A propylene marker ink throttle valve

Abstract

The utility model discloses a kind of propylene marker ink throttling valves, including valve body, fixed valve seat, movable valve stem and compression spring, valve body is sleeved in pen barrel, fixed valve seat is sleeved in first inner hole, left end is equipped with flange, flange right end surface and valve body left end surface are inlaid, fixed valve seat middle is equipped with through-hole, through-hole right end is equipped with inner conical hole, the left end of movable valve stem is equipped with outer conical surface, when marker is not working, the outside surface of this outer cone and the inner side wall of inner conical hole are inlaid, so that first inner hole and fixed valve seat inner through-hole seal are not connected, the left end of movable valve stem is equipped with blind hole, fiber pen point passes through fixed valve seat, and is inserted in blind hole. The utility model is inlaid by the elastic force of compression spring outer conical surface and inner conical surface, form seal, when writing, press pen point, pen point promotes movable valve stem to move backward, so that its outer conical surface leaves inner conical surface, form gap, ink will be quickly injected into fiber pen point from the gap, so as to guarantee the normal writing of pen point.

Description

Technical Field

[0001] This utility model relates to the field of marker technology, and in particular to an acrylic marker ink throttling valve. Background Technology

[0002] Current acrylic markers are direct-liquid markers, with an internal ink chamber to store ink. Before writing, pressing the pen tip opens the ink valve, and the ink in the chamber flows through the valve to a sponge-like water supply system to the pen tip for writing. However, the sponge-like water supply system is prone to leakage when saturated. Furthermore, when using high-concentration inks, such as metallic inks like gold or silver, the existing ink valve is prone to ink seepage in environments with high or low air pressure, resulting in poor sealing and affecting writing quality. Utility Model Content

[0003] To address the issue of ink leakage in existing acrylic marker ink valves when used with high-concentration inks in environments with high or low air pressure, this invention provides an acrylic marker ink throttling valve. This valve comprises a valve body, a fixed valve seat, a movable valve stem, and a compression spring. The spring force causes the outer and inner conical surfaces to come into contact, forming a seal. When writing, pressing the pen tip pushes the connected movable valve stem backward, causing the inner conical surface to separate from the outer conical surface. This creates a gap between the two surfaces, allowing ink from the rear of the valve body to quickly enter the fiber pen tip, which is installed in the through-hole of the fixed valve seat, ensuring normal writing. When writing stops, the compression spring on the movable valve stem returns to its original position, causing the inner and outer conical surfaces to come into contact again, sealing and blocking the ink flow.

[0004] To achieve the above objectives, this utility model provides an acrylic marker ink throttling valve, comprising a valve body, a fixed valve seat, a movable valve stem, and a compression spring. The valve body is fitted inside the pen holder and fixedly connected to it. The valve body has a first inner hole at its left end and a second inner hole coaxial with the first inner hole at its right end. The outer cylindrical surface of the right end of the fixed valve seat is fitted inside the first inner hole, and the outer cylindrical surface of its left end has an outwardly extending flange. The right end face of the flange fits against the left end face of the valve body. The fixed valve seat has a through hole in the middle, and an inner conical hole at its right end. The left end of the movable valve stem has an inner conical hole. When the marker is not in use, the outer conical surface of the outer cone fits against the inner wall of the inner conical hole, so that the first inner hole and the inner through hole of the fixed valve seat are sealed and not connected. A blind hole is provided in the left end of the movable valve rod. The fiber tip of the marker passes through the through hole of the fixed valve seat and the inner conical hole and is inserted into the blind hole. A step with a reduced outer diameter is provided on the right side of the outer cone. The right end of the outer side of the step passes through the second inner hole. The compression spring is sleeved in the first inner hole and sleeved on the outer side of the outer side of the step. The left end is connected to the right end face of the outer cone and the right end is connected to the bottom surface of the first inner hole.

[0005] Preferably, the taper of the inner conical hole is set to 30 to 40 degrees.

[0006] Preferably, the valve body has a first annular arc protrusion on the outer surface of the left end, and the valve body is fixedly connected to the inner hole of the front barrel of the marker pen through the first annular arc protrusion. The valve body has a second annular arc protrusion on the inner wall of the first inner hole, and the second annular arc protrusion is staggered from the first annular arc protrusion. The valve body is fixedly connected to the outer surface of the fixed valve seat through the second annular arc protrusion.

[0007] Preferably, the outer circular surface of the right end of the valve body is provided with a plurality of circumferentially distributed strip-shaped opening grooves, which are connected to the first inner hole.

[0008] Preferably, the outer circular surface of the right end of the movable valve stem is provided with three circumferentially distributed strip-shaped grooves.

[0009] The design of the strip-shaped opening and groove allows ink from the rear of the pen barrel to be quickly injected into the fiber pen tip, ensuring smooth writing.

[0010] Preferably, the outer cone of the movable valve stem has a first step, a second step, and a third step with gradually decreasing outer diameters on the right side from left to right. The right end face of the outer cone is used to fix the left end face of the compression spring. The outer diameter of the third step matches the inner diameter of the second inner hole and passes through the second inner hole. The outer diameter of the second step is larger than the inner diameter of the second inner hole. The right end face of the second step is used to limit the movement of the movable valve stem.

[0011] Preferably, the valve body, fixed valve seat, and movable valve stem are all made of PP plastic.

[0012] Compared to existing technologies, the advantages of this invention are as follows: By configuring a valve body, a fixed valve seat, a movable valve stem, and a compression spring, the outer conical surface of the movable valve stem is brought into contact with the inner conical surface of the fixed valve seat through the elastic force of the compression spring, forming a seal. When writing, pressing the pen tip pushes the movable valve stem connected to it backward, causing its outer conical surface to separate from the inner conical surface, thus creating a gap between the two surfaces. Ink from the rear end of the valve body quickly enters the fiber pen tip installed in the through hole of the fixed valve seat through this gap, ensuring normal writing. When writing stops, the compression spring fitted on the movable valve stem returns to its original position, causing the inner and outer conical surfaces to come into contact and seal, thereby blocking the ink flow. This invention has a simple structure, is easy to operate, has a good sealing effect, and is unaffected by ink concentration. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the non-working state of an embodiment of the present invention; Figure 2This is a cross-sectional view of the working structure of an embodiment of the present invention; Figure 3 This is a schematic diagram of the installation structure of an acrylic marker holder according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the valve body structure; Figure 5 This is a schematic diagram of the cross-sectional structure of the valve body; Figure 6 This is a schematic diagram of the sectional structure of a fixed valve seat; Figure 7 This is a schematic diagram of the movable valve stem structure; Figure 8 This is a cross-sectional view of the movable valve stem.

[0014] In the diagram: 1. Valve body, 101. First inner hole, 102. Second inner hole, 103. First annular arc protrusion, 104. Second annular arc protrusion, 105. Strip-shaped opening groove, 2. Fixed valve seat, 201. Through hole, 202. Inner conical hole, 203. Flange, 3. Movable valve stem, 301. Outer conical surface, 302. Blind hole, 303. Strip-shaped groove, 304. First step, 305. Second step, 306. Third step, 4. Compression spring, 5. Fiber pen tip, 6. Gap, 7. Front pen holder. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] like Figures 1-8As shown, this utility model embodiment includes a valve body 1, a fixed valve seat 2, a movable valve stem 3, and a compression spring 4. The valve body 1 is fitted inside a pen holder and fixedly connected to it. The left end of the valve body 1 has a first inner hole 101, and the right end of the first inner hole 101 has a second inner hole 102 coaxial with the first inner hole 101. The outer cylindrical surface of the right end of the fixed valve seat 2 is fitted inside the first inner hole 101, and the outer cylindrical surface of the left end has an outwardly extending flange 203. The right end face of the flange 203 fits against the left end face of the valve body 1. The fixed valve seat 2 has a through hole 201 in the middle, and the right end of the through hole 201 has an inner conical hole 202. The left end of the movable valve stem 3 has an outer conical hole with the same taper as the inner conical hole 202. When the marker is not in use, the outer surface of the outer cone 301 fits against the inner wall of the inner cone hole 202, so that the first inner hole 101 is sealed and not connected to the inner through hole 201 of the fixed valve seat 2. The left end of the movable valve rod 3 is provided with a blind hole 302. The fiber tip 5 of the marker passes through the through hole 201 and the inner cone hole 202 of the fixed valve seat 2 and is inserted into the blind hole 302. The right side of the outer cone 301 is provided with a step with a reduced outer diameter. The right end of the outer surface of the step passes through the second inner hole 102. The compression spring 4 is sleeved in the first inner hole 101 and sleeved on the outer side of the outer surface of the step. The left end is connected to the right end face of the outer cone 301 and the right end is connected to the bottom surface of the first inner hole 101.

[0017] Preferably, the taper α of the inner conical hole 202 is set to 38°.

[0018] Preferably, a first annular arc protrusion 103 is provided on the outer circular surface of the left end of the valve body 1. The valve body 1 is fixedly connected to the inner hole of the marker pen barrel 7 by interference fit through the first annular arc protrusion 103. A second annular arc protrusion 104 is provided on the inner side wall of the first inner hole 101 of the valve body 1. The second annular arc protrusion 104 is staggered from the first annular arc protrusion 103. The valve body 1 is fixedly connected to the outer circular surface of the fixed valve seat 2 by interference fit through the second annular arc protrusion 104.

[0019] Preferably, the outer circular surface of the right end of the valve body 1 is provided with a plurality of circumferentially distributed strip-shaped opening grooves 105, which are connected to the first inner hole 101.

[0020] Preferably, the outer circular surface of the right end of the movable valve stem 3 is provided with three circumferentially distributed strip-shaped grooves 303.

[0021] The design of the strip-shaped opening groove 105 and the strip-shaped groove 303 allows the ink in the rear of the pen barrel to be quickly injected into the fiber pen tip 5 when writing with the marker, ensuring smooth writing.

[0022] Preferably, the outer cone 301 of the movable valve stem 3 has a first step 304, a second step 305, and a third step 306 with gradually decreasing outer diameters on its right side from left to right. The right end face of the outer cone 301 is used to fix the left end face of the compression spring 4. The outer diameter of the third step 306 matches the inner diameter of the second inner hole 102 and passes through the second inner hole 102. The outer diameter of the second step 305 is larger than the inner diameter of the second inner hole 102, and the right end face of the second step 305 is used to limit the movement of the movable valve stem 3. This limiting setting can prevent the fiber pen tip 5 from being over-pressed, causing the compression spring 4 to fail prematurely and affecting its service life.

[0023] Preferably, the valve body 1, the fixed valve seat 2, and the movable valve stem 3 are all made of PP plastic.

[0024] The working principle of this invention is as follows: When writing, pressing the fiber pen tip 5 causes the connected movable valve rod 3 to move backward, compressing the compression spring 4. At this time, the outer cone 301 at the left end of the movable valve rod 3 separates from the inner cone hole 202 of the fixed valve seat, forming a gap 6 between the inner cone hole 202 and the outer cone 301. The ink in the marker pen barrel will quickly pass through this gap 6 and be injected into the fiber pen tip 5, thus ensuring smooth writing. When the fiber pen tip 5 leaves the paper or writing board, the pressure is no longer maintained, and the rebound force of the compression spring 5 causes the movable valve rod 3 to quickly return to its original position, causing the outer cone 301 to fit and seal with the inner cone hole 202, thereby blocking the injection of ink.

[0025] This invention has a simple structure, is easy to operate, has a good sealing effect, and is not affected by the concentration of the ink.

[0026] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of this utility model, and these improvements and substitutions should also be considered within the protection scope of this utility model.

Claims

1. A throttling valve for acrylic marker ink, characterized in that: The valve body comprises a valve body, a fixed valve seat, a movable valve stem, and a compression spring. The valve body is fitted inside the pen holder and fixedly connected to it. The valve body has a first inner hole at its left end and a second inner hole coaxial with the first inner hole at its right end. The fixed valve seat has its right-end outer cylindrical surface fitted inside the first inner hole, and its left-end outer cylindrical surface has an outwardly extending flange. The right end face of the flange fits against the left end face of the valve body. The fixed valve seat has a through hole in the middle, and its right end has an inner conical hole. The movable valve stem has an outer conical surface at its left end that matches the inner conical hole. When the pen is not in use, the outer surface of the outer cone fits against the inner wall of the inner cone hole, so that the first inner hole and the inner through hole of the fixed valve seat are sealed and not connected. A blind hole is provided in the left end of the movable valve rod. The fiber pen tip of the marker pen passes through the through hole of the fixed valve seat and the inner cone hole and is inserted into the blind hole. A step with a reduced outer diameter is provided on the right side of the outer cone. The right end of the outer surface of the step passes through the second inner hole. The compression spring is sleeved in the first inner hole and sleeved on the outer side of the outer surface of the step. The left end is connected to the right end face of the outer cone, and the right end is connected to the bottom surface of the first inner hole.

2. The acrylic marker ink throttling valve according to claim 1, characterized in that: The taper of the inner conical hole is set to 30 to 40 degrees.

3. The acrylic marker ink throttling valve according to claim 1, characterized in that: The valve body has a first annular arc protrusion on the outer surface of the left end. The valve body is fixedly connected to the inner hole of the front barrel of the marker pen through the first annular arc protrusion. The valve body has a second annular arc protrusion on the inner wall of the first inner hole. The second annular arc protrusion is staggered from the first annular arc protrusion. The valve body is fixedly connected to the outer surface of the fixed valve seat through the second annular arc protrusion.

4. The acrylic marker ink throttling valve according to claim 1, characterized in that: The valve body has multiple circumferentially distributed strip-shaped openings on its outer circular surface at the right end, and these strip-shaped openings are connected to the first inner hole.

5. The acrylic marker ink throttling valve according to claim 1, characterized in that: The right end of the movable valve stem has three evenly distributed circumferential grooves on its outer circular surface.

6. The acrylic marker ink throttling valve according to claim 1, characterized in that: The outer cone of the movable valve stem has a first step, a second step, and a third step with gradually decreasing outer diameter from left to right. The right end face of the outer cone is used to fix the left end face of the compression spring. The outer diameter of the third step matches the inner diameter of the second inner hole and passes through the second inner hole. The outer diameter of the second step is larger than the inner diameter of the second inner hole. The right end face of the second step is used to limit the movement of the movable valve stem.

7. The acrylic marker ink throttling valve according to claim 1, characterized in that: The valve body, fixed valve seat, and movable valve stem are all made of PP plastic.

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