CN213298266U

CN213298266U - Active one-way valve for rotor pump

Info

Publication number: CN213298266U
Application number: CN202021090241.7U
Authority: CN
Inventors: 张霄; 方业云; 戚厚羿; 徐士友; 倪新; 张培
Original assignee: Shandong Fangneng New Kinetic Energy Research Institute Co ltd
Current assignee: Shandong Fangneng New Kinetic Energy Research Institute Co ltd
Priority date: 2020-06-11
Filing date: 2020-06-11
Publication date: 2021-05-28
Anticipated expiration: 2030-06-11

Abstract

The utility model provides an initiative check valve for rotor pump, it sets up one set of rotatory check valve mechanism in addition in the rotor pump main part, when the rotational speed improves or pressure improves, opening of check valve no longer controls opening of check valve by the pressure of water, introduce the check valve through drive mechanism with the power on the novel rotor pump on, utilize opening of epaxial power control check valve, both solved the backward flow problem, also solved simultaneously because the check valve is because the inefficacy problem that pressure and rotational speed height lead to. The service life of the one-way valve is prolonged, and the overall service life and efficiency of the rotor pump are improved.

Description

Active one-way valve for rotor pump

Technical Field

The invention relates to the field of one-way valves, in particular to an active one-way valve for a rotor pump.

Background

The non-return valve is one of the components used in conjunction with the rotary pump, and its importance for the rotary pump is self-evident. However, under the condition that the rotor pump has high rotating speed and high flow rate, the valve core of the ordinary passive one-way valve cannot return due to too high switching frequency, and the one-way valve fails. And because the water velocity is very fast when the rotational speed is high, and is great to the impact of check valve, the check valve life-span can shorten sharply, and the corrosive action in addition often can cause the rotor pump system trouble to take place frequently.

Disclosure of Invention

The invention provides an active one-way valve for a rotor pump, aiming at solving the problem of low efficiency of the rotor pump under the variable working condition of the pump due to the fault of the one-way valve, the invention provides a new one-way valve idea, and the opening frequency of the one-way valve is controlled in a linkage manner by utilizing the self rotating speed of the rotor pump, so that the problem of failure of the one-way valve due to the over-high switching frequency is solved, and the service life of the one-way valve is prolonged.

The one-way valve of the prior rotor pump is mainly opened by the pressure of water per se, in a real working state, when the pressure of water is higher and the conveying frequency of water at a water inlet and a water outlet is higher, a series of problems such as large noise, low strength and the like can be caused by the common metal one-way valve, and fatigue damage is easy to occur.

The solution of the invention is: the force on the rotor pump shaft is transmitted to the valve core in the cavity of the active one-way valve by the transmission mechanism, and the valve port is opened at the position corresponding to the valve core, so that the opening of the active one-way valve is controlled by the rotation of the rotor pump shaft.

The active one-way valve for the rotor pump is characterized by comprising a gear transmission mechanism, a valve box, a valve core and a rotor pump, wherein the valve core is installed in the valve box, the rotor pump transmits power to the valve core through the transmission mechanism, and the position difference of two valve ports arranged on the valve core is 90 degrees.

Furthermore, two valve cores are arranged on each valve box.

Furthermore, the valve ports of the same valve core are water inlets or water outlets at the same time.

Further, the rotation of the valve core is controlled by the transmission mechanism, and the gear transmission mechanism comprises a driving gear, an intermediate gear and a one-way valve gear; the driving gear is installed on an input shaft of the rotor pump, the intermediate gear is installed on the rotor pump, and the one-way valve gear is installed on the valve core.

Further, the valve core is provided with a sealing groove, two ends of the valve core are provided with shaft end sealing grooves, two shaft end sealing grooves are formed, and a middle sealing groove is formed in the middle of the valve core.

Furthermore, an O-shaped sealing ring is arranged in the sealing groove.

Furthermore, the valve core is provided with valve ports, the two valve ports form a 90-degree included angle, two ends of the valve core are provided with shaft end sealing grooves, the number of the shaft end sealing grooves is two, a bearing seat is arranged on the outer side of each shaft end sealing groove, and the middle of the valve core is provided with a middle sealing groove.

Further, the valve core is fixed in the valve box.

Furthermore, the mounting positions of the active one-way valves of the two water inlets of the same cylinder body of the rotor pump are 90 degrees different from each other, and the mounting positions of the active one-way valves of the water outlets are 90 degrees different from each other.

Furthermore, the valve core water inlet and outlet and the one-way valve of the water inlet and outlet of the rotor pump are provided with a water inlet delay angle and a water drainage advance angle which are set according to actual requirements.

Further, a water inlet and outlet assembly is arranged on the valve box.

Further, the movable sealing rings arranged in the shaft end sealing groove and the middle sealing groove are O-shaped rings.

Further, a static sealing ring arranged between the valve box and the rotor pump is an O-shaped ring.

Further, the valve box is provided with screw holes on both sides for fixing to the rotor pump.

The rotor pump with the rotary one-way valve mechanism has the beneficial effects that: when the rotating speed or the pressure of the rotor pump is increased, the opening of the one-way valve is not controlled by the pressure of water any more, the power on the rotor pump shaft is introduced to the one-way valve through the transmission mechanism, and the opening of the one-way valve is controlled by the power on the rotor pump shaft, so that the backflow problem is solved, and the failure problem caused by the high pressure and the high rotating speed of the one-way valve is solved. The service life of the one-way valve is prolonged, and the service life and the efficiency of the rotor pump are improved.

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, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for a customer of ordinary skill in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a perspective view of a gerotor pump and an active check valve;

FIG. 2 is a three-dimensional perspective view of the active check valve;

FIG. 3 is a front view of the valve cartridge;

FIG. 4 is a front view of the valve cartridge II;

FIG. 5 is a front view of the valve cartridge;

FIG. 6 is a front view of the valve cartridge;

FIG. 7 is a front view of the transmission;

FIG. 8 is an internal schematic view of a cylinder-active check valve mechanism;

FIG. 9 is an internal schematic diagram of a secondary active check valve mechanism of the cylinder block;

in the figure, 1, a transmission mechanism, 101, a driving gear, 102, an intermediate gear, 103, a one-way valve gear, 2, a driving one-way valve mechanism, 201, a first valve core, 202, a second valve core, 203, a valve box, 204, a first cylinder water outlet valve port, 205, a first cylinder water outlet valve port, 206, a shaft end sealing groove, 207, an intermediate sealing groove, 208, a first cylinder water inlet valve port, 209, a first cylinder water inlet valve port, 210, a third valve core, 211, a fourth valve core, 212, a second cylinder water outlet valve port, 213, a second cylinder water outlet valve port, 214, a second cylinder water inlet valve port, 215, a second cylinder water inlet valve port, 3, a rotor pump, 301, a first rotor, 302, a second rotor, 4, a static sealing groove, 5, a first water inlet, 6, a first water outlet, 7, a second water inlet, and 8, a second water outlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

In the embodiment of the present invention, as shown in fig. 1 to 9, the transmission mechanism 1 includes a driving gear 101, an intermediate gear 102, a check valve gear 103; the driving gear 101 is mounted on an eccentric shaft of the rotor pump 3, the intermediate gear 102 drives the one-way valve gear 103 to rotate, the four driving one-way valve mechanisms 2 synchronously rotate, the initial mounting positions of two rotors in the rotor pump 3 are different by 180 degrees, one of the two rotors in the first rotor 301 faces to the right upper side when mounted, and one of the two rotors in the second rotor 302 faces to the right lower side when mounted.

In the specific embodiment of the present invention, referring to fig. 1-9, the valve core is installed in the valve box 203, the cylinder one water outlet valve port one 204 on the water outlet one 6 of the cylinder where the rotor one 301 is located is just at the starting opening position, and at this time, the position of the cylinder two water outlet valve port one 205 on the valve core one 201 and the cylinder one water outlet valve port 204 form an included angle of 90 degrees. The second cylinder inlet valve port 214 on the second water inlet 7 is just at the initial closing position, and at this time, the second cylinder inlet valve port 215 on the fourth valve core 211 is at a position forming a 90-degree included angle with the second cylinder inlet valve port 214. The first inlet valve port 209 of the cylinder body on the first water inlet 5 of the cylinder body where the second rotor 302 is located is just at the initial closing position, and at the moment, an included angle of 90 degrees is formed between the first inlet valve port 208 of the cylinder body of the second valve core 202 and the first inlet valve port 209 of the cylinder body. The second outlet port 213 of the second cylinder on the second water outlet 8 is just at the starting opening position, and the second outlet port 212 of the first cylinder on the third valve core 210 connected with the second outlet port 213 of the second cylinder forms a 90-degree included angle.

In the embodiment of the invention, as shown in fig. 1-9, when the rotor pump 3 works, the input shaft rotates counterclockwise and drives the driving gear 101 to rotate synchronously, the driving gear 101 drives the one-way valve gear 103 to rotate through the intermediate gear 102, thereby driving each valve core to rotate, and when the rotor pump 3 works, the first rotor 301 and the second rotor 302 are also driven to rotate counterclockwise synchronously. Shaft end sealing grooves 206 are formed at the left end and the right end of the valve core, and a middle sealing groove 207 is formed in the middle of the valve core. Sealing rings are arranged on the shaft end sealing groove 206 and the middle sealing groove 207, the sealing rings on the shaft end sealing groove 206 are mainly used for sealing water in the active one-way valve 2 and preventing water flow from overflowing, and the sealing rings on the middle sealing groove 207 are mainly used for preventing water in two chambers in the active one-way valve 2 from mutually jumping and influencing the efficiency of the rotor pump 3.

In the embodiment of the invention, as shown in fig. 1-9, the valve box 2 is further provided with a static seal groove 4, and a seal ring is installed in the static seal groove 4 to prevent water from flowing out from a gap between the rotor pump 3 and the valve box 2.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The active one-way valve for the rotor pump is characterized by comprising a gear transmission mechanism, a valve box, a valve core and a rotor pump, wherein the valve core is arranged in the valve box, the rotor pump transmits power to the valve core through the transmission mechanism, and the positions of two valve ports arranged on the valve core are different by 90 degrees; two valve cores are arranged on each valve box; the valve ports of the same valve core are water inlets or water outlets at the same time; the valve core is provided with a sealing groove, two ends of the valve core are provided with shaft end sealing grooves, two shaft end sealing grooves are formed, and a middle sealing groove is formed in the middle of the valve core.

2. The active check valve for a rotor pump as claimed in claim 1, wherein: the rotation of the valve core is controlled by the transmission mechanism, and the gear transmission mechanism comprises a driving gear, an intermediate gear and a one-way valve gear; the driving gear is installed on an input shaft of the rotor pump, the intermediate gear is installed on the rotor pump, and the one-way valve gear is installed on the valve core.

3. The active check valve for a rotor pump as claimed in claim 1, wherein: and an O-shaped sealing ring is arranged in the sealing groove.

4. The active check valve for a rotor pump as claimed in claim 1, wherein: the active one-way valves of the two water inlets of the same cylinder body of the rotor pump are 90 degrees different in installation position, and the active one-way valves of the water outlets are 90 degrees different in installation position.

5. The active check valve for a rotor pump as claimed in claim 1, wherein: and the static sealing ring arranged between the valve box and the rotor pump is an O-shaped ring.