Rotor pump

Abstract

The utility model discloses a rotor pump, and belongs to the technical field of rotor pumps. The device mainly comprises a housing; the transmission mechanism is mounted in the housing, and the transmission mechanism comprises a main shaft and an auxiliary shaft; the pump body is mounted on one side of the housing; the driving mechanism is mounted in the pump body; the rotor is arranged in the pump body; the mounting cavity is arranged in the rotor; the mounting plate is mounted in the mounting cavity; and the fixing bolt is mounted on the mounting plate. According to the rotor pump, fixed connection is achieved through the fixing bolts, when the temperature changes, the gap change between the rotors is within a controllable range, and therefore the effect that scratching and even clamping are prevented to different degrees is achieved.

Description

Technical Field

[0001] This application relates to the technical field of rotor pumps, and specifically to a rotor pump. Background Art

[0002] A rotor pump is a pump that changes the working volume through the relative movement between the rotor and the pump body, thereby increasing the energy of the liquid. It belongs to a rotary positive displacement pump and has a positive displacement property, and its flow rate does not change with the back pressure.

[0003] For example, the patent with the publication number CN212690327U discloses a rotor pump. In this patent, since both the first mating surface and the second mating surface are stepped surface structures, a concave groove portion will be formed on the first mating surface, and a convex block portion will be formed on the second mating surface. Therefore, when the first mating surface and the second mating surface are assembled together, the mounting plate can be as close as possible to the gearbox, thereby reducing the distance between the two, so that the short shaft body can penetrate into the pump body with a shorter length.

[0004] In the implementation process of the above patent, in order to improve efficiency, an existing rotor pump often sets a temperature at which the gap between the rotors is controllable. However, below this temperature, the rotor gap will become larger and the efficiency will decrease, and above this temperature, the rotor gap will decrease, resulting in rubbing or even jamming.

[0005] Therefore, it is necessary to provide a rotor pump to solve the above problems.

[0006] It should be noted that the above information disclosed in this background art section is only used to understand the background art of the concept of this application, and therefore, it may include information that does not constitute the prior art. Summary of the Invention

[0007] Based on the above problems existing in the prior art, the problem to be solved by this application is: to provide a rotor pump to solve the problem that when the temperature is lower or higher than the set temperature, the rotor gap will change accordingly, resulting in rubbing or even jamming.

[0008] The technical solution adopted by this application to solve its technical problems is: a rotor pump, comprising:

[0009] A housing;

[0010] A transmission mechanism, which is installed inside the housing, and the transmission mechanism is used to transmit power for the entire device. The transmission mechanism includes a main shaft and a sub-shaft;

[0011] A pump body, which is installed on one side of the housing;

[0012] A driving mechanism, which is installed inside the pump body, and the driving mechanism is used to realize the function of conveying materials;

[0013] A rotor, which is installed inside the pump body;

[0014] An installation cavity, which is arranged inside the rotor;

[0015] An installation plate, which is installed inside the installation cavity;

[0016] Fixing bolts, which are installed on the installation plate.

[0017] Furthermore, a base is fixedly arranged at the lower end of the housing.

[0018] Furthermore, the transmission mechanism includes multiple sets of tapered bearings fixedly arranged inside the housing. The inside of the tapered bearings is fixedly connected to the main shaft. One end of the main shaft penetrates through the housing and extends to the outside. The outside of the auxiliary shaft is also sleeved with the tapered bearings.

[0019] Furthermore, a first gear is fixedly sleeved at the position of one end of the main shaft inside the housing. A second gear is fixedly arranged at one end of the auxiliary shaft. The second gear meshes with the first gear. Among them, the main shaft is made of heat-treatable material.

[0020] Furthermore, feeding ports are fixedly arranged on both sides of the pump body. A front seal cover is fixedly arranged on the side of the pump body far away from the housing. Among them, the inside of the pump body is processed by / L, and the rotor is made of alloy.

[0021] Furthermore, multiple sets of threaded holes are formed on the installation plate;

[0022] A sealing shaft is rotatably arranged at the connection between the main shaft and the auxiliary shaft and the pump body. Threaded holes are correspondingly formed at the output ends of the main shaft and the auxiliary shaft.

[0023] Furthermore, a sealing cover is detachably arranged at the other end of the installation cavity. The sealing cover is arranged in the form of a recessed shaft cap. The outside of the sealing cover is covered with a PTFE material cover plate + an EPDM sealing ring.

[0024] Furthermore, a buffer mechanism is detachably arranged at the lower end of the base. The buffer mechanism includes a mounting seat detachably arranged at the lower end of the base. Grooves are formed at both ends of the mounting seat. A positioning bolt is threadedly connected to the upper end of the mounting seat.

[0025] Furthermore, shock-absorbing components are fixedly arranged at both ends of the mounting seat. The shock-absorbing components include multiple sets of telescopic rods fixedly arranged at both ends of the mounting seat;

[0026] The telescopic rod includes a first rod fixedly arranged at both ends of the mounting seat, and a second rod slidably arranged outside the first rod. A spring is sleeved outside the telescopic rod.

[0027] One end of the second rod is fixedly connected with a fixing plate, and a fixing seat is fixedly arranged at the bottom end of the fixing plate.

[0028] The beneficial effect of this application is that a rotor pump provided by this application achieves the effect of keeping the gap change between the rotors within a controllable range when the temperature changes by using fixed bolts for fixed connection, thereby preventing rubbing and even jamming to different degrees.

[0029] In addition to the purposes, features and advantages described above, this application has other purposes, features and advantages. The following will refer to the drawings for a further detailed description of this application. Brief Description of the Drawings

[0030] The specification drawings forming a part of this application are used to provide a further understanding of this application. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation to this application. In the drawings:

[0031] Figure 1 is an overall schematic diagram of a rotor pump in this application;

[0032] Figure 2 is an exploded sectional view of a rotor pump in this application;

[0033] Figure 3 is Figure 2 a schematic diagram of the transmission mechanism in

[0034] Figure 4 is Figure 2 a schematic diagram of the driving mechanism in

[0035] Figure 5 is Figure 1 a schematic diagram of the buffer mechanism in

[0036] Figure 6 is Figure 5 a schematic diagram of the shock absorption component in

[0037] Among them, the reference numerals in the drawings:

[0038] 1. Base; 2. Housing; 3. Front cover; 4. Feeding port; 6. Transmission mechanism; 7. Pump body; 8. Driving mechanism; 10. Sealing shaft; 61. First gear; 60. Countershaft; 63. Main shaft; 64. Taper bearing; 65. Second gear; 80. Sealing cover; 81. Fixing bolt; 82. Rotor; 83. Installation cavity; 9. Buffer mechanism; 90. Mounting seat; 91. Positioning bolt; 92. Shock-absorbing assembly; 922. Telescopic rod; 923. Spring; 924. Fixed plate; 925. Fixed seat; 84. Sealing ring; 85. Mounting plate. Detailed implementation manners

[0039] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0040] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0041] As Figures 1 - 3 shown, the present application provides a rotor pump, including a base 1 and a housing 2 fixedly arranged at the upper end of the base 1. A transmission mechanism 6 is fixedly arranged inside the housing 2, and the transmission mechanism 6 is used to transmit power for the entire device.

[0042] The transmission mechanism 6 includes a plurality of sets of taper bearings 64 fixedly arranged inside the housing 2, and the taper bearings 64 are used to reduce friction and wear during rotation, thereby extending the service life.

[0043] At the same time, a main shaft 63 is fixedly arranged inside the taper bearing 64. The main shaft 63 is made of 2205 material that can be heat-treated. The main shaft 63 is used to transmit power through rotation to maintain the operation of the entire device, and one end of the main shaft 63 penetrates through the housing 2 and extends to the outside, so as to be fixedly connected to an external power mechanism, thereby transmitting power.

[0044] And a first gear 61 is fixedly sleeved at a position of one end of the main shaft 63 inside the housing 2. At the same time, a countershaft 60 is rotatably arranged at one end of the housing 2 far from the main shaft 63. A taper bearing 64 is also sleeved outside the countershaft 60 to extend the service life of the countershaft 60.

[0045] At the same time, a second gear 65 is fixedly arranged at one end of the countershaft 60. The second gear 65 meshes with the first gear 61. Thus, when the external power mechanism drives the main shaft 63 to drive the second gear 65 to rotate through the first gear 61, the countershaft 60 will rotate accordingly, facilitating the effective transmission of power and ensuring that the device can operate at a predetermined speed and direction;

[0046] As Figures 1 - 4 shown, a pump body 7 is fixedly arranged on one side of the housing 2. The pump body 7 is used to provide a stable operating environment for each component inside the pump. At the same time, material inlets 4 are fixedly arranged on both sides of the pump body 7. The material inlets 4 are used for importing and discharging materials;

[0047] And a front cover 3 is fixedly arranged on the side of the pump body 7 away from the housing 2. The front cover 3 is used to maintain the internal pressure stability of the pump body 7, prevent material leakage, and ensure the efficient operation of the pump body 7;

[0048] At the same time, a driving mechanism 8 is rotatably arranged inside the pump body 7. The driving mechanism 8 is used to realize the function of material transportation;

[0049] The driving mechanism 8 includes two groups of rotors 82 rotatably arranged inside the pump body 7. The gap between the two groups of rotors 82 is controlled within 0.2 - 0.25 mm, thus alleviating the problem of low-viscosity material leakage at the gap during transportation to different degrees;

[0050] It should be noted that the inside of the pump body 7 is precision machined with 304 / 316L, and the rotor 82 is made of 808 alloy. However, the thermal expansion coefficient of 304 / 316L is greater than that of 808 alloy. The inside of the pump body 7 can dissipate heat, so the temperature is lower. The rotor cannot dissipate heat in the material, so the temperature is higher, in order to achieve the purpose of gap balance after expansion.

[0051] And an installation cavity 83 is opened at the middle position on the rotor 82. An installation plate 85 is fixedly arranged inside the installation cavity 83. Multiple threaded holes (not marked in the figure) are opened on the installation plate 85, and fixing bolts 81 are fixedly arranged on the threaded holes;

[0052] At the same time, the output ends of the main shaft 63 and the countershaft 60 penetrate through the pump body 7 and extend to the inside. And a sealing shaft 10 is rotatably arranged at the connection between the main shaft 63 and the countershaft 60 and the pump body 7. The sealing shaft 10 is used to prevent material leakage;

[0053] And threaded holes (not marked in the figure) are correspondingly opened at the output ends of the main shaft 63 and the countershaft 60. Thus, the main shaft 63 and the countershaft 60 can be fixedly connected to the two groups of rotors 82 through the fixing bolts 81;

[0054] It should be noted that the output ends of the main shaft 63 and the auxiliary shaft 60 are connected to the rotor 82 end to end, so that a ring structure cannot be formed, greatly increasing the deformation amount of the rotor 82 under pressure, and thus achieving the purpose of reducing the thermal expansion deformation amount of the rotor 82;

[0055] When the temperature rises, the main shaft 63 and the auxiliary shaft 60 are fixedly connected to the two groups of rotors 82 through the fixing bolts 81, so that a connection method of penetrating through is not required, and a ring structure cannot be formed at the connection of the rotors 82, and thus the gap change between the rotors 82 is within a controllable range, preventing the occurrence of rubbing or even jamming to different degrees;

[0056] At the same time, a sealing cover 80 is detachably arranged at the other end of the installation cavity 83. The sealing cover 80 is provided with a recessed shaft cap, and a PTFE material cover plate + EPDM sealing ring 84 is covered outside, so as to prevent materials from entering the rotor 82 and causing pollution;

[0057] Such as Figure 1 and Figures 5 - 6 As shown, in order to prevent the loosening of the vibration fastener structural components during operation, resulting in loose connection or leakage of the internal sealing components, thereby affecting the sealing performance of the equipment, a buffer mechanism 9 is detachably arranged at the lower end of the base 1;

[0058] The buffer mechanism 9 includes a mounting seat 90 detachably arranged at the lower end of the base 1. Grooves (not marked in the figure) are opened at both ends of the mounting seat 90 for clamping the base 1. At the same time, a positioning bolt 91 is threadedly connected to the upper end of the mounting seat 90, and the positioning bolt 91 is used when the base 1 is clamped and fixed in the groove;

[0059] And shock absorption components 92 are fixedly arranged at both ends of the mounting seat 90. The shock absorption components 92 are used to relieve the vibration occurring during operation. The shock absorption components 92 include multiple groups of telescopic rods 922 fixedly arranged at both ends of the mounting seat 90;

[0060] The telescopic rod 922 includes a first rod fixedly arranged at both ends of the mounting seat 90 and a second rod slidably arranged outside the first rod. When vibration occurs during operation, the first rod can slide inside the second rod to absorb part of the vibration energy. At the same time, a spring 923 is sleeved outside the telescopic rod 922. When vibration occurs, the spring 923 will be compressed or stretched to relieve the vibration energy. As the vibration weakens, the spring 923 will gradually return to its original shape;

[0061] At the same time, a fixing plate 924 is fixedly connected to one end of the second rod, and a fixing seat 925 is fixedly arranged at the bottom end of the fixing plate 924. The fixing seat 925 is used for connecting with external fixing parts;

[0062] Before the device runs, the base 1 can be snapped into the groove of the mounting base 90, fixed by the positioning bolt 91, and finally the fixing base 925 is fixedly connected to the external fixing member;

[0063] When the device vibrates during operation, the spring 923 in the shock-absorbing assembly 92 starts to work, absorbs the vibration energy by compression or stretching, and the telescopic rod 922 expands and contracts with the deformation of the spring 923, further helping to absorb and disperse the vibration energy, so as to achieve the purpose of shock absorption and buffering during operation.

[0064] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A rotor pump, characterized in that: Comprising: Housing (2); Transmission mechanism (6), which is installed inside the housing (2), and the transmission mechanism (6) is used to transmit power for the entire device. The transmission mechanism (6) includes a main shaft (63) and a sub-shaft (60); Pump body (7), which is installed on one side of the housing (2); Drive mechanism (8), which is installed inside the pump body (7), and the drive mechanism (8) is used to achieve the function of conveying materials; Rotor (82), which is installed inside the pump body (7); Installation cavity (83), which is arranged inside the rotor (82); Installation plate (85), which is installed inside the installation cavity (83); Fixing bolts (81), which are installed on the installation plate (85).

2. The rotor pump according to claim 1, characterized in that: A base (1) is fixedly arranged at the lower end of the housing (2).

3. A rotor pump according to claim 1, characterized in that: The transmission mechanism (6) includes multiple groups of tapered bearings (64) fixedly arranged inside the housing (2). The inside of the tapered bearings (64) is fixedly connected to the main shaft (63). One end of the main shaft (63) penetrates through the housing (2) and extends to the outside. The outside of the sub-shaft (60) is also sleeved with the tapered bearings (64).

4. A rotor pump according to claim 1, characterized in that: A first gear (61) is fixedly sleeved at a position of one end of the main shaft (63) inside the housing (2). A second gear (65) is fixedly arranged at one end of the sub-shaft (60). The second gear (65) meshes with the first gear (61), and the main shaft (63) is made of heat-treatable 2205 material.

5. A rotor pump according to claim 1, characterized in that: Feeding ports (4) are fixedly arranged on both sides of the pump body (7). A front cover (3) is fixedly arranged on the side of the pump body (7) away from the housing (2). The inside of the pump body (7) is processed with 304 / 316L, and the rotor (82) is made of 808 alloy.

6. A rotor pump according to claim 1, characterized in that: Multiple groups of threaded holes are formed on the installation plate (85); Sealing shafts (10) are rotatably arranged at the connection positions of the main shaft (63) and the sub-shaft (60) with the pump body (7). Threaded holes are correspondingly formed at the output ends of the main shaft (63) and the sub-shaft (60).

7. A rotor pump according to claim 1, characterized in that: A sealing cover (80) is detachably arranged at the other end of the installation cavity (83). The sealing cover (80) is provided with a recessed shaft cap, and a PTFE material cover plate + EPDM sealing ring (84) is covered on the outside of the sealing cover (80).

8. A rotor pump according to claim 2, characterized in that: A buffer mechanism (9) is detachably arranged at the lower end of the base (1). The buffer mechanism (9) includes a mounting seat (90) detachably arranged at the lower end of the base (1). Grooves are formed at both ends of the mounting seat (90), and positioning bolts (91) are threadedly connected to the upper end of the mounting seat (90).

9. A rotor pump according to claim 8, characterized in that: Shock-absorbing components (92) are fixedly arranged at both ends of the mounting seat (90). The shock-absorbing components (92) include multiple groups of telescopic rods (922) fixedly arranged at both ends of the mounting seat (90); The telescopic rod (922) includes a first rod fixedly arranged at both ends of the mounting base (90), and a second rod slidably arranged outside the first rod. A spring (923) is sleeved outside the telescopic rod (922); One end of the second rod is fixedly connected with a fixing plate (924), and a fixing seat (925) is fixedly arranged at the bottom end of the fixing plate (924).

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