Roots vacuum pump with water-cooling heat dissipation device

Abstract

The utility model relates to the technical field of Roots vacuum pumps, in particular to a Roots vacuum pump with a water-cooling heat dissipation device, which comprises a base, a heat preservation housing, a Roots vacuum pump body, a heat preservation header pipe, a water-cooling branch pipe and a heat conduction strip. The Roots vacuum pump body is arranged between the base and the heat preservation cover shell, cold water is pumped in from the heat preservation header pipe on one side, exchanges heat with the Roots vacuum pump through the water cooling branch pipes and then converges to the heat preservation header pipe on the other side to be discharged, the spiral water cooling branch pipes improve the heat exchange range, and the heat conduction strips made of heat conduction silica gel materials improve the heat conduction effect. The water cooling branch pipes respectively cool all parts of the roots vacuum pump body, heat of the roots vacuum pump body can be taken away more quickly, water cooling efficiency is improved, the heat preservation layer and the heat preservation sleeve can reduce cold loss, cold loss is greatly reduced, noise is reduced, and the roots vacuum pump is prevented from being overheated.

Description

Technical Field

[0001] The utility model relates to the technical field of Roots vacuum pumps, in particular to a Roots vacuum pump with a water cooling device. Background Art

[0002] Roots vacuum pump is a variable displacement vacuum pump equipped with two blade-shaped rotors rotating synchronously in opposite directions. There is a small gap between the rotors and between the rotors and the inner wall of the pump casing, and they do not touch each other. Its structure and working principle are similar to those of Roots blower. When working, its suction port is connected to the vacuum container or the main pump of the vacuum system. Roots vacuum pump generates heat due to the transportation and compression of gas, and this heat must be transferred from the rotor to the casing and dissipated;

[0003] Chinese patent announcement No. CN211777910U discloses a circulating water vacuum pump water cooling device, which can continuously dissipate heat on the external surface of the vacuum pump through the cooperation between the guide pipe and the water valve, thereby improving the heat dissipation efficiency of the vacuum pump during operation, avoiding overheating of the vacuum pump as much as possible, and indirectly improving the working efficiency of the internal equipment. The guide pipe is distributed in an "S" shape, relying on a longer guide stroke to maintain the working efficiency of water cooling and heat dissipation. However, in the above technology, the heat absorption capacity of the cold water inside the guide pipe decreases with the increase of the guide stroke, limiting the heat dissipation effect of the vacuum pump, and the exposed guide pipe is seriously affected by the heat exchange environment. In a high temperature environment, the heat exchange effect will be reduced. For this reason, the utility model provides a Roots vacuum pump with a water-cooled heat dissipation device to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a Roots vacuum pump with a water-cooled heat dissipation device, which solves the technical problems that the heat absorption capacity of cold water inside the guide tube in the water cooling device of a traditional circulating water vacuum pump decreases with the increase of the guide stroke, limiting the heat dissipation effect of the vacuum pump, and the exposed guide tube is seriously affected by the heat exchange environment, which will reduce the heat exchange effect in a high temperature environment.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A Roots vacuum pump with a water-cooling heat dissipation device comprises a base, a heat-insulating cover shell, a Roots vacuum pump body, a heat-insulating main pipe, a water-cooling branch pipe and a heat-conducting strip, wherein the upper side of the base is detachably connected with the heat-insulating cover shell, the Roots vacuum pump body is arranged between the base and the heat-insulating cover shell, the heat-insulating main pipe is arranged on both sides of the heat-insulating cover shell, a plurality of water-cooling branch pipes are wound around the outer side of the Roots vacuum pump body, both ends of the water-cooling branch pipes pass through the gap between the base and the heat-insulating cover shell and are connected with the adjacent heat-insulating main pipes, and a heat-conducting strip is clamped and fixed between the water-cooling branch pipe and the Roots vacuum pump body.

[0007] Beneficial effects: For the Roots vacuum pump with a water-cooling heat dissipation device, cold water is pumped in from the insulation main pipe on one side, passes through various water-cooling branches and exchanges heat with the Roots vacuum pump, and then converges to the insulation main pipe on the other side for discharge. The spiral water-cooling branches increase the heat exchange range, and the heat-conducting strips made of heat-conducting silicone material increase the heat conduction effect. Multiple water-cooling branches cool down various parts of the Roots vacuum pump body respectively, which can take away the heat of the Roots vacuum pump body more quickly and improve the water cooling efficiency. The insulation layer and the insulation sleeve can reduce the loss of cold, greatly reduce the loss of cold, reduce the noise, and prevent the Roots vacuum pump from overheating.

[0008] Furthermore, the heat-conducting strip is made of a heat-conducting silicone material, and an arc-shaped groove is provided on one side of the heat-conducting strip, and the arc-shaped groove is fitted on the outer wall of the water-cooling branch pipe.

[0009] Furthermore, a plurality of second slots are provided on both sides of the heat-insulating cover shell, corresponding first slots are provided on both sides of the base corresponding to the second slots, and gaps are formed between adjacent second slots and first slots to allow water-cooling branches to pass through.

[0010] Furthermore, an insulation layer is fixedly bonded to the inner wall of the insulation cover shell, and the insulation layer is made of rock wool or glass fiber wool. An insulation sleeve is provided on the outer side of the insulation main pipe, and the insulation sleeve is made of polyurethane material.

[0011] Furthermore, two triangular brackets are fixed on the lower side of the Roots vacuum pump body, and the triangular brackets are fixed to the base with screws. The output end and the input end of the Roots vacuum pump body are connected with a vacuum pipe, and side guard plates are fixed on the upper sides of both ends of the base. A circular groove is provided in the middle of the side guard plate, and a vacuum pipe is embedded in the circular groove.

[0012] Furthermore, the four upper corners of the base are all fixedly connected with a first perforated plate, the four bottom corners of the heat-insulating cover are all fixedly connected with a second perforated plate, and the adjacent first perforated plates and second perforated plates are fixed with screws. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is an appearance diagram of a Roots vacuum pump with a water-cooling heat dissipation device according to the utility model;

[0014] Figure 2 The utility model is a Roots vacuum pump with a water cooling device. Figure 1 A magnified view of the structure at A;

[0015] Figure 3 This is a cross-sectional view of a Roots vacuum pump with a water-cooling heat dissipation device according to the utility model;

[0016] Figure 4The utility model is a schematic diagram of the arrangement structure of water-cooling branch pipes in a Roots vacuum pump with a water-cooling heat dissipation device.

[0017] Figure numerals: 1. base; 11. first slot; 12. side guard plate; 13. first perforated plate; 2. thermal insulation cover; 21. second slot; 22. thermal insulation layer; 23. second perforated plate; 3. Roots vacuum pump body; 31. triangular bracket; 32. vacuum pipe; 4. thermal insulation main pipe; 41. thermal insulation sleeve; 5. water-cooling branch pipe; 6. thermal conductive strip; 61. arc-shaped groove. DETAILED DESCRIPTION

[0018] The following is only a preferred embodiment of the present invention, and the protection scope is not limited to this embodiment. All technical solutions under the concept of the present invention should belong to the protection scope of the present invention. At the same time, it should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

[0019] See Figures 1 to 4 As shown, a Roots vacuum pump with a water-cooling heat dissipation device comprises a base 1, a heat-insulating cover shell 2, a Roots vacuum pump body 3, a heat-insulating main pipe 4, a water-cooling branch pipe 5 and a heat-conducting strip 6, wherein the upper side of the base 1 is detachably connected to the heat-insulating cover shell 2, the upper four corners of the base 1 are fixedly connected to a first perforated plate 13, the bottom four corners of the heat-insulating cover shell 2 are fixedly connected to a second perforated plate 23, and the first perforated plate 13 and the second perforated plate 23 are fixedly connected by screws;

[0020] Specifically, after the heat-insulating cover shell 2 is covered on the upper side of the base 1, a heat-insulating cavity can be formed between the two. Bolts are inserted into the holes of the first perforated plate 13 and the second perforated plate 23, and the bolts pass through the first perforated plate 13 and the second perforated plate 23 and then are threadedly connected to nuts, thereby connecting the heat-insulating cover shell 2 and the base 1 as a whole.

[0021] Furthermore, a Roots vacuum pump body 3 is arranged between the base 1 and the heat-insulating cover shell 2, two triangular brackets 31 are fixed to the lower side of the Roots vacuum pump body 3, and the triangular brackets 31 are screwed to the base 1, and the output end and the input end of the Roots vacuum pump body 3 are both connected to a vacuum pipe 32, and side guard plates 12 are fixed to the upper sides of both ends of the base 1, and a circular groove is provided in the middle of the side guard plate 12, and a vacuum pipe 32 is embedded in the circular groove;

[0022] Specifically, the triangular bracket 31 can provide support for the Roots vacuum pump body 3. After the Roots vacuum pump body 3 is fixed, the vacuum tube 32 is inserted along the circular groove. The vacuum tube 32 can be screwed to the output end and the input end of the Roots vacuum pump body 3, which greatly facilitates the assembly process. After the two vacuum tubes 32 pass through the circular groove, they are used for external filtering equipment and the vacuumed container respectively.

[0023] Furthermore, both sides of the insulation shell 2 are provided with insulation main pipes 4, the inner wall of the insulation shell 2 is fixedly bonded with an insulation layer 22, the insulation layer 22 is made of rock wool or glass fiber wool, and the outer side of the insulation main pipe 4 is provided with an insulation sleeve 41, the insulation sleeve 41 is made of polyurethane material;

[0024] Specifically, the insulation layer 22 and the insulation sleeve 41 can prevent the cold from leaking out, so that the insulation space is always in a low-temperature environment, which increases the temperature difference between the inside and outside of the Roots vacuum pump housing, which is beneficial for heat to be transferred from the rotor to the housing and dissipated. In addition, the insulation layer 22 has a certain sound insulation effect, which can reduce noise pollution.

[0025] Further, a plurality of water-cooling branch pipes 5 are wound around the outer side of the Roots vacuum pump body 3, and both ends of the water-cooling branch pipes 5 pass through the gap between the base 1 and the thermal insulation cover shell 2 to communicate with the adjacent thermal insulation main pipe 4, and a plurality of second card slots 21 are provided on both sides of the thermal insulation cover shell 2, and corresponding first card slots 11 are provided on both sides of the base 1 corresponding to the second card slots 21, and a gap is formed between the adjacent second card slots 21 and the first card slots 11 to allow the water-cooling branch pipes 5 to pass through;

[0026] Specifically, after the heat-insulating cover shell 2 and the base 1 are connected as one, the adjacent second slots 21 and the first slots 11 form a circular structure, which is compatible with the water-cooling branch pipe 5 and can play a role of limiting and isolating. The water-cooling branch pipe 5 is spirally wrapped around the outer periphery of the Roots vacuum pump body 3, thereby increasing the heat exchange area and comprehensively cooling the Roots vacuum pump body 3. It is worth noting that in order to ensure that the cold water in the water-cooling branch pipe 5 always has a good heat exchange capacity, the number of spiral turns of the water-cooling branch pipe 5 should not be too many.

[0027] Furthermore, a heat conducting strip 6 is clamped and fixed between the water cooling branch pipe 5 and the Roots vacuum pump body 3. The heat conducting strip 6 is made of a heat conducting silicone material. An arc groove 61 is provided on one side of the heat conducting strip 6, and the arc groove 61 is attached to the outer wall of the water cooling branch pipe 5.

[0028] Specifically, the application of heat-conducting silicone material increases the heat-conducting contact area between the water-cooling branch pipe 5 and the shell of the Roots vacuum pump body 3, thereby greatly improving the heat exchange effect. The arc-shaped groove 61 fits the water-cooling branch pipe 5, which plays the role of correcting the position and increasing the contact surface;

[0029] Optionally, the water cooling branch pipe 5 can be made of a copper pipe or stainless steel material, which has good thermal conductivity;

[0030] Preferably, the side of the heat conducting strip 6 away from the arc-shaped groove 61 is adapted to the outer wall structure of the Roots vacuum pump body 3, and the width of the heat conducting strip 6 can be set to be larger than the diameter of the water-cooling branch pipe 5 to maximize the heat conduction effect.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A Roots vacuum pump with a water cooling device, characterized in that: The invention comprises a base (1), a heat-insulating cover (2), a Roots vacuum pump body (3), a heat-insulating main pipe (4), a water-cooling branch pipe (5) and a heat-conducting strip (6); the upper side of the base (1) is detachably connected to the heat-insulating cover (2); the Roots vacuum pump body (3) is arranged between the base (1) and the heat-insulating cover (2); the heat-insulating main pipe (4) is arranged on both sides of the heat-insulating cover (2); a plurality of water-cooling branch pipes (5) are wound around the outer side of the Roots vacuum pump body (3); both ends of the water-cooling branch pipes (5) pass through the gap between the base (1) and the heat-insulating cover (2) and are connected to the adjacent heat-insulating main pipe (4); and a heat-conducting strip (6) is clamped and fixed between the water-cooling branch pipe (5) and the Roots vacuum pump body (3).

2. The Roots vacuum pump with a water cooling device according to claim 1, characterized in that: The heat-conducting strip (6) is made of a heat-conducting silicone material. An arc-shaped groove (61) is provided on one side of the heat-conducting strip (6), and the arc-shaped groove (61) is fitted on the outer wall of the water-cooling branch pipe (5).

3. The Roots vacuum pump with a water cooling device according to claim 1, characterized in that: A plurality of second slots (21) are provided on both sides of the heat-insulating cover shell (2), corresponding first slots (11) are provided on both sides of the base (1) corresponding to the second slots (21), and gaps are formed between adjacent second slots (21) and first slots (11) to allow the water-cooling branch pipe (5) to pass through.

4. The Roots vacuum pump with a water cooling device according to claim 1, characterized in that: The inner wall of the thermal insulation shell (2) is fixedly bonded with a thermal insulation layer (22), the thermal insulation layer (22) is made of rock wool or glass fiber wool, and the outer side of the thermal insulation main pipe (4) is provided with a thermal insulation sleeve (41), the thermal insulation sleeve (41) is made of polyurethane material.

5. The Roots vacuum pump with a water cooling device according to claim 1, characterized in that: Two triangular brackets (31) are fixed on the lower side of the Roots vacuum pump body (3), and the triangular brackets (31) are fixed to the base (1) by screws. The output end and the input end of the Roots vacuum pump body (3) are both connected to a vacuum pipe (32). Side guard plates (12) are fixed on the upper sides of both ends of the base (1), and a circular groove is provided in the middle of the side guard plate (12), and the vacuum pipe (32) is embedded in the circular groove.

6. The Roots vacuum pump with a water cooling device according to claim 1, characterized in that: The four upper corners of the base (1) are all fixedly connected to a first perforated plate (13), the four bottom corners of the heat-insulating cover (2) are all fixedly connected to a second perforated plate (23), and the adjacent first perforated plates (13) and second perforated plates (23) are fixedly fixed by screws.

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