CN209893944U - High-temperature heating furnace for molding sand test - Google Patents

Abstract

The utility model discloses a high temperature heating furnace of molding sand test, including furnace body and slide rail, the slide rail slides can be followed to the furnace body, the furnace body includes oven, inside lining, heating rod, stopper rod and temperature sensor, the oven forms the surface at the inside lining, the inside level of forming of inside lining is arranged, the cylindric heating chamber, the up end shape in heating chamber forms a jack, the lower extreme shape in heating chamber forms out the hot hole, many heating rods set up in heating chamber, the stopper rod wears to establish the jack and follows vertical direction activity in order selectively to open and close out the hot hole, the heat that the heating rod produced is through going out the hot hole release, temperature sensor's response end is located heating chamber. The furnace body can move along the slide rail, and the sample is not heated until the temperature is preset, so that the performance of the sample is not influenced; the heating cavity is cylindrical, so that the effects of better heat accumulation and uniform temperature field are achieved.

Description

High-temperature heating furnace for molding sand test

Technical Field

The utility model relates to a molding sand testing arrangement, concretely relates to high temperature heating furnace of molding sand test.

Background

According to different experimental temperatures, the properties of the molding sand can be divided into normal temperature property (room temperature), thermal property (30-400 ℃), high temperature property (800-1600 ℃) and property under a pouring condition, and the high temperature property of the molding sand refers to the property under the high temperature condition and mainly comprises compressive strength, residual strength, thermal expansion, thermal deformation, impact load expansion and the like.

The molding sand performance is 800-1600 ℃, and the heating efficiency of the heating furnace often cannot meet the requirement.

The existing heating furnace generally adopts the mode that a sample is integrally plugged into a furnace body, so that the sample is integrally heated, and the measured data cannot well reflect the high-temperature performance of molding sand.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a high temperature heating furnace of molding sand test.

The utility model provides a high temperature heating furnace of molding sand test, includes furnace body and slide rail, the furnace body can be followed the slide rail slides, the furnace body includes oven, inside lining, heating rod, stopper rod and temperature sensor, the oven forms the surface of inside lining, the inside of inside lining forms horizontal arrangement, cylindric heating chamber, the up end in heating chamber forms a jack, the lower terminal surface in heating chamber forms out hot hole, many the heating rod sets up in the heating chamber, the stopper rod wears to establish the jack and follows vertical direction activity in order to open selectively and close out hot hole, the heat process that the heating rod produced go out hot hole release, temperature sensor's inductive end is located in the heating chamber.

The utility model has the advantages that: the sample is placed below the heat outlet hole, so that the single-side heating of the sample is realized, and the performance of the sample can be accurately measured; the furnace body can move along the slide rail, and the sample is not heated until the temperature is preset, so that the performance of the sample is not influenced; the heating cavity is cylindrical, so that the effects of heat collection and uniform temperature field are better.

Drawings

FIG. 1 is a schematic view showing the structure of a high-temperature heating furnace for sand testing.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

Referring to fig. 1, a high temperature heating furnace 100 for sand testing includes a furnace body 1 and a slide rail 2, wherein the furnace body 1 can slide along the slide rail 2, so as to be suitable for heating at different positions.

For example, the sample to be heated may be fixed to one end of the slide rail 2, the furnace body 1 is located at the other end of the slide rail 2 before being heated to the predetermined temperature, and after the furnace body 1 is heated to the predetermined temperature, the furnace body 1 is pushed to move along the slide rail 2 to the upper side of the sample to be heated. The sample is not heated until the sample is heated to the preset temperature, and the performance of the sample is not influenced.

The bottom of the furnace body 1 is provided with a slide block 3 which can slide along the guide rail 2.

Further, the slide rail 2 has two that the interval set up, and the bottom of furnace body 1 forms two link, and a slider 3 is respectively connected to the link.

Preferably, the furnace body has a bilateral symmetry structure, and the centers of the intervals of the slide rails 2 and the center of the furnace body 1 are positioned on the same vertical plane.

With continued reference to fig. 1, the furnace body 1 includes a furnace wall 10, an inner lining 11, heating rods 12, a stopper 13 and a temperature sensor, the furnace wall 10 is formed on the outer surface of the inner lining 11, a horizontally arranged cylindrical heating cavity 111 is formed inside the inner lining 11, an insertion hole is formed on the upper end surface of the heating cavity 111, a heat outlet 112 is formed on the lower end surface of the heating cavity 111, a plurality of heating rods 12 are disposed in the heating cavity 111, the stopper 12 penetrates through the insertion hole and is movable in the vertical direction to selectively open and close the heat outlet 112, heat generated by the heating rods 12 is released through the heat outlet 112, and a sensing end of the temperature sensor is located in the heating cavity 111.

It should be noted that the heating cavity 111 is a horizontally arranged cylinder, so that the heating cavity 111 forms a circular longitudinal section, thereby generating a heat collecting effect and improving the heating efficiency.

Further, the inner wall of the heating chamber 111 is a smooth mirror surface, thereby better reflecting light energy and heat energy.

The material of the liner 11 is asbestos, and the heating rod 12 is a silicon carbide rod.

Further, the number of the heating rods 12 is four, and every two heating rods are respectively arranged on the left side and the right side of the stopper rod 13 along the horizontal direction.

Preferably, the four heating rods 12 are equidistant from the inner wall of the heating chamber 111.

Further, the diameter of the single heating rod 12 is 14mm, and the length is 400 mm.

Further, the size of the heat outlet 112 is 30 (+ -5) mm × 20 (+ -5) mm. Preferably, the size of the heat exit holes is 30mm x 20mm, at which the heat can be best concentrated on the sample.

The upper end of the stopper rod 12 is connected to a lifting mechanism that controls the stopper rod 12 to move in the vertical direction to open and close the heat outlet hole 112.

The lifting mechanism comprises an air cylinder 15, a jacking cross beam 16 and a fixing piece 17, wherein the air cylinder 15 is fixed on the furnace wall 10, the output end of the air cylinder 15 is connected with the rear end of the jacking cross beam 16, the fixing piece 17 is arranged at the front end of the jacking cross beam 16, and the fixing piece 17 is fixedly connected with the upper end of the stopper rod 12.

The fixing member 17 includes a flange fixing cap and a locking screw, and the flange fixing cap is fastened to the upper end of the stopper rod 12 and locked by the locking screw.

Further, the temperature sensor is a thermocouple inserted into the furnace wall 10 and the lining 11.

The utility model discloses a theory of operation does: at the initial stage of the heating stage, the furnace body 1 is moved to one side far away from the sample to be heated along the slide rail 2, the stopper rod 12 closes the heat outlet 112 at the moment, the heating rod 12 is electrified and heated, the thermocouple senses the internal temperature of the heating cavity 111, after the heating is carried out to the target temperature, the furnace body 1 is moved to the upper part of the sample, and the air cylinder 15 is controlled to enable the stopper rod 12 to open the heat outlet 112 at the moment.

The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (6)

1. The utility model provides a high temperature heating furnace of molding sand test which characterized in that, includes furnace body and slide rail, the furnace body can be followed the slide rail slides, the furnace body includes oven, inside lining, heating rod, stopper rod and temperature sensor, the oven forms the surface of inside lining, the inside horizontal arrangement, cylindric heating chamber that forms of inside lining, the up end in heating chamber forms a jack, the lower terminal surface in heating chamber forms out the hot hole, and is many the heating rod sets up in the heating chamber, the stopper rod wears to establish the jack and follows vertical direction activity in order to open selectively and close out the hot hole, the heat that the heating rod produced passes through it releases to go out the hot hole, temperature sensor's inductive end is located in the heating chamber.

2. The high-temperature heating furnace for sand testing as claimed in claim 1, wherein said heating rods are four in number, and are arranged in pairs horizontally on the left and right sides of said stopper rod, respectively.

3. The high-temperature heating furnace for sand testing according to claim 1 or 2, wherein the size of the heat-emitting holes is 30(± 5) mm x 20(± 5) mm.

4. The high-temperature heating furnace for sand testing as claimed in claim 3, wherein a lifting mechanism is connected to the upper end of the stopper rod, and the lifting mechanism controls the stopper rod to move in the vertical direction to open and close the heat outlet holes.

5. The high-temperature heating furnace for sand testing as claimed in claim 4, wherein said lifting mechanism comprises a cylinder, a lifting beam and a fixing member, said cylinder is fixed on said furnace wall, the output end of said cylinder is connected to the rear end of said lifting beam, said fixing member is provided at the front end of said lifting beam, and said fixing member is fixedly connected to the upper end of said stopper rod.

6. The sand-testing high-temperature heating furnace of claim 5, wherein the fixing member includes a flange fixing cap and a locking screw, the flange fixing cap being snap-coupled to the upper end of the stopper rod and locked by the locking screw.