Constant-temperature leakage-free gear pump device

Abstract

The utility model discloses a constant temperature leak-free gear pump device which comprises a gear pump device body, the gear pump device body comprises a pump device part and a fluid medium constant temperature part, the pump device part comprises a power mechanism, a non-contact type driving mechanism and a gear pump body, the non-contact type driving mechanism is arranged on the right side of the gear pump body, and the fluid medium constant temperature part is arranged on the non-contact type driving mechanism. The power mechanism is arranged on the right side of the non-contact driving mechanism, and the fluid medium constant-temperature part is arranged on the left side of the gear pump body and communicates with the gear pump body. By starting the power mechanism, the power mechanism drives the non-contact driving mechanism to rotate, the non-contact driving mechanism drives the gear pump body to rotate so as to convey a fluid medium, and the fluid medium constant-temperature part heats liquid to a constant-temperature medium and conveys the constant-temperature medium into the gear pump body. The temperature of the gear pump body is kept constant through the constant-temperature medium, the precision of the conveying flow of the gear pump body can be improved, leakage of the conveying medium is prevented, and stable operation of the gear pump body is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid transmission equipment, and more specifically, to a constant temperature and leakage-free gear pump device. Background Art

[0002] Gear pumps, as key devices in the field of fluid transmission, rely on the power source to drive the gears to mesh in the cylinder body, thereby achieving effective fluid delivery through changes in the volume of the sealed working chamber. Gear pumps have the advantages of high volumetric efficiency, wide applicability, stable operation, easy maintenance and strong self-priming ability. However, traditional gear pumps mainly use traditional methods such as sealing rings, packing seals, and mechanical seals in terms of sealing technology. These methods are often easily damaged when facing media containing toxic gases or highly corrosive media, resulting in reduced sealing performance, which may cause problems such as media leakage. In addition, when traditional gear pumps are conveying media, changes in the temperature of the medium will directly affect its viscosity. Changes in the viscosity of the medium will affect the delivery efficiency of the pump body, and may also cause seal failure and media leakage.

[0003] As a special connection form, the non-contact drive mechanism converts the dynamic seal between the shaft and the body into a static seal between the isolation sleeve and the body. It effectively transmits the motion form and power of the active part to the driven part without mechanical contact through magnetic coupling, thereby ensuring the sealing during the conveying process and reducing the risk of medium leakage.

[0004] Therefore, it is necessary to propose a constant temperature leakage-free gear pump device to at least partially solve the problems existing in the prior art. Utility Model Content

[0005] A series of simplified concepts are introduced in the utility model content section, which will be further described in detail in the detailed implementation section. The utility model content section of the utility model does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0006] In order to at least partially solve the above-mentioned problems, the utility model provides a constant temperature and leakage-free gear pump device, comprising: a gear pump device, the gear pump device including a pump device part and a fluid medium constant temperature part, the pump device part including a power mechanism, a non-contact driving mechanism, and a gear pump body, the non-contact driving mechanism is arranged on the right side of the gear pump body, the power mechanism is arranged on the right side of the non-contact driving mechanism, the fluid medium constant temperature part is arranged on the left side of the gear pump body, and the fluid medium constant temperature part is connected to the gear pump body.

[0007] According to the constant temperature leakage-free gear pump device of the embodiment of the utility model, the fluid medium constant temperature part includes a storage container and a circulation pump. A heating module and a temperature sensor are arranged in the storage container. The storage container, the circulation pump and the gear pump body are connected.

[0008] According to the constant temperature leakage-free gear pump device of the embodiment of the utility model, a constant temperature medium channel group is arranged in the front pump head of the gear pump body, and the constant temperature medium channel group includes a constant temperature medium inlet channel, a constant temperature medium outlet channel, and a constant temperature medium intermediate channel. The constant temperature medium inlet channel and the constant temperature medium outlet channel are both arranged at the bottom of the front pump head and extend inwardly. The constant temperature medium intermediate channel is arranged on one side of the front pump head and is connected with the internal constant temperature medium inlet channel and constant temperature medium outlet channel. The constant temperature medium inlet channel is connected with a circulation pump, and the constant temperature medium outlet channel is connected with a storage container.

[0009] According to the constant temperature and leakage-free gear pump device of the embodiment of the utility model, the gear pump body includes a front pump head, a pump head cover, and a pump seat. The pump seat is arranged on the left side of the non-contact driving mechanism, the front pump head is arranged on the left side of the pump seat, and the pump head cover is arranged on the left side of the front pump head through a gear plate. A gear groove is arranged in the front pump head, and a gear transmission member is arranged in the gear groove. The gear transmission member is rotatably connected to the non-contact driving mechanism.

[0010] According to the constant temperature and leakage-free gear pump device of the embodiment of the utility model, the gear transmission member includes a driving shaft and a driven shaft, the driving shaft and the driven shaft are arranged in the gear groove, the driving shaft is connected to the non-contact driving mechanism, and the driving shaft and the driven shaft are respectively provided with a driving gear and a driven gear, the driving gear and the driven gear are meshed and connected and are located in the middle groove of the gear plate.

[0011] According to the constant temperature leakage-free gear pump device of the embodiment of the utility model, a delivery inlet hole is arranged on the top of the pump seat, a first inner medium cavity connected to the delivery inlet hole is arranged in the pump seat, a second inner medium cavity connected to the first inner medium cavity, and a delivery medium inlet channel and a delivery medium outlet channel are arranged in the front pump head, the delivery medium inlet channel is arranged between the second inner medium cavity and the gear groove, a delivery outlet hole is opened on the side wall of the front pump head, the delivery medium outlet channel is arranged between the gear groove and the delivery outlet hole, and the driving shaft passes through the first inner medium cavity and the second inner medium cavity and extends to be connected to the non-contact driving mechanism.

[0012] According to the constant temperature and leakage-free gear pump device of the embodiment of the utility model, the non-contact driving mechanism includes an active driving body, a sealing cover, and a driven driving body. The driven driving body is arranged on the right side of the pump seat and connected to the gear pump body. The sealing cover is arranged on the right side of the pump seat and covers the driven driving body. The pump seat has a sealing ring between the sealing covers. The active driving body cover is arranged on the right side of the sealing cover, and the active driving body is connected to the power mechanism.

[0013] According to the constant temperature leakage-free gear pump device of the embodiment of the utility model, the power mechanism includes a power source and an input shaft, wherein the input shaft is arranged on the left side of the power source and is connected to the active driving body.

[0014] According to the constant temperature leakage-free gear pump device of the embodiment of the utility model, it also includes: a protective cover, which is arranged between the power source and the pump seat, and the cover is arranged outside the non-contact drive mechanism, and the bottom of the protective cover is provided with a supporting foot plate.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] The utility model provides a constant temperature and leak-free gear pump device, which comprises: a gear pump device, which comprises a pump device part and a fluid medium constant temperature part, and the pump device part comprises a power mechanism, a non-contact driving mechanism, and a gear pump body, wherein the non-contact driving mechanism is installed on the right side of the gear pump body, and the power mechanism is installed on the right side of the non-contact driving mechanism, and the fluid medium constant temperature part is installed on the left side of the gear pump body, and the fluid medium constant temperature part is connected to the gear pump body. Therefore, when the gear pump device is used, the power mechanism is started, and the non-contact driving mechanism is driven to rotate by the power mechanism, and then the non-contact driving mechanism drives the gear pump body to rotate to transport the fluid medium, and the fluid medium constant temperature part heats the liquid to the constant temperature medium and then transports it to the gear pump body, and the constant temperature medium is used to maintain the constant temperature of the gear pump body, which can not only improve the accuracy of the gear pump body's conveying flow rate, but also further prevent the leakage of the transport medium, and ensure the stable operation of the gear pump body.

[0017] The constant temperature leak-free gear pump device described in the utility model, other advantages, objectives and features of the utility model will be reflected in part through the following description, and in part will be understood by technicians in this field through research and practice of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 The structure of the gear pump body in this utility model is shown in FIG. Figure 1 .

[0021] Figure 3 The structure of the gear pump body in this utility model is shown in FIG. Figure 2 .

[0022] Figure 4 It is a schematic diagram of part of the internal structure of the gear pump body in the utility model.

[0023] Figure 5 This is a schematic diagram of the partial structure of the front pump head in the utility model Figure 1 .

[0024] Figure 6 This is a schematic diagram of the partial structure of the front pump head in the utility model Figure 2 .

[0025] Figure 7 It is a schematic diagram of the circulation flow of the constant temperature medium in the utility model.

[0026] in, Figure 1 , Figure 7 The arrows in the figure indicate the circulation flow direction of the constant temperature medium. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0028] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0029] like Figure 1-Figure 7As shown, the utility model provides a constant temperature and leakage-free gear pump device, including: a gear pump device, the gear pump device includes a pump device part 100 and a fluid medium constant temperature part 40, specifically, the pump device part 100 includes a power mechanism 10, a non-contact driving mechanism 20, and a gear pump body 30, wherein the non-contact driving mechanism 20 is installed on the right side of the gear pump body 30, and the power mechanism 10 is installed on the right side of the non-contact driving mechanism 20, and the fluid medium constant temperature part 40 is installed on the left side of the gear pump body 30, and the fluid medium constant temperature part 40 is connected to the gear pump body 30. Therefore, when the gear pump device is used, the power mechanism 10 is started, and the non-contact driving mechanism 20 is driven to rotate by the power mechanism 10, and then the non-contact driving mechanism 20 drives the gear pump body 30 to rotate to transport the fluid medium, and the fluid medium constant temperature part 40 heats the liquid to the constant temperature medium 400 and then transports it to the gear pump body 30. The constant temperature medium 400 is used to maintain the constant temperature of the gear pump body 30, which can not only improve the accuracy of the gear pump body delivery flow rate, but also further prevent the leakage of the transport medium, thereby ensuring the stable operation of the gear pump; it can be widely used in the petroleum, chemical, food and other industries to meet the transportation needs of various common media and toxic, harmful and highly corrosive media.

[0030] Exemplary Fluid Medium Thermostatic Section

[0031] Furthermore, some embodiments of the utility model provide a specific structure of the above-mentioned fluid medium constant temperature part 40, and the fluid medium constant temperature part 40 of this structure includes a storage container 41 and a circulation pump 42, wherein a heating module 43 and a temperature sensor (not shown) are installed in the storage container 41, and the medium in the storage container 41 is heated by starting the heating module 43, and the temperature sensor detects the temperature of the medium. When the set temperature is reached, the circulation pump 42 is started to transport the medium in the storage container 41 to the gear pump body 30 through the first delivery pipe 411 and the second delivery pipe 412, and then the gear pump body 30 transports the medium back to the storage container 41 through the third delivery pipe 413 to form a constant temperature medium circulation, so that the interior of the front pump head 31 in the gear pump body 30 is continuously heated and insulated, so that the gear pump body 30 can maintain the constant temperature of the gear pump body 30, which can improve the accuracy of the gear pump body 30 delivery flow rate, prevent the leakage of the transport medium, and ensure the stable operation of the gear pump body 30.

[0032] Furthermore, in some embodiments of the present invention, a constant temperature medium channel group 301 is provided in the front pump head 31 of the gear pump body 30. Specifically, the constant temperature medium channel group 301 includes a constant temperature medium inlet channel 302, a constant temperature medium outlet channel 303, and a constant temperature medium intermediate channel 304. Specifically, the above-mentioned constant temperature medium inlet channel 302 and constant temperature medium outlet channel 303 are both provided at the bottom of the front pump head 31 and extend upward toward the interior of the front pump head 31, while the constant temperature medium intermediate channel 304 is provided on one side of the front pump head 31 and extends transversely toward the interior of the front pump head 31, so that the interior of the constant temperature medium intermediate channel 304 is connected to the constant temperature medium inlet channel 302 and the constant temperature medium outlet channel 303. The medium outlet channel 303 is internally connected to form an inverted U-shaped constant temperature medium channel group 301, and then the circulation pump 42 communicates with the medium to the constant temperature medium inlet channel 302 through the second delivery pipe 412, and communicates with the circulation pump 42, while the constant temperature medium outlet channel 303 communicates with the medium to flow back to the storage container 41 through the above-mentioned third delivery pipe 413. Through the design of the above-mentioned structure, the constant temperature medium channel group 301 can be heated at a constant temperature by the front pump head 31 in the gear pump body 30 to maintain the constant temperature of the gear pump body 30, which can improve the accuracy of the delivery flow of the gear pump body 30, prevent leakage of the transported medium, and ensure the stable operation of the gear pump body 30.

[0033] Exemplary gear pump body

[0034] Further, some embodiments of the utility model provide a specific structure of the gear pump body 30, wherein the gear pump body 30 of the structure includes a front pump head 31, a pump head cover 33, and a pump seat 38. Specifically, the pump seat 38 is installed on the left side of the non-contact drive mechanism 20, and the front pump head 31 is installed on the left side of the pump seat 38. The pump head cover 33 is installed on the left side of the front pump head 31 through a gear plate 32. A gear groove 310 is provided in the front pump head 31, and a gear transmission member is installed in the gear groove 310. Further, the gear transmission member is rotationally connected to the non-contact drive mechanism 20. Therefore, the non-contact drive mechanism 20 can drive the gear transmission member to rotate to realize the conveying medium.

[0035] Furthermore, some embodiments of the present invention provide a specific structure of the above-mentioned gear transmission member, and the gear transmission member of this structure includes a driving shaft 36 and a driven shaft 37, and the driving shaft 36 and the driven shaft 37 are installed in the gear groove 310, and then the above-mentioned driving shaft 36 passes through the front pump head 31 and the pump seat 38 and extends to connect with the non-contact drive mechanism 20, so the non-contact drive mechanism 20 can drive the driving shaft 36 to rotate, and the driving shaft 36 has a driving gear 34, and a driven gear 35 is provided on the driven shaft 37, the driving gear 34 and the driven gear 35 are meshed and connected, and are located in the middle groove 321 of the gear plate 32.

[0036] Therefore, when the driving gear 34 rotates synchronously and starts to mesh and rotate with the driven gear 35, when the gears start to rotate, a sealed working chamber will be formed between the driving gear 34 and the driven gear 35. As the two rotate, when the two driving gears 34 and the driven gear 35 gradually separate, the volume of the working chamber will increase, thereby forming a low-pressure area in the working chamber. Under the action of this low-pressure area, the transported medium (such as oil, polymer melt, etc.) enters the working chamber and then flows out through the working chamber, thereby realizing the medium conveying function of the gear pump body 30.

[0037] Furthermore, in some embodiments of the utility model, a delivery inlet hole 381 is provided on the top of the pump seat 38, a first inner medium cavity 382 communicating with the delivery inlet hole 381 is also provided in the pump seat 38, and a second inner medium cavity 311 snap-fittingly connected with the first inner medium cavity 382 is provided in the front pump head 31, so that the first inner medium cavity 382 and the second inner medium cavity 311 can form a storage medium cavity, so that the transported medium enters the storage medium cavity through the delivery inlet hole 381; a delivery medium inlet channel 312 and a delivery medium outlet channel 313 are also provided in the front pump head 31, and the delivery medium inlet channel 312 is connected between the second inner medium cavity 311 and the gear groove 310, and the side wall of the front pump head 31 A delivery hole 314 is provided on the upper surface, and the delivery medium outlet channel 313 is connected between the gear groove 310 and the delivery hole 314. The above-mentioned driving shaft 36 passes through the first inner medium cavity 382 and the second inner medium cavity 311 and extends to connect with the non-contact driving mechanism 20. Therefore, through the rotation of the driving shaft 36, the delivered medium is sucked into the pump cavity from the storage medium cavity, and then with the continuous rotation of the driving gear 34 and the driven gear 35, the two driving gears 34 and the driven gear 35 begin to mesh, and the volume of the working cavity gradually decreases, resulting in an increase in the pressure in the working cavity. Under the action of this high pressure, the delivered medium is pushed out of the working cavity and delivered outward through the delivery medium outlet channel 313 and the delivery hole 314. Through the design of the above structure, the medium delivery function of the gear pump body 30 is better realized.

[0038] Exemplary non-contact drive mechanism

[0039] Furthermore, some embodiments of the utility model provide a specific structure of the above-mentioned non-contact drive mechanism 20, wherein the non-contact drive mechanism 20 of this structure includes an active drive body 21, a sealing cover 22, and a driven drive body 23, wherein the driven drive body 23 is installed on the right side of the pump seat 38 and is connected to the gear pump body 30, the sealing cover 22 is installed on the right side of the pump seat 38 and covers the driven drive body 23, the pump seat 38 has a sealing ring 26 between the sealing covers 22, and the active drive body 21 is covered on the right side of the sealing cover 22, and then the active drive body 21 is connected to the power mechanism 10; further, the above-mentioned power mechanism 10 includes a power source 11 and an input shaft 12, the input shaft 12 is installed on the left side of the power source 11, and the input shaft 12 is specifically connected to the active drive body 21.

[0040] Therefore, the active driving body 21 rotates together with the input shaft 12, and the sealing cover 22 isolates the active driving body 21 and the driven driving body 23. The active driving body 21 drives the driven driving body 23 to rotate through magnetic coupling, thereby realizing the movement between the non-contact driving mechanism 20 and the power mechanism 10 without leakage and with high precision.

[0041] Furthermore, a protective cover 39 is installed between the power source 11 and the pump seat 38, and the protective cover 39 is arranged on the outside of the non-contact driving mechanism 20. A supporting foot plate 391 is installed at the bottom of the protective cover 39. The protective cover 39 can be supported by two supporting foot plates 391, and the protective cover 39 fixes the above-mentioned power source 11 and pump seat 38, thereby realizing the overall connection between the above-mentioned power mechanism 10 and the non-contact driving mechanism 20.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; 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.

[0044] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A constant temperature, leak-free gear pump device, characterized in that: include: A gear pump device, comprising a pump device part (100) and a fluid medium constant temperature part (40), wherein the pump device part (100) comprises a power mechanism (10), a non-contact drive mechanism (20), and a gear pump body (30), wherein the non-contact drive mechanism (20) is arranged on the right side of the gear pump body (30), the power mechanism (10) is arranged on the right side of the non-contact drive mechanism (20), the fluid medium constant temperature part (40) is arranged on the left side of the gear pump body (30), and the fluid medium constant temperature part (40) and the gear pump body (30) are connected.

2. A constant temperature, leak-free gear pump device according to claim 1, characterized in that: The fluid medium constant temperature unit (40) comprises a storage container (41) and a circulation pump (42); a heating module (43) and a temperature sensor are arranged in the storage container (41); and the storage container (41), the circulation pump (42) and the gear pump body (30) are connected to each other.

3. A constant temperature, leak-free gear pump device according to claim 2, characterized in that: A constant temperature medium channel group (301) is arranged in the front pump head (31) of the gear pump body (30), and the constant temperature medium channel group (301) includes a constant temperature medium inlet channel (302), a constant temperature medium outlet channel (303), and a constant temperature medium intermediate channel (304). The constant temperature medium inlet channel (302) and the constant temperature medium outlet channel (303) are both arranged at the bottom of the front pump head (31) and extend inwardly. The constant temperature medium intermediate channel (304) is arranged on one side of the front pump head (31) and communicates with the constant temperature medium inlet channel (302) and the constant temperature medium outlet channel (303) inside. The constant temperature medium inlet channel (302) is communicated with a circulation pump (42), and the constant temperature medium outlet channel (303) is communicated with a storage container (41).

4. A constant temperature, leak-free gear pump device according to claim 1, characterized in that: The gear pump body (30) comprises a front pump head (31), a pump head cover (33), and a pump seat (38); the pump seat (38) is arranged on the left side of the non-contact drive mechanism (20); the front pump head (31) is arranged on the left side of the pump seat (38); the pump head cover (33) is arranged on the left side of the front pump head (31) through a gear plate (32); a gear groove (310) is arranged in the front pump head (31); a gear transmission member is arranged in the gear groove (310); and the gear transmission member is rotationally connected to the non-contact drive mechanism (20).

5. A constant temperature, leak-free gear pump device according to claim 4, characterized in that: The gear transmission member comprises a driving shaft (36) and a driven shaft (37). The driving shaft (36) and the driven shaft (37) are arranged in a gear groove (310). The driving shaft (36) is connected to a non-contact driving mechanism (20). A driving gear (34) and a driven gear (35) are respectively arranged on the driving shaft (36) and the driven shaft (37). The driving gear (34) and the driven gear (35) are meshed and connected and are located in a middle groove (321) of a gear plate (32).

6. A constant temperature, leak-free gear pump device according to claim 5, characterized in that: The pump seat (38) is provided with a delivery inlet hole (381) on the top, and a first inner medium cavity (382) communicating with the delivery inlet hole (381) is provided in the pump seat (38). The front pump head (31) is provided with a second inner medium cavity (311) snap-fitted with the first inner medium cavity (382), as well as a delivery medium inlet channel (312) and a delivery medium outlet channel (313). The delivery medium inlet channel (312) is arranged between the second inner medium cavity (311) and the gear groove (310). A delivery outlet hole (314) is provided on the side wall of the front pump head (31), and the delivery medium outlet channel (313) is arranged between the gear groove (310) and the delivery outlet hole (314). The driving shaft (36) passes through the first inner medium cavity (382) and the second inner medium cavity (311) and extends to connect with the non-contact drive mechanism (20).

7. A constant temperature, leak-free gear pump device according to claim 1, characterized in that: The non-contact drive mechanism (20) comprises an active drive body (21), a sealing cover (22), and a driven drive body (23); the driven drive body (23) is arranged on the right side of a pump seat (38) and is connected to the gear pump body (30); the sealing cover (22) is arranged on the right side of the pump seat (38) and covers the driven drive body (23); the pump seat (38) has a sealing ring (26) between the sealing cover (22); the active drive body (21) is covered on the right side of the sealing cover (22); and the active drive body (21) is connected to a power mechanism (10).

8. A constant temperature, leak-free gear pump device according to claim 7, characterized in that: The power mechanism (10) comprises a power source (11) and an input shaft (12). The input shaft (12) is arranged on the left side of the power source (11) and is connected to an active driving body (21).

9. A constant temperature, leak-free gear pump device according to claim 8, characterized in that: Also includes: A protective cover (39) is arranged between the power source (11) and the pump seat (38), and the cover is arranged outside the non-contact drive mechanism (20). A supporting foot plate (391) is arranged at the bottom of the protective cover (39).

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