A gear pump for high-efficiency production of dimer acid

Abstract

This utility model relates to the field of gear pumps, and more particularly to a high-efficiency gear pump for the production of dimer acid. The technical problem this utility model aims to solve is to provide a high-efficiency gear pump for the production of dimer acid that possesses efficient, uniform, and low-loss heating and heat preservation capabilities, overcomes the thermal resistance limitations of traditional shell heat transfer, and reduces heat loss. A high-efficiency gear pump for the production of dimer acid includes a pump body, within which a set of intermeshing circular arc gears for pumping the medium is rotatably mounted; the pump body includes a front cover, a rear cover, and a housing, which are sequentially fixed together by bolts; a heating component for heating and heat preservation of the housing is provided on the outer surface of the housing. This utility model achieves the effects of efficient, uniform, and low-loss heating and heat preservation capabilities, overcomes the thermal resistance limitations of traditional shell heat transfer, and reduces heat loss.

Description

Technical Field

[0001] This utility model relates to the field of gear pumps, and in particular to a high-efficiency gear pump for the production of dimer acids. Background Technology

[0002] In the efficient and continuous production of dimer acids and their derivatives, their high viscosity, easy solidification, and temperature sensitivity place stringent requirements on the delivery pumps. The materials must be maintained at specific high temperatures to ensure flowability, prevent blockages, and guarantee process stability. Traditional gear pumps, which use external heating or jacketed heating methods, have significant drawbacks. Heat transfer must overcome the thermal resistance of the casing, resulting in low thermal efficiency and uneven temperature distribution. Furthermore, traditional insulation methods are insufficient, leading to severe heat loss. Simultaneously, poor temperature control accuracy and lag response make it difficult to meet precise temperature control requirements. Therefore, there is an urgent need to develop a gear pump for the efficient production of dimer acids that possesses efficient, uniform, and low-loss heating and insulation capabilities, overcomes the limitations of traditional casing heat transfer due to thermal resistance, and reduces heat loss. Utility Model Content

[0003] In order to overcome the shortcomings of traditional gear pumps, which require overcoming the thermal resistance of the shell to transfer heat, resulting in low thermal efficiency and uneven temperature transfer, and the serious heat loss due to insufficient insulation, this utility model aims to provide a high-efficiency gear pump for dimer acid production that has efficient, uniform, and low-loss heating and insulation capabilities, overcomes the thermal resistance limitations of traditional shell heat transfer, and reduces heat loss.

[0004] This utility model is achieved by the following specific technical means:

[0005] A high-efficiency gear pump for the production of dimer acid includes a pump body, in which a set of intermeshing circular arc gears for pumping media is rotatably mounted; the pump body includes a front cover, a rear cover, and a housing, with a water delivery cavity for mounting the circular arc gear set at the center of the housing; an inlet and an outlet port communicating with the water delivery cavity are provided on opposite sides of the outer surface of the housing, and a first conveying pipe is fixedly connected to the inlet and outlet ports; the front cover, rear cover, and housing are sequentially fixedly connected as a whole by bolts.

[0006] The pump body has a heating assembly on its outer surface for heating and heat preservation of the housing. The heating assembly includes a heat-conducting sleeve that is fixedly fitted and tightly attached to the outer surface of the housing. An insulation sleeve is also fitted on the outer surface of the heat-conducting sleeve. The two ends of the insulation sleeve are respectively sealed to the front cover and the rear cover, and an annular cavity for the flow of heating medium is formed between the insulation sleeve and the heat-conducting sleeve. Second delivery pipes for the input and output of heating medium are respectively provided on opposite sides of the outer surface of the insulation sleeve and are fixedly connected to the annular cavity. The insulation sleeve includes an inner layer, an insulation layer and a protective outer layer arranged sequentially from the inside to the outside. On the inner surface of the heat-conducting sleeve near the housing, heat-conducting fins protrude and extend into the housing. On the outer surface of the heat-conducting sleeve facing the annular cavity, heat-conducting fins protrude and extend into the annular cavity.

[0007] Furthermore, the heat-conducting sleeve is made of copper alloy or aluminum alloy with excellent thermal conductivity to ensure efficient heat transfer to the shell.

[0008] Furthermore, the inner layer is made of heat-resistant and corrosion-resistant metal material.

[0009] Furthermore, the insulation layer fills or wraps the outer surface of the inner layer and is made of high-temperature resistant polyurethane foam material, which significantly reduces heat loss to the environment.

[0010] Furthermore, the protective outer layer covers the outer surface of the insulation layer and is made of materials with certain strength, weather resistance and corrosion resistance; protecting the internal structure from mechanical damage and environmental erosion.

[0011] Furthermore, a sealing structure is provided at the junction of the first delivery pipe and the insulation sleeve to ensure the sealing of the interface when the first delivery pipe passes through the insulation sleeve and prevent leakage of the internal heat medium.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This invention achieves efficient, uniform, and low-loss heating and heat preservation capabilities, overcoming the thermal resistance limitations of traditional shell heat transfer and reducing heat loss. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a schematic diagram of the first cross-sectional structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the second cross-sectional structure of this utility model.

[0017] Figure 4 This is a cross-sectional view of the insulation sleeve of this utility model.

[0018] Figure 5 This is a partial cross-sectional view of the present invention.

[0019] The labels in the attached diagram are: 1-pump body, 2-circular arc gear set, 3-heating component, 11-front cover, 12-rear cover, 13-shell, 14-first delivery pipe, 31-heat conducting sleeve, 32-insulation sleeve, 321-second delivery pipe, 322-inner layer, 323-insulation layer, 324-protective outer layer. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings: Example

[0021] A gear pump for high-efficiency production of dimer acids, such as Figure 1-5 As shown, the pump includes a pump body 1, within which a set of intermeshing circular arc gears 2 for pumping media is rotatably mounted; the pump body 1 includes a front cover 11, a rear cover 12, and a housing 13, with a water delivery cavity for mounting the circular arc gear set 2 at its center; an inlet and an outlet port communicating with the water delivery cavity are provided on opposite sides of the outer surface of the housing 13, and a first conveying pipe 14 is fixedly connected to the inlet and outlet ports; the front cover 11, the rear cover 12, and the housing 13 are sequentially fixedly connected as a whole by bolts;

[0022] The outer surface of the housing 13 of the pump body 1 is provided with a heating component 3 for heating and heat preservation of the housing 13; the heating component 3 includes a heat-conducting sleeve 31 fixedly fitted and tightly attached to the outer surface of the housing 13; a heat preservation sleeve 32 is also fitted on the outer surface of the heat-conducting sleeve 31, and the two ends of the heat preservation sleeve 32 are respectively sealed to the front cover 11 and the rear cover 12, and an annular cavity for the flow of heating medium is formed between the heat preservation sleeve 32 and the heat-conducting sleeve 31; a second delivery pipe 321 for the input and output of heating medium is respectively provided on opposite sides of the outer surface of the heat preservation sleeve 32 and is fixedly connected to the annular cavity; the heat preservation sleeve 32 includes an inner layer 322, a heat preservation layer 323 and a protective outer layer 324 arranged sequentially from the inside to the outside; on the inner surface of the heat-conducting sleeve 31 near the housing 13, heat-conducting fins protrude and extend into the housing 13; on the outer surface of the heat-conducting sleeve 31 facing the annular cavity, heat-conducting fins protrude and extend into the annular cavity.

[0023] Working principle:

[0024] This gear pump, through the rotation of internal meshing gears, draws in the medium from the inlet and continuously pumps it out through the outlet due to changes in the pump cavity volume. Simultaneously, a heating medium—hot water, heat transfer oil, or steam—provided by an external heat source enters the annular cavity surrounding the pump body 1 via the second delivery pipe 321 and circulates within it. The heat-conducting sleeve 31, as the core heat exchange component, has fins extending from its outer wall immersed in the heating medium within the annular cavity, significantly increasing the contact area for efficient heat absorption; its inner wall fins are directly inserted into the pump casing, deeply transferring heat to the core flow area of ​​the medium, significantly improving heat transfer efficiency and overcoming the thermal resistance limitations of traditional casing 13. The heat absorbed by the heat-conducting sleeve 31 is continuously conducted to the pump body 1 and the medium through the body and fins. The insulation sleeve 32 tightly wraps around the heat-conducting sleeve 31 and the annular cavity; through a composite structure of a sealing layer, an insulation layer 323, and a protective layer, heat loss is minimized, ensuring system sealing. After cooling, the heating medium returns to the external heat source for reheating via the second outlet pipe 321, forming a closed-loop cycle. The three elements work together—the circulating heating medium continuously supplies heat, the heat-conducting jacket 31 efficiently conducts heat, and the insulation jacket 32 ​​isolates heat loss—to ensure that the pump body 1 always maintains a stable high-temperature operating environment, ensuring that easily condensable or high-viscosity media are at the required temperature. The temperature of the pump body 1 can be precisely controlled by adjusting the heat source temperature or the medium flow rate.

[0025] Although this disclosure has been described in detail with reference to exemplary embodiments, it is not limited thereto, and it will be apparent to those skilled in the art that various modifications and changes may be made thereto without departing from the scope of this disclosure.

Claims

1. A gear pump for high-efficiency production of dimer acid, comprising a pump body (1), wherein a circular arc gear set (2) for pumping medium is rotatably installed inside the pump body (1); the pump body (1) comprises a front cover (11), a rear cover (12) and a housing (13), wherein a water conveying cavity for installing the circular arc gear set (2) is provided at the center of the housing (13); an inlet hole and an outlet hole communicating with the water conveying cavity are provided on opposite sides of the outer surface of the housing (13), and a first conveying pipe (14) is fixedly connected to the inlet hole and the outlet hole; the front cover (11), the rear cover (12) and the housing (13) are sequentially fixedly connected to form a whole by bolts; characterized in that The outer surface of the housing (13) of the pump body (1) is provided with a heating component (3) for heating and heat preservation of the housing (13); the heating component (3) includes a heat-conducting sleeve (31) that is fixedly sleeved and tightly fitted to the outer surface of the housing (13); a heat-insulating sleeve (32) is also sleeved on the outer surface of the heat-conducting sleeve (31), and the two ends of the heat-insulating sleeve (32) are respectively sealed to the front cover (11) and the rear cover (12), and a gap is formed between the heat-insulating sleeve (32) and the heat-conducting sleeve (31). An annular cavity for circulating heating medium; the outer surface of the insulation sleeve (32) is provided with a second conveying pipe (321) fixedly connected to the annular cavity for the input and output of heating medium on both sides; the insulation sleeve (32) includes an inner layer (322), an insulation layer (323) and a protective outer layer (324) arranged sequentially from the inside to the outside; the inner surface of the heat-conducting sleeve (31) near the shell (13) is provided with heat-conducting fins that extend into the shell (13); On the outer surface of the heat-conducting sleeve (31) facing the annular cavity, heat-conducting fins extending into the annular cavity are provided.

2. The gear pump for efficient production of dimer acid according to claim 1, characterized by, The heat-conducting sleeve (31) is made of copper alloy or aluminum alloy with excellent thermal conductivity.

3. The gear pump for efficient production of dimer acid according to claim 1, characterized by, The inner layer (322) is made of heat-resistant and corrosion-resistant metal material.

4. The gear pump for efficient production of dimer acid according to claim 1, characterized by, The insulation layer (323) is filled or wrapped around the outer surface of the inner layer (322) and is made of high-temperature resistant polyurethane foam material.

5. The gear pump for high-efficiency production of dimer acid according to claim 1, characterized in that, The protective outer layer (324) is covered on the outer surface of the insulation layer (323) and is made of a material with certain strength, weather resistance and corrosion resistance.

6. The gear pump for efficient production of dimer acid according to claim 1, characterized by, A sealing structure is provided at the junction of the first delivery pipe (14) and the insulation sleeve (32).

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