CN213575710U

CN213575710U - Multi-channel reversing sample injection valve corrected by using sealing ring

Info

Publication number: CN213575710U
Application number: CN202022120060.0U
Authority: CN
Inventors: 陈金勇
Original assignee: Nanjing Hengchuang Precision Technology Co ltd
Current assignee: Nanjing Hengchuang Precision Technology Co ltd
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2021-06-29
Anticipated expiration: 2030-09-24

Abstract

The utility model discloses a multi-channel reversing sample injection valve corrected by a seal ring, which comprises a valve body stator, a valve body rotor, an O-shaped ring, an elastic component, a plane thrust ball bearing and a valve seat; the valve body stator is fixed at the upper end of the valve seat; the valve body rotor, the O-shaped ring, the elastic component and the plane thrust ball bearing are sequentially arranged in a cavity between the valve body stator and the valve seat from top to bottom; the upper end of the valve body rotor is a valve core, and the lower end of the valve body rotor is a rotating shaft; the O-shaped ring is arranged between the valve core and the valve seat; the elastic component and the plane thrust ball bearing are sleeved on a rotating shaft at the lower end of the valve body rotor, and the outer ring of the plane thrust ball bearing is clamped in the valve seat clamping groove; the whole structure is simple, and the manufacturing cost is reduced.

Description

Multi-channel reversing sample injection valve corrected by using sealing ring

Technical Field

The invention belongs to the field of fluid valve devices, and particularly relates to a multi-channel reversing sample injection valve corrected by using a sealing ring.

Background

The reversing valve is a direction control valve with more than two flow forms or more than two flow ports, and is a valve for realizing communication, cutting off and reversing of liquid, pressure unloading and sequential action control; reversing valves have a wide range of applications for controlling fluid make and break.

Chinese patent CN206738631U discloses a multichannel switching-over inlet valve, this multichannel switching-over inlet valve makes rotor housing can freely swing in the axis of rotation upper end through set up the spheroid between rotor housing and axis of rotation, automatically realize adjusting the correction well of valve body rotor, but this multichannel switching-over inlet valve structure is complicated, need set up the cylinder structure at rotor housing both ends, the lower extreme sets up the hemisphere hole, need set up the draw-in groove in axis of rotation upper end both sides simultaneously, the round hole bottom sets up the hemisphere hole, whole structure is complicated, the processing cost is high.

Disclosure of Invention

The invention aims to provide a multi-channel reversing sample injection valve corrected by using a sealing ring, and provides a sample injection valve with a simple structure.

The technical solution for realizing the purpose of the invention is as follows:

a multi-channel reversing sample injection valve corrected by using a sealing ring comprises a valve body stator, a valve body rotor, an O-shaped ring, an elastic component, a plane thrust ball bearing and a valve seat;

the valve body stator is fixed at the upper end of the valve seat; the valve body rotor, the O-shaped ring, the elastic component and the plane thrust ball bearing are sequentially arranged in a cavity between the valve body stator and the valve seat from top to bottom; the upper end of the valve body rotor is a valve core, and the lower end of the valve body rotor is a rotating shaft; the O-shaped ring is arranged between the valve core and the valve seat; the elastic component and the plane thrust ball bearing are sleeved on a rotating shaft at the lower end of the valve body rotor, and the outer ring of the plane thrust ball bearing is clamped in the valve seat clamping groove.

Compared with the prior art, the invention has the following remarkable advantages:

(1) the utility model discloses a multichannel switching-over sampling valve sets case and axis of rotation to integrative valve body rotor, simple structure, and the cost is reduced relies on the elastic fit of O type circle simultaneously for the valve body rotor has better corrective action with the inseparable elastic fit of disk seat, and the structure is also great to be simplified, has reduced manufacturing cost.

(2) Under the effect of elastic component, make valve body stator and case rotor find the center closely laminate automatically, guarantee the gas tightness of product, reduce frictional force, improved the life of product.

Drawings

Fig. 1 is an exploded view of the overall structure.

Fig. 2 is a schematic overall cross-sectional view.

Fig. 3 is an exploded sectional view schematically.

Detailed Description

The invention is further described with reference to the following figures and embodiments.

With reference to fig. 1-3, the multi-channel reversing sample valve using seal ring calibration of the present invention comprises a valve body stator 1, a valve body rotor 2, an O-ring 3, an elastic component 4, a planar thrust ball bearing 5, and a valve seat 6;

the valve body stator 1 is fixed at the upper end of the valve seat 6 through a fastener; the valve body rotor 2, the O-shaped ring 3, the elastic component 4 and the plane thrust ball bearing 5 are sequentially arranged in a cavity between the valve body stator 1 and the valve seat 6 from top to bottom; the upper end of the valve body rotor 2 is provided with a valve core 2-1, and the lower end is provided with a rotating shaft 2-2; the O-shaped ring 3 is arranged between the valve core 2-1 and the valve seat 6, the O-shaped ring 3 can be arranged in an annular groove at the upper end of a round hole of the valve seat 6, then the valve body rotor 2 is pressed into the valve seat 6, the valve body rotor 2 is in interference fit with the O-shaped ring 3, the valve body rotor 2 is in close elastic fit with the valve seat 6 by means of the O-shaped ring 3, the valve body stator 1, the valve body rotor 2 and the valve seat 6 are enabled to be coaxial, a good correcting effect is achieved, and the valve body rotor 2 and the valve body stator 1 are enabled to be. The elastic component 4 and the plane thrust ball bearing 5 are both sleeved on a rotating shaft 2-2 at the lower end of the valve body rotor 2, and the outer ring of the plane thrust ball bearing 5 is clamped in a clamping groove of the valve seat 6; the elastic component 4 pushes and pulls upwards, so that the upper end surface of the valve body rotor 2 is always tightly attached to the valve body stator 1.

Preferably, the elastic structural member 4 is a belleville spring, and when the elastic structural member is installed, the valve seat 6 is fixed on the shell of the external driving structure, and the belleville spring is in a compressed state; the outer diameters of the belleville spring and the plane thrust ball bearing 5 are smaller than the diameter of the circular hole of the valve seat 6; under the supporting action of the plane thrust ball bearing 5, the belleville spring generates upward thrust, so that the valve body rotor 2 and the valve body stator 1 are always tightly attached, the valve body stator 1 and the valve body rotor 2 are automatically aligned to be in tight fit with each other, the air tightness of a product is ensured, the friction force is reduced, and the service life of the product is prolonged.

In some embodiments, the elastic structure 4 may also be another type of spring or elastic rubber.

Furthermore, a public interface tube 12 is arranged in the middle of the upper end of the valve body stator 1, a reversing interface tube 11 is arranged on the circumference of the valve body stator 1, the reversing interface tube 11 is a 90-degree bent tube, one end of the reversing interface tube faces to the radial direction of the valve body stator 1, and the other end of the reversing interface tube faces downwards in parallel to the axial direction of the valve body stator 1; the upper end of the valve body rotor 2 is provided with a common connecting groove 21; one end of the common connecting groove 21 is positioned in the center of the valve body rotor 2 and is always connected with the common interface tube 12 of the valve body stator 1; the other end of the common connecting groove 21 is connected with different reversing interface tubes 12 through the rotation of the valve body rotor 2; the rotation of the valve rotor 2 drives the common connecting groove 21 to rotate, so that selective conduction between the common connecting pipe 12 and different reversing pipe connectors 11 is realized, and the reversing pipe connectors 11 are convenient to process.

Furthermore, a stepping motor is arranged at the lower end of the valve seat 6, and an output shaft of the stepping motor is connected with the rotating shaft 2-2 and used for driving the rotating shaft 2-2 to rotate. When the reversing connection pipe works, the rotating shaft 2-2 rotates to drive the valve body rotor 2 to rotate under the action of an external driving mechanism (a stepping motor), and further drives the common connection groove 21 to rotate, so that selective conduction of the common connection pipe 12 and different reversing connection pipes 11 is realized. Through the action of the O-shaped ring 3, the valve body stator 1 and the valve body rotor 2 are always kept coaxially sealed through the O-shaped ring 3; meanwhile, under the further action of the belleville spring 7, the valve body stator 1 and the valve body rotor 2 are automatically aligned to the center and tightly attached to each other, so that the air tightness of the product is guaranteed, the friction force is reduced, and the service life of the product is prolonged.

Claims

1. A multi-channel reversing sample injection valve corrected by using a sealing ring comprises a valve body stator (1), a valve body rotor (2), an O-shaped ring (3), an elastic component (4), a plane thrust ball bearing (5) and a valve seat (6); it is characterized in that the preparation method is characterized in that,

the valve body stator (1) is fixed at the upper end of the valve seat (6); the valve body rotor (2), the O-shaped ring (3), the elastic component (4) and the plane thrust ball bearing (5) are sequentially arranged in a cavity between the valve body stator (1) and the valve seat (6) from top to bottom; the upper end of the valve body rotor (2) is provided with a valve core (2-1), and the lower end is provided with a rotating shaft (2-2); the O-shaped ring (3) is arranged between the valve core (2-1) and the valve seat (6); the elastic component (4) and the plane thrust ball bearing (5) are sleeved on the rotating shaft (2-2) at the lower end of the valve body rotor (2), and the outer ring of the plane thrust ball bearing (5) is clamped in the clamping groove of the valve seat (6).

2. The multi-channel reversing sample injection valve according to claim 1, wherein the elastic member (4) is a belleville spring.

3. The multi-channel reversing sample injection valve according to claim 1, wherein the elastic member (4) is a spring or an elastic rubber.

4. The multi-channel reversing sample injection valve according to claim 1, wherein a common connector tube (12) is arranged in the middle of the upper end of the valve body stator (1), a reversing connector tube (11) is arranged on the circumference of the valve body stator (1), and a common connecting groove (21) is arranged at the upper end of the valve body rotor (2); one end of the common connecting groove (21) is positioned in the center of the valve body rotor (2) and is always connected with the common interface tube (12) of the valve body stator (1); the other end of the common connecting groove (21) is connected with different reversing interface tubes (11) through rotation.

5. The multi-channel reversing sample injection valve according to claim 4, wherein the reversing interface tube (11) is a 90-degree bent tube, one end faces to the radial direction of the valve body stator (1), and the other end faces downwards in parallel with the axial direction of the valve body stator (1).

6. The multi-channel reversing sampling valve according to claim 1, characterized in that the driving mechanism at the lower end of the valve seat (6) is provided with a driving mechanism for driving the valve body rotor (2) to rotate.

7. The multi-channel reversing sample injection valve according to claim 6, wherein the driving mechanism is a stepper motor.

8. The multi-channel reversing sample injection valve according to claim 1, wherein the O-shaped ring (3) is arranged in an annular groove at the upper end of the circular hole of the valve seat (6).