Shaft sleeve and slag crusher

Abstract

The utility model relates to the technical field of mechanical sealing, and discloses a shaft sleeve and a slag crusher, the shaft sleeve comprises a sleeve and a sealing assembly, the sleeve is provided with a sealing end face, and at least one mounting groove far away from the sealing end face is formed in the inner wall of the sleeve; the sealing assembly comprises an end face sealing ring and at least one middle sealing ring, and the end face sealing ring is arranged on the inner wall of the sleeve and located on the sealing end face. And a middle sealing ring is arranged in each mounting groove. The end face sealing rings play a role in preliminarily sealing the shaft sleeve, and the middle sealing rings are not in contact with slag water due to the preliminary sealing effect of the end face sealing rings, so that the structure is complete; after the end face sealing rings are damaged due to corrosion of slag water, the middle sealing rings are complete in structure, and therefore the follow-up sealing effect on the shaft sleeve can be achieved, rapid corrosion and abrasion of the shaft body and the shaft sleeve are avoided, and the service life of the shaft body and the service life of the shaft sleeve are prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical seals, in particular to a shaft sleeve and a slag crusher. Background Art

[0002] Slag crusher is a mechanical device used to break, crush and decompose various raw materials or waste. Slag crusher is usually used in the fields of waste treatment, recycling, resource recovery, etc. It can effectively break down various solid and hard materials into smaller particles or fragments, which is convenient for subsequent treatment and recycling.

[0003] In the existing slag crusher technology, the sealing structure of the shaft sleeve mainly relies on the end sealing ring. During the operation of the equipment, this structural design often has certain shortcomings. Specifically, since the shaft sleeve is only equipped with a sealing ring at its end, the end sealing ring will be damaged due to corrosion by the chemical substances in the slag water. Once the end sealing ring is damaged, not only can the expected sealing effect not be achieved, but it will also cause rapid corrosion and wear of the shaft sleeve, seriously affecting the service life of the shaft sleeve. Utility Model Content

[0004] The main purpose of the utility model is to provide a shaft sleeve, aiming to prolong the service life of the shaft sleeve.

[0005] In order to achieve the above-mentioned purpose, the shaft sleeve proposed in the utility model is applied to a slag crusher, and the shaft sleeve comprises:

[0006] A sleeve, the sleeve having a sealing end surface, the inner wall of the sleeve being formed with at least one mounting groove away from the sealing end surface; and

[0007] A sealing assembly, comprising an end face sealing ring and at least one middle sealing ring, wherein the end face sealing ring is arranged on the inner wall of the sleeve and located at the sealing end face; and a middle sealing ring is arranged in each of the mounting grooves.

[0008] Optionally, the distance between each of the mounting grooves and the sealing end surface extending along the length direction of the sleeve is defined as L, 15 mm ≤ L ≤ 20 mm.

[0009] Optionally, the height of the mounting groove is defined as H1, the distance that each of the middle sealing rings extends along the height direction of the mounting groove is H2, and H2-H1≥0.5mm.

[0010] Optionally, the sealing assembly further comprises an end sealing ring, which is arranged on the inner wall of the sleeve and located at an end of the sleeve away from the sealing end face.

[0011] Optionally, the middle sealing ring includes a sealing ring and two sealing ribs spaced apart and formed on the outer peripheral wall of the sealing ring, and the two sealing ribs are arranged along the circumference of the sealing ring.

[0012] Optionally, the facing side and the opposite side of the two sealing ribs are both formed with inclined annular surfaces; the outer wall of one end of each sealing rib away from the sealing ring is formed with an arc surface, and each arc surface connects the two inclined annular surfaces of the sealing rib.

[0013] Optionally, the middle sealing ring is formed with a support bar, and the support bar connects two adjacent sealing ribs.

[0014] Optionally, the middle sealing ring further includes a plurality of elastic beads, and each of the elastic beads is respectively arranged in the two sealing ribs.

[0015] Optionally, the middle sealing ring is made of synthetic rubber.

[0016] The utility model also provides a slag crusher, which comprises:

[0017] A sleeve, the sleeve having a sealing end surface, the inner wall of the sleeve being formed with at least one mounting groove away from the sealing end surface; and

[0018] A sealing assembly, comprising an end face sealing ring and at least one middle sealing ring, wherein the end face sealing ring is arranged on the inner wall of the sleeve and located at the sealing end face; and a middle sealing ring is arranged in each of the mounting grooves.

[0019] In the technical solution of the utility model, the sleeve includes a sleeve and a sealing assembly, the sleeve has a sealing end face, and the inner wall of the sleeve is formed with at least one mounting groove away from the sealing end face; the sealing assembly includes an end face sealing ring and at least one middle sealing ring, the end face sealing ring is arranged on the inner wall of the sleeve and located at the sealing end face; a middle sealing ring is arranged in each mounting groove. In the technical solution of the utility model, the end face sealing ring plays a preliminary sealing role for the sleeve, and each middle sealing ring has a complete structure because it does not contact the slag water due to the preliminary sealing role of the end face sealing ring; after the end face sealing ring is corroded and damaged by the slag water, each middle sealing ring can play a subsequent sealing role for the sleeve due to its complete structure, thereby avoiding rapid corrosion and wear of the shaft body and the sleeve, and extending the service life of the shaft body and the sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0021] Figure 1 A schematic structural diagram of an embodiment of a shaft sleeve provided by the utility model;

[0022] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0023] Figure 3 It is a schematic diagram of the structure of the sealing ring in the shaft sleeve;

[0024] Figure 4 for Figure 3 Section view along BB.

[0025] Description of Figure Numbers:

[0026] Label name Label name 1000 Bushing 2211 Support bar 1 casing 222 Sealing rib 11 Sealing end face 2221 Tilted Torus 12 Mounting slot 2222 Curved 21 End seal ring 223 Elastic beads 22 Middle sealing ring 23 End seal 221 Sealing ring

[0027] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] 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 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.

[0029] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0031] Please refer to Figure 1 and Figure 2 In order to solve the problem that the service life of the shaft sleeve is shortened after the end sealing ring is damaged, the utility model proposes a shaft sleeve 1000, comprising:

[0032] The sleeve 1 and the sealing assembly, the sleeve 1 has a sealing end face 11, and the inner wall of the sleeve 1 is formed with at least one mounting groove 12 away from the sealing end face 11; the sealing assembly includes an end face sealing ring 21 and at least one middle sealing ring 22, the end face sealing ring 21 is arranged on the inner wall of the sleeve 1 and located at the sealing end face 11; a middle sealing ring 22 is arranged in each mounting groove 12.

[0033] In the technical solution of the present utility model, the end face sealing ring 21 plays a preliminary sealing role for the sleeve 1000, and each middle sealing ring 22 has a complete structure because it does not come into contact with the slag water due to the preliminary sealing effect of the end face sealing ring 21; after the end face sealing ring 21 is corroded and damaged by the slag water, each middle sealing ring 22 can play a subsequent sealing role for the sleeve 1000 due to its complete structure, thereby avoiding rapid corrosion and wear of the shaft body and the sleeve 1000, and extending the service life of the shaft body and the sleeve 1000.

[0034] In one embodiment, the inner wall of the sleeve 1 forms a mounting groove 12 , and the sealing assembly includes a middle sealing ring 22 .

[0035] If the installation groove 12 is too close to the sealing end face 11, the wear degree of the middle sealing ring 22 will be similar to that of the end face sealing ring 21. After the sealing of the end face sealing ring 21 fails, the sealing effect of the middle sealing ring 22 will also be poor. If the installation groove 12 is too far from the sealing end face 11, after the sealing of the end face sealing ring 21 fails, the sleeve 1000 will not be effectively sealed in the long distance between the middle sealing ring 22 and the end face sealing ring 21, so that the sleeve 1000 in this interval is worn and the service life of the sleeve 1000 is affected. The distance between each installation groove 12 and the sealing end face 11 along the length direction of the sleeve 1 is defined as L, 15mm≤L≤20mm. In one embodiment, L=18mm.

[0036] When the distance between the installation groove 12 and the sealing end face 11 is 18 mm, the middle sealing ring 22 can still maintain a good sealing effect after the sealing of the end face sealing ring 21 fails. At the same time, the shaft sleeve 1000 within the 18 mm interval between the middle sealing ring 22 and the end face sealing ring 21 cannot be effectively sealed, and the wear of the shaft sleeve 1000 in a small range will not affect the overall service life of the shaft sleeve 1000. Therefore, L=18 mm is preferred.

[0037] The height of the mounting groove 12 is defined as H1, and the distance that the middle sealing ring 22 extends along the height direction of the mounting groove 12 is defined as H2, and H2-H1≥0.5mm. In one embodiment, H2-H1=0.6mm. When the height difference between the middle sealing ring 22 and the mounting groove 12 is 0.5mm, it means that the height of the portion of the middle sealing ring 22 protruding from the mounting groove 12 is 0.6mm. The protruding portion of the middle sealing ring 22 at this height will neither affect the movement of the shaft body in the sleeve 1000 nor achieve a good sealing effect. Therefore, H2-H1=0.6mm is preferred.

[0038] In one embodiment, the sealing assembly further includes an end seal ring 23, which is disposed on the inner wall of the sleeve 1 and located at an end of the sleeve 1 away from the sealing end face 11. The end seal ring 23 can seal the end of the sleeve 1000 away from the sealing end face 11, thereby preventing slag water from entering the sleeve 1000 from the end of the sleeve 1000 away from the sealing end face 11 and wearing the sleeve 1000, further improving the service life of the sleeve 1000.

[0039] It can be understood that the cross-sectional shape of the middle sealing ring 22 can be, but is not limited to, a circle.

[0040] Please refer to Figure 3 and Figure 4In one embodiment, the middle sealing ring 22 includes a sealing ring 221 and two sealing ribs 222 formed at intervals on the outer peripheral wall of the sealing ring 221, and the two sealing ribs 222 are arranged along the circumference of the sealing ring 221. When the shaft body is inserted into the sleeve 1000, the top of the rear sealing rib 222 moves at the same time and maintains a certain distance from the top of the front sealing rib 222. The two sealing ribs 222 will not exert greater pressure on the shaft body due to mutual compression after contact, thereby affecting the movement of the shaft body in the sleeve 1000.

[0041] In one embodiment, the two sealing ribs 222 are formed with inclined annular surfaces 2221 on the sides facing each other and on the sides facing away from each other; the outer wall of one end of each sealing rib 222 away from the sealing ring 221 is formed with an arc surface 2222, and each arc surface 2222 connects the two inclined annular surfaces 2221 of the sealing rib 222. Such a configuration increases the distance between the ends of the two sealing ribs 222 away from the sealing ring 221, making it less likely that the two sealing ribs 222 will deform and abut against each other; at the same time, the end of the sealing rib 222 away from the sealing ring 221 is an arc surface 2222, which increases the contact area between the sealing rib 222 and the shaft body, and reduces the pressure of the sealing rib 222 squeezing the shaft body when the shaft body moves; thereby further reducing the possibility that the two sealing ribs 222 squeeze each other and affect the movement of the shaft body in the sleeve 1000.

[0042] In one embodiment, the middle sealing ring 22 is formed with a support strip 2211, which connects two adjacent sealing ribs 222. The support strip 2211 is used to support the two sealing ribs 222 to prevent the two sealing ribs 222 from deforming and abutting against each other to apply greater pressure to the shaft body and affect the movement of the shaft body.

[0043] In order to ensure the sealing effect of the two sealing ribs 222, the tops of the two sealing ribs 222 need to always remain in a state of being pressed against the shaft. To this end, the middle sealing ring 22 also includes a plurality of elastic beads 223. In one embodiment, the middle sealing ring 22 also includes twelve elastic beads 223, and the twelve elastic beads 223 are respectively arranged in the two sealing ribs 222. The twelve elastic beads 223 are divided into two groups, and the elastic beads 223 in the two groups are arranged in the two sealing ribs 222 in a ring-shaped manner. The elastic beads 223 can provide support for one end of the sealing rib 222 close to the arc surface 2222 to prevent it from being excessively deformed under the pressure of the shaft and causing the middle sealing ring 22 to lose its sealing effect.

[0044] It should be noted that the elastic bead 223 can be made of a plastic material with a relatively high hardness, or a metal material, and the present invention does not limit this. In one embodiment, the elastic bead 223 is made of a plastic material with a relatively high hardness. Since the elastic bead 223 is made of a plastic material, it has a certain deformation capacity. Under the pressure of the abutting structure, it is not easy to break due to its certain amount of deformation size. In addition, the plastic material is not easily corroded and has a certain durability.

[0045] It can be understood that the material of the middle sealing ring 22 can be rubber or silicone. In one embodiment, the material of the middle sealing ring 22 is synthetic rubber. Synthetic rubber has good wear resistance and corrosion resistance. The use of synthetic rubber as the material of the middle sealing ring 22 makes the wear speed of the middle sealing ring 22 slower, and the outer ring of the middle sealing ring 22 (the part close to the sealing end face 11) is more resistant to corrosion by slag water, so the service life of the middle sealing ring 22 is longer and the sealing effect is longer.

[0046] The utility model also proposes a slag crusher, which includes a shaft sleeve 1000. The specific structure of the shaft sleeve 1000 refers to the above embodiment. Since the slag crusher adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0047] In one embodiment, the slag crusher includes a shaft body and a sleeve 1000. The shaft body is inserted into the casing 1 and is sealed with the end face sealing ring 21 and the middle sealing ring 22 respectively to achieve multi-layer sealing of the sleeve 1000 and the shaft body, thereby extending the service life of the sleeve 1000 and the shaft body.

[0048] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A bushing (1000) used in a slag crusher, characterized in that: The shaft sleeve (1000) comprises: A sleeve (1), the sleeve (1) having a sealing end surface (11), the inner wall of the sleeve (1) being formed with at least one mounting groove (12) away from the sealing end surface (11); and A sealing assembly, comprising an end face sealing ring (21) and at least one middle sealing ring (22), wherein the end face sealing ring (21) is arranged on the inner wall of the sleeve (1) and is located at the sealing end face (11); and a middle sealing ring (22) is arranged in each of the mounting grooves (12).

2. The bushing (1000) according to claim 1, characterized in that: The distance between each installation groove (12) and the sealing end surface (11) extending along the length direction of the sleeve (1) is defined as L, 15 mm ≤ L ≤ 20 mm.

3. The bushing (1000) according to claim 1, characterized in that: The height of the installation groove (12) is defined as H1, and the distance that each of the middle sealing rings (22) extends along the height direction of the installation groove (12) is defined as H2, where H2-H1≥0.5 mm.

4. The bushing (1000) according to claim 1, characterized in that: The sealing assembly further comprises an end sealing ring (23), wherein the end sealing ring (23) is arranged on the inner wall of the sleeve (1) and is located at an end of the sleeve (1) away from the sealing end surface (11).

5. The bushing (1000) according to any one of claims 1 to 4, characterized in that: The middle sealing ring (22) comprises a sealing ring (221) and two sealing ribs (222) formed at intervals on the outer peripheral wall of the sealing ring (221), and the two sealing ribs (222) are arranged along the circumference of the sealing ring (221).

6. The bushing (1000) according to claim 5, characterized in that: The two sealing ribs (222) are both formed with inclined annular surfaces (2221) on the sides facing each other and on the sides facing each other; an outer wall of one end of each sealing rib (222) away from the sealing ring (221) is formed with an arc surface (2222), and each arc surface (2222) connects the two inclined annular surfaces (2221) of the sealing rib (222).

7. The bushing (1000) according to claim 6, characterized in that: The middle sealing ring (22) is formed with a support strip (2211), and the support strip (2211) connects two adjacent sealing ribs (222).

8. The bushing (1000) according to claim 5, characterized in that: The middle sealing ring (22) further comprises a plurality of elastic beads (223), and each of the elastic beads (223) is respectively arranged in the two sealing ribs (222).

9. The bushing (1000) according to any one of claims 1 to 4, characterized in that: The middle sealing ring (22) is made of synthetic rubber.

10. A slag crusher, characterized in that: The slag crusher comprises a shaft body and a shaft sleeve (1000) according to any one of claims 1 to 9, wherein the shaft body is inserted into the sleeve (1) and is sealingly abutted against the end face sealing ring (21) and the middle sealing ring (22) respectively.

Images