Roots blower shell structure

Abstract

The utility model relates to the technical field of fan shells, in particular to a Roots fan shell structure which comprises an outer shell part, an inner shell part, a flange pipe fitting, an end plate and a driving box shell part, receding holes are formed in the middle positions of the top face and the bottom face of the outer shell part, and the inner shell part is connected into the outer shell part in a sliding and sleeved mode. Cooling liquid channels are formed between the two sides of the inner shell part and the outer shell part, and flange connecting parts are arranged on the bottom face and the top face of the inner shell part. According to the utility model, through the arrangement of the outer shell part and the inner shell part, the top end of the inner shell part is the air inlet end, and the bottom end of the inner shell part is the air outlet end, during use, cooling liquid is input into the cooling liquid channel from the liquid inlet, flows to the top end of the cooling liquid channel from the bottom end of the cooling liquid channel, and then flows out from the liquid outlet, so that heat dissipation of the inner shell part is realized; therefore, the temperature of the inner shell part is guaranteed, deformation of the inner shell part caused by temperature rise is reduced, and the outer shell part and the inner shell part are convenient to cast and form through detachable arrangement of the outer shell part and the inner shell part.

Description

Technical Field

[0001] The utility model relates to the technical field of blower casings, in particular to a Roots blower casing structure. Background Art

[0002] Roots blower is a positive displacement blower with impeller end face, front and rear end covers of the blower. The principle is that it is a rotary compressor that uses two blade-shaped rotors to move relative to each other in the cylinder to compress and transport gas. This blower has a simple structure and is easy to manufacture. The gaps between the impellers, the impellers and the casing, and the impellers and the wall panels are extremely small and do not contact each other. During operation, a vacuum state is formed at the air inlet, and air enters the air inlet chamber under the action of atmospheric pressure. Then, two blades of each impeller form a sealed chamber with the wall panel and the casing. During the rotation of the impeller, the air in the air inlet chamber is continuously brought to the exhaust chamber by the sealed chamber formed by the two blades. Because the impellers in the exhaust chamber are meshed with each other, the air between the two blades is squeezed out. With this continuous operation, the air is continuously transported from the air inlet to the outlet. When running for a long time and with a large load, the extrusion and compression of the air at the outlet end will accumulate heat at the outlet end, which can easily cause the casing to heat up, thereby causing the casing to expand and deform, thereby affecting the gap between the casing and the impeller. Therefore, a Roots blower casing structure with better heat dissipation is proposed. Utility Model Content

[0003] The purpose of the utility model is to provide a Roots blower housing structure to solve the problems raised in the above background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A Roots blower housing structure, comprising:

[0006] The shell has avoidance holes at the middle positions of the top and bottom surfaces;

[0007] An inner shell member is slidably sleeved inside the outer shell member, cooling liquid channels are formed between both sides of the inner shell member and the outer shell member, and flange connection portions are provided on the bottom and top surfaces of the inner shell member;

[0008] There are two flange pipe fittings, which are used to connect with the flange connection part on the inner shell;

[0009] An end plate is located at one end of the outer shell, the end plate being detachably connected to the outer shell, a side wall of the end plate corresponding to the bottom ends of the two cooling liquid channels being provided with liquid inlets, and a side wall of the end plate corresponding to the top ends of the cooling liquid channels being provided with liquid outlets;

[0010] The driving box shell component is detachably fixed to the other end of the outer shell component.

[0011] Furthermore, multiple closed grooves are equidistantly provided on the inner side walls of both sides of the outer shell, multiple convex rods are fixedly connected to the outer side walls of both ends of the inner shell, and the ends of two adjacent convex rods are staggered, a gap is provided between the outer side wall of the inner shell and the inner side wall of the outer shell, the convex rods fit into the closed grooves, and the top and bottom surfaces of the inner shell are fixedly connected to partition rods.

[0012] Furthermore, liquid passage grooves are provided on both inner walls of the outer shell located on one side of the closed groove.

[0013] Furthermore, both ends of the outer shell are provided with connecting ends, a side wall of the connecting end is provided with a plurality of flange holes, and the connecting end is used to connect with the end plate and the drive box shell.

[0014] Furthermore, a plurality of threaded blind holes are provided on the flange connection portion, and the flange pipe fittings are connected to the threaded blind holes through nuts.

[0015] Further, the end face of the flange connection part is located on the inner side of the multiple threaded blind holes and is provided with an inner groove three, the end face of the flange connection part is located on the outer side of the multiple threaded blind holes and is provided with an inner groove four, one side of the connection end part is located on the inner side of the flange hole and is provided with an inner groove two, both ends of the inner shell part are provided with an inner groove five, the inner side wall of the avoidance hole is provided with an inner groove one, and sealing strips are installed in the inner groove one, inner groove two, inner groove three, inner groove four and inner groove five, and one end of the flange pipe fitting is fixedly connected to an extrusion ring, and the extrusion ring is used to extrude the sealing strip in the inner groove one.

[0016] Furthermore, the outer side wall of the outer shell is provided with a plurality of ribs, and the ribs are used to increase the strength of the outer shell and the surface area of ​​the outer shell.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. Through the arrangement of the outer shell and the inner shell, the top end of the inner shell is the air inlet end, and the bottom end of the inner shell is the air outlet end. When in use, the coolant is input into the cooling liquid channel from the liquid inlet, and flows from the bottom end of the cooling liquid channel to the top end of the cooling liquid channel, and then flows out from the liquid outlet to achieve heat dissipation of the inner shell, thereby ensuring the temperature of the inner shell and reducing the deformation of the inner shell caused by temperature rise. In addition, the outer shell and the inner shell are detachable, so that the outer shell and the inner shell are easy to cast. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the outer shell and the end plate in the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the outer shell and inner shell of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the flange pipe fitting in the utility model;

[0023] Figure 5 This is a schematic diagram of the bottom structure of the cooling liquid channel in the utility model;

[0024] Figure 6 It is a schematic diagram of the structure of the outer shell in the utility model.

[0025] In the figure: 100, outer shell; 110, avoidance hole; 111, inner groove one; 120, connecting end; 121, inner groove two; 130, liquid groove; 140, closed groove; 200, inner shell; 210, flange connection; 211, inner groove three; 212, inner groove four; 213, threaded blind hole; 220, inner groove five; 230, protruding rod; 240, separating rod; 300, flange pipe fitting; 310, extrusion ring; 400, end plate; 410, liquid inlet; 420, liquid outlet; 500, drive box shell; 600, cooling liquid channel. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figures 1 to 6 In the embodiment of the present invention, a Roots blower housing structure includes an outer shell 100, an inner shell 200, a flange pipe 300, an end plate 400 and a drive box shell 500. The middle position of the top and bottom surfaces of the outer shell 100 is provided with a avoidance hole 110. The inner shell 200 is slidably sleeved inside the outer shell 100. Cooling liquid channels 600 are formed between both sides of the inner shell 200 and the outer shell 100. The bottom and top surfaces of the inner shell 200 are provided with flange connection parts 210. The flange pipe 300 is provided with a flange connection part 210. There are two 0s, two flange pipe fittings 300 are used to connect with the flange connection part 210 on the inner shell 200, the end plate 400 is located at one end of the outer shell 100, the end plate 400 and the outer shell 100 are detachably connected, and a liquid inlet 410 is provided on one side wall of the end plate 400 corresponding to the bottom end of the two cooling liquid channels 600, and a liquid outlet 420 is provided on one side wall of the end plate 400 corresponding to the top end of the cooling liquid channel 600, and the drive box shell 500 is detachably fixed to the other end of the outer shell 100.

[0028] Specifically, the top end of the inner shell 200 is the air inlet end, and the bottom end of the inner shell 200 is the air outlet end. When in use, the coolant is input into the cooling liquid channel 600 from the liquid inlet 410, and flows from the bottom end of the cooling liquid channel 600 to the top end of the cooling liquid channel 600, and then flows out from the liquid outlet 420, thereby dissipating heat for the inner shell 200, thereby ensuring the temperature of the inner shell 200 and reducing the deformation of the inner shell 200 caused by temperature rise. The arrangement of the outer shell 100 and the end plate 400 facilitates the disassembly and assembly of the inner shell 200.

[0029] Example 1

[0030] like Figures 4-6 As shown, in this embodiment, the inner side walls of both sides of the outer shell 100 are equidistantly provided with a plurality of closed grooves 140, the outer side walls at both ends of the inner shell 200 are fixedly connected with a plurality of convex rods 230, and the ends of two adjacent convex rods 230 are staggered, a gap is provided between the outer side wall of the inner shell 200 and the inner side wall of the outer shell 100, the convex rods 230 fit in the closed groove 140, the top and bottom surfaces of the inner shell 200 are fixedly connected with dividing rods 240, and the inner walls of both sides of the outer shell 100 are located on one side of the closed groove 140. Liquid-passing grooves 130 are provided on the inner walls of both sides of the outer shell 100, and connecting ends 120 are provided at both ends of the outer shell 100. A plurality of flange holes are provided on one side wall of the connecting end 120. The connecting end 120 is used to connect with the end plate 400 and the drive box shell 500. A plurality of threaded blind holes 213 are provided on the flange connecting part 210, and the flange pipe fitting 300 is connected to the threaded blind holes 213 through nuts.

[0031] In this embodiment, during installation, the inner shell 200 is inserted into the outer shell 100, and the protruding rod portion 230 is slid into the closed groove 140 at the corresponding position. By misaligning the two adjacent protruding rod portions 230 and cooperating with the end plate 400 and the drive box shell 500 to seal the two ends of the outer shell 100, two cooling liquid channels 600 are formed between the outer shell 100 and the inner shell 200, and the cooling liquid channels 600 are serpentine from the bottom to the top, thereby facilitating the flow of coolant from the bottom to the top of the cooling liquid channels 600, thereby dissipating heat from the bottom end of the inner shell 200 where heat is heavier, thereby improving the heat dissipation effect of the inner shell 200.

[0032] like Figures 3 to 6As shown, in this embodiment, the end surface of the flange connection part 210 is located on the inner side of the multiple threaded blind holes 213 and is provided with an inner groove three 211, the end surface of the flange connection part 210 is located on the outer side of the multiple threaded blind holes 213 and is provided with an inner groove four 212, one side of the connecting end part 120 is located on the inner side of the flange hole and is provided with an inner groove two 121, both ends of the inner shell part 200 are provided with inner groove five 220, the inner side wall of the avoidance hole 110 is provided with an inner groove one 111, and sealing strips are installed in the inner groove one 111, the inner groove two 121, the inner groove three 211, the inner groove four 212 and the inner groove five 220, one end of the flange pipe fitting 300 is fixedly connected to the extrusion ring 310, the extrusion ring 310 is used to extrude the sealing strip in the inner groove one 111, and the outer side wall of the outer shell part 100 is provided with a plurality of ribs, which are used to increase the strength of the outer shell part 100 and the surface area of ​​the outer shell part 100.

[0033] During specific implementation, the sealing between the end plate 400, the drive box shell 500 and the outer shell 100 is improved by the inner groove 2 121 and the sealing strip therein, thereby preventing the coolant in the cooling liquid channel 600 from leaking out. The sealing between the extrusion ring 310 and the avoidance hole 110 is improved by the inner groove 111 and the sealing strip therein, thereby preventing the coolant from leaking out from between the avoidance hole 110 and the flange pipe 300. The setting of the inner groove 311 and the inner groove 4 212 prevents the air flow from leaking from the flange pipe 300 and the inner shell 200.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0035] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A Roots blower housing structure, characterized in that: include: The housing (100) is provided with avoidance holes (110) at the middle positions of the top and bottom surfaces; An inner shell (200) is slidably sleeved inside the outer shell (100), cooling liquid channels (600) are formed between both sides of the inner shell (200) and the outer shell (100), and flange connection portions (210) are provided on the bottom and top surfaces of the inner shell (200); There are two flange pipe fittings (300), and the two flange pipe fittings (300) are used to connect with the flange connection portion (210) on the inner shell (200); An end plate (400) is located at one end of the outer shell (100), and the end plate (400) is detachably connected to the outer shell (100). A side wall of the end plate (400) is provided with a liquid inlet (410) at the bottom end corresponding to the two cooling liquid channels (600), and a side wall of the end plate (400) is provided with a liquid outlet (420) at the top end corresponding to the cooling liquid channel (600). The driving box shell member (500) is detachably fixed to the other end of the outer shell member (100).

2. A Roots blower housing structure according to claim 1, characterized in that: The inner side walls of both sides of the outer shell (100) are equidistantly provided with a plurality of closed grooves (140); the outer side walls at both ends of the inner shell (200) are fixedly connected with a plurality of convex rods (230), and the ends of two adjacent convex rods (230) are staggered; a gap is provided between the outer side wall of the inner shell (200) and the inner side wall of the outer shell (100); the convex rods (230) fit in with the closed grooves (140); and the top and bottom surfaces of the inner shell (200) are fixedly connected with separation rods (240).

3. A Roots blower housing structure according to claim 2, characterized in that: Liquid passage grooves (130) are provided on both inner walls of the outer shell (100) on one side of the closed groove (140).

4. The Roots blower housing structure according to claim 2, characterized in that: Both ends of the housing (100) are provided with connecting ends (120), a side wall of the connecting end (120) is provided with a plurality of flange holes, and the connecting end (120) is used to connect with the end plate (400) and the drive box housing (500).

5. The Roots blower housing structure according to claim 4, characterized in that: A plurality of threaded blind holes (213) are provided on the flange connection portion (210), and the flange pipe fitting (300) is connected to the threaded blind holes (213) via nuts.

6. The Roots blower housing structure according to claim 5, characterized in that: The end surface of the flange connection part (210) is located inside the multiple threaded blind holes (213) and is provided with an inner groove three (211); the end surface of the flange connection part (210) is located outside the multiple threaded blind holes (213) and is provided with an inner groove four (212); one side of the connection end (120) is located inside the flange hole and is provided with an inner groove two (121); both ends of the inner shell part (200) are provided with inner groove five (220); the inner side wall of the avoidance hole (110) is provided with an inner groove one (111); sealing strips are installed in the inner groove one (111), the inner groove two (121), the inner groove three (211), the inner groove four (212) and the inner groove five (220); one end of the flange pipe fitting (300) is fixedly connected with an extrusion ring (310); the extrusion ring (310) is used to extrude the sealing strip inside the inner groove one (111).

7. The Roots blower housing structure according to claim 6, characterized in that: The outer side wall of the outer shell (100) is provided with a plurality of ribs, and the ribs are used to increase the strength of the outer shell (100) and the surface area of ​​the outer shell (100).

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