Circulating water type vacuum pump

Abstract

The utility model relates to the technical field of circulating water type vacuum pumps, and discloses a circulating water type vacuum pump which comprises a circulating water vacuum pump, a plurality of arc-shaped heat absorbing plates are fixedly arranged in a cylinder body serving as one part of the circulating water vacuum pump at intervals through a welding process, and the arc-shaped heat absorbing plates are arranged in the cylinder body. The arc-shaped heat absorption plate is located on the lower side of the cylinder body, has sufficient gaps for installation of the arc-shaped heat absorption plate and can make full contact with working medium water, and in addition, a heat exchange cylinder with a hollow cavity is fixedly arranged on the lower end face of the cylinder body. The structure of the cylinder body is improved, the heat absorption component is additionally arranged on the cylinder body, heat energy is transmitted to external heat conduction oil, the heat is transmitted to the fins arranged on the circulating pipe through the flowing heat conduction oil, and finally air cooling is conducted through the cooling fan, so that compared with a traditional structure, the heat dissipation capacity is better, and the service life is prolonged. And the temperature control capability of water serving as a working medium in the cylinder body is better.

Description

Technical Field

[0001] The utility model relates to the technical field of circulating water type vacuum pumps, in particular to a circulating water type vacuum pump. Background Art

[0002] The working medium of the circulating water vacuum pump is water. The vacuum pumping principle of the circulating water vacuum pump is different from that of the jet vacuum pump. It is still a centrifugal mechanical pump. The impeller rotor is eccentrically installed in the cylindrical pump casing, and its blades are forward curved. When the impeller rotates, the working water forms a water ring that swirls along the pump casing under the action of centrifugal force. Due to the eccentric position of the impeller, the water ring moves relative to the blades, causing the space volume between two adjacent blades to change periodically. The traditional circulating water vacuum pump cools the water by circulating water inside and outside the pump body, but this will cause unstable pressure inside the pump body, which is manifested in poor air outlet at the outlet end, affecting the use effect. Utility Model Content

[0003] The technical problem to be solved by the utility model is: in order to overcome the above problems, a circulating water vacuum pump is provided, which solves the above problems.

[0004] The utility model solves the technical problem by adopting the following technical solutions:

[0005] A circulating water vacuum pump comprises a circulating water vacuum pump, wherein a plurality of arc-shaped heat absorbing plates are fixedly arranged at intervals in a cylinder body which is one of the components of the circulating water vacuum pump through a welding process, the arc-shaped heat absorbing plates are located at the lower side of the cylinder body and have sufficient gaps for their installation and can fully contact with the working medium water, and a heat exchange cylinder with a hollow cavity is fixedly arranged on the lower end surface of the cylinder body, the heat exchange cylinder forms a circulation passage with the pump through a circulation pipe, and a fluid heat absorbing medium is arranged in the heat exchange cylinder.

[0006] Preferably, a sieve-hole brass column is fixedly provided in the heat exchange cylinder, and the lower end of the arc-shaped heat absorbing plate passes through the cylinder body and is connected to the sieve-hole brass column to facilitate heat transfer to the sieve-hole brass column.

[0007] Preferably, heat transfer oil is provided in the heat exchange cylinder and the circulation pipe.

[0008] Preferably, heat-absorbing nanofluid is provided in the heat exchange cylinder and the circulation pipe.

[0009] Preferably, heat dissipation fins are arranged at intervals on the circulation pipe, and a frame provided with a heat dissipation fan is fixedly arranged on the circulation pipe, and the heat dissipation fan blows air directly toward the heat dissipation fins to cool the heat transfer oil or heat absorbing nanofluid flowing in the circulation pipe.

[0010] The advantages and positive effects of the utility model are as follows: by modifying the structure of the cylinder body and adding a heat-absorbing component to the cylinder body, heat energy is transferred to the external heat-conducting oil, and the heat is transferred to the fins arranged on the circulation pipe through the flowing heat-conducting oil and finally air-cooled by the cooling fan. Compared with the traditional structure, it has better heat dissipation capacity and better temperature control capacity for water as the working medium in the cylinder body, so that the circulating water vacuum pump can maintain long-term continuous and stable output under high pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0012] Figure 1 It is a structural schematic diagram of an existing pump body;

[0013] Figure 2 yes Figure 1 Schematic diagram of the internal structure;

[0014] Figure 3 It is an enlarged structural schematic diagram of the cylinder body 17 of the utility model modification;

[0015] Figure 4 yes Figure 3 Schematic diagram of the structure of the middle arc heat absorbing plate 11 and the sieve brass column 19.

[0016] The symbols in the accompanying drawings are described as follows: 11, arc-shaped heat absorbing plate; 12, heat exchange cylinder; 13, circulation pipe; 14, pump; 15, cooling fan; 16, eccentric impeller; 17, cylinder body; 18, circulating water vacuum pump; 19, sieve brass column. DETAILED DESCRIPTION

[0017] Now, the utility model is further described in detail in conjunction with the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, so they only show the components related to the utility model. The following is a further detailed description of the embodiments of the utility model in conjunction with the accompanying drawings:

[0018] like Figure 1-4 As shown, the circulating water vacuum pump described in the utility model includes a circulating water vacuum pump 18, wherein a plurality of arc-shaped heat absorbing plates 11 are fixedly arranged at intervals in a cylinder body 17 which is one of the components of the circulating water vacuum pump 18 through a welding process, and the arc-shaped heat absorbing plates 11 are located at the lower side of the cylinder body 17 and have sufficient gaps for their installation and can fully contact with the working medium water. In addition, a heat exchange cylinder 12 with a hollow cavity is fixedly arranged on the lower end surface of the cylinder body 17, and the heat exchange cylinder 12 forms a circulation passage with a pump 14 through a circulation pipe 13, and a fluid heat absorbing medium is arranged in the heat exchange cylinder 12.

[0019] Preferably, a sieve-mesh brass column 19 is fixedly provided in the heat exchange cylinder 12 , and the lower end of the arc-shaped heat absorbing plate 11 passes through the cylinder body 17 and is connected to the sieve-mesh brass column 19 , so as to transfer heat to the sieve-mesh brass column 19 .

[0020] Preferably, heat transfer oil is provided in the heat exchange cylinder 12 and the circulation pipe 13 .

[0021] Preferably, heat-absorbing nanofluid is provided in the heat exchange cylinder 12 and the circulation pipe 13 .

[0022] Preferably, heat dissipation fins are arranged at intervals on the circulation pipe 13 , and a frame provided with a heat dissipation fan 15 is fixedly arranged on the circulation pipe 13 , and the heat dissipation fan 15 blows air directly toward the heat dissipation fins to cool the heat transfer oil or heat absorbing nanofluid flowing in the circulation pipe 13 .

[0023] In specific implementation, when the working medium water adheres to the inner wall of the cylinder body 17 to form a water ring under the action of the eccentric impeller 16, due to the eccentricity of the eccentric impeller 16, the space between the bottom and the water ring is large and the space on both sides is small. In this way, vacuuming is achieved by sucking air at the lower end of the cylinder body 17 and exhausting air at the side. Since the compressed air causes heat energy to be released, long-term use will cause the water to heat up and thus affect the air compression amount. The arc-shaped heat absorbing plate 11 in direct contact with the water ring absorbs heat and dissipates heat through the heat dissipation circulation system composed of the heat exchange cylinder 12, the circulation pipe 13, the heat dissipation fan 15, and the pump 14. Compared with the traditional heat dissipation through water circulation, the pressure in the pump is more stable and the water consumption is reduced.

[0024] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive. Therefore, the present invention is not limited to the embodiments described in the specific implementation manner. Any other implementation manners derived by those skilled in the art based on the technical solution of the present invention also fall within the scope of protection of the present invention.

Claims

1. A circulating water vacuum pump, comprising a circulating water vacuum pump (18), characterized in that: A plurality of arc-shaped heat absorbing plates (11) are fixedly disposed at intervals by welding in a cylinder body (17) which is one of the components of the circulating water vacuum pump (18); the arc-shaped heat absorbing plates (11) are located at the lower side of the cylinder body (17) and have sufficient space for installation and can fully contact with the working medium water; in addition, a heat exchange cylinder (12) having a hollow cavity is fixedly disposed on the lower end surface of the cylinder body (17); the heat exchange cylinder (12) forms a circulation passage with the pump (14) through a circulation pipe (13); and a fluid heat absorbing medium is disposed in the heat exchange cylinder (12).

2. The circulating water vacuum pump according to claim 1, characterized in that: A sieve-hole brass column (19) is fixedly provided in the heat exchange cylinder (12); the lower end of the arc-shaped heat absorption plate (11) passes through the cylinder body (17) and is connected to the sieve-hole brass column (19), so as to facilitate the transfer of heat to the sieve-hole brass column (19).

3. The circulating water vacuum pump according to claim 2, characterized in that: Heat transfer oil is provided in the heat exchange cylinder (12) and the circulation pipe (13).

4. The circulating water vacuum pump according to claim 2, characterized in that: Heat-absorbing nanofluid is provided in the heat exchange cylinder (12) and the circulation pipe (13).

5. The circulating water vacuum pump according to claim 3 or 4, characterized in that: Heat dissipation fins are arranged at intervals on the circulation pipe (13), and a frame provided with a heat dissipation fan (15) is fixedly arranged on the circulation pipe (13), the heat dissipation fan (15) blowing air directly towards the heat dissipation fins, so as to cool the heat transfer oil or heat absorbing nanofluid flowing in the circulation pipe (13).

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