Mold filling and pressure measuring system of low-pressure machine holding furnace

Abstract

The utility model discloses a mold filling and pressure measuring system of a low-pressure machine holding furnace, which comprises a furnace body, a hearth arranged in an inner cavity of the furnace body, a liquid rising pipe arranged in the hearth and a heating rod arranged on the furnace body, and pressure measuring points used for measuring internal air pressure are arranged on the furnace body and the hearth. According to the utility model, a plurality of pressure measuring points are arranged, errors of detected data caused by blockage of a single pressure measuring point can be prevented, meanwhile, the plurality of pressure measuring points are arranged, so that the distance of a measuring loop of one pressure measuring point is relatively short, the reaction speed is shortened, and the precision of measured data is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of casting, in particular to a mold filling and pressure measuring system of a low-pressure machine holding furnace. Background Art

[0002] A holding furnace is a type of instrument designed to overcome the disadvantages of the material surface being ignited and burned at high temperature and then suddenly exposed to the atmosphere after leaving the igniter, which causes the red-hot material surface to cool rapidly. As a result, the glass content in the mineral composition of the surface sintered ore increases significantly and the strength decreases. The air pressure inside a common holding furnace needs to be controlled manually, because when the furnace is under positive pressure, the combustion state in the furnace can be controlled, the degree of mixing of combustible materials and oxygen in the furnace chamber can be increased, the combustion can be more complete, the efficiency of the furnace can be improved, and the content of pollutant emissions can be reduced. When the furnace is under negative pressure, air will enter the furnace chamber through the gaps in the furnace, resulting in secondary combustion reactions and expansion effects, resulting in incomplete combustion, and at the same time, some unnecessary heat loss will be increased, reducing the efficiency of the furnace. The negative pressure in the furnace will introduce a large amount of oxygen, causing the combustion process to lose control, resulting in high-temperature combustion and explosion hazards.

[0003] To sum up, the existing insulation furnace is designed to connect the pressure measuring point of the pressure sensor to facilitate the staff to observe the internal air pressure of the insulation furnace. However, the existing insulation furnace is designed with only one pressure measuring point. When the pressure measuring point is blocked, the value measured by the pressure sensor will be erroneous, resulting in unnecessary consumption and safety risks.

[0004] Based on the above reasons, it is necessary to improve the existing technology. Utility Model Content

[0005] 1. Technical Problems to be Solved

[0006] The present invention aims at the above-mentioned defects in the prior art and proposes a filling and pressure measuring system for a low-pressure machine holding furnace to solve the problems raised in the above-mentioned background technology.

[0007] Technical Solution

[0008] In order to solve the above technical problems, the utility model provides a filling and pressure measuring system for a low-pressure machine insulation furnace, comprising a furnace body, a furnace chamber arranged in the internal cavity of the furnace body, a riser pipe arranged in the furnace chamber and a heating rod arranged on the furnace body, the furnace body and the furnace chamber are provided with pressure measuring points for measuring the internal air pressure thereof, multiple pressure measuring points are connected to pressure measuring lines, the other end of the pressure measuring line is connected to a fixed seat, and the fixed seat is provided with an electric wire connected to a pressure sensor.

[0009] In the above technical solution, the furnace body includes wiring compartments arranged on both sides thereof, the wiring compartments are provided with through holes, and both ends of the heating rod pass through the through holes on both sides respectively and are arranged in the internal cavity of the wiring compartments.

[0010] In the above technical solution, a flange is provided around the top end of the riser tube, and a groove is provided at the top end of the furnace to cooperate with the flange.

[0011] Beneficial effects

[0012] Compared with the prior art, the present invention has the following beneficial effects: the present invention is provided with multiple pressure measuring points, which can prevent a single pressure measuring point from being blocked and causing errors in the detected data. At the same time, setting multiple pressure measuring points can make the measurement loop distance of one of the pressure measuring points shorter, shorten the reaction speed, and improve the accuracy of the measured data. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the principle of the present utility model.

[0014] Figure 2 This is a side structural diagram of the furnace body of the present invention.

[0015] Figure 3 This is a schematic diagram of the front view structure of the furnace body of the present invention.

[0016] In the figure: 1 is the furnace body, 2 is the furnace, 3 is the rising pipe, 4 is the heating rod, 5 is the pressure measuring point, 6 is the pressure sensor, 10 is the wiring compartment, 11 is the through hole, 20 is the groove, 30 is the flange, 50 is the pressure measuring line, 51 is the fixing seat, and 60 is the wire. DETAILED DESCRIPTION

[0017] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0018] See also Figure 1-3 The utility model provides a filling and pressure measuring system for a low-pressure machine insulation furnace, comprising a furnace body 1, a furnace chamber 2 arranged in an internal cavity of the furnace body 1, a riser pipe 3 arranged in the furnace chamber 2, and a heating rod 4 arranged on the furnace body 1. Pressure measuring points 5 for measuring the internal air pressure are provided on the furnace body 1 and the furnace chamber 2. A plurality of pressure measuring points 5 are connected to pressure measuring lines 50, the other end of the pressure measuring line 50 is connected to a fixing seat 51, and a wire 60 connected to a pressure sensor 6 is provided on the fixing seat 51.

[0019] In the above structure, multiple pressure measuring points are set and the position of each pressure measuring point is different. The distance of the pressure measuring point loop is shortened by the position distance, thereby reducing the time of the measurement loop, thereby improving the reaction speed. At the same time, the use of multiple pressure measuring points can ensure that when one or more pressure measuring points less than the total number are blocked, the parameters of the final measured air pressure will not produce errors, misleading the staff to adjust the wrong air pressure in the furnace, resulting in the air pressure in the furnace being too low, causing incomplete combustion or out-of-control of the combustion process, resulting in safety problems.

[0020] Specifically, the furnace body 1 includes a wiring compartment 10 arranged on both sides thereof, and a through hole 11 is provided on the wiring compartment 10. The two ends of the heating rod 4 pass through the through holes 11 on both sides and are arranged in the internal cavity of the wiring compartment 10. Using the through holes to install the heating rod can achieve the effect of quick replacement and multiple replacement, effectively saving maintenance time.

[0021] Specifically, a flange 30 is provided around the top of the riser tube 3, and a groove 20 is provided at the top of the furnace 2 for use with the flange 30. The cooperation between the flange and the groove can clamp the riser tube and limit the position of the riser tube.

[0022] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A filling and pressure measuring system for a low-pressure machine holding furnace, comprising a furnace body (1), a furnace chamber (2) disposed in an internal cavity of the furnace body (1), a liquid riser (3) disposed in the furnace chamber (2), and a heating rod (4) disposed on the furnace body (1), characterized in that: Pressure measuring points (5) for measuring the internal air pressure are provided on the furnace body (1) and the furnace (2), and a plurality of pressure measuring points (5) are connected to pressure measuring lines (50). The other end of the pressure measuring line (50) is connected to a fixing seat (51), and the fixing seat (51) is provided with an electric wire (60) connected to a pressure sensor (6).

2. The filling and pressure measuring system for a low-pressure holding furnace according to claim 1, characterized in that: The furnace body (1) comprises wiring compartments (10) arranged on both sides thereof, the wiring compartments (10) being provided with through holes (11), and both ends of the heating rod (4) respectively passing through the through holes (11) on both sides and being arranged in the internal cavity of the wiring compartments (10).

3. The filling and pressure measuring system for a low-pressure machine holding furnace according to claim 1, characterized in that: The top end of the riser pipe (3) is provided with a flange (30), and the top end of the furnace (2) is provided with a groove (20) for use with the flange (30).

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