CN211695904U - Furnace door cooling system - Google Patents

Abstract

The utility model provides a furnace door cooling system, wherein a cooling medium channel shaft sleeve sleeved outside a door shaft is arranged on the door shaft of a furnace door; a shaft sleeve cooling medium inlet and a shaft sleeve cooling medium outlet are respectively arranged on the outer surface of the cooling medium channel shaft sleeve; the cooling medium channel rotor is arranged on the outer side of the cooling medium channel shaft sleeve and can rotate relatively, and a rotor cooling medium inlet and a rotor cooling medium outlet are respectively arranged at two ends of the cooling medium flow channel; the shaft sleeve cooling medium outlet is communicated with the rotor cooling medium inlet. The utility model discloses can the wide application in the furnace gate cooling system of stove for the hot working, do not restrict the furnace gate opening angle, long service life.

Description

Furnace door cooling system

Technical Field

The utility model relates to a cooling system of furnace for thermal processing, especially the cooling subsystem of the rotation type furnace gate of furnace for thermal processing.

Background

The heat treatment furnace is often provided with a cooling system. The furnace body is in operating condition, and the interior temperature of stove is higher, then cooling system can cool down the furnace body to avoid too high temperature to lead to the furnace body (like oven and furnace gate) to take place the matter to change, lead to the furnace body can not normally work, even the emergence accident.

The oven door also needs to be provided with a cooling system. Taking a thermal processing furnace with a rotary opening type furnace door as an example, the furnace door is connected with a furnace body through a door shaft and rotates, thereby completing the opening and closing actions of the furnace door. The existing furnace door cooling system is generally provided with a cooling pipe system on the rotary furnace door, and the cooling pipe system is communicated with a cooling medium source (such as a cooling medium container) through a hose to form a cooling medium loop. The reason for using a hose for communication is: because the rotary furnace door needs to rotate to realize opening and closing, the hose can deform to a certain degree, and a certain degree of freedom is provided for opening and closing the furnace door. Otherwise, if the hard pipe is used for communicating the furnace door cooling system like the furnace wall cooling system, the hard pipe cannot be deformed, so that the furnace door cannot be opened and closed.

The furnace door cooling system of the prior rotary furnace door has the following problems:

1. the extent of the deformation of the hose is limited, resulting in a smaller opening angle of the oven door, typically less than 90 degrees.

2. Frequent opening and closing of the furnace door enable the hose to be bent and deformed frequently, so that the hose is quick to age, easy to leak and short in service life.

3. The volume is large, and the layout space of other equipment is reduced.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems of limited furnace door opening angle, short service life and large volume of the cooling system of the rotary furnace door of the existing furnace for thermal processing, the utility model provides a novel furnace door cooling system.

The technical scheme of the utility model as follows.

The furnace door cooling system is characterized in that a cooling medium channel shaft sleeve sleeved outside a door shaft is arranged on the door shaft of the furnace door; a shaft sleeve cooling medium inlet and a shaft sleeve cooling medium outlet are respectively arranged on the outer surface of the cooling medium channel shaft sleeve; a shaft sleeve cooling medium flow channel communicated with the shaft sleeve cooling medium inlet and the shaft sleeve cooling medium outlet is arranged on the cooling medium channel shaft sleeve; the cooling medium channel rotor is arranged on the outer side of the cooling medium channel shaft sleeve and can rotate relatively, and a sealing structure is arranged between the cooling medium channel shaft sleeve and the cooling medium channel rotor; a rotor cooling medium flow channel is arranged on the cooling medium channel rotor, and a rotor cooling medium inlet and a rotor cooling medium outlet are respectively arranged at two ends of the cooling medium flow channel; the shaft sleeve cooling medium outlet is communicated with the rotor cooling medium inlet, and when the cooling medium channel shaft sleeve and the cooling medium channel rotor relatively rotate: the size of the shaft sleeve cooling medium outlet is larger than that of the rotor cooling medium inlet, and the rotor cooling medium inlet moves in the range of the shaft sleeve cooling medium outlet; or the size of the shaft sleeve cooling medium outlet is smaller than that of the rotor cooling medium inlet, the shaft sleeve cooling medium outlet moves in the range of the rotor cooling medium inlet.

Optionally, the cooling medium channel rotor includes an annular body sleeved outside the cooling medium channel sleeve; the rotor cooling medium inlet is provided inside the annular body.

Optionally, the rotor cooling medium inlet comprises an annular mouth surrounding the cooling medium passage sleeve.

Optionally, a bearing is provided between the cooling medium passage sleeve and the cooling medium passage rotor.

Optionally, the bearing comprises a rolling bearing.

Optionally, a plurality of sleeve cooling medium outlets are arranged on the cooling medium channel sleeve; the shaft sleeve cooling medium outlets correspond to the cooling medium channel rotors one by one.

Optionally, a spacer ring is arranged between adjacent cooling medium channel rotors.

Optionally, a flange extending towards the cooling medium channel rotor is provided at the spacer ring inner ring; the flange is provided between the cooling medium passage rotor and the cooling medium passage boss.

Optionally, a lubricating layer is arranged on the rotor contact surface of the isolating ring and the cooling medium channel.

Optionally, the material of the isolation ring includes H62 copper.

The technical effects of the utility model:

adopt the utility model discloses technical scheme's furnace gate cooling system, through coolant passageway axle sleeve and the cooperation of coolant passageway rotor, form the cover and can wind door-hinge pivoted coolant passageway on the door-hinge. The cooling medium channel can rotate along with the opening and closing of the door, the flowing effect of the cooling medium is not influenced, and the rotating angle of the furnace door around the door shaft is not interfered. Adopt the utility model discloses a rotatory furnace gate, opening angle can reach 180 degrees. Meanwhile, the cooling medium channel replaces a hose in the prior art, the limiting effect of the hose on opening and closing of the furnace door is avoided, the problem that the service life of the hose is short is solved, the size is reduced, and more layout spaces are reserved for other equipment. Realize the technical scheme of the utility model.

Further effects of the above alternatives will be described below in conjunction with the detailed description.

Drawings

Fig. 1 is an assembly state diagram of an embodiment of the furnace door cooling system of the present invention.

Fig. 2 is an exploded view of the structure of fig. 1.

Fig. 3 is an exploded view of the cooling medium passage rotor of fig. 1.

Fig. 4 is a cross-sectional view of the rotor body identified as 305 in fig. 3.

Fig. 5 is an external view of the coolant passage sleeve shown in fig. 1 from a first perspective.

Fig. 6 is a sectional view taken along line a-a in fig. 5.

Fig. 7 is an external view of the coolant passage sleeve shown in fig. 1 from a second perspective.

Fig. 8 is a sectional view taken along line B-B in fig. 7.

Fig. 9 is an external view of the coolant passage sleeve shown in fig. 1 from a third perspective.

Fig. 10 is a cross-sectional view taken along line C-C of fig. 9.

The designations in the figures illustrate the following:

101. a door shaft; 102. a shaft sleeve cooling medium inlet pipe fitting; 103. a shaft sleeve cooling medium inlet; 104. a cooling medium passage sleeve; 105. a cooling medium passage rotor; 106. a rotor cooling medium outlet pipe fitting;

301. a screw; 302. a dust cover; 303. a rolling bearing; 304. a seal ring; 305. a rotor body; 306. a seal ring; 307. an isolating ring;

401. a bearing groove; 402. a screw hole; 403. a seal ring groove; 404. a seal ring groove; 405. the isolating ring is matched with the groove; 406. a rotor cooling medium outlet;

501. a shaft sleeve cooling medium inlet; 502. a shaft sleeve cooling medium outlet;

601. a shaft sleeve cooling medium inlet pipe fitting;

701. a shaft sleeve cooling medium inlet; 702. a shaft sleeve cooling medium outlet;

801. a shaft sleeve cooling medium inlet pipe fitting;

901. a shaft sleeve cooling medium inlet; 902. a shaft sleeve cooling medium outlet;

1001. and a shaft sleeve cooling medium inlet pipe fitting.

Detailed Description

Exemplary embodiments of the invention are described below with reference to the accompanying drawings, in which various details of embodiments of the invention are included to assist understanding, and which are to be considered exemplary only. Accordingly, it will be appreciated by those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the invention. Descriptions of well-known functions and constructions are omitted for clarity and conciseness.

Fig. 1 and 2 show a specific structural configuration of an embodiment of the furnace door cooling system of the present invention. The furnace door cooling system comprises a cooling medium channel bushing 104 and a cooling medium channel rotor 105. Wherein, the cooling medium channel shaft sleeve 104 is sleeved on the door shaft 101, and the cooling medium channel rotor 105 is sleeved outside the cooling medium channel shaft sleeve 104. Referring to fig. 5 and 6, it can be seen that a sleeve cooling medium inlet 501 and a sleeve cooling medium outlet 502 are provided on the cooling medium passage sleeve 104. In fig. 1, the bushing coolant inlet is designated 103, and there are three bushing coolant inlets 103, one of the bushing coolant inlets 103 having been fitted with a corresponding bushing coolant inlet pipe 102. The sleeve coolant inlet fitting 102 is used to connect with piping that supplies the coolant. As can be seen from fig. 6, a cooling medium flow passage communication is provided between the boss cooling medium inlet 501 and the boss cooling medium outlet 502. The cooling medium flow passage is specifically a closed channel which is arranged on the wall of the cooling medium passage sleeve 104 and is used for connecting a sleeve cooling medium inlet 501 and a sleeve cooling medium outlet 502, or a pipeline which is embedded in the channel. The cooling medium can flow along the cooling medium flow path from the bushing cooling medium inlet 501 to the bushing cooling medium outlet 502. The sleeve cooling medium outlet is not shown due to the shading of the cooling medium channel rotor 105 in fig. 1. In fig. 2, for the sake of simplicity, the boss cooling medium inlet and the boss cooling medium outlet are also not indicated on the cooling medium passage boss 104.

Fig. 3 and 4 show the structural constitution of the cooling medium passage rotor. As seen in fig. 2, the cooling medium passage rotor 105 is an annular body. The main structure of the main portion of the cooling medium passage rotor (rotor body 305 in fig. 3) can be seen from fig. 4. The rotor body 305 is a cylindrical body, and a rotor cooling medium outlet 406 is provided in a wall of the cylindrical body. The rotor body 305 is provided at an upper end thereof with a bearing groove 401, and the bearing groove 401 is used for mounting the rolling bearing 303. The rolling bearing 303 connects the cooling medium passage boss 104 and the cooling medium passage rotor 105 so that the cooling medium passage boss 104 and the cooling medium passage rotor 105 can relatively rotate about the axis of the door shaft 101 as a rotation center. The rotor body 305 is also provided with a plurality of screw holes 402 uniformly arranged circumferentially for receiving the screws 301. The screw 301 is used to fix the dust cover 302. The annular dust cover 302 is sleeved on the cooling medium channel shaft sleeve 104 and is arranged above the rolling bearing 303 and used for sealing the rolling bearing 303 to prevent dust from falling. A seal groove 403 is provided below the bearing groove 401. The seal groove 403 is used to dispose the seal 304. A seal groove 404 is provided below the seal groove 403 for receiving the seal ring 306. Since the inner diameter of the middle section of the rotor body 305 is larger than the outer diameter of the cooling medium passage boss 104, an annular space surrounding the outside of the cooling medium passage boss 104 is formed therebetween, and this annular space is sealed by the seal ring 304 and the seal ring 306. After the cooling medium channel rotor 105 is assembled in place as shown in fig. 1, the outer wall of the cooling medium channel sleeve 104 and the rotor body 305 form a closed annular space, and at the same time, a sleeve cooling medium outlet 502 (see fig. 5) on the cooling medium channel sleeve 104 is located at the position of the annular space, that is, when the cooling medium channel sleeve 104 and the cooling medium channel rotor 105 are stationary and relatively rotate, the sleeve cooling medium outlet 502 always faces the annular space, so that the cooling medium can be always input into the annular space. As can be seen from fig. 4, a rotor cooling medium outlet 406 is provided in the wall of the rotor body 305, i.e. in the wall corresponding to said annular space. The rotor cooling medium outlet 406 serves to discharge the cooling medium in the annular space. The annular space forms a rotor cooling medium flow passage. Part of the interface of the annular space and the cooling medium channel sleeve 104 serves as a rotor cooling medium inlet of the rotor cooling medium flow channel, and the sleeve cooling medium outlet 502 is directly communicated with the rotor cooling medium inlet. The rotor cooling medium inlet is actually an annular opening, and is also the range in which the annular space is open to the sleeve cooling medium outlet 502, i.e., the range in which the sleeve cooling medium outlet 502 moves in the annular space when the cooling medium passage sleeve 104 and the cooling medium passage rotor 105 rotate relative to each other.

The lowermost spacer ring 307 in fig. 3 is arranged below the rotor body 305. The spacer 307 is mainly a sheet-like ring, and an upwardly projecting flange is provided on the inner edge of the sheet-like ring. In the assembled state, the inner flange is placed in the spacer fitting groove 405 shown in fig. 4 between the cooling medium passage boss 104 and the cooling medium passage rotor 105. Thus, the flange provides radial support for the cooling medium passage rotor 105 at the location of the spacer ring mating groove 405.

Fig. 5 and 6 show a sleeve cooling medium inlet 501 and a sleeve cooling medium outlet 502 provided in the cooling medium passage sleeve 104, both constituting an inlet and an outlet of a sleeve cooling medium flow passage. In fig. 6, a sleeve cooling medium inlet pipe 601 is shown provided on the sleeve cooling medium inlet 501 for connection with a cooling medium supply line.

Fig. 7 and 8 show a sleeve cooling medium inlet 701 and a sleeve cooling medium outlet 702 provided on the cooling medium passage sleeve 104. In fig. 8, a sleeve cooling medium inlet fitting 801 is shown that mates with a sleeve cooling medium inlet 701. The same structural functions and effects as those in fig. 5 and 6 are the same, and are not described again here. The difference from that shown in fig. 5 and 6 is that the length of the sleeve cooling medium flow passage is different.

Fig. 9 and 10 show a sleeve cooling medium inlet 901 and a sleeve cooling medium outlet 902 provided on the cooling medium passage sleeve 104, and a sleeve cooling medium inlet pipe member 1001 associated with the sleeve cooling medium inlet 901. The same structural functions and effects as those in fig. 5 and 6 are the same, and are not described again here. The difference from that shown in fig. 5 and 6 is that the length of the sleeve cooling medium flow passage is different. Meanwhile, fig. 9 also shows a plurality of sleeve cooling medium inlets and sleeve cooling medium outlets provided in the cooling medium passage sleeve 104. As can be seen in fig. 9, there are three pairs of sleeve cooling medium inlets and sleeve cooling medium outlets, and the corresponding three cooling medium flow channels are all parallel to the axis of the cooling medium channel sleeve 104. The positions of the cooling medium outlets of the sleeve are different in the axial direction of the cooling medium passage sleeve 104, and as can be seen from fig. 1, each cooling medium outlet of the sleeve corresponds to one cooling medium passage rotor 105.

The working process of the embodiment shown in the drawings is described below with reference to the drawings, so as to further explain the technical solution of the present invention.

Referring to fig. 1, the cooling medium enters the cooling medium passage sleeve 104 from the sleeve cooling medium inlet pipe member 102 and then through the sleeve cooling medium inlet 103 (i.e., the sleeve cooling medium inlet 501 in fig. 5). Specifically, into a cooling medium flow passage provided between a boss cooling medium inlet 501 and a boss cooling medium outlet 502 (refer to fig. 6).

Next, the cooling medium flows out from the shaft sleeve cooling medium outlet 502, enters the closed annular space (refer to the description of fig. 4) formed by the outer wall of the cooling medium channel shaft sleeve 104 and the rotor body 305, and then flows into the cooling pipeline arranged on the oven door from the rotor cooling medium outlet 406 and the rotor cooling medium outlet pipe fitting 106 matched with the rotor cooling medium outlet 406.

It can be seen from above-mentioned working process that cooling medium passes through the utility model discloses an embodiment has realized entering into this function of cooling pipeline on the furnace gate from the cooling medium source. The coolant passage sleeve 104 and the coolant passage rotor 105 are rotatable relative to each other, and the coolant can be ensured to flow freely. The coolant channel bushing 104 is in communication with a piping for supplying a coolant, the coolant channel rotor 105 is connected to a cooling line on the door, the coolant channel rotor 105 rotates with the door when the door is opened and closed, and the coolant channel bushing 104 (and its connected coolant source line) can remain stationary. This avoids the cooling medium source lines from moving as the oven door is opened and closed, and thus avoids damage to the associated lines from such movement. The embodiment occupies small space and has long service life.

In conjunction with fig. 1 and 9, there are three pairs of cooling medium passage rotors 105 and rotor cooling medium outlets 106, which form three cooling medium passages. The three cooling medium channels can be respectively and correspondingly arranged on three cooling pipelines on the furnace door, and supply of cooling medium and regulation and control of a cooling process are respectively carried out; or the cooling medium channels can be combined to form a cooling medium loop, namely one or two cooling medium channels are cooling medium inlet channels, and the other two or one cooling medium channel is used for leading out the cooling medium after the furnace door is cooled.

As can be seen in connection with fig. 1 and 3, spacer rings 307 are provided between the cooling medium channel rotors 105. As previously described, the spacer ring 307 may provide radial support to the cooling medium channel rotor 105. When the furnace door is opened, because the furnace door is in a cantilever state, the radial pressure of the cooling medium channel rotor 105 is large, if the radial support is insufficient, the abrasion between the cooling medium channel rotor 105 and the cooling medium channel shaft sleeve 104 is increased, and the sealing structure between the cooling medium channel rotor 105 and the cooling medium channel shaft sleeve 104 is easily damaged, so that the cooling medium is leaked. Alternatively, providing a lubricating layer on the face of the spacer ring 307 in contact with the other cooling medium passage rotors 105 can reduce friction and wear between the cooling medium passage rotors 105. The spacer ring 307 may also be made of H62 copper, and H62 copper has a self-lubricating effect and also functions to reduce friction and wear between the coolant channel rotors 105.

It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, and the present invention can also be modified in materials and structures, or replaced by technical equivalents. Therefore, all structural equivalents which may be made by applying the present invention to the specification and drawings, or by applying them directly or indirectly to other related technical fields, are intended to be encompassed by the present invention.

Claims (10)

1. Furnace gate cooling system, its characterized in that: a cooling medium channel shaft sleeve sleeved outside the door shaft is arranged on the door shaft of the furnace door; a shaft sleeve cooling medium inlet and a shaft sleeve cooling medium outlet are respectively arranged on the outer surface of the cooling medium channel shaft sleeve; a shaft sleeve cooling medium flow channel communicated with the shaft sleeve cooling medium inlet and the shaft sleeve cooling medium outlet is arranged on the cooling medium channel shaft sleeve;

the cooling medium channel rotor is arranged on the outer side of the cooling medium channel shaft sleeve and can rotate relatively, and a sealing structure is arranged between the cooling medium channel shaft sleeve and the cooling medium channel rotor; a rotor cooling medium flow channel is arranged on the cooling medium channel rotor, and a rotor cooling medium inlet and a rotor cooling medium outlet are respectively arranged at two ends of the cooling medium flow channel;

the shaft sleeve cooling medium outlet is communicated with the rotor cooling medium inlet, and when the cooling medium channel shaft sleeve and the cooling medium channel rotor relatively rotate: the size of the shaft sleeve cooling medium outlet is larger than that of the rotor cooling medium inlet, and the rotor cooling medium inlet moves in the range of the shaft sleeve cooling medium outlet; or the size of the shaft sleeve cooling medium outlet is smaller than that of the rotor cooling medium inlet, the shaft sleeve cooling medium outlet moves in the range of the rotor cooling medium inlet.

2. The oven door cooling system according to claim 1, characterized in that: the cooling medium channel rotor comprises an annular body sleeved outside the cooling medium channel shaft sleeve; the rotor cooling medium inlet is provided inside the annular body.

3. The oven door cooling system according to claim 2, characterized in that: the rotor cooling medium inlet includes an annular mouth surrounding the cooling medium passage sleeve.

4. The oven door cooling system according to claim 2 or 3, characterized in that: a bearing is arranged between the cooling medium channel shaft sleeve and the cooling medium channel rotor.

5. The oven door cooling system according to claim 4, wherein: the bearing includes a rolling bearing.

6. The oven door cooling system according to claim 1, characterized in that: a plurality of shaft sleeve cooling medium outlets are arranged on the cooling medium channel shaft sleeve; the shaft sleeve cooling medium outlets correspond to the cooling medium channel rotors one by one.

7. The oven door cooling system according to claim 6, wherein: and a spacer ring is arranged between adjacent cooling medium channel rotors.

8. The oven door cooling system according to claim 7, wherein: a flange extending toward the cooling medium passage rotor is provided on the inner ring of the separator; the flange is provided between the cooling medium passage rotor and the cooling medium passage boss.

9. The oven door cooling system according to claim 7 or 8, characterized in that: and a lubricating layer is arranged on the contact surface of the isolating ring and the cooling medium channel rotor.

10. The oven door cooling system according to claim 7 or 8, characterized in that: the material of the isolating ring comprises H62 copper.

Images