Wear-resistant head for an instrument

Abstract

This utility model discloses a wear-resistant head for instruments, including an instrument body, a mounting bracket at the upper end of the instrument body, and a wear-resistant component for protecting the instrument at the upper end of the mounting bracket. The wear-resistant component is equipped with a locking component for connecting to the mounting bracket. This utility model significantly reduces the wear rate by using a hemispherical array wear-resistant layer to deflect the impact angle of particles; the corrugated transition layer absorbs thermal stress, significantly improving the bonding strength; furthermore, the locking component allows for quick replacement of the wear-resistant component, significantly reducing maintenance time and costs, thus solving the protection problem of industrial instruments under high temperature, high wear, and strong vibration conditions.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, and in particular to a wear-resistant head for instruments. Background Technology

[0002] Instruments are divided into devices used in industrial settings such as temperature sensors, pressure transmitters, and flow meters. They consist of a metal housing, internal sensing elements, and a signal conversion module. They measure parameters through physical contact with the medium. A wear-resistant head is a protective component installed at the front of the instrument's measuring end. Common materials are hard alloy or ceramic composite materials. It is fixed to the instrument housing by threaded connections or welding, and is used to contact the medium and withstand mechanical forces. Currently, the existing wear-resistant head for instruments has an integral structure that can only be used for a short time in media containing hard particles before it wears through and becomes perforated, causing the instrument to fail and requiring the entire instrument to be replaced after wear. In addition, the wear-resistant layer separates from the substrate under thermal cycling at -20℃ to 200℃. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies where "the integral structure can only be used for a short time in media containing hard particles before it wears through and perforates, leading to instrument failure and requiring complete replacement of the instrument after wear. Furthermore, the wear-resistant layer separates from the substrate under thermal cycling conditions of -20℃ to 200℃." Therefore, this invention proposes a wear-resistant head for instruments.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A wear-resistant head for an instrument includes: an instrument body, a mounting bracket at the upper end of the instrument body, a wear-resistant component for protecting the instrument at the upper end of the mounting bracket, and a locking component for connecting the mounting bracket on the wear-resistant component.

[0005] As a preferred embodiment of the wear-resistant head for instruments described in this utility model, the wear-resistant component includes a sealing disc, a threaded post fixedly provided at the upper end of the sealing disc, a transition layer provided at the upper end of the threaded post, and a wear-resistant layer provided on the outer side of the transition layer.

[0006] As a preferred embodiment of the wear-resistant head for instruments described in this utility model, the outer surface of the transition layer is corrugated, the wear-resistant layer completely covers the outer surface of the transition layer, and multiple sets of hemispheres are provided at the upper end of the wear-resistant layer.

[0007] As a preferred embodiment of the wear-resistant head for instruments described in this utility model, the locking component includes a slot fixedly formed on the threaded post, a connecting sleeve is provided in the slot, a locking post is fixedly provided in the mounting bracket, and bolt holes are provided on the mounting bracket.

[0008] Compared with the prior art, the beneficial effects of this utility model are: This wear-resistant head deflects the impact angle of particles through a hemispherical array wear-resistant layer, greatly reducing the wear rate; the corrugated transition layer absorbs thermal stress, significantly improving the bonding strength; in addition, with the help of the locking components, the replacement of wear-resistant components only takes a short time, significantly reducing maintenance time costs, and solving the protection problem of industrial instruments under high temperature, high wear, and strong vibration conditions. Attached Figure Description

[0009] Figure 1 This is a perspective view of a wear-resistant head for instruments proposed in this utility model; Figure 2 This is a schematic diagram of the wear-resistant component structure of an instrument wear-resistant head proposed in this utility model; Figure 3 This is a schematic diagram of the locking component structure of a wear-resistant head for instruments proposed in this utility model.

[0010] In the diagram: 101, Instrument body; 102, Mounting bracket; 103, Wear-resistant parts; 1031, Sealing disc; 1032, Threaded post; 1033, Transition layer; 1034, Wear-resistant layer; 104, Locking parts; 1041, Slot; 1042, Connecting sleeve; 1043, Locking post; 1044, Bolt hole; 105, Scale line; 106, Pointer. Detailed Implementation

[0011] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0012] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0013] Reference Figures 1-3 A wear-resistant head for an instrument includes an instrument body 101, a mounting bracket 102 at the upper end of the instrument body 101, a wear-resistant component 103 for protecting the instrument at the upper end of the mounting bracket 102, a locking component 104 for connecting the wear-resistant component 103 to the mounting bracket 102, a scale line 105 on one side of the instrument body 101, and a pointer 106 at the center of one side of the instrument body 101.

[0014] In summary, the improvement of this embodiment lies in: During use, the hemispherical protrusions disperse the impact force, greatly reducing the wear rate. In the event of severe wear, the split design allows only the wear-resistant layer to be replaced, without the need to scrap the entire watch.

[0015] Based on this, other structures also need to be disclosed in detail, such as Please see Figures 1 to 2 Considering that when industrial instruments operate in media containing hard particles, the measuring end is directly subjected to erosion and wear, leading to perforation failure, a wear-resistant component 103 is also required, including a sealing disc 1031. A threaded post 1032 is fixedly provided at the upper end of the sealing disc 1031. A transition layer 1033 is provided at the upper end of the threaded post 1032. A wear-resistant layer 1034 is provided on the outer side of the transition layer 1033. The outer surface of the transition layer 1033 is corrugated. The wear-resistant layer 1034 completely covers the outer surface of the transition layer 1033. A hemisphere is provided at the upper end of the wear-resistant layer 1034.

[0016] Please see Figures 2 to 3 Considering that traditional threaded locking is prone to loosening under vibration conditions, which can cause wear-resistant parts to shift and lead to measurement errors, a locking component 104 is also required. This component includes a slot 1041 fixedly opened on the threaded post 1032, a connecting sleeve 1042 provided in the slot 1041, a locking post 1043 fixedly installed in the mounting bracket 102, and bolt holes 1044 opened on the mounting bracket 102.

[0017] In summary, the working principle of this solution is as follows: When hard particulate media (such as coal powder or slurry) impact the instrument end, the hemispherical array of the wear-resistant layer 1034 deflects the impact angle of the particles, greatly reducing the kinetic energy of the particles. At the same time, the wear is concentrated only on the replaceable wear-resistant layer, ensuring the integrity of the instrument. Meanwhile, when the ambient temperature fluctuates, the corrugated transition layer 1033 absorbs thermal expansion through the deformation of the crests and troughs, which can prevent the interface between the wear-resistant layer 1034 and the threaded post 1032 from delamination. When it is necessary to replace the wear-resistant head, it is only necessary to remove the screw set on the bolt hole 1044 and then rotate the threaded post 1032 to remove it for replacement.

[0018] It is worth noting that the entire device is controlled by a controller. Since the controller is a common device and belongs to existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0019] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the protection scope of this utility model. In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," or "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

Claims

1. A wear-resistant head for instruments, comprising: The instrument body (101) has a mounting bracket (102) at its upper end. The mounting bracket (102) has a wear-resistant component (103) for protecting the instrument at its upper end, and a locking component (104) for connecting the mounting bracket (102) is provided on the wear-resistant component (103).

2. The wear-resistant head for instruments according to claim 1, characterized in that: The wear-resistant component (103) includes a sealing disc (1031), a threaded post (1032) is fixedly provided at the upper end of the sealing disc (1031), a transition layer (1033) is provided at the upper end of the threaded post (1032), and a wear-resistant layer (1034) is provided on the outside of the transition layer (1033).

3. The wear-resistant head for instruments according to claim 2, characterized in that: The outer surface of the transition layer (1033) is corrugated, and the wear-resistant layer (1034) completely covers the outer surface of the transition layer (1033). Multiple sets of hemispheres are provided on the upper end of the wear-resistant layer (1034).

4. The wear-resistant head for instruments according to claim 2, characterized in that: The locking component (104) includes a slot (1041) fixedly opened on the threaded post (1032), a connecting sleeve (1042) is provided in the slot (1041), a locking post (1043) is fixedly provided in the mounting bracket (102), and a bolt hole (1044) is opened on the mounting bracket (102).

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