A compact mercury lamp envelope for UV curing equipment

Abstract

The utility model discloses a compact mercury lamp lampshade for UV curing equipment. The utility model relates to mercury lamp lampshade technical field, and this includes the shell, is equipped with the lamp stand in the shell, and the mercury lamp is installed in the lamp stand, the lamp stand both sides are equipped with the reflector respectively, is equipped with the drive mechanism that drives two reflectors to open and shut in the shell, is equipped with the air extraction hole in the lamp stand, the shell is equipped with the circulating water cooling device still, and the circulating water cooling device includes: the water inlet channel and the return water channel of a plurality of in the lamp stand inside being set up. This through the water inlet channel, the return water channel is directly set up in the lamp stand inside, and the cooling water channel is built into the reflector, and simultaneously through the water distribution block unified distribution and recovery cooling water, make the cooling water can directly flow through the lamp stand and the reflector, thereby form the heat dissipation path of the whole coverage, effectively control the working temperature of the lamp stand and the reflector, and then guarantee the stability of mercury lamp ultraviolet output, prolong the service life of mercury lamp and reflector.

Description

Technical Field

[0001] This utility model relates to the field of mercury lamp cover technology, specifically a compact mercury lamp cover for UV curing equipment. Background Technology

[0002] UV printing is a type of printing equipment that uses ultraviolet light to dry and cure ink. It requires ink containing photosensitizers to be used in conjunction with UV curing lamps. The application of UV printing is one of the most important aspects of the printing industry. In the field of UV curing equipment, mercury lamps are the core curing light source. They generate a lot of heat during operation, and it is necessary to ensure the efficiency of ultraviolet output and the stability of equipment operation.

[0003] For example, Chinese patent application CN108870346B discloses a heat dissipation and energy-saving UV mercury lamp box, which includes a shell and a lamp holder. The shell has a rectangular structure, with one end closed and the other end open. The side of the shell is provided with several first ventilation holes. The open end is provided with a fan for generating negative pressure. The water cooling device includes a cooling shell with water cooling pipes inside, which are connected to an external water supply system. The positions of the first ventilation holes correspond to the lamp holder for heat dissipation. When the mercury lamp is working, the negative pressure generated by the fan allows air to flow through the first ventilation holes for heat dissipation. The rate of heat dissipation is controlled by controlling the magnitude of the negative pressure generated by the fan. Furthermore, the water flowing through the water cooling pipes can further dissipate heat from the lamp holder, resulting in better heat dissipation.

[0004] Regarding the aforementioned technologies, the inventors believe that the following defects exist: although the introduction of fans, air cooling, bottom water cooling of the slide rail, and focusing glass are used to improve heat dissipation and energy saving, the water cooling structure is mostly external or has a simple pipeline layout, which results in poor heat dissipation of the mercury lamp box. Heat easily accumulates inside the lamp box, leading to a shortened lifespan of the mercury lamp. Thus, the problem of low heat dissipation efficiency is not fundamentally solved. In view of this, an LED-UV curing system for high-speed rotary machines is proposed to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a compact mercury lamp cover for UV curing equipment. By directly opening the water inlet and return channels inside the lamp holder and embedding the cooling water channel into the reflector, and by uniformly distributing and recycling the cooling water through a water distribution block, the cooling water can flow directly through the lamp holder and the reflector, thereby forming a heat dissipation path that covers the entire area and effectively controlling the working temperature of the lamp holder and the reflector.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a compact mercury lamp cover for UV curing equipment, comprising an outer shell, a lamp holder inside the outer shell, and a mercury lamp inside the lamp holder; reflectors are respectively provided on both sides of the lamp holder, a driving mechanism for opening and closing the two reflectors is provided inside the outer shell, and an exhaust hole is provided inside the lamp holder; a circulating water cooling device is also provided inside the outer shell; the circulating water cooling device includes: several inlet channels and several return channels opened inside the lamp holder, a water distribution block provided inside the outer shell for distributing and recovering cooling water; several cooling water channels provided inside the reflectors, and connecting block assemblies provided at both ends of the reflectors;

[0009] The lamp holder is equipped with a front support plate and a rear support plate, both of which have water storage chambers. Each support plate has two hollow rotating shafts running through it, and the two hollow rotating shafts correspond one-to-one with the two reflectors on both sides of the lamp holder. One end of the hollow rotating shaft is sealed, and the other end is fixedly connected to the connecting block assembly. The water inlet channel is connected to the water storage chamber of the front support plate to supply water. The side wall of the hollow rotating shaft has a water delivery hole that is connected to the cooling water channel of the water storage chamber and the reflector. The water storage chamber of the rear support plate is connected to the cooling water channel of the reflector and the return water channel of the lamp holder in sequence to drain the cooling water. A rotary seal is provided between the hollow rotating shaft and the through hole of each support plate to achieve sealed transmission of cooling water when the reflector rotates.

[0010] As a further preferred embodiment, the rotary seal is a Gladstone ring, and at least two Gladstone rings are provided between the hollow shaft and each through hole of the support plate, with the two Gladstone rings arranged at an axial interval along the hollow shaft.

[0011] As a further preferred embodiment, the number of water inlet channels is two, the number of water return channels is two, the two water inlet channels are opened in parallel on the outer area inside the lamp holder, and the two water return channels are opened in parallel on the inner area inside the lamp holder, and the water inlet channels and the water return channels are not connected to each other.

[0012] As a further preferred embodiment, a silicone sealing gasket is provided between the end of the connecting block assembly and the reflector. The shape of the silicone sealing gasket is adapted to the end face shape of the connecting block assembly, and an avoidance hole corresponding to the water passage of the hollow rotating shaft is provided on the silicone sealing gasket.

[0013] As a further preferred embodiment, the inner wall of the hollow rotating shaft has a smooth surface; the number of water delivery holes is at least two, and they are evenly distributed along the circumference of the hollow rotating shaft.

[0014] As a further preferred embodiment, the water distribution block is provided with a main water inlet and a main water return outlet. The main water inlet is connected to all the water inlet channels of the lamp holder through an internal flow channel, and the main water return outlet is connected to all the water return channels of the lamp holder through an internal flow channel. Furthermore, a filter screen is provided in the internal flow channel of the water distribution block.

[0015] As a further preferred embodiment, the reflector contains at least two cooling channels, all of which are arranged parallel to each other along the length of the reflector and extend to cover the entire heat-generating area of ​​the reflector; the cross-sectional shape of the cooling channels is semi-circular or rectangular.

[0016] As a further preferred embodiment, the number of ventilation holes is several, and they are evenly distributed along the length of the lamp holder.

[0017] As a further preferred embodiment, the driving mechanism includes a cylinder, which is a rotary cylinder, and the rotary cylinder is fixed to one end of the inner side of the housing;

[0018] The output shaft of the rotary cylinder is fixedly connected to the hollow rotating shaft of the end connecting block of one side of the reflector, and a drive gear is also fixed on the rotating shaft; the drive gear meshes with the driven gear fixed at the end of the hollow rotating shaft on the other side of the reflector, so that the reflector stays at any opening angle.

[0019] (III) Beneficial Effects

[0020] This invention provides a compact mercury lamp cover for UV curing equipment. It offers the following advantages:

[0021] 1. This compact mercury lamp cover for UV curing equipment features water inlet and return channels directly inside the lamp holder, and a cooling water channel integrated into the reflector. Simultaneously, a water distribution block unifies the distribution and recycling of cooling water, allowing it to flow directly through the lamp holder and reflector. This creates a comprehensive heat dissipation path, effectively controlling the operating temperature of the lamp holder and reflector, thereby ensuring the stability of the mercury lamp's UV output and extending the lifespan of the mercury lamp and reflector.

[0022] 2. This compact mercury lamp cover for UV curing equipment features a hollow rotating shaft with a rotary seal, located between the front and rear support plates of the lamp holder and the end connecting block assembly of the reflector. Combined with the water storage cavity within the support plate and the cooling water channel built into the reflector, a closed-loop water cooling path is formed. This ensures that the rotary seal tightly fits the gap between the hollow rotating shaft and the through hole of the support plate, preventing cooling water leakage when the reflector rotates and opens with the drive mechanism, and ensuring the long-term reliable operation of the circulating water cooling system under dynamic conditions. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the side cross-sectional structure of this utility model;

[0026] Figure 4 This is a schematic diagram of the front view of the structure of this utility model;

[0027] Figure 5 This is a schematic diagram of the top view of the present invention;

[0028] Figure 6 This utility model Figure 4 Enlarged view of point A in the middle;

[0029] Figure 7 This utility model Figure 5 Enlarged view of point A in the middle;

[0030] Figure 8 This is a structural diagram showing the flow direction of the water inlet channel and the water return channel of this utility model.

[0031] In the diagram: 1. Outer shell; 2. Lamp holder; 3. Reflector; 4. Drive mechanism; 5. Exhaust vent; 6. Circulating water cooling device; 7. Water inlet channel; 71. Water return channel; 8. Water distribution block; 9. Cooling water channel; 10. Connecting block assembly; 11. Front support plate; 12. Rear support plate; 13. Water storage chamber; 14. Hollow rotating shaft; 15. Water inlet; 16. Glyd ring; 17. Rotary seal; 18. Cylinder; 19. Drive gear; 20. Driven gear; 21. Main water inlet; 22. Main water return outlet. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] like Figure 1-8As shown, this utility model provides a technical solution: a compact mercury lamp cover for UV curing equipment, including a shell 1, a lamp holder 2 inside the shell 1, and a mercury lamp inside the lamp holder 2. Reflectors 3 are respectively provided on both sides of the lamp holder 2, symmetrically arranged on both sides of the lamp holder 2. Their inner sides have an arc-shaped structure adapted to ultraviolet reflection, and they are rotatably connected to the front and rear support plates 11 and 12 of the lamp holder 2 via hinges. A drive mechanism 4 is provided inside the shell 1 to drive the opening and closing of the two reflectors 3. An exhaust port 5 is provided inside the lamp holder 2. When the mercury lamp is working, an external exhaust fan extracts the hot air and ozone generated by the mercury lamp from the airflow at the bottom of the lamp holder 2. A circulating water cooling device 6 is also provided inside the shell 1. The outer shell 1 is a compact shell adapted for installation of UV curing equipment. Its interior forms a closed cavity to accommodate core components such as lamp holder 2 and reflector 3. The circulating water cooling device 6 includes: several water inlet channels 7 and several water return channels 71 opened inside the lamp holder 2, a water distribution block 8 located inside the outer shell 1 for distributing and recovering cooling water, several cooling water channels 9 located inside the reflector 3, and connecting block assemblies 10 located at both ends of the reflector 3.

[0034] The lamp holder 2 is provided with a front support plate 11 and a rear support plate 12. Both the front and rear support plates 11 and 12 have water storage chambers 13. Two hollow rotating shafts 14 are threaded through each support plate, corresponding one-to-one with two reflectors 3 on either side of the lamp holder 2. One end of each hollow rotating shaft 14 is sealed, and the other end is fixedly connected to the connecting block assembly 10. A water inlet channel 7 connects to the water storage chamber 13 of the front support plate 11 for water supply. A water delivery hole 15 is provided on the side wall of the hollow rotating shaft 14, connecting to the water storage chamber 13 and the cooling water channel 9 of the reflector 3. The water storage chamber 13 of the rear support plate 12 is sequentially connected to the cooling water channel 9 of the reflector 3 and the return water channel 71 of the lamp holder 2 to drain the cooling water. A rotary seal 17 is provided between the hollow rotating shaft 14 and the through holes of each support plate to achieve sealed transmission of cooling water when the reflector 3 rotates.

[0035] In use, cooling water is fed into the main inlet 21 of the water distribution block 8 from an external water supply device, and then distributed to several water inlet channels 7 inside the lamp holder 2 via the internal flow channels of the water distribution block 8. The water inlet channels 7 deliver the cooling water to the water storage cavity 13 of the front support plate 11, allowing the cooling water to enter the hollow rotating shaft 14 evenly through the water delivery holes 15 on the side wall of the hollow rotating shaft 14. Since the hollow rotating shaft 14 is fixedly connected to the connecting block assembly 10, the cooling water enters the cooling water channel 9 inside the reflector 3 along the hollow rotating shaft 14, indirectly cooling the mercury lamp inside the reflector 3. After cooling, the cooling water flows out from the cooling water channel 9 of the reflector 3, enters the water storage cavity 13 of the rear support plate 12, and then flows through the return water channel 71 of the lamp holder 2 to the main return water inlet 22 of the water distribution block 8, and is finally discharged to the external cooling circulation system, forming a complete closed-loop water cooling circuit.

[0036] The principle of coordinated rotation and sealing of reflector 3: When the drive mechanism 4 drives reflector 3 to rotate around the hollow shaft 14 on the front and rear support plates 11 and 12, the hollow shaft 14 rotates synchronously with reflector 3. When the drive mechanism 4 drives reflector 3 to open and close, reflector 3 drives the connecting block assemblies 10 at both ends to rotate synchronously. Since the hollow shaft 14 is fixedly connected to the connecting block assembly 10, it rotates around the through hole of the support plate. At this time, the hollow shaft 14 acts as the rotation hinge axis of reflector 3, providing it with support force. At the same time, the cooling water in the water storage cavity 13 of the front support plate 11 flows into its internal channel through the water inlet 15 on the side wall of the hollow shaft 14, and is transported to the cooling water channel 9 of reflector 3 along the channel. After cooling reflector 3, it flows out from the hollow shaft 14 at the other end to the water storage cavity 13 of the rear support plate 12, and finally flows into the return water channel 71 for discharge. Throughout the process, the hollow rotating shaft 14 completes the rotation and water delivery functions. In addition, there is no need to set up additional redundant components such as rotating joints and external hoses, which simplifies the structure and improves the compactness of the device.

[0037] Because a rotary seal 17 is provided between the hollow rotating shaft 14 and the through hole of the support plate, the seal can always fit tightly against the outer wall of the rotating shaft and the hole wall of the support plate during the rotation of the shaft, blocking the path of cooling water leakage from the gap, and ensuring that the water cooling circuit can still maintain a reliable seal when rotating.

[0038] The rotary seal 17 is a Glyd ring 16, and at least two Glyd rings 16 are provided between the hollow shaft 14 and each through hole of the support plate. The two Glyd rings 16 are arranged axially at intervals along the hollow shaft 14. The Glyd rings 16 are high-efficiency rotary seals 17 made of polytetrafluoroethylene and elastomer composite, which have both excellent wear resistance and sealing performance, and are suitable for the rotational operation of the hollow shaft 14. The two Glyd rings 16 are arranged axially at intervals along the hollow shaft 14, and the interval distance is adapted to the thickness of the support plate to ensure that the sealing range completely covers the mating area between the shaft and the support plate.

[0039] Meanwhile, there are two water inlet channels 7 and two water return channels 71. The two water inlet channels 7 are parallel and located on the outer side of the lamp holder 2, while the two water return channels 71 are parallel and located on the inner side of the lamp holder 2. The water inlet channels 7 and the water return channels 71 are not connected to each other. The two water return channels 71 are parallel and located on the inner side of the lamp holder 2 near the mercury lamp, which can more quickly remove the heat conducted from the mercury lamp to the lamp holder 2. Both the water inlet channels 7 and the water return channels 71 extend along the length of the lamp holder 2, and are parallel to each other and do not intersect. The inner walls of the channels are smooth to reduce water flow resistance.

[0040] Furthermore, a silicone sealing gasket is provided between the end of the connecting block assembly 10 and the reflector 3. The shape of the silicone sealing gasket is adapted to the end face shape of the connecting block assembly 10, and an avoidance hole corresponding to the water passage of the hollow rotating shaft 14 is provided on the silicone sealing gasket. The silicone sealing gasket is a flexible sealing element that is resistant to high temperature and water corrosion. Its shape is perfectly adapted to the end face of the connecting block assembly 10 and the end shape of the reflector 3, ensuring a tight fit without gaps. The avoidance hole on the silicone sealing gasket is coaxial with the water passage of the hollow rotating shaft 14, and the inner diameter of the avoidance hole is slightly larger than the outer diameter of the hollow rotating shaft 14, which does not affect the flow of cooling water and can form a seal around the passage.

[0041] like Figure 3-8 As shown, this utility model provides a technical solution: a compact mercury lamp cover for UV curing equipment, wherein the inner wall of the hollow rotating shaft 14 has a smooth surface. There are at least two water inlets 15, evenly distributed along the circumference of the hollow rotating shaft 14. The inner wall of the internal water passage of the hollow rotating shaft 14 is smooth to reduce frictional resistance during cooling water flow and lower energy consumption.

[0042] Furthermore, the water distribution block 8 is provided with a main water inlet 21 and a main water return outlet 22. The main water inlet 21 is connected to all the water inlet channels 7 of the lamp holder 2 through an internal flow channel, and the main water return outlet 22 is connected to all the water return channels 71 of the lamp holder 2 through an internal flow channel. A filter screen is provided in the internal flow channel of the water distribution block 8. The water distribution block 8 is fixed inside the outer shell 1, and its interior is provided with a distribution channel and a confluence channel corresponding to the water inlet channels 7 and the water return channels 71. The distribution channel can evenly distribute the cooling water from the main water inlet 21 to each water inlet channel 7, and the confluence channel can collect the cooling water from each water return channel 71 to the main water return outlet 22.

[0043] The reflector 3 contains at least two cooling water channels 9, all of which are arranged parallel to the length of the reflector 3, and their extension covers the entire heat-generating area of ​​the reflector 3. The cross-sectional shape of the cooling water channels 9 is semi-circular or rectangular. The channels are arranged parallel to the length of the reflector 3, ensuring cooling from one end to the other. The inner side of the reflector 3 experiences temperature rise due to the absorption of ultraviolet light and heat. The cooling water channels 9 allow the cooling water to indirectly contact the heat-generating parts of the reflector 3. At least two parallel cooling water channels 9 cover the entire heat-generating area of ​​the reflector 3.

[0044] The lamp holder 2 has several exhaust vents 5 evenly distributed along its length. When the mercury lamp is working, the hot air and ozone generated are drawn into the lamp holder 2 by an external exhaust fan, creating negative pressure and forming a downward airflow through the exhaust vents 5 at the bottom of the lamp holder 2. The evenly distributed exhaust vents 5 can comprehensively collect the hot air and ozone inside the lamp holder 2.

[0045] like Figure 5 and Figure 7 As shown, this utility model provides a technical solution: a compact mercury lamp cover for UV curing equipment, the drive mechanism 4 includes a cylinder 18, the cylinder 18 is a rotary cylinder, and the rotary cylinder is fixed to one end of the inner side of the outer shell 1.

[0046] The output shaft of the rotary cylinder is fixedly connected to the hollow rotating shaft 14 of the connecting block at the end of one side of the reflector 3. The rotary cylinder is fixed to one end inside the outer casing 1, and its output shaft is coaxially fixed to the hollow rotating shaft 14 of one side of the reflector 3. A drive gear 19 is also fixed on the rotating shaft. The drive gear 19 meshes with the driven gear 20 fixed at the end of the hollow rotating shaft 14 on the other side of the reflector 3, so that the reflector 3 can stay at any opening angle.

[0047] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0048] In use, when the reflector 3 needs to be opened, the output shaft of the rotary cylinder rotates forward, driving the hollow rotating shaft 14 and the drive gear 19 fixed thereto to rotate synchronously. The drive gear 19 drives the driven gear 20 to rotate in the opposite direction through meshing, thereby driving the hollow rotating shaft 14 of the other reflector 3 to rotate, causing both reflectors 3 to open outward synchronously around the support plate. When the reflector 3 needs to be closed, the output shaft of the rotary cylinder rotates in the opposite direction, driving both reflectors 3 to close inward synchronously through gear transmission.

[0049] In summary, the compact mercury lamp cover for UV curing equipment has external cooling water entering through the main inlet 21 of the water distribution block 8. After entering, the water is distributed by the internal flow channel to the two water inlet channels 7 on the outside of the lamp holder 2. The water flows into the water storage cavity 13 of the front support plate 11 and then enters the internal cooling water channel 9 of the reflector 3 through the water delivery holes 15 evenly distributed around the circumference of the hollow rotating shaft 14. This cools the heat generated by the mercury lamp inside the reflector 3. The cooled water after heat exchange flows into the two return water channels 71 inside the lamp holder 2 through the water storage cavity 13 of the rear support plate 12. Finally, it is discharged through the main return water outlet 22 of the water distribution block 8 to form a closed-loop water cooling circuit. The Glyd ring 16 between the hollow rotating shaft 14 and the support plate and the silicone sealing gasket between the connecting block assembly 10 and the reflector 3 form a double seal to ensure that there is no cooling water leakage when the reflector 3 rotates.

[0050] At the same time, the rotary cylinder drives the hollow rotating shaft 14 and the driving gear 19 of one side reflector 3 to rotate. By meshing with the driven gear 20 of the other side reflector 3, the reflectors on both sides open and close synchronously, and stabilize by means of the self-locking property of the gears, adapting to different curing requirements.

[0051] The hot air and ozone generated by the mercury lamp are promptly discharged under negative pressure through the evenly distributed exhaust holes 5 at the bottom of the lamp holder 2. The circulating water cooling and exhaust holes 5 dissipate heat simultaneously, ensuring the long-term stable operation of the mercury lamp and the curing effect.

[0052] It should be noted that all electrical components mentioned in this article are connected to an external main controller and 220V or 380V AC mains power. The main controller can be a conventional, known device such as a computer, and its control principles, internal structure, and control switching methods are all conventional methods of existing technology. These are directly cited here without further elaboration. In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0053] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A compact mercury lamp cover for a UV curing equipment, comprising a housing (1), a lamp holder (2) inside the housing (1), and a mercury lamp inside the lamp holder (2); reflectors (3) are respectively provided on both sides of the lamp holder (2); a driving mechanism (4) for driving the two reflectors (3) to open and close is provided inside the housing (1); and an exhaust vent (5) is provided inside the lamp holder (2); characterized in that: The outer casing (1) is also provided with a circulating water cooling device (6); the circulating water cooling device (6) includes: several water inlet channels (7) and several water return channels (71) opened inside the lamp holder (2), a water distribution block (8) provided inside the outer casing (1) for distributing and recovering cooling water, several cooling water channels (9) provided inside the reflector (3), and connecting block assemblies (10) provided at both ends of the reflector (3). The lamp holder (2) is provided with a front support plate (11) and a rear support plate (12). A water storage cavity (13) is opened in both the front and rear support plates (11, 12). Two hollow rotating shafts (14) are provided through each support plate. The two hollow rotating shafts (14) correspond one-to-one with the two reflectors (3) on both sides of the lamp holder (2). One end of the hollow rotating shaft (14) is sealed and the other end is fixedly connected to the connecting block assembly (10). The water inlet channel (7) is connected to the water storage cavity (13) of the front support plate (11). For water supply, the hollow rotating shaft (14) has a water supply hole (15) on its side wall that is connected to the water storage chamber (13) and the cooling water channel (9) of the reflector (3); the water storage chamber (13) of the rear support plate (12) is connected to the cooling water channel (9) of the reflector (3) and the return water channel (71) of the lamp holder (2) in sequence to drain the cooling water; a rotary seal (17) is provided between the hollow rotating shaft (14) and the through hole of each support plate to realize the sealed transmission of cooling water when the two reflectors (3) rotate.

2. A compact mercury lamp shade for UV curing equipment according to claim 1, characterized in that: The rotary seal (17) is a Gladius ring (16), and at least two Gladius rings (16) are provided between the hollow shaft (14) and each support plate through hole, with the two Gladius rings (16) arranged at an axial interval along the hollow shaft (14).

3. A compact mercury lamp shade for UV curing equipment according to claim 1, characterized in that: The number of water inlet channels (7) is two, and the number of water return channels (71) is two. The two water inlet channels (7) are opened in parallel on the outer side of the lamp holder (2), and the two water return channels (71) are opened in parallel on the inner side of the lamp holder (2). The water inlet channels (7) and the water return channels (71) are not connected to each other.

4. A compact mercury lamp shade for UV curing equipment according to claim 1 or 2, characterized in that: A silicone sealing gasket is provided between the end of the connecting block assembly (10) and the reflector (3). The shape of the silicone sealing gasket is adapted to the end face shape of the connecting block assembly (10), and an avoidance hole corresponding to the water passage of the hollow rotating shaft (14) is provided on the silicone sealing gasket.

5. A compact mercury lamp shade for UV curing equipment according to claim 1 or 3, characterized in that: The inner wall of the hollow rotating shaft (14) is a smooth surface; the number of water delivery holes (15) is at least 2, and they are evenly distributed along the circumference of the hollow rotating shaft (14).

6. A compact mercury lamp shade for UV curing equipment according to claim 1 or 3, characterized in that: The water distribution block (8) is provided with a main water inlet (21) and a main water return outlet (22). The main water inlet (21) is connected to all the water inlet channels (7) of the lamp holder (2) through the internal flow channel. The main water return outlet (22) is connected to all the water return channels (71) of the lamp holder (2) through the internal flow channel. A filter screen is provided in the internal flow channel of the water distribution block (8).

7. A compact mercury lamp shade for UV curing equipment according to claim 3, characterized in that: The number of cooling water channels (9) inside the reflector (3) is at least 2. All cooling water channels (9) are arranged parallel to the length of the reflector (3), and the extension range of the cooling water channels (9) covers the entire heat generation area of ​​the reflector (3). The cross-sectional shape of the cooling water channels (9) is semi-circular or rectangular.

8. A compact mercury lamp shade for UV curing equipment according to claim 1, characterized in that: The number of exhaust holes (5) is several, and they are evenly distributed along the length of the lamp holder (2).

9. A compact mercury lamp shade for UV curing equipment according to claim 1, characterized in that: The drive mechanism (4) includes a cylinder (18), which is a rotary cylinder and is fixed to one end of the inner side of the outer shell (1); The output shaft of the rotary cylinder is fixedly connected to the hollow rotating shaft (14) of the end connecting block of one side reflector (3), and a drive gear (19) is also fixed on the rotating shaft; the drive gear (19) meshes with the driven gear (20) fixed at the end of the hollow rotating shaft (14) on the other side reflector (3) so that the reflector (3) stays at any opening angle.

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