Sand sealing mechanism for intermittent trolley heat treatment furnace

Abstract

The utility model discloses a sand sealing mechanism for an intermittent trolley heat treatment furnace, which comprises a heat treatment furnace body and a trolley, the heat treatment furnace body is provided with at least one group of furnace doors and furnace walls, furnace body sand sealing cutters are fixedly arranged at the bottoms of the furnace doors and the furnace walls, and trolley sand sealing cutters are fixedly arranged on the periphery of the bottom of the trolley. A sand sealing groove is formed in the periphery of the trolley in a lifting mode, and the furnace body sand sealing cutter and the trolley sand sealing cutter can be inserted into the sand sealing groove through the lifting action of the sand sealing groove. The sand sealing mechanism for the intermittent trolley heat treatment furnace has the advantages of being easy to overhaul and high in use flexibility, and the production efficiency can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of smelting equipment, in particular to a sand sealing mechanism for an intermittent trolley heat treatment furnace. Background Art

[0002] The intermittent trolley heat treatment furnace is a cyclic operation furnace with no zoned furnace chamber. The bottom of the trolley heat treatment furnace is a movable trolley. Before heating, the trolley is loaded outside the furnace, and the heated parts are placed on a special pad. The trolley is then pulled into the furnace by a traction mechanism for heating. After heating, the trolley is pulled out of the furnace by the traction mechanism to unload the parts. The heated workpiece is then lifted to the forging equipment by a crane for processing. The sand sealing device of the existing intermittent trolley heat treatment furnace generally adopts a sand sealing groove set on the inner wall of the furnace body. When the furnace door is closed, the sand sealing knife of the furnace door is inserted into the sand sealing groove for sealing. Due to the poor strength of the sand sealing groove itself, the sand sealing groove is easily damaged after a period of use. When replacing the sand sealing groove, the staff needs to wait for the temperature inside the furnace body to drop to room temperature before operating, resulting in long production downtime, low maintenance efficiency, and greatly reduced production efficiency. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide a sand sealing mechanism for an intermittent trolley heat treatment furnace which is easy to maintain, highly flexible to use and can effectively improve production efficiency.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A sand sealing mechanism for an intermittent trolley heat treatment furnace comprises a heat treatment furnace body and a trolley, wherein the heat treatment furnace body has at least one set of furnace doors and furnace walls, furnace body sand sealing knives are fixedly provided at the bottom of the furnace doors and the furnace walls, trolley sand sealing knives are fixedly provided around the bottom of the trolley, and sand sealing grooves are provided on the outer periphery of the trolley in a liftable manner, wherein the furnace body sand sealing knife and the trolley sand sealing knife can be inserted into the sand sealing grooves by lifting.

[0006] As a further improvement of the above technical solution:

[0007] A supporting mechanism for supporting the sand sealing groove is provided at the bottom of the trolley.

[0008] A lifting mechanism is provided at the bottom of the sand sealing groove for driving the sand sealing groove to perform a lifting action. The lifting mechanism includes a lifting seat fixedly set on the ground and a roller rotatably set at the bottom of the sand sealing groove. The lifting seat is provided with an inclined surface and a horizontal surface, and the roller abuts against the inclined surface and the horizontal surface.

[0009] A vertical guide mechanism is also provided between the sand sealing groove and the trolley for enabling the sand sealing groove to reciprocate only in the vertical direction. The vertical guide mechanism includes a vertical guide groove fixedly provided on the trolley and a guide wheel rotatably provided on the sand sealing groove, and the guide wheel is embedded in the vertical guide groove.

[0010] Compared with the prior art, the advantages of the present invention are:

[0011] The sand sealing mechanism for an intermittent trolley heat treatment furnace of the present invention is configured with a sand sealing groove on the periphery of the trolley so that the sand sealing groove can move in and out of the heat treatment furnace body with the trolley, thereby replacing the technical solution in the prior art of configuring the sand sealing groove within the furnace body; the sand sealing groove can be raised and lowered on the trolley and the furnace body sand sealing knife and the trolley sand sealing knife can be inserted into the sand sealing groove through a lifting action, thereby ensuring the sealing and heat insulation of the heat treatment furnace body; when the sand sealing groove is damaged, the staff can promptly discover and replace and maintain it; it is easy to inspect and repair, and there is no need to enter the furnace for repair or wait for the temperature inside the furnace body to drop to room temperature; the shutdown time for repairs on a single trolley is shortened, production efficiency can be effectively improved, and it has the advantages of high flexibility and convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the sand sealing mechanism for an intermittent trolley heat treatment furnace.

[0013] Figure 2 This is a top view of the sand sealing mechanism for an intermittent trolley heat treatment furnace.

[0014] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure in the AA direction.

[0015] Figure 4 for Figure 3 Enlarged view of detail C.

[0016] Figure 5 for Figure 2 Schematic diagram of the cross-sectional structure in the middle BB direction.

[0017] Figure 6 This is a structural diagram of the trolley from an upward perspective.

[0018] Figure 7 for Figure 6 Enlarged view of detail D.

[0019] Legend:

[0020] 1. Heat treatment furnace body; 101. Furnace door; 102. Furnace wall; 2. Trolley; 3. Furnace body sand sealing knife; 4. Trolley sand sealing knife; 5. Sand sealing groove; 6. Supporting mechanism; 7. Lifting mechanism; 701. Lifting seat; 7011. Inclined surface; 7012. Horizontal surface; 702. Roller; 8. Vertical guide mechanism; 801. Vertical guide groove; 802. Guide wheel. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] like Figures 1 to 7 As shown, the sand sealing mechanism for the intermittent trolley heat treatment furnace of this embodiment includes a heat treatment furnace body 1 and a trolley 2. The heat treatment furnace body 1 has at least one set of furnace doors 101 and furnace walls 102. Furnace body sand sealing knives 3 are fixedly provided at the bottom of the furnace door 101 and the furnace wall 102. Trolley sand sealing knives 4 are fixedly provided on all sides of the bottom of the trolley 2. Sand sealing grooves 5 are provided on the outer periphery of the trolley 2 in a liftable manner. The sand sealing grooves 5 can be lifted to allow the furnace body sand sealing knife 3 and the trolley sand sealing knife 4 to be inserted into the sand sealing grooves 5. The intermittent trolley heat treatment furnace uses a sand sealing mechanism to set a sand sealing groove 5 on the periphery of the trolley 2 so that the sand sealing groove 5 can enter and exit the heat treatment furnace body 1 with the trolley 2, replacing the technical solution of setting the sand sealing groove 5 in the furnace body in the prior art. The sand sealing groove 5 can be raised and lowered on the trolley 2 and can insert the furnace body sand sealing knife 3 and the trolley sand sealing knife 4 into the sand sealing groove 5 by lifting, thereby ensuring the sealing and heat insulation of the heat treatment furnace body 1. When the sand sealing groove 5 is damaged, the staff can find it in time and replace and maintain it. It is easy to repair and does not need to enter the furnace for repair. There is no need to wait for the temperature in the furnace body to drop to room temperature. The shutdown time for maintenance of a single trolley is shortened, which can effectively improve production efficiency and has the advantages of high flexibility and convenience. Preferably, the heat treatment furnace body 1 is equipped with two trolleys 2. When one trolley 2 needs to repair the sand sealing groove 5, the other trolley 2 can be used to achieve continuous production without stopping for maintenance.

[0023] It should be noted that, in the present embodiment, the heat treatment furnace body 1 is a double-door furnace body, the number of furnace doors 101 is set to two groups, the furnace wall 102 includes a first side wall and a second side wall, and the two groups of furnace doors 101 are respectively arranged at the two ends of the first side wall and the second side wall; in other embodiments, the heat treatment furnace body 1 can be a single-door furnace body, the number of furnace doors 101 can be set to one group, the furnace wall 102 includes a first side wall, a second side wall and a rear wall, and the furnace door 101 is arranged at the front end of the first side wall and the second side wall, which is not limited to the present embodiment.

[0024] Preferably, a supporting mechanism 6 for supporting the sand sealing groove 5 is provided at the bottom of the trolley 2 . When the sand sealing groove 5 is in a non-sand sealing working state, the sand sealing groove 5 is placed on the supporting mechanism 6 and moves with the trolley 2 .

[0025] Preferably, a lifting mechanism 7 for driving the sand sealing groove 5 to perform lifting and lowering movements is provided at the bottom of the sand sealing groove 5. The lifting mechanism 7 includes a lifting seat 701 fixedly set on the ground and a roller 702 rotatably set at the bottom of the sand sealing groove 5. The lifting seat 701 is provided with an inclined surface 7011 and a horizontal surface 7012, and the roller 702 is in contact with the inclined surface 7011 and the horizontal surface 7012. In this embodiment, multiple groups of lifting mechanisms 7 are provided at the bottom of the sand sealing groove 5. The sand sealing groove 5 is placed on the supporting mechanism 6 as the initial state. When the trolley 2 moves into the heat treatment furnace body 1, the roller 702 abuts against the inclined surface 7011. During the movement of the trolley 2, the roller 702 rolls upward along the inclined surface 7011. At this time, the sand sealing groove 5 is lifted and lifted away from the supporting mechanism 6. When the roller 702 moves to the horizontal plane 7012, the sand sealing groove 5 is lifted to the highest position and the furnace body sand sealing knife 3 and the trolley sand sealing knife 4 are inserted into the sand sealing groove 5, and the sand in the sand sealing groove 5 is used to achieve sealing and insulation of the heat treatment furnace body 1.

[0026] Preferably, a vertical guide mechanism 8 is further provided between the sand sealing groove 5 and the trolley 2 for enabling the sand sealing groove 5 to reciprocate only in the vertical direction. The vertical guide mechanism 8 comprises a vertical guide groove 801 fixedly provided on the trolley 2 and a guide wheel 802 rotatably provided on the sand sealing groove 5, the guide wheel 802 being embedded in the vertical guide groove 801. In this embodiment, by providing the vertical guide mechanism 8 between the sand sealing groove 5 and the trolley 2, the sand sealing groove 5 and the trolley 2 will not move relative to each other in the horizontal direction during the horizontal reciprocating movement of the trolley 2, thereby preventing the sand sealing groove 5 from being horizontally displaced when the trolley 2 is raised or lowered, which would result in the furnace sand sealing knife 3 or the trolley sand sealing knife 4 being unable to be inserted into the sand sealing groove 5.

[0027] The above is only a preferred embodiment of the present invention, and the scope of protection of the present invention is not limited to the above embodiment. For those skilled in the art, improvements and modifications obtained without departing from the technical concept of the present invention should also be considered as the scope of protection of the present invention.

Claims

1. A sand sealing mechanism for an intermittent trolley heat treatment furnace, comprising a heat treatment furnace body (1) and a trolley (2), wherein the heat treatment furnace body (1) has at least one set of furnace doors (101) and furnace walls (102), and is characterized in that: The bottoms of the furnace door (101) and the furnace wall (102) are both fixedly provided with furnace body sand sealing knives (3), the bottom of the trolley (2) is fixedly provided with trolley sand sealing knives (4) all around, and the outer periphery of the trolley (2) is provided with a sand sealing groove (5) in a liftable manner, and the sand sealing groove (5) can be lifted to allow the furnace body sand sealing knife (3) and the trolley sand sealing knife (4) to be inserted into the sand sealing groove (5).

2. The sand sealing mechanism for an intermittent trolley heat treatment furnace according to claim 1, characterized in that: A supporting mechanism (6) for supporting the sand sealing groove (5) is provided at the bottom of the trolley (2).

3. The sand sealing mechanism for an intermittent trolley heat treatment furnace according to claim 2, characterized in that: A lifting mechanism (7) for driving the sand sealing groove (5) to perform a lifting action is provided at the bottom of the sand sealing groove (5), the lifting mechanism (7) comprising a lifting seat (701) fixedly arranged on the ground and a roller (702) rotatably arranged at the bottom of the sand sealing groove (5), the lifting seat (701) being provided with an inclined surface (7011) and a horizontal surface (7012), and the roller (702) being in contact with the inclined surface (7011) and the horizontal surface (7012).

4. The sand sealing mechanism for an intermittent trolley heat treatment furnace according to claim 3, characterized in that: A vertical guide mechanism (8) is further provided between the sand sealing groove (5) and the trolley (2) for enabling the sand sealing groove (5) to reciprocate only in the vertical direction. The vertical guide mechanism (8) comprises a vertical guide groove (801) fixedly provided on the trolley (2) and a guide wheel (802) rotatably provided on the sand sealing groove (5), wherein the guide wheel (802) is embedded in the vertical guide groove (801).

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