A purge device with low pressure protection

Abstract

The application relates to the technical field of discharge of blowing equipment, and discloses a low-pressure protection discharge device for blowing equipment, which comprises a mounting frame, pressure tanks are fixedly installed on the two sides in the mounting frame, a limiting frame is fixedly installed at the top of the mounting frame, a sealing plate is fixedly installed in the limiting frame, gas outlet pipes are fixedly installed on the two sides of the back of the limiting frame, an adjusting assembly is fixedly installed in the limiting frame, and the low-pressure protection discharge device utilizes the limiting frame, the sealing plate, the gas outlet pipes and the adjusting assembly. When discharging the gas, personnel adjusts the different inclination angles of the gas outlet and the size of the outlet through the adjusting assembly. After the adjustment is completed, the gas is blocked by the sealing plate, and then the gas is discharged outward through the gas outlet pipes on the two sides of the back of the limiting frame, so that the rate of the gas discharge is adjusted, manual operation is not needed, and the outlet through which the gas flows is increased when the sensor senses that the gas impact force is too large.

Description

Technical Field

[0001] This invention relates to the field of blister box forming technology, specifically to a low-pressure protection discharge device for purging equipment. Background Technology

[0002] The purging device utilizes dynamic pressure compensation based on fluid mechanics to accurately reflect the pressure values ​​at each measuring point online. The purging pressure is greater than the measured pressure, completely resolving the issues of blockage and burnout in pressure measurement pipelines under dusty and high-temperature conditions. Employing a pressure regulator, the device stabilizes the gas supply from the power plant, ensuring stable flow output from the flow controller and reliable long-term operation. In industrial cleaning processes, it removes residual impurities (such as welding slag, rust, and particulate matter) from pipelines or equipment through a fluid medium (air, nitrogen, steam, etc.). Its core purpose is to ensure safe equipment operation and environmental compliance. After purging, personnel need to discharge the purged gas.

[0003] Furthermore, the purging gas is usually discharged directly through pipelines during the purging process. However, the current purging equipment with low-pressure protection discharge devices still has the following shortcomings in use: Existing emission devices can damage pipelines if the force of the emitted gas is too great. Therefore, low-pressure emission is required. However, the angle and size of the emission port cannot be changed during low-pressure emission, which means that different emission devices need to be replaced for different gases, increasing the cost of gas emission. During the gas emission process, foreign objects remain in the gas after purging. These foreign objects are discharged with the gas flow, which will affect the environment around the emitted gas. Furthermore, the inability to effectively filter these foreign objects and thus fail to meet emission standards is an urgent problem that needs to be solved. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a low-pressure protection emission device for purging equipment. The main purpose is to solve the problem that excessive force during gas emission can damage pipelines, necessitating low-pressure emission. However, during low-pressure emission, the angle and size of the emission port cannot be changed, requiring different emission devices for different gases, increasing emission costs. Furthermore, the invention addresses the issue of residual foreign matter in the gas after purging, which is discharged with the gas flow, impacting the surrounding environment and failing to effectively filter the foreign matter, thus failing to meet emission standards.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A low-pressure protection discharge device for purging equipment includes a mounting frame, with pressure tanks fixedly mounted on both sides inside the mounting frame, a limit frame fixedly mounted on the top of the mounting frame, a sealing plate fixedly mounted inside the limit frame, air outlet pipes fixedly mounted on both sides of the back of the limit frame, an adjustment component fixedly mounted inside the limit frame, positioning plates fixedly mounted on both sides of the top of the mounting frame, sensors fixedly mounted on the surface of the positioning plates, a power line provided at the signal end of the sensors, a connecting pipe provided on the top of the pressure tanks, and a blocking component provided in the middle of the connecting pipe.

[0006] When venting gas, personnel adjust the tilt angle and size of the outlet using the adjustment component. After adjustment, the gas is blocked by the sealing plate and then discharged outward through the outlet pipes on both sides of the back of the limiting frame. This regulates the rate of gas discharge without manual operation. When the sensor detects excessive gas impact, it increases the size of the gas outlet. During use, personnel connect the blocking component via a connecting pipe. The blocking component at one end of the connecting pipe blocks and stores foreign objects in the gas, reducing the likelihood of foreign objects flowing out with the gas and improving the standard of gas discharge.

[0007] Furthermore, the adjustment assembly includes a servo motor fixedly installed on one side of the surface of the limiting frame. A threaded rod is fixedly installed at the output end of the servo motor. A positioning ring is threadedly connected to the surface of the threaded rod. A telescopic part is provided at the bottom of the positioning ring. A telescopic plate is fixedly installed at the bottom of the telescopic part. The telescopic plate is rotatably connected to one side inside the limiting frame.

[0008] Based on the aforementioned solution, the telescopic part includes a support rod fixedly installed on the surface of the telescopic plate, a rotating ring rotatably connected to the surface of the support rod, a connecting rod fixedly installed on the surface of the rotating ring, an electric push rod fixedly installed on the top of the connecting rod, and the top of the electric push rod fixedly installed on the bottom of the positioning ring.

[0009] As a further embodiment of the present invention, the size of the inside of the rotating ring is adapted to the size of the support rod, and the rotating ring drives the telescopic plate to extend and retract at different tilt angles and lengths through the support rod.

[0010] Furthermore, a guide rod is fixedly installed on one side of the surface of the positioning ring, and one end of the guide rod is slidably connected inside the limiting frame.

[0011] The output of the servo motor will drive the threaded rod to rotate. When the threaded rod rotates, it will drive the positioning ring threaded onto the surface of the threaded rod to move laterally. The laterally moving positioning ring will drive the electric push rod to move laterally. During the movement of the electric push rod, it will drive the rotating ring to move. When the rotating ring moves, the electric push rod will start and adjust its height through the connecting rod. When the connecting rod is adjusted to different heights, it will drive the support rod to adjust its height through the rotating ring. When the support rod is adjusted to different heights, it will drive the telescopic plate to adjust its length and angle.

[0012] Based on the aforementioned scheme, the blocking assembly includes a threaded cylinder fixedly installed at one end of the connecting pipe, a threaded tube being threadedly connected inside the threaded cylinder, a reinforcing ring being fixedly installed on the surface of the threaded cylinder, a threaded groove being formed on the surface of the reinforcing ring, a positioning bolt being threadedly connected inside the threaded groove, and a filter section being fixedly installed inside the threaded cylinder.

[0013] The filter unit is placed inside the threaded cylinder. Then, the threaded cylinder, which is fixedly installed at one end of the connecting pipe, is rotated. As the threaded cylinder rotates, it connects with the threaded pipe. After the threaded cylinder and the threaded pipe are connected, the positioning bolt is rotated through the reinforcing ring. When the positioning bolt rotates, it positions the filter unit inside the threaded cylinder. After the filter unit is positioned, it will block foreign objects in the gas, and the blocked foreign objects will be collected by the filter unit.

[0014] As a further embodiment of the present invention, the filter section includes a storage frame fixedly installed inside the threaded cylinder. Positioning grooves are provided on both sides of the surface of the storage frame. Positioning blocks are engaged inside the positioning grooves, and a filter plate is fixedly installed between the positioning blocks.

[0015] Furthermore, the size of the positioning block is adapted to the size of the positioning groove, the positioning block is made of magnetic material, and the storage frame is made of ferrous material.

[0016] After the gas is purged, the personnel rotate the threaded pipe and threaded cylinder to disassemble them. Then, they rotate the positioning bolt in the opposite direction to remove the filter section inside the threaded cylinder. After removing the filter section, the personnel pull out the filter plate through the positioning block. Then, they clean the filter plate and remove foreign objects from inside the storage box. After cleaning the collected foreign objects, the personnel install and position the filter plate using the magnetic positioning block. After the filter plate is installed and positioned, it can be used for subsequent use.

[0017] Based on the aforementioned scheme, a limiting groove is provided at each of the four corners of the front of the mounting frame. A sealing partition is threadedly connected inside the limiting groove through a limiting bolt. A sealing gasket is provided inside the sealing partition. The size of the sealing gasket is adapted to the size of the inside of the mounting frame. The sealing gasket is snapped into the inside of the mounting frame.

[0018] After the pressure is changed, the sealing plate is installed on the front of the installation using the limit bolt. The sealing gasket inside the sealing plate will then seal the installation. The support block on the back of the installation can support the installation, and the anti-slip rubber pad on the bottom improves the stability of the support block after contacting the ground, reducing the occurrence of positional displacement during installation.

[0019] As a further embodiment of the present invention, a support block is fixedly installed on the back of the mounting frame, the bottom of the support block and the bottom of the mounting frame are on the same horizontal plane, and a rubber pad to improve anti-slip properties is provided on the bottom of the support block.

[0020] Compared with the prior art, the present invention provides a low-pressure protection discharge device for purging equipment, which has the following beneficial effects: 1. This invention utilizes a limiting frame, a sealing plate, an exhaust pipe, and an adjustment component. When discharging gas, personnel can adjust the different tilt angles and outlet sizes of the exhaust port using the adjustment component. After adjustment, the gas will be blocked by the sealing plate, and then the gas will be discharged outward through the exhaust pipes on both sides of the back of the limiting frame. This effectively regulates the rate of gas discharge without requiring manual operation. When the sensor detects excessive gas impact force, it will increase the size of the gas outlet.

[0021] 2. In this invention, by using a pressure tank, connecting pipe and blocking component, during use, personnel will connect to the blocking component through the connecting pipe. Then, the blocking component at one end of the connecting pipe will block and store foreign objects in the gas, reducing the possibility of foreign objects flowing out with the gas and improving the standard of gas discharge. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a low-pressure protection emission device for a purging equipment proposed in this invention; Figure 2 This is a schematic diagram showing the disassembled structure of a low-pressure protection discharge device for a purging equipment according to the present invention; Figure 3 This is a schematic diagram of the blocking component structure of a low-pressure protection discharge device for a purging equipment according to the present invention; Figure 4 This is a schematic diagram of the regulating component structure of a low-pressure protection discharge device for a purging equipment according to the present invention; Figure 5 This is a schematic diagram of the mounting frame structure of a low-pressure protection discharge device for purging equipment proposed in this invention.

[0023] In the diagram: 1. Mounting frame; 2. Pressure tank; 3. Limiting frame; 4. Air outlet pipe; 5. Adjustment component; 51. Servo motor; 52. Threaded rod; 53. Positioning ring; 54. Telescopic part; 541. Support rod; 542. Rotating ring; 543. Connecting rod; 544. Electric push rod; 6. Positioning plate; 7. Sensor; 8. Connecting pipe; 9. Blocking component; 91. Threaded cylinder; 92. Threaded pipe; 93. Reinforcing ring; 94. Positioning bolt; 95. Filter part; 951. Storage frame; 952. Positioning block; 953. Filter plate; 10. Guide rod; 11. Sealing plate. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Reference Figures 1-5 A low-pressure protection discharge device for purging equipment includes a mounting frame 1. Each of the four corners of the front of the mounting frame 1 has a limiting groove. A sealing partition is threadedly connected to the inside of the limiting groove via a limit bolt. A sealing gasket is provided inside the sealing partition. The size of the sealing gasket is adapted to the size of the inside of the mounting frame 1. The sealing gasket is snapped into the inside of the mounting frame 1. A support block is fixedly installed on the back of the mounting frame 1. The bottom of the support block is at the same level as the bottom of the mounting frame 1. A rubber pad to improve anti-slip properties is provided on the bottom of the support block.

[0026] By using the sealing plate and limit bolt, after the pressure tank 2 is replaced, the sealing plate is installed on the front of the mounting frame 1 through the limit bolt. Then the sealing gasket inside the sealing plate will seal the mounting frame 1. The support block set on the back of the mounting frame 1 can support the mounting frame 1. The anti-slip rubber pad set at the bottom improves the stability after the support block contacts the ground and reduces the occurrence of positional displacement of the mounting frame 1.

[0027] Pressure tanks 2 are fixedly installed on both sides inside the mounting frame 1. A limit frame 3 is fixedly installed on the top of the mounting frame 1. A sealing plate 11 is fixedly installed inside the limit frame 3. An air outlet pipe 4 is fixedly installed on both sides of the back of the limit frame 3. An adjustment component 5 is fixedly installed inside the limit frame 3. A positioning plate 6 is fixedly installed on both sides of the top of the mounting frame 1. A sensor 7 is fixedly installed on the surface of the positioning plate 6. A power line is provided at the signal end of the sensor 7. A connecting pipe 8 is provided on the top of the pressure tank 2. A blocking component 9 is provided in the middle of the connecting pipe 8.

[0028] The limiting frame 3 facilitates the storage of gas by personnel, and the gas outlet pipe 4 facilitates the discharge of gas by personnel. The sensor 7 can detect the gas flow rate, and the connecting pipe 8 can transmit the gas.

[0029] The adjustment assembly 5 includes a servo motor 51 fixedly installed on one side of the surface of the limiting frame 3. A threaded rod 52 is fixedly installed at the output end of the servo motor 51. A positioning ring 53 is threadedly connected to the surface of the threaded rod 52. A telescopic part 54 is provided at the bottom of the positioning ring 53. A telescopic plate is fixedly installed at the bottom of the telescopic part 54. The telescopic plate is rotatably connected to one side inside the limiting frame 3. The telescopic part 54 includes a support rod 541 fixedly installed on the surface of the telescopic plate. A rotating ring 542 is rotatably connected to the surface of the support rod 541. A connecting rod 543 is fixedly installed on the surface of the rotating ring 542. An electric push rod 544 is fixedly installed at the top of the connecting rod 543. The top of the electric push rod 544 is fixedly installed at the bottom of the positioning ring 53. The size of the rotating ring 542 is adapted to the size of the support rod 541. The rotating ring 542 drives the telescopic plate to extend and retract at different tilt angles and lengths through the support rod 541. A guide rod 10 is fixedly installed on one side of the surface of the positioning ring 53. One end of the guide rod 10 is slidably connected to the inside of the limiting frame 3.

[0030] When sensor 7 detects that the gas flow rate is too fast, sensor 7 will control servo motor 51 to start. The output end of servo motor 51 will drive threaded rod 52 to rotate. When threaded rod 52 rotates, it will drive positioning ring 53 threaded to the surface of threaded rod 52 to move laterally. The laterally moving positioning ring 53 will drive electric push rod 544 to move laterally. During the movement of electric push rod 544, it will drive rotating ring 542 to move. When rotating ring 542 moves, electric push rod 544 will start to adjust to different heights through connecting rod 543. When connecting rod 543 adjusts to different heights, it will drive support rod 541 to adjust to different heights through rotating ring 542. When support rod 541 adjusts to different heights, it will drive telescopic plate to adjust to different lengths and angles. Telescopic plate controls the flow rate of discharged gas, which plays a role in regulating the rate of gas discharge without manual operation. When the sensor senses that the gas impact force is too large, it will increase the gas outlet.

[0031] The blocking assembly 9 includes a threaded cylinder 91 fixedly installed at one end of the connecting pipe 8. A threaded pipe 92 is threadedly connected inside the threaded cylinder 91. A reinforcing ring 93 is fixedly installed on the surface of the threaded cylinder 91. A threaded groove is formed on the surface of the reinforcing ring 93. A positioning bolt 94 is threadedly connected inside the threaded groove. A filter part 95 is fixedly installed inside the threaded cylinder 91. The filter part 95 includes a storage frame 951 fixedly installed inside the threaded cylinder 91. Positioning grooves are formed on both sides of the surface of the storage frame 951. Positioning blocks 952 are engaged inside the positioning grooves. A filter plate 953 is fixedly installed between the positioning blocks 952. The size of the positioning blocks 952 is adapted to the size of the positioning grooves. The positioning blocks 952 are made of magnetic material, and the storage frame 951 is made of ferrous material.

[0032] Personnel place the filter unit 95 inside the threaded cylinder 91, and then rotate the threaded cylinder 91, which is fixedly installed at one end of the connecting pipe 8. As the threaded cylinder 91 rotates, it connects with the threaded pipe 92. After the threaded cylinder 91 and threaded pipe 92 are connected, personnel rotate the positioning bolt 94 using the reinforcing ring 93. When the positioning bolt 94 rotates, it positions the filter unit 95 inside the threaded cylinder 91. After positioning, the filter unit 95 will block foreign objects in the gas, and the blocked foreign objects will be collected by the filter unit 95. After the gas is purged, personnel connect the threaded pipe 92 and the threaded cylinder 91... The components are rotated to disassemble them. Then, the positioning bolt 94 is rotated in the opposite direction to remove the filter part 95 inside the threaded cylinder 91. After removing the filter part 95, the filter plate 953 is pulled out through the positioning block 952. Then, the filter plate 953 and foreign objects inside the storage frame 951 are cleaned. After cleaning the collected foreign objects, the filter plate 953 is installed and positioned using the magnetic positioning block 952. After the filter plate 953 is installed and positioned, it is convenient for subsequent continued use, reducing the situation where foreign objects in the gas flow out with the gas, and improving the standard of gas discharge.

[0033] Working principle: First, the pressure tank 2 is opened. Then, when the sensor 7 detects that the gas flow rate is too fast, the sensor 7 will control the servo motor 51 to start. The output end of the servo motor 51 will drive the threaded rod 52 to rotate. When the threaded rod 52 rotates, it will drive the positioning ring 53 threaded to the surface of the threaded rod 52 to move laterally. The laterally moving positioning ring 53 drives the electric push rod 544 to move laterally. During the movement of the electric push rod 544, it drives the rotating ring 542 to move. When the rotating ring 542 moves, the electric push rod 544 is activated via the connecting rod 54. 3. Adjusting the height of the connecting rod 543 at different heights will drive the support rod 541 to adjust at different heights via the rotating ring 542. When the support rod 541 is adjusted at different heights, it will drive the telescopic plate to adjust at different lengths and angles. The telescopic plate controls the flow rate of the discharged gas. While controlling the gas flow rate, the filter section 95 is placed inside the threaded cylinder 91. Then, the threaded cylinder 91, fixedly installed at one end of the connecting pipe 8, is rotated. When the threaded cylinder 91 rotates, it connects with the threaded pipe 92. The threaded cylinder 91 and the threaded pipe 92... After connection, personnel rotate the positioning bolt 94 using the reinforcing ring 93. Rotation of the positioning bolt 94 positions the filter section 95 inside the threaded cylinder 91. Once positioned, the filter section 95 blocks foreign objects in the gas, collecting them. After the gas is purged, personnel rotate the threaded pipe 92 and the threaded cylinder 91 to disassemble them. Then, the positioning bolt 94 is rotated in the opposite direction to remove the filter section 95 inside the threaded cylinder 91. After removing the filter section 95, personnel remove the filter plate 9... 53 is pulled out by positioning block 952, then the filter plate 953 is cleaned and the foreign objects inside the storage frame 951 are cleaned. After cleaning the collected foreign objects, the personnel will install and position the filter plate 953 by using the magnetic positioning block 952. After the filter plate 953 is installed and positioned, it can be used for subsequent use. After the pressure tank 2 is replaced, the sealing plate is installed on the front of the mounting frame 1 by the limit bolt. Then the sealing gasket inside the sealing plate will seal the mounting frame 1. The support block set on the back of the mounting frame 1 can support the mounting frame 1, and the bottom is equipped with an anti-slip rubber pad.

[0034] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.

[0035] In the description herein, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] In the description herein, it should be noted that 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 process, method, article, or apparatus.

[0037] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A discharge device for low-pressure protection of purging equipment, comprising a mounting frame (1), characterized in that, Pressure tanks (2) are fixedly installed on both sides inside the mounting frame (1). A limit frame (3) is fixedly installed on the top of the mounting frame (1). A sealing plate (11) is fixedly installed inside the limit frame (3). An air outlet pipe (4) is fixedly installed on both sides of the back of the limit frame (3). An adjustment component (5) is fixedly installed inside the limit frame (3). A positioning plate (6) is fixedly installed on both sides of the top of the mounting frame (1). A sensor (7) is fixedly installed on the surface of the positioning plate (6). A power line is provided at the signal end of the sensor (7). A connecting pipe (8) is provided on the top of the pressure tank (2). A blocking component (9) is provided in the middle of the connecting pipe (8). The adjustment component (5) includes a servo motor fixedly installed on one side of the surface of the limit frame (3). 51), the output end of the servo motor (51) is fixedly installed with a threaded rod (52), the surface of the threaded rod (52) is threadedly connected with a positioning ring (53), the bottom of the positioning ring (53) is provided with a telescopic part (54), the bottom of the telescopic part (54) is fixedly installed with a telescopic plate, the telescopic plate is rotatably connected to one side inside the limit frame (3), the telescopic part (54) includes a support rod (541) fixedly installed on the surface of the telescopic plate, the surface of the support rod (541) is rotatably connected with a rotating ring (542), the surface of the rotating ring (542) is fixedly installed with a connecting rod (543), the top of the connecting rod (543) is fixedly installed with an electric push rod (544), the top of the electric push rod (544) is fixedly installed at the bottom of the positioning ring (53).

2. The discharge device for low-pressure protection of a purging equipment according to claim 1, characterized in that, The size of the rotating ring (542) is adapted to the size of the support rod (541). The rotating ring (542) drives the telescopic plate to extend and retract at different tilt angles and lengths through the support rod (541).

3. The discharge device for low-pressure protection of a purging equipment according to claim 1, characterized in that, A guide rod (10) is fixedly installed on one side of the surface of the positioning ring (53), and one end of the guide rod (10) is slidably connected inside the limiting frame (3).

4. The discharge device for low-pressure protection of a purging equipment according to claim 1, characterized in that, The blocking assembly (9) includes a threaded cylinder (91) fixedly installed at one end of the connecting pipe (8). The threaded cylinder (91) is internally threaded with a threaded pipe (92). A reinforcing ring (93) is fixedly installed on the surface of the threaded cylinder (91). A threaded groove is opened on the surface of the reinforcing ring (93). A positioning bolt (94) is internally threaded with the threaded groove. A filter part (95) is fixedly installed inside the threaded cylinder (91).

5. A discharge device for low-pressure protection of a purging equipment according to claim 4, characterized in that, The filter section (95) includes a storage frame (951) fixedly installed inside the threaded cylinder (91). Positioning grooves are provided on both sides of the surface of the storage frame (951). Positioning blocks (952) are engaged inside the positioning grooves. Filter plates (953) are fixedly installed between the positioning blocks (952).

6. A discharge device for low-pressure protection of a purging equipment according to claim 5, characterized in that, The size of the positioning block (952) is adapted to the size of the positioning groove. The positioning block (952) is made of magnetic material, and the storage frame (951) is made of ferrous material.

7. A discharge device for low-pressure protection of a purging equipment according to claim 1, characterized in that, The mounting frame (1) has a limiting groove at each of the four corners on the front. The limiting groove is connected to a sealing partition by a limit bolt. The sealing partition is provided with a sealing gasket. The size of the sealing gasket is adapted to the size of the mounting frame (1). The sealing gasket is snapped into the inside of the mounting frame (1).

8. A discharge device for low-pressure protection of a purging equipment according to claim 1, characterized in that, A support block is fixedly installed on the back of the mounting frame (1). The bottom of the support block and the bottom of the mounting frame (1) are on the same horizontal plane. A rubber pad to improve anti-slip properties is provided on the bottom of the support block.

Images