A single-cylinder rotor pump with a rotary check valve

Abstract

The present invention relates to a single-cylinder rotor pump with a rotating one-way valve, comprising: a single-cylinder rotor pump, a transmission mechanism, a first one-way valve, a second one-way valve, a third one-way valve, a fourth one-way valve and a first valve core; the first one-way valve, the second one-way valve, the third one-way valve and the fourth one-way valve are connected to a pump body of the single-cylinder rotor pump; the transmission mechanism connects the single-cylinder rotor pump and the first one-way valve, the second one-way valve, the third one-way valve and the fourth one-way valve; when working, the power of the single-cylinder rotor pump is transmitted to the valve core of the one-way valve through the transmission mechanism, so that the synchronization of the rotation of the valve core and the eccentric shaft of the single-cylinder rotor pump is achieved, the closing timeliness of the one-way valve is guaranteed, there is no time lag phenomenon, and the problem of untimely opening and closing of ordinary one-way valves due to excessively high frequency is effectively avoided, and the structure is simple and the volume is compact.

Description

Technical Field

[0001] The invention relates to the field of rotor pumps, in particular to a single-cylinder rotor pump with a rotary one-way valve. Background Art

[0002] Existing water pumps can be divided into types such as positive displacement pumps and vane pumps according to their working principles. Positive displacement pumps refer to pumps that use the change in the volume of the pump cylinder to transport liquids, mainly including: piston pumps, plunger pumps, rotor pumps, diaphragm pumps, gear pumps, vane pumps, screw pumps, etc. Positive displacement pumps such as reciprocating pumps have strong self-priming ability, and the theoretical flow rate has nothing to do with the working pressure, but only depends on the speed, pump cylinder size and number of actions. However, the flow rate is uneven, the speed should not be too fast, it is not very sensitive to liquid contamination, the structure is more complex, and there are many vulnerable parts that are not easy to repair, and the capital consumption is large. Vane pumps use the interaction between rotating blades and water to transfer energy, and there are types such as centrifugal pumps, axial flow pumps and mixed flow pumps. At present, the rotor pumps used generally have problems such as low efficiency such as pressure and flow attenuation due to one-way valve failure after a period of use, and cannot meet the actual use needs of rotor pumps; at the same time, the frequent opening and closing of the pump check valve also has a great destructive effect on the pump check valve, and the check valve is very easy to fail and has a short service life. Summary of the invention

[0003] The present invention provides a single-cylinder rotor pump with a rotating one-way valve. By arranging a single-cylinder rotor pump, a transmission mechanism, a first one-way valve, a second one-way valve, a third one-way valve, a fourth one-way valve and a first valve core, accurate opening and closing of the one-way valve is achieved. The structure is simple, the volume is compact, and the opening and closing time of the one-way valve is controllable.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A single-cylinder rotor pump with a rotary one-way valve, characterized in that it comprises: a single-cylinder rotor pump, a transmission mechanism, a first one-way valve, a second one-way valve, a third one-way valve, a fourth one-way valve and a first valve core;

[0006] The first one-way valve, the second one-way valve, the third one-way valve and the fourth one-way valve are connected to the pump body of the single-cylinder rotor pump;

[0007] The transmission mechanism connects the single-cylinder rotor pump with the first one-way valve, the second one-way valve, the third one-way valve and the fourth one-way valve.

[0008] Furthermore, the single-cylinder rotor pump comprises a first bearing seat, a first end cover, a pump body, a rotor, an eccentric shaft, a second end cover and a second bearing seat, an edge arc seal, and an O-ring;

[0009] The first bearing seat is connected to the first end cover, and the first end cover is connected to the pump body;

[0010] The second end cover is mounted on the other side of the pump body, and the second bearing seat is mounted on the second end cover;

[0011] The rotor is installed in the pump body, the eccentric shaft is installed in the rotor, and two sides of the eccentric shaft are respectively connected to the first bearing seat and the second bearing seat through bearings.

[0012] Furthermore, the transmission mechanism includes a driving gear, a transition gear and a driving gear; the driving gear is meshed with the transition gear, and the transition gear is meshed with the driving gear;

[0013] The driving gear is mounted on the eccentric shaft, the transition gear is mounted on the second end cover, and the driving gear is mounted on the valve core;

[0014] The transmission ratio from the driving gear to the drive gear is 2:1.

[0015] Furthermore, the first one-way valve, the second one-way valve, the third one-way valve and the fourth one-way valve have the same structure, and the first one-way valve mechanism includes a first valve core and a valve body.

[0016] Furthermore, the first valve core and the valve body are fitted with a small gap.

[0017] Furthermore, it also includes a first valve core, a second valve core, a third valve core, and a fourth valve core; the first valve core, the second valve core, the third valve core, and the fourth valve core have the same structure, and sealing ring grooves are provided at both ends of the first valve core, and a valve port is provided in the middle part, and dynamic sealing rings can be installed in the sealing ring grooves at both ends to achieve sealing between the valve core and the valve housing.

[0018] Furthermore, the dynamic sealing ring material is polyurethane.

[0019] Furthermore, edge arc seals and O-rings are installed on both sides of the rotor; slots are provided on the three corners of the edge arc seal; an inner gear ring is installed inside the rotor, and the inner gear ring is meshed with the outer gear on the second bearing seat.

[0020] Furthermore, the edge arc sealing material is high molecular weight polytetrafluoroethylene carbon fiber;

[0021] The present invention arranges a single-cylinder rotor pump, a transmission mechanism, a first one-way valve, a second one-way valve, a third one-way valve, a fourth one-way valve and a first valve core; when working, the power of the single-cylinder rotor pump is transmitted to the valve core of the one-way valve through the transmission mechanism, thereby realizing the synchronization of the rotation of the valve core and the eccentric shaft of the single-cylinder rotor pump. The one-way valve has a high opening and closing frequency and no time lag, which effectively avoids the problem that the ordinary one-way valve has no time to close due to the excessively high frequency. The structure is simple, the size is compact, and the one-way valve switches accurately and timely. 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 technical customers in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 It is a front view of a single-cylinder rotor pump with a rotary one-way valve of the present invention;

[0024] Figure 2 It is a disassembled three-dimensional structural diagram of a rotor pump of a single-cylinder rotor pump with a rotary one-way valve of the present invention;

[0025] Figure 3 It is a rear view of a single-cylinder rotor pump with a rotary one-way valve of the present invention;

[0026] Figure 4 It is a three-dimensional structural diagram of a first valve core of a single-cylinder rotor pump with a rotary one-way valve according to the present invention;

[0027] Figure 5 It is a schematic diagram of the position of the rotor and the one-way valve of the single-cylinder rotor pump with a rotary one-way valve of the present invention;

[0028] In the figure: 1. single-cylinder rotor pump, 101. first bearing seat, 102. first end cover, 103. pump body, 104. rotor, 105. eccentric shaft, 106. second end cover, 107. second bearing seat, 108. side arc seal, 109. O-ring, 1010. inner gear ring, 2. transmission mechanism, 201. driving gear, 202. transition gear, 203. driving gear, 3. first one-way valve, 4. second one-way valve, 5. third one-way valve, 6. fourth one-way valve, 7. first valve core, 701. sealing ring groove, 702. valve port, 8. second valve core, 9. third valve core, 10. fourth valve core. DETAILED DESCRIPTION

[0029] 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.

[0030] The invention is further described below in conjunction with the accompanying drawings.

[0031] In a specific embodiment of the present invention, see Figure 1-4, a single-cylinder rotor pump with a rotary one-way valve, comprising: a single-cylinder rotor pump 1, a transmission mechanism 2, a first one-way valve 3, a second one-way valve 4, a third one-way valve 5, a fourth one-way valve 6 and a first valve core 7;

[0032] The first one-way valve 3, the second one-way valve 4, the third one-way valve 5 and the fourth one-way valve 6 are connected to the pump body 103 of the single-cylinder rotor pump 1;

[0033] The transmission mechanism 2 connects the single-cylinder rotor pump 1 with the first one-way valve 3 , the second one-way valve 4 , the third one-way valve 5 and the fourth one-way valve 6 .

[0034] In a specific embodiment of the present invention, see Figure 1-4 The single-cylinder rotor pump 1 includes a first bearing seat 101, a first end cover 102, a pump body 103, a rotor 104, an eccentric shaft 105, a second end cover 106 and a second bearing seat 107, an edge arc seal 108, an O-ring 109 and an inner gear ring 1010;

[0035] The first bearing seat 101 is connected to the first end cover 102, and the first end cover 102 is connected to the pump body 103;

[0036] The second end cover 106 is mounted on the other side of the pump body 103, and the second bearing seat 107 is mounted on the second end cover 106;

[0037] The rotor 104 is installed in the pump body 103 , the eccentric shaft 105 is installed in the rotor 104 , and two sides of the eccentric shaft 105 are respectively connected to the first bearing seat 101 and the second bearing seat 107 through bearings.

[0038] In a specific embodiment of the present invention, see Figure 1-4 , the transmission mechanism 2 includes a driving gear 201, a transition gear 202 and a driving gear 203;

[0039] The driving gear 201 is meshed with the transition gear 202, and the transition gear 202 is meshed with the driving gear 203;

[0040] The driving gear 201 is mounted on the eccentric shaft 105, the transition gear 202 is mounted on the second end cover 106, and the driving gear 203 is mounted on the valve core;

[0041] The transmission ratio from the driving gear 201 to the drive gear 203 is 2:1.

[0042] In a specific embodiment of the present invention, see Figure 1-4 , and also includes a first valve core 7, a second valve core 8, a third valve core 9, and a fourth valve core 10; the first valve core 7, the second valve core 8, the third valve core 9, and the fourth valve core 10 have the same structure, and sealing ring grooves 701 are provided at both ends of the first valve core 7, and a valve port 702 is provided in the middle.

[0043] In a specific embodiment of the present invention, see Figure 1-4 , side arc seals 108 and O-rings 109 are installed on both sides of the rotor 104; three corners of the side arc seal 108 are provided with slots; an inner gear ring 1010 is installed inside the rotor 104, and the inner gear ring 1010 is meshed with the outer gear on the second bearing seat 107

[0044] In a specific embodiment of the present invention, see Figure 1-4 In the specific implementation process, the O-ring 109 and the edge arc seal 108 are first installed on both sides of the rotor 104, the eccentric part of the eccentric shaft 105 is installed in the rotor 104, and radial sealing strips are installed on the three corners of the rotor 104. A spring is provided at the bottom of the radial sealing strip to pop it out. There are grooves on the three corners of the edge arc seal 108, and a part of the radial sealing strip is inserted into the groove of the edge arc seal 108. The first end cover 102 and the second end cover 106 are respectively installed on both sides of the pump body 103, and a bearing is installed in the first bearing seat 101. One end of the eccentric shaft 105 is installed in the bearing of the first bearing seat 101, and the other end of the eccentric shaft 105 is installed in the bearing of the second bearing seat 107. The external gear structure on the second bearing seat 107 is meshed with the inner gear ring 1010.

[0045] The first one-way valve 3, the second one-way valve 4, the third one-way valve 5 and the fourth one-way valve 6 are installed on the four water inlets and outlets of the pump body 103. The opening and closing of the valve cores of the first one-way valve 3, the second one-way valve 4, the third one-way valve 5 and the fourth one-way valve 6 are controlled by the transmission mechanism 2. The transmission mechanism 2 includes a driving gear 201, a transition gear 202 and a driving gear 203. The transmission ratio from the driving gear 201 to the driving gear 203 is 2:1. A first valve core 7 is installed in the first one-way valve 3, a second valve core 8 is installed in the second one-way valve 4, and a third valve core 9 is installed in the fourth one-way valve 6. A third valve core 9 is installed in the one-way valve 5, and a fourth valve core 10 is installed in the fourth one-way valve 6; a driving gear is installed on each valve core, sealing ring grooves 701 are opened at both ends of the first valve core 7, and a valve port 702 is opened in the middle; the initial installation position of the rotor 104 is that one of the corners is vertically facing upward, thereby determining the initial installation positions of the four valve cores; assuming that the rotor 104 rotates clockwise, the valve core 7 is in a semi-open state, the valve core 8 is in a state about to open, the valve core 9 is in a state about to close, and the valve core 10 is in a semi-closed state.

[0046] 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. A single-cylinder rotor pump with a rotary one-way valve, characterized in that: It includes: a single-cylinder rotor pump, a transmission mechanism, a first one-way valve, a second one-way valve, a third one-way valve, and a fourth one-way valve; The first one-way valve, the second one-way valve, the third one-way valve and the fourth one-way valve are connected to the pump body of the single-cylinder rotor pump; The eccentric shaft of the single-cylinder rotor pump is connected to the driving gear of the transmission mechanism; The driving gear of the transmission mechanism is connected to the valve cores of the first one-way valve, the second one-way valve, the third one-way valve and the fourth one-way valve; The driving gear of the transmission mechanism is transmission-connected with the driving gear.

2. The single-cylinder rotor pump with a rotary check valve according to claim 1, characterized in that: The single-cylinder rotor pump comprises a first bearing seat, a first end cover, a pump body, a rotor, an eccentric shaft, a second end cover and a second bearing seat; The first bearing seat is connected to the first end cover, and the first end cover is connected to the pump body; The second end cover is mounted on the other side of the pump body, and the second bearing seat is mounted on the second end cover; The rotor is installed in the pump body, the eccentric shaft is installed in the rotor, and two sides of the eccentric shaft are respectively connected to the first bearing seat and the second bearing seat through bearings.

3. The single-cylinder rotor pump with a rotary check valve according to claim 1, characterized in that: The transmission mechanism includes a driving gear, a transition gear and a drive gear; The driving gear is meshed with the transition gear, and the transition gear is meshed with the driving gear; The driving gear is mounted on the eccentric shaft, the transition gear is mounted on the second end cover of the single-cylinder rotor pump, and the driving gear is mounted on the valve core.

4. The single-cylinder rotor pump with a rotary check valve according to claim 1, characterized in that: It also includes a first valve core, a second valve core, a third valve core, and a fourth valve core; the first valve core, the second valve core, the third valve core, and the fourth valve core have the same structure, sealing ring grooves are provided at both ends of the first valve core, and a valve port is provided in the middle.

5. The single-cylinder rotor pump with a rotary check valve according to claim 2, characterized in that: Arc seals and O-rings are installed on both sides of the rotor, and an inner gear ring is installed inside the rotor, and the inner gear ring is meshed with the outer gear on the second bearing seat.

6. The single-cylinder rotor pump with a rotary check valve according to claim 5, characterized in that: The edge arc seal is triangular in shape, and three corners are provided with clamping grooves.

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