mud-type magnetic pump can exchange heat and cool down through a heat exchanger. The heat exchanger refluxes to cool the inner magnetic rotor, the outer magnetic rotor and the isolation sleeve, and the heat exchanger enters the cooling water through the cooling water inlet for cooling. The sealing port is externally connected to a pressurized cleaning medium for liquid sealing, and a pressure source is provided at the same time to ensure that the pressure at the rotor is always higher than the inlet pressure, and at the same time, the sliding bearing at the front end of the impeller is cooled to ensure the stable operation of the magnetic pump. The utility model provides a magnetic pump that can effectively prevent the inner rotor and the sliding bearing from contacting a medium containing solid particles, so that the magnetic pump can operate smoothly and reliably under the condition of conveying a medium containing solid particles. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the structure of the utility model;
[0015] Figure 2 for Figure 1 Schematic diagram of the cross section at point A.
[0016] In the figure: 1-heat exchanger, 11-flushing liquid inlet, 12-flushing liquid outlet, 13-cooling water inlet, 14-cooling water outlet, 2-pump cover, 21-pump cover inlet, 22-pump cover outlet, 23-liquid sealing port, 3-pump body, 4-wear-resistant lining, 5-impeller, 6-thrust plate, 7-shaft sleeve, 8-pump shaft, 9-shutoff bushing. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0018] See also Figure 1 , Figure 2 The utility model provides a technical solution: a slurry type magnetic pump, the magnetic pump is externally connected to a heat exchanger 1. The heat exchanger 1 is provided with a flushing liquid inlet 11, a flushing liquid outlet 12, a cooling water inlet 13 and a cooling water outlet 14. The pump cover 2 in the magnetic pump is provided with a pump cover inlet 21, a pump cover outlet 22 and a liquid sealing port 23.
[0019] The flushing liquid inlet 11 is connected to the pump cover outlet 22. The flushing liquid outlet 12 is connected to the pump cover inlet 21. The cooling water inlet 13 and the cooling water outlet 14 are externally connected to a water supply device.
[0020] The sealing liquid port 23 is connected to a pressurized clean cleaning medium to provide a liquid seal, and the pressure is 2 kgf higher than the inlet pressure.
[0021] Furthermore, the pump body 3 and the pump cover 2 in the magnetic pump are both provided with a wear-resistant lining plate 4. Since the pump body 4 and the pump cover 2 convey solid particles, it is necessary to consider the abrasion of the medium. Therefore, the pump body 4 and the pump cover 2 are both designed with the wear-resistant lining plate 4.
[0022] Furthermore, the impeller 5 in the magnetic pump adopts an open impeller to prevent solid particles from blocking the flow channel of the impeller 5.
[0023] Furthermore, a thrust plate 6 is provided at one end of the impeller 5 .
[0024] Furthermore, a shaft sleeve 7 is provided on the end of the thrust plate 6 away from the impeller 5. A gap is provided between the shaft sleeve 7 and the pump cover 2. A thread is provided on the pump shaft 8 in the magnetic pump near the gap between the shaft sleeve 7 and the pump cover 2. There is a gap between the rear end of the shaft sleeve 7 and the pump cover 2, and the outer circle of the pump shaft 8 at the gap is threaded to play a role in reverse pumping. The magnetic pump provides resistance when it is running to prevent materials from entering the inner rotor.
[0025] Furthermore, a cut-off bushing 9 is provided on the thrust plate 6 to prevent the solid particles of the tank pump from entering the rotor cavity.
[0026] Furthermore, the heat exchanger 1 is connected to the magnetic pump via a fixing frame.
[0027] Working principle:
[0028] Due to the presence of the isolation sleeve, the magnetic pump starts to operate. The inner magnetic rotor and the outer magnetic rotor cut the magnetic lines of force to generate eddy heat, which is exchanged and cooled through the heat exchanger 1. The heat exchanger 1 refluxes and cools the inner magnetic rotor, the outer magnetic rotor and the isolation sleeve, and the heat exchanger 1 is cooled by cooling water entering through the cooling water inlet 13. The sealing port 23 is externally connected to a pressurized cleaning medium for liquid sealing, and at the same time provides a pressure source to ensure that the pressure at the rotor is always higher than the inlet pressure, and at the same time cools the sliding bearing at the front end of the impeller 5 to ensure the stable operation of the magnetic pump.
[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
[0030] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A slurry type magnetic pump, characterized in that: The magnetic pump is externally connected to a heat exchanger (1); the heat exchanger (1) is provided with a flushing liquid inlet (11), a flushing liquid outlet (12), a cooling water inlet (13) and a cooling water outlet (14); the pump cover (2) in the magnetic pump is provided with a pump cover inlet (21), a pump cover outlet (22) and a liquid sealing port (23); The flushing liquid inlet (11) is connected to the pump cover outlet (22); the flushing liquid outlet (12) is connected to the pump cover inlet (21); and the cooling water inlet (13) and the cooling water outlet (14) are connected to an external water supply device.
2. A slurry type magnetic pump according to claim 1, characterized in that: The pump body (3) and the pump cover (2) in the magnetic pump are both provided with a wear-resistant lining plate (4).
3. A slurry type magnetic pump according to claim 1, characterized in that: The impeller (5) in the magnetic pump adopts an open impeller.
4. A slurry type magnetic pump according to claim 3, characterized in that: A thrust plate (6) is provided at one end of the impeller (5).
5. A slurry type magnetic pump according to claim 4, characterized in that: A shaft sleeve (7) is provided on the end of the thrust plate (6) away from the impeller (5); a gap is provided between the shaft sleeve (7) and the pump cover (2); and a thread is provided on the pump shaft (8) in the magnetic pump near the gap between the shaft sleeve (7) and the pump cover (2).
6. A slurry type magnetic pump according to claim 4, characterized in that: The thrust plate (6) is provided with a shutoff bushing (9).
7. A slurry type magnetic pump according to claim 1, characterized in that: The heat exchanger (1) is connected to the magnetic pump via a fixing frame.