Wear-resistant slurry pump shell

Abstract

The utility model discloses a wear-resistant slurry pump shell, which belongs to the technical field of slurry pumps, aims to prolong the service life of the slurry pump and reduce the maintenance cost of equipment, and adopts the technical scheme that the pump shell comprises a shell body and an outlet pipeline, the top of the shell is provided with a child-mother opening matched with a bottom connector of a slurry pump body and is fixedly connected with the slurry pump body through a plurality of fixing seats around the child-mother opening, the bottom of the shell is provided with a feeding port, and the lower end of the feeding port is provided with an inlet flange matched with a filter cage; the inlet end of the outlet pipeline is connected with an outlet in the side portion of the shell, and the outlet end of the outlet pipeline is connected with the conveying pipeline through an outlet flange. According to the slurry pump, the inlet flange capable of being provided with the filter cage is arranged at the feeding hole in the bottom of the shell, and when a solid-liquid mixed medium contains large-volume sundries, the filter cage is used for preventing large-block substances from entering the pump shell, so that the abrasion of the impeller and the pump shell can be effectively reduced, the service life of the slurry pump is prolonged, and the maintenance cost of equipment is reduced.

Description

Technical Field

[0001] The utility model relates to a wear-resistant slurry pump casing, which can prolong the service life of the slurry pump and reduce the equipment maintenance cost, and belongs to the technical field of slurry pumps. Background Art

[0002] Vertical slurry pumps have the characteristics of stable and reliable operation, large conveying volume, and the ability to convey coarse particles of solid-liquid mixed media, and are widely used in many production companies. However, there are the following problems in actual use:

[0003] 1. When some large-volume debris is sucked into the pump casing feed port, it will cause accelerated wear of the pump casing and impeller, affecting the service life of the slurry pump.

[0004] 2. The length of the axial pipeline at the pump casing outlet is too short, causing the solid-liquid mixed medium to wear the conveying pipeline after passing through the pump casing outlet pipeline, resulting in a short service life of the conveying pipeline, requiring frequent replacement, and increasing the maintenance cost of the equipment.

[0005] 3. The pump casing outlet flange and the outlet pipe are cast as one piece. When replacing the slurry pump, the bolt holes of the new pump casing outlet flange and the delivery pipe flange are often not concentric. The delivery pipe flange needs to be cut off and re-aligned and welded, which increases the maintenance cost and the labor intensity of the maintenance personnel.

[0006] Therefore, it is very necessary to improve the existing slurry pump casing. Utility Model Content

[0007] The utility model aims to provide a wear-resistant slurry pump casing to address the drawbacks of the prior art, so as to extend the service life of the slurry pump and reduce the equipment maintenance cost.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A wear-resistant slurry pump casing comprises a casing and an outlet pipe, wherein the top of the casing is provided with a male-female joint matching the bottom interface of the slurry pump body and is fixedly connected to the slurry pump body through a plurality of fixing seats around the male-female joint, a feed port is provided at the bottom of the casing, and an inlet flange matching the filter cage is provided at the lower end of the feed port; the inlet end of the outlet pipe is connected to the outlet on the side of the casing, and the outlet end of the outlet pipe is connected to the delivery pipe through the outlet flange.

[0010] The above-mentioned wear-resistant slurry pump casing, the outlet pipe is an L-shaped pipe, the inlet end is a horizontal pipe, and the outlet end is a vertical pipe. The horizontal pipe at the inlet end is connected to the outlet on the side of the shell and is tangent to the shell, the lower end of the vertical pipe at the outlet end is connected to the horizontal pipe, and the upper end is connected to the delivery pipe through the outlet flange.

[0011] The above-mentioned wear-resistant slurry pump casing, the length of the vertical pipe at the outlet end of the outlet pipe is greater than twice the diameter of the outlet pipe.

[0012] The above-mentioned wear-resistant slurry pump casing, the outer wall of the upper end of the vertical pipe at the outlet end of the outlet pipe is provided with an annular boss, the outlet flange is in the shape of a circular ring and is slidably mounted on the outside of the vertical pipe at the outlet end of the outlet pipe, and the inner diameter of the outlet flange is smaller than the outer diameter of the annular boss.

[0013] The above-mentioned wear-resistant slurry pump casing, the fixing seat is connected to the slurry pump body through fastening bolts, and a U-shaped bolt groove with an opening facing outwards and matching with the fastening bolts is provided on the fixing seat.

[0014] The wear-resistant slurry pump casing has three fixing seats which are evenly distributed around the male and female ports.

[0015] The wear-resistant slurry pump casing has a sealing ring at the male and female joints at the top of the casing.

[0016] The above-mentioned wear-resistant slurry pump casing, the outlet pipe and the casing are cast in one piece using the same material.

[0017] The utility model provides an inlet flange for installing a filter cage at the feed inlet at the bottom of the shell. When the solid-liquid mixed medium contains large-volume debris, the filter cage is used to prevent large pieces of material from entering the pump shell, which can effectively reduce the wear of the impeller and the pump shell, extend the service life of the slurry pump, and reduce the equipment maintenance cost.

[0018] The utility model increases the length of the vertical pipe at the outlet end of the outlet pipe, so that the solid-liquid mixed medium flows smoothly after entering the delivery pipe, reduces the impact and wear on the delivery pipe, increases the service life of the delivery pipe, and reduces the cost of equipment use. The outlet flange and the outlet pipe adopt a split structure, and the angle of the outlet flange can be easily adjusted when the pump casing is replaced, reducing the difficulty of connecting the outlet flange and the delivery pipe flange. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Figure 1 It is an axonometric drawing of the utility model;

[0021] Figure 2 It is a top view of the utility model;

[0022] Figure 3 It is the front view of the utility model.

[0023] The numbers in the figure are as follows: 1. Feed inlet; 2. Fixed seat; 3. Sealing ring; 4. Outlet pipe; 5. Outlet flange; 6. Male and female joint; 7. Annular boss; 8. Shell; 9. U-bolt groove; 10. Inlet flange. DETAILED DESCRIPTION

[0024] The utility model provides a wear-resistant slurry pump casing for the problems existing in the prior art, which solves the problems that the pump casing and the impeller are easily worn when the vertical slurry pump sucks in large objects, the delivery pipeline connected to the outlet pipeline is easily worn, and the bolt holes of the pump casing outlet flange and the delivery pipeline flange are not concentric when the vertical pump is replaced.

[0025] See also Figure 1-Figure 3 The utility model mainly includes a shell 8 and an outlet pipe 4. The top of the shell 8 is matched with the bottom interface of the slurry pump body through a male-female port 6. A sealing ring 3 is provided on the male-female port 6. A plurality of fixing seats 2 are welded around the male-female port 6. The fixing seats 2 are connected to the slurry pump body through fastening bolts, thereby squeezing the sealing ring 3, causing the sealing ring 3 to deform and play a sealing role. The sealing ring 3 is an O-type rubber sealing ring.

[0026] Three fixing seats 2 are provided, which are evenly distributed around the male and female openings 6 (distributed at 120 degrees), and each fixing seat 2 is provided with a U-shaped bolt groove 9 with an opening facing outwards. This type of opening type fixing seat facilitates the rapid insertion of fastening bolts.

[0027] A feed port 1 is provided at the bottom of the shell 8, and an inlet flange 10 is provided at the lower end of the feed port 1. A filter cage can be installed as needed to filter out large pieces of matter in the solid-liquid mixed medium to prevent the large pieces of matter from being sucked into the shell and wearing the impeller and the shell, thereby increasing the service life of the shell and the impeller.

[0028] The outlet pipe 4 is an L-shaped pipe, the inlet end of which is a horizontal pipe and the outlet end is a vertical pipe. The horizontal pipe at the inlet end is connected to the outlet on the side of the shell 8 and is tangent to the shell 8. The length of the vertical pipe at the outlet end is greater than twice the diameter of the outlet pipe 4. The material inside the shell 8 is thrown out through the outlet pipe 4 by the centrifugal force of the impeller, and enters the conveying pipe after passing through the thickened and lengthened outlet pipe 4, which can effectively reduce the wear of the material on the conveying pipe.

[0029] The outlet end of the outlet pipe 4 is connected to the conveying pipe through the outlet flange 5. The outlet flange 5 is located at the upper end of the vertical pipe at the outlet end. The outlet flange 5 and the outlet pipe 4 are a split structure, that is, the outer wall of the outlet end of the outlet pipe 4 is provided with an annular boss 7. The outlet flange 5 is in the shape of a circular ring, and its inner diameter is larger than the outer diameter of the outlet pipe 5 and smaller than the outer diameter of the annular boss 7. The outlet flange 5 is slidably mounted on the outside of the outlet pipe 4 and can be moved and rotated on the outlet pipe 4, so as to be conveniently connected to the flange at the end of the conveying pipe.

[0030] The outlet pipe 4 and the housing 8 are integrally cast with the same material.

[0031] When the slurry pump is working, the impeller rotates at high speed in the shell 8, and the solid-liquid mixed medium in the shell 8 enters the outlet pipe 4 under the action of centrifugal force, and is then transported to the next process through the conveying pipe connected to the outlet flange 5. At this time, negative pressure is formed in the shell 8 due to the discharge of the medium, and the solid-liquid mixed medium is automatically sucked into the shell 8 through the feed port 1, forming a working cycle.

[0032] Due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0033] By setting the inlet flange 10 on the feed port 1, a filter cage can be installed as needed to effectively filter large pieces of matter in the solid-liquid mixed medium, prevent them from entering the housing 8 to aggravate the wear of the impeller and the housing 8, and increase the service life of the pump housing.

[0034] By redesigning the outlet pipe 4, the vertical pipe at the outlet end is thickened and lengthened, so that the solid-liquid mixed medium can flow smoothly after entering the conveying pipe (carbon steel material), reducing the impact on the conveying pipe and effectively improving the service life of the conveying pipe.

[0035] The utility model changes the outlet flange 5 into a split movable flange, and the angle of the outlet flange 5 can be conveniently adjusted when replacing the slurry pump, thereby solving the problem of the outlet flange 5 being out of center with the bolt holes of the delivery pipeline flange, effectively reducing the construction difficulty and workload.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wear-resistant slurry pump casing, characterized in that: The invention comprises a shell (8) and an outlet pipe (4); the top of the shell (8) is provided with a male-female port (6) matching the bottom interface of the slurry pump body and is fixedly connected to the slurry pump body via a plurality of fixing seats (2) around the male-female port (6); the bottom of the shell (8) is provided with a feed port (1); the lower end of the feed port (1) is provided with an inlet flange (10) matching the filter cage; the inlet end of the outlet pipe (4) is connected to the outlet on the side of the shell (8), and the outlet end of the outlet pipe (4) is connected to the conveying pipe via the outlet flange (5).

2. The wear-resistant slurry pump casing according to claim 1 is characterized in that: The outlet pipe (4) is an L-shaped pipe, the inlet end of which is a horizontal pipe and the outlet end is a vertical pipe. The horizontal pipe at the inlet end is connected to the outlet on the side of the shell (8) and is tangent to the shell (8). The lower end of the vertical pipe at the outlet end is connected to the horizontal pipe, and the upper end is connected to the conveying pipe through the outlet flange (5).

3. The wear-resistant slurry pump casing according to claim 2 is characterized in that: The length of the vertical pipe at the outlet end of the outlet pipe (4) is greater than twice the diameter of the outlet pipe (4).

4. The wear-resistant slurry pump casing according to claim 3 is characterized in that: An annular boss (7) is provided on the outer wall of the upper end of the vertical pipe at the outlet end of the outlet pipe (4); the outlet flange (5) is in the shape of an annular ring and is slidably mounted on the outside of the vertical pipe at the outlet end of the outlet pipe (4); the inner diameter of the outlet flange (5) is smaller than the outer diameter of the annular boss (7).

5. The wear-resistant slurry pump casing according to claim 4 is characterized in that: The fixing seat (2) is connected to the pump body of the slurry pump via fastening bolts, and a U-shaped bolt groove (9) with an opening facing outwards and matching the fastening bolts is provided on the fixing seat (2).

6. The wear-resistant slurry pump casing according to claim 5 is characterized in that: Three fixing seats (2) are provided, and they are evenly distributed around the male and female openings (6).

7. The wear-resistant slurry pump casing according to claim 6 is characterized in that: The male and female joint (6) at the top of the housing (8) is provided with a sealing ring (3).

8. The wear-resistant slurry pump casing according to claim 7 is characterized in that: The outlet pipe (4) and the housing (8) are integrally cast from the same material.

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