Scaling type vacuum pug mill mud outlet barrel

Abstract

The utility model relates to the field of vacuum pug mill accessories, in particular to a scaling type vacuum pug mill mud outlet barrel which comprises a shrinking barrel and an expanding barrel, a front end necking opening of the shrinking barrel is connected with an outlet of a vacuum pug mill, and a rear end necking opening of the shrinking barrel is connected with a front end necking opening of the expanding barrel. The shrinkage cylinder comprises a first-stage shrinkage cylinder and a second-stage shrinkage cylinder, the first-stage shrinkage cylinder and the second-stage shrinkage cylinder are connected to form a second-stage compression structure, the vacuum pug mill continuously outputs pug to the shrinkage cylinder, and the shrinkage cylinder performs second-stage compression on the pug through the second-stage compression structure and then extrudes the pug into the expansion cylinder. According to the mud discharging barrel, the compactness and the uniformity of mud can be further improved, directional arrangement of mud particles is changed, the quality of products machined by the mud discharging barrel is stable, and the cracking rate is remarkably reduced.

Description

Technical Field

[0001] The utility model relates to the field of vacuum mud kneading machine accessories, in particular to a retractable mud discharge tube of a vacuum mud kneading machine. Background Art

[0002] In the disc-shaped suspended porcelain insulator process, vacuum is a key process to ensure the compactness of the mud and enhance the mechanical and electrical properties. The mud outlet tube located at the front end outlet of the vacuum mud kneading machine used is generally designed by the user according to the process requirements.

[0003] Most commonly used mud discharge barrels are three-stage compressed, and the diameter of the mud discharge barrel is reduced from large to small three times, so that the mud material becomes more compact to ensure the mechanical strength and electrical performance of the product. However, the existing three-stage compressed mud discharge barrel has the following problems: although the mud material after three-stage compression is relatively dense, due to the movement of the mud material and the resistance of the mud discharge barrel, the density at the center of the mud segment is still smaller than the density on the surface of the mud segment, and the difference is large. At this time, if the product is directly processed, the product will also have the problem of increased cracking rate and lower qualified rate, resulting in large cracking losses during drying and firing of the product. Utility Model Content

[0004] In order to solve the above technical problems existing in the prior art, the utility model proposes a retractable vacuum mud kneading machine mud discharge tube, and its specific technical solution is as follows:

[0005] A retractable vacuum mud extruder mud outlet cylinder comprises a contraction cylinder and an expansion cylinder, wherein the front end expansion opening of the contraction cylinder is connected to the outlet of the vacuum mud extruder, and the rear end contraction opening of the contraction cylinder is connected to the front end contraction opening of the expansion cylinder, the contraction cylinder comprises a first-stage contraction cylinder and a second-stage contraction cylinder, and the first-stage contraction cylinder and the second-stage contraction cylinder are connected to form a secondary compression structure, the vacuum mud extruder continuously outputs mud to the contraction cylinder, and the contraction cylinder performs secondary compression on the mud through the secondary compression structure and then squeezes it into the expansion cylinder.

[0006] Furthermore, the front end expansion opening of the first-stage shrinking tube is connected to the outlet of the vacuum mud kneading machine, the rear end contraction opening of the first-stage shrinking tube is connected to the front end expansion opening of the second-stage shrinking tube, and the rear end contraction opening of the second-stage shrinking tube is matched and connected to the front end contraction opening of the expansion tube.

[0007] Furthermore, the structure of the first-level shrinking cylinder includes: a first-level conical cylinder section and a first-level straight cylinder section. The front end of the first-level conical cylinder section, i.e., the front end flared opening of the first-level shrinking cylinder, is connected to the outlet of the vacuum mud kneading machine. The rear end of the first-level conical cylinder section is matched and connected to the front end of the first-level straight cylinder section. The end of the first-level straight cylinder section, i.e., the rear end flared opening of the first-level shrinking cylinder, is matched and connected to the front end flared opening of the second-level shrinking cylinder.

[0008] Furthermore, the first-stage conical cylinder section and the first-stage straight cylinder section are integrally formed.

[0009] Furthermore, the structure of the expansion tube includes: a second-stage conical tube section and a second-stage straight tube section, the front end of the second-stage conical tube section is matched and connected with the rear end contraction of the second-stage contraction tube, and the rear end of the second-stage conical tube section is matched and connected with the front end of the second-stage straight tube section.

[0010] Furthermore, the rear end of the second-stage conical cylinder section is integrally connected with the front end of the second-stage straight cylinder section.

[0011] Furthermore, the front end of the second-stage conical cylinder section is integrally formed and connected with the rear end of the second-stage shrinking cylinder.

[0012] Furthermore, the first-stage straight tube section and the second-stage straight tube section have the same tube diameter.

[0013] Furthermore, the first-stage shrinking tube and the second-stage shrinking tube are connected via a flange.

[0014] Furthermore, the shrinking angle of the second-stage shrinking tube is not greater than 20°.

[0015] The mud discharge tube of the utility model can further improve the density and uniformity of the mud material, change the directional arrangement of the mud material particles, so that the quality of the processed products is stable and the cracking rate is significantly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 1 is a schematic cross-sectional structure diagram of a mud outlet tube of a retractable vacuum mud kneading machine according to the present embodiment;

[0017] Figure 2 This is a cross-sectional view of the state of the mud material in the mud outlet tube of a retractable vacuum mud kneading machine of this embodiment;

[0018] In the figure, 1 is the first-stage contraction cylinder, 2 is the second-stage contraction cylinder, 3 is the expansion cylinder, 4 is the mud material, 101 is the first-stage conical cylinder section, 102 is the first-stage straight cylinder section, 301 is the second-stage conical cylinder section, and 302 is the second-stage straight cylinder section. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] In actual production, in order to further improve the density and uniformity of the mud material, this embodiment designs and discloses a retractable mud discharge tube, such as Figure 1 As shown, the mud discharge tube can be an integrated structure or a segmented structure connected by a flange, and the mud discharge tube is installed at the outlet of the vacuum mud kneading machine.

[0021] The mud discharge tube includes: a contraction tube and an expansion tube 3, the front end expansion opening of the contraction tube is connected to the outlet of the vacuum mud extruder, the rear end contraction opening of the contraction tube is connected to the front end contraction opening of the expansion tube, the contraction tube includes a first-stage contraction tube 1 and a second-stage contraction tube 2, the first-stage contraction tube 1 and the second-stage contraction tube 2 are connected by a flange to form a two-stage compression structure, the vacuum mud extruder continuously outputs mud 4 to the contraction tube, the contraction tube performs two-stage compression on the mud 4 through the two-stage compression structure and then squeezes it into the expansion tube 3.

[0022] Specifically, the front end flare of the first-stage shrinking tube 1 is connected to the outlet of the vacuum clay extruder, the rear end flare of the first-stage shrinking tube 1 is connected to the front end flare of the second-stage shrinking tube 2, and the rear end flare of the second-stage shrinking tube 2 is integrally connected to the front end flare of the expansion tube 3. The structure of the first-stage shrinking tube 1 includes: a first-stage conical tube section 101 and a first-stage straight tube section 102, the front end of the first-stage conical tube section 101, i.e., the front end flare of the first-stage shrinking tube 1, is connected to the outlet of the vacuum clay extruder, the rear end of the first-stage conical tube section 101 is integrally connected to the front end of the first-stage straight tube section 102, and the end of the first-stage straight tube section 102, i.e., the rear end flare of the first-stage shrinking tube 1, is matched and connected to the front end flare of the second-stage shrinking tube 2 through a flange. The structure of the expansion tube 3 includes: a second-stage conical tube section 301 and a second-stage straight tube section 302. The front end of the second-stage conical tube section 301 is integrally connected with the rear end of the second-stage contraction tube 2, and the rear end of the second-stage conical tube section 301 is integrally connected with the front end of the second-stage straight tube section 302.

[0023] In one embodiment, a φ500 vacuum mud kneading machine is used, and the mud material 4 is squeezed out from the device with an outlet diameter of φ500 into the mud outlet tube after being vacuumed, and then compressed by the first-stage shrinking tube 1, such as Figure 2As shown, in this embodiment, the front end expansion diameter of the first-stage shrinking cylinder 1 is φ430, and the rear end shrinking diameter is φ320, that is, the diameter of the mud material 4 is first compressed to φ430, and the vacuum mud extruder continues to work, and the mud material 4 is continuously squeezed into the straight section of the first-stage shrinking cylinder 1 for further compression, thereby compressing the diameter of the mud material 4 to φ320. At this time, the mud material 4 is relatively dense after being compressed twice, but due to the movement of the mud material 4 and the resistance of the mud outlet cylinder, the density of the mud section center in the first-stage shrinking cylinder 1 is smaller than the density of the mud section surface, and the difference is relatively large; then the mud material 4 continues to move forward under the push of the vacuum mud extruder and enters the second-stage shrinking cylinder 1. Tube 2, the front end expansion diameter of the second-stage shrinking tube 2 is φ320, and the rear end shrinking diameter is φ250. The diameter of the clay 4 entering therein is gradually compressed from φ320 to φ250. At this time, the density of the clay is further compressed, and the compression angle θ is not greater than 20°, and 20° is selected in this embodiment; finally, the clay 4 with a diameter of φ250 enters the expanding tube 3, the front end shrinking diameter of the expanding tube 3 is φ250, and the rear end expansion diameter is φ320. The diameter of the clay 4 is suddenly enlarged, the outer layer of the clay 4 is suddenly released, and the surface density is reduced to approximately the same as the center. The density difference between the center and the surface of the clay becomes smaller, and a compact and uniform clay 4 is obtained.

[0024] After actual comparison, using the conventional three-stage compression mud discharge tube, the cracking rate of mud processed products is about 10%, and after replacing the zoomable mud discharge tube of this embodiment, the cracking rate of mud processed products is about 1%. Therefore, the mud 4 compressed by the mud discharge tube is more compact, and the mud 4 is better bonded, which significantly improves the various properties of the processed products.

[0025] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present utility model are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly. In the present utility model, unless otherwise clearly specified and limited, the terms "connection", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral whole; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0026] The above is only a preferred implementation case of the utility model, and does not limit the utility model in any form. Although the implementation process of the utility model is described in detail above, for those familiar with the art, they can still modify the technical solutions recorded in the above examples, or replace some of the technical features therein with equivalents. All modifications and equivalent replacements made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A retractable vacuum mud extruder mud outlet cylinder, comprising a contraction cylinder and an expansion cylinder (3), wherein the front end expansion opening of the contraction cylinder is connected to the outlet of the vacuum mud extruder, and the rear end contraction opening of the contraction cylinder is connected to the front end contraction opening of the expansion cylinder (3), characterized in that: The shrinking cylinder comprises a first-stage shrinking cylinder (1) and a second-stage shrinking cylinder (2), and the first-stage shrinking cylinder (1) and the second-stage shrinking cylinder (2) are connected to form a two-stage compression structure. The vacuum clay extruder continuously outputs clay (4) to the shrinking cylinder, and the shrinking cylinder performs two-stage compression on the clay (4) through the two-stage compression structure and squeezes the clay (4) into the expansion cylinder (3).

2. The mud outlet tube of a retractable vacuum mud making machine as claimed in claim 1, characterized in that: The front end flared opening of the first-stage shrinking cylinder (1) is connected to the outlet of the vacuum clay kneading machine, the rear end flared opening of the first-stage shrinking cylinder (1) is connected to the front end flared opening of the second-stage shrinking cylinder (2), and the rear end flared opening of the second-stage shrinking cylinder (2) is matched and connected to the front end flared opening of the expanding cylinder (3).

3. The mud outlet tube of a retractable vacuum mud making machine as claimed in claim 2, characterized in that: The structure of the first-stage shrinking cylinder (1) comprises: a first-stage conical cylinder section (101) and a first-stage straight cylinder section (102); the front end of the first-stage conical cylinder section (101), i.e., the front end flared opening of the first-stage shrinking cylinder (1), is connected to the outlet of the vacuum clay machine; the rear end of the first-stage conical cylinder section (101) is matched and connected to the front end of the first-stage straight cylinder section (102); and the end of the first-stage straight cylinder section (102), i.e., the rear end flared opening of the first-stage shrinking cylinder (1), is matched and connected to the front end flared opening of the second-stage shrinking cylinder (2).

4. The mud outlet tube of a retractable vacuum mud making machine as claimed in claim 3, characterized in that: The first-stage conical cylinder section (101) and the first-stage straight cylinder section (102) are integrally formed.

5. The mud outlet tube of a retractable vacuum mud making machine as claimed in claim 3, characterized in that: The structure of the expansion cylinder (3) comprises: a second-stage conical cylinder section (301) and a second-stage straight cylinder section (302); the front end of the second-stage conical cylinder section (301) is matched and connected with the rear end of the second-stage contraction cylinder (2); and the rear end of the second-stage conical cylinder section (301) is matched and connected with the front end of the second-stage straight cylinder section (302).

6. The mud outlet tube of a retractable vacuum mud making machine as claimed in claim 5, characterized in that: The rear end of the second-stage conical cylinder section (301) and the front end of the second-stage straight cylinder section (302) are integrally formed and connected.

7. The mud outlet tube of a retractable vacuum mud making machine as claimed in claim 5, characterized in that: The front end of the second-stage conical cylinder section (301) is integrally formed and connected with the rear end of the second-stage shrinking cylinder (2).

8. The mud outlet tube of a retractable vacuum mud making machine as claimed in claim 5, characterized in that: The first-stage straight-tube section (102) and the second-stage straight-tube section (302) have the same tube diameter.

9. The mud outlet tube of a retractable vacuum mud making machine according to claim 1, characterized in that: The first-stage shrinking cylinder (1) and the second-stage shrinking cylinder (2) are connected via a flange.

10. The mud outlet tube of a retractable vacuum mud making machine according to claim 1, characterized in that: The shrinking angle of the second-stage shrinking tube (2) is not greater than 20°.

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