Pressure dividing device of high-temperature vacuum brazing furnace
By optimizing the gas flow path using flow guiding components and buffer tanks in a high-temperature vacuum brazing furnace, the problem of uneven gas pressure in existing technologies has been solved, achieving uniform gas pressure distribution and stable equipment operation, and improving the consistency of product quality.
Patent Information
- Application Number
- CN202520649533.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-08
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-04-08
AI Technical Summary
The existing pressure distribution device for high-temperature vacuum brazing furnaces is difficult to achieve uniform pressure distribution in different areas of the furnace, resulting in inconsistent quality of products in the same batch.
The system employs a flow guiding component, with the flow guiding vanes installed at an angle inside the bend. Combined with a booster pump and a buffer tank, it optimizes the gas flow path, ensures uniform gas pressure distribution, and achieves stable gas pressure regulation through the coordinated use of the flow guiding component and the buffer tank.
It improves gas flow efficiency, avoids gas turbulence and eddies, ensures uniform gas pressure distribution in the welding furnace, and improves product quality consistency and equipment operational stability.
Smart Images
Figure CN223892808U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to vacuum heat treatment equipment technical field especially relates to a high temperature vacuum brazing furnace pressure distribution device. BACKGROUND
[0002] Brazing furnace is a kind of equipment for metal brazing and bright heat treatment, it is applicable to small and medium-sized stainless steel parts (tableware, cutlery, hardware, etc.) of batch production, such as martensitic stainless steel bright quenching, tempering, austenitic stainless steel bright annealing;The existing high-temperature vacuum brazing furnace pressure distribution device mostly adopts simple pressure regulating valve and conventional pipeline layout, limited by the irrationality of pipeline layout and the complex characteristics of gas flowing in pipeline, the existing pressure distribution device is difficult to realize the uniform distribution of pressure in each area of furnace, so that the quality of the same batch of products is uneven, and the rate of defective products is increased, therefore, we launch a kind of high-temperature vacuum brazing furnace pressure distribution device. UTILITY MODEL CONTENTS
[0003] The utility model discloses a kind of high-temperature vacuum brazing furnace pressure distribution device, can effectively solve the problem in background art.
[0004] To achieve the above object, the technical scheme adopted by the utility model is as follows:
[0005] A kind of high-temperature vacuum brazing furnace pressure distribution device, including support base, the upper end of the support base is fixedly connected with the main body of brazing furnace pot, the right end middle part of the support base is fixedly connected with drain pipe, one end of the drain pipe extends into the main body of brazing furnace pot, the outer surface of the drain pipe is provided with drain valve, the outer surface of the main body of brazing furnace pot is separately fixedly connected with air pressure gauge and two lugs, and air pressure gauge is located between the front end and the rear end of two lugs, the front end of the main body of brazing furnace pot is provided with brazing furnace sealing door, the outer surface left part of the main body of brazing furnace pot is fixedly connected with pressure relief device;
[0006] The pressure relief device includes connecting pipe one, one end of the connecting pipe one is fixedly connected with electromagnetic valve piece, the other end of the electromagnetic valve piece is fixedly connected with elbow pipe, the other end of the elbow pipe is fixedly connected with booster pump, the other end of the booster pump is fixedly connected with connecting pipe two, the other end of the connecting pipe two is fixedly connected with buffer tank, the upper end left part of the buffer tank is inserted and arranged with air release pipe, the inner tube wall of the elbow pipe is fixedly connected with flow guide assembly, the other end of the connecting pipe one is fixedly connected on the outer surface left part of the main body of brazing furnace pot.
[0007] Preferably, the flow guide assembly includes a mounting bracket, the inner wall of the mounting bracket is fixedly connected with three fixed rods, the other end of the three fixed rods is fixedly connected with a connecting bracket, the outer side of the connecting bracket is fixedly connected with a plurality of flow guide vanes, and the mounting bracket is fixedly connected to the inner tube wall of the elbow pipe.
[0008] Preferably, the plurality of guide vanes are all installed at an angle of thirty degrees on the outer side of the connecting frame.
[0009] Preferably, the mounting frame is in a circular structure and is adapted to the inner pipe diameter of the elbow pipe, and the mounting frame is fixedly connected in the middle of the inner pipe wall of the elbow pipe by welding.
[0010] Preferably, the central axis of the flow guide assembly coincides with the central axis of the elbow pipe.
[0011] Preferably, the pair of lifting lugs are symmetrically welded on the outer surface of the upper part of the welding furnace tank body, and the center line of the two lifting lugs is perpendicular to the axis of the welding furnace tank body, and the welding furnace sealing door is rotationally connected to the front end of the welding furnace tank body by a hinge.
[0012] Compared with the prior art, the utility model has the following beneficial effects:
[0013] 1、In the utility model, the flow guide assembly is arranged, the guide vanes are installed at an angle of thirty degrees on the outer side of the connecting frame, the inclined guide vanes of the flow guide assembly can efficiently change the direction of airflow, reduce the airflow resistance, improve the discharge pressure efficiency, avoid the turbulence or vortex of gas in the elbow pipe, the design optimizes the gas flow path, so that the gas can flow to the booster pump more orderly, the cooperation of the booster pump and the buffer tank further ensures the uniform distribution of the furnace gas pressure of the welding furnace tank body, avoids the problem that the quality of the same batch of products is uneven due to uneven pressure, and realizes the stable adjustment of the gas pressure through the buffer tank.
[0014] 2、In the utility model, the mounting frame is tightly adapted to the inner pipe wall of the elbow pipe and is fixed by welding, so that the flow guide assembly does not displace or damage under the impact of high-speed airflow, and the operation stability of the equipment is improved. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a whole structure schematic view of the high-temperature vacuum brazing furnace pressure distribution device of the utility model;
[0016] Figure 2 It is a top view structure schematic view of the high-temperature vacuum brazing furnace pressure distribution device of the utility model;
[0017] Figure 3 It is a discharge pressure device structure schematic view of the high-temperature vacuum brazing furnace pressure distribution device of the utility model;
[0018] Figure 4 It is a flow guide assembly structure schematic view of the high-temperature vacuum brazing furnace pressure distribution device of the utility model.
[0019] In the diagram: 1. Support base; 2. Drain pipe; 3. Drain valve; 4. Pressure relief device; 5. Lifting lug; 6. Welding furnace body; 7. Pressure gauge; 8. Welding furnace sealing door; 41. Buffer tank; 42. Vent pipe; 43. Booster pump; 44. Bend; 45. Solenoid valve; 46. Flow guide assembly; 47. Connecting pipe one; 48. Connecting pipe two; 461. Connecting frame; 462. Flow guide plate; 463. Mounting frame; 464. Fixing rod. Detailed Implementation
[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0023] Please see Figures 1-4 This utility model provides a technical solution:
[0024] A pressure-reducing device for a high-temperature vacuum brazing furnace includes a support base 1. A welding furnace body 6 is fixedly connected to the upper end of the support base 1. A drain pipe 2 is inserted and fixedly connected to the middle of the right end of the support base 1. One end of the drain pipe 2 extends into the welding furnace body 6. A drain valve 3 is provided on the outer surface of the drain pipe 2. A pressure gauge 7 and two lifting lugs 5 are fixedly connected to the upper part of the outer surface of the welding furnace body 6, and the pressure gauge 7 is located between the front end and the rear end of the two lifting lugs 5. A welding furnace sealing door 8 is provided at the front end of the welding furnace body 6. A pressure relief device 4 is fixedly connected to the left part of the outer surface of the welding furnace body 6.
[0025] The lifting lugs 5 are symmetrically welded to the upper part of the outer surface of the welding furnace body 6, and the center line connecting the two lifting lugs 5 is perpendicular to the axis of the welding furnace body 6. The welding furnace sealing door 8 is rotatably connected to the front end of the welding furnace body 6 through a hinge.
[0026] In this embodiment, the pressure relief device 4 includes a first connecting pipe 47. One end of the first connecting pipe 47 is fixedly connected to a solenoid valve 45. The other end of the solenoid valve 45 is fixedly connected to a bend 44. The other end of the bend 44 is fixedly connected to a booster pump 43. The other end of the booster pump 43 is fixedly connected to a second connecting pipe 48. The other end of the second connecting pipe 48 is fixedly connected to a buffer tank 41. A vent pipe 42 is inserted through the upper left part of the buffer tank 41. A flow guiding component 46 is fixedly connected to the inner wall of the bend 44. The other end of the first connecting pipe 47 is fixedly connected to the left part of the outer surface of the welding furnace tank body 6. The central axis of the flow guiding component 46 coincides with the central axis of the bend 44.
[0027] Through the above scheme: When the pressure relief device 4 is working, if the pressure inside the welding furnace body 6 is too high and pressure relief is required, the furnace gas inside the welding furnace body 6 first flows to the solenoid valve 45 through the connecting pipe 47. The solenoid valve 45 opens according to the command of the external equipment control system, and the gas enters the bend 44. The flow guiding component 46 inside the bend 44 plays a role, and its central axis coincides with the central axis of the bend 44. The flow guiding component 46, composed of the mounting bracket 463, the fixing rod 464, the connecting bracket 461, and the flow guiding plate 462, can effectively guide the gas flow to the booster pump 43. In particular, the flow guiding plate 462 is installed at a 30-degree angle around the outside of the connecting bracket 461, which can efficiently change the airflow direction. After the gas is pressurized by the booster pump 43, it is transported to the buffer tank 41 through the connecting pipe 48. The buffer tank 41 buffers and stabilizes the gas pressure, while excess gas is discharged through the vent pipe 42 inserted at its upper left end. The beneficial effects of this pressure relief device 4 are significant. The flow guiding component 46 is made of nickel-based alloy with strong oxidation resistance, which can maintain good mechanical properties and chemical stability in high-temperature environments, ensuring long-term stable flow guiding and smooth pressure relief process. The pressure sensors installed on the inlet and outlet pipes of the booster pump 43 are connected to the external control board inside the welding furnace tank body 6 via data cables, which can monitor the inlet and outlet pressure of the booster pump 43 in real time. When the pressure is abnormal, the external control board automatically adjusts the working frequency of the booster pump 43 or issues an alarm, ensuring the stable operation of the pressure relief device 4, maintaining stable gas temperature, and improving the working efficiency of the pressure relief device 4.
[0028] In this embodiment, the flow guiding assembly 46 includes a mounting frame 463. Three fixing rods 464 are fixedly connected to the inner wall of the mounting frame 463. The other ends of the three fixing rods 464 are fixedly connected to a connecting frame 461. Several flow guiding plates 462 are fixedly connected to the outer periphery of the connecting frame 461. The mounting frame 463 is fixedly connected to the inner wall of the bend 44. Several flow guiding plates 462 are installed at a 30-degree angle on the outer periphery of the connecting frame 461. The mounting frame 463 has a circular structure and is adapted to the inner diameter of the bend 44. The mounting frame 463 is fixedly connected to the middle of the inner wall of the bend 44 by welding.
[0029] Through the above scheme: when the pressure relief device 4 is working, the flow guiding component 46 plays a key role. When the gas enters the bend 44 from the connecting pipe 47 via the solenoid valve 45, it directly impacts the flow guiding component 46. In the flow guiding component 46, the circular mounting bracket 463, which is adapted to the inner diameter of the bend 44, is firmly fixed to the middle of the inner wall of the bend 44 by welding. The three fixing rods 464 on the inner wall of the mounting bracket 463 support the connecting bracket 461. Several flow guiding plates 462, which are installed at a 30-degree angle around the outer perimeter of the connecting bracket 461, begin to function. Due to the tilt angle of the flow guiding plates 462, they generate a guiding force on the gas entering the bend 44. The flow direction of the gas is changed, allowing the gas to flow more orderly to the booster pump 43. The mounting bracket 463 is tightly fitted and welded to the bend 44, and is connected to the connecting bracket 461 through the fixing rod 464, ensuring the stability of the entire flow guiding assembly 46 within the bend 44. It can withstand the impact of high-speed airflow without displacement or damage. In terms of flow guiding effect, the flow guiding plate 462 with a special tilt angle greatly optimizes the gas flow direction, avoiding turbulence, eddies, and other unfavorable conditions for pressure discharge within the bend 44, improving pressure discharge efficiency, ensuring the stable operation of the pressure discharge device 4 as a whole, and providing reliable pressure regulation support for the pressure distribution of the high-temperature vacuum brazing furnace.
[0030] It should be noted that this utility model is a pressure distribution device for a high-temperature vacuum brazing furnace. The support base 1 supports the main body 6 of the furnace. During the brazing process, if the pressure inside the furnace is too high, the pressure relief device 4 connected to the left side of the outer surface of the main body 6 of the furnace starts to work. The gas inside the furnace flows through the connecting pipe 47 to the solenoid valve 45. The solenoid valve 45 opens according to the control system command, and the gas enters the bend 44. The flow guiding assembly 46, which consists of the mounting bracket 463, the fixing rod 464, the connecting bracket 461, and the guide plate 462, inside the bend 44, guides the gas to the booster pump 43. The guide plate 462 is installed at a 30-degree angle around the outside of the connecting bracket 461, which can effectively change the airflow direction. The booster pump 43... 3. After the gas is pressurized, it is transported to the buffer tank 41 through the connecting pipe 48. The buffer tank 41 plays a role in stabilizing the gas pressure. Excess gas is discharged through the vent pipe 42 on the upper left side. At the same time, the gas pressure in the furnace can be monitored in real time by the gas pressure gauge 7 on the upper part of the outer surface of the welding furnace tank body 6. When condensate is generated in the furnace, it will collect at the bottom of the welding furnace tank body 6 under the action of gravity and can be discharged through the drain pipe 2 inserted and fixed in the middle of the right end of the support base 1. The drain valve 3 controls the drainage process. When it is necessary to move the equipment, it can be lifted by the lifting lugs 5 symmetrically welded to the upper part of the outer surface of the welding furnace tank body 6. The welding furnace sealing door 8 is connected to the front end of the welding furnace tank body 6 by a hinge, which facilitates the opening and closing of the furnace body.
[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A pressure-dividing device for a high-temperature vacuum brazing furnace, comprising a support base (1), characterized in that: The upper end of the support base (1) is fixedly connected to the welding furnace body (6). The middle right end of the support base (1) is fixedly connected to the drain pipe (2). One end of the drain pipe (2) extends into the welding furnace body (6). The outer surface of the drain pipe (2) is provided with a drain valve (3). The outer surface of the welding furnace body (6) is fixedly connected to a pressure gauge (7) and two lifting lugs (5). The pressure gauge (7) is located between the front end and the rear end of the two lifting lugs (5). The front end of the welding furnace body (6) is provided with a welding furnace sealing door (8). The left side of the outer surface of the welding furnace body (6) is fixedly connected to a pressure relief device (4). The pressure relief device (4) includes a first connecting pipe (47), one end of which is fixedly connected to a solenoid valve (45), the other end of which is fixedly connected to a bend (44), the other end of which is fixedly connected to a booster pump (43), the other end of which is fixedly connected to a second connecting pipe (48), the other end of which is fixedly connected to a buffer tank (41), a vent pipe (42) is inserted through the upper left part of the buffer tank (41), a flow guide component (46) is fixedly connected to the inner wall of the bend (44), and the other end of the first connecting pipe (47) is fixedly connected to the left side of the outer surface of the welding furnace body (6).
2. The pressure-dividing device for a high-temperature vacuum brazing furnace according to claim 1, characterized in that: The flow guiding assembly (46) includes a mounting bracket (463), the inner wall of which is fixedly connected with three fixing rods (464), the other ends of which are fixedly connected with a connecting bracket (461), and a plurality of flow guiding plates (462) are fixedly connected to the outer periphery of the connecting bracket (461). The mounting bracket (463) is fixedly connected to the inner wall of the bend (44).
3. The pressure-dividing device for a high-temperature vacuum brazing furnace according to claim 2, characterized in that: Several of the aforementioned guide vanes (462) are installed at a 30-degree angle around the outer perimeter of the connecting frame (461).
4. The pressure-dividing device for a high-temperature vacuum brazing furnace according to claim 2, characterized in that: The mounting bracket (463) has a circular structure and is adapted to the inner diameter of the bend (44). The mounting bracket (463) is fixedly connected to the middle of the inner wall of the bend (44) by welding.
5. The pressure-dividing device for a high-temperature vacuum brazing furnace according to claim 1, characterized in that: The central axis of the flow guiding assembly (46) coincides with the central axis of the bend (44).
6. The pressure-dividing device for a high-temperature vacuum brazing furnace according to claim 1, characterized in that: The lifting lugs (5) are symmetrically welded to the upper part of the outer surface of the welding furnace body (6), and the center line connecting the two lifting lugs (5) is perpendicular to the axis of the welding furnace body (6). The welding furnace sealing door (8) is rotatably connected to the front end of the welding furnace body (6) through a hinge.