Roots blower impeller

Abstract

The utility model relates to the technical field of blowers, and discloses a roots blower impeller, an impeller assembly, a rotating shaft assembly and an installation assembly, the installation assembly is fixedly installed in the impeller assembly, and the rotating shaft assembly is matched with the installation assembly. According to the utility model, through the arrangement of the rotating shaft assembly and the mounting assembly, a worker does not need to align the convex key and the concave key deliberately when mounting the rotating shaft body, so that the mounting convenience is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of air blower, more particularly to a roots air blower impeller. BACKGROUND

[0002] The roots air blower is a positive displacement blower, and its principle is to use two vane rotors to make relative movement in a cylinder to compress and transport gas, and it is suitable for gas transportation and pressurization system in low pressure occasions.

[0003] At present, the impeller of the roots air blower has two common forms, one is integrally formed with the rotating shaft, and the other is split with the rotating shaft and connected through the spline to transmit torque. When installing the split impeller and the rotating shaft, the male key and the female key need to be aligned. However, the precision of the male key and the female key is high, and when the rotating shaft is installed, the male key on the rotating shaft and the female key in the impeller need to be precisely aligned to be successfully installed. It is difficult for the operator to operate, and the precision is high. Therefore, it is urgent to design a roots air blower impeller to solve the above problems. SUMMARY

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a roots air blower impeller to solve the problem that the male key on the rotating shaft and the female key in the impeller need to be precisely aligned to be successfully installed when the rotating shaft is installed, and it is difficult to operate.

[0005] The utility model provides the following technical scheme: a roots air blower impeller, comprising an impeller assembly, further comprising a rotating shaft assembly and an installation assembly, the installation assembly is fixedly installed in the impeller assembly, and the rotating shaft assembly is matched with the installation assembly.

[0006] Further, the impeller assembly comprises an impeller body and a through hole, the through hole is arranged between the two ends of the impeller body, and the installation assembly comprises an installation sleeve, the installation sleeve is fixedly installed in the through hole.

[0007] Further, the rotating shaft assembly comprises a rotating shaft body and a male key, the male key is fixedly installed on the outer wall of the rotating shaft body, the installation assembly further comprises a female key, the female key is arranged between the outer wall and the inner wall of the installation sleeve, the rotating shaft body is matched with the installation sleeve, and the male key is matched with the female key.

[0008] Further, the rotating shaft assembly further comprises a ball, one end of the male key is provided with a chamfer, the ball is rotatably installed at the chamfer, the installation assembly further comprises an arc-shaped groove, one end of the installation sleeve is provided with a chamfer, the arc-shaped groove is arranged at the chamfer, the chamfer of the male key is matched with the chamfer of the installation sleeve, and the ball is matched with the arc-shaped groove.

[0009] Further, the rotating shaft assembly further comprises a sliding groove, a threaded rod, a pushing block, two sliding holes and two inserting rods, the sliding groove is arranged in the rotating shaft body, the threaded rod is movably inserted into the sliding groove, the pushing block is slidably arranged in the sliding groove and is rotatably connected with the threaded rod, the two sliding holes are arranged between the outer wall and the inner wall of the rotating shaft body, the two inserting rods are slidably arranged in the two sliding holes respectively, the two inserting rods are matched with the pushing block, the pushing block is slidably arranged between the two inserting rods, the mounting assembly further comprises two inserting holes, the two inserting holes are arranged between the outer wall and the inner wall of the mounting sleeve, the inserting rod is matched with the inserting hole, and the pushing block and the two inserting rods are made of magnetic metal and are adsorbed on the pushing block.

[0010] Further, the rotating shaft assembly further comprises two limiting grooves and two limiting blocks, the two limiting grooves are arranged in the inner wall of the sliding groove, and the two limiting blocks are fixedly arranged on the outer wall of the pushing block and slidably arranged in the two limiting grooves respectively.

[0011] Further, the mounting assembly further comprises a positioning block, and the positioning block is fixedly arranged at the end of the concave key and matched with the convex key.

[0012] The technical effects and advantages of the utility model are as follows:

[0013] During installation, the rotating shaft body is inserted into the through hole, the rotating shaft body can be conveniently inserted into the through hole because the inner diameter of the through hole is larger than the diameter of the rotating shaft body, after the rotating shaft body is inserted for a distance and contacts the mounting sleeve, the rotating shaft body slides into the mounting sleeve along the inclined surface of the chamfer because one end of the mounting sleeve is provided with the chamfer, after the rotating shaft body continues to be inserted for a distance along the inner wall of the mounting sleeve, the convex key contacts the chamfer at one end of the mounting sleeve, the chamfer at one end of the convex key and the chamfer at one end of the mounting sleeve are matched with each other, at this time, the ball is also engaged into the arc-shaped groove, at this time, the rotating shaft body is rotated and the rotating shaft body is pushed with a slightly smaller force at the same time, the convex key is rotated on the chamfer surface of the mounting sleeve, when the convex key is rotated to correspond to the concave key, the convex key is engaged into the concave key, at this time, the rotating shaft body continues to be inserted into the mounting sleeve, when the convex key contacts the positioning block after being inserted, the threaded rod is slid into the rotating shaft body, and then the pushing block is slid inward, the two inserting rods are pushed into the two inserting holes respectively, and then the rotating shaft body is fixed in the impeller body, the rotating shaft body is conveniently installed into the fan shell, the rotating shaft assembly and the mounting assembly are arranged, when the rotating shaft body is installed, the alignment of the convex key and the concave key is not necessary, and the convenience of installation is improved. ACCURATE DRAWINGS

[0014] Fig. 1 It is a whole structure schematic view of the utility model;

[0015] Fig. 2 It is a rotating shaft assembly structure schematic view of the utility model;

[0016] Fig. 3 It is the schematic view of the chute structure of the utility model;

[0017] Fig. 4 It is the enlarged schematic view of the structure of the utility model A place;

[0018] Fig. 5 It is the schematic view of the through hole structure of the utility model;

[0019] Fig. 6 It is the schematic view of the installation assembly structure of the utility model.

[0020] The figure mark is: 1, impeller assembly;101, impeller body;102, through hole;2, rotating shaft assembly;201, rotating shaft body;202, key;203, ball;204, chute;205, threaded rod;206, push block;207, sliding hole;208, plug rod;209, limiting groove;210, limiting block;3, installation assembly;301, installation sleeve;302, arc slot;303, concave key;304, jack;305, positioning block. DETAILED DESCRIPTION

[0021] The utility model will be further explained below in combination with specific embodiments, however, people skilled in the art should understand that the detailed description given in combination with the drawings is for better explanation, and the structure of the utility model is bound to exceed these limited embodiments, and for some equivalent replacement schemes or common means, the detailed description will not be described in this paper, but still belongs to the protection scope of the application.

[0022] Figs. 1-6 It is the best embodiment of the utility model, and the following will be combined with the drawings Figs. 1-6 The utility model will be further explained below in combination with specific embodiments, however, people skilled in the art should understand that the detailed description given in combination with the drawings is for better explanation, and the structure of the utility model is bound to exceed these limited embodiments, and for some equivalent replacement schemes or common means, the detailed description will not be described in this paper, but still belongs to the protection scope of the application.

[0023] A roots blower impeller, comprising an impeller assembly 1, further comprising a rotating shaft assembly 2, an installation assembly 3, the installation assembly 3 is fixedly installed in the impeller assembly 1, the rotating shaft assembly 2 is adapted with the installation assembly 3;

[0024] The impeller assembly 1 includes an impeller body 101 and a through hole 102, the through hole 102 is arranged between the two ends of the impeller body 101, and the installation assembly 3 includes an installation sleeve 301, which is fixedly installed in the through hole 102;

[0025] The rotating shaft assembly 2 includes a rotating shaft body 201 and a key 202, the key 202 is fixedly installed on the outer wall of the rotating shaft body 201, and the installation assembly 3 further includes a concave key 303, which is arranged between the outer wall and the inner wall of the installation sleeve 301, the rotating shaft body 201 is adapted with the installation sleeve 301, and the key 202 is adapted with the concave key 303;

[0026] The rotating shaft assembly 2 further comprises a ball 203, one end of the key 202 is provided with a chamfer, the ball 203 is rotatably installed at the chamfer, the mounting assembly 3 further comprises an arc-shaped slot 302, one end of the mounting sleeve 301 is provided with a chamfer, the arc-shaped slot 302 is arranged at the chamfer, the chamfer of the key 202 is matched with the chamfer of the mounting sleeve 301, and the ball 203 is matched with the arc-shaped slot 302;

[0027] The rotating shaft assembly 2 further comprises a sliding groove 204, a threaded rod 205, a pushing block 206, two sliding holes 207 and two insertion rods 208. The sliding groove 204 is arranged in the rotating shaft body 201. The threaded rod 205 is movably inserted into the sliding groove 204 in a threaded manner. The pushing block 206 is slidably installed in the sliding groove 204 and is rotationally connected with the threaded rod 205. The two sliding holes 207 are arranged between the outer wall and the inner wall of the rotating shaft body 201. The two insertion rods 208 are slidably installed in the two sliding holes 207 respectively. The two insertion rods 208 are matched with the pushing block 206. The pushing block 206 is slidably installed between the two insertion rods 208. The mounting assembly 3 further comprises two insertion holes 304. The two insertion holes 304 are arranged between the outer wall and the inner wall of the mounting sleeve 301. The insertion rod 208 is matched with the insertion hole 304. The pushing block 206 and the two insertion rods 208 are both made of magnetic metal material, and the two insertion rods 208 are adsorbed on the pushing block 206.

[0028] The rotating shaft assembly 2 further comprises two limiting grooves 209 and two limiting blocks 210. The two limiting grooves 209 are arranged in the inner wall of the sliding groove 204. The two limiting blocks 210 are fixedly installed on the outer wall of the pushing block 206. The two limiting blocks 210 are slidably installed in the two limiting grooves 209 respectively.

[0029] The mounting assembly 3 further comprises a positioning block 305. The positioning block 305 is fixedly installed at the end of the concave key 303. The positioning block 305 is matched with the key 202.

[0030] In the embodiment, when installing, the rotating shaft body 201 is inserted into the through hole 102, and since the inner diameter of the through hole 102 is larger than the diameter of the rotating shaft body 201, the rotating shaft body 201 can be conveniently inserted into the through hole 102. After the rotating shaft body 201 is inserted for a distance and contacts the mounting sleeve 301, since one end of the mounting sleeve 301 is provided with a chamfer, the rotating shaft body 201 will slide along the inclined surface of the chamfer into the mounting sleeve 301. After the rotating shaft body 201 continues to be inserted for a distance along the inner wall of the mounting sleeve 301, the key 202 will contact the chamfer at one end of the mounting sleeve 301, and the chamfer at one end of the key 202 will be in close contact with the chamfer at one end of the mounting sleeve 301. At this time, the ball 203 will also be engaged into the arc-shaped groove 302. At this time, the rotating shaft body 201 is rotated, and at the same time, the rotating shaft body 201 is pushed with a slightly smaller force, so as to drive the key 202 to rotate on the chamfer surface of the mounting sleeve 301. When the key 202 is rotated to correspond to the recessed key 303, the key 202 can be engaged into the recessed key 303. At this time, the rotating shaft body 201 will continue to be inserted into the mounting sleeve 301. When the key 202 contacts the positioning block 305 after being inserted, the threaded rod 205 is rotated to slide into the rotating shaft body 201, so as to drive the pushing block 206 to slide inward. The two insertion rods 208 are respectively pushed into the two insertion holes 304, so as to fix the rotating shaft body 201 in the impeller body 101. The rotating shaft body 201 is conveniently installed into the fan shell. Through the rotating shaft assembly 2 and the mounting assembly 3, when installing the rotating shaft body 201, the worker does not need to deliberately align the key 202 and the recessed key 303, and the convenience of installation is improved.

[0031] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to obtain equivalent embodiments. However, any simple modification, equivalent change and modification of the above embodiments without departing from the technical solution of the present application, and according to the technical essence of the present application, still belong to the protection scope of the technical solution of the present application.

Claims

1. A Roots blower impeller, comprising an impeller assembly (1), characterized in that: It also includes a shaft assembly (2) and a mounting assembly (3). The mounting assembly (3) is fixedly installed inside the impeller assembly (1), and the shaft assembly (2) and the mounting assembly (3) are compatible. The impeller assembly (1) includes an impeller body (101) and a through hole (102). The through hole (102) is opened between the two ends of the impeller body (101). The mounting assembly (3) includes a mounting sleeve (301), which is fixedly installed in the through hole (102). The rotating shaft assembly (2) includes a rotating shaft body (201) and a convex key (202). The convex key (202) is fixedly installed on the outer wall of the rotating shaft body (201). The mounting assembly (3) also includes a concave key (303). The concave key (303) is formed between the outer wall and the inner wall of the mounting sleeve (301). The rotating shaft body (201) is adapted to the mounting sleeve (301), and the convex key (202) is adapted to the concave key (303). The rotating shaft assembly (2) also includes a ball bearing (203), one end of the key (202) is chamfered, and the ball bearing (203) is rotatably mounted at the chamfer. The mounting assembly (3) also includes an arc groove (302), one end of the mounting sleeve (301) is chamfered, the arc groove (302) is opened at the chamfer, the chamfer of the key (202) matches the chamfer of the mounting sleeve (301), and the ball bearing (203) matches the arc groove (302).

2. The impeller of a Roots blower according to claim 1, characterized in that: The rotating shaft assembly (2) further includes a sliding groove (204), a threaded rod (205), a push block (206), two sliding holes (207), and two insert rods (208). The sliding groove (204) is formed inside the rotating shaft body (201). The threaded rod (205) is movably inserted into the sliding groove (204) via a thread. The push block (206) is slidably installed inside the sliding groove (204) and is rotatably connected to the threaded rod (205). The two sliding holes (207) are both formed between the outer wall and the inner wall of the rotating shaft body (201). The two insert rods (208) The two rods (208) are slidably installed in the two sliding holes (207), and both rods (208) are adapted to the push block (206). The push block (206) is slidably installed between the two rods (208). The mounting assembly (3) also includes two holes (304). The two holes (304) are opened between the outer wall and the inner wall of the mounting sleeve (301). The rods (208) are adapted to the holes (304). The push block (206) and the two rods (208) are both made of magnetic metal and the two rods (208) are adsorbed on the push block (206).

3. The impeller of a Roots blower according to claim 1, characterized in that: The rotating shaft assembly (2) also includes two limiting grooves (209) and two limiting blocks (210). The two limiting grooves (209) are both opened on the inner wall of the slide groove (204), and the two limiting blocks (210) are both fixedly installed on the outer wall of the push block (206). The two limiting blocks (210) are respectively slidably installed in the two limiting grooves (209).

4. The impeller of a Roots blower according to claim 1, characterized in that: The mounting component (3) also includes a positioning block (305), which is fixedly mounted on the end of the concave key (303) and is adapted to the convex key (202).

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