Automatic sealing device for evaporator

Abstract

The present invention relates to the field of evaporator installation, in particular to an evaporator automatic sealing device, comprising a shell and a receiving and pressing mechanism, the receiving and pressing mechanism comprising a slide, a rotating plate, a side guard, and a receiving arc plate, the slide is fixedly mounted in the middle of the shell, the side guard is fixedly mounted on the outer circular wall of the rotating plate, the side guard rolls in a slide groove on the inner side of the slide, the receiving arc plate is fixedly mounted on the inner circular wall of the rotating plate, a top sleeve is fixedly mounted on the upper end of the shell and the material trough at the upper end of the slide, a pipe sleeve is movably placed in the top sleeve, the design can drive the rotating plate to rotate through the meshing action of the incomplete outer gear ring and the driving gear, and the receiving arc plate is used to receive the pipe sleeve in the top sleeve, thereby facilitating the connection between the copper pipe and the pipe sleeve, the telescopic rod in the auxiliary pressing mechanism is extended to push the hinged plate to press on the pipe sleeve where the copper pipe is inserted, and the pressing block is used to act on the pipe sleeve so that the copper pipe and the pipe sleeve are tightly connected, thereby preventing the copper pipe from slipping out of the pipe sleeve.

Description

Technical Field

[0001] The present invention relates to the field of evaporator installation, and in particular to an automatic sealing device for an evaporator. Background Art

[0002] Evaporation is the physical process of converting liquid into gas. Generally speaking, an evaporator is an object that converts liquid matter into gas. There are a large number of evaporators in industry, of which the evaporator used in refrigeration systems is one of them. The evaporator is a very important component among the four major parts of refrigeration. The low-temperature condensed liquid passes through the evaporator to exchange heat with the outside air, vaporizes and absorbs heat to achieve the cooling effect. The evaporator is mainly composed of two parts: a heating chamber and an evaporation chamber. The heating chamber provides the heat required for evaporation to the liquid, causing the liquid to boil and vaporize; the evaporation chamber completely separates the gas and liquid phases.

[0003] During the installation and connection process of the evaporator, it is sometimes necessary to connect the pipes at both ends of the evaporator to the heater, condenser, vacuum pump, etc. During this connection process, in order to avoid refrigerant leakage affecting the use effect, the connections between the pipes are usually sealed. The copper pipes are mostly connected by brazing. After one-time welding, it is difficult to disassemble and maintain them later. In addition, during brazing, the copper pipes need to be strictly fixed and limited to avoid misalignment. However, in actual operation, due to the different structures of the evaporator and other equipment, it is difficult to align the copper pipes during brazing. When force is applied to the copper pipes during welding, the copper pipes are prone to fluctuation and misalignment. It requires the cooperation of multiple people to limit and fix the copper pipe connections. In response to the existing problems, an automatic sealing device for evaporators is proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the disadvantage in the prior art that it is difficult to limit and align the copper tubes when they are welded together, and to propose an automatic sealing device for an evaporator.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The cam is fixedly mounted on the upper end of the housing, and the cam is secured to the upper end of the housing with respect to the cam.

[0007] Preferably, a mounting groove is provided on the outer circular wall of the edge guard, an incomplete outer gear ring is fixedly installed in the mounting groove, movable grooves are symmetrically provided at both ends of the slide, a mounting cover is fixedly installed on the outer side of the movable groove, a driving gear is rotatably installed in the mounting cover, the driving gear is meshed with the incomplete outer gear ring for transmission, a driving motor is fixedly installed on one side of the mounting cover, and the output shaft of the driving motor passes through the mounting cover and is fixedly connected to the driving gear.

[0008] Preferably, auxiliary stamping mechanisms are provided on both side walls of the notch of the rotating plate, and the auxiliary stamping mechanisms include a telescopic rod and a hinged plate. The hinged plate is hingedly installed on the side wall of the notch of the rotating plate. One end of the telescopic rod is hingedly connected to the side wall of the notch of the rotating plate, and the other end of the telescopic rod is hingedly connected to the hinged plate. The inner diameter of the hinged plate is equal to the inner diameter of the supporting arc plate, and an insertion mechanism is provided on the rotating plate.

[0009] Preferably, stamping blocks are fixedly mounted in a circumferential array on the inner circular walls of the receiving arc plate and the hinge plate.

[0010] Preferably, a rubber ring gasket is fixedly installed in the middle of the inner circular wall of the pipe sleeve, and the rubber ring gasket can be sleeved on the end of the copper pipe.

[0011] Preferably, the insertion mechanism includes two sliding rods, end plates, bidirectional screws, and two movable racks. The two sliding rods are symmetrically penetrated and fixedly installed on the rotating plate. The end plates are fixedly installed at both ends of the two sliding rods. The bidirectional screws are rotatably penetrated and installed on the rotating plate and the two ends are rotatably connected to the end plates. The two movable racks are slidably sleeved on the two ends of the two sliding rods and are threadedly connected to the two ends of the bidirectional screws. Claws are provided under the two movable racks, and the claws under the two movable racks can be inserted on the copper tube.

[0012] Preferably, the inner circular wall of the clamping claw below the two movable racks is provided with a slot, a limit ring is fixedly installed on the outer circular wall of the copper tube corresponding to the slot, and a rubber roller is rotatably installed in the inner circumferential array of the slot on the inner circular wall of the clamping claw below the movable rack.

[0013] Preferably, the rotating plate is split in the middle, and the split rotating plate is provided with an array of threads inserted and connected with connecting bolts.

[0014] Preferably, a rotation groove is opened in the middle of the divided rotating plate corresponding to the bidirectional screw, the bidirectional screw is fixedly sleeved with a gear ring at the rotating groove, a driving gear is rotatably installed in the rotating groove, the gear ring is meshed with the driving gear for transmission, a motor is fixedly installed on the outside of the rotating plate, and the motor output shaft is fixedly connected to the driving gear through the rotating plate.

[0015] Preferably, a holding frame is symmetrically fixedly installed on the outer side of the shell.

[0016] The present invention proposes an automatic sealing device for an evaporator, which has the following beneficial effects:

[0017] 1. By rotatably installing the rotating plate in the housing, on the one hand, the rotating plate can be driven to rotate through the meshing action of the incomplete outer gear ring and the driving gear, so that the notch faces upward, and the receiving arc plate is used to receive the pipe sleeve in the top sleeve, thereby facilitating the sleeve connection between the copper tube and the pipe sleeve. On the other hand, the telescopic rod in the auxiliary pressing mechanism is extended to push the hinged plate to press on the pipe sleeve where the copper tube is inserted, and the pressing block is used to act on the pipe sleeve so that the copper tube and the pipe sleeve are tightly connected to prevent the copper tube from slipping out of the pipe sleeve.

[0018] 2. When the corresponding limit ring of the clamping claw below the mobile frame is set on the copper tube, by controlling the rotation of the bidirectional screw in the insertion mechanism, the threaded connection between the bidirectional screw and the mobile frame is used to drive the mobile frame to move toward the middle. At this time, since the card slot in the clamping claw below the mobile frame is clamped on the limit ring, the copper tube can be driven to move toward the middle, thereby realizing the insertion of the copper tube at both ends of the tube sleeve. Compared with manual insertion, it is not only more accurate and synchronous insertion, but also the insertion depth can be accurately adjusted to ensure the sealing of the copper tube connection. The rubber roller can also increase the friction with the outer wall of the copper tube, and can adapt to the contact between the rubber roller and the copper tube when the rotating plate rotates, to avoid the copper tube from rotating with it, or shaking and slipping.

[0019] 3. A rubber ring gasket is installed. When the copper tube is inserted into the tube sleeve, the ends of the two copper tubes will simultaneously squeeze the rubber ring gasket towards the middle, thereby effectively reducing the gap between the two copper tubes and making the connection between the copper tube of the evaporator and other copper tubes more sealed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front structural schematic diagram of an evaporator automatic sealing device proposed by the present invention.

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of an evaporator automatic sealing device proposed by the present invention. Figure 1 .

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of an evaporator automatic sealing device proposed by the present invention. Figure 2 .

[0023] Figure 4 This is a bottom view structural diagram of an evaporator automatic sealing device proposed by the present invention.

[0024] Figure 5 Schematic diagram of part of the structure of an evaporator automatic sealing device proposed by the present invention Figure 1 .

[0025] Figure 6 Schematic diagram of part of the structure of an evaporator automatic sealing device proposed by the present invention Figure 2 .

[0026] Figure 7 Schematic diagram of part of the structure of an evaporator automatic sealing device proposed by the present invention Figure 3 .

[0027] In the figure: shell 1, limiting sleeve 11, top sleeve 12, receiving stamping mechanism 2, slide 21, movable groove 211, rotating plate 22, connecting bolt 221, edge guard 23, receiving arc plate 24, incomplete outer gear ring 25, mounting cover 26, driving gear 27, stamping block 28, auxiliary stamping mechanism 29, telescopic rod 291, hinged plate 292, insertion mechanism 3, slide rod 31, end plate 32, bidirectional screw 33, movable frame 34, rubber roller shaft 35, gear ring 36, driving gear 37, motor 38, copper tube 4, limiting ring 41, pipe sleeve 5, rubber ring gasket 51, holding frame 6. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Example

[0029] Reference Figure 1-2, 5-7, an evaporator automatic sealing device, including a shell 1 and a receiving and stamping mechanism 2, the shell 1 is a semicircular cover structure, with placement grooves at both ends of the shell 1 and limited sleeves 11 fixedly installed in the placement grooves, copper tubes 4 are placed in the limited sleeves 11 at both ends of the shell 1, one of the copper tubes 4 is one end of the evaporator, and the other copper tube 4 is one end of the heater or condenser, which is mainly used for sealing connections between the evaporator and adjacent equipment, and sealing connections between the copper tubes of the evaporator itself, the receiving and stamping mechanism 2 is arranged in the shell 1, and the receiving and stamping mechanism 2 includes a slide 21, a rotating plate 22, a side guard 23, and a receiving arc plate 24. The slide 21 is fixedly installed in the middle of the shell 1, and the inner wall of the slide 21 is correspondingly provided with a slide groove, and the rotating plate 22 is rotatably installed in the shell 1. The rotating plate 22 is an incomplete circular ring. A notch is provided on one side of the rotating plate 22. The angle at the notch is 110 degrees, which is convenient for installing the auxiliary stamping mechanism 29 and the passage of the pipe sleeve 5. At the same time, since the slide 21 is arranged in an arc shape and the angle is approximately equal to 250 degrees, and the angle is the same as that of the rotating plate 22, when the rotating plate 22 rotates in the slide 21, it will not slide. The edge guard 23 is fixedly installed on the outer circular wall of the rotating plate 22, and the edge guard 23 rolls in the slide groove on the inner side of the slide 21. The receiving arc plate 24 is fixedly installed on the inner circular wall of the rotating plate 22. A material trough is provided through the upper ends of the shell 1 and the slide 21. A top sleeve 12 is fixedly installed on the upper end of the material trough, and a pipe sleeve 5 is movably placed in the top sleeve 12.

[0030] A mounting groove is provided on the outer circular wall of the guard edge 23, and an incomplete outer gear ring 25 is fixedly installed in the mounting groove. Movable grooves 211 are symmetrically provided at both ends of the slide 21, and a mounting cover 26 is fixedly installed on the outer side of the movable groove 211. A driving gear 27 is rotatably installed in the mounting cover 26, and the driving gear 27 is engaged with the incomplete outer gear ring 25 for transmission. A driving motor is fixedly installed on one side of the mounting cover 26, and the output shaft of the driving motor passes through the mounting cover 26 and is fixedly connected to the driving gear 27. Two sets of mounting covers 26 and driving gears 27 are provided to ensure that when the rotating plate 22 rotates, at least one driving gear 27 is engaged with the incomplete outer gear ring 25 for transmission, and can provide driving force to the rotating plate 22 to keep it rotating.

[0031] Auxiliary stamping mechanisms 29 are provided on both side walls of the notch of the rotating plate 22. The auxiliary stamping mechanism 29 includes a telescopic rod 291 and a hinged plate 292. The hinged plate 292 is hingedly installed on the side wall of the notch of the rotating plate 22. One end of the telescopic rod 291 is hingedly connected to the side wall of the notch of the rotating plate 22, and the other end of the telescopic rod 291 is hingedly connected to the hinged plate 292. The inner diameter of the hinged plate 292 is equal to the inner diameter of the receiving arc plate 24. Stamping blocks 28 are fixedly installed in a circular array on the inner circular walls of the receiving arc plate 24 and the hinged plate 292. The telescopic rod 291 extends to push the hinged plate 292 to press on the pipe sleeve 5, and cooperates with the receiving arc plate 24 to stamp the pipe sleeve 5 through the stamping block 28, so that the connection between the pipe sleeve 5 and the copper tube 4 is tighter and the sealing is better.

[0032] By rotatably installing the rotating plate 22 in the housing 1, on the one hand, the rotating plate 22 can be driven to rotate through the meshing action of the incomplete outer gear ring 25 and the driving gear 27, so that the notch faces upward, and the receiving arc plate 24 is used to receive the pipe sleeve 5 in the top sleeve 12, thereby facilitating the sleeve connection between the copper tube 4 and the pipe sleeve 5. On the other hand, the telescopic rod 291 in the auxiliary stamping mechanism 29 is extended to push the hinged plate 292 to press on the pipe sleeve 5 in which the copper tube 4 is inserted, and the stamping block 28 is used to act on the pipe sleeve 5 so that the copper tube 4 and the pipe sleeve 5 are tightly connected to prevent the copper tube 4 from slipping out of the pipe sleeve 5.

[0033] A holding frame 6 is symmetrically fixedly installed on the outer side of the shell 1. The holding frame 6 is provided to facilitate holding and placing, save time and effort, and is easy to carry. Example

[0034] According to Example 1, in Example 1, after the copper tube 4 and the tube sleeve 5 are sleeved, they can be tightly connected by embossing to achieve a sealing effect. However, when the tube sleeve 5 is in a fixed position, the copper tube 4 needs to be manually pushed to be inserted into the tube sleeve 5, which is inconvenient to control the insertion distance and affects the sealing effect. Figure 1-4 , 6-7, as another preferred embodiment of the present invention, based on embodiment 1, it also includes an insertion mechanism 3.

[0035] The insertion mechanism 3 is arranged on the rotating plate 22. The insertion mechanism 3 includes two sliding rods 31, an end plate 32, a bidirectional screw 33, and two movable racks 34. The two sliding rods 31 are symmetrically penetrated and fixed on the rotating plate 22. The end plate 32 is fixedly installed at both ends of the two sliding rods 31. The bidirectional screw 33 is rotatably penetrated and installed on the rotating plate 22 and the two ends are rotatably connected with the end plate 32. The two movable racks 34 are slidably sleeved on the two ends of the two sliding rods 31 and are threadedly connected with the two ends of the bidirectional screw 33. Claws are provided under the two movable racks 34. The claws under the two movable racks 34 can be inserted on the copper tube 4. The inner circular wall of the claws under the two movable racks 34 is provided with a slot, and a limiting ring 41 is fixedly installed on the outer circular wall of the copper tube 4 corresponding to the slot. The inner circumferential array of the slot on the inner circular wall of the claws under the movable rack 34 is rotatably arranged It is equipped with a rubber roller 35. When the corresponding limit ring 41 of the claw below the movable frame 34 is sleeved on the copper tube 4, the two-way screw 33 in the insertion mechanism 3 is controlled to rotate, and the threaded connection between the two-way screw 33 and the movable frame 34 is used to drive the movable frame 34 to move toward the middle. At this time, since the card groove in the claw below the movable frame 34 is clamped on the limit ring 41, the copper tube 4 can be driven to move toward the middle, thereby realizing the insertion of the copper tube 4 at both ends of the pipe sleeve 5. Compared with manual insertion, it is not only more accurate and synchronous insertion, but also the insertion depth can be accurately adjusted to ensure the sealing of the copper tube 4 connection, and the rubber roller 35 can also increase the friction with the outer wall of the copper tube 4, and can adapt to the contact between the rubber roller 35 and the copper tube 4 when the rotating plate 22 rotates, to prevent the copper tube 4 from rotating with it, or shaking and slipping.

[0036] The rotating plate 22 is divided in the middle, and an array of threads is inserted on the divided rotating plate 22 to connect with a connecting bolt 221. The rotating plate 22 is divided in the middle and connected by the connecting bolt 221, which makes it easy to install the gear ring 36 and the driving gear 37. A rotating groove is opened in the middle of the divided rotating plate 22 corresponding to the bidirectional screw 33. The bidirectional screw 33 is located in the rotating groove and is fixedly sleeved with a gear ring 36. A driving gear 37 is rotatably installed in the rotating groove. The gear ring 36 and the driving gear 37 are meshed for transmission. A motor 38 is fixedly installed on the outside of the rotating plate 22, and the output shaft of the motor 38 is fixedly connected to the driving gear 37 through the rotating plate 22. Example

[0037] According to Example 2, in Example 2, the two copper tubes 4 can be synchronously controlled to be inserted into the tube sleeve 5 and tightly connected by embossing to achieve a sealing effect. However, there is always a certain gap between the two copper tubes 4 and between them and the tube sleeve 5 at the microscopic level, which affects the sealing performance. Figure 2 As another preferred embodiment of the present invention, based on Example 2:

[0038] A rubber ring gasket 51 is fixedly installed in the middle of the inner circular wall of the pipe sleeve 5. The rubber ring gasket 51 can be sleeved on the end of the copper tube 4. When the rubber ring gasket 51 is set, when the copper tube 4 is inserted into the pipe sleeve 5, the two ends of the copper tube 4 synchronously squeeze the rubber ring gasket 51 towards the middle, thereby effectively reducing the gap between the two copper tubes 4, so that the connection between the copper tube 4 of the evaporator and other copper tubes is more sealed.

[0039] Installation of the copper tube 4 and the pipe sleeve 5: At this time, by controlling the rotation of the bidirectional screw 33, the two mobile frames 34 are driven to move outward and stop at the outermost end of the bidirectional screw 33. At this time, the notch of the rotating plate 22 is upward, and the telescopic rod 291 contracts, driving the hinged plate 292 to expand outward, opening the receiving arc plate 24, holding the holding frame 6, and clamping the claws under the mobile frame 34 on the limiting rings 41 of the two pre-placed copper tubes 4, and clamping them. At this time, the pipe sleeve 5 is placed in the top sleeve 12, and falls on the receiving arc plate 24 under the action of gravity.

[0040] Insertion of the copper tube 4: At this time, the control motor 38 is started, and the bidirectional screw 33 is driven to rotate through the meshing transmission of the gear ring 36 and the driving gear 37, and the two moving frames 34 are driven to move toward the middle through the threaded connection between the bidirectional screw 33 and the moving frame 34. At the same time, since the claws under the moving frame 34 are clamped on the limiting rings 41 of the two pre-placed copper tubes 4, the two copper tubes 4 can be driven to approach until they are slowly inserted into the two ends of the pipe sleeve 5 and conflict with the rubber ring gasket 51 to optimize the sealing effect.

[0041] After the pressing is completed, the telescopic rod 291 is controlled to retract, driving the hinged plate 292 to break away from the contact with the sleeve 5 and expand outward, and the driving motor is controlled to start, and the meshing connection between the driving gear 27 and the incomplete outer gear ring 25 drives the rotating plate 22 to rotate a certain angle, and then the telescopic rod 291 is controlled to extend again, driving the hinged plate 292 to cover the sleeve 5, and applying pressure on the sleeve 5 again through the pressing block 28. At the same time, the pressing block 28 of this time is consistent with the previous pressing, which mainly plays the purpose of uniform pressing. This step is repeated several times until the copper tube 4 and the sleeve 5 are pressed tightly.

[0042] Device dismantling: At this time, the notch of the rotating plate 22 is upward, the telescopic rod 291 contracts, driving the hinged plate 292 to expand outward, and then the holding frame 6 is grasped and lifted upward, so that the pipe sleeve 5 is separated from the contact with the receiving arc plate 24, and at the same time, the copper tube 4 is separated from the contact with the claws below the movable frame 34, thereby realizing the dismantling of the device and completing the sealed connection between the copper tube 4 of the primary evaporator and the copper tube 4 of other equipment.

[0043] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An evaporator automatic sealing device, comprising a housing (1), wherein copper tubes (4) are placed in limiting sleeves (11) at both ends of the housing (1), and characterized in that: Also includes: A receiving and stamping mechanism (2), the receiving and stamping mechanism (2) is arranged in the shell (1), the receiving and stamping mechanism (2) includes a slide (21), a rotating plate (22), a side guard (23), and a receiving arc plate (24), the slide (21) is fixedly installed in the middle of the shell (1), the inner wall of the slide (21) is correspondingly provided with a slide groove, the rotating plate (22) is rotatably installed in the shell (1), the rotating plate (22) is an incomplete circular ring, the side guard (23) is fixedly installed on the outer circular wall of the rotating plate (22), the side guard (23) rolls in the slide groove on the inner side of the slide (21), the receiving arc plate (24) is fixedly installed on the inner circular wall of the rotating plate (22), the shell (1) and the upper end of the slide (21) are provided with a material trough, the upper end of the material trough is fixedly provided with a top sleeve (12), and a pipe sleeve (5) is movably placed in the top sleeve (12); Auxiliary stamping mechanisms (29) are provided on both side walls of the notch of the rotating plate (22). The auxiliary stamping mechanisms (29) include a telescopic rod (291) and a hinged plate (292). The hinged plate (292) is hingedly mounted on the side walls of the notch of the rotating plate (22). One end of the telescopic rod (291) is hingedly connected to the side walls of the notch of the rotating plate (22). The other end of the telescopic rod (291) is hingedly connected to the hinged plate (292). The inner diameter of the hinged plate (292) is equal to the inner diameter of the receiving arc plate (24). An insertion mechanism (3) is provided on the rotating plate (22).

2. The evaporator automatic sealing device according to claim 1, characterized in that: A mounting groove is provided on the outer circular wall of the edge guard (23), and an incomplete outer gear ring (25) is fixedly installed in the mounting groove. Movable grooves (211) are symmetrically provided at both ends of the slide (21), and a mounting cover (26) is fixedly installed on the outer side of the movable groove (211). A driving gear (27) is rotatably installed in the mounting cover (26), and the driving gear (27) is meshed with the incomplete outer gear ring (25) for transmission. A driving motor is fixedly installed on one side of the mounting cover (26), and the output shaft of the driving motor passes through the mounting cover (26) and is fixedly connected to the driving gear (27).

3. The evaporator automatic sealing device according to claim 1, characterized in that: Stamping blocks (28) are fixedly mounted in a circular array on the inner circular walls of the receiving arc plate (24) and the hinge plate (292).

4. The evaporator automatic sealing device according to claim 1, characterized in that: A rubber ring gasket (51) is fixedly installed in the middle of the inner circular wall of the pipe sleeve (5), and the rubber ring gasket (51) can be sleeved on the end of the copper pipe (4).

5. The evaporator automatic sealing device according to claim 1, characterized in that: The insertion mechanism (3) includes two slide bars (31), an end plate (32), a bidirectional screw (33), and two movable frames (34). The two slide bars (31) are symmetrically passed through and fixedly mounted on the rotating plate (22). The end plate (32) is fixedly mounted at both ends of the two slide bars (31). The bidirectional screw (33) is rotatably passed through and mounted on the rotating plate (22) and its two ends are rotatably connected to the end plates (32). The two movable frames (34) are slidably sleeved on both ends of the two slide bars (31) and are threadedly connected to both ends of the bidirectional screw (33). Claws are provided below the two movable frames (34), and the claws below the two movable frames (34) can be inserted into the copper tube (4).

6. The evaporator automatic sealing device according to claim 5, characterized in that: The inner circular walls of the clamping claws below the two movable racks (34) are provided with clamping grooves, and a limiting ring (41) is fixedly installed on the outer circular wall of the copper tube (4) corresponding to the clamping grooves. The inner circumferential array of the clamping grooves of the inner circular walls of the clamping claws below the movable rack (34) is rotatably installed with a rubber roller (35).

7. The automatic sealing device for evaporator according to claim 5, characterized in that: The rotating plate (22) is split in the middle, and the split rotating plate (22) is provided with an array of threads inserted and connected with connecting bolts (221).

8. The evaporator automatic sealing device according to claim 7, characterized in that: A rotation groove is provided in the middle of the divided rotating plate (22) corresponding to the bidirectional screw (33). The bidirectional screw (33) is fixedly sleeved with a gear ring (36) at the rotation groove. A driving gear (37) is rotatably installed in the rotation groove. The gear ring (36) is meshed with the driving gear (37) for transmission. A motor (38) is fixedly installed on the outside of the rotating plate (22). The output shaft of the motor (38) is fixedly connected to the driving gear (37) through the rotating plate (22).

9. The automatic sealing device for evaporator according to claim 1, characterized in that: A holding frame (6) is symmetrically fixedly mounted on the outer side of the shell (1).

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