Reversing slide valve controlled by screw shaft
The spiral axis-controlled slide valve addresses the issue of large size and low efficiency in existing designs by synchronizing and directing the movement of multiple valve cores, reducing size and improving operational efficiency.
Patent Information
- Application Number
- CN202421919485.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-09
AI Technical Summary
The independent control of the spool movement of the existing reversing slide valves results in large volume, heavy mass and low operating efficiency.
The reversing slide valve controlled by a spiral shaft is used to cooperate with the spiral teeth to achieve synchronous sliding and direction control of multiple valve cores. The limiting column and the top-rest fit of the spiral teeth are used to reduce wear and optimize the sliding area and direction of the valve core.
Synchronous sliding and direction control of multiple valve cores is realized, which reduces wear and improves operating efficiency and overall structure compactness.
Smart Images
Figure CN223105351U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of control valves, and particularly relates to a reversing slide valve controlled by a spiral shaft. Background Art
[0002] At present, for the existing reversing slide valve, the movement of its spool is basically independently controlled, and a corresponding control device is respectively arranged for each of the multiple built-in spools. As a result, its overall volume and mass are relatively large, and the operation efficiency is also low. Content of the Utility Model
[0003] In order to solve the above problems, the utility model provides a reversing slide valve controlled by a spiral shaft:
[0004] A reversing slide valve controlled by a spiral shaft includes a valve body, a spool and a rotating shaft. The valve body is provided with a shaft cavity and a plurality of valve cavities. Each valve cavity is communicated with a plurality of liquid flow channels. A spool is slidably installed in each valve cavity. The valve cavity is located on one side of the shaft cavity. The rotating shaft is rotatably installed in the valve body. The end of the rotating shaft penetrates into the shaft cavity and forms a spiral shaft by setting spiral teeth. A limiting column penetrating into the shaft cavity is arranged on the side of the spool, and the side of the limiting column can be in abutting fit with the spiral teeth.
[0005] Preferably, the limiting column is rotatably connected to the spool to reduce the abutting wear between the limiting column and the spiral teeth.
[0006] Preferably, the shaft cavity and the valve cavity are communicated through a provided limiting cavity. The limiting column penetrates through the limiting cavity, which can prevent the spool from deflecting and can limit the sliding area of the spool.
[0007] Preferably, multiple spiral shafts with different pitches are arranged at the same end of the rotating shaft, which can simultaneously control the sliding of multiple spools at the same end, and the sliding distances of the spools are different.
[0008] Preferably, both ends of the rotating shaft penetrate into two provided shaft cavities respectively and are respectively provided with spiral shafts to control the sliding of multiple spools at both ends.
[0009] Preferably, the spiral directions of the spiral shafts at both ends of the rotating shaft are opposite, which can simultaneously control the sliding of the spools at both ends, and the sliding directions of the spools at both ends are opposite to each other.
[0010] Preferably, at least two limiting columns are in abutting fit with the spiral shaft, so that one spiral shaft can control the sliding of at least two spools.
[0011] The utility model has the following beneficial effects: By rotating the rotating shaft, the spiral shaft rotates simultaneously. The spiral shaft pushes the limiting column to make the valve core slide to control the commutation position. The number of segments, pitch, and spiral direction of the spiral shaft can be selected and set as needed, enabling the sliding of multiple valve cores to be controlled simultaneously, and the sliding amount and sliding direction of each valve core can be controlled separately. Description of the Drawings
[0012] Figure 1 It is a schematic diagram of the structural principle of Embodiment 1.
[0013] Figure 2 It is a schematic diagram of the structural principle of Embodiment 1.
[0014] 1. Valve body; 2. Valve core; 3. Rotating shaft; 4. Shaft cavity; 5. Valve cavity; 6. Liquid flow channel; 7. Spiral tooth; 8. Spiral shaft; 9. Limiting column; 10. Limiting cavity. Detailed Embodiment
[0015] The following further describes the present utility model in conjunction with Figures 1-2 Embodiments 1 and 2.
[0016] Embodiment 1: A commutation slide valve controlled by a spiral shaft, including a valve body 1, a valve core 2, and a rotating shaft 3. The valve body 1 is provided with a shaft cavity 4 and a plurality of valve cavities 5. Figure 1 Taking two valve cavities 5 as an example, the valve cavities 5 are communicated with a plurality of liquid flow channels 6, and the number can be specifically set according to the commutation needs of the actual connection pipes. Each valve cavity 5 is slidably installed with a valve core 2. The valve cavity 5 is located on one side of the shaft cavity 4. The rotating shaft 3 is rotatably installed on the valve body 1. The end of the rotating shaft 3 penetrates into the shaft cavity 4 and forms a spiral shaft 8 by setting spiral teeth 7. A limiting column 9 penetrating into the shaft cavity 4 is provided on the side of the valve core 2. The side of the limiting column 9 can be in abutting cooperation with the spiral teeth 7. The limiting column 9 is rotatably connected to the valve core 2 to reduce the abutting wear between the limiting column 9 and the spiral teeth 7. The shaft cavity 4 and the valve cavity 5 are communicated through a provided limiting cavity 10. The limiting column 9 penetrates through the limiting cavity 10, which can prevent the valve core 2 from deflecting and can limit the sliding area of the valve core 2; The rotating shaft 3 is provided with a plurality of spiral shafts 8 with different pitches at the same end. In this embodiment, two segments are set as an example, which can control the sliding of two valve cores 2 at the same end simultaneously, and the sliding distances of each valve core 2 are different.
[0017] Working principle: Operate the rotating shaft 3 to rotate so that the two spiral shafts 8 rotate simultaneously. During rotation, as Figure 1 shown, the side of the limiting column 9 is in abutting cooperation with the spiral teeth 7, pushing the limiting column 9 to move the valve core 2 to the left. The commutation is realized by the sliding of the valve core 2. To reverse, the rotating shaft 3 can be rotated in the reverse direction, and the abutting cooperation can occur within one rotation. Similarly, the valve core 2 moves back to realize commutation. Since the pitches of the two spiral shafts 8 are different, the sliding distances of the two valve cores 2 are also different, that is, the sliding of each valve core 2 is operated simultaneously, and the sliding amounts are different.
[0018] Embodiment 2: A reversing spool valve controlled by a spiral shaft, comprising a valve body 1, a spool 2 and a rotating shaft 3. The valve body 1 is provided with a shaft cavity 4 and a plurality of valve cavities 5. Figure 2 Taking two valve cavities 5 as an example, the valve cavities 5 are communicated with a plurality of liquid flow channels 6, and the number can be specifically set according to the reversing requirements of the actual connecting pipelines. Each valve cavity 5 is slidably installed with a spool 2. The valve cavity 5 is located on one side of the shaft cavity 4. The rotating shaft 3 is rotatably installed in the valve body 1. The end of the rotating shaft 3 penetrates into the shaft cavity 4 and forms a spiral shaft 8 by arranging spiral teeth 7. A limiting column 9 penetrating into the shaft cavity 4 is arranged on the side of the spool 2. The side of the limiting column 9 can be in abutting fit with the spiral teeth 7. The limiting column 9 is rotatably connected to the spool 2 to reduce the abutting wear between the limiting column 9 and the spiral teeth 7. The shaft cavity 4 and the valve cavity 5 are communicated through a provided limiting cavity 10. The limiting column 9 penetrates through the limiting cavity 10, which can prevent the spool 2 from deflecting and can limit the sliding area of the spool 2; both ends of the rotating shaft 3 penetrate into two provided shaft cavities 4 respectively and are respectively provided with spiral shafts 8. The spiral directions of the spiral shafts 8 at both ends of the rotating shaft 3 are opposite, which can simultaneously control the sliding of the spools 2 at both ends, and the sliding directions of the spools 2 at both ends are opposite to each other.
[0019] Working principle: Operate the rotating shaft 3 to rotate so that the spiral shafts 8 at both ends rotate simultaneously. During rotation, as Figure 2 shown, the side of the limiting column 9 is in abutting fit with the spiral teeth 7, pushing the limiting column 9 to push both spools 2 outwards. The reversing is realized by the sliding of the spools 2. To reverse, the rotating shaft 3 can be rotated in the reverse direction, and the abutting fit can occur within one week of rotation. Similarly, the spools 2 move back to realize the reversing. Since the spiral directions of the threaded shafts at both ends are opposite, rotating the rotating shaft 3 causes the sliding directions of the two spools 2 to be opposite, that is, the sliding of each spool 2 can be operated simultaneously and the sliding directions are opposite.
[0020] It should be noted that in other embodiments, specific settings can be made according to the usage requirements. For example: arranging at least two limiting columns 9 in abutting fit with the spiral shaft 8 so that one spiral shaft 8 can control the sliding of at least two spools 2; or arranging spiral shafts 8 with different spiral directions at the same end of the rotating shaft 3; or arranging spiral shafts 8 with different pitches at both ends of the rotating shaft 3.
[0021] Obviously, the above-mentioned Embodiments 1 and 2 of the present invention are only examples for explaining the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or variations can be made on the basis of the above description. It is not necessary and impossible to list all the implementation manners here. And these obvious changes or variations derived from the essence of the present invention still belong to the protection scope of the present invention.
Claims
1. A reversing spool valve controlled by a spiral shaft, characterized in that: It includes a valve body (1), a valve core (2) and a rotating shaft (3). The valve body (1) is provided with a shaft cavity (4) and a plurality of valve cavities (5). The valve cavities (5) are communicated with a plurality of liquid flow channels (6). Each of the valve cavities (5) is slidably installed with a valve core (2). The valve cavity (5) is located on one side of the shaft cavity (4). The rotating shaft (3) is rotatably installed in the valve body (1). The end of the rotating shaft (3) penetrates into the shaft cavity (4) and forms a spiral shaft (8) by setting spiral teeth (7). The side of the valve core (2) is provided with a limiting column (9) penetrating into the shaft cavity (4). The side of the limiting column (9) can form a top contact fit with the spiral teeth (7).
2. The reversing spool valve controlled by a spiral shaft according to claim 1, wherein: The limiting column (9) is rotatably connected to the valve core (2).
3. The reversing slide valve controlled by a spiral shaft according to claim 1, characterized in that: The shaft cavity (4) and the valve cavity (5) are communicated through a provided limiting cavity (10). The limiting column (9) penetrates through the limiting cavity (10).
4. The reversing spool valve controlled by a spiral shaft (8) according to claim 1, characterized in that: The rotating shaft (3) is provided with multiple spiral shafts (8) with different pitches at the same end.
5. The reversing spool valve controlled by a spiral shaft according to claim 1, characterized in that: Both ends of the rotating shaft (3) penetrate into two provided shaft cavities (4) respectively and are respectively provided with spiral shafts (8).
6. The reversing spool valve controlled by a spiral shaft according to claim 5, characterized in that: The spiral directions of the spiral shafts (8) at both ends of the rotating shaft (3) are opposite.
7. A reversing slide valve controlled by a spiral shaft according to claim 1, characterized in that: All the spiral shafts (8) are in top contact fit with at least two limiting columns (9).