Corrosion-resistant rubber front sheath of slurry pump

Abstract

The utility model relates to the technical field of front sheaths, and provides a slurry pump corrosion-resistant rubber front sheath which comprises a sheath body, a corrosion-resistant lining is arranged on the sheath body, a plurality of connecting structures are arranged between the corrosion-resistant lining and the sheath body, each connecting structure comprises a fixing hole, a connecting hole and a connecting piece, the fixing holes and the connecting holes are coaxially arranged, and the connecting pieces are arranged in the connecting holes. The connecting piece is in threaded connection with the fixing hole and the connecting hole, the connecting hole penetrates through the sheath body, and the fixing hole is located in the end, close to the sheath body, of the corrosion-resistant lining. According to the technical scheme, the problem that the application range of the rubber front sheath is limited due to limited rubber chemical stability in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of front sheaths, and in particular to a corrosion-resistant rubber front sheath of a slurry pump. Background Art

[0002] The front sleeve of a slurry pump generally refers to a protective device installed at the front end of the slurry pump. However, since the front sleeve is in direct contact with solid particles, it will wear out due to contact with solid particles. Therefore, the front sleeve is usually a consumable part of the slurry pump and needs to be replaced regularly.

[0003] At present, in order to facilitate the replacement of the front sheath, the rubber front sheath, which is lighter than the metal front sheath, is gradually being promoted. However, the chemical stability of rubber is limited. When the slurry pump is running with certain chemical properties, corrosion or dissolution may occur, affecting the normal operation of the slurry pump, resulting in limited application of the rubber front sheath. Utility Model Content

[0004] The utility model provides a corrosion-resistant rubber front protective sleeve for a slurry pump, which solves the problem in the related art that the rubber front protective sleeve has a limited application range due to the limited chemical stability of the rubber.

[0005] The technical solution of the utility model is as follows:

[0006] A corrosion-resistant rubber front sleeve of a slurry pump comprises a sleeve body, a corrosion-resistant lining is arranged on the sleeve body, a plurality of connection structures are arranged between the corrosion-resistant lining and the sleeve body, the connection structures comprise a fixing hole, a connecting hole, and a connecting piece, the fixing hole and the connecting hole are coaxially arranged, the connecting piece is threadedly connected to the fixing hole and the connecting hole, the connecting hole passes through the sleeve body, and the fixing hole is located at one end of the corrosion-resistant lining close to the sleeve body.

[0007] Furthermore, the corrosion-resistant lining includes a discharge portion, an inlet portion, and a main body portion, wherein the main body portion is located between the discharge portion and the inlet portion, and the three portions are in contact with each other, and the discharge portion, the inlet portion, and the main body portion are provided with a plurality of fixing holes.

[0008] Furthermore, a plurality of first positioning structures are provided between the main body and the sheath body, wherein the first positioning structures include a positioning ring and a positioning groove, wherein the positioning ring is fixedly connected to the main body, and the positioning groove is provided at one end of the sheath body close to the main body.

[0009] Furthermore, a chimeric structure is provided between the discharge portion and the main body, and between the feed portion and the main body, and each of the chimeric structures includes an embedding block and a receiving groove, and each of the embedding blocks corresponds to each of the receiving grooves one by one.

[0010] Furthermore, a positioning plate is provided at one end of the feed portion away from the main body, a plurality of positioning posts are provided at one end of the positioning plate close to the main body, and a plurality of positioning holes corresponding to the positioning posts are provided on the sheath body.

[0011] Furthermore, a second positioning structure is provided between the discharge portion and the sleeve body, the second positioning structure includes a positioning slot and a positioning body, the positioning body is fixedly connected to the discharge portion and slidably connected in the positioning slot, and the positioning slot is opened at one end of the sleeve body close to the discharge portion.

[0012] Furthermore, the embedded block includes a sealing strip.

[0013] Furthermore, one end of the corrosion-resistant lining away from the sheath body is coated with a corrosion-resistant coating.

[0014] The working principle and beneficial effects of the utility model are:

[0015] 1. The sheath body in the utility model is provided with a corrosion-resistant lining, which replaces the contact between the sheath body and the fluid by the corrosion-resistant lining, thereby avoiding the contact between the rubber sheath body with limited chemical stability and the fluid, thereby avoiding the corrosion and dissolution of the sheath body and improving the service life of the sheath body.

[0016] 2. The sheath body and the corrosion-resistant lining in the utility model are detachably fixedly connected by threaded connection, which is convenient for replacing the corrosion-resistant lining when the corrosion-resistant lining is damaged, thereby avoiding the corrosion resistance of the utility model from being reduced due to the wear of the corrosion-resistant lining. At the same time, when the utility model needs to be repaired and maintained, only the corrosion-resistant lining needs to be replaced, thereby reducing the repair and replacement costs of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0018] Figure 1 It is a structural schematic diagram of this embodiment;

[0019] Figure 2 This is a schematic diagram of the structure of the corrosion-resistant lining and the sheath body in this embodiment;

[0020] Figure 3 for Figure 2 A cross-sectional view of

[0021] Figure 4 for Figure 3 A partial enlarged view of the middle part;

[0022] Figure 5 It is a schematic diagram of the cooperation between the discharge part and the main body in this embodiment;

[0023] Figure 6 for Figure 5 A partial enlarged view of point B in the middle.

[0024] In the figure:

[0025] 1. Sheath body; 2. Corrosion-resistant lining; 21. Discharge part; 22. Feed part; 221. Positioning plate; 23. Main body; 3. Connection structure; 31. Fixing hole; 32. Connection hole; 33. Connector; 4. First positioning structure; 41. Positioning ring; 42. Positioning groove; 5. Mosaic structure; 51. Embedded block; 52. Accommodating groove; 61. Positioning column; 62. Positioning hole; 7. Second positioning structure; 71. Positioning slide groove; 72. Positioning body; 8. Corrosion-resistant coating. DETAILED DESCRIPTION

[0026] The following will be combined with 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 of 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.

[0027] like Figure 1 to Figure 3 As shown, this embodiment proposes a corrosion-resistant rubber front sleeve of a slurry pump, which mainly includes a sleeve body 1, on which a corrosion-resistant lining 2 is provided, and the corrosion-resistant lining 2 is located on the inner side of the sleeve body 1, that is, the corrosion-resistant lining 2 replaces the inner side of the sleeve body 1 to contact the fluid, thereby avoiding the rubber sleeve body 1 with limited chemical stability from being corroded or dissolved due to contact with the fluid. At the same time, the corrosion-resistant lining 2 should preferably be composed of a metal material with high corrosion resistance such as chromium alloy to fully ensure the corrosion resistance of this embodiment.

[0028] However, the fluid often contains solid particles, and the corrosion-resistant lining 2 will be worn in the process of long-term continuous contact with these solid particles. Therefore, a number of connecting structures 3 are provided between the corrosion-resistant lining 2 and the jacket body 1 to facilitate the repair and replacement of the worn corrosion-resistant lining 2 and prevent the fluid from penetrating along the worn part of the corrosion-resistant lining 2 and corroding the jacket body 1, that is, the corrosion resistance of this embodiment is reduced; at the same time, when wear is found, it can be selected to only repair or replace the corrosion-resistant lining 2, thereby reducing the maintenance cost of this embodiment.

[0029] In addition, the end of the corrosion-resistant lining 2 away from the sheath body 1 is coated with a corrosion-resistant coating 8. The corrosion-resistant coating 8 in this embodiment is preferably a corrosion-resistant coating 8 with good wear resistance such as a polyurethane coating, which further improves the corrosion resistance of this embodiment and improves the wear resistance of this embodiment.

[0030] The connecting structure 3 includes a fixing hole 31, a connecting hole 32, and a connecting piece 33. The fixing hole 31 and the connecting hole 32 are coaxially arranged, and the connecting piece 33 is threadedly connected to the fixing hole 31 and the connecting hole 32. That is, the present embodiment realizes a detachable fixed connection between the corrosion-resistant lining 2 and the sheath body 1 by means of a threaded connection, which not only facilitates the disassembly and installation of the corrosion-resistant lining 2, but also ensures the stability of the connection between the two.

[0031] The connecting hole 32 passes through the sheath body 1, so that the connecting piece 33 can connect the fixing hole 31 and the connecting hole 32 at the same time. The fixing hole 31 is located at one end of the corrosion-resistant lining 2 close to the sheath body 1 and does not pass through the corrosion-resistant lining 2, so as to prevent the fluid from penetrating into the connecting structure 3 along the pores of the fixing hole 31 and causing corrosion to the connecting structure 3 and even the sheath body 1.

[0032] like Figure 2 As shown, the corrosion-resistant lining 2 in the present embodiment includes a discharge portion 21, an inlet portion 22, and a main body portion 23, that is, the corrosion-resistant lining 2 is designed in sections, which is convenient for replacing the corrosion-resistant lining 2 according to the worn parts, and further reduces the maintenance cost of the present embodiment; the main body portion 23 is located between the discharge portion 21 and the inlet portion 22, and the three are in contact with each other, so that these parts are closer together, which helps to ensure the corrosion resistance of the present embodiment, and a plurality of fixing holes 31 are provided on the discharge portion 21, the inlet portion 22, and the main body portion 23, which are convenient for separately fixing the discharge portion 21, the inlet portion 22, and the main body portion 23 through the connecting structure 3, so as to fix the corrosion-resistant lining 2 on the sheath body 1.

[0033] like Figure 3-4 As shown, a plurality of first positioning structures 4 are provided between the main body 23 and the sheath body 1 in the present embodiment to prevent the main body 23 from being offset during the process of installing the main body 23 on the sheath body 1, thereby affecting the installation speed of the main body 23; the first positioning structure 4 comprises a positioning ring 41 and a positioning groove 42, the positioning ring 41 is fixedly connected to the main body 23, the positioning groove 42 is provided at one end of the sheath body 1 close to the main body 23, that is, the main body 23 is quickly positioned by the mutual engagement of the positioning ring 41 and the positioning groove 42, thereby improving the positioning efficiency of the main body 23, and after being positioned by the first positioning structure 4, the main body 23 can be directly fixed by the connecting structure 3, thereby realizing the rapid installation of the main body 23.

[0034] like Figure 3 , Figure 5As shown, in this embodiment, a mosaic structure 5 is provided between the discharge portion 21 and the main body 23, and between the feed portion 22 and the main body 23. Each mosaic structure 5 includes an embedded block 51 and a receiving groove 52. Each embedded block 51 corresponds to each receiving groove 52 one by one, that is, the discharge portion 21, the feed portion 22, and the main body 23 increase the contact area with each other through the mosaic structure 5, make the abutment relationship with each other more firm, and reduce the corrosion risk caused by looseness.

[0035] At the same time, the embedded block 51 includes a sealing strip, or the embedded block 51 is mainly composed of a sealing strip, and the shape of the embedded block 51 should be different according to the different positions. For example, the embedded block 51 between the feed portion 22 and the main body 23 should be annular in accordance with the axial projection surface of the feed portion 22, and the embedded block 51 between the discharge portion 21 and the main body 23 should be arc-shaped in accordance with the axial projection surface of the discharge portion 21, so as to better fit and fix the feed portion 22 or the discharge portion 21; and because the embedded block 51 is mainly composed of a sealing strip, during the fitting process, the characteristics of the sealing strip can be used to fully ensure the sealing of the embedded connection between the discharge portion 21, the feed portion 22, and the main body 23, prevent fluid infiltration, and ensure the corrosion resistance of this embodiment. The sealing strip in this embodiment should be made of a material with good chemical corrosion resistance such as fluoroplastics to ensure the corrosion resistance of the sealing strip itself.

[0036] like Figures 1 to 3 As shown, the feed part 22 in this embodiment has an annular structure as a whole. Therefore, when the feed part 22 is placed in the sheath body 1, it is easy to rotate or deviate, which affects the normal installation rate of this embodiment. Therefore, the feed part 22 in this embodiment is provided with a positioning plate 221 at one end away from the main body 23, and a plurality of positioning posts 61 are provided at one end of the positioning plate 221 close to the main body 23. The sheath body 1 is provided with a plurality of positioning holes 62 corresponding to each positioning post 61. As long as one group of positioning posts 61 and positioning holes 62 are aligned, the remaining positioning posts 61 and positioning holes 62 can be automatically corrected, which is convenient for positioning the feed part 22. There are a plurality of positioning posts 61 and positioning holes 62, so that after positioning, the feed part 22 has multiple force points on the sheath body 1 to prevent the feed part 22 from directly breaking the positioning posts 61 when subjected to force, thereby ensuring the integrity of the overall structure of this embodiment.

[0037] At the same time, due to the presence of the interlocking structure 5, when the discharge portion 21 is positioned with the sheath body 1, if the first positioning structure 4 is still used, interference may occur, resulting in the discharge portion 21 being unable to be installed on the sheath body 1. Figure 5-6As shown, a second positioning structure 7 is provided between the discharge portion 21 and the jacket body 1 in this embodiment. Through the cooperation between the second positioning structure 7 and the interlocking structure 5 between the discharge portion 21 and the main body 23, the discharge portion 21 is positioned and the stability of the discharge portion 21 on the jacket body 1 and the main body 23 after positioning is ensured. Different from the first positioning structure 4, the second positioning structure 7 includes a positioning slide 71 and a positioning body 72. The positioning body 72 is fixedly connected to the discharge portion 21 and slidably connected to the positioning slide 71 to avoid interference caused by the interlocking structure 5 when the discharge portion 21 is positioned by the second positioning structure 7. The positioning slide 71 is provided at one end of the jacket body 1 close to the discharge portion 21, that is, the positioning body 72 is first embedded in the positioning slide 71 to constrain the movement of the feed portion 22 in the radial direction, and then the feed portion 22 is moved down to constrain the feed portion 22 again through the interlocking structure 5, and then the feed portion 22 is fixed by the connecting member 33.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A corrosion-resistant rubber front jacket of a slurry pump, comprising a jacket body (1), characterized in that: The sheath body (1) is provided with a corrosion-resistant lining (2), and a plurality of connection structures (3) are provided between the corrosion-resistant lining (2) and the sheath body (1). The connection structures (3) include a fixing hole (31), a connection hole (32), and a connection piece (33). The fixing hole (31) and the connection hole (32) are coaxially arranged, and the connection piece (33) is threadedly connected to the fixing hole (31) and the connection hole (32). The connection hole (32) passes through the sheath body (1), and the fixing hole (31) is located at one end of the corrosion-resistant lining (2) close to the sheath body (1).

2. The corrosion-resistant rubber front sheath of a slurry pump according to claim 1 is characterized in that: The corrosion-resistant lining (2) comprises a discharge portion (21), an inlet portion (22), and a main body portion (23); the main body portion (23) is located between the discharge portion (21) and the inlet portion (22), and the three portions are in contact with each other; and the discharge portion (21), the inlet portion (22), and the main body portion (23) are each provided with a plurality of fixing holes (31).

3. The corrosion-resistant rubber front sheath of a slurry pump according to claim 2 is characterized in that: A plurality of first positioning structures (4) are provided between the main body (23) and the sheath body (1), wherein the first positioning structures (4) include a positioning ring (41) and a positioning groove (42), wherein the positioning ring (41) is fixedly connected to the main body (23), and the positioning groove (42) is provided at one end of the sheath body (1) close to the main body (23).

4. The corrosion-resistant rubber front sheath of a slurry pump according to claim 3 is characterized in that: A chimeric structure (5) is provided between the discharge portion (21) and the main body (23), and between the feed portion (22) and the main body (23). Each of the chimeric structures (5) comprises an embedding block (51) and a receiving groove (52). Each of the embedding blocks (51) corresponds to each of the receiving grooves (52).

5. The corrosion-resistant rubber front sheath of a slurry pump according to claim 4 is characterized in that: A positioning plate (221) is provided at one end of the feed portion (22) away from the main body (23), a plurality of positioning posts (61) are provided at one end of the positioning plate (221) close to the main body (23), and a plurality of positioning holes (62) corresponding one to one with the positioning posts (61) are provided on the sheath body (1).

6. The corrosion-resistant rubber front sheath of a slurry pump according to claim 5, characterized in that: A second positioning structure (7) is provided between the discharge portion (21) and the sheath body (1), the second positioning structure (7) comprising a positioning slide groove (71) and a positioning body (72), the positioning body (72) being fixedly connected to the discharge portion (21) and slidably connected in the positioning slide groove (71), and the positioning slide groove (71) is provided at one end of the sheath body (1) close to the discharge portion (21).

7. The corrosion-resistant rubber front sheath of a slurry pump according to claim 6, characterized in that: The insert block (51) comprises a sealing strip.

8. The corrosion-resistant rubber front sheath of a slurry pump according to claim 1 or 7, characterized in that: One end of the corrosion-resistant lining (2) away from the jacket body (1) is coated with a corrosion-resistant coating (8).

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