Split type rotary valve head structure

Abstract

The utility model relates to the technical field of rotary valve heads, in particular to a split type rotary valve head structure which comprises a valve head body, a stator fixing seat and a stator body, a plurality of connecting holes distributed in the circumferential direction are formed in the valve head body, and the connecting holes penetrate through the front face and the rear face of the valve head body. The valve head body is connected with the stator fixing base in an attached mode, and a plurality of pins are arranged on the valve head body. The stator gasket is arranged between the original valve head and the stator, the stator gasket is made of polymer plastic and is softer than the valve head and the stator, so that the planar sealing effect among the valve head, the stator and the stator gasket is better, the stator gasket can counteract the influence caused by the stress period, the good sealing effect is kept, and the service life of the valve head and the stator is prolonged. In addition, due to the arrangement of the stator gasket, the valve head and the stator do not need to be connected in an attached mode, the requirement for machining precision of the stator is slightly lowered, and then the qualified rate of finished stators is increased.

Description

Technical Field

[0001] This utility model relates to the field of rotary valve head technology, specifically a split rotary valve head structure. Background Technology

[0002] Rotary valves are also known by various names in the market, such as rotary valves, distribution valves, and switching valves. Currently, common multi-channel rotary valves generally consist of components such as a drive unit, connecting shaft, support seat, valve body, rotor, stator, and valve head. Due to differences in application scenarios, the materials of the valve head and stator will also vary. Generally speaking, the valve head is mostly made of metal or polymer materials, such as N60 and PEEK, while the stator is mostly made of polymer materials such as PEEK, PTFE, and nylon.

[0003] In special applications, the valve head and stator are made of ceramic. For these hard materials (such as ceramic-ceramic materials), the common sealing method for valve heads and stators is direct surface contact sealing. To achieve a better sealing effect and meet the pressure resistance requirements of the application, the machining precision of the valve head and stator is strictly controlled, resulting in high machining costs. Moreover, the valve head and stator are often fitted with pins, with pins pre-installed on the valve head and pin holes machined on the stator. This increases the size of the stator. Furthermore, during the use of the rotary valve, the valve head and stator are subjected to changes in force load due to pressure increases and decreases. This causes the sealing surface of the valve head and stator to gradually fail due to stress after a period of use, posing a risk of leakage on the sealing surface, which greatly affects the service life of the product.

[0004] Therefore, we propose a split-type rotary valve head structure. Utility Model Content

[0005] One of the technical problems this application aims to solve is that the existing valve head and stator adopt direct contact sealing, which makes the machining accuracy of the valve head and stator more strictly controlled and the machining cost higher. In addition, the valve head and stator are subjected to force load changes caused by pressure increase and decrease, which causes the sealing surface of the valve head and stator to gradually fail due to stress, and there is a risk of leakage on the sealing surface.

[0006] To address the aforementioned technical problems, this application provides a split-type rotary valve head structure, comprising a valve head body, a stator fixing seat, and a stator body. The valve head body has multiple connecting holes distributed circumferentially, penetrating both the front and rear surfaces. The valve head body and the stator fixing seat are fitted together. Multiple pins are provided on the valve head body, and the stator fixing seat has secondary through holes adapted to the pins. The stator body is inserted into a space reserved in the middle of the stator fixing seat. The structure also includes a stator gasket, with both sides tightly fitted to the valve head body and the stator body. The stator body has insertion grooves and insertion holes, communicating with each other. A secondary sealing plate is provided on the stator gasket, and insertion rings and blocks adapted to the insertion grooves and insertion holes are provided on the edges of the secondary sealing plate.

[0007] In some embodiments, a sleeve ring adapted to the outer wall of the valve hole on the valve head body is provided on the stator gasket, and the sleeve ring is sleeved on the outer wall of the valve hole on the valve head body.

[0008] In some embodiments, a sealing portion is provided on the valve head body, the sealing portion including a positioning groove and a sealing groove that communicate with each other, and a first sealing plate and a positioning piece adapted to the positioning groove and the sealing groove are respectively provided on the sleeve ring.

[0009] In some embodiments, a plurality of through holes No. 1 are provided on the outer ring of the stator fixing base, and the plurality of through holes No. 1 correspond one-to-one with the connecting holes.

[0010] In some embodiments, a plurality of No. 3 through holes are provided on the inner ring of the stator fixing seat, and a plurality of mounting holes are provided on the side of the valve head body facing the stator fixing seat, wherein the mounting holes correspond one-to-one with the No. 3 through holes.

[0011] In some embodiments, the stator gasket, the second sealing plate, the plug ring, and the plug block are made of integrally molded plastic material.

[0012] In some embodiments, the stator mounting base has a plurality of straight grooves on its edge.

[0013] In some embodiments, the sealing portion includes a sealing groove and a plurality of positioning grooves that are connected to the sealing groove, wherein the plurality of positioning grooves are symmetrically distributed in pairs.

[0014] This utility model has at least the following beneficial effects:

[0015] 1. By installing a stator gasket between the original valve head and stator, the stator gasket is made of polymer plastic, which is softer than the valve head and stator materials. This ensures a better planar sealing effect between the valve head, stator, and stator gasket. The stator gasket can offset the effects of stress cycles, maintain a good sealing effect, and improve the service life of the rotary valve components. Furthermore, the installation of the stator gasket eliminates the need for a close fit between the valve head and stator, thus slightly reducing the machining accuracy requirements of the stator and improving the finished product qualification rate of the stator. It is highly practical.

[0016] 2. The design of the No. 1 sealing plate, positioning plate, plug ring, and plug block facilitates assembly by the workers, enabling quick positioning and assembly of the stator gasket, valve head, and stator, thus simplifying assembly and making it easier to use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 for Figure 1 Axonometric three-dimensional structural schematic diagram;

[0019] Figure 3 This is a schematic diagram of the exploded three-dimensional structure of this utility model;

[0020] Figure 4 for Figure 3 A schematic diagram of the structure of the stator gasket and the stator;

[0021] Figure 5 for Figure 4 Axonometric three-dimensional structural schematic diagram;

[0022] Figure 6 This is a structural schematic diagram of Embodiment 2 of the present invention.

[0023] In the diagram: 1. Valve head body; 2. Connecting hole; 3. Stator fixing seat; 4. Stator body; 5. Through hole No. 1; 6. Through hole No. 2; 7. Pin; 8. Straight groove; 9. Through hole No. 3; 10. Sealing part; 11. Positioning groove; 12. Sealing groove; 13. Stator gasket; 14. Sealing plate No. 1; 15. Sealing plate No. 2; 16. Positioning piece; 17. Mounting hole; 18. Sleeve ring; 19. Insertion ring; 20. Insertion block; 21. Insertion groove; 22. Insertion hole. Detailed Implementation

[0024] 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.

[0025] Example 1:

[0026] Please see Figures 1-5 The technical solution provided by this utility model is as follows: A split rotary valve head structure includes a valve head body 1, a stator fixing seat 3, and a stator body 4. Multiple connecting holes 2 distributed circumferentially are provided on the valve head body 1, penetrating both the front and rear surfaces of the valve head body 1. The valve head body 1 and the stator fixing seat 3 are fitted together. Multiple pins 7 are provided on the valve head body 1, and second through holes 6, each adapted to a pin 7, are provided on the stator fixing seat 3. The stator body 4 is inserted into a space reserved in the middle of the stator fixing seat 3. It also includes a stator gasket 13, with both sides of the stator gasket 13 tightly fitted to the valve head body 1 and the stator body 4, respectively. The stator gasket 13 is provided with a slot 21 and a hole 22, which are connected to each other. A second sealing plate 15 is provided on the stator gasket 13. A plug ring 19 and a plug block 20 are provided on the edge of the second sealing plate 15, which are adapted to the slot 21 and the hole 22, respectively. During installation, the second sealing plate 15 is tightly fitted to the stator body 4, the plug ring 19 is embedded in the slot 21, and the plug block 20 is embedded in the hole 22, thereby improving the tightness of the fit between the stator gasket 13 and the stator body 4. The plug block 20 and the plug hole 22 help the workers to assemble and quickly position the stator gasket 13, thus improving its practicality.

[0027] The stator gasket 13, the second sealing plate 15, the plug ring 19, and the plug block 20 are all integrally molded plastic materials. The stator gasket 13 is made of polymer plastic, which is softer than the valve head body 1 and the stator body 4, thus ensuring a better planar sealing effect between the valve head body 1, the stator body 4 and the stator gasket 13. The stator gasket 13 can offset the effects of stress cycles, maintain a good sealing effect, and improve the service life of the rotary valve components.

[0028] In this embodiment, if Figure 3 and Figure 4As shown, a sleeve ring 18 adapted to the outer wall of the valve hole on the valve head body 1 is provided on the stator gasket 13. The sleeve ring 18 is sleeved on the outer wall of the valve hole on the valve head body 1. A sealing part 10 is provided on the valve head body 1. The sealing part 10 includes a positioning groove 11 and a sealing groove 12 that are interconnected. A first sealing plate 14 and a positioning piece 16 adapted to the positioning groove 11 and the sealing groove 12 are provided on the sleeve ring 18. During installation, the sleeve ring 18 is sleeved on the outer wall of the valve hole on the valve head body 1, the first sealing plate 14 is embedded in the sealing groove 12, and the positioning piece 16 is embedded in the positioning groove 11, thereby improving the tightness of the fit between the stator gasket 13 and the valve head body 1. The positioning piece 16 and the positioning groove 11 help the workers to assemble and quickly position the stator gasket 13, thus improving its practicality.

[0029] In this embodiment, as Figure 2 and Figure 3 As shown, multiple through holes 5 are provided on the outer ring of the stator fixing seat 3, and each of the multiple through holes 5 corresponds to a connecting hole 2. Multiple through holes 9 are provided on the inner ring of the stator fixing seat 3. Multiple mounting holes 17 are provided on the side of the valve head body 1 facing the stator fixing seat 3, and each of the mounting holes 17 corresponds to a through hole 9. These are all preset holes used to fix the valve head body 1 and the stator fixing seat 3, and to fix the stator fixing seat 3 to the support mechanism in the rotary valve.

[0030] In this embodiment, as Figure 2 and Figure 3 As shown, the stator mounting base 3 has multiple straight grooves 8 on its side. The straight grooves 8 facilitate the subsequent disassembly of the stator mounting base 3, making it easy to separate the stator mounting base 3 from the valve head body 1 and facilitating maintenance.

[0031] The implementation principle of the split rotary valve head structure in this application embodiment is as follows: During installation, the second sealing plate 15 is tightly fitted with the stator body 4, the insertion ring 19 is embedded in the insertion groove 21, and the insertion block 20 is embedded in the insertion hole 22, thereby improving the tightness of the fit between the stator gasket 13 and the stator body 4. The setting of the insertion block 20 and the insertion hole 22 helps the workers to assemble and quickly position the stator gasket 13, thus improving its practicality.

[0032] The stator gasket 13, the second sealing plate 15, the plug ring 19, and the plug block 20 are all integrally molded plastic materials. The stator gasket 13 is made of polymer plastic, which is softer than the valve head body 1 and the stator body 4, thus ensuring a better planar sealing effect between the valve head body 1, the stator body 4 and the stator gasket 13. The stator gasket 13 can offset the effects of stress cycles, maintain a good sealing effect, and improve the service life of the rotary valve components.

[0033] During installation, the sleeve ring 18 is fitted onto the outer wall of the valve hole of the valve head body 1, the first sealing plate 14 is embedded in the sealing groove 12, and the positioning piece 16 is embedded in the positioning groove 11, thereby improving the tight fit between the stator gasket 13 and the valve head body 1. The positioning piece 16 and the positioning groove 11 help the workers to assemble and quickly position the stator gasket 13, thus improving its practicality.

[0034] Example 2:

[0035] Please see Figure 6 The technical solution provided by this utility model is as follows:

[0036] Unlike Embodiment 1, the sealing part 10 includes a sealing groove 12 and a plurality of positioning grooves 11 that are connected to the sealing groove 12. The plurality of positioning grooves 11 are symmetrically distributed in pairs. Each of the plurality of positioning grooves 11 can be embedded by a positioning piece 16. This arrangement increases the selectivity and allows the stator gasket 13 to be quickly installed when assembling the stator gasket 13 and the valve head body 1. Compared with a single positioning groove 11, this arrangement eliminates the need for workers to rotate and reposition the stator gasket 13, thus improving practicality.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present 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 present invention.

Claims

1. A split-type rotary valve head structure, comprising a valve head body (1), a stator fixing seat (3), and a stator body (4), characterized in that: A plurality of connecting holes (2) are provided on the valve head body (1) in a circumferential direction, and the connecting holes (2) penetrate the front and rear sides of the valve head body (1); The valve head body (1) and the stator fixing seat (3) are fitted together. A plurality of pins (7) are provided on the valve head body (1), and a second through hole (6) adapted to the pins (7) is provided on the stator fixing seat (3). The stator body (4) is inserted into the space reserved in the middle of the stator fixing seat (3); It also includes a stator gasket (13), the two sides of which are tightly fitted to the valve head body (1) and the stator body (4) respectively. A plug-in groove (21) and a plug-in hole (22) are respectively provided on the stator body (4). The plug-in groove (21) is connected to the plug-in hole (22). A second sealing plate (15) is provided on the stator gasket (13). A plug-in ring (19) and a plug-in block (20) adapted to the plug-in groove (21) and the plug-in hole (22) are respectively provided on the edge of the second sealing plate (15).

2. The split rotary valve head structure according to claim 1, characterized in that: A sleeve ring (18) adapted to the outer wall of the valve hole on the valve head body (1) is provided on the stator gasket (13), and the sleeve ring (18) is sleeved on the outer wall of the valve hole on the valve head body (1).

3. The split rotary valve head structure according to claim 2, characterized in that: A sealing part (10) is provided on the valve head body (1). The sealing part (10) includes a positioning groove (11) and a sealing groove (12) that are interconnected. A first sealing plate (14) and a positioning piece (16) that are adapted to the positioning groove (11) and the sealing groove (12) are respectively provided on the sleeve ring (18).

4. The split rotary valve head structure according to claim 1, characterized in that: Multiple through holes (5) are provided on the outer ring of the stator fixing seat (3), and the multiple through holes (5) correspond one-to-one with the connecting holes (2).

5. The split rotary valve head structure according to claim 4, characterized in that: Multiple No. 3 through holes (9) are provided on the inner ring of the stator fixing seat (3), and multiple mounting holes (17) are provided on the side of the valve head body (1) facing the stator fixing seat (3). The mounting holes (17) correspond one-to-one with the No. 3 through holes (9).

6. The split rotary valve head structure according to claim 1, characterized in that: The stator gasket (13), the second sealing plate (15), the plug ring (19), and the plug block (20) are all integrally molded plastic materials.

7. The split rotary valve head structure according to claim 1, characterized in that: The stator fixing seat (3) has multiple straight grooves (8) on its side.

8. The split rotary valve head structure according to claim 3, characterized in that: The sealing part (10) includes a sealing groove (12) and a plurality of positioning grooves (11) that are connected to the sealing groove (12), and the plurality of positioning grooves (11) are symmetrically distributed in pairs.

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