Highly wear-resistant friction pair and friction plate thereof

Abstract

The application discloses a high-wear-resistance friction pair and a friction plate thereof, and relates to the technical field of friction pairs, which comprises a friction spacer sleeve, a friction plate in contact with the outer periphery of the friction spacer sleeve and moving in a circular way around the central axis of the friction spacer sleeve, and a shell fixedly assembled on the side of the friction plate away from the friction spacer sleeve. The outer periphery surface of the friction spacer sleeve is processed with a micro-texture characteristic shape. An air guide cavity is formed in the shell. An air guide opening is arranged on the side of the air guide cavity facing the rotating direction of the friction plate. The recesses are uniformly processed on the friction spacer sleeve. Through the design of the recesses, on the one hand, the friction spacer sleeve has a certain friction coefficient, so that the friction damping of the friction plate and the friction spacer sleeve is improved, the adjustment range of the tension is improved, and on the other hand, the recesses can accommodate the micro-chips generated between the friction plate and the friction spacer sleeve. The application can not only prevent the increase of the friction damping of the friction plate and the friction spacer sleeve and the influence on the steel wire tension, but also can avoid the aggravation of the wear of the friction pair and prolong the service life of the friction pair.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of friction pairs, in particular to a high-wear-resistance friction pair and a friction plate thereof. BACKGROUND

[0002] The system composed of two objects that directly contact and produce relative friction motion is called a friction pair. It can be divided into sliding friction pairs and rolling friction pairs.

[0003] When the steel wire winding machine winds the steel wire braid layer on the outer covering of the rubber tube, a friction pair is arranged on the structure of the steel wire winding disc of the steel wire winding machine to adjust the tension. Specifically, when the steel wire winding disc structure is loaded on the large disc, the main shaft is fixed, the friction spacer sleeve and the main shaft are locked together, and the spool is in contact with the friction spacer sleeve through the friction plate. When the rubber tube is continuously moving, the steel wire is continuously pulled out to cover the rubber tube. The rotation of the spool makes the friction plate move around the central axis of the friction spacer sleeve to continuously produce friction with the friction spacer sleeve, forming friction damping, so that the steel wire is kept at a suitable tension adjustment during the covering process to prevent fluctuations in the tension of the steel wire, causing the steel wire braid layer to arch, loosen, and other quality problems. However, the friction pair structure described above will cause large wear of the friction plate and the friction spacer sleeve during long-term use. In order to maintain the stability of the steel wire tension and avoid the quality problems such as arching and loosening of the steel wire braid layer, the friction plate needs to be frequently replaced and adjusted. SUMMARY

[0004] The present application aims to provide a high-wear-resistance friction pair and a friction plate thereof to solve the problems raised in the background.

[0005] To achieve the above-mentioned application purposes, the present application adopts the following technical solutions:

[0006] The present application provides a high-wear-resistance friction pair, which comprises a friction spacer sleeve and a friction plate that is in contact with the outer periphery of the friction spacer sleeve and moves around the central axis of the friction spacer sleeve. The outer periphery surface of the friction spacer sleeve is processed with a micro-texture feature shape. The micro-texture feature shape comprises a groove, which is equidistantly arranged on the outer side of the friction spacer sleeve in the circumferential direction. The length direction of the groove is parallel to the central axis of the friction spacer sleeve, and the length of the groove is greater than the length of the friction plate. The width of the groove from the middle to both ends is continuously increasing, and the side edges of the length direction of the groove are symmetrical to each other.

[0007] Further, the grooves on the outer periphery surface of the friction spacer sleeve are symmetrical to each other with the set plane as the symmetrical plane, and the set plane does not pass through the grooves.

[0008] Further, the side edges of the length direction of the groove are arc-shaped.

[0009] Further, the depth of the groove increases from the middle to the two ends.

[0010] The application also provides a friction plate, which is fixedly assembled with a shell away from one side of a friction spacer, an air induction cavity is formed in the shell, an air induction opening is arranged on one side of the air induction cavity in the rotation direction of the friction plate, the cross section of the air induction cavity decreases from the air induction opening to the end away from the rotation direction, an air outlet hole is arranged through the friction plate at the end of the air induction cavity away from the air induction opening, the air outlet hole corresponds to the middle part of the groove, and a strip-shaped through groove is arranged through the friction plate at the end close to the friction spacer, and the strip-shaped through groove is parallel to the central axis of the friction spacer.

[0011] Further, the cross section of the strip-shaped through groove decreases from the air outlet hole to the two ends.

[0012] Further, a liquid containing tank is arranged at the middle position of the air induction opening of the air induction cavity, the top and bottom of the liquid containing tank are fixedly connected with the top wall and bottom wall of the air induction cavity, air inlet gaps are arranged between the two sides of the liquid containing tank and the air induction cavity, a liquid absorbing member is arranged in the liquid containing tank, the liquid absorbing member has a liquid absorbing part in the liquid containing tank, an evaporation part in the air inlet gap, and a transmission part connected between the evaporation part and the liquid absorbing part.

[0013] Further, the cross section of the air inlet gap decreases from the air induction opening to the air outlet hole.

[0014] Further, the liquid absorbing member comprises a liquid absorbing tube horizontally arranged through the liquid containing tank, a spherical evaporation shell connected at the two ends of the liquid absorbing tube, and liquid absorbing cotton filled in the liquid absorbing tube and the spherical evaporation shell, liquid absorbing holes are uniformly arranged at the middle position of the liquid absorbing tube, evaporation holes are uniformly arranged on the upper part of the spherical evaporation shell, the liquid absorbing cotton in the spherical evaporation shell has a cavity in the center, and a squeezing ball is arranged in the cavity.

[0015] Further, the liquid absorbing tube is arranged at the center position of the spherical evaporation shell, the liquid containing tank contains lubricating oil, the liquid level of the lubricating oil is lower than the height of the liquid absorbing tube, a liquid supplementing tube is arranged on the top of the liquid containing tank, and a cover is threadedly connected on the liquid supplementing tube.

[0016] Compared with the prior art, the above one or more technical solutions have the following beneficial effects:

[0017] The present application can accommodate the micro-chips between the friction plate and the friction spacer through the design of the groove, which can not only prevent the increase of the friction damping of the friction plate and the friction spacer, and affect the steel wire tension, but also avoid the aggravation of the wear of the friction pair, and prolong the service life of the friction pair.

[0018] The present application can accommodate the micro-chips between the friction plate and the friction spacer through the design of the groove, which can not only prevent the increase of the friction damping of the friction plate and the friction spacer, and affect the steel wire tension, but also avoid the aggravation of the wear of the friction pair, and prolong the service life of the friction pair.

[0019] The present application can accommodate the micro-chips between the friction plate and the friction spacer through the design of the groove, which can not only prevent the increase of the friction damping of the friction plate and the friction spacer, and affect the steel wire tension, but also avoid the aggravation of the wear of the friction pair, and prolong the service life of the friction pair.

[0020] The present application can accommodate the micro-chips between the friction plate and the friction spacer through the design of the groove, which can not only prevent the increase of the friction damping of the friction plate and the friction spacer, and affect the steel wire tension, but also avoid the aggravation of the wear of the friction pair, and prolong the service life of the friction pair.

[0021] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0022] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the description of the exemplary embodiments of the present application and the explanation thereof serve to explain the present application, and do not constitute an improper limitation of the present application.

[0023] Figure 1 is a friction pair structure schematic diagram of the present application;

[0024] Figure 2 is a micro-chip moving schematic diagram in the groove of the present application;

[0025] Figure 3 is a friction spacer side view structure schematic diagram of the present application;

[0026] Figure 4 is a side view structure schematic diagram of the friction spacer sleeve of the present application;

[0027] Figure 5 is a front view structure schematic diagram of the friction spacer sleeve of the present application;

[0028] Figure 6 is a sectional view structure schematic diagram of the steel wire winding disc structure of the steel wire winding machine in the prior art;

[0029] Figure 7 is a schematic diagram of the steel wire winding disc structure loaded on a large disc;

[0030] Figure 8 is a schematic diagram of the combination structure of the friction plate and the friction spacer sleeve of the present application;

[0031] Figure 9 is a first view structure schematic diagram of the friction plate of the present application;

[0032] Figure 10 is a second view structure schematic diagram of the friction plate of the present application;

[0033] Figure 11 is a structure schematic diagram of the liquid absorbing member of the present application.

[0034] In the drawings:

[0035] 100, friction spacer sleeve; 110, groove; 111, side edge; 112, middle part;

[0036] 200, friction plate; 210, shell; 220, air guiding cavity; 230, air guiding opening; 240, air outlet hole; 250, strip-shaped through groove; 260, liquid containing tank; 270, liquid absorbing member; 271, liquid absorbing pipe; 272, spherical evaporation shell; 273, liquid absorbing cotton; 274, liquid absorbing hole; 275, evaporation hole; 276, cavity; 277, extruded ball. DETAILED DESCRIPTION

[0037] In order to make the person skilled in the art better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present application.

[0038] Please refer to Figures 1-7 The present application provides a high wear-resistant friction pair, which comprises a friction spacer sleeve 100 and a friction plate 200 which is in contact with the outer periphery of the friction spacer sleeve 100 and makes circular motion around the central axis of the friction spacer sleeve 100.

[0039] The friction pair in this technical solution is a sliding friction pair, which is applied to the wire winding disc structure of the wire winding machine and mainly plays the role of controlling the tension adjustment during the release process of the wire (such as Figure 6 (See Figure 2, which is a cross-sectional view of a wire winding drum structure of a wire winding machine in the prior art.) The tension control principle is as follows: when the wire winding drum structure is loaded onto a large drum, the main shaft is fixed, the friction spacer 100 and the main shaft are locked together, and the spool is in contact with the friction spacer 100 via the friction plate 200. As the hose continuously moves, the steel wire is continuously pulled and wrapped around the hose. During this process, the spool rotates, causing the friction plate 200 to perform a circular motion around the central axis of the friction spacer 100, continuously generating friction with the friction spacer 100, forming friction damping, so that the steel wire is maintained at an appropriate tension adjustment during the process of being pulled and wrapped around the hose.

[0040] According to the tension control principle, when the steel wire is wound around the disc, the friction damping generated by the friction between the friction plate 200 and the friction spacer 100 is used to achieve tension control. Therefore, during the long-term friction between the friction plate 200 and the friction spacer 100, the friction plate 200 is bound to wear. This wear causes micro-chips to be generated between the friction plate 200 and the friction spacer 100. The micro-chips located between the friction plate 200 and the friction spacer 100 not only increase the friction damping of the friction plate 200 and the friction spacer 100, thereby affecting the instability of the steel wire tension, but also increase the friction between the friction plate 200 and the friction spacer 100, aggravating the wear of the friction pair and reducing the service life of the friction pair.

[0041] For this reason, Figure 1 As shown, in this technical solution, the outer surface of the friction spacer 100 is machined with micro-texture features, including grooves 110, which are equidistantly arranged along the circumference of the outer side of the friction spacer 100. The design of these grooves 110, on the one hand, gives the friction spacer 100 a certain friction coefficient, thereby improving the friction damping between the friction plate 200 and the friction spacer 100 and increasing the tension adjustment range. On the other hand, the grooves 110 can accommodate micro-chips generated between the friction plate 200 and the friction spacer 100, preventing the increase in friction damping between the friction plate 200 and the friction spacer 100 and affecting the wire tension, and also preventing increased wear of the friction pair, thereby extending the service life of the friction pair.

[0042] Considering the size of the groove 110, i.e. the limited storage of the micro debris in the groove 110, further, the length direction of the groove 110 is parallel to the central axis of the friction spacer 100, and the length of the groove 110 is greater than the length of the friction plate 200, the width of the groove 110 from the middle part 112 to both ends is constantly increasing, and the side edges 111 of the length direction of the groove 110 are symmetrical to each other, and the side edges 111 of the length direction of the groove 110 are arc-shaped.

[0043] As shown in Figure 2 , as the micro debris in the friction area between the friction plate 200 and the friction spacer 100 increases, when the groove 110 is too much, due to the arc-shaped side edges 111 of the length direction of the groove 110, the movement of the friction plate 200 makes the micro debris inside the groove 110 move to both ends of the groove 110 along the arc-shaped side edges 111, i.e. the micro debris moves out of the friction area between the friction plate 200 and the friction spacer 100, so that the groove 110 in the friction area between the friction plate 200 and the friction spacer 100 can constantly store micro debris, thereby reducing the wear of the friction pair and prolonging the service life of the friction pair.

[0044] In order to better make the micro debris stored inside the groove 110 move to both ends, the depth of the groove 110 from the middle part 112 to both ends is constantly increasing. The movement of the friction plate 200 can make the micro debris inside the groove 110 better move to both ends of the groove 110 along the arc-shaped side edges 111 and the bottom edge with a better inclination angle.

[0045] Further, in combination with Figure 1 , Figure 3 and Figure 4 , a plane passing through the central axis of the friction spacer 100 is set as a setting plane L, the grooves 110 on the outer circumferential surface of the friction spacer 100 are symmetrical to each other with the setting plane L as the symmetrical plane, and the setting plane does not pass through the groove 110.

[0046] As shown in Figure 7 , when the friction spacer 100 is installed, the setting plane L is kept parallel to the large disc, and during the continuous rotation of the large disc, as shown in Figure 5When the friction spacer 100 is in a horizontal state, at least one end of each side edge 111 of each groove 110 of the friction spacer 100 is lower than the height of the middle part 112 of the groove 110, so that the micro debris can be removed from the friction area between the friction plate 200 and the friction spacer 100 under the action of gravity. When the friction spacer 100 is in a horizontal state again after rotating 180 degrees, similarly, at least one end of each side edge 111 of each groove 110 of the friction spacer 100 is lower than the height of the middle part 112 of the groove 110, and during the rotation of the friction spacer 100 by 180 degrees, at least one end of each side edge 111 of each groove 110 of the friction spacer 100 is lower than the height of the middle part 112 of the groove 110, so that the micro debris can be removed from the friction area between the friction plate 200 and the friction spacer 100 under the action of gravity.

[0047] As shown in Figures 8-11 The application also provides a friction plate 200 used in a high-wear-resistance friction pair, which can move in a circular motion around the central axis of the friction spacer 100 and in one direction, and is fixedly arranged with a shell 210 on the side away from the friction spacer 100. The shell 210 forms an air guide cavity 220 inside, and an air guide opening 230 is arranged on the side of the air guide cavity 220 in the rotating direction of the friction plate 200. The cross section of the air guide cavity 220 decreases continuously from the air guide opening 230 to the side away from the rotating direction. An air outlet hole 240 is formed through the friction plate 200 on the side away from the air guide opening 230, and the air outlet hole 240 is in communication with the air guide cavity 220 and corresponds to the middle part 112 of the groove 110.

[0048] When the friction plate 200 moves, air can pass through the air guide opening 230 and flow along the air guide cavity 220. Since the cross section of the air guide cavity 220 decreases continuously from the air guide opening 230 to the side away from the rotating direction, the air flow rate in the air guide cavity 220 increases continuously until the air is discharged from the air outlet hole 240. After the air is discharged from the air outlet hole 240, it flows to both ends of the groove 110 after entering the middle part 112 of the groove 110, which not only enables the micro debris stored in the groove 110 to be removed from the friction area between the friction plate 200 and the friction spacer 100 rapidly, but also accelerates the heat dissipation of the friction plate 200 and the friction spacer 100.

[0049] Further, as shown in Figure 10 A strip-shaped through groove 250 is arranged through the friction plate 200 on the side close to the friction spacer 100 and parallel to the central axis of the friction spacer 100. When the air outlet hole 240 moves to between two adjacent grooves 110 during the continuous movement of the friction plate 200, the air flowing in the through hole can flow along the strip-shaped through groove 250 and discharge the micro debris between the two adjacent grooves 110.

[0050] Further, the cross section of the strip-shaped through groove 250 is gradually reduced from the air outlet hole 240 to both ends. The flow rate of air in the strip-shaped through groove 250 can be improved, and the speed of the micro debris discharge is further accelerated.

[0051] In order to further reduce the wear of the friction pair, prolong the service life of the friction pair, and at the same time, avoid the micro debris from being scattered after being discharged, causing the micro debris to move to the friction area between the friction plate 200 and the friction sleeve 100 again, a liquid containing tank 260 is arranged at the middle position of the air inlet 230 of the air guide cavity 220 in the technical solution. The top and bottom of the liquid containing tank 260 are fixedly connected with the top wall and the bottom wall of the air guide cavity 220 respectively, and the two sides of the liquid containing tank 260 have air inlet gaps with the air guide cavity 220. The inside of the liquid containing tank 260 is provided with a liquid absorbing member 270. The liquid absorbing member 270 has a liquid absorbing part located in the liquid containing tank 260, an evaporation part located in the air inlet gap, and a transmission part connected between the evaporation part and the liquid absorbing part.

[0052] The liquid absorbing member 270 can absorb the lubricating oil in the liquid containing tank 260 through the liquid absorbing part and enter the evaporation part through the transmission part. When the air enters the air inlet gap between the air guide cavity 220 and the liquid containing tank 260 from the air inlet 230, the lubricating oil in the evaporation part can be evaporated and enter the air inlet 230 together with the flowing air, so that the friction plate 200 and the friction sleeve 100 have a certain lubricity, and the wear of the friction plate 200 and the friction sleeve 100 is reduced. At the same time, the gaseous lubricating oil makes the micro debris in the groove 110 have a certain adhesion, so that the micro debris can be adsorbed in the groove 110 at both ends after being discharged to both ends of the groove 110, avoiding the micro debris from being scattered after being discharged, causing the micro debris to move to the friction area between the friction plate 200 and the friction sleeve 100 again.

[0053] It should be noted that since the lubricating oil is brought into the friction plate 200 and the friction sleeve 100 by the air during evaporation, the content of the lubricating oil is very small, and the lubricating oil will evaporate quickly under the friction and heating of the friction plate 200 and the friction sleeve 100. Secondly, since the groove 110 exists, the lubricating oil will enter the groove 110, so the friction damping between the friction plate 200 and the friction sleeve 100 will not be reduced.

[0054] Further, the cross section of the air inlet gap is gradually reduced from the air inlet 230 to the air outlet hole 240. The flow rate of air entering the air inlet 230 can be further improved, and the speed of the micro debris discharge is further improved.

[0055] Specifically, as shown in FIG. 6, the cross section of the air inlet gap is gradually reduced from the air inlet 230 to the air outlet hole 240. Figure 11As shown, the liquid suction member 270 includes a liquid suction pipe 271 horizontally penetrating the liquid tank 260, a spherical evaporation shell 272 connected at both ends of the liquid suction pipe 271, and a liquid absorbing cotton 273 filled in the liquid suction pipe 271 and the spherical evaporation shell 272, wherein the middle position of the liquid suction pipe 271 is uniformly provided with a liquid suction hole 274, and the upper portion of the spherical evaporation shell 272 is uniformly provided with an evaporation hole 275.

[0056] The lubricating oil in the liquid tank 260 enters the liquid suction pipe 271 through the liquid suction hole 274 and is adsorbed into the spherical evaporation shell 272 by the capillary adsorption of the liquid absorbing cotton 273. With the air entering the air inlet gap, the lubricating oil adsorbed by the liquid absorbing cotton 273 in the spherical evaporation shell 272 will be evaporated with the air entering the air outlet hole 240.

[0057] Further, the liquid absorbing cotton 273 in the spherical evaporation shell 272 has a cavity 276 in the center, and an extrusion ball 277 is placed in the cavity 276. With the continuous movement of the friction plate 200, the extrusion ball 277 continuously moves in the cavity 276, extruding the liquid absorbing cotton 273 in the spherical evaporation shell 272, so that the lubricating oil in the liquid absorbing cotton 273 is continuously discharged from the evaporation hole 275 and distributed on the surface of the spherical evaporation shell 272 to be quickly evaporated.

[0058] Further, the liquid suction pipe 271 is arranged at the center of the spherical evaporation shell 272, the liquid tank 260 is filled with lubricating oil, and the liquid level of the lubricating oil is lower than the height of the liquid suction pipe 271. The top of the liquid tank 260 is provided with a liquid supplement pipe, and a cover is threadedly connected to the liquid supplement pipe. The lubricating oil in the liquid tank 260 can be supplemented through the liquid supplement pipe, and the liquid level of the supplemented lubricating oil should be lower than the height of the liquid suction pipe 271. In this way, when the friction plate 200 is not working, i.e. the friction plate 200 is not moving, the liquid tank 260 will not enter the liquid suction pipe 271 through the liquid suction hole 274, avoiding the evaporation of the lubricating oil in the liquid tank 260. Only when the friction plate 200 is moving, the lubricating oil in the liquid tank 260 will be transmitted into the spherical evaporation shell 272 through the continuous rolling and splashing into the liquid suction hole 274, avoiding waste.

[0059] The above description is only the preferred embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can make equivalent replacement or change according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A highly wear-resistant friction pair comprising a friction sleeve and a friction plate that contacts the outer periphery of the friction sleeve and moves in a circular motion around the central axis of the friction sleeve, characterized in that: The outer circumferential surface of the friction spacer is processed with a micro-texture feature shape, and the micro-texture feature shape includes a groove. The grooves are arranged at equal intervals along the circumferential direction on the outer side of the friction spacer. The length direction of the groove is parallel to the central axis of the friction spacer, and the length of the groove is greater than the length of the friction plate. The width of the groove increases continuously from the middle to its two ends, and the sides of the groove in the length direction are symmetrical to each other.

2. The high wear-resistant friction pair according to claim 1, characterized in that: A plane passing through the central axis of the friction spacer is used as a setting plane, and the grooves on the outer peripheral surface of the friction spacer are symmetrical with each other with the setting plane as a symmetry plane, and the setting plane does not pass through the grooves.

3. The high wear-resistant friction pair according to claim 2, characterized in that: The side edges of the groove in the length direction are arc-shaped.

4. The high wear-resistant friction pair according to claim 2, characterized in that: The depth of the groove increases gradually from the middle to both ends.

5. A friction plate for the high wear-resistant friction pair according to claim 1, characterized in that: The friction plate is fixedly assembled with a shell on the side away from the friction spacer, and an air induced cavity is formed inside the shell. The air induced cavity is provided with an air induced port on the side facing the rotation direction of the friction plate, and the cross-section of the air induced cavity decreases continuously from the air induced port toward the direction away from the rotation direction. An air outlet hole connected to the air induced cavity is formed through the friction plate at the end of the air induced cavity away from the air induced port, and the air outlet hole corresponds to the middle part of the groove. A strip through groove parallel to the central axis of the friction spacer is formed through the friction plate at the end of the air outlet close to the friction spacer.

6. The friction plate according to claim 5, characterized in that The cross section of the strip-shaped through groove decreases gradually from the air outlet to both ends thereof.

7. The friction plate according to claim 5, characterized in that: A liquid storage box is provided at the middle position of the air inlet of the air inlet cavity, the top and bottom of the liquid storage box are fixedly connected to the top wall and bottom wall of the air inlet cavity respectively, and there is an air inlet gap between the two sides of the liquid storage box and the air inlet cavity, and a liquid absorption part is provided inside the liquid storage box, and the liquid absorption part has a liquid absorption part located in the liquid storage box, an evaporation part located in the air inlet gap, and a transmission part connected between the evaporation part and the liquid absorption part.

8. The friction plate according to claim 7, characterized in that: The cross section of the air inlet gap decreases continuously from the air inlet to the air outlet.

9. The friction plate according to claim 7, characterized in that: The liquid absorption component includes a liquid absorption tube horizontally passing through the liquid storage box, a spherical evaporation shell connected to both ends of the liquid absorption tube, and liquid absorption cotton filled in the liquid absorption tube and the spherical evaporation shell. Liquid absorption holes are evenly opened in the middle position of the liquid absorption tube, and evaporation holes are evenly arranged on the top of the spherical evaporation shell. The liquid absorption cotton inside the spherical evaporation shell has a cavity in the center, and a squeezing ball is placed in the cavity.

10. The friction plate according to claim 9, characterized in that: The liquid suction pipe is arranged at the center of the spherical evaporation shell. The liquid storage box is filled with lubricating oil, and the liquid level of the lubricating oil is lower than the height of the liquid suction pipe. The top of the liquid storage box is provided with a liquid replenishing pipe, and the liquid replenishing pipe is threadedly connected to a cover body.

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