A cooling device for medium frequency quenching furnace

Abstract

The present invention belongs to the technical field of cooling devices for quenching furnaces, and specifically discloses a cooling device for a medium frequency quenching furnace, comprising a water cooling tower and a furnace body, wherein a mounting block is arranged between the water cooling tower and the furnace body, a water pump is arranged on one side of the mounting block, and a water inlet end of the water pump is connected to a delivery pipe; by arranging a filter assembly and a filter cavity, the flow rate of cooling water in the filter cavity can be actively reduced under the action of the filter cavity, so that scale crystals can be actively deposited inside the filter cavity, and by arranging the filter assembly, good conditions for the formation of scale are provided, so that scale can be actively formed inside the filter assembly, thereby reducing the occurrence of scale crystals entering the inside of the water cooling tower, avoiding the formation of scale in the heat exchange pipe inside the water cooling tower to affect the subsequent heat dissipation and cooling effect, and can reduce the difficulty of subsequent cleaning of the water cooling tower.

Description

Technical Field

[0001] The invention belongs to the technical field of cooling devices for quenching furnaces, and specifically discloses a cooling device for a medium frequency quenching furnace. Background Art

[0002] Medium frequency quenching is a new type of environmentally friendly induction heating equipment with a high degree of automation. It uses the principle of electromagnetic induction heating to generate eddy currents in the workpiece placed in the induction coil, thereby causing the workpiece to heat up and be heated to the required temperature. During use, a cooling device is required to cool it. Usually, a cooling tower is used for water cooling circulation. However, after long-term use, the cooling water will form scale crystals due to the internal minerals affected by the high temperature of the medium frequency quenching furnace. The scale crystals are easily deposited in the heat exchange tubes in the water cooling tower, affecting the subsequent heat dissipation and cooling effect, and are not easy to clean. Summary of the invention

[0003] In view of this, the purpose of the present invention is to provide a cooling device for a medium frequency quenching furnace to solve the problem in the prior art that scale crystals are easily deposited in the heat exchange tubes in the water cooling tower.

[0004] To achieve the above purpose, the present invention provides a cooling device for a medium frequency quenching furnace, comprising a water cooling tower and a furnace body, a mounting block is arranged between the water cooling tower and the furnace body, a water pump is arranged on one side of the mounting block, a water inlet end of the water pump is connected with an outlet pipe, the other end of the outlet pipe is used to cooperate with the water pump to outlet the cooling water after the furnace body is used, an introduction pipe is arranged on the other side of the mounting block, a reflux pipe is arranged on the surface of the water cooling tower, a filter cavity is opened inside the mounting block, the introduction pipe is connected with the filter cavity, the filter cavity is arranged with uniformly distributed filter components, and the surface of the mounting block is provided with auxiliary components;

[0005] The filter assembly includes a plurality of mounting grooves opened on the surface of the mounting block and connected to the filter cavity, the interior of the filter cavity is provided with evenly distributed connecting plates, the top of the connecting plate passes through the adjacent mounting groove and is fixedly connected with the mounting plate, the surface of the mounting plate is provided with evenly distributed bolts, the lower ends of the bolts pass through the mounting plate and are threadedly connected to the inner wall of the mounting block, the surface of the connecting plate is provided with evenly distributed through holes, and the connecting plate divides the filter cavity into evenly distributed filtering areas.

[0006] In the above technical solution, preferably, a fixing plate is fixedly connected to the inner wall of the through hole, and evenly distributed filter holes are opened on the surface of the fixing plate. A fan blade is provided on one side of the fixing plate, and a rotating shaft is fixedly connected to the surface of the fan blade. The other end of the rotating shaft passes through the fixing plate and extends to the interior of the through hole, and evenly distributed brushes are fixedly connected to the surface of the rotating shaft.

[0007] In the above technical solution, preferably, the side of the fixed plate away from the fan blades is fixedly connected with protrusions staggered with the filter holes, the surface of the protrusions is fixedly connected with evenly distributed connecting strips, and the surface of the connecting strips is fixedly connected to the inner wall of the through hole.

[0008] In the above technical solution, preferably, an introduction shell is fixedly connected to the inner wall of the through hole, the cross-sectional shape of the introduction shell is funnel-shaped, and a collecting chamber is formed between the introduction shell and the fixed plate.

[0009] In the above technical solution, preferably, the filter assembly also includes a plurality of installation cavities opened on the inner bottom wall of the filter cavity, the inner wall of the installation cavity is slidably connected with a pressure plate, the top of the pressure plate contacts the bottom of the adjacent connecting plate, the bottom of the pressure plate is fixedly connected with a block, the inner bottom wall of the installation cavity is fixedly connected with a limiting rod, the upper end of the limiting rod passes through the block and is slidably connected to the inner wall of the block, and a first spring is fixedly connected between the surface of the limiting rod and the inner wall of the block.

[0010] In the above technical solution, preferably, the auxiliary component includes a plurality of connecting tubes arranged on one side of the mounting block, the cross-sectional shape of the connecting tube is U-shaped, the two ends of the connecting tube are respectively connected to the two filtering areas, the inner wall of one end of the connecting tube is fixedly connected to a mounting ring, the inner wall of the mounting ring is slidably connected to a sealing block, the surface of the sealing block is fixedly connected to an adjusting rod, the surface of the connecting tube is fixedly connected to a mounting shell, the other end of the adjusting rod passes through the connecting tube and the mounting shell in sequence and is slidably connected to the inner wall of the mounting shell, and the other end of the adjusting rod is flush with an end of the mounting shell away from the connecting tube.

[0011] In the above technical solution, preferably, a slip ring slidably connected to the inner wall of the mounting shell is fixedly connected to the surface of the adjusting rod, and a second spring is fixedly connected between one side of the slip ring and the inner wall of the mounting shell.

[0012] In the above technical solution, preferably, a positioning plate is fixedly connected to the inner wall of the other end of the connecting tube, a mounting column is fixedly connected to the side of the positioning plate away from the mounting block, a through groove is provided on the surface of the mounting column, a sealing ring is slidably connected to the surface of the mounting column, the surface of the sealing ring is in contact with the inner wall of the connecting tube, and a third spring is fixedly connected between the sealing ring and the positioning plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. By setting up the filter assembly and the filter chamber, the flow rate of the cooling water in the filter chamber can be actively reduced under the action of the filter chamber, so that scale crystals can be actively deposited inside the filter chamber, and the filter assembly provides good conditions for the formation of scale, so that scale can be actively formed inside the filter assembly, thereby reducing the occurrence of scale crystals entering the water cooling tower, avoiding the formation of scale in the heat exchange pipe inside the water cooling tower to affect the subsequent heat dissipation and cooling effect, and can reduce the difficulty of subsequent cleaning of the water cooling tower.

[0015] 2. By setting up the filter assembly, a single connecting plate can be replaced online without stopping for maintenance and cleaning, and the operation is simple. After the connecting plate is removed, the filter cavity can be distributed under the action of the pressure plate and the block. After the subsequent water is continuously introduced, it can be introduced into the collection cavity on another connecting plate for cleaning through the auxiliary assembly, ensuring a good filtering effect during the replacement process, and the operation is simple without stopping.

[0016] 3. Through the setting of auxiliary components, the staff can be reminded after the scale crystals collected on the inner wall of the collection chamber are saturated and block the filter holes. Since the scale crystals block the filter holes, the subsequently introduced water will not be able to be discharged normally, and then gradually overcome the elastic force of the second spring, and push the sealing block to separate from the mounting ring. At this time, the subsequently introduced water can enter the interior of the connecting pipe and squeeze the sealing ring to slide along the surface of the mounting column. In this process, the third spring can be squeezed to move the sealing ring to the middle of the mounting column. At this time, the water can bypass the sealing ring through the through groove and be introduced into the interior of the downward filter area, preventing the blockage from causing excessive water pressure and causing damage to the device, and use another filter component to filter it to maintain a good filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a schematic diagram of the distribution of the outlet pipe, water pump, mounting block and inlet pipe of the present invention;

[0019] Figure 3 It is a schematic diagram of the separation of the filter assembly of the present invention;

[0020] Figure 4 It is a schematic diagram of the distribution of the connecting plate, the mounting plate and the bolts of the present invention;

[0021] Figure 5 It is a schematic diagram of the distribution of the fixing plate, protrusions, connecting strips and rotating shafts of the present invention;

[0022] Figure 6 It is a schematic diagram of the connection between the stopper, the pressure plate and the filter chamber of the present invention;

[0023] Figure 7for Figure 4 A magnified view of middle;

[0024] Figure 8 It is a schematic diagram of the structure of the auxiliary components of the present invention.

[0025] In the figure: 1, water cooling tower; 2, furnace body; 201, water pump; 202, outlet pipe; 203, return pipe; 204, inlet pipe; 3, mounting block; 301, filter chamber; 4, auxiliary components; 401, connecting pipe; 402, mounting ring; 403, sealing block; 404, mounting shell; 405, adjusting rod; 406, slip ring; 407, second spring; 408, mounting column; 409, positioning plate; 410, through groove; 411, The third spring; 412, sealing ring; 5, filter assembly; 501, connecting plate; 502, mounting plate; 503, bolts; 504, fixing plate; 505, filter hole; 506, protrusion; 507, brush; 508, connecting strip; 509, fan blade; 510, rotating shaft; 511, pressure plate; 512, stopper; 513, limiting rod; 514, first spring; 515, mounting groove; 516, introduction shell; 517, through hole. DETAILED DESCRIPTION

[0026] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] like Figure 1-Figure 8 A cooling device for a medium frequency quenching furnace shown in the figure comprises a water cooling tower 1 and a furnace body 2, a mounting block 3 is arranged between the water cooling tower 1 and the furnace body 2, a water pump 201 is arranged on one side of the mounting block 3, a water inlet end of the water pump 201 is connected with an outlet pipe 202, the other end of the outlet pipe 202 is used to cooperate with the water pump 201 to outlet the cooling water after use of the furnace body 2, an inlet pipe 204 is arranged on the other side of the mounting block 3, a reflux pipe 203 is arranged on the surface of the water cooling tower 1, a filter chamber 301 is opened inside the mounting block 3, the inlet pipe 204 is connected with the filter chamber 301, the filter chamber 301 is provided with uniformly distributed filter components 5, and an auxiliary component 4 is arranged on the surface of the mounting block 3;

[0029] The inlet pipe 204 is used to introduce the filtered cooling water into the water cooling tower 1 for heat dissipation and cooling. The reflux pipe 203 is used to introduce the cooling water after heat dissipation and cooling into the furnace body 2 for use by the furnace body 2.

[0030] The filter assembly 5 includes a plurality of mounting grooves 515 opened on the surface of the mounting block 3 and connected to the filter chamber 301. The interior of the filter chamber 301 is provided with evenly distributed connecting plates 501. The top of the connecting plate 501 passes through the adjacent mounting grooves 515 and is fixedly connected to the mounting plate 502. The surface of the mounting plate 502 is provided with evenly distributed bolts 503. The lower end of the bolt 503 passes through the mounting plate 502 and is threadedly connected to the inner wall of the mounting block 3. The surface of the connecting plate 501 is provided with evenly distributed through holes 517. The connecting plate 501 divides the filter chamber 301 into evenly distributed filtering areas.

[0031] The mounting plate 502 can be limited by the bolts 503 . After the limitation on the mounting plate 502 is released by removing the bolts 503 , the connecting plate 501 can be taken out for replacement.

[0032] By starting the water pump 201, the used cooling water is introduced into the filter chamber 301 through the outlet pipe 202, and after being filtered under the action of the filter component 5, it is introduced into the water cooling tower 1 for heat dissipation and cooling treatment. In this process, scale crystals can be filtered and retained to prevent a large amount of scale crystals from entering the water cooling tower 1 to form scale and affect the heat exchange effect. The specific water cooling tower 1 is a closed water cooling tower.

[0033] like Figure 1-Figure 8 As shown, the inner wall of the through hole 517 is fixedly connected to a fixing plate 504, the surface of the fixing plate 504 is provided with evenly distributed filter holes 505, a fan blade 509 is provided on one side of the fixing plate 504, the surface of the fan blade 509 is fixedly connected to a rotating shaft 510, the other end of the rotating shaft 510 passes through the fixing plate 504 and extends to the inside of the through hole 517, and the surface of the rotating shaft 510 is fixedly connected to evenly distributed brushes 507.

[0034] A side of the fixing plate 504 away from the fan blades 509 is fixedly connected with protrusions 506 that are staggered with the filter holes 505 , and a surface of the protrusions 506 is fixedly connected with evenly distributed connecting strips 508 , and a surface of the connecting strips 508 is fixedly connected to the inner wall of the through hole 517 .

[0035] An introduction shell 516 is fixedly connected to the inner wall of the through hole 517 . The cross-sectional shape of the introduction shell 516 is funnel-shaped. A collecting chamber is formed between the introduction shell 516 and the fixed plate 504 .

[0036] The setting of the filter chamber 301 reduces the flow rate of cooling water introduced into the filter chamber 301, thereby facilitating the deposition of scale crystals inside the filter chamber 301, reducing the situation where scale crystals enter the interior of the water cooling tower 1, and reducing the difficulty of subsequent cleaning.

[0037] The connecting strip 508 and the protrusion 506 in the collecting chamber can make the inner wall of the collecting chamber uneven, thereby increasing the contact area with the scale crystals so that the scale crystals can be better deposited inside the collecting chamber. The setting of the introduction shell 516 can enable the scale crystals to enter the interior of the collecting chamber under the drive of the water flow, and the funnel-shaped setting of the introduction shell 516 can prevent the scale crystals from flowing back. The setting of the filter hole 505 can allow water to pass through normally and retain the scale crystals inside the collecting chamber. After the water flows through the filter hole 505, it can drive the fan blades 509 to rotate the rotating shaft 510, thereby driving the brush 507 to rotate. In this process, the inner wall of the collecting chamber can be cleaned, so that the scale crystals will not be overly deposited, which is convenient for subsequent cleaning.

[0038] like Figure 1-Figure 8 As shown, the filter assembly 5 also includes a plurality of installation cavities opened on the inner bottom wall of the filter cavity 301, the inner wall of the installation cavity is slidably connected with a pressure plate 511, the top of the pressure plate 511 contacts the bottom of the adjacent connecting plate 501, the bottom of the pressure plate 511 is fixedly connected with a stopper 512, the inner bottom wall of the installation cavity is fixedly connected with a limiting rod 513, the upper end of the limiting rod 513 passes through the stopper 512 and is slidably connected to the inner wall of the stopper 512, and a first spring 514 is fixedly connected between the surface of the limiting rod 513 and the inner wall of the stopper 512.

[0039] When the connecting plate 501 is installed by means of the bolts 503 and the mounting plate 502, the connecting plate 501 can press the pressure plate 511 to shrink it into the interior of the mounting cavity. Figure 6 During this process, the first spring 514 can be stretched, and the limiting rod 513 is set to limit the movement of the stopper 512. When the connecting plate 501 is removed, the squeezing of the first spring 514 can be released, so that the stopper 512 and the pressure plate 511 are reset under the action of the first spring 514, and then used to separate the filter chamber 301, and the pressure plate 511 blocks the installation groove 515 to prevent the cooling water from overflowing, and at the same time, it can avoid the situation where the cooling water that has not been filtered is directly introduced into the water cooling tower 1.

[0040] like Figure 1-Figure 8 As shown, the auxiliary component 4 includes a plurality of connecting tubes 401 arranged on one side of the mounting block 3, the cross-sectional shape of the connecting tube 401 is U-shaped, and the two ends of the connecting tube 401 are respectively connected to the two filtering areas, the inner wall of one end of the connecting tube 401 is fixedly connected to a mounting ring 402, the inner wall of the mounting ring 402 is slidably connected to a sealing block 403, the surface of the sealing block 403 is fixedly connected to an adjusting rod 405, the surface of the connecting tube 401 is fixedly connected to a mounting shell 404, the other end of the adjusting rod 405 passes through the connecting tube 401 and the mounting shell 404 in sequence and is slidably connected to the inner wall of the mounting shell 404, and the other end of the adjusting rod 405 is flush with an end of the mounting shell 404 away from the connecting tube 401.

[0041] A slip ring 406 slidably connected to the inner wall of the mounting shell 404 is fixedly connected to the surface of the adjusting rod 405 , and a second spring 407 is fixedly connected between one side of the slip ring 406 and the inner wall of the mounting shell 404 .

[0042] A positioning plate 409 is fixedly connected to the inner wall of the other end of the connecting tube 401, and a mounting column 408 is fixedly connected to the side of the positioning plate 409 away from the mounting block 3. A through groove 410 is provided on the surface of the mounting column 408, and a sealing ring 412 is slidably connected to the surface of the mounting column 408. The surface of the sealing ring 412 is in contact with the inner wall of the connecting tube 401, and a third spring 411 is fixedly connected between the sealing ring 412 and the positioning plate 409.

[0043] When too much scale crystallizes inside the collection chamber, it will block the filter hole 505. At this time, the water flow cannot pass through the filter hole 505 normally, so that the water pressure inside the corresponding filter area gradually increases, thereby overcoming the elastic force of the second spring 407 and pushing the sealing block 403 to separate from the mounting ring 402. At this time, the subsequently introduced water can enter the interior of the connecting pipe 401 and squeeze the sealing ring 412 to slide along the surface of the mounting column 408. In this process, the third spring 411 can be squeezed to make the sealing ring 412 move to the middle of the mounting column 408. At this time, the water can bypass the sealing ring 412 through the through groove 410 and be introduced into the interior of the next filter area, preventing the blockage from causing excessive water pressure and causing damage to the device, and using another filter component 5 to filter it, maintaining a good filtering effect, and in the process of the movement of the sealing block 403, it can drive the end of the adjusting rod 405 to pass through the mounting shell 404 so that the staff can observe and judge whether the filtering component 5 at this location is saturated and needs to be replaced. The operation is simple, and a good filtering effect is maintained, providing a good working environment for the water cooling tower 1.

[0044] Working principle: by starting the water pump 201, the used cooling water is introduced into the filter chamber 301 through the outlet pipe 202, and after being filtered under the action of the filter assembly 5, it is introduced into the water cooling tower 1 for heat dissipation and cooling treatment. In this process, the scale crystals can be filtered and intercepted to prevent a large amount of scale crystals from entering the water cooling tower 1 to form scale and affect the heat exchange effect. The specific water cooling tower 1 is a closed water cooling tower. In this process, the connecting strip 508 and the protrusion 506 in the collection chamber can make the inner wall of the collection chamber uneven, which increases the contact with the scale crystals. The contact area enables the scale crystals to be better deposited inside the collection chamber. The setting of the introduction shell 516 enables the scale crystals to enter the collection chamber under the drive of the water flow, and the funnel-shaped setting of the introduction shell 516 can prevent the scale crystals from flowing back. The setting of the filter hole 505 enables water to pass through normally and retain the scale crystals inside the collection chamber. After the water flows through the filter hole 505, it can drive the fan blade 509 to rotate the rotating shaft 510, thereby driving the brush 507 to rotate. In this process, the inner wall of the collection chamber can be cleaned, so that the scale crystals The scale crystals will not be deposited too much, which is convenient for subsequent cleaning. When the scale crystals collected in the collection chamber are too many, the filter hole 505 will be blocked. At this time, the water flow cannot pass through the filter hole 505 normally, so that the water pressure inside the corresponding filter area gradually increases, thereby overcoming the elastic force of the second spring 407, pushing the sealing block 403 to separate from the mounting ring 402, and the water introduced subsequently can enter the interior of the connecting pipe 401, and squeeze the sealing ring 412 to slide along the surface of the mounting column 408. In this process, the third spring 411 can be squeezed to make the sealing ring 412 move to the middle of the mounting column 408. At this time, the water can bypass the sealing ring 412 through the through groove 410 and be introduced into the interior of the downward filter area, preventing the blockage from causing excessive water pressure and causing damage to the device, and using another filter component 5 to filter it, maintaining a good filtering effect, and in the process of the movement of the sealing block 403, the end of the adjusting rod 405 can be driven to pass through the mounting shell 404 so that the staff can observe and judge whether the filtering component 5 at this location is saturated and needs to be replaced. The operation is simple, the good filtering effect is maintained, and a good working environment is provided for the water cooling tower 1.

[0045] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A cooling device for a medium frequency quenching furnace, comprising a water cooling tower (1) and a furnace body (2), characterized in that: A mounting block (3) is provided between the water cooling tower (1) and the furnace body (2); a water pump (201) is provided on one side of the mounting block (3); a water inlet end of the water pump (201) is connected to an outlet pipe (202); the other end of the outlet pipe (202) is used to cooperate with the water pump (201) to outlet cooling water after use of the furnace body (2); an inlet pipe (204) is provided on the other side of the mounting block (3); a return pipe (203) is provided on the surface of the water cooling tower (1); a filter chamber (301) is provided inside the mounting block (3); the inlet pipe (204) is connected to the filter chamber (301); uniformly distributed filter components (5) are provided inside the filter chamber (301); and an auxiliary component (4) is provided on the surface of the mounting block (3); The filter assembly (5) comprises a plurality of mounting grooves (515) which are formed on the surface of the mounting block (3) and are connected to the filter cavity (301); the interior of the filter cavity (301) is provided with evenly distributed connecting plates (501); the top of the connecting plate (501) passes through an adjacent mounting groove (515) and is fixedly connected to the mounting plate (502); the surface of the mounting plate (502) is provided with evenly distributed bolts (503); the lower ends of the bolts (503) pass through the mounting plate (502) and are threadedly connected to the inner wall of the mounting block (3); the surface of the connecting plate (501) is provided with evenly distributed through holes (517); the connecting plate (501) divides the filter cavity (301) into evenly distributed filtering areas; The inner wall of the through hole (517) is fixedly connected to a fixing plate (504), and the surface of the fixing plate (504) is provided with evenly distributed filter holes (505); An introduction shell (516) is fixedly connected to the inner wall of the through hole (517); the cross-sectional shape of the introduction shell (516) is funnel-shaped; a collection chamber is formed between the introduction shell (516) and the fixed plate (504); The filter assembly (5) further comprises a plurality of mounting cavities opened on the inner bottom wall of the filter cavity (301); The auxiliary component (4) comprises a plurality of connecting pipes (401) arranged on one side of the mounting block (3); the cross-sectional shape of the connecting pipe (401) is U-shaped; the two ends of the connecting pipe (401) are respectively connected to the two filtering areas; the inner wall of one end of the connecting pipe (401) is fixedly connected to a mounting ring (402); the inner wall of the mounting ring (402) is slidably connected to a sealing block (403); the surface of the sealing block (403) is fixedly connected to an adjusting rod (405); the surface of the connecting pipe (401) is fixedly connected to a mounting shell (404); the other end of the adjusting rod (405) passes through the connecting pipe (401) and the mounting shell (404) in sequence and is slidably connected to the inner wall of the mounting shell (404); the other end of the adjusting rod (405) is flush with an end of the mounting shell (404) away from the connecting pipe (401).

2. A cooling device for a medium frequency quenching furnace according to claim 1, characterized in that: A fan blade (509) is provided on one side of the fixed plate (504); a rotating shaft (510) is fixedly connected to the surface of the fan blade (509); the other end of the rotating shaft (510) passes through the fixed plate (504) and extends to the inside of the through hole (517); and evenly distributed brushes (507) are fixedly connected to the surface of the rotating shaft (510).

3. A cooling device for a medium frequency quenching furnace according to claim 2, characterized in that: A side of the fixed plate (504) away from the fan blades (509) is fixedly connected to protrusions (506) distributed in an alternating manner with the filter holes (505); the surfaces of the protrusions (506) are fixedly connected to evenly distributed connecting strips (508); and the surfaces of the connecting strips (508) are fixedly connected to the inner wall of the through hole (517).

4. A cooling device for a medium frequency quenching furnace according to claim 1, characterized in that: A pressure plate (511) is slidably connected to the inner wall of the installation cavity, the top of the pressure plate (511) contacts the bottom of the adjacent connecting plate (501), the bottom of the pressure plate (511) is fixedly connected to a stopper (512), a limiting rod (513) is fixedly connected to the inner bottom wall of the installation cavity, the upper end of the limiting rod (513) passes through the stopper (512) and is slidably connected to the inner wall of the stopper (512), and a first spring (514) is fixedly connected between the surface of the limiting rod (513) and the inner wall of the stopper (512).

5. The cooling device for a medium frequency quenching furnace according to claim 1, characterized in that: A slip ring (406) is fixedly connected to the surface of the adjustment rod (405) and is slidably connected to the inner wall of the mounting shell (404). A second spring (407) is fixedly connected between one side of the slip ring (406) and the inner wall of the mounting shell (404).

6. A cooling device for a medium frequency quenching furnace according to claim 5, characterized in that: A positioning plate (409) is fixedly connected to the inner wall of the other end of the connecting tube (401); a mounting column (408) is fixedly connected to the side of the positioning plate (409) away from the mounting block (3); a through groove (410) is provided on the surface of the mounting column (408); a sealing ring (412) is slidably connected to the surface of the mounting column (408); the surface of the sealing ring (412) is in contact with the inner wall of the connecting tube (401); and a third spring (411) is fixedly connected between the sealing ring (412) and the positioning plate (409).

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