Vacuum pump spiral rotor with high-wear-resistance and anti-attrition BN composite coating

Abstract

The utility model discloses a vacuum pump spiral rotor with a highly wear-resistant and anti-attrition BN (boron nitride) composite coating, which relates to the technical field of vacuum pumps and comprises a rotor I and a rotor II which are arranged inside a vacuum pump body and penetrate through the inside of the vacuum pump body. The two ends of the first rotor and the two ends of the second rotor are rotationally connected with the vacuum pump body, and the cylindrical face of the first rotor and the cylindrical face of the second rotor are provided with replacement structures. The coating contact blocks can be conveniently replaced, so that the two coating contact blocks are in contact with each other when the spiral block I and the spiral block II rotate, and the BN composite coatings coated on the surfaces of the coating contact blocks are more convenient to replace after being abraded; the thickness condition of the two contact strips is changed, so that the gap between the coating contact block of the first spiral block and the coating contact block of the second spiral block is adjusted, and at the moment, the thickness condition of the contact strips can be adjusted according to the viscosity of fluid conveyed by the vacuum pump.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum pumps, in particular to a vacuum pump spiral rotor with a highly wear-resistant and friction-reducing BN composite coating. Background Art

[0002] The function of the vacuum pump is to generate negative pressure, thereby increasing the braking force. The vacuum pump is widely used in metallurgy, brick and ceramics and other industries. In the metallurgical industry, the vacuum pump can be used to prevent the metal from being oxidized due to high temperature during processing. The spiral rotor of the vacuum pump can drive the internal work;

[0003] There are certain disadvantages in the prior art of the spiral rotor of the vacuum pump. When the spiral rotor of the vacuum pump is working, the two rotors often rub against each other. After the rotors of the vacuum pump contact or rub against each other, the high wear-resistant and friction-reducing BN composite coating of the rotor will be consumed. After the consumption, the rotors cannot transmit the power well and cannot compress the gas well. The spiral rotor of the vacuum pump needs to be replaced before it can work. Otherwise, the vacuum spiral rotor will be severely worn, which will affect the operation of the equipment. Utility Model Content

[0004] The utility model aims to provide a vacuum pump spiral rotor with a highly wear-resistant and friction-reducing BN composite coating to solve the problems raised in the above-mentioned background technology.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A vacuum pump spiral rotor with a highly wear-resistant and anti-friction BN composite coating comprises a rotor 1 and a rotor 2, which are arranged inside a vacuum pump body. The rotor 1 and the rotor 2 penetrate the inside of the vacuum pump body, and both ends of the rotor 1 and the rotor 2 are rotatably connected to the vacuum pump body. The cylindrical surface of the rotor 1 and the cylindrical surface of the rotor 2 are provided with a replacement structure, and the replacement structure comprises a spiral spiral block 1 and a spiral spiral block 2, the spiral block 1 is welded to the cylindrical surface of the rotor 1, and the spiral block 2 is welded to the cylindrical surface of the rotor 2, the outside of the spiral block 1 and the outside of the spiral block 2 are both sleeved with a spiral coating contact block, the inner wall of the coating contact block is provided with a spiral matching groove, and the cross-sectional shapes of the spiral block 1, the spiral block 2 and the coating contact block are the same.

[0007] As a preferred technical solution of the utility model, the rotor one and the rotor two rotate in opposite directions, and the contact between the coating contact block of the spiral block one and the coating contact block of the spiral block two is line contact.

[0008] As a preferred technical solution of the utility model, the coating contact block of spiral block one and the coating contact block of spiral block two are both provided with threaded holes, and fastening bolts are screwed inside the threaded holes, and the ends of the two fastening bolts are respectively connected to spiral block one and spiral block two.

[0009] As a preferred technical solution of the utility model, a contact structure is provided at the contact point between the coating contact block of spiral block one and the coating contact block of spiral block two, and the contact structure includes contact strip one and contact strip two, contact strip one is adhered to the outer wall of the coating contact block of spiral block one, and contact strip two is adhered to the outer wall of the coating contact block of spiral block two, and both contact strip one and contact strip two are connected to the coating contact block through contact pins.

[0010] As a preferred technical solution of the utility model, the outermost wall of the coating contact block of spiral block one contacts contact strip two of spiral block two, and the outermost wall of the coating contact block of spiral block two contacts contact strip one of spiral block one.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. A replacement structure is provided, and the coating contact block is sleeved on the spiral block 1 and the spiral block 2, which not only makes it convenient to replace the coating contact block, thereby ensuring that the two coating contact blocks are in contact with each other when the spiral block 1 and the spiral block 2 rotate, but also makes it easier to replace the BN composite coating applied on the surface of the coating contact block after it is worn out;

[0013] 2. A contact structure is provided, and the gap between the coating contact block of spiral block one and the coating contact block of spiral block two is adjusted by changing the thickness of the two contact strips. The thickness of the contact strip can be adjusted according to the viscosity of the fluid transported by the vacuum pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0015] Figure 1 This is the main structure diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the interior of the vacuum pump body of the utility model;

[0017] Figure 3 This is a schematic diagram of the replacement structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the contact structure of the utility model.

[0019] In the figure: 1. vacuum pump body; 2. rotor one; 3. rotor two; 4. replacement structure; 5. contact structure; 41. spiral block one; 42. spiral block two; 43. coating contact block; 44. matching groove; 45. fastening bolt; 46. threaded hole; 51. contact strip one; 52. contact strip two; 53. contact pin. DETAILED DESCRIPTION

[0020] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Embodiment 1:

[0022] See also Figure 1 - Figure 4 As shown, a vacuum pump spiral rotor with a high wear-resistant and anti-friction BN composite coating includes a rotor 1 2 and a rotor 2 3, which are arranged inside a vacuum pump body 1, and the rotor 1 2 and the rotor 2 3 penetrate the inside of the vacuum pump body 1, and both ends of the rotor 1 2 and the rotor 2 3 are rotatably connected with the vacuum pump body 1, and the rotor 1 2 inside the vacuum pump body 1 is driven to rotate by the motor of the vacuum pump, and the rotor 1 2 and the rotor 2 3 rotate with each other, so that the rotor 1 2 and the rotor 2 3 can rotate synchronously, and the cylindrical surface of the rotor 1 2 and the cylindrical surface of the rotor 2 3 are provided with a replacement structure 4, and the replacement structure 4 includes a spiral block 1 41 and a spiral block 2 42, and the spiral block 1 41 is welded to the cylindrical surface of the rotor 1 2, and the spiral block 2 42 is welded to the cylindrical surface of the rotor 2 3, and the spiral block 1 41 is welded to the cylindrical surface of the rotor 1 2, and the spiral block 2 42 is welded to the cylindrical surface of the rotor 2 3. When block 1 41 rotates, it will drive the rotation of spiral block 2 42. The outside of spiral block 1 41 and the outside of spiral block 2 42 are both provided with a spiral coating contact block 43. The inner wall of coating contact block 43 is provided with a spiral matching groove 44. The cross-sectional shapes of spiral block 1 41, spiral block 2 42 and coating contact block 43 are the same. Since spiral block 1 41, spiral block 2 42 and coating contact block 43 are spiral, spiral block 2 42 can be inserted into spiral block 1 41 of rotor 1 2, and spiral block 1 41 can be inserted into spiral block 2 42 of rotor 2 3. The coating contact block 43 of spiral block 1 41 and the coating contact block 43 of spiral block 2 42 are rotated, thereby forming a vacuum area and then allowing liquid to enter and discharge from between rotor 1 2 and rotor 2 3.

[0023] In this embodiment, rotor 1 2 and rotor 2 3 rotate in opposite directions, and the contact between the coating contact block 43 of spiral block 1 41 and the coating contact block 43 of spiral block 2 42 is line contact. When rotor 1 2 and rotor 2 3 rotate, the internal air of the vacuum pump body 1 is compressed and discharged.

[0024] In this embodiment, the coating contact block 43 of the spiral block 1 41 and the coating contact block 43 of the spiral block 2 42 are both provided with threaded holes 46, and fastening bolts 45 are screwed into the inside of the threaded holes 46, and the ends of the two fastening bolts 45 are respectively connected to the spiral block 1 41 and the spiral block 2 42, so that the coating contact block 43 of the spiral block 1 41 can be in contact with the coating contact block 43 of the spiral block 2 42, so that the coating contact block 43 of the spiral block 2 42 and the rotor 2 3 can be disassembled and assembled therefrom, thereby making it more convenient to take the coating contact block 43 out of the rotor 1 2 and the rotor 2 3.

[0025] In this embodiment, a contact structure 5 is provided at the contact point between the coating contact block 43 of the spiral block 1 41 and the coating contact block 43 of the spiral block 2 42. The contact structure 5 includes a contact strip 1 51 and a contact strip 2 52. The contact strip 1 51 is adhered to the outer wall of the coating contact block 43 of the spiral block 1 41, and the contact strip 2 52 is adhered to the outer wall of the coating contact block 43 of the spiral block 2 42. The contact strip 1 51 and the contact strip 2 52 are both connected to the coating contact block 43 through contact pins 53. The outer shape of the spiral block 1 41 is adapted to the spiral block 2 42 and the spiral block 1 41, so that the contact strip 1 51 of the spiral block 1 41 and the contact strip 2 52 of the spiral block 2 42 can be matched, thereby reducing the leakage of the vacuum pump when pumping water.

[0026] In this embodiment, the outermost wall of the coating contact block 43 of the spiral block 41 contacts the contact strip 2 52 of the spiral block 42, and the outermost wall of the coating contact block 43 of the spiral block 42 contacts the contact strip 1 51 of the spiral block 41. After replacing the coating contact block 43, the spiral block 41 of the rotor 2 and the spiral block 2 42 of the rotor 2 3 are brought into contact.

[0027] When the utility model is in use, the motor of the vacuum pump drives the rotor 2 inside the pump body 1 of the vacuum pump to rotate, and the rotor 2 and the rotor 3 rotate with each other, so that the rotor 2 and the rotor 3 can rotate synchronously, the spiral block 41 is welded to the cylindrical surface of the rotor 2, and the spiral block 42 is welded to the cylindrical surface of the rotor 3. When the spiral block 41 rotates, the spiral block 42 is driven to rotate, and the cross-sectional shapes of the spiral block 41, the spiral block 42 and the coating contact block 43 are the same. Since the spiral block 41, the spiral block 42 and the coating contact block 43 are spiral, the spiral block 42 can be inserted into the spiral block 41 of the rotor 2, the spiral block 41 can be inserted into the spiral block 42 of the rotor 3, and the coating contact block 43 of the spiral block 41 can be inserted into the coating contact block 43 of the spiral block 41. 3 and the coated contact block 43 of the spiral block 2 42 rotate, thereby forming a vacuum area and then allowing the liquid to enter and be discharged from between the rotors 1 2 and 2 3. When the rotors 1 2 and 2 3 rotate, the internal air of the vacuum pump body 1 is compressed and discharged, and the coated contact block 43 of the spiral block 1 41 can contact the coated contact block 43 of the spiral block 2 42, so that the coated contact block 43 of the spiral block 2 42 and the rotor 2 3 can be disassembled and assembled therefrom, so that it is more convenient to take the coated contact block 43 out of the rotors 1 2 and 2 3, and the shape of the spiral block 1 41 is adapted to the spiral blocks 2 42 and the spiral block 1 41, so that the contact strip 1 51 of the spiral block 1 41 is convenient to cooperate with the contact strip 2 52 of the spiral block 2 42, thereby reducing the leakage of the vacuum pump when pumping water.

[0028] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A vacuum pump helical rotor with a highly wear-resistant and anti-friction BN composite coating, comprising a rotor 1 (2) and a rotor 2 (3), which are arranged inside a vacuum pump body (1), wherein the rotor 1 (2) and the rotor 2 (3) penetrate the inside of the vacuum pump body (1), and both ends of the rotor 1 (2) and the rotor 2 (3) are rotatably connected to the vacuum pump body (1); characterized in that: The cylindrical surfaces of the rotor one (2) and the rotor two (3) are provided with a replacement structure (4), and the replacement structure (4) comprises a spiral block one (41) and a spiral block two (42), wherein the spiral block one (41) is welded to the cylindrical surface of the rotor one (2), and the spiral block two (42) is welded to the cylindrical surface of the rotor two (3), and the outside of the spiral block one (41) and the outside of the spiral block two (42) are both sleeved with a spiral coating contact block (43), and the inner wall of the coating contact block (43) is provided with a spiral matching groove (44), and the cross-sectional shapes of the spiral block one (41), the spiral block two (42) and the coating contact block (43) are the same.

2. A vacuum pump helical rotor with a highly wear-resistant and anti-friction BN composite coating according to claim 1, characterized in that: The rotor one (2) and the rotor two (3) rotate in opposite directions, and the contact between the coating contact block (43) of the spiral block one (41) and the coating contact block (43) of the spiral block two (42) is line contact.

3. A vacuum pump helical rotor with a highly wear-resistant and anti-friction BN composite coating according to claim 2, characterized in that: The coating contact block (43) of the spiral block one (41) and the coating contact block (43) of the spiral block two (42) are both provided with threaded holes (46), and fastening bolts (45) are screwed into the inside of the threaded holes (46), and the ends of the two fastening bolts (45) are respectively connected to the spiral block one (41) and the spiral block two (42).

4. A vacuum pump helical rotor with a highly wear-resistant and anti-friction BN composite coating according to claim 3, characterized in that: A contact structure (5) is provided at the contact point between the coating contact block (43) of the spiral block one (41) and the coating contact block (43) of the spiral block two (42); the contact structure (5) comprises a contact strip one (51) and a contact strip two (52); the contact strip one (51) is adhered to the outer wall of the coating contact block (43) of the spiral block one (41); the contact strip two (52) is adhered to the outer wall of the coating contact block (43) of the spiral block two (42); the contact strip one (51) and the contact strip two (52) are both connected to the coating contact block (43) via a contact pin (53).

5. A vacuum pump helical rotor with a highly wear-resistant and anti-friction BN composite coating according to claim 4, characterized in that: The outermost wall of the coating contact block (43) of the spiral block one (41) contacts the contact strip two (52) of the spiral block two (42), and the outermost wall of the coating contact block (43) of the spiral block two (42) contacts the contact strip one (51) of the spiral block one (41).

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