Active one-way valve for rotor pump

Abstract

An active one-way valve for a rotor pump is a set of rotating one-way valve mechanism set on the rotor pump body. When the speed or pressure increases, the opening of the one-way valve is no longer controlled by the water pressure. The power on the new rotor pump 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 shaft, which not only solves the backflow problem, but also solves the failure problem caused by the one-way valve due to high pressure and speed. It not only prolongs the service life of the one-way valve, but also improves the overall service life and efficiency of the rotor pump.

Description

Technical Field

[0001] The invention relates to the field of one-way valves, and in particular to an active one-way valve for a rotor pump. Background Art

[0002] As one of the supporting components of the rotor pump, the importance of the check valve to the rotor pump is self-evident. However, when the rotor pump has a high speed and a large flow rate, the ordinary passive check valve usually used often causes the valve core to fail to return to its original position due to the high switching frequency, and the check valve fails. In addition, due to the high speed and the fast water flow rate, the impact on the check valve is large, and the service life of the check valve will be sharply shortened. Coupled with the corrosion effect, it often causes frequent failures of the rotor pump system. Summary of the invention

[0003] The present invention proposes an active one-way valve for a rotor pump. In order to solve the problem of low efficiency of the rotor pump under variable pump conditions due to a one-way valve failure, the present invention provides a new one-way valve concept, which uses the rotation speed of the rotor pump itself to control the opening frequency of the one-way valve in a linkage manner, thereby solving the problem of failure of the one-way valve due to excessive switching frequency and improving the life of the one-way valve.

[0004] In the past, the check valve of the rotor pump mainly relied on the pressure of the water itself to open the check valve. In actual working conditions, when the water pressure is high and the frequency of water transportation at the inlet and outlet is high, the ordinary metal check valve will produce a series of problems such as high noise and low strength, and it is very easy to suffer fatigue damage. The reason is that when the speed of the rotor pump increases, the check valve has not had time to close, and the water has been squeezed out to the outlet on the water pump cavity, or the check valve is damaged due to the high water pressure. The resulting problem is that the flow rate and pressure of the rotor pump are reduced, which cannot meet the requirements of the operating conditions.

[0005] The solution of the present invention is to transmit the force on the rotor pump shaft to the valve core in the active one-way valve cavity by using a transmission mechanism, and at the same time, a valve port is opened at a position corresponding to the valve core, and the opening of the active one-way valve is controlled by the rotation of the rotor pump shaft itself.

[0006] An active one-way valve for a rotor pump is characterized in that it includes a gear transmission mechanism, a valve box, a valve core and a rotor pump, wherein the valve core is installed in the valve box, and 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 differ by 90 degrees.

[0007] Furthermore, two valve cores are installed on each valve box.

[0008] Furthermore, the valve port of the same valve core is simultaneously a water inlet or simultaneously a water outlet.

[0009] Furthermore, the rotation of the valve core is controlled by the transmission mechanism, and the gear transmission mechanism includes a driving gear, an intermediate gear, and a one-way valve gear;

[0010] The driving gear is mounted on the input shaft of the rotor pump, the intermediate gear is mounted on the rotor pump, and the one-way valve gear is mounted on the valve core.

[0011] Furthermore, the valve core is provided with a sealing groove, axial end sealing grooves are provided at both ends of the valve core, there are two axial end sealing grooves, and an intermediate sealing groove is provided in the middle of the valve core.

[0012] Furthermore, an O-ring is installed in the sealing groove.

[0013] Furthermore, a valve port is formed on the valve core, and the two valve ports form a 90-degree angle. Shaft end sealing grooves are formed at both ends of the valve core. There are two shaft end sealing grooves, and a bearing seat is installed on the outer side of the shaft end sealing groove. An intermediate sealing groove is formed in the middle of the valve core.

[0014] Furthermore, the valve core is fixed in the valve box.

[0015] Furthermore, the installation positions of the active one-way valves of the two water inlets of the same cylinder body of the rotor pump differ by 90 degrees, and the installation positions of the active one-way valves of the water outlet differ by 90 degrees.

[0016] Furthermore, the one-way valves at the water inlet and outlet of the valve core and the water inlet and outlet of the rotor pump have a water inlet delay angle and a water discharge advance angle, which are set according to actual needs.

[0017] Furthermore, a water inlet and outlet assembly is provided on the valve box.

[0018] Furthermore, the dynamic sealing rings installed in the shaft end sealing groove and the middle sealing groove are O-rings.

[0019] Furthermore, the static sealing ring installed between the valve box and the rotor pump is an O-ring.

[0020] Furthermore, the valve box is provided with threaded holes on both sides for fixing on the rotor pump.

[0021] The beneficial effect of the rotor pump with a rotating one-way valve mechanism of the present invention is that when the speed or pressure of the rotor pump increases, the opening of the one-way valve is no longer controlled by the water pressure, and 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, which not only solves the backflow problem, but also solves the failure problem of the one-way valve caused by high pressure and speed. It not only prolongs the service life of the one-way valve, but also improves the service life and efficiency of the rotor pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 Stereoscopic view of the rotary pump and active non-return valve;

[0024] Figure 2 Active one-way valve three-dimensional stereogram;

[0025] Figure 3 The valve core is a front view;

[0026] Figure 4 The second main view of the valve core;

[0027] Figure 5 Three main views of the valve core;

[0028] Figure 6 Four main views of the valve core;

[0029] Figure 7 The front view of the transmission mechanism;

[0030] Figure 8 Internal schematic diagram of the cylinder block-active one-way valve mechanism;

[0031] Fig. 9 Internal schematic diagram of the active one-way valve mechanism of cylinder block 2;

[0032] In the figure, 1. transmission mechanism, 101. driving gear, 102. intermediate gear, 103. one-way valve gear, 2. active one-way valve, 201. valve core 1, 202. valve core 2, 203. valve box, 204. outlet valve port 1 of cylinder body 1, 205. outlet valve port 1 of cylinder body 2, 206. shaft end sealing groove, 207. intermediate sealing groove, 208. inlet valve port 1 of cylinder body 1, 209. inlet valve port 1 of cylinder body 2, 210. valve core 3, 211. valve core 4, 212. outlet valve port 2 of cylinder body 1, 213. Water outlet valve port 2 of cylinder body 2, 214. Water inlet valve port 2 of cylinder body 1, 215. Water inlet valve port 2 of cylinder body 2, 3. Rotor pump, 301. Rotor 1, 302. Rotor 2, 4. Static sealing groove, 5. Water inlet 1, 6. Water outlet 1, 7. Water inlet 2, 8. Water outlet 2. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In a specific embodiment of the present invention, see Figure 1-9 The transmission mechanism 1 includes a driving gear 101, an intermediate gear 102, and a one-way valve gear 103; the driving gear 101 is installed on the eccentric shaft of the rotor pump 3, and drives the one-way valve gear 103 to rotate through the intermediate gear 102, and the four active one-way valves 2 rotate synchronously. The initial installation positions of the two rotors in the rotor pump 3 differ by 180 degrees. When the rotor 1 301 is installed, one of its corners faces directly upward, and when the rotor 2 302 is installed, one of its corners faces directly downward.

[0035] In a specific embodiment of the present invention, see Figure 1-9 , the valve core is installed in the valve box 203, the cylinder body one water outlet valve port 1 204 on the water outlet port 1 6 of the cylinder body where the rotor 1 301 is located is just in the start opening position, at this time, the cylinder body two water outlet valve port 1 205 on the valve core 1 201 is located at a 90 degree angle with the cylinder body one water outlet valve port 1 204. The cylinder body one water inlet valve port 2 214 on the water inlet port 2 7 is just in the start closing position, and at this time, the cylinder body two water inlet valve port 2 215 on the valve core 4 211 is located at a 90 degree angle with the cylinder body one water inlet valve port 2 214. The cylinder body two water inlet valve port 1 209 on the water inlet port 1 5 of the cylinder body where the rotor 2 302 is located is just in the start closing position, at this time, the cylinder body one water inlet valve port 1 208 of the valve core 202 and the cylinder body two water inlet valve port 1 209 form a 90 degree angle. The cylinder body 2 water outlet valve port 213 on the water outlet port 2 8 is just in the start-opening position, at which time the cylinder body 1 water outlet valve port 212 and the cylinder body 2 water outlet valve port 213 on the valve core 3 210 connected thereto form an angle of 90 degrees.

[0036] In a specific embodiment of the present invention, see Figure 1-9When the rotor pump 3 is working, its input shaft rotates in the counterclockwise direction and drives the active gear 101 to rotate synchronously. The active gear 101 drives the one-way valve gear 103 to rotate through the intermediate gear 102, thereby driving each valve core to rotate. When the rotor pump 3 is working, it also drives the rotor 1 301 and the rotor 2 302 to rotate synchronously in the counterclockwise direction. The left and right ends of the valve core are provided with shaft end sealing grooves 206, and the middle sealing groove 207 is provided in the middle of the valve core. Sealing rings are installed on both the shaft end sealing groove 206 and the middle sealing groove 207. The sealing ring on the shaft end sealing groove 206 is mainly used to seal the water in the active one-way valve 2 to prevent water from overflowing. The sealing ring on the middle sealing groove 207 is mainly used to prevent the water in the two chambers of the active one-way valve 2 from moving mutually and affecting the efficiency of the rotor pump 3.

[0037] In a specific embodiment of the present invention, see Figure 1-9 A static sealing groove 4 is also provided on the valve box 203, and a sealing ring is installed in the static sealing groove 4 to prevent water from flowing out of the gap between the rotor pump 3 and the valve box 2.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An active one-way valve for a rotor pump, characterized in that: It includes a gear transmission mechanism, a valve box, a valve core and a rotor pump, the valve box is fixed on the rotor pump, the valve core is installed in the valve box, and the rotor pump transmits power to the valve core through the transmission mechanism; two valve cores are installed on each valve box; two valve ports arranged on the valve core are on different parallel planes and form an angle of 90 degrees; axial end sealing grooves are provided at the left and right ends of the valve core, and an intermediate sealing groove is provided in the middle of the valve core; a static sealing groove is provided on the valve box; the installation positions of the active one-way valves of the two water inlets of the same cylinder body of the rotor pump differ by 90 degrees, and the installation positions of the active one-way valves of the water outlet differ by 90 degrees.

2. An active one-way valve for a rotor pump as claimed in claim 1, characterized in that: The valve opening of the same valve core is a water inlet or a water outlet at the same time.

3. An active one-way valve for a rotor pump as claimed in claim 1, characterized in that: The rotation of the valve core is controlled by the transmission mechanism, and the gear transmission mechanism includes a driving gear, an intermediate gear, and a one-way valve gear; The driving gear is mounted on the input shaft of the rotor pump, the intermediate gear is mounted on the rotor pump, and the one-way valve gear is mounted on the valve core.

4. An active one-way valve for a rotor pump according to claim 1, characterized in that: The valve core and the sealing groove on the valve box are equipped with O-type sealing rings.

5. The active one-way valve for a rotor pump according to claim 1, characterized in that: The valve box is provided with threaded holes on both sides for fixing on the rotor pump.

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