Micro-positive pressure balancing device

Abstract

The utility model relates to the technical field of powder metallurgy, in particular to a micro-positive pressure balancing device which comprises a furnace body and a balancing assembly arranged on the furnace body, the balancing assembly comprises a chock plug, a cover body arranged on the chock plug and a valve element movably arranged on the chock plug, and an air inlet hole is formed in the front side of the chock plug. An air outlet hole is formed in the rear side of the chock plug, and the valve element is located in the air inlet hole and used for blocking or opening the air inlet hole so that the air inlet hole and the air outlet hole can be disconnected or communicated. The sealing performance is enhanced, it is ensured that gas is introduced into the furnace body to wash powder, carbon-containing gas is prevented from overflowing, the environment is effectively protected, and potential safety hazards are eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of powder metallurgy, in particular to a micro positive pressure balancing device. Background Art

[0002] The existing operating procedures of the powder metallurgy industry generally include batching, pressing, sintering and other processes to produce metal materials, composite materials and various types of products. In the pressing process, it is often necessary to mix various molding agents in the batched powder, and these molding agents contain hydrocarbons. Hydrocarbons will vaporize and crack under high temperature, resulting in abnormal conditions such as cracks and carburization in the manufactured materials or products. In order to avoid the above abnormal conditions, it is necessary to remove the molding agent before sintering the powder to a high temperature, that is, at a certain temperature, directly introduce gas into the furnace body to continuously flush the powder, thereby taking away the molding agent and then discharging it from the furnace body's pipe. However, due to the insufficient sealing of the furnace body, the carbon-containing gas easily spreads from the furnace body to the outside environment, causing environmental pollution and posing safety hazards. Utility Model Content

[0003] The utility model aims to provide a micro-positive pressure balancing device to address the deficiencies of the prior art, enhance the sealing performance, ensure that gas is introduced into the furnace body to flush the powder, avoid the overflow of carbon-containing gas, effectively protect the environment, and eliminate safety hazards.

[0004] To achieve the above-mentioned purpose, the utility model provides a micro-positive pressure balancing device, including a furnace body and a balancing component arranged on the furnace body, the balancing component including a plug, a cover body arranged on the plug and a valve core movably arranged on the plug, an air inlet hole is arranged on the front side of the plug, an air outlet hole is arranged on the rear side of the plug, the valve core is located in the air inlet hole and is used to block or open the air inlet hole so as to disconnect or connect the air inlet hole and the air outlet hole.

[0005] Preferably, the air inlet hole includes a connecting portion and a first access portion and a second access portion connected to the connecting portion, the first access portion and the second access portion are respectively arranged on both sides of the plug head, the connecting portion is arranged in the middle of the plug head and abuts against the valve core, and the connecting portion, the first access portion and the second access portion are integrally formed and have a cross-shaped structure.

[0006] Preferably, a conical head is provided at one end of the valve core close to the connecting portion, and the valve core protrudes into the connecting portion through the conical head.

[0007] Preferably, two air outlet holes are provided, the two air outlet holes are arranged in parallel and at intervals, and the two air outlet holes penetrate the plug and are connected to the furnace body.

[0008] Preferably, the cover body is covered on the top of the plug so that the inner wall of the cover body contacts the outer wall of the plug, and an air storage space is formed between the cover body and the plug.

[0009] Preferably, both sides of the plug are provided with limiting protrusions, and the limiting protrusions are protruded from the outer wall of the plug so that the cover body stops and abuts against the limiting protrusions.

[0010] The utility model has the beneficial effects of enhancing the sealing performance, ensuring that gas is introduced into the furnace body to flush the powder, avoiding the overflow of carbon-containing gas, effectively protecting the environment, and eliminating safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model.

[0012] Figure 2 for Figure 1 Schematic diagram of the partially enlarged cross-sectional structure at point A in the middle.

[0013] Reference numerals include:

[0014] 1——Furnace body

[0015] 2——Balance assembly 21——Plug 22——Cover

[0016] 23——Valve core 231——Conical head

[0017] 24——air inlet 241——first access portion 242——second access portion

[0018] 243——Connectivity

[0019] 25——air outlet 26——air storage space 27——limiting protrusion. DETAILED DESCRIPTION

[0020] The utility model is described in detail below with reference to the accompanying drawings.

[0021] like Figure 1 to Figure 2 As shown, a micro-positive pressure balancing device of the utility model comprises a furnace body 1 and a balancing assembly 2 arranged on the furnace body 1, the balancing assembly 2 comprises a plug 21, a cover body 22 arranged on the plug 21 and a valve core 23 movably arranged on the plug 21, an air inlet 24 is arranged on the front side of the plug 21, an air outlet 25 is arranged on the rear side of the plug 21, the valve core 23 is located in the air inlet 24 and is used to block or open the air inlet 24, so that the air inlet 24 and the air outlet 25 are disconnected or connected.

[0022] During operation, gas is introduced from the air inlet 24, and the gas enters the interior of the plug 21 through the air inlet 24, and pushes up the valve core 23, so that the air inlet 24 is connected with the air outlet 25, and the gas is output to the interior of the furnace body 1 through the air outlet 25, which helps the gas to continuously flush the powder in the furnace body 1, thereby effectively taking away the molding agent, thereby realizing the gas connection operation in the sealed environment between the cover body 22 and the plug 21, so that the direction of the gas in the furnace body 1 changes periodically, and the powder in the furnace body 1 is flushed more comprehensively and fully. And ensure that the air pressure in the cover body 22 is greater than the air pressure in the furnace body 1, improve the air tightness, effectively control and protect the environment, and can also adaptively adjust the pressure of the micro-positive pressure by replacing the valve core 23 of different weights, thereby adjusting the flow speed of the gas between the air inlet 24 and the air outlet 25. When the gas is stopped from entering the air inlet 24, the valve core 23 is pressed and blocked in the air inlet 24 by its own weight, so that the air inlet 24 and the air outlet 25 are disconnected. One or more balance components 2 can also be installed on the furnace body 1 according to process requirements, and the scope of application is wide. The utility model enhances the sealing performance, ensures that the powder is flushed by passing gas into the furnace body 1, avoids the overflow of carbon-containing gas, effectively protects the environment, and eliminates safety hazards.

[0023] The air inlet 24 of this embodiment includes a connecting portion 243 and a first access portion 241 and a second access portion 242 connected to the connecting portion 243. The first access portion 241 and the second access portion 242 are respectively arranged on both sides of the plug head 21. The connecting portion 243 is arranged in the middle of the plug head 21 and abuts against the valve core 23. The connecting portion 243, the first access portion 241 and the second access portion 242 are integrally formed and have a cross-shaped structure. Specifically, the first access portion 241 and the second access portion 242 are respectively arranged on both sides of the plug 21, and the connecting portion 243 is arranged in the middle of the plug 21 and abuts against the valve core 23, so that the connecting portion 243, the first access portion 241, and the second access portion 242 are integrally formed and have a cross-shaped structure, so that the gas is injected from the first access portion 241 and the second access portion 242 respectively, and is concentrated and aggregated in the connecting portion 243 to form a strong airflow, which pushes the valve core 23 upward and lifts it, thereby connecting the air inlet 24 and the air outlet 25, making it convenient for the air flow to enter the interior of the furnace body 1 through the air outlet 25.

[0024] The valve core 23 of this embodiment is provided with a conical head 231 at one end close to the connecting portion 243, and the valve core 23 protrudes into the connecting portion 243 through the conical head 231. Specifically, the valve core 23 protrudes into the connecting portion 243 through the conical head 231, and when the airflow pushes and lifts the valve core 23 upward, the airflow can flow upward along the two side edges of the conical head 231, and the airflow flows out from the gap between the valve core 23 and the connecting portion 243, so that the airflow enters the air outlet 25.

[0025] In this embodiment, two air outlet holes 25 are provided, the two air outlet holes 25 are arranged in parallel and at intervals, and the two air outlet holes 25 penetrate the plug 21 and communicate with the furnace body 1. Specifically, the two air outlet holes 25 are arranged in parallel and at intervals inside the plug 21, the two air outlet holes 25 are located at the rear side of the plug 21, and the connecting portion 243 is located at the front side of the plug 21, the two work independently of each other, and the two air outlet holes 25 penetrate the plug 21 and communicate with the furnace body 1, thereby increasing the flow rate of the airflow entering the furnace body 1.

[0026] The cover body 22 of this embodiment is covered on the top of the plug head 21, so that the inner wall of the cover body 22 is against the outer wall of the plug head 21, and an air storage space 26 is formed between the cover body 22 and the plug head 21. Specifically, the cover body 22 is covered on the top of the plug head 21, and an air storage space 26 is formed between the cover body 22 and the plug head 21. The airflow flows in the air storage space 26, and the inner wall of the cover body 22 is against the outer wall of the plug head 21, ensuring good air tightness between the cover body 22 and the plug head 21.

[0027] In this embodiment, both sides of the plug 21 are provided with limiting protrusions 27, which are formed by protruding from the outer wall of the plug 21, so that the cover 22 stops and abuts against the limiting protrusions 27. Specifically, as a preferred embodiment, two limiting protrusions 27 are provided, and the two limiting protrusions 27 are formed by protruding from both sides of the plug 21, which helps the end of the cover 22 to stop and abut against the limiting protrusions 27. With the help of the limiting protrusions 27, the cover 22 is effectively stopped and abutted, and the cover 22 is prevented from accidentally falling off from the plug 21, and the limiting effect is good.

[0028] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A micro positive pressure balancing device, characterized in that: The invention comprises a furnace body and a balancing component arranged on the furnace body, wherein the balancing component comprises a plug, a cover body arranged on the plug and a valve core movably arranged on the plug, an air inlet hole is arranged on the front side of the plug, an air outlet hole is arranged on the rear side of the plug, and the valve core is located in the air inlet hole and is used for blocking or opening the air inlet hole so as to disconnect or connect the air inlet hole and the air outlet hole.

2. A micro positive pressure balancing device according to claim 1, characterized in that: The air inlet hole includes a connecting portion and a first access portion and a second access portion connected to the connecting portion, the first access portion and the second access portion are respectively arranged on both sides of the plug head, the connecting portion is arranged in the middle of the plug head and abuts against the valve core, and the connecting portion, the first access portion and the second access portion are integrally formed and present a cross-shaped structure.

3. A micro positive pressure balancing device according to claim 2, characterized in that: A conical head is arranged at one end of the valve core close to the connecting portion, and the valve core protrudes into the connecting portion through the conical head.

4. A micro positive pressure balancing device according to claim 1, characterized in that: The two air outlet holes are provided with two holes, which are parallel and spaced apart, and the two air outlet holes penetrate the plug and are connected with the furnace body.

5. A micro positive pressure balancing device according to claim 1, characterized in that: The cover body is covered on the top of the plug head so that the inner wall of the cover body contacts the outer wall of the plug head, and an air storage space is formed between the cover body and the plug head.

6. A micro-positive pressure balancing device according to claim 5, characterized in that: Both sides of the plug are provided with limiting protrusions, and the limiting protrusions are protruded from the outer wall of the plug so that the cover body stops and abuts against the limiting protrusions.

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