Mortar circulating device cooling system and mortar circulating equipment

Abstract

The invention provides a mortar circulating device cooling system and mortar circulating equipment, the mortar circulating device cooling system comprises a cooling medium container used for supplying a cooling medium, and the cooling medium container comprises a cooling medium outlet and a cooling medium inlet; the cooling medium circulating pipeline is communicated between the cooling medium outlet and the cooling medium inlet; and the cooling units are sequentially communicated with the cooling medium circulating pipeline, the cooling units are arranged on the mechanical pumps in at least one mortar circulating device, and the cooling units are configured to allow cooling media to pass through the corresponding mechanical pumps so as to cool the mechanical pumps. According to the cooling system of the mortar circulating device and the mortar circulating equipment, the mechanical pump is cooled, the problem of high temperature generated when the mechanical pump in the mortar circulating device runs for a long time to convey mortar is solved, and the quality of linear cutting products is improved.

Description

Technical Field

[0001] The invention relates to the technical field of mortar supply processing, and in particular to a mortar circulation device cooling system and mortar circulation equipment. Background Art

[0002] Multi-wire cutting is one of the most effective methods for cutting large diameter silicon single crystal rods. In the multi-wire cutting process, a fluid mixed abrasive - cutting mortar (hereinafter referred to as mortar) is required. In the actual cutting process, the mortar is brought to the cutting area by the reciprocating steel wire, and the mortar brought in determines the cutting quality of the silicon wafer. The particle size and particle shape of the silicon carbide micropowder contained in the mortar brought by the steel wire are the key to determining the surface finish and cutting ability of the finished wafer of the cut material.

[0003] In the prior art, the mortar used in the multi-wire cutting machine can be transported through a mortar circulation device. The mortar circulation device mainly includes a mortar storage tank, a buffer tank, and a mortar conveying pipeline. A mechanical pump is also provided in the mortar circulation device to stir and convey the mortar.

[0004] However, mortar material is a suspension with high hardness, easy precipitation and high viscosity. The screw pump is normally in a long-term continuous operation state. When conveying mortar, a special medium with high viscosity and solid particles, high temperature is generated. The mechanical seals in the screw pump are prone to damage under long-term high temperature. If the mechanical seals in the screw pump are damaged, mortar leakage, mortar flow, density and particle size changes will easily occur, thus affecting the quality of silicon wafer products obtained by wire cutting. Summary of the invention

[0005] In order to solve at least one of the technical problems in the above-mentioned prior art, the embodiments of the present disclosure provide a mortar circulation device cooling system and a mortar circulation device.

[0006] The technical solutions provided by the embodiments of the present disclosure are as follows:

[0007] In a first aspect, an embodiment of the present disclosure provides a mortar circulation device cooling system, which is applied to a mortar circulation device, wherein the mortar circulation device includes a plurality of mechanical pumps; the mortar circulation device cooling system includes:

[0008] a cooling medium container for supplying a cooling medium, the cooling medium container comprising a cooling medium outlet and a cooling medium inlet;

[0009] A cooling medium circulation pipeline connected between the cooling medium outlet and the cooling medium inlet;

[0010] A plurality of cooling units are connected to the cooling medium circulation pipeline in sequence, and at least one of the mechanical pumps is provided with the cooling unit, and the cooling unit is constructed to allow the cooling medium to pass through the corresponding mechanical pump to cool the mechanical pump.

[0011] Exemplarily, the cooling system of the mortar circulation device also includes a submersible pump disposed in the cooling medium container.

[0012] Exemplarily, the mortar circulation device cooling system further includes:

[0013] A flow meter provided on the cooling medium circulation pipeline; and

[0014] A controller is connected to the flow meter, and is used to obtain flow data from the flow meter and determine whether the working state of the cooling system of the mortar circulation device is normal based on the flow data.

[0015] Exemplarily, the controller is specifically used to determine that the amount of cooling medium in the cooling system of the mortar circulation device is lower than the minimum amount of cooling medium, or that a blockage occurs in the cooling system of the mortar circulation device when the flow data is lower than a preset flow threshold.

[0016] Exemplarily, the mortar circulation device cooling system further includes:

[0017] a liquid level detector provided on the cooling medium container;

[0018] A flow valve provided on the cooling medium circulation pipeline;

[0019] A controller is connected to the liquid level detector and the flow valve, and is used to control the working state of the submersible pump and / or the flow valve based on control parameters, wherein the control parameters include at least one of a preset water outlet parameter and a liquid level parameter detected by the liquid level detector.

[0020] Exemplarily, the mortar circulation device includes a mortar storage tank, a buffer tank and a mortar delivery pipeline, and the several mechanical pumps include at least one of a viscometer screw pump provided on the mortar delivery pipeline, a first screw pump provided on the mortar storage tank, a second screw pump provided on the buffer tank and a third screw pump provided on the mortar circulation pipeline; each of the mechanical pumps is provided with the cooling unit, and the cooling medium circulation pipeline is connected between each of the cooling units.

[0021] Exemplarily, when the several mechanical pumps include a viscometer screw pump, a first screw pump, a second screw pump and a third screw pump, the cooling medium circulation pipeline is configured to be connected to the cooling units corresponding to the viscometer screw pump, the first screw pump, the second screw pump and the third screw pump in sequence along the cooling medium conveying direction.

[0022] Exemplarily, there are two second screw pumps, and the two second screw pumps are sequentially connected between the first screw pump and the third screw pump on the cooling medium circulation pipeline.

[0023] Exemplarily, the mechanical pump includes a pump body and a power assembly accommodated in the pump body, wherein a jacket is provided between the pump body and the power assembly, the jacket having a medium inlet and a medium outlet arranged on the pump body, and the jacket, the medium inlet and the medium outlet cooperate to form the cooling unit.

[0024] In a second aspect, an embodiment of the present disclosure provides a mortar circulation device, comprising:

[0025] A mortar circulation device, the mortar circulation device comprising a plurality of mechanical pumps; and

[0026] A mortar circulation device cooling system as described above.

[0027] The beneficial effects brought by the embodiments of the present disclosure are as follows:

[0028] The disclosed embodiments provide a mortar circulation device cooling system and a mortar circulation equipment. A cooling unit is provided on a mechanical pump in the mortar circulation device, and the cooling unit is constructed to allow a cooling medium to pass through the corresponding mechanical pump to cool the mechanical pump. In this way, a cooling medium circulation pipeline is utilized to circulate through the cooling unit on the mechanical pump to achieve the purpose of cooling the mechanical pump, thereby solving the problem of high temperature generated by long-term operation of the mechanical pump in the mortar circulation device when transporting mortar, and improving the quality of wire cutting products. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram showing the structure of a cooling system for a mortar circulation device provided in an embodiment of the present disclosure;

[0030] Figure 2 A schematic diagram showing the integrated structure of the cooling unit and the screw pump in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0032] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one", "one" or "the" do not indicate quantity restrictions, but indicate that there is at least one. Similar words such as "include" or "comprise" mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Similar words such as "connect" or "connected" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] The features such as "parallel", "perpendicular", and "same" used in the embodiments of the present disclosure include the features such as "parallel", "perpendicular", and "same" in a strict sense, as well as the cases where "approximately parallel", "approximately perpendicular", "approximately the same", etc. include certain tolerances, taking into account the tolerances associated with the measurement of specific quantities (e.g., the limitations of the measurement system), and represent the acceptable deviation range for a specific value determined by ordinary technicians in the field. For example, "approximately" can mean within one or more standard deviations, or within 3% or 5% of the value.

[0034] In addition, in this document, unless otherwise defined, the terms "substantially", "substantially", "approximately" and "about" are used to describe and explain small changes. When used with an event or situation, these terms can cover situations where the event or situation occurs exactly, and can also cover situations where the event or situation occurs approximately. For example, when used with a numerical value, these terms can include a range of variation of less than or equal to 10% of the numerical value, such as less than or equal to ±5%, less than or equal to ±4%, less than or equal to ±3%, less than or equal to ±2%, less than or equal to ±1%, less than or equal to ±0.5%, less than or equal to ±0.1%, less than or equal to ±0.05%. The term "substantially coplanar" can refer to two surfaces being arranged along the same plane in the micrometer range, for example, arranged along the same plane within 40μm, 30μm, 20μm, 10μm or 1μm.

[0035] The mortar used in the multi-wire cutting machine can be transported through the mortar circulation equipment. As shown in the figure, the mortar circulation equipment mainly includes a mortar storage tank, a buffer tank and a mortar conveying pipeline, etc. There are also several mechanical pumps in the mortar circulation equipment to stir and convey the mortar.

[0036] An embodiment of the present disclosure provides a cooling system for a mortar circulation device, which can be applied to a mortar circulation device to cool a mechanical pump in the mortar circulation device.

[0037] See also Figure 1 As shown, the cooling system of the mortar circulation device provided in the embodiment of the present disclosure includes a cooling medium container 100 , a cooling medium circulation pipeline 200 and a plurality of cooling units 300 .

[0038] The cooling medium container 100 is used to supply cooling medium, and the cooling medium container 100 includes a cooling medium outlet 110 and a cooling medium inlet 120. For example, as shown in the figure, the cooling medium container 100 can be any suitable container such as a water tank. The cooling medium can be a fluid medium or a gas medium, for example, the cooling medium can be any suitable medium such as water, coolant, oil, etc.

[0039] The cooling medium circulation pipeline 200 is connected between the cooling medium outlet 110 and the cooling medium inlet 120, and the plurality of cooling units 300 are connected to the cooling medium circulation pipeline 200 in sequence. The cooling medium circulation pipeline 200 is responsible for connecting the cooling medium outlet 110, the plurality of cooling units 300 and the cooling medium inlet 120 in series to form a complete circulation loop.

[0040] Furthermore, at least one of the mechanical pumps is provided with the cooling unit 300 , and the cooling unit 300 may be configured to allow a cooling medium to pass through the corresponding mechanical pump S so as to cool the mechanical pump S.

[0041] In the above scheme, the mechanical pump S is cooled by arranging a cooling unit 300 on the mechanical pump S in the mortar circulation device, and the cooling unit 300 is configured to allow the cooling medium to pass through the corresponding mechanical pump S. In this way, the purpose of cooling the mechanical pump S can be achieved by circulating the cooling medium in the cooling medium circulation pipeline 200 through the cooling unit 300 arranged on the mechanical pump S, thereby solving the high temperature problem generated by the long-term operation of the mechanical pump S in the mortar circulation device to transport mortar, and improving the quality of wire cutting products.

[0042] As an exemplary embodiment, the mechanical pump S may include but is not limited to a screw pump. A screw pump is a positive displacement pump widely used to transport various fluids, especially high-viscosity fluids.

[0043] like Figure 2 As shown, the main structure of the screw pump may include a pump body 10, a screw 20, a power assembly 30 and a seal 50, etc. Among them, the power assembly 30 is arranged in the pump body 10, and the power assembly 30 may include a motor and a drive shaft, etc., which are responsible for driving the screw 20 to rotate; the screw 20 may include a main screw and a driven screw, and the main screw may be composed of one or more screws. The shape and pitch design of the main screw determine the flow and pressure characteristics of the pump. The main screw rotates in the pump body 10, pushing the fluid to move along the spiral channel. The driven screw cooperates with the main screw and usually does not rotate, helping to form a sealed cavity to ensure the effective delivery of the fluid.

[0044] The seal 50 is used to prevent fluid leakage and is usually located at the inlet and outlet of the pump and the shaft. The seal 50 can be a mechanical seal, a packing seal or other types of seals. In addition, the screw pump can also include components such as bearings and flow control devices, and the specific structure of the screw pump is not limited here.

[0045] The cooling unit 300 may be integrated with the mechanical pump S, or independently provided on the mechanical pump S.

[0046] For example, see Figure 2As shown, a jacket 40 may be provided between the pump body 10 and the power assembly 30, and the jacket 40 has a medium inlet 41 and a medium outlet 42 provided on the pump body 10. The jacket 40, the medium inlet 41 and the medium outlet 42 cooperate to form the cooling unit 300. The cooling medium enters the jacket 40 from the medium inlet 41 and eventually flows to the medium outlet 42. When the cooling medium passes through the jacket 40, it can exchange heat with the power assembly 30, thereby achieving the purpose of cooling the mechanical pump S.

[0047] It can be understood that the above is only an example, and the specific structure of the cooling unit 300 is not limited thereto.

[0048] In addition, as an exemplary embodiment, Figure 1 As shown, the mortar circulation device cooling system further includes a submersible pump 130 disposed in the cooling medium container 100. The submersible pump 130 can be used to extract the cooling medium in the cooling medium container 100 so that the cooling medium enters the cooling medium circulation pipeline 200.

[0049] In addition, as an exemplary embodiment, the cooling system of the mortar circulation device further includes a flow meter 400 and a controller (not shown in the figure).

[0050] The flow meter 400 may be disposed on the cooling medium circulation pipeline 200. The flow meter 400 is used to detect the cooling medium flow rate in the cooling medium circulation pipeline 200. For example, as shown in the figure, the flow meter 400 may be disposed at the cooling medium inlet 120 of the cooling medium container 100, but is not limited thereto.

[0051] The controller is connected to the flow meter 400, and is used to obtain flow data of the flow meter 400, and based on the flow data, determine whether the working state of the cooling system of the mortar circulation device is normal.

[0052] For example, the working status of the cooling system of the mortar circulation device may include the amount of cooling medium in the cooling system of the mortar circulation device, whether the cooling system of the mortar circulation device is blocked, etc.

[0053] Specifically, the controller is used to determine that the working state of the cooling system of the mortar circulation device is abnormal when the flow data is less than a preset flow threshold. The abnormal working state includes, for example, the cooling medium liquid volume is lower than the minimum liquid volume, or blockage occurs in the cooling system of the mortar circulation device.

[0054] In some embodiments, the cooling system of the mortar circulation device may further include an alarm (not shown in the figure), and the controller is further used to control the alarm to sound an alarm when it is determined that the working state of the cooling system of the mortar circulation device is abnormal.

[0055] In addition, in some exemplary embodiments, the cooling system of the mortar circulation device also includes a liquid level detector and a flow valve, wherein the liquid level detector can be arranged on the cooling medium container 100, and the flow valve is arranged on the cooling medium circulation pipeline 200; the controller is connected to the liquid level detector and the flow valve, and the controller is used to control the working state of the submersible pump 130 and / or the flow valve based on control parameters to control the liquid level in the cooling medium container 100 within the liquid level threshold.

[0056] Wherein, the control parameter includes at least one of a preset water outlet parameter and a liquid level parameter detected by the liquid level detector.

[0057] For example, the mortar circulation device cooling system may further include a liquid replenishing component, and the liquid replenishing component is used to replenish liquid into the cooling medium container 100.

[0058] The preset water outlet parameters may include the liquid outlet volume and liquid outlet speed of the cooling medium transported from the cooling medium container 100. The controller may calculate the liquid outlet time when the liquid volume of the cooling medium in the cooling medium container 100 reaches the minimum liquid volume based on the liquid outlet volume and liquid outlet speed. Based on the liquid outlet time, the controller may control the fluid replenishment component to replenish the cooling medium container 100.

[0059] For example, the controller may also control the liquid replenishing component to replenish the cooling medium container 100 with liquid based on the liquid level parameter detected by the liquid level detector when the liquid level parameter is lower than a preset liquid level.

[0060] In addition, in some exemplary embodiments, the mortar circulation device includes a mortar storage tank, a buffer tank and a mortar delivery pipeline, and the several mechanical pumps S include at least one of a viscometer screw pump S1 provided on the mortar delivery pipeline, a first screw pump S2 provided on the mortar storage tank, a second screw pump S3 provided on the buffer tank and a third screw pump S4 provided on the mortar circulation pipeline; each of the mechanical pumps S is provided with the cooling unit 300, and the cooling medium circulation pipeline 200 is connected between each of the cooling units 300.

[0061] The viscometer screw pump S1 is a device specially designed for measuring and conveying high viscosity fluids. It combines the structural characteristics of a screw pump with the function of viscosity measurement. The viscometer screw pump S1 is usually equipped with a viscosity sensor that can monitor the viscosity of the fluid in real time. Viscosity data can be obtained by measuring the flow characteristics of the fluid in the pump.

[0062] The first screw pump S2 is arranged on the mortar storage tank, and is mainly responsible for stirring the mortar in the mortar storage tank. That is to say, the first screw pump S2 is a stirring screw pump, and its screw 20 is designed not only for conveying fluid, but also for stirring. The rotation of the screw 20 can effectively mix fluids of different components, and is particularly suitable for processing high-viscosity and non-uniform fluids.

[0063] The second screw pump S3 can be arranged on the buffer tank to improve the fluidity of the mortar, etc. In some embodiments, there can be at least two second screw pumps S3. The third screw pump S4 can be arranged on the mortar circulation pipeline to further transport the mortar and improve the fluidity of the mortar, etc.

[0064] In the above solution, the cooling unit 300 may be provided on each of the screw pumps, but the present invention is not limited thereto.

[0065] In some exemplary embodiments, Figure 1 As shown, when the several mechanical pumps S include a viscometer screw pump S1, a first screw pump S2, a second screw pump S3 and a third screw pump S4, the cooling medium circulation pipeline 200 is configured to be connected to the cooling units 300 corresponding to the viscometer screw pump S1, the first screw pump S2, the second screw pump S3 and the third screw pump S4 in sequence along the cooling medium conveying direction.

[0066] As an illustrative embodiment, see Figure 1 As shown, there are two second screw pumps S3, and the two second screw pumps S3 are sequentially connected between the first screw pump S2 and the third screw pump S4 on the cooling medium circulation pipeline 200.

[0067] The cooling system for the mortar circulation device provided in the embodiment of the present disclosure is applied to the above-mentioned mortar circulation device, which can increase the service life of the mechanical pump S in the mortar circulation device, stabilize the quality of the mortar, improve productivity and ensure product quality.

[0068] It can be understood that the above is only an example, and corresponding to different mortar circulation devices, the number and type of the mechanical pumps S are not limited thereto.

[0069] In addition, an embodiment of the present disclosure provides a mortar circulation equipment, which includes: a mortar circulation device, the mortar circulation device includes a plurality of mechanical pumps S; and a mortar circulation device cooling system provided in the embodiment of the present disclosure.

[0070] It should be noted here that the above-mentioned mortar circulation equipment provided in the embodiment of the present invention can implement all the method steps implemented in the above-mentioned mortar circulation device cooling system embodiment, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0071] There are a few points to note:

[0072] (1) The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure, and other structures may refer to the general design.

[0073] (2) For the sake of clarity, in the drawings used to describe the embodiments of the present disclosure, the thickness of layers or regions is exaggerated or reduced, that is, these drawings are not drawn according to the actual scale. It is understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "under" another element, the element may be "directly" "on" or "under" the other element or there may be intermediate elements.

[0074] (3) In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0075] The above are only specific implementations of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and the protection scope of the present disclosure shall be based on the protection scope of the claims.

Claims

1. A cooling system for a mortar circulation device, applied to a mortar circulation device, wherein the mortar circulation device comprises a plurality of mechanical pumps; characterized in that: The mortar circulation device cooling system comprises: a cooling medium container for supplying a cooling medium, the cooling medium container comprising a cooling medium outlet and a cooling medium inlet; A cooling medium circulation pipeline connected between the cooling medium outlet and the cooling medium inlet; A plurality of cooling units are connected to the cooling medium circulation pipeline in sequence, and at least one of the mechanical pumps is provided with the cooling unit, and the cooling unit is constructed to allow the cooling medium to pass through the corresponding mechanical pump to cool the mechanical pump.

2. The cooling system of the mortar circulation device according to claim 1, characterized in that: The mortar circulation device cooling system also includes a submersible pump arranged in the cooling medium container.

3. The cooling system of the mortar circulation device according to claim 1, characterized in that: The mortar circulation device cooling system also includes: A flow meter provided on the cooling medium circulation pipeline; and A controller is connected to the flow meter, and is used to obtain flow data from the flow meter and determine whether the working state of the cooling system of the mortar circulation device is normal based on the flow data.

4. The cooling system of the mortar circulation device according to claim 3, characterized in that: The controller is specifically used to determine that the amount of cooling medium in the cooling system of the mortar circulation device is lower than the minimum amount of cooling medium, or that a blockage occurs in the cooling system of the mortar circulation device when the flow data is lower than a preset flow threshold.

5. The cooling system of the mortar circulation device according to claim 2, characterized in that: The mortar circulation device cooling system also includes: a liquid level detector provided on the cooling medium container; A flow valve provided on the cooling medium circulation pipeline; A controller is connected to the liquid level detector and the flow valve, and is used to control the working state of the submersible pump and / or the flow valve based on control parameters, wherein the control parameters include at least one of a preset water outlet parameter and a liquid level parameter detected by the liquid level detector.

6. The cooling system of the mortar circulation device according to claim 1, characterized in that: The mortar circulation device includes a mortar storage tank, a buffer tank and a mortar delivery pipeline. The several mechanical pumps include at least one of a viscometer screw pump arranged on the mortar delivery pipeline, a first screw pump arranged on the mortar storage tank, a second screw pump arranged on the buffer tank and a third screw pump arranged on the mortar circulation pipeline; each of the mechanical pumps is provided with the cooling unit, and the cooling medium circulation pipeline is connected between each of the cooling units.

7. The cooling system of the mortar circulation device according to claim 6, characterized in that: When the several mechanical pumps include a viscometer screw pump, a first screw pump, a second screw pump and a third screw pump, the cooling medium circulation pipeline is configured to be connected to the cooling units corresponding to the viscometer screw pump, the first screw pump, the second screw pump and the third screw pump in sequence along the cooling medium conveying direction.

8. The cooling system of the mortar circulation device according to claim 7, characterized in that: There are two second screw pumps, and the two second screw pumps are sequentially connected between the first screw pump and the third screw pump on the cooling medium circulation pipeline.

9. The cooling system of the mortar circulation device according to claim 1, characterized in that: The mechanical pump includes a pump body and a power assembly accommodated in the pump body, wherein a jacket is provided between the pump body and the power assembly, the jacket having a medium inlet and a medium outlet arranged on the pump body, and the jacket, the medium inlet and the medium outlet cooperate to form the cooling unit.

10. A mortar circulation device, characterized in that: include: A mortar circulation device, wherein the mortar circulation device comprises a plurality of mechanical pumps; and A cooling system for a mortar circulation device as claimed in any one of claims 1 to 9.

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