A pump housing structure of a slurry pump

Abstract

This utility model discloses a pump casing structure for a slurry pump, comprising two opposing main bodies forming the volute structure. Multiple arc-shaped protective plates are fixedly spaced at wear-prone areas on the inner wall of each volute. Each protective plate has a connecting groove on its top sides, spaced apart, that matches the inner wall of the volute. A locating pin is threaded into this groove. A mounting groove is formed on one edge of each volute, and a sealing strip is fixedly installed within this groove. The advantages of this device are that by providing replaceable protective plates at wear-prone areas of the volute, it effectively protects the inner wall of the pump casing, extending the equipment's service life. The protective plates are fixed by locating pins and can be replaced individually after wear, reducing maintenance costs and improving operational convenience. H-shaped sealing strips are embedded around the circumference of both sides of the volute, forming a double-sealing structure to ensure reliable sealing during fluid transport and prevent leakage.

Description

Technical Field

[0001] This utility model relates to the field of slurry pumps, and in particular to a pump casing structure for a slurry pump. Background Technology

[0002] A slurry pump is a fluid device used to transport media containing solid particles or slurry. It is widely used in industries such as mining, metallurgy, power, chemical and environmental protection. Its main function is to discharge slag-containing liquid under high pressure through the rotation of the impeller, thereby realizing the circulation and transportation of the medium.

[0003] Most existing slurry pump casings are integrally cast structures. When the inner wall is partially worn, the entire casing often needs to be replaced or repaired by welding, which is a complicated and costly maintenance process. Utility Model Content

[0004] The main objective of this invention is to propose a pump casing structure for a slurry pump, aiming to solve the problems mentioned in the background art.

[0005] To address the aforementioned problems, this utility model proposes a pump casing structure for a slurry pump, comprising two opposing main bodies forming the volute structure. Multiple arc-shaped protective plates are fixedly spaced at wear-prone areas on the inner wall of each volute. Each protective plate has a connecting groove at intervals on both sides of its top edge, consistent with the inner wall of the volute. A positioning pin is threaded into this connecting groove. An installation groove is provided on one side edge of each volute, and a sealing strip is fixedly installed within the installation groove.

[0006] In one embodiment, the sealing strip is "H" shaped, with one edge being half the length of the other side. The shorter side is fixedly fitted into the mounting groove, and the middle part is attached to both sides of the protective plate on both sides of the inner wall of the volute. The top of the longer side is attached to one side of the protective plate and the edge of the inner wall of the volute.

[0007] In one embodiment, a connecting flange is fixedly provided on the opposite edge of the outer wall of each of the volutes.

[0008] In one embodiment, an impeller is rotatably disposed at the center of the inner wall of one of the volutes, and a connection port is fixedly disposed at the center of the outer wall of the other volute.

[0009] In one embodiment, the widest points of two opposing volute bodies on one side combine to form an outlet.

[0010] In one embodiment, a drive motor is provided on one side of the volute, and the output end of the drive motor passes through the volute on that side and extends to the inner wall, and is fixedly connected to the middle of the impeller.

[0011] In one embodiment, a support frame is fixedly provided on the bottom surface of the drive motor.

[0012] Beneficial effects:

[0013] 1. This device effectively protects the inner wall of the pump casing from high-speed slurry flushing by installing replaceable protective plates on easily worn parts of the volute casing. This significantly extends the service life of the pump casing and reduces maintenance costs. When the protective plates are worn, only the positioning pins on both sides of the protective plates need to be removed to replace the severely worn protective plates individually. There is no need to repair or replace the entire pump casing. The operation is simple and the maintenance is efficient.

[0014] 2. The connection part of the volute of this device is equipped with an "H"-shaped sealing strip. The sealing strip forms a double sealing structure by being embedded in the mounting grooves on both sides of the inner wall of the volute and the top surface of the inner wall. This can effectively prevent slurry leakage and improve the sealing performance and operational stability of the equipment. Attached Figure Description

[0015] 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.

[0016] Figure 1 This is a schematic diagram of the main axial structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the exploded structure of the volute of this utility model;

[0018] Figure 3 This is a schematic diagram of the axial structure of the sealing strip of this utility model;

[0019] Figure 4 This is the utility model Figure 2 Enlarged structural diagram at point B;

[0020] Figure 5 This is the utility model Figure 2 Enlarged structural diagram at point A.

[0021] The annotations in the attached figures are explained as follows:

[0022] 1. Volute; 2. Connection port; 3. Outlet; 4. Connection flange; 5. Drive motor; 6. Support frame; 7. Impeller; 8. Protective plate; 9. Sealing strip; 10. Mounting groove; 11. Positioning pin. Detailed Implementation

[0023] 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.

[0024] To achieve the above-mentioned utility model objectives, such as Figure 1-5 As shown, this utility model provides a pump casing structure for a slurry pump, including two main bodies arranged opposite to each other to form a volute 1 structure. Multiple arc-shaped protective plates 8 are fixedly spaced at wear-prone parts of the inner wall of each volute 1. Each protective plate 8 has a connecting groove at intervals on both sides of its top, consistent with the inner wall of the volute 1. A positioning pin 11 is threaded into the connecting groove. An installation groove 10 is opened on one side edge of each volute 1, and a sealing strip 9 is fixedly installed in the installation groove 10. The sealing strip 9 is "H"-shaped, with one side edge being half the length of the other side. The shorter side is fixedly fitted into the installation groove 10, and its middle part is attached to both sides of the protective plates 8 on the inner wall of the volute 1. The top of the longer side is attached to one side of the protective plate 8 and the edge of the inner wall of the volute 1. A connecting flange 4 is fixedly installed on opposite sides of the outer wall of each volute 1.

[0025] Specifically, the volute 1 is the main structure of this utility model, and a fluid channel is formed inside for collecting and guiding the slurry. It is the pressure-bearing structure foundation of the entire pump casing. The two volutes 1 are arranged opposite to each other and are fixedly connected to each other through the connecting flanges 4 at both ends of the outer wall to form a closed cavity, ensuring the continuity and sealing of the slurry flow.

[0026] Multiple arc-shaped protective plates 8 are fixedly installed on the wear-prone parts of the inner wall of the volute 1. Each protective plate 8 matches the curved structure of the volute 1 and is used to resist the scouring and wear of the slurry when it flows at high speed, thereby extending the service life of the volute 1. Each protective plate 8 has a connecting groove on both sides, and a positioning pin 11 is threaded in the connecting groove. The positioning pin 11 can firmly fix the protective plate 8 to the inner wall of the volute 1. At the same time, after the protective plate 8 is worn, it can be quickly removed and replaced by disassembling the positioning pin 11, which is convenient for maintenance.

[0027] Each volute 1 has an installation groove 10 on its edge. An "H"-shaped sealing strip 9 is fixedly installed in the installation groove 10. The short side of the sealing strip 9 is embedded in the installation groove 10 to form a positioning, and the long side is in contact with the inner wall edge of the adjacent volute 1 and the protective plate 8 to form a double sealing structure, which effectively prevents the leakage of slurry at the joint of the pump casing.

[0028] To achieve the above-mentioned utility model objectives, such as Figure 1-2As shown, this utility model provides a pump casing structure for a slurry pump. An impeller 7 is rotatably mounted on the center of the inner wall of one volute 1, and a connection port 2 is fixedly mounted on the center of the outer wall of the other volute 1. The widest points on one side of the two opposing volute 1 bodies combine to form an outlet 3. A drive motor 5 is mounted on one side of the volute 1, and the output end of the drive motor 5 passes through the volute 1 on that side and extends to the inner wall, and is fixedly connected to the middle of the impeller 7. A support frame 6 is fixedly mounted on the bottom surface of the drive motor 5.

[0029] Specifically, the volute 1 is the main load-bearing and flow-guiding component of the slurry pump. Two volutes 1 are arranged opposite each other and together form the outlet 3 at their widest points, allowing the slurry to be smoothly discharged under the drive of the impeller 7. The streamlined structure of the volute 1 can effectively guide the flow direction of the slurry, reduce fluid resistance and improve conveying efficiency. An impeller 7 is rotatably arranged in the center of the inner wall of one of the volutes 1. The impeller 7 is the core component of the slurry pump and is responsible for converting mechanical energy into fluid kinetic energy. When the drive motor 5 is started, its output end passes through the outer wall of the volute 1 and is fixedly connected to the middle of the impeller 7, driving the impeller 7 to rotate at high speed, thereby generating centrifugal force on the slurry, causing the slurry to be thrown from the center of the impeller 7 to the inner wall of the volute 1 and finally discharged through the outlet 3.

[0030] Another volute 1 has a connection port 2 fixedly installed at the center of its outer wall for connecting to the slurry inlet pipe to achieve slurry intake. When the impeller 7 rotates, a negative pressure is formed in the central area, and the slurry is drawn into the volute 1 through the connection port 2.

[0031] The drive motor 5 is located on one side of the volute 1 and is the core component that provides driving force. Its output shaft is connected to the impeller 7 through a sealing structure to ensure power transmission while preventing slurry leakage. In order to ensure the stability of the drive motor 5 under high load operation, a support frame 6 is fixedly installed on its bottom surface. The support frame 6 is connected to the installation foundation and is used to bear the weight of the motor and absorb vibration during operation, so as to ensure the structural stability and reliability of the entire device in long-term operation.

[0032] The specific working process of this device;

[0033] Driven by the transmission motor 5, the impeller 7 rotates, forming a high-speed rotating airflow inside the volute 1. The airflow draws liquid in through the connection port 2, gradually accelerates along the curved guide structure inside the volute 1, and discharges it from the outlet 3 along its inner wall, achieving effective fluid transport. During the fluid movement, the liquid frequently comes into contact with the inner wall of the volute 1, which can easily cause wear. Therefore, a removable protective plate 8 is installed at the wear-prone parts of the volute 1. The protective plate 8 is fixed to the inner wall of the volute 1 by the positioning pin 11. When the protective plate 8 is severely worn, it can be replaced by simply pulling out the positioning pin 11, improving maintenance efficiency and reducing costs. In addition, to ensure the sealing performance during long-term operation, H-shaped sealing strips 9 are embedded on both sides of the inner wall of the volute 1, forming a double sealing structure, which effectively prevents leakage during fluid flow and ensures the stability and reliability of the system operation.

[0034] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A pump casing structure for a slurry pump, comprising two opposing main bodies forming a volute (1) structure, characterized in that, Each of the volutes (1) has multiple arc-shaped protective plates (8) fixedly spaced at the wear-prone parts of its inner wall. Each protective plate (8) has a connecting groove at intervals on both sides of its top, which is consistent with the inner wall of the volute (1). A positioning pin (11) is threaded into the connecting groove. Each of the volutes (1) has an installation groove (10) on one side edge, and a sealing strip (9) is fixedly installed in the installation groove (10).

2. The pump casing structure of a slurry pump as described in claim 1, characterized in that, The sealing strip (9) is "H" shaped, with one side edge being half the length of the other side. The shorter side is fixedly fitted into the mounting groove (10), and the middle part is attached to both sides of the protective plate (8) on both sides of the inner wall of the volute (1). The top of the longer side is attached to one side of the protective plate (8) and the edge of the inner wall of the volute (1).

3. The pump casing structure of a slurry pump as described in claim 2, characterized in that, Each of the volutes (1) has a connecting flange (4) fixedly installed on one side edge of its outer wall.

4. The pump casing structure of a slurry pump as described in claim 3, characterized in that, An impeller (7) is rotatably provided at the center of the inner wall of one of the volutes (1), and a connection port (2) is fixedly provided at the center of the outer wall of the other volute (1).

5. The pump casing structure of a slurry pump as described in claim 4, characterized in that, The two volutes (1) arranged opposite each other combine at the widest point on one side of the main body to form an outlet (3).

6. The pump casing structure of a slurry pump as described in claim 5, characterized in that, A drive motor (5) is provided on one side of the volute (1). The output end of the drive motor (5) passes through the volute (1) on that side and extends to the inner wall, and is fixedly connected to the middle of the impeller (7).

7. The pump casing structure of a slurry pump as described in claim 6, characterized in that, A support frame (6) is fixedly installed on the bottom surface of the drive motor (5).

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