阅读说明：本技术 一种偏心补偿阀 (Eccentric compensation valve ) 是由 贾菁 于 2021-03-17 设计创作，主要内容包括：一种偏心补偿阀,阀芯包括中隔板、上挡板和下挡板,中隔板处于上挡板和下挡板之间的偏心位置；上挡板的上侧连接有上出轴,下挡板的下侧连接有下出轴,上出轴和下出轴径向方向设有侧推置位件；上出轴设有上轴承,下出轴设有下轴承,上轴承和下轴承均位于侧推置位件的外侧,侧推置位件使阀芯几何圆心与阀芯的转动圆心产生偏心；上轴承的外侧设有上轴承盖,上轴承盖的外壁与阀体的内壁配合；下轴承的外侧设有下轴承盖,下轴承盖的外壁与阀体的内壁配合；上出轴连接有驱动轴,驱动轴伸出于上盖体。本发明侧推置位件能够对阀芯进行了预偏置密封,并改变阀芯形状,大大减少了内泄露量,并减少了流体阻力,增强了阀在压差和温差下运行的可靠性。(An eccentric compensation valve, a valve core comprises a middle clapboard, an upper baffle and a lower baffle, wherein the middle clapboard is positioned at an eccentric position between the upper baffle and the lower baffle; the upper side of the upper baffle is connected with an upper output shaft, the lower side of the lower baffle is connected with a lower output shaft, and side pushing positioning pieces are arranged in the radial directions of the upper output shaft and the lower output shaft; the upper output shaft is provided with an upper bearing, the lower output shaft is provided with a lower bearing, the upper bearing and the lower bearing are both positioned at the outer side of the side pushing position part, and the side pushing position part enables the geometric circle center of the valve core and the rotating circle center of the valve core to generate eccentricity; an upper bearing cover is arranged on the outer side of the upper bearing, and the outer wall of the upper bearing cover is matched with the inner wall of the valve body; a lower bearing cover is arranged on the outer side of the lower bearing, and the outer wall of the lower bearing cover is matched with the inner wall of the valve body; the upper output shaft is connected with a driving shaft which extends out of the upper cover body. The side pushing part can perform pre-bias sealing on the valve core, change the shape of the valve core, greatly reduce the internal leakage, reduce the fluid resistance and enhance the reliability of the valve in operation under the pressure difference and the temperature difference.)

1. An eccentric compensation valve comprises a valve body (1), wherein the upper end of the valve body (1) is connected with an upper cover body (2), the lower end of the valve body (1) is connected with a lower cover body (3), the side wall of the valve body (1) is provided with a plurality of channels, and a valve core (4) is arranged inside the valve body (1); the valve core (4) is characterized by comprising a middle partition plate (5), an upper baffle plate (6) and a lower baffle plate (7), wherein the middle partition plate (5) is positioned at an eccentric position between the upper baffle plate (6) and the lower baffle plate (7);

an upper output shaft (8) is connected to the upper side of the upper baffle (6), a lower output shaft (9) is connected to the lower side of the lower baffle (7), and side pushing positioning pieces (10) are arranged in the radial directions of the upper output shaft (8) and the lower output shaft (9); the upper output shaft (8) is provided with an upper bearing (11), the lower output shaft (9) is provided with a lower bearing (12), the upper bearing (11) and the lower bearing (12) are both positioned at the outer side of the side pushing and positioning piece (10), and the side pushing and positioning piece (10) enables the geometric circle center of the valve core (4) and the rotating circle center of the valve core (4) to generate eccentricity;

an upper bearing cover (13) is arranged on the outer side of the upper bearing (11), and the outer wall of the upper bearing cover (13) is matched with the inner wall of the valve body (1); a lower bearing cover (14) is arranged on the outer side of the lower bearing (12), and the outer wall of the lower bearing cover (14) is matched with the inner wall of the valve body (1); the upper output shaft (8) is connected with a driving shaft (15).

2. An eccentric compensating valve according to claim 1, said upper bearing (11) and lower bearing (12) being one of self-centering conical bearings, angular contact bearings, conical sliding bearings or conical rolling bearings.

3. An eccentric compensation valve according to claim 1, characterized in that the driving shaft (15) passes through the top of the upper bearing cap (13), and a transmission thread for jacking and pressing is arranged between the driving shaft (15) and the upper bearing cap (13);

a driving hole (16) is formed at the top of the upper output shaft (8), and the tail end of the driving shaft (15) is positioned in the driving hole (16);

a friction piece (17) is arranged inside the driving hole (16), and the friction piece (17) is contacted with the tail end of the driving shaft (15);

an anti-rotation pin (18) is arranged between the upper bearing cover (13) and the upper cover body (2);

and a compression spring (19) is arranged between the friction piece (17) and the bottom of the driving hole (16).

4. An eccentric compensation valve according to claim 1, characterized in that an inner pressing sleeve (20) is arranged between the upper bearing cover (13) and the upper cover body (2), the driving shaft (15) passes through the center of the inner pressing sleeve (20), and the driving shaft (15) drives the inner pressing sleeve (20) to rotate; an outer pressing sleeve (21) is arranged on the periphery of the inner pressing sleeve (20), and the inner pressing sleeve (20) is in threaded fit with the outer pressing sleeve (21);

an anti-rotation pin (18) is arranged between the upper bearing cover (13) and the upper cover body (2), and the anti-rotation pin (18) penetrates through the outer pressing sleeve (21).

5. An eccentric compensation valve according to claim 4, characterized in that the top of the upper output shaft (8) is formed with a driving hole (16), the end of the driving shaft (15) being in the driving hole (16);

the driving shaft (15) is provided with a ring groove (22) at the opening position of the driving hole (16), and the top wall of the driving hole (16) is arranged in the ring groove (22);

and a compression spring (19) is arranged between the lower end of the driving shaft (15) and the bottom of the driving hole (16), and the compression spring (19) is also arranged in the annular groove (22).

6. An eccentric compensating valve according to claim 1, characterized in that the intermediate partition (5) is one of flat, U-shaped, C-shaped, elbow-shaped, arc-shaped or cambered.

7. An eccentric compensation valve according to claim 1, characterized in that the upper baffle (6) and the lower baffle (7) are both semicircular, the central angle of the upper baffle (6) and the lower baffle (7) being less than or equal to 180 °.

Technical Field

The invention belongs to the technical field of valves, and particularly relates to an eccentric compensation valve.

Background

At present, the valve is worn inevitably in the application process, and after the valve is worn in long-term use, if the valve is not compensated, the leakage is increased.

For example, in the field of air conditioner valves, if the valves leak, the refrigerant will leak, causing environmental pollution, in the field of ball valves, because the adopted spherical valve core, the contact area of the connecting position of the driving rod and the valve core is small, the strength is low, the service life is short, and the valve is easy to damage. Moreover, in some flammable and explosive places and in use environments for preventing pollution, the valve and actuator solution cannot meet the requirement of high reliability. A technical solution for effectively preventing leakage is urgently needed, and the inventor develops a series of technical solutions for the technical solution.

Disclosure of Invention

Therefore, the invention provides an eccentric compensation valve, which solves the problems that the existing valve is poor in closing reliability and easy to leak after being worn.

In order to achieve the above purpose, the invention provides the following technical scheme: an eccentric compensation valve comprises a valve body, wherein the upper end of the valve body is connected with an upper cover body, the lower end of the valve body is connected with a lower cover body, the side wall of the valve body is provided with a plurality of channels, and a valve core is arranged inside the valve body; the valve core comprises a middle clapboard, an upper baffle and a lower baffle, and the middle clapboard is positioned at an eccentric position between the upper baffle and the lower baffle;

the upper side of the upper baffle is connected with an upper output shaft, the lower side of the lower baffle is connected with a lower output shaft, and side pushing positioning pieces are arranged in the radial directions of the upper output shaft and the lower output shaft; the upper output shaft is provided with an upper bearing, the lower output shaft is provided with a lower bearing, the upper bearing and the lower bearing are both positioned on the outer side of the side pushing and positioning piece, and the side pushing and positioning piece enables the geometric circle center of the valve core and the rotating circle center of the valve core to generate eccentricity;

an upper bearing cover is arranged on the outer side of the upper bearing, and the outer wall of the upper bearing cover is matched with the inner wall of the valve body; a lower bearing cover is arranged on the outer side of the lower bearing, and the outer wall of the lower bearing cover is matched with the inner wall of the valve body; the upper output shaft is connected with a driving shaft.

Preferably, the upper bearing and the lower bearing are one of a self-centering conical bearing and an angular contact bearing, and the conical bearing is a conical sliding bearing or a conical rolling bearing.

As a preferable scheme of the eccentric compensation valve, the driving shaft penetrates through the top of the upper bearing cover, and a transmission thread for jacking and pressing is arranged between the driving shaft and the upper bearing cover;

the top of the upper output shaft is provided with a driving hole, and the tail end of the driving shaft is positioned in the driving hole.

As a preferable scheme of the eccentric compensation valve, a friction member is arranged inside the driving hole, and the friction member is contacted with the tail end of the driving shaft;

and an anti-rotation pin is arranged between the upper bearing cover and the upper cover body.

Preferably, a compression spring is arranged between the friction piece and the bottom of the driving hole.

As a preferable scheme of the eccentric compensation valve, an inner pressure sleeve is arranged between the upper bearing cover and the upper cover body, the driving shaft penetrates through the center of the inner pressure sleeve, and the driving shaft drives the inner pressure sleeve to rotate; the periphery of the inner pressing sleeve is provided with an outer pressing sleeve, and the inner pressing sleeve is in threaded fit with the outer pressing sleeve.

As a preferable scheme of the eccentric compensation valve, a driving hole is formed at the top of the upper output shaft, and the tail end of the driving shaft is positioned in the driving hole;

the driving shaft is provided with a ring groove at the opening position of the driving hole, and the top wall of the driving hole is arranged in the ring groove.

As a preferable scheme of the eccentric compensation valve, a compression spring is arranged between the lower end of the driving shaft and the bottom of the driving hole, and the compression spring is also arranged in the annular groove.

As a preferable scheme of the eccentric compensation valve, an anti-rotation pin is arranged between the upper bearing cover and the upper cover body and penetrates through the outer pressing sleeve.

Preferably, the center spacer is one of a flat plate, a U-shape, a C-shape, an elbow shape, an arc shape, and an arcuate fluid curved surface shape.

As a preferable scheme of the eccentric compensation valve, the upper baffle and the lower baffle are both semicircular, and the central angle of the upper baffle and the lower baffle is less than or equal to 180 degrees.

The invention is provided with a valve body, the upper end of the valve body is connected with an upper cover body, the lower end of the valve body is connected with a lower cover body, the side wall of the valve body is provided with a plurality of channels, and a valve core is arranged inside the valve body; the valve core comprises a middle clapboard, an upper baffle and a lower baffle, and the middle clapboard is positioned at the eccentric position between the upper baffle and the lower baffle; the upper side of the upper baffle is connected with an upper output shaft, the lower side of the lower baffle is connected with a lower output shaft, and side pushing positioning pieces are arranged in the radial directions of the upper output shaft and the lower output shaft; the upper output shaft is provided with an upper bearing, the lower output shaft is provided with a lower bearing, the upper bearing and the lower bearing are both positioned at the outer side of the side pushing position part, and the side pushing position part enables the geometric circle center of the valve core and the rotating circle center of the valve core to generate eccentricity; an upper bearing cover is arranged on the outer side of the upper bearing, and the outer wall of the upper bearing cover is matched with the inner wall of the valve body; a lower bearing cover is arranged on the outer side of the lower bearing, and the outer wall of the lower bearing cover is matched with the inner wall of the valve body; the upper output shaft is connected with a driving shaft which extends out of the upper cover body. The side pushing position piece is arranged, the side pushing position piece can perform pre-bias sealing on the valve core, the shape of the valve core is changed, maintenance sealing elements are added, the internal leakage amount is greatly reduced, the fluid resistance is reduced, the reliability of the valve in operation under the pressure difference and the temperature difference is enhanced, and the service life of the valve is greatly prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

Fig. 1 is a schematic view of an eccentric compensating valve provided in embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of a valve core of an eccentric compensation valve provided in embodiment 1 of the present invention;

FIG. 3 is a schematic view of the structure of an eccentricity compensation valve provided in embodiment 2 of the present invention;

fig. 4 is a schematic view of a deformed structure of an eccentric compensating valve provided in embodiment 2 of the present invention;

FIG. 5 is a schematic view of the structure of an eccentricity compensation valve provided in embodiment 3 of the present invention;

FIG. 6 is a schematic diagram of the cooperation of the outer pressure sleeve and the inner pressure sleeve of the eccentric compensation valve provided in embodiment 3 of the present invention;

fig. 7 is a schematic view of the passage of the eccentricity compensation valve provided in embodiment 3 of the present invention.

In the figure, 1, a valve body; 2. an upper cover body; 3. a lower cover body; 4. a valve core; 5. a middle partition plate; 6. an upper baffle plate; 7. a lower baffle plate; 8. upward shaft output; 9. a lower shaft is output; 10. a side pushing position piece; 11. an upper bearing; 12. a lower bearing; 13. an upper bearing cap; 14. a lower bearing cap; 15. a drive shaft; 16. a drive aperture; 17. a friction member; 18. an anti-rotation pin; 19. a compression spring; 20. an inner pressing sleeve; 21. externally pressing the sleeve; 22. and a ring groove.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1 and 2, an eccentric compensation valve is provided, which comprises a valve body 1, wherein the upper end of the valve body 1 is connected with an upper cover body 2, the lower end of the valve body 1 is connected with a lower cover body 3, the side wall of the valve body 1 is provided with a plurality of channels, and a valve core 4 is arranged inside the valve body 1; the valve core 4 comprises a middle clapboard 5, an upper baffle 6 and a lower baffle 7, and the middle clapboard 5 is positioned at an eccentric position between the upper baffle 6 and the lower baffle 7;

an upper output shaft 8 is connected to the upper side of the upper baffle 6, a lower output shaft 9 is connected to the lower side of the lower baffle 7, and side pushing positioning pieces 10 are arranged in the radial directions of the upper output shaft 8 and the lower output shaft 9; the upper output shaft 8 is provided with an upper bearing 11, the lower output shaft 9 is provided with a lower bearing 12, the upper bearing 11 and the lower bearing 12 are both positioned at the outer side of the side pushing part 10, and the side pushing part 10 enables the geometric circle center of the valve core 4 and the rotating circle center of the valve core 4 to generate eccentricity;

an upper bearing cover 13 is arranged on the outer side of the upper bearing 11, and the outer wall of the upper bearing cover 13 is matched with the inner wall of the valve body 1; a lower bearing cover 14 is arranged on the outer side of the lower bearing 12, and the outer wall of the lower bearing cover 14 is matched with the inner wall of the valve body 1; the upper output shaft 8 is connected with a driving shaft 15.

In this embodiment, the middle partition plate 5 is one of a flat plate, an arc, and a curved fluid surface. The upper baffle 6 and the lower baffle 7 are both semicircular, and the central angle of the upper baffle 6 and the central angle of the lower baffle 7 are less than or equal to 180 degrees.

In this embodiment, the upper output shaft 8 and the lower output shaft 9 are provided with side pushing position parts 10 in the radial direction, the side pushing position parts 10 are in any shape, and can be elastic or inelastic, and are combined with other parts to form elastic parts, the side pushing position parts 10 enable the geometric circle center of the valve core 4 and the rotation circle center of the valve core 4 to be in an eccentric state, and the side pushing position parts 10, the upper output shaft 8 and the lower output shaft 9 are combined into a whole.

Specifically, the upper cover body 2 has a hole in the middle, the driving shaft 15 is led out from the hole, and a sealing member can be arranged between the driving shaft 15 and the upper cover body 2. The upper bearing 11 and the lower bearing 12 are tapered roller bearings. Springs are arranged between the outer ring of the upper bearing 11 and the upper cover body 2 and between the lower bearing cover 14 and the valve body 1, and disc springs are preferred.

When the valve body works normally, fluid flows into the valve body 1 from the right end, and the outer ring of the upper bearing 11 is under the action of the spring under the action of the side pushing component 10 of the valve core 4, so that the valve core 4 is pushed to the right end to be tightly attached to the inner wall of the valve body 1, and the closed fluid flows to the left end from the right end to prevent the fluid from flowing. Since the driving shaft 15 rotates to drive the valve core 4 to rotate, the sealing surface of the valve core 4 rotates away from the right flow passage, and the fluid flows through the valve core 4 and flows to the left end. If the valve core 4 is worn, the spring can continuously downwards move the outer ring of the upper bearing 11, and the valve core 4 is pushed to the inner wall of the valve body 1 to be sealed under the action of the conical surface, so that the wear is automatically compensated.

The invention is provided with a valve body 1, the upper end of the valve body 1 is connected with an upper cover body 2, the lower end of the valve body 1 is connected with a lower cover body 3, the side wall of the valve body 1 is provided with a plurality of channels, and the interior of the valve body 1 is provided with a valve core 4; the valve core 4 comprises a middle clapboard 5, an upper baffle 6 and a lower baffle 7, and the middle clapboard 5 is positioned at the eccentric position between the upper baffle 6 and the lower baffle 7; an upper output shaft 8 is connected to the upper side of the upper baffle 6, a lower output shaft 9 is connected to the lower side of the lower baffle 7, and a side pushing position piece 10 is arranged in the radial direction of the upper output shaft 8 and the lower output shaft 9; the upper output shaft 8 is provided with an upper bearing 11, the lower output shaft 9 is provided with a lower bearing 12, the upper bearing 11 and the lower bearing 12 are both positioned at the outer side of the side pushing and positioning part 10, and the side pushing and positioning part 10 enables the geometric circle center of the valve core 4 and the rotating circle center of the valve core 4 to generate eccentricity; an upper bearing cover 13 is arranged on the outer side of the upper bearing 11, and the outer wall of the upper bearing cover 13 is matched with the inner wall of the valve body 1; a lower bearing cover 14 is arranged on the outer side of the lower bearing 12, and the outer wall of the lower bearing cover 14 is matched with the inner wall of the valve body 1; the upper output shaft 8 is connected with a driving shaft 15, and the driving shaft 15 extends out of the upper cover body 2. The invention is provided with the side pushing position part 10, the side pushing position part 10 can carry out pre-bias sealing on the valve core 4, change the shape of the valve core 4, increase the maintenance sealing part, greatly reduce the internal leakage amount, reduce the fluid resistance, enhance the reliability of the valve in operation under the pressure difference and the temperature difference and greatly improve the service life of the valve.

Example 2

Referring to fig. 3, an eccentric compensation valve is provided, on the basis of embodiment 1, a driving shaft 15 penetrates through the top of the upper bearing cover 13, and a transmission thread for jacking and pressing is arranged between the driving shaft 15 and the upper bearing cover 13; the top of the upper output shaft 8 is formed with a driving hole 16, and the end of the driving shaft 15 is located in the driving hole 16. Meanwhile, a friction member 17 is arranged inside the driving hole 16, and the friction member 17 is in contact with the tail end of the driving shaft 15; an anti-rotation pin 18 is arranged between the upper bearing cover 13 and the upper cover body 2. A compression spring 19 is arranged between the friction piece 17 and the bottom of the driving hole 16.

In this embodiment, the driving shaft 15 has an external thread, the upper bearing cap 13 has an internal thread at the matching part with the driving shaft 15, and the joint of the upper output shaft 8 of the valve core 4 and the driving shaft 15 is provided with a friction piece 17 and a compression spring 19.

Specifically, the friction member 17 is made of a friction-resistant material, such as a non-asbestos friction material used for brake pads.

When the driving shaft 15 rotates clockwise, the upper bearing cover 13 moves up under the driving of the screw thread, the valve core 4 is separated from the inner wall of the valve body 1, the driving shaft 15 rubs with the friction piece 17, the valve core 4 is driven to rotate, and the left channel and the right channel are communicated. When the driving shaft 15 rotates reversely, the driving shaft 15 and the friction piece 17 still have a friction relationship under the action of the pressing spring 19, the driving shaft 15 drives the valve core 4 to rotate reversely, and after the valve core 4 rotates in place, the thread of the driving shaft 15 and the thread of the upper bearing cover 13 act to press the upper bearing 11, so that the valve core 4 and the valve body 1 are pressed and sealed.

Referring to fig. 4, the solution according to embodiment 2 can also be implemented by directly using the friction member 17 instead of using the compression spring 19, which also achieves the object of the invention. Or a thread locking mode is adopted, and the friction piece 17 and the pressing spring 19 are eliminated.

Example 3

Referring to fig. 5, 6 and 7, an eccentricity compensation valve is provided, on the basis of embodiment 1, an internal pressure sleeve 20 is arranged between an upper bearing cover 13 and an upper cover body 2, and a driving shaft 15 penetrates through the center of the internal pressure sleeve 20; the periphery of the inner pressure sleeve 20 is provided with an outer pressure sleeve 21, and the inner pressure sleeve 20 is in threaded fit with the outer pressure sleeve 21. A driving hole 16 is formed at the top of the upper output shaft 8, and the end of the driving shaft 15 is positioned in the driving hole 16; the driving shaft 15 is provided with a ring groove 22 at the opening position of the driving hole 16, and the top wall of the driving hole 16 is placed in the ring groove 22. A compression spring 19 is arranged between the lower end of the driving shaft 15 and the bottom of the driving hole 16, and the compression spring 19 is also arranged in the annular groove 22. An anti-rotation pin 18 is arranged between the upper bearing cover 13 and the upper cover body 2, and the anti-rotation pin 18 penetrates through the outer pressing sleeve 21.

In this embodiment, the valve body 1 is connected with three channels, a compressing assembly is arranged above the upper bearing cover 13, the compressing assembly comprises an anti-rotation pin 18, an outer pressing sleeve 21 and an inner pressing sleeve 20, the anti-rotation pin 18 penetrates through the outer pressing sleeve 21, the inner pressing sleeve 20 is arranged on the inner side of the outer pressing sleeve 21, the outer pressing sleeve 21 is provided with an internal thread, the inner pressing sleeve 20 is provided with an external thread matched with the internal thread, a square hole is arranged in the middle of the inner pressing sleeve 20, and the position matched with the driving shaft 15 is also square.

Specifically, in the initial state, the outer pressing sleeve 21 is pressed and contacted with the lower part of the upper cover body 2, the inner pressing sleeve 20 is pressed and contacted with the upper part of the upper bearing cover 13, and the passage AB is communicated. When the driving shaft 15 rotates clockwise, the inner pressure sleeve 20 is driven to rotate clockwise, because the outer pressure sleeve 21 does not rotate, the inner pressure sleeve 20 moves from bottom to top at the moment, the inner pressure sleeve is slowly screwed into the outer pressure sleeve 21, the upper bearing cover 13 moves upwards, because friction exists between the valve core 4 and the driving shaft 15, the valve core 4 rotates under the action of the driving shaft 15, when the valve core 4 rotates to a preset position, the valve core 4 stops rotating, if the driving shaft 15 continues to rotate, the inner pressure sleeve 20 continues to move upwards, the outer pressure sleeve 21 moves downwards until the inner pressure sleeve 20 and the upper cover body 2 touch and compress, the outer pressure sleeve 21 and the upper bearing cover 13 touch and compress, the valve core 4 rotates to the position, and the channel BC is communicated.

When the driving shaft 15 rotates anticlockwise in the opposite direction, the inner pressure sleeve 20 is driven to rotate anticlockwise, because the outer pressure sleeve 21 does not rotate, the inner pressure sleeve 20 moves from top to bottom and is slowly screwed into the outer pressure sleeve 21, at the moment, the upper bearing cover 13 moves upwards, because of friction between the valve core 4 and the driving shaft 15, the valve core 4 rotates under the action of the driving shaft 15, when the valve core 4 rotates to a preset position, the valve core 4 stops rotating, if the driving shaft 15 continues to rotate, the inner pressure sleeve 20 continues to move downwards, the outer pressure sleeve 21 moves upwards until the inner pressure sleeve 20 and the upper bearing cover 13 touch and compress, the outer pressure sleeve 21 and the upper cover body 2 touch and compress, the valve core 4 rotates in place, and the channel AB is communicated.

Example 4

Based on embodiment 1, the present embodiment is provided with at least one control passage K1 in the side wall of the valve body 1 at the upper part of the upper bearing cover 13. The control channel K1 is connected with a control valve, the control valve is preferably an electromagnetic valve, the control valve is connected with a high-pressure source or a low-pressure source, when the valve core 4 needs to be rotated, the control valve enables the pressure of the upper bearing cover 13 to be relieved, the valve core 4 deviates from the inner wall of the valve body 1, so that the valve core can be easily rotated, after the valve core 4 is rotated to a position, the control valve enables the pressure of the upper part of the upper bearing cover 13 to be increased, the upper bearing cover 13 is pressed downwards, then the upper bearing cover 13 is acted on a conical bearing, the valve core 4 is enabled to be tightly attached to the inner wall of the valve body 1, so that compensation and sealing are realized, and reducing sleeves are arranged among the upper bearing cover 13.

In this embodiment, be equipped with movable stop on lower play axle 9, be equipped with limit stop on lower bearing cap 14, the lower play axle 9 of case 4 drives movable stop and rotates, can be by limit stop limit position.

In this embodiment, be equipped with the sight glass on lower lid 3, can look over the valve body 1 rotation condition, the position that the valve body 1 inner wall is close to case 4 is equipped with wear-resisting sealing material.

In this embodiment, a control passage K2 is provided between the lower part of the lower bearing cap 14 and the lower cap body 3, and a control valve is connected to the control passage K2.

In this embodiment, the upper cover 2 of the valve body 1 is in the form of a cap, and an O-ring is arranged between the upper cover and the valve body 1. A sealing element is arranged between the lower cover body 3 and the valve body 1, and the sealing element firstly forms an O-shaped ring.

In this embodiment, the lower portion of the lower output shaft 9 of the valve element 4 is provided with a sensor plate, the sensor plate is provided with a magnetic block, the lower cover body 3 is provided with a sensor hole, the blind hole is selected as the sensor hole, the magnetic sensor is arranged in the sensor hole, the magnetic sensor and the magnetic block are in corresponding relation and distributed on a circle, and the magnetic block can be driven by the lower output shaft 9 of the valve element 4 to rotate. When the magnetic block is aligned with the sensor, the sensor outputs a signal.

In this embodiment, the number of the sensors may be one or more, and the number of the sensors and the magnetic blocks is any number greater than 1, and the sensors may be magnetic sensors, photoelectric sensors, mechanical switches, and the like.

Example 5

Based on embodiment 1, in this embodiment, four channels are formed in the sidewall of the valve body 1, and the four channels are provided with four sensors, the middle partition plate 5 of the valve core 4 is U-shaped (or C-shaped), and a channel is formed in the middle of the lower output shaft 9 of the lower partition plate 7 and is communicated with the hollow cavity of the U-shaped middle partition plate 5 of the valve core 4. The middle of the lower cover body 3 is provided with a channel which is communicated with the channel of the valve core 4, and the working principle of the lower cover body is the same as that of the other embodiment 1.

Example 6

Based on embodiment 1, in this embodiment, a channel J is opened between the valve element 4 and the upper output shaft 8, the channel J is communicated with a hollow portion on the right side of the middle partition plate 5 of the valve element 4, a channel L is arranged on the upper bearing cover 13, the channel L is communicated with the left side of the middle partition plate 5 of the valve element 4, a rotary valve head is arranged at a position corresponding to the channel L, a rotary plate is arranged on the driving shaft 15, the rotary valve head is arranged on the rotary plate, a spring is arranged between the rotary plate and the rotary valve head, the spring is pressed on the rotary valve head, and under the driving of the driving shaft 15, the opening and closing of.

In this embodiment, a hole is formed in the middle of the upper end surface of the upper output shaft 8 of the valve core 4, at least one driving pin shaft is arranged on the end surface between the middle hole and the upper output shaft 8, the driving shaft 15 drives the rotating plate to rotate and opens the communication between the rotating valve head and the channel L, and then when the rotating plate contacts the driving pin shaft, the valve core 4 is driven to rotate forwards and backwards.

Example 7

The present embodiment is different from the other embodiments in that the upper bearing cap 13 is integrated with the upper cap body 2 and then assembled to the valve body 1, and the lower bearing cap 14 is integrated with the lower cap body 3 and then integrated with the valve body 1. Thereby reducing the production cost.

It will be appreciated by those skilled in the art that the sealing between the drive shaft 15 and the valve body 1 may be a flat seal.

One skilled in the art will appreciate that multiple positions or sensors may be used, either partially on or fully on.

It will be appreciated by those skilled in the art that the compression of the upper and lower bearing caps 13, 14 may be performed by at least one cam or boss.

It will be appreciated by those skilled in the art that the valve may be driven by electric drive, pneumatic drive, hydraulic drive, etc., and the drive mechanism may be housed within the valve body,

as can be appreciated by those skilled in the art, the lower cover body 3 of the valve body 1 is provided with a channel, and the channel is communicated with the inner cavity of the valve core 4 to form a multi-way valve structure.

It will be appreciated by those skilled in the art that the position of the middle partition 5 is designed to be a channel through which fluid flows more easily, so that the resistance of the fluid can be further reduced.

Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.