Cooling jacket for metering pump and metering pump

Abstract

The utility model relates to the technical field of metering pumps, and particularly provides a cooling jacket for a metering pump and the metering pump. In order to solve the problem that a pump head of an existing metering pump is poor in cooling effect, the cooling jacket comprises a cooling portion and a jacket portion, an opening is formed in one side of the jacket portion so that the jacket portion can be arranged on the pump head of the metering pump in a sleeved mode, the cooling portion abuts against the jacket portion for heat exchange, a cooling liquid cavity is formed in the cooling portion, and the cooling liquid cavity is communicated with the jacket portion. And the cooling jacket is provided with a cooling liquid inlet and a cooling liquid outlet which are communicated with the cooling liquid cavity. Cooling liquid enters from the cooling liquid inlet, passes through the cooling liquid cavity and then is discharged from the cooling liquid outlet, the cooling liquid does not make direct contact with the pump head, the cooling liquid makes contact with the pump head through the clamping sleeve part, and then the cooling liquid in the cooling liquid cavity cools the clamping sleeve part. The clamping sleeve part and the whole pump head are more attached, the cooling area is larger, the heat dissipation effect is better, and the accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metering pumps, and specifically provides a cooling jacket for a metering pump and a metering pump. Background Art

[0002] Metering pumps have the advantages of accurate and adjustable delivery volume, and are ideal equipment for precise metering and dosing of fluids. They are widely used in various fields including the pharmaceutical, food and petrochemical industries, and are responsible for metering and adding highly corrosive, toxic, highly viscous and high-pressure media in the process.

[0003] When a traditional metering pump is transporting a high-temperature medium, the heat of the medium will be transferred to the transmission components inside the metering pump through heat conduction, causing the internal oil temperature to rise, even exceeding the normal operating temperature of the mechanical transmission components, aggravating the wear of each component and greatly reducing the service life of each component. Therefore, the pump head of the metering pump needs to be cooled to prevent the metering pump from failing. In the prior art, in order to completely cool the pump head of the metering pump, a cooling liquid tank is opened on the outside of the pump head, and then the pump head is completely wrapped. The cooling liquid passes through the cooling liquid tank on the pump head from the inlet and then enters the reaction system through the outlet. Since the pump head is irregular, it is difficult to completely wrap it, which in turn affects the cooling effect of the metering pump and affects the accuracy of the metering pump.

[0004] Accordingly, the art needs a new cooling jacket for a metering pump to solve the problem of poor cooling effect of the pump head of the existing metering pump. Utility Model Content

[0005] The utility model aims to solve the above technical problem, that is, to solve the problem that the cooling effect of the pump head of the existing metering pump is poor.

[0006] The utility model provides a cooling jacket for a metering pump, wherein the cooling jacket comprises a cooling portion and a jacket portion, one side of the jacket portion is provided with an opening so that the jacket portion is sleeved on the pump head of the metering pump, the cooling portion abuts against the jacket portion for heat exchange, a cooling liquid cavity is provided on the cooling portion, and a cooling liquid inlet and a cooling liquid outlet communicated with the cooling liquid cavity are provided on the cooling jacket.

[0007] In the preferred technical solution of the cooling jacket for the metering pump, a partition is provided between the opening of the jacket portion and the coolant cavity, a first hollow interlayer is provided inside the partition, and the first hollow interlayer is connected to the coolant inlet and the coolant outlet.

[0008] In the preferred technical solution of the cooling jacket for the metering pump, a second hollow interlayer is provided inside the wall where the coolant inlet and the wall where the coolant outlet are located, and the second hollow interlayer is communicated with the coolant cavity.

[0009] In the preferred technical solution of the cooling jacket for the metering pump, an inner coolant pipe is provided in the coolant cavity, the inner coolant pipe is respectively connected to the coolant inlet and the coolant outlet, and the inner coolant pipe winds in the coolant cavity to form a maze structure.

[0010] In the preferred technical solution of the cooling jacket for the metering pump, a cover plate capable of opening and closing the cooling liquid cavity is provided on the cooling liquid cavity.

[0011] In the preferred technical solution of the cooling jacket for the metering pump, a sealing groove is provided on the outer edge of the cooling portion, a sealing gasket is provided in the sealing groove, and the sealing gasket is provided between the cover plate and the cooling liquid cavity.

[0012] In the preferred technical solution of the cooling jacket for the metering pump, threaded holes are further provided on the outer edge of the cooling portion, and bolts are fastened to the threaded holes after passing through the cover plate.

[0013] In the preferred technical solution of the cooling jacket for the metering pump, a avoidance hole is provided at the top of the jacket portion; and / or a avoidance hole is provided at the bottom of the jacket portion.

[0014] In the preferred technical solution of the cooling jacket for the metering pump, a coolant inlet pipe is provided on the coolant inlet, and the coolant inlet pipe is threadedly connected to the coolant inlet; and / or a coolant outlet pipe is provided on the coolant outlet, and the coolant outlet pipe is threadedly connected to the coolant outlet.

[0015] The utility model also provides a metering pump, which includes the cooling jacket for the metering pump described in any one of the above technical solutions.

[0016] Those skilled in the art can understand that the cooling jacket for a metering pump of the present invention includes a cooling portion and a jacket portion, one side of the jacket portion is open so that the jacket portion is sleeved on the pump head of the metering pump, the cooling portion and the jacket portion abut against each other for heat exchange, a cooling liquid cavity is provided on the cooling portion, and a cooling liquid inlet and a cooling liquid outlet connected to the cooling liquid cavity are provided on the cooling jacket.

[0017] When the above technical solution is adopted, the cooling jacket of the utility model is installed on the pump head of the metering pump. The coolant enters the coolant cavity from the coolant inlet, cools the jacket part through the coolant cavity, and is discharged from the coolant outlet. The coolant does not directly contact the pump head, but contacts the pump head through the jacket part. Then the jacket part exchanges heat with the coolant in the coolant cavity, and the coolant cools the jacket part. Compared with opening a coolant tank on the pump head and then wrapping the pump head in all directions, the jacket part does not need to consider the sealing problem, so that the jacket part and the pump head can be more closely fitted as a whole, the cooling area is larger, and the heat dissipation effect is better, thereby improving the accuracy of the metering pump. In addition, the production and manufacturing of the cooling jacket is simple, so that different cooling jackets can be matched according to different models of pump heads, and the overall cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0019] Figure 1 It is a three-dimensional schematic diagram of the cooling jacket of the utility model;

[0020] Figure 2 This is a front view schematic diagram of the cooling jacket of the present invention;

[0021] Figure 3 It is a side view schematic diagram of the cooling jacket of the present invention;

[0022] Figure 4 It is a schematic top view of the cooling jacket of the present invention;

[0023] Figure 5 This is a schematic diagram of the cover of the cooling jacket of the utility model;

[0024] Figure 6 yes Figure 1 Cross-sectional view at AA in the middle.

[0025] List of reference numerals:

[0026] 1. Jacket; 11. Partition; 111. First hollow interlayer; 12. Avoidance hole; 2. Cooling part; 21. Cooling liquid cavity; 22. Outer edge of cooling part; 23. Sealing groove; 24. Threaded hole; 25. Cooling liquid inlet; 26. Cooling liquid outlet; 3. Cover plate. DETAILED DESCRIPTION

[0027] Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are intended solely to illustrate the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art may adjust these embodiments as needed to suit specific applications. For example, although this application is described in conjunction with a metering pump, this is not intended to be limiting, and the cooling jacket of the present invention may also be applied to other equipment requiring cooling.

[0028] It should be noted that in the description of this utility model, terms such as "top," "bottom," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These terms are used solely for ease of description and are not intended to indicate or imply that the device or component described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] Furthermore, it should be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "installation" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; they can refer to mechanical connection; they can refer to direct connection, indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0030] like Figure 1 、 Figure 5 and Figure 6 As shown, in order to solve the problem of poor cooling effect of the pump head of the existing metering pump, the cooling jacket for the metering pump of the present invention includes a cooling part 2 and a jacket part 1. One side of the jacket part 1 is open so that the jacket part 1 is mounted on the pump head of the metering pump. The cooling part 2 and the jacket part 1 are in contact with each other for heat exchange. The cooling part 2 is provided with a cooling liquid cavity 21, and the cooling jacket is provided with a cooling liquid inlet 25 and a cooling liquid outlet 26 that are connected to the cooling liquid cavity 21. Although Figure 1 The cooling liquid cavity 21 shown in the figure is an open cavity with one side open. A cover plate 3 can be set on the cooling liquid cavity 21 for sealing, or the cooling liquid cavity 21 can also be set as a closed cavity. Those skilled in the art can set the form of the cooling liquid cavity 21 according to their needs.

[0031] The advantage of the above-mentioned setting method is that the cooling jacket of the utility model is arranged on the pump head of the metering pump, and the coolant enters from the coolant inlet 25, cools the jacket part 1 through the coolant cavity 21, and is discharged from the coolant outlet 26. The coolant does not directly contact the pump head, but contacts the pump head through the jacket part 1, and then the jacket part 1 exchanges heat with the coolant in the coolant cavity, and the coolant cools the jacket part 1. Compared with opening a coolant tank on the pump head and then wrapping the pump head in all directions, the jacket part 1 of the utility model does not need to consider the sealing problem, so that the jacket part 1 can be more closely fitted with the pump head as a whole, the cooling area is larger, and the heat dissipation effect is better, thereby improving the accuracy of the metering pump. In addition, the production and manufacturing of the cooling jacket is simple, so that different cooling jackets can be matched according to different models of pump heads, and the overall cost is lower.

[0032] Reference Figure 1 and Figure 6 In one possible embodiment, the jacket portion 1 is provided on one side and the cooling portion 2 is provided on the other side. A partition 11 is provided between the jacket portion 1 and the cooling portion 2 to separate the jacket portion 1 and the cooling portion 2. In other words, the jacket portion 1 and the cooling portion 2 share a partition 11. A cooling liquid cavity 21 is provided on one side of the cooling portion 2. The partition 11 is located between the opening of the jacket portion 1 and the cooling liquid cavity 21 of the cooling portion 2, thereby forming the jacket portion 1 and the cooling portion 2 into a whole. The jacket portion 1 with an opening is provided on one side of the cooling portion 2 so that the jacket portion 1 is sleeved on the pump head of the metering pump. Figure 5 The cooling portion 2 is provided with a cover plate 3 that can open and close the cooling liquid cavity 21. The cooling liquid inlet 25 and the cooling liquid outlet 26 are respectively provided on different walls of the cooling portion 2 and are connected to the cooling liquid cavity 21. A first hollow interlayer 111 is provided inside the partition 11. The first hollow interlayer 111 is respectively connected to the cooling liquid inlet 25 and the cooling liquid outlet 26 through pipelines. The cooling liquid enters the first hollow interlayer 111 from the cooling liquid inlet 25. Because the partition 11 is located between the jacket portion 1 and the cooling portion 2, the cooling liquid in the first hollow interlayer 111 can quickly cool the jacket portion 1 when the temperature of the jacket portion 1 is very high. Of course, the cooling liquid inlet 25 and the cooling liquid outlet 26 can also be provided on the same wall of the cooling portion 2, or the cooling liquid inlet 25 and the cooling liquid outlet 26 can also be provided on the wall of the jacket portion 1. Those skilled in the art can set the positions of the cooling liquid inlet 25 and the cooling liquid outlet 26 as needed, and all fall within the scope of protection of the present utility model.

[0033] Continue to refer to Figure 1Furthermore, the cooling jacket is in the shape of a rectangular parallelepiped as a whole, and the cooling portion 2 and the jacket portion 1 are also rectangular. The coolant inlet 25 is arranged on the side wall of the cooling portion 2, and the coolant outlet 26 is arranged on the top wall of the cooling portion 2. The coolant inlet 25 is provided with a coolant inlet pipe connected to the coolant inlet 25, and the coolant outlet 26 is provided with a coolant outlet pipe connected to the coolant outlet 26.

[0034] Continue to refer to Figure 1 Furthermore, a second hollow interlayer is provided inside the wall where the coolant inlet 25 and the wall where the coolant outlet 26 are located. The second hollow interlayer is connected to the coolant cavity 21. After the coolant enters the coolant inlet 25, it enters the coolant cavity 21 through the second hollow interlayer where the coolant inlet 25 is located, and then enters the second hollow interlayer where the coolant outlet 26 is located from the coolant cavity 21. This increases the residence time of the coolant in the cooling jacket, allowing it to fully absorb heat before being discharged from the coolant outlet 26. Furthermore, the first hollow interlayer 131 is connected to the second hollow interlayer, so that the first hollow interlayer 111 is no longer connected to the coolant inlet 25 and the coolant outlet 26 through pipelines, but is connected through the second hollow interlayer.

[0035] However, it should be noted that the shape of the jacket portion 1 can be rectangular, cylindrical, triangular, etc., and those skilled in the art can set the shape of the jacket portion 1 according to the shape of the pump head. This utility model does not impose any restrictions on this. As long as it can fully fit the pump head, it falls within the scope of protection of this utility model. In addition, the shape of the coolant cavity 21 and the cover plate 3 used to enclose the coolant cavity 21 can be rectangular, circular, triangular, etc., and those skilled in the art can set it according to their needs, and it falls within the scope of protection of this utility model.

[0036] In one possible implementation, refer to Figure 1An internal coolant pipe is disposed within the coolant cavity 21 and is connected to the coolant inlet 25 and the coolant outlet 26, respectively. The internal coolant pipe is serpentine within the coolant cavity 21 to form a maze structure (not shown), thereby further increasing the residence time of the coolant within the coolant cavity 21 and allowing it to fully absorb heat from the jacket portion 1. It should also be noted that the shape of the internal coolant pipe, in addition to the above-described structure, can also be other conventional shapes. Those skilled in the art can customize the shape of the internal coolant pipe as needed, and all such configurations fall within the scope of protection of the present invention. Optionally, the coolant within the coolant cavity 21 can be circulating water or a refrigerant. The coolant outlet pipe is connected to a condenser. After entering the condenser, the coolant dissipates heat through the condenser and then flows back into the coolant inlet 25. A fan can be installed at the condenser to dissipate heat from the condenser through air cooling. Alternatively, the condenser can be placed within a water tank to dissipate heat from the condenser through the water tank, and so on. Those skilled in the art can customize the heat dissipation method of the condenser as needed, and the present invention does not impose any restrictions on this.

[0037] Reference Figure 1 and Figure 5 Furthermore, the outer side of the cooling liquid cavity 21 of the cooling unit 2 is the cooling unit outer edge 22. A sealing groove 23 is provided on the cooling unit outer edge 22, and a sealing gasket is provided in the sealing groove 23. When the cover plate 3 is placed on the cooling liquid cavity 21, the sealing gasket is located between the cover plate 3 and the sealing groove 23 to seal the gap between the cover plate 3 and the cooling liquid cavity 21. Furthermore, threaded holes 24 are provided on the cooling unit outer edge 22, and threaded holes are also provided on the cover plate 3. Bolts are inserted into the two threaded holes for locking. Optionally, a handle is provided on the cover plate 3, so that the cover plate 3 can be easily opened to allow for inspection and maintenance of the coolant pipeline in the cooling liquid cavity 21. It should also be noted that in addition to being connected by bolts, the cover plate 3 and the cooling unit outer edge 22 can also be connected by bonding, snap-fitting, etc. Those skilled in the art can set the connection method between the cover plate 3 and the cooling unit outer edge 22 as needed, and all of these methods fall within the scope of protection of the present utility model. In addition, in order to avoid parts on the pump head, avoidance holes 12 are provided on the top and the top of the jacket part 1.

[0038] In another embodiment, referring to Figure 6The cooling jacket includes a detachably connected jacket portion 1 and a cooling portion 2, an opening being provided on one side of the jacket portion 1, and a cooling liquid cavity 21 being provided on one side of the cooling portion 2. The cooling liquid cavity 21, the cooling liquid inlet 25, and the cooling liquid outlet 26 are all provided on the cooling portion 2, and bolt mounting holes are provided on the jacket portion 1 and the cooling portion 2. After a wall of the jacket portion 1 and a wall of the cooling portion 2 are pressed tightly together, the two can be detachably connected by bolts. Through the above arrangement, the cooling jacket can match different types of metering pump heads by replacing different jacket portions 1 without changing the cooling portion 2, thereby improving the applicability of the cooling jacket and reducing costs. Of course, the connection method between the cooling portion 2 and the jacket portion 1 is not limited to bolt connection, it can also be snap-on connection or welding, etc. Those skilled in the art can set the connection method of the two according to their needs, and all fall within the protection scope of the present utility model.

[0039] In summary, the cooling jacket of the present invention performs heat exchange by completely fitting the jacket portion 1 with the pump head of the metering pump, and then takes away the heat on the jacket portion 1 through the coolant cavity 21 provided on the cooling jacket, thereby reducing the temperature of the pump head. Furthermore, by providing a hollow interlayer in the wall where the coolant inlet 25 is located and the wall where the coolant outlet 26 is located, the heat exchange area of ​​the coolant can be increased, thereby improving the cooling effect. In addition, in order to achieve rapid cooling when the temperature of the jacket portion 1 is high, a hollow interlayer is provided in the partition 11 between the jacket portion 1 and the coolant cavity 21 for flowing the coolant, thereby further increasing the cooling speed of the jacket portion 1 and preventing the instantaneous temperature of the jacket portion 1 from suddenly rising. The cooling jacket of the present invention has a simple structure and low manufacturing cost, and different jacket portions 1 can be selected according to different types of pump heads.

[0040] As stated in the first paragraph of this section, the above-mentioned implementation mode is only used to illustrate the principle of the present invention and is not intended to limit the scope of protection of the present invention. Without departing from the principle of the present invention, those skilled in the art can adjust the above-mentioned structure so that the present invention can be applied to more specific application scenarios.

[0041] In addition, the present invention further provides a metering pump, which comprises the cooling jacket and pump head described in any one of the above embodiments, wherein the jacket portion 1 of the cooling jacket is sleeved on the pump head.

[0042] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A cooling jacket for a metering pump, characterized in that: The cooling jacket includes a cooling portion and a jacket portion. An opening is provided on one side of the jacket portion so that the jacket portion is sleeved on the pump head of the metering pump. The cooling portion abuts against the jacket portion for heat exchange. A cooling liquid cavity is provided on the cooling portion, and a cooling liquid inlet and a cooling liquid outlet communicated with the cooling liquid cavity are provided on the cooling jacket.

2. The cooling jacket for a metering pump according to claim 1, characterized in that: A partition is provided between the opening of the jacket portion and the coolant cavity, a first hollow interlayer is provided inside the partition, and the first hollow interlayer is communicated with the coolant inlet and the coolant outlet.

3. The cooling jacket for a metering pump according to claim 1, characterized in that: A second hollow interlayer is provided inside the wall where the coolant inlet is located and the wall where the coolant outlet is located, and the second hollow interlayer is communicated with the coolant cavity.

4. The cooling jacket for a metering pump according to claim 1, characterized in that: An inner coolant pipe is provided in the coolant cavity. The inner coolant pipe is communicated with the coolant inlet and the coolant outlet respectively. The inner coolant pipe meanders in the coolant cavity to form a maze structure.

5. The cooling jacket for a metering pump according to claim 1, characterized in that: The cooling liquid cavity is provided with a cover plate which can open and close the cooling liquid cavity.

6. The cooling jacket for a metering pump according to claim 5, characterized in that: A sealing groove is provided on the outer edge of the cooling portion, a sealing gasket is provided in the sealing groove, and the sealing gasket is provided between the cover plate and the cooling liquid cavity.

7. The cooling jacket for a metering pump according to claim 6, characterized in that: The outer edge of the cooling portion is further provided with a threaded hole, and the bolts are fastened to the threaded hole after passing through the cover plate.

8. The cooling jacket for a metering pump according to claim 1, characterized in that: The top of the jacket portion is provided with an avoidance hole; and / or the bottom of the jacket portion is provided with an avoidance hole.

9. The cooling jacket for a metering pump according to claim 1, characterized in that: The coolant inlet is provided with a coolant inlet pipe, and the coolant inlet pipe is threadedly connected to the coolant inlet; and / or, the coolant outlet is provided with a coolant outlet pipe, and the coolant outlet pipe is threadedly connected to the coolant outlet.

10. A metering pump, characterized in that: The metering pump is provided with a cooling jacket for a metering pump according to any one of claims 1 to 9.

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