A porosity testing device for ceramic core detection

Abstract

The present invention relates to the technical field of ceramic core detection, and in particular to a porosity testing device for ceramic core detection, comprising a box body and a box door rotatably connected to the box body, a human-machine interactive display screen installed on the box door, a vacuum pump installed on the box body, an electric frame installed on the rear side of the box body, and a weighing device fixedly connected to the electric frame. The present invention first weighs the ceramic core for the first time through the weighing device, and then drives the ceramic core to move into a vacuum defoaming box through a clamping plate, so that the pores of the ceramic core are filled with distilled water to complete the weighing, and then drives the ceramic core upward through the clamping plate to perform the third weighing. Since the box body is evacuated by the vacuum pump, the ceramic core is always in a vacuum state to reset, so as to prevent the evaporation of part of the water due to environmental factors such as air pressure and temperature from affecting the third weighing, thereby improving the accuracy of the porosity test.

Description

Technical Field

[0001] The invention relates to the technical field of ceramic core detection, and in particular to a porosity testing device for ceramic core detection. Background Art

[0002] Ceramic core is a key intermediate component for preparing hollow inner cavity structure and has received extensive attention in the field of precision casting. In order to ensure the quality of ceramic core, the porosity of the ceramic core needs to be tested.

[0003] A Chinese patent with publication number CN115791567A discloses a ceramic core open porosity test device and a test method thereof. The ceramic core open porosity test device includes: a first weighing structure, a second weighing structure and a data processing-display module. The first weighing structure is arranged in the air, and the second weighing structure is arranged in the solution. The ceramic core sample can be weighed by the first weighing structure, the second weighing structure and the first weighing structure in sequence. The data processing-display module can calculate according to the detected multiple weights to obtain the open porosity W of the ceramic core sample. Although the above patent can perform porosity test on the ceramic core, when the ceramic core is weighed in water, it is necessary to take out the water stains on the surface of the ceramic core and wipe off the water stains before weighing it for the third time. During the taking-out process, due to the change from a vacuum environment to a normal environment, the water inside the ceramic core is easily evaporated due to environmental factors such as air pressure and temperature, so that the weighing value under the water storage state will be slightly smaller than the weight value under the actual water storage state, thereby causing a deviation in the test porosity and affecting the accuracy.

[0004] The present invention aims to solve the problems existing in the above-mentioned patents. To this end, a porosity testing device for ceramic core detection is proposed, which can directly weigh the immersed water in a vacuum environment without taking it out, thereby improving the accuracy of the porosity test. Summary of the invention

[0005] In order to overcome the disadvantage that during the removal process, the water inside the ceramic core may evaporate to a certain extent due to environmental factors such as air pressure and temperature, resulting in the weighing value under the water storage state being slightly smaller than the weight value under the actual water storage state, thereby causing the porosity test to deviate and affecting the accuracy, the present invention provides a porosity testing device for ceramic core detection, which can directly weigh the ceramic core after immersion in water under a vacuum environment without taking it out, thereby improving the accuracy of the porosity test.

[0006] The present invention is achieved through the following technical solutions:

[0007] A porosity testing device for ceramic core detection, comprising a box body and a box door rotatably connected to the box body, a human-machine interactive display screen installed on the box door, a vacuum pump installed on the box body, an electric frame installed on the rear side of the box body, a weighing device fixedly connected to the electric frame, and also comprising a mounting plate, a movable frame, a winch, a movable plate, an elastic telescopic rod, a clamping plate, a rodless cylinder, an immersion component and a scraping component, the immersion component is installed inside the box body for immersing the ceramic core, a mounting plate is installed inside the box body, a winch is symmetrically installed on the mounting plate, a movable frame is fixedly connected between the tail ends of the wire ropes on the winch, and a A rodless cylinder, a movable plate is fixedly connected to the moving part of the rodless cylinder, an elastic telescopic rod is fixedly connected to the movable plate, a splint is fixedly connected to the end of the elastic telescopic rod, the splint is used to clamp the ceramic core, and then the winch drives the movable frame to move downward, the movable frame drives the movable plate to move downward through the rodless cylinder, the movable plate drives the ceramic core to move into distilled water through the elastic telescopic rod and the splint to be soaked and weighed, the winch then drives the movable frame to move upward and reset, so that the ceramic core after soaking and weighing can directly move upward to complete the third weighing, the scraping assembly is installed between the movable frame and the movable plate, and is used to scrape off water stains on the surface of the ceramic core.

[0008] Further explanation, the immersion component includes a vacuum debubble box fixedly connected to the bottom of the box body, which is used to place distilled water. A drain outlet is provided at the bottom of the vacuum debubble box. The vacuum debubble box is located under the plywood. The vacuum debubble box is made of transparent material. A liquid level sensor is installed on the inside of the vacuum debubble box. A scale is fixedly connected to the vacuum debubble box.

[0009] Further explanation, the scraping assembly includes a slide plate slidably connected to the inner side of the movable frame, a return plate is fixedly connected to the bottom of the slide plate, and scrapers are rotatably connected to the four sides of the return plate to scrape water stains on the surface of the ceramic core. A spring is connected between the scraper and the return plate, and an electric screw threadedly connected to the slide plate is horizontally installed on the movable frame.

[0010] As a further explanation, the scraping assembly also includes a return frame fixedly connected to the right movable plate, and the return frame contacts the inner side surface of the scraper to support and limit the scraper.

[0011] Further explanation, the porosity testing device for ceramic core detection also includes a drying component, which includes a frame slidably connected to the inner side of the box body, the frame is located on the rear side of the splint, and the frame is evenly spaced with straight holes for hot air to pass through. A dryer is installed on the frame, and the dryer corresponds to the straight holes of the frame. Electric push rods are symmetrically installed on the upper rear side of the box body, and the telescopic rod ends of the electric push rods on the left and right sides are respectively fixedly connected to the rear sides of the left and right frames. Cover plates are slidably connected to the upper front sides of the left and right sides of the box body, and the cover plates are located on the front side of the frame. When the cover plate contacts the frame, the cover plate can close the frame. A trigger assembly is arranged between the cover plate and the frame. When the trigger assembly is operated, the trigger assembly can drive the cover plate to move.

[0012] As a further explanation, the drying assembly also includes a drain pipe connected to the bottom of the frame body, which is used to drain the distilled water in the frame body.

[0013] To further illustrate, the trigger assembly includes a gear rotatably connected to the box body, a rack I is fixed to the frame body, the rack I moves and meshes with the gear, and a rack II meshing with the gear is fixed to the cover plate.

[0014] As a further explanation, the porosity testing device for ceramic core detection also includes a transparent window fixedly connected to the front side of the box body, and the transparent window is located on the front side of the vacuum defoaming box.

[0015] The beneficial effects of the present invention are:

[0016] 1. First, weigh the ceramic core with a weighing device, then move the ceramic core into the vacuum defoaming box through the clamping plate, so that the pores of the ceramic core are filled with distilled water to complete the weighing, and then move the ceramic core upward through the clamping plate for the third weighing. Since the box is evacuated by the vacuum pump, the ceramic core is always in a vacuum state to reset, so as to prevent the evaporation of part of the water due to environmental factors such as air pressure and temperature from affecting the third weighing, thereby improving the accuracy of the porosity test.

[0017] 2. Under the action of the scraper, whenever the ceramic core moves upward to reset, the scraper can move to scrape off the water stains on the surface of the ceramic core, so that there is no need for manual scraping of the surface water stains, which is more convenient.

[0018] 3. Under the action of the dryer, whenever the frame and the cover cover the parts on the movable plate and the skateboard, the dryer is started, and the dryer can dry the parts on the movable plate and the skateboard, which can prevent the parts on the movable plate and the skateboard from being corroded and damaged by distilled water and affecting their use, thereby ensuring the service life of the parts on the movable plate and the skateboard. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0020] Figure 2 It is a three-dimensional structural schematic diagram of the vacuum pump, electric frame and weighing device of the present invention.

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the elastic telescopic rod and the clamping plate of the present invention.

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the movable plate and the rodless cylinder of the present invention.

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the wiper assembly of the present invention.

[0024] Figure 6 It is a three-dimensional structural schematic diagram of the scraper and the return frame of the present invention.

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the drying component of the present invention.

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of the frame and the dryer of the present invention.

[0027] Fig. 9 It is a schematic diagram of the three-dimensional structure of the transparent window of the present invention.

[0028] The meanings of the reference numerals in the figure are as follows: 1: box body, 2: box door, 3: human-computer interaction display screen, 4: vacuum pump, 5: electric frame, 6: weighing device, 7: mounting plate, 8: movable frame, 9: winch, 10: movable plate, 11: elastic telescopic rod, 12: splint, 121: rodless cylinder, 13: vacuum defoaming box, 131: liquid level sensor, 132: scale, 14: slide plate, 141: return plate, 142: scraper, 143: reed, 144: return frame, 145: electric screw, 15: electric push rod, 151: frame body, 152: dryer, 153: cover plate, 154: rack I, 155: gear, 156: rack II, 157: drain pipe, 16: transparent window. DETAILED DESCRIPTION

[0029] First of all, it should be pointed out that in the different described embodiments, the same parts are provided with the same reference numerals or the same component names, wherein the disclosure contained in the entire description can be transferred to the same parts with the same reference numerals or the same component names. Selected positional descriptions in the description, such as top, bottom, lateral, etc., also refer to the directly described and shown figures and are transferred to the new positions in the case of a change in position.

[0030] Example: A porosity testing device for ceramic core testing, see Figure 1-Figure 6As shown, it includes a box body 1 and a box door 2 rotatably connected to the upper front side of the box body 1, a human-machine interactive display screen 3 is installed on the upper right side of the box door 2, a vacuum pump 4 is installed on the upper rear side of the box body 1, an electric frame 5 is installed in the middle of the rear side of the box body 1, and a weighing device 6 is fixedly connected to the front side of the electric frame 5, and also includes a mounting plate 7, a movable frame 8, a winch 9, a movable plate 10, an elastic telescopic rod 11, a splint 12, a rodless cylinder 121, an immersion component and a scraping component. The immersion component is installed on the inner side of the box body 1, and the immersion component can realize liquid immersion treatment of the ceramic core, a mounting plate 7 is installed on the upper rear side of the box body 1, and a winch 9 is symmetrically installed on the mounting plate 7, a movable frame 8 is fixedly connected between the tail ends of the steel wire ropes on the winches 9 on the left and right sides, and a rodless cylinder 121 is symmetrically installed on the movable frame 8. A movable plate 10 is fixedly connected to the moving part of the rod cylinder 121, and elastic telescopic rods 11 are fixedly connected to the lower parts of the movable plates 10 on both sides. The ends of the elastic telescopic rods 11 on both sides that are close to each other are fixedly connected with splints 12, and the splints 12 are used to clamp the ceramic core. Then the winch 9 drives the movable frame 8 to move downward, and the movable frame 8 drives the movable plate 10 to move downward through the rodless cylinder 121. The movable plate 10 drives the ceramic core to move into distilled water through the elastic telescopic rod 11 and the splint 12 to be soaked and weighed, and the winch 9 then drives the movable frame 8 to move upward and reset, so that the ceramic core after soaking and weighing can move directly upward to complete the third weighing. The scraping assembly is installed between the movable frame 8 and the movable plate 10. When the scraping assembly is in operation, the scraping assembly can scrape off water stains on the surface of the ceramic core.

[0031] See also Figure 3 As shown, the immersion component includes a vacuum debubble box 13, a liquid level sensor 131 and a scale 132. The vacuum debubble box 13 is fixedly connected to the bottom of the box body 1, and the vacuum debubble box 13 can be used to place distilled water. A drain port is provided on the left side of the bottom of the vacuum debubble box 13. The vacuum debubble box 13 is located below the splint 12. The vacuum debubble box 13 is made of transparent material. The liquid level sensor 131 is installed on the left side of the inside of the vacuum debubble box 13, and a scale 132 is fixedly connected to the left front side of the vacuum debubble box 13.

[0032] See also Figure 5 and Figure 6 As shown, the scraping assembly includes a slide plate 14, a return plate 141, a scraper 142, a spring 143 and an electric screw 145. The slide plate 14 is horizontally slidably connected to the inner side of the movable frame 8, and the return plate 141 is fixedly connected to the bottom of the slide plate 14. The scrapers 142 are rotatably connected to the middle of the four sides of the return plate 141. When the scraper 142 moves and contacts the surface of the ceramic core, the scraper 142 can scrape off the water stains on the surface of the ceramic core. The sides of the four scrapers 142 away from each other are connected to the outer side of the return plate 141 with a spring 143. An electric screw 145 is horizontally installed in the middle of the movable frame 8, and the electric screw 145 is threadedly connected to the upper part of the slide plate 14.

[0033] See also Figure 5 and Figure 6 As shown, the scraping assembly also includes a return frame 144 , and the return frame 144 is fixedly connected to the lower part of the right movable plate 10 . The return frame 144 contacts the inner side surfaces of the four scrapers 142 , and the return frame 144 can support and limit the scrapers 142 .

[0034] Initially, the reed 143 is in a compressed state. First, pull the box door 2 upward to swing open, pour a proper amount of distilled water into the vacuum defoaming box 13, and the distilled water contacts the liquid level sensor 131. The liquid level sensor 131 detects the liquid level of the distilled water, and the liquid level of the distilled water is known through the scale 132. Then, the ceramic core is placed on the weighing device 6. The weighing device 6 weighs the ceramic core in the air, thereby obtaining the weight m1 of the ceramic core in the air. Pull the box door 2 downward to swing closed, start the vacuum pump 4 to evacuate the box body 1, and then start the rodless cylinder 121 to drive the left and right side movable plates 10 to move towards each other. The movable plates 10 drive the left and right side clamping plates 12 to move towards each other through the elastic telescopic rod 11. The clamping plates 12 on both sides clamp the ceramic core, close the rodless cylinder 121, and then start the electric frame 5 to drive the weighing device 6 to move backward and retract, and the weighing device 6 is out of contact with the ceramic core, and then start the winch 9 to release the wire. The wire rope of the winch 9 drives the movable frame 8 to move downward, and the movable frame 8 drives the movable plate 10 to move downward through the rodless cylinder 121. The movable plate 10 drives the clamping plate 12 to move downward through the elastic telescopic rod 11, and the clamping plate 12 drives the ceramic core to move downward into the vacuum degassing box 13 to contact with the distilled water, so that the ceramic core is completely submerged, and the vacuum degassing box 13 is started to evacuate the ceramic core to remove bubbles, so that the distilled water can fill the pores of the ceramic core as completely as possible, so that the detected porosity structure is more accurate. At the same time, The ceramic core moves into the vacuum defoaming box 13, and the distilled water in the vacuum defoaming box 13 keeps rising. The liquid level sensor 131 detects the liquid level of the distilled water. When the ceramic core moves to the specified position, the winch 9 is turned off. At this time, the rising height data detected by the liquid level sensor 131 is displayed on the human-computer interaction display screen 3. The rising height data is the height of the rise excluding the movable frame 8 and the parts connected to the movable frame 8 immersed in distilled water. The human-computer interaction display screen 3 calculates the weight m2 of the ceramic core in water through the rising height data of the liquid level, and the weight is actually the supporting force N of the ceramic core structure. The supporting force should be the difference between the weight of the ceramic core sample + the water in the pores and the buoyancy in the solution, that is, N = sample + pore water gravity and - sample The buoyancy of the product is eliminated, and the winch 9 is started again to drive the movable frame 8 to move upward and reset. The movable frame 8 drives the movable plate 10 to move upward and reset through the rodless cylinder 121, so that the clamping plate 12 drives the ceramic core to move upward to the vacuum bubble removal box 13. Since the box body 1 is in a vacuum state, the ceramic core is always in a vacuum state and reset to prevent the evaporation of part of the water due to environmental factors such as air pressure and temperature from affecting the third weighing, thereby improving the accuracy of the porosity test, and then the electric screw 145 is started to rotate forward to drive the slide plate 14 to move left. The slide plate 14 drives the scraper 142 to move left through the return plate 141. The scraper 142 moves left and is out of contact with the return frame 144. Due to the action of the reed 143, the scraper 142 swings inward and contacts with the surface of the ceramic core.Then the scraper 142 continues to move to the left to scrape off the water stains on the surface of the ceramic core, so that the surface water stains do not need to be scraped off manually, which is more convenient. After the water stains on the surface of the ceramic core are scraped off, the electric screw 145 is started to reverse and drive the slide plate 14 to move right and reset, which makes the return plate 141 drive the scraper 142 to move right and reset and contact the return frame 144. The return frame 144 drives the scraper 142 to swing outward and reset, the reed 143 is compressed, and the scraper 142 is out of contact with the ceramic core. The electric frame 5 is started again to drive the weighing device 6 to move forward and reset, and the rodless cylinder 121 is started to drive the left and right side movable plates 10 to move away from each other and reset, which makes the clamping plate 12 reset to loosen the ceramic core, and the ceramic core falls on the weighing device 6 and is weighed. , Since the pores of the ceramic core are filled with distilled water, the ceramic core is weighed by the weighing device 6 to obtain a weight of m3. Therefore, the human-computer interactive display screen 3 calculates all the obtained data, and the volume Vv of the open pores can be obtained through (m3-m1) / ρ liquid. According to the calculation formula of N=sample+pore water gravity and-sample buoyancy, the buoyancy can be obtained=m3-m2, and the volume Vs=(m3-m2) / ρ liquid can be obtained according to the calculation formula of buoyancy, so as to finally obtain the porosity W=Vv / Vs=(m3-m1) / (m3-m2)*100% of the ceramic core. The operator can record the porosity, then pull the box door 2 upward to swing open, and remove the ceramic core after the porosity test from the weighing device 6. ,

[0035] See also Figure 7 and Figure 8As shown, the porosity testing device for ceramic core detection also includes a drying component installed on the box body 1, and the drying component includes an electric push rod 15, a frame 151, a dryer 152, a cover plate 153 and a trigger component. The upper and rear sides of the left and right sides of the box body 1 are slidably connected with the frame 151, and the frame 151 is located on the rear side of the clamping plate 12. The left and right sides of the frame 151 are separated from each other and have straight holes for hot air to pass through at even intervals. The left and right sides of the frame 151 are separated from each other and are equipped with dryers 152. The dryers 152 correspond to the straight holes of the frame 151. The bottom of the frame 151 is connected to a drain pipe 157, and the drain pipe 157 can realize the discharge of distilled water in the frame 151. The electric push rods 15 are symmetrically installed on the upper and rear sides of the box body 1, and the ends of the telescopic rods of the electric push rods 15 on the left and right sides are respectively connected to the The rear sides of the left and right side frames 151 are fixedly connected, and the upper sides of the front and left sides of the box body 1 are slidably connected with cover plates 153, which are located at the front side of the frame body 151. When the cover plate 153 contacts the frame body 151, the cover plate 153 can close the frame body 151. A trigger component is arranged between the cover plate 153 and the frame body 151. When the trigger component is operated, the trigger component can drive the cover plate 153 to move; the trigger component includes a rack I 154, a gear 155 and a rack II 156. The upper parts of the left and right sides of the box body 1 are rotatably connected with the gear 155, and the outer sides of the left and right side frames 151 away from each other are fixedly connected with the rack I 154, and the rack I 154 moves to mesh with the gear 155, and the sides of the left and right side covers 153 away from each other are fixedly connected with the rack II 156, and the rack II 156 meshes with the gear 155.

[0036] When the movable frame 8 drives the ceramic core to move upward and reset through the clamping plate 12, and the clamping plate 12 releases the ceramic core, the electric push rod 15 is started, and the telescopic rod of the electric push rod 15 is extended to drive the frame 151 to move forward, and the frame 151 drives the dryer 152 and the rack I154 to move forward, and the rack I154 is engaged with the gear 155, and the rack I154 drives the gear 155 to rotate forward, and the gear 155 rotates forward to drive the rack II156 to move backward, and the rack II156 drives the cover plate 153 to move backward, and the cover plate 153 moves backward and contacts the front side of the frame 151, and the electric push rod 15 is closed. At this time, the frame 151 and the cover plate 153 cover the components on the movable plate 10 and the slide plate 14, and the dryer 152 can be started, and the dryer 152 passes The hot air is discharged into the frame 151 through the slotted hole of the frame 151, and the components on the movable plate 10 and the slide plate 14 are dried to remove the attached distilled water. Part of the distilled water will fall into the frame 151, and the distilled water in the frame 151 is discharged through the drain pipe 157. When the components on the movable plate 10 and the slide plate 14 are dried, the dryer 152 is closed, the electric push rod 15 is started to drive the frame 151 to move backward and reset, the frame 151 drives the dryer 152 and the rack I 154 to move backward and reset, the rack I 154 drives the rack II 156 to move forward and reset through the gear 155, the rack II 156 drives the cover plate 153 to move forward and reset, the cover plate 153 is separated from the frame 151, and the electric push rod 15 is closed. In this way, the distilled water attached to the parts of the movable plate 10 and the slide plate 14 can be prevented from being corroded and damaged to affect the use, thereby ensuring the service life of the parts on the movable plate 10 and the slide plate 14.

[0037] See also Fig. 9 As shown, the porosity testing device for ceramic core detection also includes a transparent window 16 . The transparent window 16 is fixedly connected to the lower front side of the box body 1 , and the transparent window 16 is located at the front side of the vacuum defoaming box 13 .

[0038] When the ceramic core is weighed in the vacuum defoaming box 13, the operator can check the weighing of the ceramic core in distilled water through the transparent window 16. In this way, the operator can make a corresponding response in time according to the weighing situation, thereby ensuring the smooth weighing of the ceramic core.

[0039] Finally, it is necessary to point out that the above content is only used to help understand the technical solution of the present invention and cannot be understood as limiting the scope of protection of the present invention; non-essential improvements and adjustments made by technical personnel in the field of technology based on the above content of the present invention are all within the scope of protection required by the present invention.

Claims

1. A porosity testing device for ceramic core testing, comprising a box body (1) and a box door (2) rotatably connected to the box body (1), a human-machine interactive display screen (3) being installed on the box door (2), a vacuum pump (4) being installed on the box body (1), an electric frame (5) being installed on the rear side of the box body (1), a weighing device (6) being fixedly connected to the electric frame (5), wherein: The invention also comprises a mounting plate (7), a movable frame (8), a winch (9), a movable plate (10), an elastic telescopic rod (11), a clamp (12), a rodless cylinder (121), an immersion component and a scraping component. The immersion component is mounted on the inner side of the box body (1) and is used for immersing the ceramic core in liquid. The mounting plate (7) is mounted on the inner side of the box body (1). The winch (9) is symmetrically mounted on the mounting plate (7). The movable frame (8) is fixedly connected between the tail ends of the steel wire ropes on the winch (9). The rodless cylinder (121) is symmetrically mounted on the movable frame (8). The movable plate (10) is fixedly connected to the moving part of the rodless cylinder (121). The elastic telescopic rod (11) is fixedly connected to the movable plate (10). ), a clamping plate (12) is fixedly connected to the end of the elastic telescopic rod (11), and the clamping plate (12) is used to clamp the ceramic core, and then the winch (9) drives the movable frame (8) to move downward, and the movable frame (8) drives the movable plate (10) to move downward through the rodless cylinder (121), and the movable plate (10) drives the ceramic core to move to distilled water to be soaked and weighed through the elastic telescopic rod (11) and the clamping plate (12), and the winch (9) then drives the movable frame (8) to move upward and reset, so that the ceramic core after being soaked and weighed directly moves upward to complete the third weighing, and the scraping component is installed between the movable frame (8) and the movable plate (10) and is used to scrape water stains on the surface of the ceramic core; The scraping assembly comprises a slide plate (14) slidably connected to the inner side of the movable frame (8), a return plate (141) is fixedly connected to the bottom of the slide plate (14), and scrapers (142) are rotatably connected to the four sides of the return plate (141) to scrape water stains on the surface of the ceramic core, a spring (143) is connected between the scraper (142) and the return plate (141), and an electric screw (145) threadedly connected to the slide plate (14) is horizontally installed on the movable frame (8); The scraping assembly also includes a return frame (144) fixedly connected to the right movable plate (10), and the return frame (144) contacts the inner side surface of the scraper (142) to support and limit the scraper (142).

2. A porosity testing device for ceramic core detection according to claim 1, characterized in that: The immersion component comprises a vacuum defoaming box (13) fixedly connected to the bottom of the box body (1) and used for placing distilled water. A drainage port is arranged at the bottom of the vacuum defoaming box (13). The vacuum defoaming box (13) is located below the clamping plate (12). The vacuum defoaming box (13) is made of a transparent material. A liquid level sensor (131) is installed inside the vacuum defoaming box (13). A scale (132) is fixedly connected to the vacuum defoaming box (13).

3. A porosity testing device for ceramic core detection according to claim 2, characterized in that: The porosity testing device for ceramic core detection also includes a drying assembly, the drying assembly including a frame (151) slidably connected to the inner side of the box (1), the frame (151) is located on the rear side of the clamping plate (12), and the frame (151) is evenly spaced with slotted holes for hot air to pass through. A dryer (152) is installed on the frame (151), and the dryer (152) corresponds to the slotted holes of the frame (151). Electric push rods (15) are symmetrically installed on the upper rear side of the box (1), and the electric push rods (15) on the left and right sides are arranged on the upper rear side of the box (1). The ends of the telescopic rods of the left and right frames (151) are respectively fixedly connected to the rear sides of the left and right frames (151). The upper sides of the front faces of the left and right frames (1) are slidably connected with cover plates (153). The cover plates (153) are located directly in front of the frames (151). When the cover plates (153) are in contact with the frames (151), the cover plates (153) can seal the inside of the frames (151). A trigger assembly is provided between the cover plates (153) and the frames (151). When the trigger assembly is operated, the trigger assembly can drive the cover plates (153) to move.

4. A porosity testing device for ceramic core detection according to claim 3, characterized in that: The drying assembly also includes a drain pipe (157) connected to the bottom of the frame (151) and used for draining the distilled water in the frame (151).

5. A porosity testing device for ceramic core detection according to claim 4, characterized in that: The trigger assembly includes a gear (155) rotatably connected to the box body (1), a rack I (154) fixedly connected to the frame body (151), the rack I (154) moves to mesh with the gear (155), and a rack II (156) meshing with the gear (155) is fixedly connected to the cover plate (153).

6. A porosity testing device for ceramic core detection according to claim 5, characterized in that: The porosity testing device for ceramic core testing also includes a transparent window (16) fixedly connected to the front side of the box body (1), and the transparent window (16) is located on the front side of the vacuum degassing box (13).

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