Duplex cylinder structure of Roots blower

Abstract

The utility model discloses a Roots blower duplex cylinder body structure which comprises a cylinder body, the cylinder body comprises a first-stage cylinder body and a second-stage cylinder body which are integrally formed, the first-stage cylinder body and the second-stage cylinder body are arranged in series, the first-stage cylinder body is located at the upper end of the second-stage cylinder body, a base is arranged at the lower end of the second-stage cylinder body, and the first-stage cylinder body and the second-stage cylinder body are connected in series. The upper end of the base is provided with an installation support used for fixing the cylinder bodies, the first-stage cylinder body and the second-stage cylinder body are integrally formed in a casting mode, a higher compression ratio and higher compression efficiency are achieved through second-stage compression, and compared with two common two-stage series-connection machine heads, the space structure of the two-stage series-connection machine head is compact.

Description

TECHNICAL FIELD

[0001] The utility model relates to roots blower technical field especially relates to a roots blower double cylinder structure. BACKGROUND

[0002] Roots blower is a kind of mechanical equipment commonly used for gas compression, is widely used in petrochemical industry, metallurgy, electric power, environmental protection and other industries, mainly for gas pressurization, conveying and air extraction.In some specific occasions, single roots blower is limited when meeting the flow requirement, and the compression ratio and output pressure are often limited, which cannot meet higher working requirements.

[0003] For the above problems, some improvements are proposed in the prior art, for example, the patent with the authorized announcement number CN213655124U discloses a high-pressure air-cooled roots blower series unit, which comprises a whole machine chassis, a motor and a fan assembly, the whole machine chassis is provided with a motor on one side, and a motor pulley is arranged on the output shaft of the motor;The fan assembly includes a primary fan, a secondary fan and a fan pulley, the other side of the whole machine chassis is provided with the primary fan and the secondary fan, and the primary fan and the secondary fan are connected in series between the primary fan and the secondary fan;The motor pulley and the fan pulley are connected by a V-belt.

[0004] The above prior art usually adopts the scheme of two machine heads in series to achieve higher compression ratio, but the split structure is not compact enough, so the occupied area is still large. UTILITY MODEL CONTENTS

[0005] The purpose of the utility model is to provide a roots blower double cylinder structure, the primary cylinder and the secondary cylinder are integrally cast into shape, the secondary compression achieves higher compression ratio and higher compression efficiency, and the space structure of the ordinary two-stage series two machine heads is compact.

[0006] Technical scheme

[0007] A roots blower double cylinder structure, comprising a cylinder, the cylinder comprises an integrally formed primary cylinder and a secondary cylinder, the primary cylinder and the secondary cylinder are arranged in series, the primary cylinder is located at the upper end of the secondary cylinder, the lower end of the secondary cylinder is provided with a base, and the upper end of the base is provided with a mounting bracket for fixing the cylinder.

[0008] The primary cylinder and the secondary cylinder are integrally cast into shape, and the space structure of the ordinary two-stage series two machine heads is compact.

[0009] Further, the mounting bracket is only fixedly connected with the secondary cylinder, since the primary cylinder and the secondary cylinder are integrally formed, the fixing of the entire cylinder can be completed under the condition that the secondary cylinder at the lower end is fixed, and the structure is simpler.

[0010] Further, the first-stage cylinder is internally provided with a first rotor, the second-stage cylinder is internally provided with a second rotor, the outer end of the first-stage cylinder is provided with a first motor for controlling the rotation of the first rotor, and the outer end of the second-stage cylinder is provided with a second motor for controlling the rotation of the second rotor.

[0011] Further, the upper end of the first-stage cylinder is provided with an air inlet, and the lower end of the second-stage cylinder is provided with an air outlet, and the air inlet is connected with an air inlet silencer.

[0012] Further, the first rotor and the second rotor are arranged in parallel.

[0013] Further, the first motor and the second motor are arranged in parallel, since the size of the control motor of the Roots blower is large, the first motor and the second motor are arranged in parallel, and the structures of the two motors are arranged on the same side of the cylinder, so that the compactness of the structure is further increased.

[0014] Further, the first motor and the second motor are arranged in parallel with the air inlet silencer, since the air inlet of the Roots blower generally needs to be provided with an air inlet silencer, the air inlet silencer and the two motors are arranged in parallel, so that the structure is more compact.

[0015] Beneficial effects: The first-stage cylinder and the second-stage cylinder are integrally formed, the two-stage compression achieves a higher compression ratio and a higher compression efficiency, and the space structure of the ordinary two-stage series connection two machine heads is compact; only the second-stage cylinder is fixed, and the simplified structure of the first-stage cylinder and the second-stage cylinder reduces the number of parts and is more convenient to install. In addition, the plurality of seams and connecting parts in the traditional structure are reduced, so that the maintenance of the blower is easier, and the complexity and cost of daily maintenance are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a sectional view of the first embodiment of the utility model;

[0017] Figure 2 is a sectional view of the cylinder of the utility model;

[0018] Figure 3 is a sectional view of the rotor inside the cylinder of the utility model;

[0019] Figure 4 is a sectional view of the second embodiment of the utility model. DETAILED DESCRIPTION

[0020] In order to make the technical scheme of the present application clearer, the present application will be further described in detail below in combination with the drawings and specific embodiments.

[0021] Embodiment 1

[0022] As Figures 1-3As shown, a Roots blower double-cylinder structure includes a cylinder, the cylinder includes a one-stage cylinder 1 and a two-stage cylinder 2 integrally formed, the one-stage cylinder 1 and the two-stage cylinder 2 are arranged in series, the one-stage cylinder 1 is located at the upper end of the two-stage cylinder 2, the lower end of the two-stage cylinder 2 is provided with a base 3, and the upper end of the base 3 is provided with a mounting bracket 4 for fixing the cylinder. The one-stage cylinder 1 and the two-stage cylinder 2 are integrally casted, which is the key of the technical solution. By designing the one-stage cylinder 1 and the two-stage cylinder 2 as an integrated structure, the leakage problem that may occur when connecting two independent cylinders in traditional blowers can be eliminated, the contact and friction between parts are reduced, and the operating efficiency of the blower is improved. In addition, since the one-stage cylinder 1 and the two-stage cylinder 2 are integrally casted, the assembly work is reduced, and the production cost is reduced.

[0023] In the embodiment, the mounting bracket 4 is only fixedly connected with the two-stage cylinder 2. The design of the mounting bracket simplifies the installation process. Traditional blowers need to be provided with mounting brackets for the one-stage cylinder 1 and the two-stage cylinder 2 respectively, and usually need multiple fixing points. In the technical solution, the mounting bracket 4 is only fixedly connected with the two-stage cylinder 2. Since the one-stage cylinder 1 and the two-stage cylinder 2 are designed integrally, fixing the two-stage cylinder 2 can stabilize the entire cylinder structure, which not only reduces the number of mounting brackets 4, but also reduces the manufacturing and installation cost of the equipment.

[0024] In the embodiment, the one-stage cylinder 2 is provided with a first rotor 11, the two-stage cylinder 2 is provided with a second rotor 21, the outer end of the one-stage cylinder 2 is provided with a first motor 12 for controlling the rotation of the first rotor 11, and the outer end of the two-stage cylinder 2 is provided with a second motor 22 for controlling the rotation of the second rotor 21.

[0025] In the embodiment, the first rotor 11 and the second rotor 21 are arranged in parallel. This arrangement enables the rotors in the one-stage cylinder 1 and the two-stage cylinder 2 to work in parallel, improving the stability during compression and effectively reducing vibration and noise. The parallel layout design of the rotors not only ensures the efficient operation of the blower system, but also improves the reliability and durability of the overall mechanical structure. The simultaneous operation of the two groups of rotors not only speeds up the compression efficiency of the gas, but also reduces the energy loss.

[0026] In the embodiment, the first motor 12 and the second motor 22 are arranged in parallel. Considering the large size of the control motor of the Roots blower, the first motor 12 and the second motor 22 are arranged in parallel on the same side of the cylinder in the design. This arrangement not only reduces the mutual interference between the motors, but also effectively saves space and reduces the overall floor area of the equipment.

[0027] Embodiment 2

[0028] As Figure 4As shown, the upper end of the primary cylinder 1 is provided with an air inlet 13, and the lower end of the secondary cylinder 2 is provided with an air outlet 23, and the air inlet is connected with an air inlet silencer 5.

[0029] In the embodiment, the first motor 12 and the second motor 22 are arranged in parallel with the air inlet silencer 5.

[0030] Since the air inlet of the Roots blower generally needs to be provided with an air inlet silencer, the air inlet silencer area is arranged in parallel with the two motors, so that the structure is more compact.

[0031] Working principle: gas enters the primary cylinder 1 cavity from the air inlet 13 and is compressed, and as the first rotor 11 rotates, the gas is compressed into the secondary cylinder 2 main cavity and is then discharged from the air outlet 23. This design can reduce energy loss during compression and improve the compression efficiency of the gas through the cooperative work of the two rotors.

[0032] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A Roots blower twin cylinder structure, characterized by, The application relates to a cylinder body which comprises a primary cylinder (1) and a secondary cylinder (2) which are integrally formed and are arranged in series, the primary cylinder (1) is located at the upper end of the secondary cylinder (2), the lower end of the secondary cylinder (2) is provided with a base (3), and the upper end of the base (3) is provided with a mounting bracket (4) for fixing the cylinder body.

2. A Roots blower twin cylinder structure according to claim 1, wherein The mounting bracket (4) is fixedly connected with the secondary cylinder (2) only.

3. A Roots blower twin cylinder structure according to claim 1, wherein A first rotor (11) is arranged in the primary cylinder (1), a second rotor (21) is arranged in the secondary cylinder (2), the outer end of the primary cylinder (1) is provided with a first motor (12) for controlling the rotation of the first rotor (11), and the outer end of the secondary cylinder (2) is provided with a second motor (22) for controlling the rotation of the second rotor (21).

4. A Roots blower twin cylinder structure according to claim 1, wherein The upper end of the primary cylinder (1) is provided with an air inlet (13), the lower end of the secondary cylinder (2) is provided with an air outlet (23), and the air inlet is connected with an air inlet silencer (5).

5. A Roots blower twin cylinder structure according to claim 3, wherein The first rotor (11) and the second rotor (21) are arranged in parallel.

6. A Roots blower twin cylinder structure according to claim 3, wherein The first motor (12) and the second motor (22) are arranged in parallel.

7. A Roots blower twin cylinder structure according to claim 6, wherein The first motor (12) and the second motor (22) are arranged in parallel with the air inlet silencer (5).

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