Rotor phase clearance adjusting structure of rotor pump

Abstract

The utility model discloses a rotor phase clearance adjusting structure of a rotor pump, which comprises a mounting casing, a pump casing, a transmission shaft, a first rotor, a driven shaft, a second rotor and a linkage component, a first bevel gear is connected with the transmission shaft through a flat key, a second bevel gear is connected with the driven shaft through a flat key, and the second bevel gear is meshed with the first bevel gear. The second bevel gear slides along the axis of the first bevel gear and is used for adjusting the phase difference between the first rotor and the second rotor, and the locking assembly is arranged outside the transmission shaft and the driven shaft and used for locking the second bevel gear and the first bevel gear. The transmission shaft, the driven shaft and the linkage assembly are used in a matched mode, the position difference between the first bevel gear and the second bevel gear is adjusted through the first adjusting shaft sleeve and the second adjusting shaft sleeve, the phase difference between the transmission shaft and the driven shaft can be adjusted, and therefore the stability of matched use of the first rotor and the second rotor is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of rotor pumps, and in particular to a rotor phase gap adjustment structure for a rotor pump. Background Technology

[0002] A rotary pump is a positive displacement pump that changes the working volume by the relative motion between a rotating rotor and a stationary pump body, thereby achieving liquid transport. The working principle of a rotary pump is based on positive displacement, that is, the centrifugal force generated by the rotation of the rotor accelerates the liquid and outputs it.

[0003] A rotary pump consists of a pump casing, a pair of rotors, a driven shaft, a transmission shaft, and a linkage mechanism. The linkage mechanism is usually composed of two gears, which cause the driven shaft and the transmission shaft to rotate synchronously in opposite directions, thereby driving the pair of rotors to work together. When installing the gears, a groove is usually made on the outside of the driven shaft and the transmission shaft, and a flat key is inserted into the inside of the groove. The flat key engages with the gear, which can ensure the stability of the gear installed on the driven shaft and the transmission shaft.

[0004] However, during the production of driven shafts and drive shafts, errors in the opening of the mounting grooves for the flat key, or errors in the installation of the rotor with the driven shaft or drive shaft, can lead to a phase difference between the rotors at the ends of the driven shaft and drive shaft. This means that the phase gap between the two rotors is not up to standard, and in some cases, the rotor or gear cannot be installed, resulting in certain defects. Utility Model Content

[0005] The purpose of this invention is to provide a rotor phase gap adjustment structure for a rotary pump to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rotor phase gap adjustment structure for a rotary pump, comprising:

[0007] The mounting housing and the pump housing are mounted on one side of the mounting housing;

[0008] A drive shaft and a first rotor, wherein the drive shaft is rotatably mounted inside the mounting housing, and the first rotor is mounted on one end of the drive shaft;

[0009] Driven shaft and second rotor, the driven shaft is rotatably mounted inside the mounting housing, the second rotor is mounted at one end of the driven shaft, the first rotor and the second rotor cooperate with the pump housing to convey materials;

[0010] A linkage assembly, disposed on one side of the mounting housing, is used to cause the drive shaft and the driven shaft to rotate in linkage. The linkage assembly includes:

[0011] The first helical gear is slidably engaged with the outside of the drive shaft;

[0012] The second helical gear is slidably engaged with the outer wall of the driven shaft. The second helical gear meshes with the first helical gear. The second helical gear slides along the axis of the first helical gear to adjust the phase difference between the first rotor and the second rotor.

[0013] A locking assembly, disposed outside the drive shaft and the driven shaft, is used to lock the second helical gear and the first helical gear.

[0014] Preferably, the locking component includes:

[0015] The first adjusting bushing is sleeved on the outside of the transmission shaft, and one end of the first adjusting bushing is pressed and fitted against the first helical gear;

[0016] The second adjusting sleeve is sleeved on the outside of the driven shaft. One end of the second adjusting sleeve is pressed and fitted against the second helical gear. The width difference between the first adjusting sleeve and the second adjusting sleeve is used to limit the position difference between the first helical gear and the second helical gear.

[0017] Preferably, the locking component further includes:

[0018] External threads are formed on the outside of the drive shaft and driven shaft;

[0019] The first locking nut is threaded into the drive shaft via an external thread.

[0020] The second locking nut is threaded onto the driven shaft via an external thread.

[0021] Preferably, the first locking nut is pressed against the side of the first helical gear opposite to the first adjusting bushing, and the second locking nut is pressed against the side of the second helical gear opposite to the second adjusting bushing. Both the first locking nut and the second locking nut are located on the side of the mounting housing opposite to the pump housing.

[0022] Preferably, the linkage component further includes:

[0023] Keyways are respectively formed on the outer walls of the drive shaft and the driven shaft;

[0024] The flat key is slidably engaged inside the keyway. The inner walls of the first helical gear and the second helical gear are both provided with sliding grooves that match the flat key.

[0025] Preferred options also include:

[0026] A protective end shell is installed on the other side of the mounting housing and is used to shield and protect the linkage components; a shaft seal is sleeved between the drive shaft and the protective end shell.

[0027] Preferably, the mounting housing is internally provided with a mounting assembly for limiting the movement of the drive shaft and the driven shaft, the mounting assembly comprising:

[0028] Mounting bushings are respectively fixedly sleeved onto the outer walls of the drive shaft and the driven shaft;

[0029] The limiting bearings are respectively sleeved on the outer walls of the drive shaft and the driven shaft, and the sides of the inner ring of the limiting bearings are respectively in contact with the mounting sleeve and the first adjusting sleeve.

[0030] Preferably, the mounting components further include:

[0031] The first fixed flange is installed on one side of the mounting housing and is used to lock and limit the limiting bearing at one end of the mounting bushing.

[0032] The second fixed flange is installed on the other side of the mounting housing and is used to lock and limit the limit bearing at the other end of the mounting bushing.

[0033] The technical effects and advantages of this utility model are as follows:

[0034] This utility model utilizes the cooperative use of a drive shaft, a driven shaft, and a linkage assembly. The linkage assembly includes a first helical gear, a second helical gear, a first adjusting sleeve, a second adjusting sleeve, a first locking nut, and a second locking nut. The first and second helical gears not only enable the drive shaft and the driven shaft to rotate synchronously in opposite directions, but also, by adjusting the position difference between the first and second helical gears using the first and second adjusting sleeves, the phase difference between the drive shaft and the driven shaft can be adjusted, thereby ensuring the stability of the first rotor and the second rotor when used together. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the exploded structure of this utility model.

[0036] Figure 2 This is a schematic diagram of the cross-sectional structure of the mounting housing of this utility model.

[0037] Figure 3 This is a schematic diagram of the assembly structure of the first and second helical gears of this utility model.

[0038] Figure 4 This is a schematic diagram of the overall structure of the drive shaft and driven shaft of this utility model.

[0039] Figure 5 This is a schematic diagram of the overall structure of the first and second helical gears of this utility model.

[0040] Figure 6 This is a schematic diagram of the overall cross-sectional structure of this utility model.

[0041] In the diagram: 1. Mounting housing; 2. Pump housing; 3. Drive shaft; 4. First rotor; 5. Driven shaft; 6. Second rotor; 7. Mounting assembly; 71. Mounting bushing; 72. Limit bearing; 73. First fixed flange; 74. Second fixed flange; 8. Linkage assembly; 81. First helical gear; 82. Second helical gear; 83. First adjusting bushing; 84. Second adjusting bushing; 85. External thread; 86. First locking nut; 87. Second locking nut; 9. Protective end cover. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] Example 1

[0044] This utility model provides, for example Figure 1-6 The rotor phase clearance adjustment structure of the rotary pump shown includes a mounting housing 1, a pump housing 2, a drive shaft 3, a first rotor 4, a driven shaft 5, a second rotor 6, and a linkage assembly 8. The pump housing 2 is mounted on one side of the mounting housing 1. Figure 2 As shown, the drive shaft 3 is rotatably mounted inside the mounting housing 1. The first rotor 4 is mounted on one end of the drive shaft 3. The driven shaft 5 is rotatably mounted inside the mounting housing 1. The second rotor 6 is mounted on one end of the driven shaft 5. The first rotor 4 and the second rotor 6 cooperate with the pump housing 2 to convey materials. There is a certain effective gap between the first rotor 4 and the second rotor 6. The linkage assembly 8 is set on one side of the mounting housing 1. The linkage assembly 8 is used to make the drive shaft 3 and the driven shaft 5 rotate in linkage. The linkage assembly 8 includes a first helical gear 81, a second helical gear 82, and a locking assembly. The first helical gear 81 is slidably engaged with the outside of the drive shaft 3. The second helical gear 82 is slidably engaged with the outer wall of the driven shaft 5. The second helical gear 82 meshes with the first helical gear 81. Figure 2 and Figure 3As shown, the drive shaft 3 can drive the driven shaft 5 to rotate, thereby causing the first rotor 4 and the second rotor 6 to rotate relative to each other. The second helical gear 82 slides along the axis of the first helical gear 81 to adjust the phase difference between the first rotor 4 and the second rotor 6. The locking component is located outside the drive shaft 3 and the driven shaft 5. During the axial movement of the first helical gear 81 and the second helical gear 82, due to the helix angle between them, the relative position of the circumference of the first helical gear 81 and the second helical gear 82 will change. That is, by using the helix angle of the first helical gear 81 and the second helical gear 82, the phase relationship between the first helical gear 81 and the second helical gear 82 is changed, thereby adjusting the relative axial position of the drive shaft 3 and the driven shaft 5, thereby adjusting the phase difference between the first rotor 4 and the second rotor 6, thereby maintaining the consistency of the relative clearance between the first rotor 4 and the second rotor 6 during the operation of the equipment. The locking component is used to lock the second helical gear 82 and the first helical gear 81.

[0045] In particular, the locking assembly includes a first adjusting bushing 83 and a second adjusting bushing 84, such as Figure 5 As shown, the first adjusting sleeve 83 is sleeved on the outside of the transmission shaft 3, and one end of the first adjusting sleeve 83 is pressed and fitted against the first helical gear 81. The second adjusting sleeve 84 is sleeved on the outside of the driven shaft 5, and one end of the second adjusting sleeve 84 is pressed and fitted against the second helical gear 82. The width difference between the first adjusting sleeve 83 and the second adjusting sleeve 84 is used to limit the position difference between the first helical gear 81 and the second helical gear 82. That is, the first adjusting sleeve 83 and the second adjusting sleeve 84 are in the same position facing the mounting housing 1, so there is a certain width difference between the first adjusting sleeve 83 and the second adjusting sleeve 84. When the first helical gear 81 and the second helical gear 82 are installed, there can be a certain axial difference between the first helical gear 81 and the second helical gear 82, thereby compensating for the phase difference between the first rotor 4 and the second rotor 6.

[0046] Furthermore, the locking assembly also includes an external thread 85, a first locking nut 86, and a second locking nut 87. The two external threads 85 are located on the outside of the drive shaft 3 and the driven shaft 5. The first locking nut 86 is threadedly connected to the drive shaft 3 through the external thread 85, and the second locking nut 87 is threadedly connected to the driven shaft 5 through the external thread 85. The first locking nut 86 is pressed against the side of the first helical gear 81 away from the first adjusting bushing 83, and the second locking nut 87 is pressed against the side of the second helical gear 82 away from the second adjusting bushing 84. The first locking nut 86 and the second locking nut 87 are both located on the side of the mounting housing 1 away from the pump housing 2. Under the action of the first locking nut 86 and the second locking nut 87, the stability of the first helical gear 81 and the second helical gear 82 installed on the outside of the drive shaft 3 and the driven shaft 5 can be guaranteed.

[0047] Specifically, the linkage assembly 8 also includes keyways and a flat key. The two keyways are respectively opened on the outer walls of the drive shaft 3 and the driven shaft 5. The flat key is slidably engaged inside the keyways. The inner walls of the first helical gear 81 and the second helical gear 82 are both provided with sliding grooves that match the flat key, so that the first helical gear 81 and the second helical gear 82 rotate synchronously with the drive shaft 3 and the driven shaft 5, respectively. It also includes a protective end shell 9 and a shaft seal. The protective end shell 9 is installed on the other side of the mounting housing 1. The protective end shell 9 is used to shield and protect the linkage assembly 8. The shaft seal is sleeved between the drive shaft 3 and the protective end shell 9. The protective end shell 9 can shield and protect the first helical gear 81 and the second helical gear 82.

[0048] Example 2

[0049] Based on Example 1, such as Figure 1 As shown, the mounting housing 1 is internally equipped with a mounting assembly 7 for limiting the position of the drive shaft 3 and the driven shaft 5. The mounting assembly 7 includes mounting sleeves 71 and limiting bearings 72. The mounting sleeves 71 are fixedly fitted onto the outer walls of the drive shaft 3 and the driven shaft 5, respectively. The limiting bearings 72 are fitted onto the outer walls of the drive shaft 3 and the driven shaft 5, respectively. The inner rings of each limiting bearing 72 are respectively in contact with the two mounting sleeves 71, the first adjusting sleeve 83, and the second adjusting sleeve 84, thereby ensuring the stability of the position of the first adjusting sleeve 83 and the second adjusting sleeve 84 facing the mounting housing 1, and without affecting the rotation of the drive shaft 3 and the driven shaft 5. Component 7 also includes a first fixing flange 73 and a second fixing flange 74. The first fixing flange 73 is installed on one side of the mounting housing 1 and is used to lock and limit the limiting bearing 72 at one end of the mounting sleeve 71. The second fixing flange 74 is installed on the other side of the mounting housing 1 and is used to lock and limit the limiting bearing 72 at the other end of the mounting sleeve 71. Thus, by locking the two limiting bearings 72 with the first fixing flange 73 and the second fixing flange 74, the two limiting bearings 72 can limit the mounting sleeve 71, thereby ensuring the stability of the installation of the drive shaft 3 and the driven shaft 5. The assembly is as follows: Figure 6 As shown.

[0050] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rotor phase clearance adjustment structure for a rotary pump, characterized in that, include: Mounting housing (1) and pump housing (2), wherein the pump housing (2) is mounted on one side of mounting housing (1); A drive shaft (3) and a first rotor (4) are provided, wherein the drive shaft (3) is rotatably mounted inside the mounting housing (1), and the first rotor (4) is mounted on one end of the drive shaft (3); Driven shaft (5) and second rotor (6), the driven shaft (5) is rotatably mounted inside the mounting housing (1), the second rotor (6) is mounted at one end of the driven shaft (5), the first rotor (4) and the second rotor (6) cooperate with the pump housing (2) to convey materials; A linkage assembly (8) is disposed on one side of the mounting housing (1). The linkage assembly (8) is used to cause the drive shaft (3) and the driven shaft (5) to rotate in linkage. The linkage assembly (8) includes: The first helical gear (81) is slidably engaged with the outside of the transmission shaft (3); The second helical gear (82) is slidably engaged with the outer wall of the driven shaft (5). The second helical gear (82) meshes with the first helical gear (81). The second helical gear (82) slides along the axis of the first helical gear (81) to adjust the phase difference between the first rotor (4) and the second rotor (6). A locking assembly is disposed outside the drive shaft (3) and the driven shaft (5), the locking assembly being used to lock the second helical gear (82) and the first helical gear (81).

2. The rotor phase clearance adjustment structure for a rotary pump according to claim 1, characterized in that, The locking component includes: The first adjusting bushing (83) is sleeved on the outside of the transmission shaft (3), and one end of the first adjusting bushing (83) is pressed and fitted against the first helical gear (81); The second adjusting sleeve (84) is sleeved on the outside of the driven shaft (5). One end of the second adjusting sleeve (84) is pressed and fitted with the second helical gear (82). The width difference between the first adjusting sleeve (83) and the second adjusting sleeve (84) is used to limit the position difference between the first helical gear (81) and the second helical gear (82).

3. The rotor phase clearance adjustment structure for a rotary pump according to claim 2, characterized in that, The locking component also includes: External threads (85) are formed on the outside of the drive shaft (3) and the driven shaft (5); The first locking nut (86) is threadedly connected to the drive shaft (3) via an external thread (85); The second locking nut (87) is threadedly connected to the driven shaft (5) via an external thread (85).

4. The rotor phase clearance adjustment structure of a rotary pump according to claim 3, characterized in that, The first locking nut (86) is pressed against the side of the first helical gear (81) away from the first adjusting bushing (83), and the second locking nut (87) is pressed against the side of the second helical gear (82) away from the second adjusting bushing (84). The first locking nut (86) and the second locking nut (87) are both located on the side of the mounting housing (1) away from the pump housing (2).

5. The rotor phase clearance adjustment structure for a rotary pump according to claim 1, characterized in that, The linkage component (8) also includes: Keyways are respectively opened on the outer walls of the drive shaft (3) and the driven shaft (5); The flat key is slidably engaged inside the keyway. The inner walls of the first helical gear (81) and the second helical gear (82) are both provided with sliding grooves that match the flat key.

6. The rotor phase clearance adjustment structure of a rotary pump according to claim 1, characterized in that, Also includes: Protective end shell (9), the protective end shell (9) is installed on the other side of the mounting housing (1), the protective end shell (9) is used to shield and protect the linkage component (8); A shaft seal is fitted between the drive shaft (3) and the protective end shell (9).

7. The rotor phase clearance adjustment structure of a rotary pump according to claim 2, characterized in that, The mounting housing (1) is internally provided with a mounting assembly (7) for limiting the movement of the drive shaft (3) and the driven shaft (5), the mounting assembly (7) comprising: Mounting bushing (71), which is fixedly sleeved on the outer wall of the drive shaft (3) and the driven shaft (5); limiting bearing (72), which is sleeved on the outer wall of the drive shaft (3) and the driven shaft (5), and the side of the inner ring of the limiting bearing (72) is in contact with the mounting bushing (71) and the first adjusting bushing (83).

8. The rotor phase clearance adjustment structure of a rotary pump according to claim 7, characterized in that, The installation component (7) also includes: The first fixed flange (73) is installed on one side of the mounting housing (1) and is used to lock and limit the limiting bearing (72) at one end of the mounting bushing (71). The second fixed flange (74) is installed on the other side of the mounting housing (1) and is used to lock and limit the limit bearing (72) at the other end of the mounting bushing (71).

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