Bimetal cylinder sleeve with scratch-resistant inner wall

Abstract

The utility model discloses a bimetal cylinder sleeve with an anti-scratch inner wall, which comprises an outer sleeve and an inner cylinder barrel, the outer surface of the inner cylinder barrel is filled on the inner side surface of the outer sleeve, one end of the inner cylinder barrel is provided with an annular groove, the other end of the inner cylinder barrel is provided with a positioning groove, a convex locking ring is arranged between the outer sleeve and the inner cylinder barrel, and the convex locking ring is arranged in the annular groove. The outer surface of the convex locking ring is connected to the inner side surface of the outer sleeve through threads, the outer surface of the convex locking ring is clamped into the surface of the annular groove of the inner cylinder barrel, the convex locking ring is extruded on the outer surface of the elastic gasket, and the elastic gasket is connected to the surface of the annular groove of the inner cylinder barrel in a sleeving mode. A ring groove reserved space is formed outside, locking and fixing can be achieved through the convex locking ring, the installation assembly is simple, single-side installation can be achieved, the number of parts is small, and replacement is more convenient.

Description

Technical Field

[0001] The utility model relates to the field of a bimetallic cylinder sleeve with an inner wall that resists scratching, and more specifically, to a bimetallic cylinder sleeve with an inner wall that resists scratching. Background Art

[0002] The bimetallic cylinder liner is one of the commonly used cylinders in high-pressure mud pumps. The inner cylinder liner can be replaced separately after the inner wall of the cylinder liner is worn, which effectively saves costs. The utility model patent of its traditional structure CN202221089459.X discloses a bimetallic cylinder liner with a replaceable liner for a high-pressure mud pump. The bimetallic cylinder liner with a replaceable liner for a high-pressure mud pump is inserted into the slide groove on the surface of the outer metal cylinder liner through two protrusions on the outer side of the inner metal cylinder liner, which can prevent the inner metal cylinder liner from rotating during subsequent operation, thereby simplifying the installation steps. After the bimetallic cylinder liner with a replaceable liner for a high-pressure mud pump combines the inner and outer metal cylinder liners, the two cylinder liners can be fixed by using a ring to be inserted into the inside of the two notches to avoid lateral relative displacement. , installation is simpler and stability is higher. The bimetallic cylinder sleeve with replaceable lining for the high-pressure mud pump is provided with an ejection mechanism at the rear end. The ejection mechanism can increase the pressure of the sleeve ring to clamp the two cylinder sleeves, thereby increasing the connection stability. The inner metal cylinder sleeve can be directly ejected when it is taken out. According to the technical solution disclosed by the invention, when the existing bimetallic cylinder sleeve equipment is used, on the one hand, when the bimetallic cylinder sleeve is installed on the inner side of the mud pump, it is often fixed by bolts, which is easy to cause loose bolts during operation, resulting in loose installation, which is not conducive to the working safety of the packaging equipment. On the other hand, when the inner sleeve needs to be replaced, it is often necessary to completely dismantle the bimetallic cylinder sleeve as a whole, and then take out the inner sleeve for replacement, which is not conducive to improving the replacement efficiency of the inner sleeve.

[0003] The existing patent CN218624624U discloses a bimetallic cylinder sleeve, including a cylinder sleeve assembly, the cylinder sleeve assembly includes an outer sleeve and an inner sleeve, the outer sleeve is provided with a mounting position assembly, the mounting position assembly includes a bayonet and a clamping ring, an automatic clamping assembly is installed on the inner side of the bayonet, the automatic mounting assembly includes an upper clamping block and a lower clamping block, a pushing assembly is installed on the inner side of the outer sleeve, the pushing assembly includes a guide block group and a hexagonal screw, and a limiting assembly is installed on the inner side of the outer sleeve. The bimetallic cylinder sleeve can fix the bimetallic cylinder sleeve on the inner side of the mud pump to avoid looseness, ensure the firmness of the installation and fixation, and thus effectively ensure the working safety of the mud pump. When the inner sleeve needs to be replaced due to long-term wear, it is only necessary to remove the inner sleeve from the inner side of the outer sleeve without disassembling the outer sleeve, thereby reducing the disassembly and installation steps, and improving the replacement efficiency of the inner sleeve. The bimetallic cylinder sleeve is suitable for installation in a high-pressure mud pump.

[0004] A hexagonal screw mechanism is provided for installation and disassembly, and the installation assembly and parts are numerous, so the installation and replacement are inconvenient. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a bimetallic cylinder sleeve with an inner wall that is resistant to scratches. By adopting double sleeves that are mutually socketed and positioned, a ring groove is set on the outside to reserve space, and it can be locked and fixed by a convex locking ring. The installation assembly is simple, only one-side installation is required, there are fewer parts, and replacement is more convenient.

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] A bimetallic cylinder sleeve with an inner wall that resists scratches comprises an outer sleeve and an inner cylinder, the outer surface of the inner cylinder is filled on the inner surface of the outer sleeve, an annular groove is arranged at one end of the inner cylinder, and a positioning groove is arranged at the other end, a convex locking ring is arranged between the outer sleeve and the inner cylinder, the outer surface of the convex locking ring is connected to the inner surface of the outer sleeve by a thread, the outer surface of the convex locking ring is stuck in the surface of the annular groove of the inner cylinder, and the convex locking ring is squeezed on the outer surface of an elastic gasket, and the elastic gasket is sleeved on the surface of the annular groove of the inner cylinder, and double sleeves are sleeved and positioned with each other, an annular groove is arranged on the outside to reserve space, and the convex locking ring is used to lock and fix, the installation assembly is simple, and single-side installation is sufficient, with fewer parts and components, and more convenient replacement.

[0008] Furthermore, a positioning protrusion is provided on the inner surface of the tail end of the outer sleeve, and the positioning protrusion is inserted into the inner surface of the positioning groove of the inner cylinder.

[0009] Furthermore, the upper and lower groups of positioning protrusions are distributed on the inner surface of the outer sleeve, and the upper and lower groups of positioning grooves are distributed on the outer surface of the inner cylinder.

[0010] Furthermore, the convex locking ring adopts a convex ring structure, and an octagonal cutout is arranged on the outer end surface thereof.

[0011] Furthermore, the elastic gasket is made of elastic steel, and an inclined elastic protrusion is arranged on its surface.

[0012] Furthermore, the outer sleeve is made of medium carbon steel.

[0013] Furthermore, the inner cylinder is made of high carbon steel.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] By adopting double sleeves to be mutually socketed and positioned, an annular groove is set on the outside to reserve space, and it can be locked and fixed by a convex locking ring. The installation assembly is simple, and it can be installed on one side, with fewer parts and components, and replacement is more convenient.

[0016] The inner surface of the tail end of the outer sleeve is provided with a positioning protrusion, which is inserted into the inner surface of the positioning groove of the inner cylinder. When the inner cylinder is loaded into the outer sleeve, the positioning groove can be aligned with the positioning protrusion and inserted. After loading, it can be positioned without twisting and displacement.

[0017] The upper and lower groups of positioning protrusions are distributed on the inner surface of the outer sleeve, and the upper and lower positioning grooves are distributed on the outer surface of the inner cylinder, distributed on both sides, and can be pulled sideways for clamping, and the clamping is firm;

[0018] The convex locking ring adopts a convex ring structure, and an octagonal cutout is arranged on the outer end surface, so that the wrench can be clamped in the octagonal cutout and twisted, which is convenient for assembly and disassembly;

[0019] The elastic gasket is made of elastic steel, and its surface is provided with inclined elastic convex pieces, which are convenient for supporting the locking of the convex locking ring. When squeezed, the inclined elastic convex pieces are deformed and contracted, generating an outward squeezing force, which makes it difficult for the convex locking ring to loosen and slip, and the locking is firm and stable;

[0020] The outer sleeve is made of medium carbon steel, and the outer structure has strong toughness to avoid impact and cracking;

[0021] The inner cylinder is made of high carbon steel, and the inner cylinder structure has high hardness to avoid scratches on the inner wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a view of the inner cylinder of the utility model;

[0024] Figure 3 This is a view of the elastic gasket of the utility model;

[0025] Figure 4 It is a side view of the elastic gasket of the utility model;

[0026] Figure 5 It is a side view of the overall structure of the utility model.

[0027] Description of the numbers in the figure:

[0028] 1 outer sleeve, 2 inner cylinder, 20 ring groove, 3 convex locking ring, 4 elastic gasket, 5 positioning protrusion, 21 positioning groove, 40 inclined elastic protrusion. DETAILED DESCRIPTION

[0029] 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.

[0030] Example 1

[0031] See also Figure 1-5 A bimetallic cylinder sleeve with an anti-scratch inner wall comprises an outer sleeve 1 and an inner cylinder 2. The outer surface of the inner cylinder 2 is filled on the inner surface of the outer sleeve 1. An annular groove 20 is arranged at one end of the inner cylinder 2, and a positioning groove 21 is arranged at the other end. A convex locking ring 3 is arranged between the outer sleeve 1 and the inner cylinder 2. The outer surface of the convex locking ring 3 is connected to the inner surface of the outer sleeve 1 through a thread. The outer surface of the convex locking ring 3 is stuck in the surface of the annular groove 20 of the inner cylinder 2, and the convex locking ring 3 is squeezed on the outer surface of the elastic gasket 4. The elastic gasket 4 is sleeved on the surface of the annular groove 20 of the inner cylinder 2. By adopting double sleeves to be sleeved and positioned with each other, an annular groove 20 is arranged on the outside to reserve space, and it can be locked and fixed by the convex locking ring 3. The installation assembly is simple, and single-side installation is sufficient. There are fewer parts and components, and replacement is more convenient.

[0032] The inner surface of the rear end of the outer sleeve 1 is provided with a positioning protrusion 5, which is inserted into the inner surface of the positioning groove 21 of the inner cylinder 2. When the inner cylinder 2 is loaded into the outer sleeve 1, the positioning groove 21 can be aligned with the positioning protrusion 5 and inserted. After loading, it can be positioned without twisting and displacement.

[0033] The upper and lower groups of positioning protrusions 5 are arranged on the inner surface of the outer sleeve 1, and the upper and lower positioning grooves 21 are arranged on the outer surface of the inner cylinder 2, distributed on both sides, and can be pulled sideways for clamping, and the clamping is firm;

[0034] The convex locking ring 3 adopts a convex ring structure, and an octagonal cutout is provided on the outer end surface thereof, so that a wrench can be clamped in the octagonal cutout and twisted, which is convenient for assembly and disassembly;

[0035] The elastic gasket 4 is made of elastic steel, and an inclined elastic protrusion 40 is arranged on its surface to facilitate the support of the convex locking ring 3 for locking. When squeezed, the inclined elastic protrusion 40 deforms and contracts to generate an outward squeezing force, which makes it difficult for the convex locking ring 3 to loosen and slip, and the locking is firm and stable;

[0036] The outer sleeve 1 is made of medium carbon steel, and the outer structure has strong toughness to avoid impact and cracking;

[0037] The inner cylinder 2 is made of high carbon steel, and the inner cylinder structure has high hardness to avoid scratches on the inner wall;

[0038] When in use, the inner cylinder 2 is loaded into the outer sleeve 1. When the inner cylinder 2 is loaded into the outer sleeve 1, the positioning groove 21 can be aligned with the positioning protrusion 5 and inserted. After loading, it can be positioned without twisting and displacement. The elastic gasket 4 is sleeved on the outer surface of the annular groove 20 of the inner cylinder 2, and then the convex locking ring 3 is sleeved. The outer surface of the convex locking ring 3 is connected to the inner surface of the outer sleeve 1 through a thread, which can be locked and fixed. The convex locking ring 3 can squeeze the elastic gasket 4 to lock it, and the inner cylinder 2 can be locked and fixed. It is easy to install, with few parts and low cost. When disassembling, the wrench is stuck in the octagonal cutout at the outer end of the convex locking ring 3, and the convex locking ring 3 can be twisted to remove it. After disassembly, the inner cylinder 2 can be pulled out, and the disassembly is convenient and flexible.

[0039] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A bimetallic cylinder sleeve with a scratch-resistant inner wall, comprising an outer sleeve (1) and an inner cylinder (2), characterized in that: The outer surface of the inner cylinder (2) is filled on the inner surface of the outer cylinder (1); an annular groove (20) is provided at one end of the inner cylinder (2) and a positioning groove (21) is provided at the other end; a convex locking ring (3) is provided between the outer cylinder (1) and the inner cylinder (2); the outer surface of the convex locking ring (3) is connected to the inner surface of the outer cylinder (1) through a thread; the outer surface of the convex locking ring (3) is inserted into the surface of the annular groove (20) of the inner cylinder (2), and the convex locking ring (3) is pressed on the outer surface of the elastic gasket (4); and the elastic gasket (4) is sleeved on the surface of the annular groove (20) of the inner cylinder (2).

2. A bimetallic cylinder liner with scratch-resistant inner wall according to claim 1, characterized in that: A positioning protrusion (5) is provided on the inner surface of the rear end of the outer sleeve (1), and the positioning protrusion (5) is inserted into the inner surface of the positioning groove (21) of the inner cylinder (2).

3. A bimetallic cylinder liner with scratch-resistant inner wall according to claim 2, characterized in that: The positioning protrusions (5) are arranged in two groups, upper and lower, on the inner surface of the outer sleeve (1), and the positioning grooves (21) are arranged in two groups, upper and lower, on the outer surface of the inner cylinder (2).

4. The bimetallic cylinder liner with scratch-resistant inner wall according to claim 1, characterized in that: The convex locking ring (3) adopts a convex ring structure, and an octagonal cutout is arranged on the outer end surface thereof.

5. The bimetallic cylinder liner with scratch-resistant inner wall according to claim 1, characterized in that: The elastic gasket (4) is made of elastic steel and has inclined elastic protrusions (40) arranged on its surface.

6. The bimetallic cylinder liner with scratch-resistant inner wall according to claim 1, characterized in that: The outer sleeve (1) is made of medium carbon steel.

7. The bimetallic cylinder liner with scratch-resistant inner wall according to claim 1, characterized in that: The inner cylinder (2) is made of high carbon steel.

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