Atmosphere replacement device of industrial kiln

Abstract

The utility model discloses an atmosphere replacement device of an industrial kiln. The atmosphere replacement device comprises a push plate guide mechanism and a push plate driving mechanism, the push plate guide mechanism comprises a guide sliding plate and a base plate, the base plate is laid on the box bottom of the replacement box, and the guide sliding plate is installed on the base plate and extends towards the push plate track along the switching channel; a push rod passing hole is formed in the outer side of a box body of the replacement box, the push plate driving mechanism comprises a driving support, a driving motor, a transmission lead screw, a transmission seat and a push rod, the driving support is provided with a push rod positioning sleeve, and an airtight sleeve is installed between the push rod positioning sleeve and the push plate passing hole. The driving motor, the transmission lead screw and the push rod are all installed on the driving support, the transmission base is installed on the transmission lead screw, the tail end of the push rod is fixed to the transmission base, and the top end of the push rod enters the replacement box. By means of the mode, the gas consumption of the replacement action can be reduced, and the operation cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of sintering equipment, in particular to an atmosphere replacement device for an industrial kiln. Background Art

[0002] An industrial kiln is a special equipment that can continuously heat and sinter products at high temperatures in a specific atmosphere. It is widely used in the production of electronics, chemicals, construction, etc., and is especially suitable for the processing of some precision electronic products. For example, when sintering alumina base at high temperature, it is necessary to sinter it in a high hydrogen atmosphere. During the sintering process, it is necessary to strictly prevent air from entering the furnace body, otherwise it will seriously affect the product quality. Therefore, in order to improve the quality stability of sintered products, a special replacement chamber will be set up in the kiln. Before the product to be processed enters the main furnace, the atmosphere of the product to be heated is replaced in the replacement chamber, and then the product is pushed into the furnace for sintering in the replaced atmosphere. In order to reduce the pollution of the replacement chamber by the outside air during this process, the current traditional methods such as the attached Figure 6 As shown in the figure, a special trolley is set between the replacement chamber and the main push box, and the push plate driving mechanism is connected to the trolley from the bottom of the box body, driving the trolley to reciprocate along the corresponding track, pushing the push plate from the replacement chamber into the main push box. On the one hand, this method requires the trolley to occupy a certain space, resulting in a large amount of replacement gas in the replacement chamber. On the other hand, a large gap connecting to the outside world will appear at the connection position between the driving mechanism and the trolley. This requires a higher positive pressure environment in the replacement chamber to ensure that no external miscellaneous gas is introduced into the main push box, further increasing the amount of inert gas in the replacement chamber. Utility Model Content

[0003] The utility model mainly solves the technical problem of providing an atmosphere replacement device for an industrial furnace, which can reduce the gas consumption during replacement and improve the stability of product quality.

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide an atmosphere replacement device for an industrial kiln, the industrial kiln includes a replacement box, a main push box and a conversion channel connected between the replacement box and the main push box, the conversion channel is equipped with an isolation door, and the atmosphere replacement device of the industrial kiln includes a push plate guiding mechanism and a push plate driving mechanism; the push plate guiding mechanism includes a guide slide plate and a pad plate, the pad plate is laid on the bottom of the replacement box, the guide slide plate is installed on the pad plate, the plate body of the guide slide plate extends from the push plate pushing position in the replacement box along the conversion channel to the push plate track in the main push box until it approaches the position of the isolation door, and the upper surface of the push plate track is on the same horizontal plane as the upper surface of the guide slide plate; the push plate driving mechanism is arranged on the outer side of the replacement box, and the outer side of the box body of the replacement box is provided with a push plate at the same level as the push plate at The push rod passing hole that matches the position on the guide slide plate, and the push plate driving mechanism comprises a driving bracket, a driving motor, a transmission screw, a transmission seat and a push rod, and the driving bracket is equipped with a push rod positioning sleeve that coincides with the center line of the push rod passing hole on the side facing the replacement box, and an airtight sleeve is installed between the push rod positioning sleeve and the push plate passing hole, and the driving motor, transmission screw and push rod are all installed on the driving bracket, and the power output end of the driving motor is connected to one end of the transmission screw through a transmission belt, and the transmission seat is installed on the transmission screw and can reciprocate in the horizontal direction under the drive of the transmission screw, and the tail end of the push rod is fixed on the transmission seat, and the top end of the push rod continuously passes through the push rod positioning sleeve, the airtight sleeve and the push rod passing hole to enter the replacement box, so as to push the push plate to pass through the conversion channel and enter the push plate track in the main push box.

[0005] In a preferred embodiment of the present invention, the distance from the front end of the guide slide plate to the push plate track in the main push box does not exceed one third of the width of the push plate.

[0006] In a preferred embodiment of the utility model, the push rod passage hole and the push rod positioning sleeve are connected to the airtight sleeve via flanges, a first sealing gasket is installed between the push rod passage hole and the flange surface of the airtight sleeve, and a second sealing gasket is installed between the push rod positioning sleeve and the flange surface of the airtight sleeve.

[0007] In a preferred embodiment of the present invention, the airtight sleeve is a stainless steel telescopic sleeve.

[0008] In a preferred embodiment of the utility model, a copper sleeve with a diameter matching the diameter of the push rod is inlaid on the inner side of the push rod positioning sleeve, and a plurality of sealing rings are installed in the copper sleeve.

[0009] In a preferred embodiment of the present invention, a detachable push head is installed at the end of the push rod, and rollers are symmetrically installed on both sides of the rod body behind the push head.

[0010] The beneficial effects of the utility model are as follows: the utility model further optimizes the structure of the sintering atmosphere replacement device on the basis of existing products, and simplifies the traditional cart push to direct push by a push rod. This, on the one hand, significantly reduces the interface area between the replacement box and the drive mechanism, reduces the chance of outside air entering the box body, reduces the impact of the outside environment on the sintering environment in the furnace, and improves the quality stability of the final product. On the other hand, due to the direct push by the push rod, the space occupied by the cart is omitted in the design of the replacement box body, the gas consumption during replacement is significantly reduced, and the operating cost during the continuous sintering process is significantly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the connection structure of a preferred embodiment of the utility model;

[0012] Figure 2 yes Figure 1 A is an enlarged schematic diagram of the local structure at center A;

[0013] Figure 3 yes Figure 1 A magnified schematic diagram of the local structure at B in the middle;

[0014] Figure 4 is a schematic structural diagram of the push plate driving mechanism in the embodiment;

[0015] Figure 5 yes Figure 4 An enlarged schematic diagram of the structure of the middle push rod end;

[0016] Figure 6 It is a schematic diagram of the traditional industrial kiln replacement structure;

[0017] The markings of the components in the accompanying drawings are as follows:

[0018] 1. Push plate, 2. Replacement box, 3. Main push box, 4. Conversion channel, 5. Isolation door, 6. Push plate driving mechanism, 7. Airtight casing, 8. First sealing gasket, 9. Second sealing gasket, 10. Push plate track, 11. Trolley, 12. Trolley track;

[0019] 201. Push plate through hole, 202. Guide slide plate, 203. Pad plate;

[0020] 601. driving bracket, 602. driving motor, 603. driving screw, 604. driving seat, 605. pushing rod, 606. pushing rod positioning sleeve, 607. copper sleeve, 608. sealing ring, 609. pushing head, 6010. roller. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0022] See also Figures 1 to 5 , the utility model embodiment includes:

[0023] An atmosphere replacement device for an industrial kiln, the industrial kiln comprising a replacement box 2, a main push box 3 and a conversion channel 4 connected between the replacement box 2 and the main push box 3, the conversion channel 4 being provided with an isolation door 5, the atmosphere replacement device for the industrial kiln comprising a push plate guide mechanism and a push plate drive mechanism 6; the push plate guide mechanism comprising a guide slide 202 and a pad 203, the pad 203 being laid on the bottom of the replacement box 2, the guide slide 202 being installed on the pad 203, the guide slide The plate body 202 extends from the push plate pushing position in the replacement box 2 along the conversion channel 4 to the push plate track 10 in the main push box 3 until it is close to the isolation door 5. The upper surface of the push plate track 10 is on the same horizontal plane as the upper surface of the guide slide 202; the push plate driving mechanism 6 is arranged on the outside of the replacement box 2, and the outer side of the box body of the replacement box 2 is provided with a push rod through hole 201 that matches the position of the push plate 1 on the guide slide 202. The push plate driving mechanism 6 includes a driving The driving bracket 601, the driving motor 602, the transmission screw 603, the transmission seat 604 and the push rod 605, the driving bracket 601 is installed with a push rod positioning sleeve 606 coinciding with the center line of the push rod through hole 201 on the side facing the replacement box 2, and an airtight sleeve 7 is installed between the push rod positioning sleeve 606 and the push plate through hole 201, the driving motor 602, the transmission screw 603 and the push rod 605 are all installed on the driving bracket 601, and the power output end of the driving motor 602 is connected to the One end of the transmission screw 603 is connected by a transmission belt, and the transmission seat 604 is installed on the transmission screw 603. It can reciprocate in the horizontal direction under the drive of the transmission screw 603. The tail end of the push rod 605 is fixed on the transmission seat 604. The top end of the push rod 605 continuously passes through the push rod positioning sleeve 606, the airtight sleeve 7 and the push rod through hole 201 and enters the replacement box 2, and can push the push plate 1 through the conversion channel 4 and enter the push plate track 10 in the main push box 3.

[0024] The distance from the front end of the guide slide 202 to the push plate track 10 in the main push box 3 does not exceed one third of the width of the push plate 1, and is generally 1 / 4 of the width of the push plate 1, which is slightly larger than the width of the middle isolation door 5. The purpose of this design is that in order to prevent the push plate 1 from bringing in foreign air during the transfer process, an isolation door 5 is set in the middle of the conversion channel 4, which is only opened when the push plate 1 enters the main push box 3. This results in the guide slide 202 not being directly connected to the push plate track 10 in the main push box 3. In this way, when the push plate 1 enters the push plate track 10, it needs to cross a suspended distance. If this suspended distance is too large, the center of gravity of the push plate 1 will be suspended in the air during the movement, and the front edge will tilt downward and get stuck on the isolation door 5.

[0025] The push rod through hole 201 and the push rod positioning sleeve 606 are all connected to the airtight sleeve 7 through flanges, a first sealing gasket 8 is installed between the push rod through hole 201 and the flange surface of the airtight sleeve 7, and a second sealing gasket 9 is installed between the push rod positioning sleeve 606 and the flange surface of the airtight sleeve 7. The push rod positioning sleeve 606 is inlaid with a copper sleeve 607 whose diameter matches the diameter of the push rod 605 on the inner side, and two sealing rings 608 are also installed in the copper sleeve 607. In actual application, the push rod positioning sleeve 606 is generally made of cast iron with high hardness, so a copper sleeve 607 is installed inside to reduce the direct friction between the push rod positioning sleeve 606 and the push rod 605 shaft, and a sealing ring 608 is installed in the copper sleeve 607. In this way, during the forward and backward movement of the push rod 605, the section from the push rod through hole 201 to the airtight sleeve 7 and the push rod positioning sleeve 606 becomes a closed space. The push rod 605 remains airtight during the movement, preventing external gas from entering the furnace, thereby improving the quality stability of the sintered product.

[0026] The airtight sleeve 7 is a stainless steel telescopic sleeve. The reason for using the stainless steel telescopic sleeve is that during the high-temperature sintering process, the body of the replacement box 2 will also expand and contract accordingly, causing the connection position of the airtight sleeve 7 to be damaged due to the cyclical and drastic changes in stress. After using this stainless steel telescopic sleeve, the destructive effect of the thermal expansion and contraction process of the body of the replacement box 2 on the connection position can be eliminated.

[0027] The end of the push rod 605 is installed with a detachable push head 609, and rollers 6010 are symmetrically installed on both sides of the rod body behind the push head 609. The detachable push head 609 installed at the end of the push rod 605 can prevent the push rod 605 from deforming after long-term use. If a problem occurs, it can be repaired by quick replacement. The reason for installing the roller 6010 on the rod body is to improve the stability of the push rod 605 during the pushing process. The reason is that there is generally a distance of 2 to 5 mm between the push rod through hole 201 and the upper surface of the guide slide 202 to prevent the push rod 605 from rubbing against the surface of the guide slide 201 when the push rod 605 is pushed. However, after a period of actual use, the front end of the push rod 605 tends to bend downward under the action of gravity. In this way, the rod body collides with the push plate through hole 201 during the pushing process, resulting in obvious vibration of the rod head. After the roller 6010 is installed on the rod body behind the push head 605, the influence of gravity on the push rod 605 is offset, so that the push rod 605 always remains horizontal during movement and will not collide with the push plate through hole 201. In this way, whether the push rod 605 moves forward or backward, the rod head will not produce obvious vibration, which significantly improves the stability of the forward pushing action.

[0028] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An atmosphere replacement device for an industrial kiln, the industrial kiln comprising a replacement box, a main push box and a conversion channel connected between the replacement box and the main push box, the conversion channel being provided with an isolation door, characterized in that: The atmosphere replacement device of the industrial kiln comprises a push plate guiding mechanism and a push plate driving mechanism; The push plate guiding mechanism comprises a guide slide plate and a pad plate, wherein the pad plate is laid on the bottom of the replacement box, the guide slide plate is mounted on the pad plate, the plate body of the guide slide plate extends from the push plate pushing position in the replacement box along the conversion channel to the push plate track in the main push box until it approaches the isolation door, and the upper surface of the push plate track is on the same horizontal plane as the upper surface of the guide slide plate; The push plate driving mechanism is arranged on the outside of the replacement box, and the box body of the replacement box is provided with a push rod passing hole matching the position of the push plate on the guide slide. The push plate driving mechanism comprises a driving bracket, a driving motor, a transmission screw, a transmission seat and a push rod, and the driving bracket is installed with a push rod positioning sleeve that coincides with the center line of the push rod passing hole on one side of the replacement box facing the replacement box, and an air-tight sleeve is installed between the push rod positioning sleeve and the push plate passing hole, and the driving motor, the transmission screw and the push rod are all installed on the driving bracket. The power output end of the driving motor is connected to one end of the transmission screw through a transmission belt, and the transmission seat is installed on the transmission screw and can reciprocate in the horizontal direction under the drive of the transmission screw. The tail end of the push rod is fixed on the transmission seat, and the top end of the push rod continuously passes through the push rod positioning sleeve, the air-tight sleeve and the push rod passing hole and then enters the replacement box, so as to push the push plate through the conversion channel and enter the push plate track in the main push box.

2. The atmosphere replacement device for an industrial furnace according to claim 1, characterized in that: The distance from the front end of the guide slide plate to the push plate track in the main push box does not exceed one third of the width of the push plate.

3. The atmosphere replacement device for an industrial furnace according to claim 1, characterized in that: The push rod through hole and the push rod positioning sleeve are all connected to the airtight sleeve through flanges. A first sealing gasket is installed between the push rod through hole and the flange surface of the airtight sleeve, and a second sealing gasket is installed between the push rod positioning sleeve and the flange surface of the airtight sleeve.

4. The atmosphere replacement device for an industrial furnace according to claim 1, characterized in that: The airtight sleeve is a stainless steel telescopic sleeve.

5. The atmosphere replacement device for an industrial furnace according to claim 1, characterized in that: The inner side of the push rod positioning sleeve is inlaid with a copper sleeve with a diameter matching the diameter of the push rod, and a plurality of sealing rings are also installed in the copper sleeve.

6. The atmosphere replacement device for an industrial furnace according to claim 1, characterized in that: The end of the push rod is equipped with a detachable push head, and rollers are symmetrically installed on both sides of the rod body behind the push head.

Images