Mixed casting cylinder body for vacuum pump

Abstract

The utility model discloses a mixed casting cylinder body for a vacuum pump, which comprises an outer cylinder body, an inner cylinder body and a cooling pipe, and is characterized in that the inner cylinder body is arranged in the outer cylinder body, and a gap is reserved between the inner cylinder body and the outer cylinder body; the cooling pipe is arranged in a gap between the outer cylinder body and the inner cylinder body and wound on the periphery of the inner cylinder body, the cooling pipe is provided with a water inlet end and a water outlet end, and the water inlet end of the cooling pipe and the water outlet end of the cooling pipe both extend out of the outer cylinder body. The cylinder body of the vacuum pump comprises the outer cylinder body and the inner cylinder body, the cooling pipe is arranged between the outer cylinder body and the inner cylinder body, heat is generated in the long-time use process of the cylinder body of the vacuum pump, cooling water can be directly introduced into the water inlet end of the cooling pipe, and therefore heat exchange between the cooling pipe and the outer cylinder body and between the cooling pipe and the inner cylinder body is achieved; effective heat dissipation of the cylinder body is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of vacuum pumps, and in particular to a hybrid casting cylinder body for a vacuum pump. Background Art

[0002] A vacuum pump is a device that evacuates a container. As the main structure of a vacuum pump, the cylinder plays an indispensable role in the vacuum pump. Existing vacuum pump cylinders are generally cast from gray iron or aluminum alloy, which has poor corrosion resistance and poor heat dissipation.

[0003] The above contents are only used to assist in understanding the technical solution of the present application and do not constitute an admission that the above contents are prior art. Utility Model Content

[0004] The main purpose of the present application is to provide a hybrid casting cylinder body for a vacuum pump, aiming to solve the problem of poor heat dissipation of the existing vacuum pump cylinder body.

[0005] To achieve the above-mentioned purpose, the present application provides a hybrid casting cylinder body for a vacuum pump, comprising an outer cylinder body, an inner cylinder body and a cooling pipe, wherein the inner cylinder body is arranged inside the outer cylinder body and a gap is left between the inner cylinder body and the outer cylinder body; the cooling pipe is arranged in the gap between the outer cylinder body and the inner cylinder body and is wound around the outer periphery of the inner cylinder body, the cooling pipe has a water inlet end and a water outlet end, and the water inlet end and the water outlet end of the cooling pipe both extend out of the outer cylinder body.

[0006] Optionally, the outer cylinder body has a front side surface and a rear side surface that are relatively arranged, and the outer cylinder body also has a top surface and a bottom surface that are relatively arranged, a through first mating hole is opened from the top surface to the bottom surface, and the first mating hole is a waist-shaped hole, and a through second mating hole is opened from the front side surface to the rear side surface, and the second mating hole is a circular hole, the inner cylinder body has the same structure as the outer cylinder body, and the cooling pipe is arranged to avoid the second mating hole.

[0007] Optionally, the cooling pipe is arranged in an "S" shape between the outer cylinder body and the inner cylinder body.

[0008] Optionally, the cooling pipe includes multiple horizontal sections and multiple curved sections, wherein the multiple horizontal sections are arranged parallel to each other along the inner cylinder body and are evenly arranged on the outer circumference of the inner cylinder body along the height direction of the inner cylinder body; and the multiple curved sections connect two adjacent horizontal sections, and make the cooling pipe form a curved reciprocating structure.

[0009] Optionally, the ratio of the distance between two adjacent horizontal sections to the height of the inner cylinder body is 0.4-0.6.

[0010] Optionally, a water inlet end of the cooling pipe and a water outlet end of the cooling pipe extend out of the same side of the outer cylinder body.

[0011] Optionally, a matching groove is provided on the inner wall of the outer cylinder body, and a side of the cooling pipe close to the outer cylinder body is matched in the matching groove, and a side of the cooling pipe close to the inner cylinder body is in contact with the inner cylinder body.

[0012] Optionally, the curved section is a semicircular structure.

[0013] Optionally, a matching groove is provided on the outer wall of the inner cylinder body, and a side of the cooling pipe close to the inner cylinder body is matched in the matching groove, and a side of the cooling pipe close to the outer cylinder body is in contact with the outer cylinder body.

[0014] Optionally, a connecting pipe is provided between two adjacent horizontal sections, and the connecting pipe and the horizontal sections are perpendicular to each other.

[0015] The embodiment of the present application proposes a hybrid casting cylinder body for a vacuum pump, by setting the cylinder body of the vacuum pump as an outer cylinder body and an inner cylinder body, and setting a cooling pipe between the outer cylinder body and the inner cylinder body, and by passing cooling water into the water inlet end of the cooling pipe, the heat generated by the cylinder body of the vacuum pump during long-term use can be heat exchanged through the provided cooling pipe, thereby improving the heat dissipation effect of the cylinder body; BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of a hybrid casting cylinder for a vacuum pump provided in an embodiment of the present application;

[0017] Figure 2 for Figure 1 A schematic diagram of a three-dimensional structure without the outer cylinder body;

[0018] Figure 3 for Figure 2 Schematic diagram of the layout structure of the cooling pipe;

[0019] Figure 4 for Figure 2 The structural schematic diagram of adding a connecting pipe to the cooling pipe;

[0020] Figure 5 for Figure 1 A schematic diagram of the structure from another perspective;

[0021] Among them, 1. outer cylinder body; 2. inner cylinder body; 3. cooling pipe; 301. horizontal section; 302. curved section; 303. connecting pipe; 4. first matching hole; 5. second matching hole.

[0022] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. 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.

[0024] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0027] See also Figure 1 to Figure 5The embodiment of the present application provides a hybrid casting cylinder body for a vacuum pump, which may include an outer cylinder body 1, an inner cylinder body 2 and a cooling pipe 3, wherein the inner cylinder body 2 is arranged inside the outer cylinder body 1 and a gap is left between the inner cylinder body 2 and the outer cylinder body 1; the cooling pipe 3 is arranged in the gap between the outer cylinder body 1 and the inner cylinder body 2 and is wound around the outer periphery of the inner cylinder body 2, the cooling pipe 3 has a water inlet end and a water outlet end, and the water inlet end of the cooling pipe 3 and the water outlet end of the cooling pipe 3 both extend out of the outer cylinder body 1.

[0028] Specifically, the outer cylinder body 1 is tightly attached to the inner cylinder body 2, one side of the cooling pipe 3 is tightly attached to the outer cylinder body 1, and the other side of the cooling pipe 3 is tightly attached to the inner cylinder body 2. When the mixed casting cylinder body for a vacuum pump involved in the present application generates heat during use, cooling water is input from the water inlet end of the cooling pipe 3, and the cooling water flows in the cooling pipe 3, and after heat exchange with the inner cylinder body 2 and the outer cylinder body 1, it flows out from the water outlet end of the cooling pipe 3, thereby realizing heat dissipation of the cylinder body.

[0029] In this embodiment, the cylinder body of the vacuum pump is configured as an outer cylinder body 1 and an inner cylinder body 2, and a cooling pipe 3 is provided between the outer cylinder body 1 and the inner cylinder body 2, and cooling water is introduced into the water inlet end of the cooling pipe 3. In this way, the heat generated by the cylinder body of the vacuum pump during long-term use can be heat exchanged through the cooling pipe 3, thereby improving the heat dissipation effect of the cylinder body.

[0030] See also Figure 1 The outer cylinder body 1 has a front side surface and a rear side surface that are relatively arranged. The outer cylinder body 1 also has a top surface and a bottom surface that are relatively arranged. A through first matching hole 4 is opened from the top surface to the bottom surface. The first matching hole 4 is a waist-shaped hole. The waist-shaped hole referred to here is a round-headed long hole. A through second matching hole 5 is opened from the front side surface to the rear side surface. The second matching hole 5 is a round hole. The inner cylinder body 2 has the same structure as the outer cylinder body 1, and the cooling pipe 3 is arranged to avoid the second matching hole 5.

[0031] In this embodiment, the first matching hole 4 and the second matching hole 5 are provided to facilitate the connection between the cylinder body and other components of the vacuum pump. The inner cylinder body 2 has the same structure as the outer cylinder body 1, which facilitates the matching of the outer cylinder body 1 and the inner cylinder body 2, thereby facilitating the arrangement of the cooling pipe 3, which is beneficial to the heat dissipation of the cylinder body. The cooling pipe 3 is arranged away from the second matching hole 5, avoiding the influence of the cooling pipe 3 on the assembly of the vacuum pump.

[0032] See also Figure 2 The cooling pipe 3 is arranged in an "S" shape between the outer cylinder body 1 and the inner cylinder body 2.

[0033] Specifically, when arranging the cooling pipe 3, the cooling pipe 3 can be arranged in an "S" shape horizontally or vertically. Regardless of the arrangement, the main purpose is to improve the heat dissipation efficiency of the cylinder body.

[0034] In this embodiment, the cooling pipe 3 is bent and arranged between the outer cylinder body 1 and the inner cylinder body 2, so that the contact area between the cooling pipe 3 and the outer cylinder body 1 and the inner cylinder body 2 is increased. After cooling water is injected into the cooling pipe 3, the cooling water can fully cool the outer cylinder body 1 and the inner cylinder body 2 with the help of the bent cooling pipe 3, thereby improving the heat dissipation efficiency of the cylinder body.

[0035] See also Figure 2 The cooling pipe 3 may include a plurality of horizontal sections 301 and a plurality of curved sections 302, wherein the plurality of horizontal sections 301 are arranged parallel to each other along the inner cylinder body 2 and are evenly arranged on the outer periphery of the inner cylinder body 2 along the height direction of the inner cylinder body 2; the plurality of curved sections 302 connect two adjacent horizontal sections 301 and make the cooling pipe 3 form a curved reciprocating structure.

[0036] Specifically, in some embodiments, the horizontal section 301 does not need to be arranged in parallel along the inner cylinder body 2 , and it is only necessary to ensure that the cooling pipes 3 are evenly distributed between the outer cylinder body 1 and the inner cylinder body 2 .

[0037] In this embodiment, the cooling pipe 3 is configured as a curved reciprocating structure. The advantage of such a configuration is that the contact area between the cooling pipe 3 and the outer cylinder body 1 and the inner cylinder body 2 is increased, thereby being more conducive to heat dissipation between the outer cylinder body 1 and the inner cylinder body 2.

[0038] Furthermore, the ratio of the distance between two adjacent horizontal sections 301 to the height of the inner cylinder body 2 is 0.4-0.6.

[0039] Specifically, the ratio of the distance between two adjacent horizontal sections 301 to the height of the inner cylinder body 2 can be 0.4, 0.5, or 0.6. It has been found in practice that when the ratio of the distance between two adjacent horizontal sections 301 to the height of the inner cylinder body 2 is 0.4, the contact area between the cooling pipe 3 and the outer cylinder body 1 and the inner cylinder body 2 is the largest and the circulation of the cooling water in the cooling pipe 3 is the best. If the ratio of the distance between two adjacent horizontal sections 301 to the height of the inner cylinder body 2 is less than 0.4, although the contact area between the cooling pipe 3 and the outer cylinder body 1 and the inner cylinder body 2 is large, the circulation of the cooling water is not good, and thus the heat dissipation effect on the cylinder body is not good; when the ratio of the distance between two adjacent horizontal sections 301 to the height of the inner cylinder body 2 exceeds 0.6, the cooling effect of the cooling water on the cylinder body is not good due to the excessive distance between the two adjacent horizontal sections 301.

[0040] See also Figure 1 , Figure 2 The water inlet end of the cooling pipe 3 and the water outlet end of the cooling pipe 3 extend out of the same side of the outer cylinder body 1 .

[0041] In this embodiment, the water inlet end of the cooling pipe 3 and the water outlet end of the cooling pipe 3 are arranged on the same side of the outer cylinder body 1, which is not only convenient for design and manufacture, but also convenient for filling and draining water into and out of the cooling pipe 3.

[0042] Furthermore, a matching groove is provided on the inner wall of the outer cylinder body 1 , and the side of the cooling pipe 3 close to the outer cylinder body 1 is matched in the matching groove, and the side of the cooling pipe 3 close to the inner cylinder body 2 is in contact with the inner cylinder body 2 .

[0043] In this embodiment, a matching groove is provided on the inner wall of the outer cylinder body 1 so that the cooling pipe 3 is arranged in the matching groove, which is conducive to limiting the cooling pipe 3 and also facilitates the installation of the outer cylinder body 1 and the inner cylinder body 2.

[0044] See also Figure 2 , the curved section 302 is a semicircular structure.

[0045] In this embodiment, the curved section 302 is configured as a semicircular structure, which will not cause pipe bending when the cooling pipe 3 is arranged, thereby not affecting the flow of cooling water in the cooling pipe 3 .

[0046] Furthermore, a matching groove is provided on the outer wall of the inner cylinder body 2 , and the side of the cooling pipe 3 close to the inner cylinder body 2 is matched in the matching groove, and the side of the cooling pipe 3 close to the outer cylinder body 1 is in contact with the outer cylinder body 1 .

[0047] In this embodiment, a matching groove is provided on the outer wall of the inner cylinder body 2 so that the cooling pipe 3 is arranged in the matching groove, which is beneficial to limit the cooling pipe 3 and facilitates the installation of the outer cylinder body 1 and the inner cylinder body 2.

[0048] See also Figure 4 A connecting pipe 303 is provided between two adjacent horizontal sections 301 , and the connecting pipe 303 and the horizontal sections 301 are perpendicular to each other.

[0049] In this embodiment, the purpose of setting the connecting pipe 303 is that when the cooling pipe 3 is blocked, the cooling water can flow in the connecting pipe 303, thereby not affecting the heat dissipation of the outer cylinder body 1 and the inner cylinder body 2.

[0050] In some embodiments, the cylinder body is cast by a mixture of iron and aluminum, or the cylinder body is cast by a mixture of stainless steel and aluminum, which has good corrosion resistance. The cylinder body involved in the present application is provided with a cooling pipe between the outer cylinder body and the inner cylinder body, so that the cylinder body has good heat conduction performance; the cylinder body involved in the present application no longer uses gray cast iron, so that the cylinder body is lighter.

[0051] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A hybrid casting cylinder for a vacuum pump, characterized in that: include: Outer cylinder (1); An inner cylinder (2) is arranged inside the outer cylinder (1) and a gap is left between the inner cylinder (2) and the outer cylinder (1); A cooling pipe (3) is arranged in the gap between the outer cylinder body (1) and the inner cylinder body (2) and is wound around the outer circumference of the inner cylinder body (2). The cooling pipe (3) has a water inlet end and a water outlet end. The water inlet end of the cooling pipe (3) and the water outlet end of the cooling pipe (3) both extend out of the outer cylinder body (1).

2. The hybrid casting cylinder for a vacuum pump according to claim 1, characterized in that: The outer cylinder body (1) has a front side surface and a rear side surface that are arranged opposite to each other. The outer cylinder body (1) also has a top surface and a bottom surface that are arranged opposite to each other. A through first matching hole (4) is provided from the top surface to the bottom surface. The first matching hole (4) is a waist-shaped hole. A through second matching hole (5) is provided from the front side surface to the rear side surface. The second matching hole (5) is a round hole. The inner cylinder body (2) has the same structure as the outer cylinder body (1). The cooling pipe (3) is arranged to avoid the second matching hole (5).

3. The hybrid casting cylinder for a vacuum pump according to claim 1, characterized in that: The cooling pipe (3) is arranged in an "S" shape between the outer cylinder body (1) and the inner cylinder body (2).

4. The hybrid casting cylinder for a vacuum pump according to claim 3, characterized in that: The cooling pipe (3) comprises: A plurality of horizontal sections (301) are arranged parallel to each other along the inner cylinder body (2) and are evenly arranged on the outer periphery of the inner cylinder body (2) along the height direction of the inner cylinder body (2); A plurality of curved sections (302) connect two adjacent horizontal sections (301) and enable the cooling pipe (3) to form a curved reciprocating structure.

5. The hybrid casting cylinder for a vacuum pump according to claim 4, characterized in that: The ratio of the distance between two adjacent horizontal sections (301) to the height of the inner cylinder (2) is 0.4 to 0.

6.

6. The hybrid casting cylinder for a vacuum pump according to claim 1, characterized in that: The water inlet end of the cooling pipe (3) and the water outlet end of the cooling pipe (3) extend out of the same side of the outer cylinder body (1).

7. The hybrid casting cylinder for a vacuum pump according to claim 1, characterized in that: A matching groove is provided on the inner wall of the outer cylinder body (1), and the side of the cooling pipe (3) close to the outer cylinder body (1) is matched in the matching groove, and the side of the cooling pipe (3) close to the inner cylinder body (2) is in contact with the inner cylinder body (2).

8. The hybrid casting cylinder for a vacuum pump according to claim 4, characterized in that: The curved section (302) is a semicircular structure.

9. The hybrid casting cylinder for a vacuum pump according to claim 1, characterized in that: A matching groove is provided on the outer wall of the inner cylinder body (2), and the side of the cooling pipe (3) close to the inner cylinder body (2) is matched in the matching groove, and the side of the cooling pipe (3) close to the outer cylinder body (1) is in contact with the outer cylinder body (1).

10. The hybrid casting cylinder for a vacuum pump according to claim 4, characterized in that: A connecting pipe (303) is provided between two adjacent horizontal sections (301), and the connecting pipe (303) and the horizontal section (301) are perpendicular to each other.

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