Screen feed port structure of pulverizer

Abstract

The utility model discloses a crusher screen feed port structure which comprises a hollow shell, an opening is formed in a top plate of the shell, two screens are arranged on the two sides, below the opening, in the shell, the two screens define a crushing cavity, a blanking port communicated with the opening is formed in the top of the crushing cavity, and a feeding port communicated with the blanking port is formed in the top of the crushing cavity. The guide channel is arranged between the opening and the blanking port and is used for guiding raw materials to enter the crushing cavity from the blanking port; and the guide channel consists of a pair of wear-resisting plates. According to the utility model, the guide channel formed by the pair of wear-resistant plates is used, so that the impact of uncrushed particles on the upper part of the screen mesh is dispersed, the wear of the screen mesh is reduced, and the service life of the screen mesh is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of crushers, specifically to a crusher screen feed inlet structure. Background Technology

[0002] A pulverizer is a machine that crushes large solid raw materials to the required size. By installing a screen inside the pulverizer's grinding chamber, raw materials that haven't reached the required size continue to be crushed, while those that have reached the required size pass through the screen and exit the grinding chamber. However, when raw materials enter the grinding chamber, insufficiently crushed materials rebound, with approximately 40% of the particles re-impacting the upper part of the screen. Because the impact angle and velocity of the rebounding particles are relatively concentrated, the wear on the upper part of the screen is significantly higher than in other areas, thus increasing the frequency of screen replacement. Utility Model Content

[0003] Based on this, and in response to the aforementioned technical problems, this utility model provides a pulverizer screen feed inlet structure.

[0004] The objective of this utility model can be achieved through the following technical solutions:

[0005] A pulverizer screen feed inlet structure includes a hollow shell with an opening on the top plate of the shell. Two screens are arranged on both sides below the opening inside the shell, forming a pulverizing chamber. The top of the pulverizing chamber has a discharge port communicating with the opening. The structure also includes a guide channel between the opening and the discharge port for guiding raw materials from the discharge port into the pulverizing chamber. The guide channel is composed of a pair of wear-resistant plates.

[0006] By using the above technical solution, the impact of substandard particles on the upper part of the screen is dispersed by the use of a guide channel made of wear-resistant plate, thereby reducing wear on the screen and extending its service life.

[0007] In a specific embodiment of this utility model: the two wear-resistant plates are inclined to form a flared guide channel with a smaller upper end and a larger lower end. The flared guide channel helps to disperse the impact force of uncrushed particles on the guide channel.

[0008] In a specific embodiment of this invention, multiple wear-resistant strips are distributed on the impact surface of the wear-resistant plate facing the crushing chamber. This structure disperses wear on the wear-resistant plate, extending its service life.

[0009] In a specific embodiment of this utility model: both the wear-resistant plate and the wear-resistant strip are made of NM500 steel plate.

[0010] In a specific embodiment of this utility model: a storage trough is provided at the bottom of the shell, directly below the opening. Two screens are symmetrically arranged on both sides of the storage trough. The lower edge of the wear-resistant plate presses down on the upper folded edge of the corresponding screen, and the lower folded edges of the screens are all secured to the edge of the storage trough opening. A screen frame for pressing the screen is also provided on the outside of the screen. This structure not only guides the raw material smoothly into the crushing chamber to prevent leakage, but also constrains the screen.

[0011] In summary, this utility model uses a guide channel made of wear-resistant plate to disperse the impact of substandard particles on the upper part of the screen, thereby reducing wear on the screen, extending the service life of the screen, and preventing material leakage. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] Figure 1 This is a schematic diagram of the feed inlet structure of a pulverizer screen according to the present invention;

[0014] Figure 2 This is the front view of this utility model;

[0015] Figure 3 yes Figure 2 Sectional view at point AA;

[0016] Figure 4 yes Figure 3 Enlarged view of point B in the middle;

[0017] Figure 5 yes Figure 3 Enlarged view of point C in the middle;

[0018] Figure 6 This is a schematic diagram of the structure of the wear-resistant plate of this utility model. Detailed Implementation

[0019] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1 , Figure 2 and Figure 3As shown, this utility model is a screen feed inlet structure for a crusher, including a hollow shell 10. An opening 101 is provided on the top plate of the shell 10. Two screens 11 are provided on both sides below the opening inside the shell 10. The two screens 11 together form a crushing chamber 9, and the top of the crushing chamber 9 has a discharge port communicating with the opening 101.

[0021] like Figure 3 and Figure 6 As shown, in this embodiment, a guide channel 20 is provided between the opening 101 and the discharge port to guide the raw material into the crushing chamber. This guide channel 20 is composed of a pair of wear-resistant plates 21. By using this guide channel composed of a pair of wear-resistant plates, the impact of uncrushed particles on the upper part of the screen is dispersed, thereby reducing wear on the screen and extending its service life.

[0022] like Figure 3 As shown, in this embodiment, the two wear-resistant plates 21 are inclined to form a flared guide channel with a smaller upper end and a larger lower end. The flared guide channel helps to disperse the impact force of substandard particles on the guide channel.

[0023] like Figure 3 and Figure 6 As shown, in this embodiment, multiple wear-resistant strips 22 are distributed on the impact surface of the wear-resistant plate 21 facing the crushing chamber. This structure disperses wear on the wear-resistant plate, extending its service life.

[0024] In this embodiment, both the wear-resistant plate and the wear-resistant strip are made of NM500 steel plate.

[0025] like Figure 3 , Figure 4 and Figure 5 As shown, a storage trough 103 is located at the bottom of the housing 10, directly below the opening 101. Two screens 11 are symmetrically arranged on both sides of the storage trough 103. The lower edges of the two wear-resistant plates press against the upper folded edges 111 of the corresponding screens 11, and the lower folded edges 112 of the screens 11 are secured to the edge of the opening of the storage trough 103. A screen frame 12 for pressing the screens 11 is also provided on the outside of the screens 11. This structure not only guides the raw materials smoothly into the crushing chamber to prevent leakage, but also constrains the screens.

[0026] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A screen feed inlet structure for a crusher, comprising a hollow shell, an opening on the top plate of the shell, two screens arranged on both sides below the opening inside the shell, the two screens forming a crushing chamber, the top of the crushing chamber having a discharge port communicating with the opening, characterized in that, It also includes a guide channel disposed between the opening and the discharge port to guide the raw material from the discharge port into the crushing chamber, the guide channel being composed of a pair of wear-resistant plates.

2. The pulverizer screen feed inlet structure according to claim 1, characterized in that, The two wear-resistant plates are inclined to form a flared guide channel with a smaller upper end and a larger lower end.

3. The pulverizer screen feed inlet structure according to claim 1, characterized in that, The wear-resistant plate has multiple wear-resistant strips distributed on its impact surface facing the crushing chamber.

4. The pulverizer screen feed inlet structure according to claim 3, characterized in that, Both the wear-resistant plate and the wear-resistant strip are made of NM500.

5. The pulverizer screen feed inlet structure according to claim 1, characterized in that, The bottom of the shell is provided with a storage trough directly below the opening. Two screens are symmetrically arranged on both sides of the storage trough. The lower edge of the wear-resistant plate presses down on the upper folded edge of the corresponding screen. The lower folded edge of the screen is stuck on the edge of the storage trough opening. A screen frame for pressing the screen is also provided on the outside of the screen.

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