Roots vacuum pump

Abstract

The utility model provides a roots vacuum pump which aims at solving the technical problem that the heat dissipation performance of an existing roots pump is not ideal. The Roots vacuum pump comprises a pump body, the pump body comprises a machine shell, a first side cover and a second side cover, the first side cover and the second side cover are arranged at the two ends of the machine shell respectively, a cavity is formed among the first side cover, the machine shell and the second side cover, and a rotor assembly is arranged in the cavity; the first end cover is connected with the first side cover; the second end cover is connected with the second side cover, and a plurality of raised lines are arranged on the outer wall of the second end cover at intervals; and the driving motor is mounted on one side of the first end cover, and the power output end of the driving motor is in driving connection with the rotor assembly. According to the utility model, the second end cover is additionally provided with the raised ribs, so that the heat dissipation area can be increased, the contact area between the end covers and air is increased, and the heat dissipation effect is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of vacuum pump especially relates to a roots vacuum pump. BACKGROUND

[0002] Roots vacuum pump (roots pump) with its high efficiency, stability, strong applicability etc. in multiple industrial fields plays an important role. The working principle of roots pump is based on the reciprocating motion of double rotor (or called roots impeller, rotor). Roots pump produces heat in the running process, and these heat mainly comes from the friction of rotor, compression of gas and work of motor etc. In order to ensure the normal work of pump, these heat must be effectively dissipated, avoid overheating of pump body to cause performance decline or damage. SUMMARY

[0003] In view of the above situation, in order to overcome the defects of prior art, the utility model aims at providing a roots vacuum pump, which solves the technical problem that the heat dissipation performance of the existing roots pump is not very ideal.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] A roots vacuum pump, comprising: a pump body, comprising a shell and a first side cover and a second side cover respectively arranged at two ends of the shell, a cavity is formed between the first side cover, the shell and the second side cover, and a rotor assembly is arranged in the cavity; a first end cover connected with the first side cover; a second end cover connected with the second side cover, a plurality of convex strips are arranged on the outer wall of the second end cover; a driving motor installed on one side of the first end cover, and the power output end of the driving motor is drivingly connected with the rotor assembly.

[0006] The utility model adds the convex strip of protruding on the second end cover, can increase the heat dissipation area, increase the contact area of end cover and air, effectively improve the heat dissipation effect, and when the person contacts the end face surface, can also reduce the contact area, reduce the hot feeling.

[0007] Optionally, a first oil mirror, a water inlet pipe and a water outlet pipe are arranged on the first end cover, and the water inlet pipe and the water outlet pipe are communicated with a cold water pipe arranged on the inner wall of the first end cover. The circulating cooling water pipe arranged in the first end cover can continuously reduce the temperature of oil.

[0008] Optionally, a plurality of reserved holes are arranged on the first end cover, and a sealing cover is movably arranged on the reserved hole. Through the arrangement of the reserved hole, the roots vacuum pump is more flexible and convenient to use.

[0009] Optionally, a temperature sensor is installed on the reserved hole. The oil temperature can be monitored in real time.

[0010] Optionally, two reserved holes are formed on the first end cover, a cooling water pipe is arranged on the inner wall of the first end cover, and a water inlet pipe and a water outlet pipe are respectively connected to the two reserved holes and communicated with the cooling water pipe.

[0011] Optionally, a second oil mirror and a oil drain hole are arranged on the second end cover.

[0012] Optionally, the second oil mirror is arranged at the lower part of one side of the second end cover, protrusions are arranged on the two sides of the second oil mirror and the top of the second oil mirror, and the ends of the protrusions away from the second end cover are arranged in a rounded corner manner.

[0013] Optionally, an air inlet and an air outlet are arranged on the shell and are communicated with each other, cover bodies for closing the shell are arranged on the air inlet and the air outlet, a plurality of oil injection holes are arranged on the first side cover and the second side cover, and support members are symmetrically arranged on the bottoms of the first side cover and the second side cover.

[0014] Optionally, the support member is arranged in an expanding manner from top to bottom at one side, a groove is formed on the support member, a fixing platform is formed at the bottom of the groove, and a mounting hole is arranged on the fixing platform.

[0015] Optionally, the driving motor is connected to the first end cover through a connecting piece, and the connecting piece, the first end cover, the first side cover, the shell, the second side cover and the second end cover are arranged in a detachable manner.

[0016] Optionally, the first end cover and the second end cover are provided with connecting rings with diameters greater than those of the end covers at one end, and the connecting rings and the side covers are connected to the shell through the fixing pieces.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] The utility model discloses a convex protrusion is arranged on the second end cover, the heat dissipation area can be increased, the contact area of the end cover and air is increased, the heat dissipation effect is effectively improved, when the person contacts the end face surface, the contact area can be reduced, and the scorching feeling is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0020] Figure 1 It is a structural schematic diagram of the utility model.

[0021] Figure 2 It is a front view of the utility model.

[0022] Figure 3 It is a side view of the utility model.

[0023] Figure 4 It is a structural schematic diagram of the second end cover in the utility model.

[0024] Figure 5 It is a structural schematic diagram of the second end cover in the utility model.

[0025] Reference signs:

[0026] 1, pump body; 11, casing; 12, first side cover; 121, oil injection hole; 13, second side cover; 14, support; 141, groove; 142, fixed platform; 143, mounting hole;

[0027] 2, first end cover; 21, first oil mirror; 22, water inlet pipe; 23, water outlet pipe; 24, cover;

[0028] 3, second end cover; 31, convex strip; 32, second oil mirror; 33, oil drain hole;

[0029] 4, driving motor; 5, connecting piece;

[0030] 6, connecting ring; 61, through hole;

[0031] 7, fixing piece. DETAILED DESCRIPTION

[0032] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the utility model application embodiments. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0033] In the description of the embodiments of the utility model application, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", "end", "side" and the like is the orientation or positional relationship based on the drawings shown, and is only for the convenience of describing the embodiments of the utility model application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the utility model application.

[0034] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the utility model application, the meaning of "multiple" is two or more, unless otherwise explicitly specified.

[0035] In the embodiments of the utility model application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the embodiments of the utility model application can be understood according to the specific circumstances.

[0036] In the embodiments of the utility model application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0037] The following disclosure provides many different embodiments or examples for implementing different structures of the embodiments of the present application. In order to simplify the disclosure of the embodiments of the present application, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present application. In addition, the embodiments of the present application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0038] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0039] As Figures 1-5 shown, the embodiments of the present application provide a Roots vacuum pump, comprising: a pump body 1 and a first end cover 2 and a second end cover 3 arranged at both ends of the pump body 1, and a driving motor 4 arranged on one side of the first end cover 2. The power output end of the driving motor 4 is drivingly connected with a rotor assembly arranged in the pump body 1, and a plurality of protrusions 31 are protrudingly arranged on the outer wall of the second end cover 3, the plurality of protrusions 31 are arranged in intervals from top to bottom. By adding protruding protrusions 31 on the second end cover 3, the heat dissipation area can be increased, the heat dissipation effect is improved, and when the contact end surface is contacted, the contact area can be reduced, so that the subjective feeling is not so hot.

[0040] Specifically, the pump body 1 comprises a shell 11 and a first side cover 12 and a second side cover 13 arranged at both ends of the shell 11, a cavity is formed between the first side cover 12, the shell 11 and the second side cover 13, and a rotor assembly is arranged in the cavity, and the shaft of the rotor assembly is rotatably connected with the side covers at both ends, the first end cover 2 is arranged between the first side cover 12 and the driving motor 4, the power output end of the driving motor 4 is drivingly connected with the rotor assembly, and the driving motor 4 drives the rotor assembly to rotate.

[0041] Optionally, the shell 11 is provided with an air inlet and an air outlet in communication, and the air inlet and the air outlet are provided with cover bodies for sealing the shell 11, and the first side cover 12 and the second side cover 13 are each provided with a plurality of oil injection holes 121 in communication with the internal cavity.

[0042] Optionally, the bottom of the first side cover 12 and the second side cover 13 is respectively provided with a support 14.

[0043] Optionally, a groove 141 is formed in the support 14, a fixing platform 142 is formed at the bottom of the groove 141, and a mounting hole 143 is arranged on the fixing platform 142. One side of the support 14 is expanded from top to bottom, for example, the outer side of the support 14 is expanded from top to bottom. The area of the lower end of the support 14 is larger than that of the upper end, which is conducive to improving the stability of the support, and the groove 141 can reduce the weight of the support 14.

[0044] Optionally, the first end cover 2 is provided with a first oil mirror 21 on one side, which can facilitate the observation of the oil level.

[0045] Optionally, the first end cover 2 is further provided with a water inlet pipe 22 and a water outlet pipe 23, which are in communication with the cooling water pipe arranged on the inner wall of the first end cover 2. In use, the cooling water enters the water inlet pipe 22, flows through the cooling water pipe to cool the oil, and then is discharged from the water outlet pipe 23, effectively reducing the temperature of the oil.

[0046] Optionally, the first end cover 2 is provided with a temperature sensor for sensing the temperature of the oil inside the first end cover 2.

[0047] Optionally, a plurality of reserved holes are formed in the first end cover 2, and a sealing cover 24 is movably arranged on the reserved hole. The reserved hole can be used to install a circulating cooling water pipe and / or a temperature sensor. As an implementation scenario, for example, a reserved hole is formed in the top and bottom of the first end cover 2 respectively, and the two reserved holes can be arranged on one side of the water inlet pipe 22 and the water outlet pipe 23 respectively. When used to install a circulating cooling water pipe, an additional cooling water pipe is arranged on the inner wall of the first end cover 2, and the two reserved holes are connected to the water inlet pipe and the water outlet pipe respectively, and the water inlet pipe and the water outlet pipe are in communication with the cooling water pipe. By using the reserved hole to additionally install a set of circulating cooling, the cooling effect can be further improved. When a temperature sensor is installed through the reserved hole, the temperature of the oil inside the first end cover 2 can be monitored in real time. As another implementation scenario, three or more reserved holes can be arranged, and a circulating cooling water pipe and a temperature sensor can be synchronously arranged through the reserved holes.

[0048] Optionally, the second end cover 3 is provided with a second oil mirror 32, and the bottom of the second end cover 3 is provided with a drain hole 33.

[0049] Optionally, the second oil mirror 32 is arranged on the lower part of one side of the second end cover 3, and the two sides of the second oil mirror 32 and the top of the second oil mirror 32 are respectively provided with a convex strip 31.

[0050] Optionally, the end of the convex strip 31 away from the second end cover 3 is rounded.

[0051] Optionally, the surface of the convex strip 31 and the surface of the second oil mirror 32 are at the same horizontal position.

[0052] Optionally, the driving motor 4 is connected to the first end cover 2 through a connecting piece 5.

[0053] Optionally, the connecting piece 5, the first end cover 2, the first side cover 12, the shell 11, the second side cover 13 and the second end cover 3 are arranged in sequence and can be detachably arranged.

[0054] Optionally, the connecting piece 5 can adopt a flange plate, which is connected with the first end cover 2 through the flange plate and fixed by means of bolt connection.

[0055] Optionally, the first end cover 2 and the second end cover 3 are respectively provided with a connecting ring 6 with a diameter larger than that of the end cover, which is extended from the outer wall of one end of the end cover, and a plurality of through holes 61 are arranged on the connecting ring 6 and the side cover, and a connecting hole is arranged on the casing 11 at a position corresponding to the through holes 61, so that the end cover, the side cover and the casing 11 are fixedly connected by means of the fixing piece 7 which is sequentially threaded through the through holes 61 of the connecting ring 6 and the side cover and connected with the connecting hole of the casing 11. The fixing piece 7 can adopt a fastening bolt, and the end cover and the side cover are detachably connected with the casing 11 through the fastening bolt.

[0056] Optionally, the second end cover 3 is a polygonal structure, and correspondingly, the connecting ring 6 and the second side cover 13 are adapted to the structure of the second end cover 3, and the first end cover 2 can also adopt a polygonal structure. Preferably, the second end cover 3 is an octagonal structure, and correspondingly, the connecting ring 6, the second side cover 13 and the first side cover 12 are all octagonal structures.

[0057] The details not described in the embodiment are known in the art.

[0058] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can easily think of various changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A Roots vacuum pump, characterized in that, The utility model relates to a pump body (1) comprising a casing (11) and a first side cover (12) and a second side cover (13) arranged at both ends of the casing (11) respectively, a cavity is formed between the first side cover (12), the casing (11) and the second side cover (13), and a rotor assembly is arranged in the cavity. A first end cover (2) is connected with the first side cover (12). A second end cover (3) is connected with the second side cover (13), and a plurality of protrusions (31) are arranged on the outer wall of the second end cover (3) at intervals. A driving motor (4) is installed on one side of the first end cover (2), and the power output end of the driving motor (4) is drivingly connected with the rotor assembly. A first oil mirror (21), a water inlet pipe (22) and a water outlet pipe (23) are arranged on the first end cover (2), and the water inlet pipe (22) and the water outlet pipe (23) are connected with a cold water pipe arranged on the inner wall of the first end cover (2).

2. - The Roots vacuum pump according to claim 1, characterized in that, A reserved hole is arranged on the first end cover (2), and a sealing cover (24) is movably arranged on the reserved hole.

3. - The Roots' vacuum pump according to claim 2, characterized in that, A temperature sensor is installed on the reserved hole.

4. - The Roots pump according to claim 3, characterized in that, And / or, a cooling water pipe is arranged on the inner wall of the first end cover (2), and a water inlet pipe and a water outlet pipe connected with the cooling water pipe are respectively connected with the reserved hole. A second oil mirror (32) and a oil drain hole (33) are arranged on the second end cover (3).

5. The Roots pump according to claim 1, characterized in that The second oil mirror (32) is located at the lower part of one side of the second end cover (3), protrusions (31) are arranged on both sides of the second oil mirror (32) and the top of the second oil mirror (32) respectively, and the ends of the protrusions (31) away from the second end cover (3) are arranged with rounded corners.

6. The Roots pump according to claim 5, characterized in that An air inlet and an air outlet are arranged on the casing (11) and are connected with each other, cover bodies for closing the casing (11) are arranged on the air inlet and the air outlet, a plurality of oil injection holes (121) are arranged on the first side cover (12) and the second side cover (13), and support members (14) are symmetrically arranged on the bottoms of the first side cover (12) and the second side cover (13) respectively.

7. The Roots pump according to claim 1, characterized in that The support member (14) is arranged in an expanding manner from top to bottom on one side, a groove (141) is formed on the support member (14), a fixed platform (142) is formed on the bottom of the groove (141), and a mounting hole (143) is arranged on the fixed platform (142).

8. The Roots pump according to claim 7, characterized in that The driving motor (4) is connected with the first end cover (2) through a connecting member (5), and the connecting member (5), the first end cover (2), the first side cover (12), the casing (11), the second side cover (13) and the second end cover (3) are arranged in sequence and can be detached.

9. The Roots pump according to claim 1, characterized in that Connecting rings (6) with diameters larger than those of the end covers are arranged on one end of the first end cover (2) and the second end cover (3), and the connecting rings (6) and the side covers are connected with the casing (11) through fixing members (7).

10. The Roots vacuum pump according to claim 9, characterized in that ​

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