Split type valve element

Abstract

The invention relates to the technical field of valve elements, and discloses a split type valve element which comprises a valve rod body, the outer side of the valve rod body is sleeved with a valve element body, the valve element body is composed of a valve body hexagonal cap and a valve element sleeve in a clamping mode, and a clamping spring is arranged between the valve rod body and the valve body hexagonal cap; a valve rod sealing ring and a valve rod hand feeling ring are arranged in a cavity formed between the valve body hexagonal cap and the valve rod body, and the outer side of the valve body hexagonal cap is sleeved with the valve body sealing ring. According to the split type valve element and valve rod sealing, a traditional structure that a groove is turned on the valve rod to be sleeved with a sealing ring is not adopted, the hole diameter of a valve rod hole of the valve body is increased, the valve rod is directly sleeved with the sealing ring, and the position of the valve rod is fixed through a hand feeling ring and a clamping spring. In a larger size range, the pressure on the ceramic chip can be greatly reduced due to the deformation of the O-shaped ring of the valve rod, so that the valve core is light and smooth in hand feeling.

Description

Technical Field

[0001] This invention relates to the field of valve core technology, specifically to a split-type valve core. Background Technology

[0002] The valve core is the core component of a valve that controls fluid direction, pressure, or flow through its movement. It is commonly found in devices such as faucets, solenoid valves, and hydraulic servo valves. Split-type valve cores, with their head separated from the body, reduce frictional losses during movement and improve valve durability. Existing integral valve cores have the following problems:

[0003] 1. The groove between the limiting block and the fixed ceramic plate is difficult to position precisely, resulting in a large number of defective products and a low pass rate;

[0004] 2. During cold heading, the punch bar for machining the positioning groove is easily worn out, resulting in high machining costs;

[0005] 3. The water outlet is processed using a laser cutting machine because the water outlet is a small individual part, the processing cost is high, and the cutting speed is relatively slow. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a split-type valve core, which has the advantage of improving the valve core's pass rate and solving the problem of high valve core cost.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A valve stem body is included, a valve core body hexagonal cap is sleeved on the outer side of the valve stem body, a retaining spring is provided between the valve stem body and the valve core body hexagonal cap, a valve stem sealing ring and a valve stem feel ring are provided in the cavity formed between the valve core body hexagonal cap and the valve stem body, a valve body sealing ring is sleeved on the outer side of the valve core body hexagonal cap, a ceramic moving plate is sleeved on the bottom of the valve stem body, a ceramic stationary plate is pressed against the bottom of the ceramic moving plate, silicone is sleeved on the bottom of the ceramic stationary plate, and the ceramic stationary plate is fixed inside a stationary plate fixing ring. The stationary plate fixing ring is fixed to the inner wall of the valve core sleeve by an inverted triangle designed on its outer wall. The valve core sleeve is positioned and connected to the valve core body by a limiting protrusion designed on the inner wall of the valve core body hexagonal cap and a slot on the upper part of the valve core sleeve. The valve core body is positioned and connected by the limiting protrusion on the inner wall of the valve core body hexagonal cap and a slot on the upper part of the valve core sleeve.

[0008] When the depth tolerance of the faucet body is relatively large, changing the thickness of the silicone can greatly reduce the pressure on the ceramic disc due to the deformation of the valve stem O-ring within a larger range, making the valve core safer to use.

[0009] Preferably, the inner wall of the hexagonal cap of the valve core body is designed with a limiting protrusion structure, and the upper part of the valve core sleeve is designed with a slot positioning structure.

[0010] Preferably, the stationary plate fixing ring is fixed to the inner wall of the valve core sleeve by an inverted triangle designed on the outer wall.

[0011] Preferably, the ceramic moving plate, the ceramic stationary plate, and the silicone are located inside the valve core sleeve.

[0012] Preferably, the valve core sleeve has a water outlet hole and a small hole that matches the fixing ring of the ceramic stationary plate.

[0013] In summary, the present invention has at least one of the following beneficial effects:

[0014] 1. This split-type valve core does not use the traditional structure of machining a groove on the valve stem to fit the sealing ring. Instead, it increases the diameter of the valve stem hole in the valve body, and the sealing ring is directly fitted onto the valve stem. The valve stem position is fixed by a hand feel ring and a snap ring. With this design, when the depth tolerance of the faucet body is relatively large, the thickness of the silicone can be changed. Within a large range, the deformation of the valve stem O-ring can greatly reduce the pressure on the ceramic disc, making the valve core safer to use.

[0015] 2. This split-type valve core uses a designed hole to install a ceramic stationary plate, which simplifies the assembly of the valve core. A ceramic ring is used to fix the ceramic stationary plate. The outer wall of the ceramic ring is designed with two inverted triangles whose size matches the hole of the ceramic plate sleeve. The inner wall is designed with two protrusions at the corresponding positions to fix the ceramic stationary plate. This perfectly solves the problem of using tube material to automatically cut the ceramic sleeve with laser, thereby reducing the processing cost of the valve core.

[0016] 3. This split-type valve core features a simpler design using a hexagonal cap with a wire cold-forged structure. Specifically, the limiting protrusion for the ceramic moving plate and the limiting groove for fixing the ceramic stationary plate are separated into two components. The fixing method is altered by changing the structure of the ceramic stationary plate, adding a stationary plate fixing ring to secure it. This facilitates automated valve core assembly. The stationary plate fixing ring secures the ceramic stationary plate, and its outer wall features two inverted triangles matching the size of the ceramic plate sleeve holes. The inner wall has two protrusions at corresponding positions to fix the ceramic stationary plate. This perfectly solves the problem of using tubing for laser-cut valve core sleeves, thus reducing valve core processing costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the valve core of the present invention;

[0018] Figure 2 This is a schematic diagram of the valve stem structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the ceramic moving plate structure of the present invention;

[0020] Figure 4This is a schematic diagram of the hexagonal cap structure of the valve core body of the present invention;

[0021] Figure 5 This is a schematic diagram of the stationary plate fixing ring structure of the present invention;

[0022] Figure 6 This is a schematic diagram of the valve body sleeve structure of the present invention;

[0023] Figure 7 This is a schematic diagram of the ceramic stationary sheet structure at different angles according to the present invention.

[0024] The components include: 1. Hexagonal cap for valve core body; 2. Valve stem body; 3. Valve core sleeve; 4. Ceramic moving plate; 5. Stationary plate retaining ring; 6. Ceramic stationary plate; 7. Silicone; 8. Sealing ring; 9. Snap ring; 10. Hand feel ring. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1-7 The valve core is a split type, including a valve stem body 2, a valve core body hexagonal cap 1 sleeved on the outside of the valve stem body 2, a retaining spring 9 between the valve stem body 2 and the valve core body hexagonal cap 1, a valve stem sealing ring 8 and a valve stem feel ring 10 in the cavity formed between the valve core body hexagonal cap 1 and the valve stem body 2, a valve body sealing ring 8 sleeved on the outside of the valve core body hexagonal cap 1, a ceramic moving plate 4 sleeved on the bottom of the valve stem body 2, a ceramic stationary plate 6 pressed against the bottom of the ceramic moving plate 4, a silicone 7 sleeved on the bottom of the ceramic stationary plate 6, and the ceramic stationary plate 6 fixed in the stationary plate fixing ring 5. The stationary plate fixing ring 5 is fixed to the inner wall of the valve core sleeve 3 by an inverted triangle designed on the outer wall. The valve core sleeve 3 is positioned and connected to the valve core body by a limiting protrusion designed on the inner wall of the valve core body hexagonal cap 1 and a slot on the upper part of the valve core sleeve 3. The valve core body is positioned and connected by a limiting protrusion on the inner wall of the valve core body hexagonal cap 1 and a slot on the upper part of the valve core sleeve 3.

[0027] Through the above technical solution, the valve core adopts a split structure, dividing the valve core body into two parts: the valve core body hexagonal cap 1 and the valve core sleeve 3. The valve core body hexagonal cap 1 only cold-forges the limiting block, without cold-forging the ceramic stationary plate 6 groove, which greatly reduces the cold-forging processing cost and improves the product qualification rate.

[0028] Cold heading is a new type of metal pressure processing technology with minimal cutting. It is a processing method that utilizes the plastic deformation of metal under external force and uses a mold to redistribute and transfer the metal volume to form the required parts or blanks.

[0029] The valve core connection method is that the valve core sleeve 3 uses a pipe fitting to be cut by an automatic laser cutting machine. Two notches are cut according to the width of the limit block. When connecting, the notches are inserted into the limit block and pressed in. The ceramic sleeve is clamped by the outer diameter tolerance and the notch depth, and the length of the product is accurately clamped.

[0030] During laser cutting, a water outlet hole and a small positioning hole for the ceramic stationary plate 6 are cut at the designated position on the valve core sleeve 3. In this way, the valve core sleeve 3 completes all the functions of the valve core body. The retaining ring 9, the valve core sealing ring 8, and the valve stem feel ring 10 ensure a tight connection between the valve stem body 2 and the hexagonal cap 1 of the valve core body, making water leakage less likely. The ceramic moving plate 4 and the ceramic stationary plate 6 are mainly used to replace traditional metal sealing surface components, and the valve performance is improved by using high-hardness, wear-resistant, and corrosion-resistant ceramic materials.

[0031] Specifically, the valve core body hexagonal cap 1 has a limit protrusion structure on its inner wall, the valve core sleeve 3 has a slot positioning structure on its upper part, and the stationary plate fixing ring 5 is fixed to the inner wall of the valve core sleeve 3 by an inverted triangle designed on the outer wall.

[0032] Through the above technical solutions, the valve stem body 2, sealing ring 8, and tactile ring 10 ensure a tight connection between the valve stem body 2 and the hexagonal cap 1 of the valve core body, making water leakage less likely. The stationary plate fixing ring 5 and ceramic stationary plate 6 are mainly used to replace traditional metal sealing surface components, and the valve performance is improved by using high-hardness, wear-resistant, and corrosion-resistant ceramic materials. The snap ring 9 located on the outside of the hexagonal cap 1 of the valve core body can improve the sealing performance of the valve core. The part of the inner wall of the hexagonal cap 1 of the valve core body below the valve stem tactile ring 10 has a protrusion structure. The protrusion structure on the inner side of the hexagonal cap 1 of the valve core body is both a limiting block for the ceramic moving plate 4 and a key structure to prevent the valve core sleeve 3 from falling off.

[0033] Specifically, the ceramic moving plate 4, the ceramic stationary plate 6, and the silicone 7 are located inside the valve core sleeve 3, and the valve core sleeve 3 has a water outlet hole and a small hole that matches the stationary plate fixing ring 5 that fixes the ceramic stationary plate 6 on the outside.

[0034] Through the above technical solution, the irregular structure allows the valve core to be installed more tightly. The inverted triangular protrusion on the outer wall of the stationary plate fixing ring 5 allows the ceramic to be fixed inside the valve core sleeve 3, making it less prone to leakage. After the valve is opened, water is discharged from the outlet hole, and the ceramic stationary plate 6 is fixed on the stationary plate fixing ring 5. The stationary plate fixing ring 5 is then fixed to the inner wall of the valve core sleeve 3 by the inverted triangle on its outer wall.

[0035] In use, the valve stem seal does not adopt the traditional structure of machining a groove on the valve stem to fit the sealing ring 8. Instead, the valve stem hole diameter of the valve body is increased, and the sealing ring 8 is directly fitted onto the valve stem. The position of the valve stem is fixed by the hand feel ring 10 and the snap ring 9. With this design, when the depth tolerance of the faucet body is relatively large, the thickness of the silicone 7 can be changed. Within a relatively large size range, the pressure on the ceramic disc can be greatly reduced due to the deformation of the valve stem O-ring.

[0036] 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 split-type valve core, comprising a valve stem body (2), characterized in that: A valve core body hexagonal cap (1) is sleeved on the outside of the valve stem body (2). A retaining ring (9) is provided between the valve stem body (2) and the valve core body hexagonal cap (1). A valve stem sealing ring (8) and a valve stem feel ring (10) are provided in the cavity formed between the valve core body hexagonal cap (1) and the valve stem body (2). A valve body sealing ring (8) is sleeved on the outside of the valve core body hexagonal cap (1). A ceramic moving plate (4) is sleeved on the bottom of the valve stem body (2). A ceramic stationary plate (6) is pressed against the bottom of the ceramic moving plate (4). The bottom of the ceramic stationary plate (6) is fitted with silicone (7), and the ceramic stationary plate (6) is fixed inside the stationary plate fixing ring (5). The stationary plate fixing ring (5) is fixed to the inner wall of the valve core sleeve (3) by an inverted triangle designed on the outer wall. The valve core sleeve (3) is positioned and connected to the upper part of the valve core sleeve (3) by a limiting protrusion designed on the inner wall of the valve core body hexagonal cap (1). The valve core body is positioned and connected to the upper part of the valve core sleeve (3) by a limiting protrusion on the inner wall of the valve core body hexagonal cap (1).

2. The split-type valve core according to claim 1, characterized in that: The valve core body hexagonal cap (1) has a limiting protrusion structure on its inner wall, and the valve core sleeve (3) has a slot positioning structure on its upper part.

3. The split-type valve core according to claim 1, characterized in that: The stationary plate fixing ring (5) is fixed to the inner wall of the valve core sleeve (3) by an inverted triangle designed on the outer wall.

4. The split-type valve core according to claim 1, characterized in that: The ceramic moving plate (4), the ceramic stationary plate (6), and the silicone (7) are located inside the valve core sleeve (3).

5. The split-type valve core according to claim 1, characterized in that: The valve core sleeve (3) has a water outlet hole and a small hole that matches the stationary plate fixing ring (5) of the fixed ceramic stationary plate (6) on the outside.

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