Split type dust scraping ring suitable for scraping heavy-dust and heavy-pollution environment

Abstract

The utility model relates to a split type dust scraping ring suitable for scraping heavy-dust and heavy-pollution environments, aims to solve the technical problem that the existing dust scraping ring is not easy to disassemble and assemble, and adopts the technical scheme that a dust scraping lip is arranged at the upper end of the dust scraping ring made of polyformaldehyde or modified polyformaldehyde, and the dust scraping ring and the dust scraping lip are divided into two semicircular structures with the same structure; the two semicircular matching surfaces are U-shaped curved surfaces, and the two ends of each semicircular structure are a convex male head and a concave female head respectively. The dust scraping ring adopts a split structure, so that the dust scraping ring is more convenient to mount and dismount, the maintenance efficiency is greatly improved, the matching surface adopts a'female head 'and'male head' structure, the matching length is increased, particulate matters can be prevented from entering the dust scraping ring from a split position, and the lasting dust scraping performance of the dust scraping ring is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic reciprocating sealing systems, and in particular relates to a split dust scraper ring suitable for scraping heavy dust and heavy pollution environments. Background Art

[0002] In modern construction industry applications, a concrete pump, also known as a concrete pump, is widely used. It consists of a pump body and a delivery pipe. It is a machine that uses pressure to continuously transport concrete along a pipeline and is widely used in building construction, bridge construction and tunnel construction.

[0003] The drive of the concrete pump mainly relies on the hydraulic cylinder to drive the pumping piston to push the concrete into the conveying pipeline and then transport it to the designated structural position. Among them, the hydraulic cylinder is connected to the pump head by a connector. The piston rod extending from the hydraulic cylinder will come into contact with a large amount of mud, gravel and other particles. Installing a dust ring at the guide sleeve (or cylinder head) can scrape dust and prevent particles from being brought into the hydraulic cylinder system. However, the traditional dust ring is mainly made of rubber or polyurethane. Although this type of material has good elasticity and can effectively scrape off some water stains and light dust, it is not hard enough to completely scrape off particles such as mud and gravel, and its scraping lip will be damaged by particles, which greatly limits its service life. If hard engineering plastics are used to make the scraper ring, the corresponding guide sleeve (or cylinder head) must be designed as an open groove, which increases the processing cost. At the same time, during installation and maintenance, the connection between the piston rod and the pump head needs to be completely disassembled before the hard scraper ring can be installed, which greatly increases the difficulty of installation and maintenance cycle. Utility Model Content

[0004] The utility model aims to solve the above problems and provide a split dust scraper ring suitable for scraping heavy dust and heavy pollution environment.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A split scraper ring suitable for scraping heavy dust and heavy pollution environment, a scraper lip is provided at the upper end of the scraper ring, the scraper ring and the scraper lip are divided into two "semicircle" structures with the same structure, and the matching surfaces of the two "semicircle" shapes are U-shaped curved surfaces.

[0007] Furthermore, the two ends of the "semicircular" structure are respectively a protruding "male head" and a recessed "female head".

[0008] Furthermore, the scraper ring is made of polyoxymethylene or modified polyoxymethylene.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1. The scraper ring of the utility model adopts a split structure, which makes its installation and disassembly more convenient and greatly improves the maintenance efficiency;

[0011] 2. The mating surface of the utility model adopts a "female head" and a "male head" structure, which increases the mating length, can prevent particles from entering the interior from the split part, and ensure the long-lasting dust scraping performance of the dust scraping ring;

[0012] 3. The scraper ring of the utility model is made of polyoxymethylene or modified polyoxymethylene with higher hardness, which has higher scraping efficiency and longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0015] Figure 3 It is a schematic diagram of the structure of the split components of the utility model;

[0016] In the figure, 1-dust scraper ring; 2-dust scraper lip; 3-matching surface; 4-"female head"; 5-"male head". DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0018] like Figure 1-3 As shown, a split scraper ring suitable for scraping heavy dust and heavy pollution environment, the scraper ring 1 is made of polyformaldehyde with high hardness, a scraper lip 2 is provided at the upper end of the scraper ring 1, and the scraper lip 2 fits tightly with the piston rod, which can effectively scrape away mud, gravel and other particulates, the scraper ring 1 and the scraper lip 2 are divided into two "semicircular" structures with the same structure, and the two ends of the "semicircular" structure are respectively a convex "male head" 5 and a concave "female head" 4, and the two "semicircular" matching surfaces are U-shaped curved surfaces.

[0019] The scraper ring 1 can also be made of modified polyoxymethylene.

[0020] The working process of this utility model:

[0021] When in use, the two "semicircular" components are respectively put on the piston rod, the "female head" 4 and the "male head" 5 cooperate with each other, and the matching surface 3 is tightly fitted, and finally the guide sleeve (end cover) is pressed, and the locking bolt on the end face can be tightened to make it work normally. When in use, the utility model can scrape heavy dust and dirt very well, and even if the scraper lip 2 is severely worn and needs to be replaced, it can be easily disassembled and installed, which greatly improves the maintenance efficiency.

Claims

1. A split type scraper ring suitable for scraping heavy dust and heavy pollution environment, wherein a scraper lip (2) is provided at the upper end of the scraper ring (1), characterized in that: The scraper ring (1) and the scraper lip (2) are divided into two "semicircular" structures with the same structure, and the matching surfaces of the two "semicircular" structures are U-shaped curved surfaces.

2. The split dust scraper ring suitable for scraping heavy dust and heavy pollution environment according to claim 1 is characterized in that: The two ends of the "semicircular" structure are respectively a protruding "male head" (5) and a recessed "female head" (4).

3. The split dust scraper ring suitable for scraping heavy dust and heavy pollution environment according to claim 1 is characterized in that: The scraper ring (1) is made of polyoxymethylene or modified polyoxymethylene.

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