An inkstone

Abstract

The utility model relates to an ink stone, belonging to the field of cultural supplies, wherein the ink stone comprises an ink stone body and an ink stone cover; the ink stone cover is embedded in the upper end of the ink stone body, is buckled with the ink stone body, and is locked on the ink stone body by a self-locking device; the ink stone body comprises a seat body, an ink stone, an ink pool, a water adding device, an ink strip warehouse, a writing brush warehouse, a water outlet, an ink strip supporting block and a clamping groove; the ink stone has the characteristics of multiple functions, convenient carrying and convenient use.

Description

Technical Field

[0001] This invention belongs to the field of cultural products, and specifically relates to a multifunctional inkstone for grinding ink. Background Technology

[0002] The Four Treasures of the Study (brush, inkstone, paper, and inkstone) are important cultural items in traditional Chinese culture and representative of literati culture. Among them, the inkstone, as one of the Four Treasures, has evolved over many years from its simple function of grinding ink and holding ink to an item that integrates carving, application, appreciation, and collection. Through years of evolution, the inkstone has made great progress in terms of materials, functions, and artistic effects. However, in practical use, it has been found that existing inkstones still have some shortcomings, such as limited functions, inconvenience in carrying, and difficulty in immediate use. For example, most inkstones do not have lids, and even if they do, they are just snap-on lids that can easily come off when the inkstone is turned upside down, causing the lid to break or be damaged. Another issue is that small amounts of water need to be added during use, and the amount of water added is not easy to control. If you want to control it well, you need a special water-adding tool, which makes it inconvenient to carry. Third, the main function of the inkstone is to grind ink, and the material for grinding ink is the ink stick, which is prone to fading and is not easy to carry, especially since there is still ink residue on the ink stick after grinding, which further increases the difficulty of carrying. Summary of the Invention

[0003] To address the aforementioned problems with existing inkstones, this invention proposes an inkstone with a lid that is not easily detached and simultaneously enables automatic water filling and ink stick storage. The specific technical solution is as follows: an inkstone characterized by: the inkstone comprising an inkstone body and an inkstone lid; the inkstone lid is fitted into the upper end of the inkstone body, fastened to the inkstone body, and secured to the inkstone body by a self-locking device; the inkstone body comprising a base, an inkwell, an ink pool, a water filling device, an ink stick compartment, a brush compartment, a water outlet, an ink stick support block, and a slot; the base is made from raw inkstone stone; the inkwell is located on the upper part of the base, in the middle of the upper part of the base, and is recessed, lower than the upper surface of the base. The inkstone surface is provided with an ink channel at the junction of the inkstone and the inkwell, connecting the inner cavity of the inkstone and the inkwell. The inkwell is located on one side of the inkstone, and is recessed, with its bottom lower than the bottom of the connecting channel between the inkstone and the inkwell. The water filling device is installed in the base and located in the water filling device mounting hole on the base, allowing it to be freely removed and inserted, with its water outlet connected to the water outlet. The ink stick compartment is located on one side of the inkstone, and is a recessed groove, the width and length of which are greater than the width and length of the ink stick, and the depth of the recessed groove is greater than the thickness of the ink stick. The brush compartment is located on the base and is a hole, the depth of which is greater than the length of the brush. The diameter of the inkstone is larger than that of the brush; the opening of the brush chamber is fitted with a cover, which engages with the brush chamber and can be freely fastened and removed; the water outlet is located on the side wall of the inkstone and is connected to the water outlet pipe of the water filling device; the water outlet is higher than the surface of the inkstone and the water flowing from the outlet can flow within the inkstone; the ink stick support is located inside the ink stick chamber and at the bottom of the ink stick chamber, and is a single or multiple protrusions; the slot is located on the side wall between the upper surface of the base and the upper surface of the inkstone and is a recessed structure; the cross-sectional height of the slot should be greater than the thickness of the step of the insert plate on the inkstone cover, and the greater dimension should be greater than or equal to the thickness of the locking device. The inkstone cover is provided with insert plates, protrusions, and a locking device. The insert plates are located on both sides of the inkstone cover, and the thickness of the insert plates is less than the height of the slots on the inkstone body. The distance between the outer sides of the two insert plates is less than or equal to the distance between the bottoms of the corresponding slots on both sides of the inkstone body. The protrusions are located on the top of the inkstone cover, inside the insert plates. The height of the protrusions should be such that the upper surface of the protrusions is flush with the upper surface of the inkstone body after the inkstone cover is inserted into the slots on the inkstone body. The locking device is located on the lower surface of the inkstone cover and at the rear end of the inkstone cover. The rear edge of the locking device engages with the rear edge of the ink stick compartment after the inkstone cover is fully inserted into the slots on the inkstone body.

[0004] Furthermore, a small inkwell is provided in the center of the inkstone, which is suitable for using a small amount of ink.

[0005] Furthermore, the opening of the brush container is provided with a limiting groove that matches the container cover.

[0006] Furthermore, the compartment cover is made of rubber or plastic elastic material.

[0007] Furthermore, the front edge of the inkstone cover is also provided with an insert plate, which matches the slot on the front end of the inkstone body.

[0008] Furthermore, the upper surface of the inkstone cover is provided with an inkstone pool, which is a micro-recess, the depth of which is less than the thickness of the inkstone cover and greater than 0.2 mm.

[0009] Furthermore, the locking device is a protrusion, a recess, or a buckle.

[0010] Furthermore, the water filling device includes a water outlet pipe, a one-way valve, a front end seat, a locking groove, a locking pin, a water tank body, a water tank cover, a pressure piston, a front connecting seat, a front coupling interface, a rear coupling interface, a sealing ring, a water injection hole, a front valve plate, a front piston, a piston rod, a return spring, and a piston button; the water outlet pipe is installed on the one-way valve, with one end connected to the one-way valve and the other end connected to the water outlet on the inkstone body; the one-way valve is installed on the front end seat and connected to the front front end seat; the water inlet of the one-way valve is connected to the inner cavity of the front connecting seat, and the water outlet of the one-way valve is connected to the water outlet pipe; the one-way valve is for one-way water flow; the front end seat is installed in the water filling device mounting hole of the inkstone body and is fixedly connected to the inkstone body; the locking groove is located on the front end seat. The side wall of the opening end of the end seat is L-shaped; the locking pin is located at the front end of the water tank and is fixedly connected to the water tank; the diameter of the locking pin matches the width of the locking groove; the water tank is installed on the front end seat, fitting together with the front end seat, and connected by tightening the locking pin and the locking groove; the water tank is a hollow body, the inner cavity is divided into a pressure chamber and a storage chamber, the pressure chamber is at the front end, and the storage chamber is at the rear end; the water tank cover is located at the opening end of the water tank and is detachably connected to the water tank; the pressure piston is installed in the water tank and fitted with the water tank cover; the pressure piston includes a front valve plate, a front piston, a piston rod, and a piston button; the front connecting seat is installed in the inner cavity of the front end seat and is connected to the inner cavity of the front end seat. The cavity is fixedly connected; the front coupling interface is located on the front connecting seat and is a conical hole with a water outlet hole communicating with a one-way valve on the side wall of the conical hole; the rear coupling interface is located at the front end of the water tank and is fixedly connected to the water tank; the rear coupling interface is a conical protrusion, and the shape and size of the cone match the conical hole of the front coupling interface; the sealing ring is installed on the outer periphery of the rear coupling interface and can seal the contact surfaces of the front and rear coupling interfaces; the water injection hole is located on the rear coupling interface and penetrates through the rear coupling interface to communicate with the inner cavity of the water tank; the front valve plate is installed in front of the front piston, and its middle part is connected to the front surface of the front piston; the front valve plate is made of rubber or plastic and other thin-walled elastic materials; the front piston is located on the front piston... The front end of the plunger rod is connected to the piston rod and installed in the pressure chamber at the front end of the water tank body, allowing it to move within the pressure chamber. A guide hole is provided on the front piston, penetrating the thickness of the front piston. The piston rod is installed between the front piston and the piston button, with both ends connected to the front piston and the piston button respectively, and the middle part fitted onto the water tank cover. A limit ring is installed on the piston rod, fitted onto the piston rod and located in front of the water tank cover, limiting the return stroke of the entire pressure piston. A return spring, a helical compression spring, is installed between the water tank cover and the piston button, capable of pushing the piston button and thus pushing the pressure piston to reset. The piston button is installed at the rear end of the piston rod and connected to it.

[0011] Furthermore, the front piston has multiple flow guide holes.

[0012] Furthermore, the water outlet pipe is a flexible water pipe.

[0013] Furthermore, the piston rod and the water tank cover assembly are equipped with a sealing structure to prevent water leakage between the piston rod and the water tank cover.

[0014] Furthermore, the connection between the water tank cover and the water tank body is equipped with a sealing structure, which can seal the connection between the water tank body and the water tank cover to prevent water leakage.

[0015] In this article, Figure 2 The middle inkwell is the front end, the ink bar inkwell is the rear end, and the left and right sides are the left and right sides when facing the view.

[0016] Beneficial effects The beneficial effects of this invention are that it enables the inkstone to have multiple functions, is easy to carry, and allows one to complete calligraphy and painting tasks simply by carrying this inkstone. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the inkstone body and inkstone cover in a semi-locked-on state according to the present invention. Figure 2 This is a schematic diagram of the inkstone body and inkstone cover of the present invention in their separated state. Figure 3 This is a schematic diagram of the structure from a downward angle of the present invention. Figure 4 This is a schematic diagram of one embodiment of the bottom structure of the ink stick compartment on the inkstone body of the present invention. Figure 5 This is a schematic diagram of one embodiment of the water adding device of the present invention. Figure 6 yes Figure 5 Cross-sectional structural diagram Figure 7 This is a partial cross-sectional structural diagram of the water outlet pipe at the front end of the water supply device. Figure 8 This is a schematic diagram of the external structure of the water filling device after removing the front end seat. 1. Inkstone body, 2. Inkstone cover, 11. Base, 12. Inkstone surface, 13. Inkwell, 14. Water filling device, 15. Ink stick compartment, 16. Brush compartment, 17. Water outlet, 18. Ink stick support block, 19. Slot, 21. Insert plate, 22. Boss, 23. Locking device, 24. Covered inkwell, 31. Water outlet pipe, 32. One-way valve, 33. Front end seat, 34. Locking groove, 35. Locking pin, 36. Water tank body, 37. Water tank cover, 38. Water pressure piston, 39. Front connecting seat, 40. Front connection interface, 41. Rear connection interface, 42. Sealing ring, 43. Water inlet hole, 44. Front valve plate, 45. Front piston, 46. Piston rod, 47. Return spring, 48. Piston button. Detailed Implementation

[0018] To better illustrate the technical solution of the present invention, specific embodiments of the present invention will now be further described in conjunction with the accompanying drawings, such as... Figures 1-8In this example, a flexible plastic tube is selected as the water outlet pipe 31. The water outlet pipe 31 is installed on the one-way valve 32, with one end connected to the one-way valve 32 and the other end connected to the water outlet 17 on the inkstone body 1. In this example, a ball-type one-way valve or a diaphragm-type one-way valve commonly used in this industry is selected as the one-way valve 32. The one-way valve 32 is installed on the front end seat 33 and connected to the front end seat 33. It is ensured that the water inlet of the one-way valve 32 is connected to the inner cavity of the front connecting seat 39, and the water outlet of the one-way valve 32 is connected to the water outlet pipe 31. The installation direction of the one-way valve 32 is one-way water outlet, that is, water can only exit and not enter. The front end seat 33 is installed in the water filling device mounting hole of the inkstone body 1 and fixedly connected to the inkstone body 1. In this example, a ball-type one-way valve or a diaphragm-type one-way valve is selected as the one-way valve 32. A slot is provided in the mounting hole of the water filling device, and a corresponding locking block is provided on the front end seat 33 for connection; an L-shaped tightening locking groove commonly used in this industry is selected as the locking groove 34, which is set on the side wall of the opening end of the front end seat 33 and penetrates through the side wall; the locking pin 35 is set at the front end of the water tank 36 and fixedly connected to the water tank 36; in this example, a cylindrical pin is selected as the shape of the locking pin 35, and the diameter of the locking pin 35 matches the width of the locking groove 34 to ensure that the locking pin 35 can move smoothly in the locking groove 24; the water tank 36 is installed on the front end seat 33, fitted with the front end seat 33, and connected by tightening the locking pin 35 and the locking groove 34; the water tank 36 is installed on the front end seat 33, fitted with the front end seat 33, and connected by tightening the locking pin 35 and the locking groove 34; the water tank 36 is installed on the front end seat 33, fitted with the front end seat 33, and connected by tightening the locking pin 35 and the locking groove 34; the locking pin 35 is installed on the front end seat 33, which is commonly used in this industry, and the locking groove 34 is fixedly ... The rear end of 36 is a hollow cavity that can hold water without leaking. In this example, a recessed cover is chosen as the water tank cover 37. This allows the water filling device 14 to be concealed on the inkstone body 1, increasing aesthetics without affecting portability. The water tank cover 37 is installed at the opening end of the water tank body 36 and screwed onto the water tank body 36. A sealing ring is provided between the water tank cover 37 and the water tank body 36. The selected water-pressing piston 38 includes a front valve plate 44, a front piston 45, a piston rod 46, and a piston button 48. The water-pressing piston 38 is installed inside the water tank body 36 and fitted onto the water tank cover 37. A sealing ring is installed between the piston rod 46 and the water tank cover 37 to ensure that the piston rod 46 can move inside the water tank cover 37 without leaking. During installation, the front piston 45 is located in the water tank body 36. The front end of 6; the front connecting seat 41 is installed in the inner cavity of the front end seat 33 and fixedly connected to the inner cavity of the front end seat 33; the front connecting interface 40 is set on the front connecting seat 39, and is a conical hole with a water outlet hole communicating with a one-way valve on the side wall of the conical hole; the rear connecting interface 41 is set at the front end of the water tank 36 and fixedly connected to the water tank 36; the rear connecting interface 41 is selected as a conical protrusion, and the shape and size of the cone match the conical hole of the front connecting interface 40; the sealing ring 42 is installed in the sealing ring groove on the outer periphery of the rear connecting interface 41, which can seal the contact surface of the front connecting interface 40 and the rear connecting interface 41; the water injection hole 43 is set on the rear connecting interface 41 and communicates with the inner cavity of the water tank 36 through the rear connecting interface 41.In this example, a rubber sheet with a thickness of less than 1 mm is selected as the front valve plate 44. The front valve plate 44 is installed in front of the front piston 45, with its middle part fixedly connected to the front surface of the front piston 45. The front valve plate 44 and the guide hole on the front piston 45 cooperate to form a one-way valve on the front piston 45. The front piston 45 is set at the front end of the piston rod 46 and connected to the piston rod 46. The front piston is provided with a guide hole that penetrates the thickness of the front piston. The piston rod 46 is installed between the front piston 45 and the piston button 48, with both ends connected to the front piston 45 and the piston button 48 respectively, and the middle part fitted with the water tank cover 37. A limiting ring is installed on the piston rod 46, which is fitted onto the piston rod 46 and located in the water tank. The front of the cover 37 is fixedly connected to the piston rod 46 by a set screw. Loosening the set screw allows adjustment of the position of the limiting ring on the piston rod 46, thus limiting the return stroke of the entire strip-shaped water-pressing piston 38. This ensures water supply without exposing the piston button 48 to the outside of the inkstone body 1 or causing the front piston 45 to dislodge from the water-pressing chamber at the front end of the water tank 36. A commonly used spiral cylindrical compression spring is selected as the return spring 47. The return spring 47 is installed between the water tank cover 37 and the piston button 48, which pushes the piston button 48 and thus pushes the entire water-pressing piston 38 to its reset position. The piston button 48 is installed at the rear end of the piston rod 46 and connected to the piston rod 46, thus completing the implementation of the water-filling device 14.

[0019] In this example, the inkstone commonly used in this industry is selected as the material for the inkstone body 1 and the inkstone cover 2. The raw inkstone is polished and carved into shape, serving as the inkstone body 1 and the inkstone cover 2 respectively. Taking a rectangular inkstone as an example, the inkstone is first carved into a rectangular block to serve as the base 11. The inkstone well 12 is carved on the upper surface of the base 11, located in the upper center of the base 11. It is recessed and lower than the upper plane of the base 11. In this example, the inkstone well 12 is carved in a form that is deeper in the middle and shallower around the edges. An ink channel is set at the junction of the inkstone well 12 and the ink pool 13. The channel can connect the inner cavity of the inkstone well 12 and the ink pool 13. The ink pool 13 is set on one side of the inkstone well 12, and is recessed, with its bottom lower than the bottom of the connecting channel between the inkstone well 12 and the ink pool 13. The water-adding device 13 is installed inside the base 11 and located in the water-adding device mounting hole on the base 11. It can be freely removed and inserted to replenish the water storage of the water-adding device 14. The water outlet pipe 31 of the water-adding device 14 is connected to the water outlet 17. In this example, the water-adding device mounting hole and the water outlet channel are dug out by drilling a hole in the base 11. If a blind hole is encountered, it is temporarily opened up to serve as a process hole. After the channel is completed, the process hole is sealed with glue or by mixing inkstone powder with glue, so that a channel can be set inside the base 11. The ink stick compartment 15 is set on one side of the inkstone surface 12 and is in the shape of a recessed groove. The width and length of the recessed groove are greater than the width and length of the ink stick, respectively, and the depth of the recessed groove is greater than the thickness of the ink stick. The specific location of the brush holder 16 on the side of the inkstone 12 is determined according to the overall size and layout of the inkstone. The brush holder 16 is placed on the base 11 and is perforated, with the depth of the hole greater than the length of the brush and the diameter greater than the maximum diameter of the brush. A plastic cover is installed at the opening of the brush holder 16, and an annular groove is carved at the opening of the brush holder 16 to match the cover and prevent it from falling off. The cover and brush holder are fastened together, allowing for easy fastening and removal. The water outlet 17 is located on the side wall of the inkstone 12 and connected to the water outlet pipe 31 of the water filling device 14. The water outlet 17 is set higher than the inkstone surface to ensure that the water flowing from the outlet 17 can flow into the inkstone 12. The ink stick support block 18 is set inside the ink stick chamber 15 and located at the bottom of the ink stick chamber 15, which facilitates installation or carving. In this example, the ink stick support block 18 is composed of multiple protrusions, mainly to prevent the ink stick from contacting the flat bottom and causing bottom contamination. Especially after grinding ink with an ink stick, some ink will remain on the ink stick, so it is even more necessary to prevent ink from spreading everywhere. In this example, a door-shaped notch is opened at the top of the base 11, and slots 19 are set on the three side walls of the notch. It is a recessed structure. The cross-sectional height of the slot 19 is greater than the thickness of the step of the insert plate 21 on the inkstone cover 2. The greater dimension should be greater than or equal to the thickness of the locking device 24. In this example, the inkstone cover 2 is provided with an insert plate 21, a protrusion 22 and a locking device 23.The insert plates 21 are placed on the three front sides of the inkstone cover 2. The thickness of the insert plates 21 is less than the height of the slots 19 on the inkstone body 11. The distance between the outer sides of the two insert plates 21 is less than or equal to the distance between the bottoms of the corresponding slots 19 on the two sides of the inkstone body 11, which is greater than the distance between the two inner sides of the door-shaped notch. The protrusion 22 is placed on the top of the inkstone cover 2, located inside the insert plates 21. The height of the protrusion 22 should be such that after the inkstone cover 2 is inserted into the slot 19 on the inkstone body 1, the upper surface of the protrusion 22 is flush with the upper surface of the inkstone body, which is aesthetically pleasing and convenient to carry. In this example, a protrusion is used as the locking device 23. The locking device 23 is set as... The locking device 23 is placed on the lower surface of the inkstone cover 2 and located at the rear end of the inkstone cover 2. After the inkstone cover 2 is fully inserted into the slot 19 on the inkstone body 1, the rear edge of the locking device 23 engages with the rear edge of the ink stick compartment 15, ensuring that the locking device 23 prevents the inkstone cover 2 from automatically detaching from the inkstone body 1. Alternatively, a recess or hole can be provided on the underside of the inkstone cover 1, and a corresponding protrusion can be provided at the same position on the upper surface of the inkstone body 1. This generally achieves locking. To better utilize the locking function, an elastic element can also be provided above the junction of the inkstone cover 1 and the slot 19 to enhance the automatic function of the locking device 23. This completes the implementation of the present invention.

[0020] In application, the use of a slot-type inkstone cover 2 combined with a locking device 23 achieves the functions of moisturizing the inkstone and preventing external debris from entering the inkstone chamber, while also being easy to carry and preventing the inkstone cover 2 from automatically falling off. The use of an ink stick compartment 15 reduces the inconvenience of carrying ink sticks. At the same time, the setting of an ink stick support device 18 prevents the ink stick from being contaminated. The setting of a water filling device 14 avoids the difficulty in controlling water filling and the need for external water intake, enabling quantitative water filling and self-supply. The setting of a brush compartment 16 avoids the trouble of needing to carry a brush elsewhere, allowing one to write or paint while holding the inkstone. The functions of the inkstone are increased, and the trouble of using the inkstone is reduced.

Claims

1. An inkstone, characterized by: The inkstone includes an inkstone body and an inkstone cover. The inkstone cover is fitted into the upper part of the inkstone body, fastening to it, and has a self-locking device to lock the inkstone cover onto the inkstone body. The inkstone body includes a base, an inkwell, an ink pool, a water filling device, an ink stick compartment, a brush compartment, a water outlet, an ink stick support block, and a slot. The base is made from the original inkstone stone. The inkwell is located on the top of the base, in the middle of the top surface, and is recessed, lower than the upper plane of the base. An ink channel is provided at the junction of the inkwell and the ink pool, connecting the inkwell and the inner cavity of the ink pool. The ink pool is located on one side of the inkwell. The inkstone is recessed, with its bottom lower than the bottom of the connecting channel between the inkstone and the inkwell. The water-filling device is installed inside the base and within a water-filling device mounting hole on the base, allowing for free removal and insertion. Its water outlet pipe is connected to the water outlet. The ink stick compartment is located on one side of the inkstone, and is a recessed groove. The width and length of the groove are greater than the width and length of the ink stick, respectively, and the depth of the groove is greater than the thickness of the ink stick. The brush compartment is located on the base and is perforated. The depth of the perforation is greater than the length of the brush, and the diameter of the perforation is greater than the diameter of the brush. A cover is installed at the opening of the brush compartment, and the cover is connected to the brush. The inkstone holder can be easily fastened and removed; the water outlet is located on the side wall of the inkstone chamber and is connected to the water outlet pipe of the water filling device; the water outlet is higher than the surface of the inkstone chamber, allowing the water flowing from the outlet to circulate within the inkstone chamber; the ink stick support block is located inside the ink stick holder and at the bottom of the ink stick holder, and consists of one or more protrusions; the locking groove is located on the side wall between the upper surface of the base and the upper surface of the inkstone chamber, and is a recessed structure; the cross-sectional height of the locking groove should be greater than the thickness of the step of the insert plate on the inkstone cover, and the greater dimension should be greater than or equal to the thickness of the locking device; the inkstone cover is equipped with an insert plate, a protrusion, and a lock. The device includes: insert plates on both sides of the inkstone cover, the thickness of which is less than the height of the slots on the inkstone body, and the distance between the outer sides of the insert plates being less than or equal to the distance between the bottoms of the corresponding slots on both sides of the inkstone body; a protrusion on the top of the inkstone cover, located inside the insert plates; the height of the protrusion should be such that its upper surface is flush with the upper surface of the inkstone body after the inkstone cover is inserted into the slot; and a locking device on the lower surface of the inkstone cover, located at the rear end of the inkstone cover, with its rear edge engaging with the rear edge of the ink stick compartment after the inkstone cover is fully inserted into the slot on the inkstone body.

2. The inkstone according to claim 1, characterized in that: The compartment cover is made of rubber or plastic elastic material.

3. The inkstone according to claim 1, characterized in that: The inkstone cover is also provided with an insert plate at the front edge, and the insert plate matches the slot at the front end of the inkstone body.

4. The inkstone according to claim 1, characterized in that: The inkstone cover has an inkwell on its upper surface. The inkwell is a micro-recess, and the depth of the recess is less than the thickness of the inkstone cover but greater than 0.2 mm.

5. The inkstone according to claim 1, characterized in that: The locking device is a protrusion, a recess, or a buckle.

6. The inkstone according to claim 1, characterized in that: The water filling device includes a water outlet pipe, a one-way valve, a front end seat, a locking groove, a locking pin, a water tank body, a water tank cover, a pressure piston, a front connecting seat, a front connector, a rear connector, a sealing ring, a water injection hole, a front valve plate, a front piston, a piston rod, a return spring, and a piston button. The water outlet pipe is installed on the one-way valve, with one end connected to the valve and the other end connected to the water outlet on the inkstone body. The one-way valve is installed on the front end seat and connected to it. The inlet of the one-way valve is connected to the inner cavity of the front connecting seat, and the outlet of the one-way valve is connected to the water outlet pipe. The one-way valve provides one-way water flow. The front end seat is installed in the water filling device mounting hole on the inkstone body and is fixedly connected to it. The locking groove is located in the opening of the front end seat. The side wall at one end of the opening is L-shaped; the locking pin is located at the front end of the water tank and is fixedly connected to the water tank; the diameter of the locking pin matches the width of the locking groove; the water tank is mounted on the front end seat, fitting together with the front end seat, and connected by tightening the locking pin and the locking groove; the water tank is a hollow body, the inner cavity is divided into a pressure chamber and a storage chamber, the pressure chamber is at the front end, and the storage chamber is at the rear end; the water tank cover is located at one end of the opening of the water tank and is detachably connected to the water tank; the pressure piston is installed in the water tank and fitted with the water tank cover; the pressure piston includes a front valve plate, a front piston, a piston rod, and a piston button; the front connecting seat is installed in the inner cavity of the front end seat and fixed to the inner cavity of the front end seat. The connection is as follows: the front coupling interface is located on the front connecting seat and is a conical hole with a water outlet hole communicating with a one-way valve on the side wall of the conical hole; the rear coupling interface is located at the front end of the water tank and is fixedly connected to the water tank; the rear coupling interface is a conical protrusion, and the shape and size of the cone match the conical hole of the front coupling interface; the sealing ring is installed on the outer periphery of the rear coupling interface to seal the contact surfaces of the front and rear coupling interfaces; the water injection hole is located on the rear coupling interface and penetrates through the rear coupling interface to communicate with the inner cavity of the water tank; the front valve plate is installed in front of the front piston, and its middle part is connected to the front surface of the front piston; the front valve plate is made of rubber or plastic and other thin-walled elastic materials; the front piston is located on the piston rod. The front end of the piston is connected to the piston rod and installed in the pressure chamber at the front end of the water tank body 36, allowing it to move within the pressure chamber. A guide hole is provided on the front piston, penetrating the thickness of the front piston. The piston rod is installed between the front piston and the piston button, with both ends connected to the front piston and the piston button respectively, and the middle part fitted onto the water tank cover. A limit ring is installed on the piston rod, fitted onto the piston rod and located in front of the water tank cover, limiting the return stroke of the entire pressure piston. A return spring, a helical compression spring, is installed between the water tank cover and the piston button, capable of pushing the piston button and thus pushing the pressure piston to reset. The piston button is installed at the rear end of the piston rod and connected to it.

7. An inkstone according to claim 6, characterized in that: The front piston has multiple flow guide holes.

8. An inkstone according to claim 6, characterized in that: The water outlet pipe is a flexible water pipe.

9. An inkstone according to claim 6, characterized in that: The piston rod and the water tank cover assembly are equipped with a sealing structure to prevent water leakage between the piston rod and the water tank cover.

10. An inkstone according to claim 1, characterized in that: The connection between the water tank cover and the water tank body is equipped with a sealing structure, which can seal the connection between the water tank body and the water tank cover to prevent water leakage.

Images