Liquid adding device for sealing liquid circulating tank of sand mill

Abstract

The utility model relates to a sand mill sealing liquid circulation tank liquid adding device which comprises a sealing liquid circulation tank, a liquid adding opening of a sealing liquid circulation tank end cover of the sealing liquid circulation tank is connected with a pipe connector, the other end of the pipe connector is connected with one end of a first mini ball valve, and the other end of the first mini ball valve is provided with a clamping type connector. A sealing liquid adding structure is mounted at the other end of the clamping type connector; a liquid adding funnel of the sealing liquid adding structure is fixedly connected with one end of a first clamping type elbow connector through a first hoop, the other end of the first clamping type elbow connector is fixedly connected with one end of a second clamping type elbow connector through a second hoop, and the other end of the second clamping type elbow connector is fixedly connected with a clamping type connector through a third hoop. The circulating tank sealing liquid adding device can be used for quickly and conveniently adding the circulating tank sealing liquid on the sand mill, and provides reliable guarantee for efficient operation of a mechanical seal of the sand mill, greatly reducing the working procedures of adding the sealing liquid, shortening the time of adding operation and avoiding environmental and product pollution caused by leakage when the sealing liquid is added.

Description

[Technical field]

[0001] The utility model relates to the technical field of grinding equipment, in particular to a liquid adding device for a sealing liquid circulation tank of a sand mill. [Background Technology]

[0002] Sand mills are the most commonly used and effective grinding equipment, utilizing friction, compression, and collision between grinding media to disperse agglomerated materials. Sand mills not only disperse materials but also provide highly efficient ultrafine grinding. They are widely used in the grinding and dispersion of coatings, pigments, paints, inks, adhesives, cosmetics, papermaking, food, insulation materials, magnetic materials, and other products in the food and chemical industries.

[0003] Many existing sand mills use mechanical seals, primarily due to their excellent sealing performance, low end-face temperatures, minimal cooling water consumption, minimal end-face wear, and long life. Mechanical seals must meet the technical requirements of the agitator shaft and the medium used, and have adequate lubrication conditions to ensure long-term, reliable operation. According to API 682, the selection of sealing fluids (often also referred to as sealing oil, buffer, isolation fluid, flushing medium, etc.) is considered when selecting the seal auxiliary system for both non-pressurized double-end mechanical seals and pressurized double-end mechanical seals. Sealing fluids are generally low-viscosity oils or water that will not react with or contaminate the medium. Volatile fluids should be avoided. Commonly used fluids include readily available and low-cost soft water, ethylene glycol, ethylene glycol-water combination, motor oil, white oil, and vegetable oil.

[0004] The long-term high-speed grinding and mixing process of a sand mill generates mechanical vibration, axial movement of the agitator shaft, long-term mechanical wear, and aging wear of seals, all of which can lead to leakage of the sand mill's mechanical seal fluid. Although the loss of seal fluid leakage is minimal compared to production costs, if the mechanical seal lacks flushing and cooling with seal fluid, dry friction between the moving and static seal faces will occur, rapidly increasing the seal temperature until it burns out, eventually rendering the sand mill inoperable. This necessitates downtime for maintenance and replacement of the mechanical seal and other damaged parts, disrupting normal production and significantly increasing maintenance costs. Therefore, in addition to installing electronic monitoring devices such as pressure switches and temperature switches on the seal fluid circulation tank to ensure sufficient seal fluid is always present during production, it is also necessary to facilitate the timely addition of seal fluid if the level falls below the minimum level mark on the circulation tank. If the maintainability of the sand mill sealing liquid system can be improved and a convenient and quick sealing liquid adding structure can be designed, while also preventing the splashing of sealing liquid during the adding process from polluting the production environment or products, it will be of great practical significance and application value.

[0005] Based on the above reasons, a new type of device for adding sealing liquid to the sealing liquid circulation tank is of great practical significance and application value. At the same time, the convenience of disassembly and maintenance also needs to be considered. The device for quickly adding liquid to the sealing liquid circulation tank with anti-overflow is developed to meet this demand. [Utility Model Content]

[0006] The purpose of the present utility model is to solve the above-mentioned deficiencies and provide a sand mill sealing liquid circulation tank adding device, which can be used for the rapid and convenient addition of sealing liquid in the circulation tank of the sand mill, thereby providing reliable protection for the efficient operation of the mechanical seal of the sand mill, greatly reducing the process of adding sealing liquid, shortening the time of adding operation, and avoiding the pollution of the environment and products caused by leakage of sealing liquid during addition, thereby extending the service life of the equipment and reducing the cost of use and maintenance.

[0007] In order to achieve the above-mentioned purpose, a sand mill sealing liquid circulation tank filling device is designed, including a sealing liquid circulation tank 10, a sealing liquid circulation tank end cover 9 is installed on the top of the sealing liquid circulation tank 10, and the filling port of the sealing liquid circulation tank end cover 9 is connected to a pipe joint 6, the other end of the pipe joint 6 is connected to one end of the first mini ball valve 51, the other end of the first mini ball valve 51 is installed with a card joint 4, and the other end of the card joint 4 is installed with a sealing liquid filling structure; the sealing liquid filling structure includes a filling funnel 1, a first card joint 71 and a second card joint 72, the filling funnel 1 is fixedly connected to one end of the first card joint 71 through a first clamp 21, the other end of the first card joint 71 is fixedly connected to one end of the second card joint 72 through a second clamp 22, and the other end of the second card joint 72 is fixedly connected to the card joint 4 through a third clamp 23.

[0008] Furthermore, the sealing liquid adding structure installed at the other end of the card joint 4 is replaced by a card cover 11, and the card cover 11 replaces the second card elbow joint 72 and is installed on the card joint 4, so that the sealing liquid circulation tank of the sand mill is in a reliably closed state. After inflation and pressurization to reach the rated pressure requirement, the sealing liquid pressure device can start and operate normally.

[0009] Furthermore, a sealing liquid leakage prevention structure is provided on the sealing liquid circulation tank 10, and the sealing liquid leakage prevention structure includes a liquid receiving pan 8 with a drain hole, a second mini ball valve 52 and a hose connector 12. The liquid receiving pan 8 with a drain hole is welded to the sealing liquid circulation tank 10, and one end of the second mini ball valve 52 is threadedly connected to the liquid receiving pan 8 with a drain hole, and the other end of the second mini ball valve 52 is threadedly connected to the hose connector 12, so that when there is splashing sealing liquid during the filling process or sealing liquid remaining in the pipeline when the sealing liquid filling structure is disassembled after filling, the sealing liquid can be collected by the liquid receiving pan with a drain hole, thereby avoiding pollution to the environment of the production equipment or the products produced.

[0010] Furthermore, the first clamp 21 , the second clamp 22 and the third clamp 23 are all provided with a card-type sealing gasket 3 , and are sealed by the card-type sealing gasket 3 .

[0011] Furthermore, the sealing liquid circulation tank end cover 9 is connected to the pipe joint 6 via a thread, and the first mini ball valve 51 is connected to the card joint 4 via a thread, so that the operation is very convenient.

[0012] Furthermore, a liquid level window is provided on the sealing liquid circulation tank 10, and the liquid level of the sealing liquid in the sealing liquid circulation tank 10 can be observed through the liquid level window. When the specified liquid level is reached, the first mini ball valve can be immediately closed to cut off the inflow of the sealing liquid, so that the liquid level can be accurately controlled to reach the required height requirement.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] (1) The utility model adds a mini ball valve to the end cover, which facilitates timely closing of the liquid adding channel when the sealing liquid is added in excess, ensuring that the liquid level in the sealing liquid circulation tank is accurately within the specified range;

[0015] (2) The two elbow joints at the upper end of the mini ball valve of the utility model can make the liquid adding funnel avoid the parts at the upper end of the sealing liquid circulation tank, and at the same time can also increase the diameter of the adding funnel as much as possible, so that it is more convenient to add the sealing liquid;

[0016] (3) When adding sealing liquid or removing and replacing the device, the residual sealing liquid in the pipeline can be collected in the liquid receiving tray with a drain hole, thus avoiding contamination of the sand mill or the produced products;

[0017] (4) When the liquid in the liquid receiving tray needs to be discharged, the utility model can be discharged by connecting the hose connector with a rubber hose and then opening the mini ball valve at the lower end. This realizes efficient and convenient addition of sealing liquid and can effectively avoid the problem of environmental or product pollution caused by splashing and leakage;

[0018] (5) The utility model is highly reliable and environmentally friendly, easy to operate, and can be stopped at any time according to plan or actual needs on site to add or replace the sealing liquid. There is no need to remove the end cover of the sealing liquid like traditional sand mills, and there is no need to do a lot of preliminary preparation work, and there is no need to worry about frequent removal of the end cover plug causing thread damage or seal failure. There is no need for a large amount of auxiliary equipment and a lot of time-consuming and labor-intensive adding and replacing of the sealing liquid, thereby greatly extending the service life of related parts;

[0019] In summary, the utility model can be used for the rapid and convenient addition of sealing liquid to the circulation tank of the sand mill, providing reliable protection for the efficient operation of the mechanical seal of the sand mill, significantly reducing the process of adding sealing liquid, shortening the time of the addition operation, and avoiding the pollution of the environment and products caused by leakage of sealing liquid during addition, thereby extending the service life of the equipment, reducing the cost of use and maintenance, and meeting the full utilization of the efficient production capacity of the sand mill, improving production efficiency and maximizing economic benefits. Therefore, a sand mill equipped with the device with the sealing liquid circulation tank addition can save a considerable amount of maintenance expenses while improving the sand mill's startup utilization rate, meeting the needs of saving costs and increasing efficiency, and is worthy of promotion and application. [Brief Description of the Drawings]

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 This is a schematic diagram of the installation of the utility model when it is replaced by a cover;

[0022] Figure 3 This is a schematic diagram of the top view of the structure of the utility model;

[0023] In the figure: 1. Liquid adding funnel; 21. First clamp; 22. Second clamp; 23. Third clamp; 3. Cassette sealing gasket; 4. Cassette joint; 51. First mini ball valve; 52. Second mini ball valve; 6. Pipe joint; 71. First cassette elbow joint; 72. Second cassette elbow joint; 8. Liquid collecting tray with drain hole; 9. End cover of sealing liquid circulation tank; 10. Sealing liquid circulation tank; 11. Cassette blind cover; 12. Hose joint. [Specific implementation method]

[0024] As attached Figure 1 To the attached Figure 3As shown, the utility model provides a sand mill sealing liquid circulation tank filling device, including a sealing liquid circulation tank 10, a sealing liquid circulation tank end cover 9 is installed on the top of the sealing liquid circulation tank 10, the filling port of the sealing liquid circulation tank end cover 9 is connected to a pipe joint 6, the other end of the pipe joint 6 is connected to one end of a first mini ball valve 51, the other end of the first mini ball valve 51 is installed with a card joint 4, and the other end of the card joint 4 is installed with a sealing liquid filling structure; the sealing liquid filling structure includes a filling funnel 1, a first card elbow joint 71 and a second card elbow joint 72, the filling funnel 1 is fixedly connected to one end of the first card elbow joint 71 through a first clamp 21, and the other end of the first card elbow joint 71 is fixedly connected to the first card elbow joint 71 through a first clamp 21. The second clamp 22 is fixedly connected to one end of the second clamp-type elbow joint 72, and the other end of the second clamp-type elbow joint 72 is fixedly connected to the clamp joint 4 through the third clamp 23; the first clamp 21, the second clamp 22 and the third clamp 23 are all equipped with a clamp-type sealing gasket 3, and are sealed by the clamp-type sealing gasket 3; in the liquid adding device, the sealing liquid adding structure installed at the other end of the clamp joint 4 is replaced by a clamp-type blind cover 11, and the clamp-type blind cover 11 replaces the second clamp-type elbow joint 72 and is installed on the clamp joint 4, so that the sealing liquid circulation tank of the sand mill is in a reliably closed state. After inflation and pressurization to reach the rated pressure requirement, the sealing liquid pressure device can start and operate normally.

[0025] A sealing liquid leakage prevention structure is provided on the sealing liquid circulation tank 10, which includes a liquid receiving tray 8 with a drain hole, a second mini ball valve 52 and a hose connector 12. The liquid receiving tray 8 with a drain hole is welded to the sealing liquid circulation tank 10, and one end of the second mini ball valve 52 is threadedly connected to the liquid receiving tray 8 with a drain hole, and the other end of the second mini ball valve 52 is threadedly connected to the hose connector 12. Therefore, when there is splashing sealing liquid during the filling process or sealing liquid remaining in the pipeline when the sealing liquid filling structure is disassembled after filling, the sealing liquid can be collected by the liquid receiving tray with a drain hole, thereby avoiding pollution to the environment of the production equipment or the products produced.

[0026] The sealing liquid circulation tank end cap 9 is threadedly connected to the pipe joint 6, and the first mini ball valve 51 is threadedly connected to the card joint 4, making operation very convenient. The sealing liquid circulation tank 10 is provided with a liquid level window, through which the sealing liquid level in the sealing liquid circulation tank 10 can be observed. When the specified liquid level is reached, the first mini ball valve can be immediately closed to cut off the flow of sealing liquid, thereby accurately controlling the liquid level to the required height.

[0027] The device for quickly adding liquid to a sealing liquid circulation tank is realized by adding a card-type liquid adding funnel to the sealing liquid circulation tank, so that the adding work of the sealing liquid becomes simple and quick. Unlike the traditional sealing liquid adding, it is not necessary to first remove the plug on the circulation tank, which is time-consuming and laborious, and then one person needs to hold the funnel while another person carefully adds the sealing liquid into it. Finally, before tightening the plug, it is necessary to check whether the seal needs to be replaced. The utility model only requires one maintenance personnel to operate conveniently, and the sealing liquid can be added in time as needed at any time, effectively maintaining sufficient sealing liquid in the circulation tank, avoiding the failure of mechanical seal burning caused by insufficient sealing liquid, and avoiding the frequent removal of the sealing tank end cover plug while ensuring the grinding efficiency of the sand mill, thereby doubling the service life of sealing O-rings, plugs and other parts.

[0028] In the liquid adding device, the liquid funnel 1 and the first clip-on elbow joint 71 and the second clip-on elbow joint 72 are connected in series, and then connected to the clip joint 4. The connection is fixed by the first clamp 21, the second clamp 22, and the third clamp 23 respectively, and sealed by the clip-on sealing gasket 3. One end of the first mini ball valve 51 is threadedly connected to the clip joint 4, and the other end is connected to the pipe joint 6 fixed on the end cover 9 of the sealing liquid circulation tank. The above components constitute the sealing liquid adding structure. The liquid receiving pan 8 with a drain hole is welded to the sealing liquid circulation tank 10. One end of the second mini ball valve 52 is threadedly connected to the liquid receiving pan 8 with a drain hole, and the other end is threadedly connected to the hose joint 12. The above components constitute the sealing liquid leakage prevention structure. When the liquid addition is completed and the adding funnel 1 is not in use, the third clamp 23 can be quickly loosened, and the adding funnel 1, the first clamp elbow joint 71, the second clamp elbow joint 72, the first clamp 21, and the second clamp 22 connected in series can be directly removed, and then the second clamp elbow joint 72 is replaced by the clamp cover 11 and installed on the clamp joint 4, so that the sealing liquid circulation tank of the sand mill is in a reliably closed state. After inflation and pressurization to reach the rated pressure requirement, the sand mill can start and operate normally.

[0029] The present invention is further described below in conjunction with specific embodiments:

[0030] The utility model provides a device for adding liquid to a sealing liquid circulation tank, which mainly includes a liquid adding funnel 1, a first clamp 21, a second clamp 22, a third clamp 23, a cardioid seal 3, a cardioid connector 4, a first mini ball valve 51, a second mini ball valve 52, a pipe joint 6, a first cardioid elbow connector 71, a second cardioid elbow connector 72, a liquid receiving tray with a drain hole 8, a sealing liquid circulation tank end cap 9, a sealing liquid circulation tank 10, a cardioid cover 11, and a hose connector 12. The liquid adding funnel 1 is fixed together by the first clamp 21, the cardioid seal 3, and the first cardioid elbow connector 71, and then further fixed together by the second clamp 22, the cardioid seal 3, and the second cardioid elbow connector 72, forming a liquid adding funnel structure. A pipe joint 6 is threadedly connected to the sealing liquid circulation tank end cap 9, and the first mini ball valve 51 is then installed on the other end of the pipe joint 6. The cardioid connector 4 is installed on the other end of the first mini ball valve 51, forming a liquid adding control structure. Finally, the addition funnel structure and the addition control structure are connected together via the third clamp 23 and the card-type sealing gasket 3, forming a complete sealing liquid addition structure. When the sealing liquid needs to be added to the sealing tank, simply open the first mini ball valve 51, add the sealing liquid to the addition funnel 1, and observe the liquid level through the liquid level window on the sealing liquid circulation tank 10. When the required liquid level is reached, the first mini ball valve 51 can be immediately closed to cut off the flow of sealing liquid, thereby accurately controlling the liquid level to the required height.

[0031] The liquid receiving pan 8 with a drain hole is welded to the sealing liquid circulation tank 10, and one end of the second mini ball valve 52 is threadedly connected to the liquid receiving pan 8 with a drain hole, and the other end is threadedly connected to the hose connector 12. The above components constitute a sealing liquid leakage prevention structure. When there is splashing sealing liquid during the filling of the sealing liquid or when the sealing liquid adding structure is disassembled after the filling is completed, there is residual sealing liquid in the pipeline, which can be collected by the liquid receiving pan 8 with a drain hole, avoiding pollution to the environment of the production equipment or the products produced. When the sealing liquid in the liquid receiving pan 8 with a drain hole needs to be discharged, it is only necessary to put a hose of appropriate size and length on the hose connector 12, open the second mini ball valve 52, and the sealing liquid in the liquid receiving pan 8 with a drain hole can be diverted to the designated container for recovery.

[0032] After the addition is completed, the addition funnel 1 can be disassembled for cleaning and storage for the sake of beauty and tidiness. The third clamp 23 can be quickly loosened, and the addition funnel 1, the first card-type elbow joint 71, the second card-type elbow joint 72, the first clamp 21, and the second clamp 22 connected in series can be directly removed. The second card-type elbow joint 72 is then replaced with the card-type cover 11 and installed on the card-type joint 4, so that the sealing liquid circulation tank of the sand mill is in a reliably closed state. After the air is inflated and pressurized to reach the rated pressure requirement, the sealing liquid pressure device can start to operate normally (see attached Figure 2The entire process of assembling the sealing liquid device, filling the sealing liquid, and plugging the sealing device is simple and quick to operate, and can be completed quickly by a single operator without the need for other auxiliary tools or corresponding cleaning sites.

[0033] The utility model adds a first mini ball valve on the end cover, which is convenient for closing the liquid adding channel in time when the sealing liquid is added in excess, ensuring that the liquid level in the sealing liquid circulation tank is accurately within the specified range. The two elbow joints on the upper end of the mini ball valve can make the liquid adding funnel avoid the various pipes and instruments on the upper end of the sealing liquid circulation tank, thereby facilitating operation. At the same time, the diameter of the adding funnel can be increased as much as possible, which makes it more convenient to add sealing liquid (see attached Figure 3 ). When adding sealing liquid or removing and replacing the liquid adding device, the residual sealing liquid in the pipeline can be collected in the liquid receiving tray with a drain hole, which can effectively prevent the sealing liquid from contaminating the sand mill or the produced products. When the sealing liquid in the liquid receiving tray needs to be discharged, it can be connected to the hose connector with a hose, and then the second mini ball valve at the lower end is opened for discharge, which realizes efficient and convenient addition of sealing liquid, and effectively avoids the problem of environmental or product pollution due to splashing and leakage. The device is reliable and environmentally friendly, and is also very convenient to operate. The device for adding liquid to the sealing liquid circulation tank described in the utility model can be stopped at any time according to plan and actual needs on site to add or replace sealing liquid. It is no longer necessary to remove the upper end cover of the sealing liquid like a traditional sand mill, and there is no need to do a lot of preliminary preparation work, no need to worry about frequent removal of the end cover plugging causing damage to the thread or failure of the seal, and no need for a large amount of auxiliary equipment and a lot of manpower and time-consuming and labor-intensive addition and replacement of sealing liquid, thereby greatly extending the service life of related parts.

[0034] Therefore, a sand mill equipped with this sealing liquid circulation tank dosing device can save considerable maintenance costs while also improving the sand mill's operating rate, meeting the needs of cost savings and efficiency gains. By adding this circulation tank dosing device, the material consumption for adding sealing liquid level maintenance can be reduced by more than 80%, labor and cleaning time can be saved by approximately 70%, and mechanical seal damage caused by lack of sealing liquid can be reduced by 90%. The sand mill's operating time is also improved to a certain extent, which well meets the needs of modern large-scale production.

[0035] The contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field. The standard parts used can be purchased from the market. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology. The circuit connection adopts conventional connection methods in the existing technology and will not be described in detail.

[0036] The present invention is not limited to the above-mentioned embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A sand mill sealing liquid circulation tank filling device, comprising a sealing liquid circulation tank (10), wherein a sealing liquid circulation tank end cover (9) is installed at the top of the sealing liquid circulation tank (10), characterized in that: The liquid adding port of the sealing liquid circulation tank end cover (9) is connected to a pipe joint (6), the other end of the pipe joint (6) is connected to one end of a first mini ball valve (51), the other end of the first mini ball valve (51) is installed with a clamping joint (4), and the other end of the clamping joint (4) is installed with a sealing liquid adding structure; the sealing liquid adding structure comprises a liquid adding funnel (1), a first clamping elbow pipe joint (71) and a second clamping elbow pipe joint (72), the liquid adding funnel (1) is fixedly connected to one end of the first clamping elbow pipe joint (71) through a first clamping hoop (21), the other end of the first clamping elbow pipe joint (71) is fixedly connected to one end of the second clamping elbow pipe joint (72) through a second clamping hoop (22), and the other end of the second clamping elbow pipe joint (72) is fixedly connected to the clamping joint (4) through a third clamping hoop (23).

2. The sand mill sealing liquid circulation tank liquid adding device according to claim 1, characterized in that: The sealing liquid adding structure installed at the other end of the card joint (4) is replaced by a card cover (11), and the card cover (11) replaces the second card elbow joint (72) and is installed on the card joint (4).

3. The sand mill sealing liquid circulation tank liquid adding device according to claim 1, characterized in that: The sealing liquid circulation tank (10) is provided with a sealing liquid anti-leakage structure, which comprises a liquid receiving tray (8) with a drain hole, a second mini ball valve (52) and a hose connector (12). The liquid receiving tray (8) with a drain hole is welded to the sealing liquid circulation tank (10), one end of the second mini ball valve (52) is threadedly connected to the liquid receiving tray (8) with a drain hole, and the other end of the second mini ball valve (52) is threadedly connected to the hose connector (12).

4. The sand mill sealing liquid circulation tank liquid adding device according to claim 1, characterized in that: The first clamp (21), the second clamp (22) and the third clamp (23) are all provided with a card-type sealing gasket (3), and are sealed by the card-type sealing gasket (3).

5. The sand mill sealing liquid circulation tank liquid adding device according to claim 1, characterized in that: The sealing liquid circulation tank end cover (9) is connected to a pipe joint (6) via a thread, and the first mini ball valve (51) is connected to the card joint (4) via a thread.

6. The liquid adding device for the sand mill sealing liquid circulation tank according to any one of claims 1 to 5, characterized in that: The sealing liquid circulation tank (10) is provided with a liquid level window, and the liquid level of the sealing liquid in the sealing liquid circulation tank (10) is observed through the liquid level window.

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