Mechanical shaft seal structure

Abstract

The utility model discloses a mechanical shaft seal structure which comprises a shaft body, a sealing assembly is installed on the outer wall of the shaft body, an opening and closing assembly is installed on the outer wall of the sealing assembly, and a bundling hoop assembly is installed on the outer wall of the opening and closing assembly. According to the mechanical shaft seal structure, the fastening bolt is dismounted from the inner wall of the handle, the movable clamping block is taken out from the inner wall of the clamping groove, and the rear semicircular cylinder and the front semicircular cylinder are rotated to be separated in sequence through the electric screwdriver, after the rear semicircular cylinder and the front semicircular cylinder are separated, the sealing block can be moved to be separated from the mounting groove, and the front semicircular cylinder drives the rotating shaft to rotate in the inner wall of the containing groove; when the sealing ring in the shaft seal structure needs to be overhauled or replaced, the whole disassembly and assembly process is simple, convenient and rapid, a large number of parts do not need to be disassembled, and the maintenance cost is reduced. Meanwhile, after installation is completed, the overall sealing performance is high, and good structural stability is achieved.

Description

Technical Field

[0001] This utility model relates to the field of shaft seal structure technology, specifically a mechanical shaft seal structure. Background Technology

[0002] A shaft seal is a friction seal or stuffing box used to prevent liquid leakage between the shaft and bearing of a compressor or other fluid transport equipment. It is also a sealing device installed to prevent leakage between the pump shaft and the housing. Common types of shaft seals include packing seals, mechanical seals, and dynamic seals. Reciprocating pumps typically use packing seals. When transporting media where leakage is not permissible, diaphragm reciprocating pumps can be used. Rotary pumps (including vane pumps, rotor pumps, etc.) mainly use packing seals, mechanical seals, and dynamic seals.

[0003] Regarding the aforementioned technologies, the pump shaft is one of the core components of the pump. Its main function is to transmit the power of the motor to the pump impeller or other rotating parts, thereby generating liquid or water flow. The pump shaft is sealed by a shaft seal structure. Traditional shaft seal structures are mostly annular, and when they wear out or need maintenance, a large number of parts need to be removed, which is time-consuming, labor-intensive, and inconvenient to use.

[0004] Therefore, this utility model provides a mechanical shaft seal structure to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a mechanical shaft seal structure that solves the aforementioned problems.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a mechanical shaft seal structure, including a shaft body, a sealing component installed on the outer wall of the shaft body, an opening and closing component installed on the outer wall of the sealing component, and a binding assembly installed on the outer wall of the opening and closing component;

[0007] The sealing assembly includes a sealing ring that fits against the outer wall of the shaft. A mounting groove is provided at the rear left side of the sealing ring. A sealing adhesive layer is fitted to the inner wall of the mounting groove, and a sealing block is attached to the inner wall of the sealing adhesive layer.

[0008] The opening and closing assembly includes a front semi-cylinder and a rear semi-cylinder. The right side wall of the rear semi-cylinder has a receiving groove. The right end of the front semi-cylinder is rotatably connected to the inner wall of the receiving groove via a rotating shaft. The top and bottom walls on the left side of both the front and rear semi-cylinders have slots. The same card block is installed on the inner wall of the slots on the same side.

[0009] The binding assembly includes several semi-circular positioning rings. The outer walls of the front and rear semi-cylinders are evenly provided with semi-circular positioning grooves that match the semi-circular positioning rings. The outer walls of the several semi-circular positioning rings are rotatably installed in the inner walls of the corresponding semi-circular positioning grooves via rotating shafts. The front walls of the several semi-circular positioning rings are recessed and provided with handles.

[0010] The above technical solution allows for quick and easy maintenance of the sealing rings. The overall disassembly and assembly process is simple and quick, without the need to remove a large number of parts.

[0011] Furthermore, the outer wall of the sealing ring is fixedly connected to the inner wall of the opening and closing assembly, the sealing ring is circular and open, and the sealing block is fixedly connected to the left front end of the sealing ring.

[0012] With the above technical solution, the sealing ring will open when the opening and closing component is opened.

[0013] Furthermore, the left rear end of the sealing ring is fitted to the left front end, and a protective film is adhered to the surface of the sealing adhesive layer.

[0014] Through the above technical solution, the sealing ring is formed by the mutual adhesion of the sealing adhesive layer and the sealing block.

[0015] Furthermore, the front and rear semi-cylinders are arranged symmetrically front to back, and the inner walls of both the front and rear semi-cylinders are fixedly connected to the outer wall of the sealing ring. The left walls of the front and rear semi-cylinders are attached to each other on adjacent sides.

[0016] Through the above technical solution, the front half-cylinder and the rear half-cylinder cooperate to form a complete circle.

[0017] Furthermore, the semicircular positioning rings are evenly distributed vertically, and the number of semicircular positioning rings is the same as the number of semicircular positioning grooves.

[0018] Through the above technical solution, the semi-circular positioning ring enters the corresponding semi-circular positioning groove and is fixed in place.

[0019] Furthermore, the outer walls of several of the semicircular positioning rings are all fitted to the inner walls of the corresponding semicircular positioning grooves.

[0020] Through the above technical solution, the semi-circular positioning ring enters the corresponding semi-circular positioning groove and fits in place, thereby completing the connection between the front and rear semi-cylinders.

[0021] Furthermore, each of the handles has a fastening bolt screwed into its inner wall, and each of the fastening bolts is screwed through the corresponding handle and screwed into the outer wall of the front semi-cylinder for fixation.

[0022] Using the above technical solution, the fastening bolts are screwed into the front half-cylinder for fixation.

[0023] Beneficial effects

[0024] This invention provides a mechanical shaft seal structure. Compared with the prior art, it has the following advantages:

[0025] (1) In this mechanical shaft seal structure, the fastening bolts are removed from the inner wall of the handle by an electric screwdriver in sequence, and the handle is moved to drive the corresponding semi-circular positioning ring to rotate and disengage from the inner wall of the semi-circular positioning groove. The movable block is taken out from the inner wall of the slot. The rear half cylinder and the front half cylinder are rotated to separate them. When the rear half cylinder and the front half cylinder are separated, the sealing block will be separated from the sealing rubber layer. The front half cylinder drives the rotating shaft to rotate in the inner wall of the receiving groove, thereby opening the sealing ring and disengaging it from the shaft body. The sealing ring can be replaced or normal maintenance can be performed. When the sealing ring in the shaft seal structure needs to be repaired or replaced, the overall disassembly and assembly process is simple and quick, without the need to remove a large number of parts. At the same time, after installation, the overall sealing performance is strong and the structure has good stability. Attached Figure Description

[0026] Figure 1 This is a front view of the external structure of this utility model;

[0027] Figure 2 This is an exploded view of the internal structure of the opening and closing component of this utility model;

[0028] Figure 3 This is a utility model Figure 2 Enlarged view of the structure at point A;

[0029] Figure 4 This is a rear exploded view of the internal structure of the opening / closing component and the clamping component of this utility model;

[0030] Figure 5 This is a front exploded view of the internal structure of the opening / closing component and the clamping component of this utility model.

[0031] In the diagram: 1. Shaft; 2. Opening / closing assembly; 21. Rear semi-cylinder; 22. Front semi-cylinder; 23. Slot; 24. Block; 25. Receiving groove; 26. Rotating shaft; 3. Sealing assembly; 31. Sealing ring; 32. Mounting groove; 33. Sealing adhesive layer; 34. Sealing block; 4. Binding assembly; 41. Semi-circular positioning ring; 42. Semi-circular positioning groove; 43. Rotating shaft; 44. Fastening bolt; 45. Handle. Detailed Implementation

[0032] 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.

[0033] Example 1:

[0034] Please see Figure 1-5 A mechanical shaft seal structure includes a shaft body 1, a sealing assembly 3 installed on the outer wall of the shaft body 1, an opening and closing assembly 2 installed on the outer wall of the sealing assembly 3, and a binding assembly 4 installed on the outer wall of the opening and closing assembly 2.

[0035] The sealing assembly 3 includes a sealing ring 31, which is attached to the outer wall of the shaft 1. A mounting groove 32 is provided at the rear left side of the sealing ring 31. A sealing adhesive layer 33 is attached to the inner wall of the mounting groove 32, and a sealing block 34 is attached to the inner wall of the sealing adhesive layer 33.

[0036] The opening and closing assembly 2 includes a front semi-cylinder 22 and a rear semi-cylinder 21. A receiving groove 25 is provided on the right side wall of the rear semi-cylinder 21. The right end of the front semi-cylinder 22 is rotatably connected to the inner wall of the receiving groove 25 through a rotating shaft 26. The top and bottom walls on the left side of the front semi-cylinder 22 and the rear semi-cylinder 21 are both provided with slots 23. The same card block 24 is installed in the inner wall of the slots 23 on the same side.

[0037] The binding assembly 4 includes several semi-circular positioning rings 41. The outer walls of the front semi-cylinder 22 and the rear semi-cylinder 21 are evenly provided with semi-circular positioning grooves 42 that match the semi-circular positioning rings 41. The outer walls of the several semi-circular positioning rings 41 are rotatably installed in the inner walls of the corresponding semi-circular positioning grooves 42 through the rotating shaft 43. The front walls of the several semi-circular positioning rings 41 are recessed and provided with handles 45.

[0038] In this embodiment of the utility model, the purpose of this arrangement is that, through the cooperation of the sealing component 3, the opening and closing component 2 and the clamping component 4, when the sealing ring 31 needs to be inspected or replaced, the disassembly and assembly work can be completed quickly. The overall disassembly and assembly process is simple and does not require the removal of a large number of parts. After the fixing is completed, it has good sealing performance and structural stability.

[0039] Example 2:

[0040] Please see Figure 1-5This embodiment provides a technical solution based on embodiment one: the outer wall of the sealing ring 31 is fixedly connected to the inner wall of the opening and closing component 2. The sealing ring 31 is circular and open. The sealing block 34 is fixedly connected to the left front end of the sealing ring 31. The left rear end of the sealing ring 31 is attached to the left front end. A protective film is pasted on the surface of the sealing adhesive layer 33. The front half cylinder 22 and the rear half cylinder 21 are symmetrically arranged front and back. The inner walls of the front half cylinder 22 and the rear half cylinder 21 are fixedly connected to the outer wall of the sealing ring 31. The adjacent sides of the left walls of the front half cylinder 22 and the rear half cylinder 21 are attached. Several semi-circular positioning rings 41 are evenly distributed up and down. The number of semi-circular positioning rings 41 is the same as the number of semi-circular positioning grooves 42. The outer walls of several semi-circular positioning rings 41 are attached to the inner walls of the corresponding semi-circular positioning grooves 42. Several handles 45 are screwed with fastening bolts 44 on their inner walls. Several fastening bolts 44 are screwed through the corresponding handles 45 and screwed to the outer wall of the front half cylinder 22.

[0041] In this embodiment of the utility model, the purpose of this arrangement is that the sealing ring 31 is circular and open, and the sealing ring 31 is connected and sealed by the cooperation of the sealing adhesive layer 33 and the sealing block 34. At the same time, the semi-circular positioning ring 41 is attached to the inner wall of the corresponding semi-circular positioning groove 42 and fixed by the fastening bolt 44, thereby limiting and fixing the closing of the front semi-cylinder 22 and the rear semi-cylinder 21. After closing and forming, it has good structural stability.

[0042] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0043] During operation, when the sealing ring 31 needs to be replaced or normal maintenance is required, the fastening bolts 44 are removed from the inner wall of the handle 45 in sequence using an electric screwdriver. The handle 45 is then moved to drive the corresponding semi-circular positioning ring 41 to rotate and disengage from the rotating shaft 43 in the inner wall of the semi-circular positioning groove 42. The movable locking block 24 is then removed from the inner wall of the locking groove 23. The rear semi-cylinder 21 and the front semi-cylinder 22 are then rotated to separate them. When the rear semi-cylinder 21 and the front semi-cylinder 22 are separated, the sealing block 34 will be separated from the sealing adhesive layer 33. The front semi-cylinder 22 will drive the rotating shaft 26 to rotate in the inner wall of the receiving groove 25, thereby opening the sealing ring 31 and disengaging it from the shaft 1. The sealing ring 31 can then be replaced or normal maintenance can be performed.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mechanical shaft seal structure, comprising a shaft body (1), characterized in that: A sealing assembly (3) is installed on the outer wall of the shaft (1), an opening and closing assembly (2) is installed on the outer wall of the sealing assembly (3), and a binding assembly (4) is installed on the outer wall of the opening and closing assembly (2). The sealing assembly (3) includes a sealing ring (31), which is attached to the outer wall of the shaft (1). The sealing ring (31) has an installation groove (32) at the rear left side. A sealing adhesive layer (33) is attached to the inner wall of the installation groove (32), and a sealing block (34) is attached to the inner wall of the sealing adhesive layer (33). The opening and closing assembly (2) includes a front semi-cylinder (22) and a rear semi-cylinder (21). The rear semi-cylinder (21) has a receiving groove (25) on its right side wall. The right end of the front semi-cylinder (22) is rotatably connected to the inner wall of the receiving groove (25) via a pivot (26). The top and bottom walls on the left side of both the front semi-cylinder (22) and the rear semi-cylinder (21) have slots (23). The inner walls of the slots (23) on the same side are fitted with the same locking block (24). The binding assembly (4) includes several semi-circular positioning rings (41). The outer walls of the front semi-cylinder (22) and the rear semi-cylinder (21) are evenly provided with semi-circular positioning grooves (42) that match the semi-circular positioning rings (41). The outer walls of the several semi-circular positioning rings (41) are rotatably installed in the inner walls of the corresponding semi-circular positioning grooves (42) through a rotating shaft (43). The front walls of the several semi-circular positioning rings (41) are recessed and provided with handles (45).

2. The mechanical shaft seal structure according to claim 1, characterized in that: The outer wall of the sealing ring (31) is fixedly connected to the inner wall of the opening and closing assembly (2). The sealing ring (31) is circular and open. The sealing block (34) is fixedly connected to the left front end of the sealing ring (31).

3. The mechanical shaft seal structure according to claim 1, characterized in that: The left rear end of the sealing ring (31) is attached to the left front end, and a protective film is pasted on the surface of the sealing adhesive layer (33).

4. The mechanical shaft seal structure according to claim 1, characterized in that: The front half-cylinder (22) and the rear half-cylinder (21) are arranged symmetrically front to back. The inner walls of the front half-cylinder (22) and the rear half-cylinder (21) are fixedly connected to the outer wall of the sealing ring (31). The left walls of the front half-cylinder (22) and the rear half-cylinder (21) are attached to each other on the adjacent side.

5. A mechanical shaft seal structure according to claim 1, characterized in that: The semicircular positioning rings (41) are evenly distributed vertically, and the number of semicircular positioning rings (41) is the same as the number of semicircular positioning grooves (42).

6. The mechanical shaft seal structure according to claim 1, characterized in that: The outer walls of several of the semicircular positioning rings (41) are all in contact with the inner walls of the corresponding semicircular positioning grooves (42).

7. A mechanical shaft seal structure according to claim 1, characterized in that: Each of the handles (45) has a fastening bolt (44) screwed onto its inner wall. Each of the fastening bolts (44) is screwed through the corresponding handle (45) and screwed onto the outer wall of the front semi-cylinder (22).

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