A viscous material delivery device and system

Abstract

The utility model relates to material conveying technical field discloses a kind of viscous material conveying device and system, device includes first conveying pipe, first reversing valve, second conveying pipe, third conveying pipe and first conveying pump, first conveying pipe is used to connect in first material container;First reversing valve is equipped with first interface, second interface, third interface and fourth interface, first interface connects first conveying pipe;The both ends of second conveying pipe are connected with second interface and third interface respectively;One end of third conveying pipe is connected with fourth interface, and the other end of third conveying pipe is used to connect second material container;First conveying pump is installed in second conveying pipe.This application connects first reversing valve in feeding passage, carries out pressure relief protection to feeding passage by switching the interface of communication, avoid material accumulation in feeding passage, and avoid the risk of material accumulation caused by setting bypass pipeline and safety valve.

Description

Technical Field

[0001] This utility model relates to the field of material conveying technology, and in particular to a viscous material conveying device and system. Background Technology

[0002] In the production of viscous materials such as oyster sauce and other sauces, products are typically stored in tanks, and multiple tanks can be connected via pipelines. Brewed soy sauce and other sauces are viscous materials. In existing technologies, to prevent overpressure issues in the main feed pipeline, a bypass pipeline with a safety valve is added. During production, material is output through the main feed pipeline, and the safety valve on the bypass pipeline remains closed. When the pressure exceeds a safety setpoint, the safety valve opens automatically (mechanically or electrically) to allow for bypass backflow and pressure relief, providing protection. However, the bypass pipeline is usually connected to the main feed pipeline via a tee fitting, which can create dead angles at the connection point. Furthermore, due to the safety valve's own structural design, there are also dead angles between the safety valve inlet shut-off valve and the safety valve inlet flange, leading to a risk of material accumulation in the bypass pipeline during pressure relief and backflow, affecting the safe operation of the entire conveying system. Utility Model Content

[0003] The purpose of this invention is to provide a viscous material conveying device and system to solve the problem that there is a risk of material accumulation when conveying viscous materials in the prior art during pressure relief and backflow.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: One aspect of this utility model is to provide a viscous material conveying device, comprising: The first conveying pipe is used to connect to the first material container; The first reversing valve is provided with a first interface, a second interface, a third interface and a fourth interface, and the first interface is connected to the first delivery pipe; The second delivery pipe is connected at both ends to the second interface and the third interface, respectively. The third conveying pipe is connected at one end to the fourth interface and at the other end to the second material container; The first delivery pump is installed in the second delivery pipe; The first reversing valve has a first state and a second state. In the first state, the first interface is connected to the second interface, and the third interface is connected to the fourth interface, so that the first conveying pipe, the second conveying pipe and the third conveying pipe are connected to form a feeding passage. In the second state, the second interface is connected to the third interface so that the first reversing valve and the second delivery pipe are connected to form a circulation loop.

[0005] In some embodiments, it also includes: The second reversing valve has a first port, a second port and a third port, with the first port connected to the first delivery pipe; The fourth delivery pipe is connected at both ends to the second port and the first interface, respectively; The first cleaning tube is connected at one end to the third port and at the other end to the fourth conveying tube; A second delivery pump is installed in the first cleaning pipe; The second cleaning pipe is connected at one end to the third conveying pipe and at the other end to the second material container; The second reversing valve has a first feeding state and a first cleaning state. In the first feeding state, the first port and the second port are connected; in the first cleaning state, the first port and the third port are connected.

[0006] In some embodiments, it also includes: The third cleaning pipe has one end connected to the first or fourth conveying pipe and the other end connected to a water source and / or a cleaning agent supply source. The third reversing valve is provided with a first port, a second port and a third port. The first port is connected to the third conveying pipe, and the connection position of the second cleaning pipe and the third conveying pipe is located between the fourth interface and the first port. The fifth conveying pipe has one end connected to the second port and the other end connected to the second material container; The fourth cleaning tube is connected to the third port; The third reversing valve has a second feeding state and a second cleaning state. In the second feeding state, the first port is connected to the second port; in the second cleaning state, the first port is connected to the third port.

[0007] In some embodiments, it also includes: A pressure detection device is installed in the third delivery pipe; The controller, the pressure detection device, the first delivery pump and the first reversing valve are respectively electrically connected to the controller.

[0008] In some embodiments, a flow detection device is further included, which is installed in the third delivery pipe, the flow detection device being electrically connected to the controller, and the flow detection device being located downstream of the pressure detection device.

[0009] In some embodiments, a coolant supply device and a coolant detection device are further included. The coolant supply device is connected to the first delivery pump and is used to supply coolant to the first delivery pump. The coolant detection device is connected to the first delivery pump and is used to detect whether coolant flows into the first delivery pump.

[0010] In some embodiments, a filter is also included, installed in the first delivery pipe, the filter being used to filter materials.

[0011] In some embodiments, a level switch is also included, which is installed in the first delivery pipe.

[0012] Another aspect of this utility model is to provide a viscous material conveying system, comprising: The viscous material conveying device described above; The first material container is connected to the first conveying pipe; The second material container is connected to the third conveying pipe.

[0013] In some embodiments, it also includes: A liquid level detection device is installed in the first and second material containers; A temperature detection device is installed in the first material container and the second material container.

[0014] Compared with the prior art, the beneficial effects of the viscous material conveying device and system of this utility model embodiment are as follows: The viscous material conveying device of this utility model includes a first conveying pipe, a first reversing valve, a second conveying pipe, a third conveying pipe, and a first conveying pump. In a first state, the first reversing valve has its first interface connected to the second interface and its third interface connected to the fourth interface. The first, second, and third conveying pipes are connected to form a feeding passage. The first conveying pump drives the material to flow along the feeding passage, thus achieving material conveying. When the pressure in the feeding passage exceeds a set pressure, the first reversing valve switches from the first state to the second state. In the second state, the first reversing valve has its second interface connected to the third interface. The first reversing valve and the second conveying pipe are connected to form a circulation loop, causing the inlet and outlet of the first conveying pump to circulate, forming a pressure relief protection, thereby preventing material blockage. The first reversing valve is connected in the feeding passage. By switching the connected interfaces, it provides pressure relief protection for the feeding passage, avoiding material accumulation in the feeding passage and avoiding the risk of material accumulation caused by the installation of bypass pipes and safety valves.

[0015] This application also includes a second reversing valve, a first cleaning pipe, a second conveying pump, and a second cleaning pipe. By switching the state of the second reversing valve, the cleaning of the first conveying pipe, the fourth conveying pipe, the second conveying pipe, the third conveying pipe, and the second material container can be achieved. The second conveying pump is a centrifugal pump, ensuring the required rinsing flow rate during the cleaning process, improving the cleaning effect, and avoiding the problem of insufficient pumping flow rate and the need for long-term repeated pumping when using a rotor pump. This minimizes production downtime and significantly improves equipment utilization. During cleaning, the second conveying pump can also be used in conjunction with the first conveying pump to increase the cleaning flow rate of the conveying pipes, solving the risk of insufficient cleaning flow rate in the conveying line and resulting material accumulation in the pipes when the first conveying pump is used for cleaning. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the feeding state of the viscous material conveying system in an embodiment of this utility model; Figure 2 This is a schematic diagram of the material flow direction when the first reversing valve is in the first state in this embodiment of the utility model; Figure 3 This is a schematic diagram of the material flow direction when the first reversing valve is in the second state in an embodiment of this utility model; Figure 4 This is a schematic diagram of the second reversing valve in an embodiment of this utility model; Figure 5 This is a schematic diagram of the third reversing valve in an embodiment of this utility model; Figure 6 This is a schematic diagram of the cleaning operation of the viscous material conveying system in an embodiment of this utility model; Figure 7 This is a schematic diagram of another cleaning condition of the viscous material conveying system in this embodiment of the present invention; Numbering on the map: 10. First delivery pipe; 101. Filter; 102. Level switch; 103. First switching valve; 11. First directional valve; 111. First port; 112. Second port; 113. Third port; 114. Fourth port; 12. Second delivery pipe; 121. Second switching valve; 13. Third delivery pipe; 131. Pressure detection device; 132. Flow detection device; 133. Third switching valve; 14. First delivery pump; 141. Coolant supply device; 1411. Coolant supply pipeline; 1412. Fourth switching valve; 1413. Throttle valve; 142. Coolant detection device; 20. Second directional valve; 201. First port; 202. Second port; 203. Third port; 21. Fourth delivery pipe 211. Sixth switch valve; 22. First cleaning pipe; 221. Fifth reversing valve; 222. Fifth switch valve; 23. Second delivery pump; 24. Second cleaning pipe; 241. Seventh switch valve; 30. Third cleaning pipe; 301. Fourth reversing valve; 302. Water delivery pipe; 3021. Sixth reversing valve; 303. Cleaning agent pipe; 304. Eighth switch valve; 31. Third reversing valve; 311. First port; 312. Second port; 313. Third port; 32. Fifth delivery pipe; 33. Fourth cleaning pipe; 40. First material container; 50. Second material container; 60. Liquid level detection device; 601. First liquid level gauge; 602. Second liquid level gauge; 603. Liquid level transmitter; 70. Temperature detection device. Detailed Implementation

[0017] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0020] See Figures 1-3 As shown, this utility model embodiment provides a viscous material conveying device, including a first conveying pipe 10, a first reversing valve 11, a second conveying pipe 12, a third conveying pipe 13, and a first conveying pump 14. The first conveying pipe 10 is used to connect to a first material holding container 40. The first reversing valve 11 is provided with a first interface 111, a second interface 112, a third interface 113, and a fourth interface 114. The first interface 111 is connected to the first conveying pipe 10. The two ends of the second conveying pipe 12 are respectively connected to the second interface 112 and the third interface 113. One end of the third conveying pipe 13 is connected to the fourth interface 114, and the other end of the third conveying pipe 13 is used to connect to a second material holding container 50. The first conveying pump 14 is installed on the second conveying pipe 12.

[0021] The first reversing valve 11 has a first state and a second state. In the first state, the first port 111 is connected to the second port 112, and the third port 113 is connected to the fourth port 114, so that the first conveying pipe 10, the second conveying pipe 12, and the third conveying pipe 13 are connected to form a feeding passage; the material is driven to flow along the feeding passage by the first conveying pump 14 to realize material conveying. In the second state, the second port 112 is connected to the third port 113, so that the first reversing valve 11 is connected to the second conveying pipe 12 to form a circulation loop.

[0022] When the pressure in the feeding passage exceeds the set pressure, the first directional valve 11 switches from the first state to the second state. The first directional valve 11 connects with the second conveying pipe 12 to form a circulation loop, causing the inlet and outlet of the first conveying pump 14 to circulate, thus providing pressure relief protection and preventing material blockage. The first directional valve 11 is connected in the feeding passage. By switching the connected interface, it provides pressure relief protection for the feeding passage, preventing material accumulation in the feeding passage and avoiding the risk of material accumulation caused by the installation of bypass pipes and safety valves.

[0023] See Figure 1 As shown, in some embodiments, the first conveying pipe 10 is provided with a first switching valve 103 to facilitate the control of the opening and closing of the first conveying pipe 10. The second conveying pipe 12 is provided with a second switching valve 121 to facilitate the control of the opening and closing of the second conveying pipe 12, and the third conveying pipe 13 is provided with a third switching valve 133 to facilitate the control of the opening and closing of the third conveying pipe 13.

[0024] In some embodiments, the first directional valve 11 is a type 30 automatic directional valve. When overpressure occurs, the type 30 automatic directional valve can be mechanically opened, functioning as a safety valve. When the pressure exceeds the internal pressure rod pressure of the type 30 automatic directional valve, the material forces the valve open. The type 30 automatic directional valve can also be electrically controlled to open when the pressure exceeds a set value, allowing the material to form a circulation loop through the first directional valve 11, providing overpressure protection for the first conveying pump 14. When the type 30 automatic directional valve is closed, it is in the first state; when it is open, it is in the second state. The first conveying pump 14 is a rotor pump, which is used to convey viscous materials. It has a wide range of applications and can handle high-temperature viscous materials. Its high-temperature resistance ensures the stability of the material and does not damage its structure.

[0025] See Figure 1 As shown, in some embodiments, the viscous material conveying device further includes a pressure detection device 131, which is installed on the third conveying pipe 13 and is used to detect the outlet pressure of the conveyed material. The pressure detection device 131 can be a pressure transmitter. By monitoring the outlet pressure, automatic control of the first reversing valve 11 can be conveniently achieved.

[0026] In some embodiments, the viscous material conveying device further includes a controller, and the pressure detection device 131, the first conveying pump 14, and the first reversing valve 11 are electrically connected to the controller. When the pressure detection device 131 detects that the outlet pressure exceeds a set threshold, the controller controls the first reversing valve 11 to switch from a first state to a second state, so that the first reversing valve 11 is connected to the second conveying pipe 12 to form a circulation loop, thereby providing overpressure protection for the first conveying pump 14.

[0027] See Figure 1 As shown, in some embodiments, the viscous material conveying device further includes a flow detection device 132, installed in the third conveying pipe 13. The flow detection device 132 is electrically connected to the controller, and is located downstream of the pressure detection device 131 to avoid interference from the pressure detection, thus ensuring the accuracy of both pressure and flow detection. The flow detection device 132 is used to detect the pumping flow rate. The flow detection device 132 is a flow meter.

[0028] By monitoring pressure and flow, it is convenient to provide stable and pulse-free flow and pressure protection for the first delivery pump 14, reducing the resistance loss of materials in the pipeline and the material deformation that may be caused by shear force.

[0029] See Figure 1As shown, in some embodiments, the viscous material conveying device further includes a coolant supply device 141 and a coolant detection device 142. The coolant supply device 141 is connected to the first conveying pump 14 and is used to supply coolant to the first conveying pump 14. The coolant is used for the mechanical seal of the first conveying pump 14. The coolant detection device 142 is connected to the first conveying pump 14 and is used to detect whether coolant flows into the first conveying pump 14, so as to facilitate the control of the start and stop of the first conveying pump 14. If the coolant does not flow into the first conveying pump 14 normally, the first conveying pump 14 is stopped, which protects the first conveying pump 14 and prevents dry friction from damaging the mechanical seal or even causing material leakage. The coolant detection device 142 is electrically connected to the controller so that the controller can control the start and stop of the first conveying pump 14 according to the detection signal of the coolant detection device 142.

[0030] See Figure 1 As shown, the coolant supply device 141 includes a coolant supply pipe 1411 and a fourth switching valve 1412 installed on the coolant supply pipe 1411. One end of the coolant supply pipe 1411 is connected to the first delivery pump 14, and the other end is connected to the coolant storage tank. The on / off state of the coolant supply pipe 1411 is controlled by the fourth switching valve 1412. A throttle valve 1413 is also installed on the coolant supply pipe 1411, and the coolant supply amount can be adjusted by regulating the throttle valve 1413.

[0031] See Figure 1 As shown, in some embodiments, the viscous material conveying device further includes a filter 101 installed in the first conveying pipe 10. The filter 101 is used to filter the material to prevent impurities in the material from causing the first conveying pump 14 to jam and affecting its operation.

[0032] See Figure 1 As shown, in some embodiments, the viscous material conveying device further includes a level switch 102 installed in the first conveying pipe 10. The level switch 102 detects whether there is material in the first conveying pipe 10. When the level switch 102 detects that there is no material in the first conveying pipe 10, it controls the first conveying pump 14 to stop, preventing the first conveying pump 14 from running dry and thus protecting the operation of the first conveying pump 14. When the level switch 102 detects that there is material in the first conveying pipe 10, and the coolant detection device 142 detects that coolant is flowing normally into the first conveying pump 14, it controls the first conveying pump 14 to start, ensuring the safe operation of the first conveying pump 14.

[0033] See Figure 1 , Figure 4 and Figure 6As shown, in some embodiments, the viscous material conveying device further includes a second reversing valve 20, a fourth conveying pipe 21, a first cleaning pipe 22, a second conveying pump 23, and a second cleaning pipe 24. The second reversing valve 20 is provided with a first port 201, a second port 202, and a third port 203. The first port 201 is connected to the first conveying pipe 10. The two ends of the fourth conveying pipe 21 are respectively connected to the second port 202 and the first interface 111. One end of the first cleaning pipe 22 is connected to the third port 203, and the other end of the first cleaning pipe 22 is connected to the fourth conveying pipe 21. The second conveying pump 23 is installed on the first cleaning pipe 22. One end of the second cleaning pipe 24 is connected to the third conveying pipe 13, and the other end of the second cleaning pipe 24 is used to connect to the second material container 50.

[0034] The second directional valve 20 has a first feeding state and a first cleaning state. In the first feeding state, the first port 201 and the second port 202 are connected, connecting the first conveying pipe 10, the second directional valve 20, the fourth conveying pipe 21, the second conveying pipe 12, and the third conveying pipe 13 to form a feeding passage, through which the material is pumped by the first conveying pump 14. In the first cleaning state, the first port 201 and the third port 203 are connected, connecting the first conveying pipe 10, the second directional valve 20, the first cleaning pipe 22, the fourth conveying pipe 21, the second conveying pipe 12, and the third conveying pipe 13 to form a first cleaning passage. The first material container 40 holds the cleaning agent, which is pumped by the second conveying pump 23 to circulate in the first cleaning passage, thereby cleaning the first conveying pipe 10, the fourth conveying pipe 21, the second conveying pipe 12, the third conveying pipe 13, and the second material container 50.

[0035] It should be noted that when the second directional valve 20 is in the first cleaning state, the first directional valve 11 also has a first state and a second state. In the first state, the first delivery pipe 10, the first cleaning pipe 22, the fourth delivery pipe 21, the second delivery pipe 12, and the third delivery pipe 13 are connected to form a first cleaning passage. In the second state, the second interface 112 and the third interface 113 are connected, so that the first directional valve 11 and the second delivery pipe 12 are connected to form a circulation loop for pressure relief protection. When the detection system pressure exceeds the set threshold, the first directional valve 11 switches from the first state to the second state.

[0036] The second conveying pump 23 is a centrifugal pump. Using a rotor pump when pumping materials improves pumping efficiency; using a centrifugal pump during cleaning ensures the required rinsing flow rate, improves cleaning effect, and avoids the problem of insufficient pumping flow rate when using a rotor pump, requiring prolonged and repeated pumping. This minimizes production downtime and significantly improves equipment utilization. When cleaning the first cleaning passage, the second conveying pump 23 can also be used in conjunction with the first conveying pump 14 to enhance the cleaning flow rate in the conveying pipe, addressing the risk of material accumulation in the pipes due to insufficient cleaning flow rate in the conveying line when the first conveying pump 14 is used.

[0037] See Figure 1 As shown, in some embodiments, the first cleaning pipe 22 is also provided with a fifth reversing valve 221, which has three ports, two of which are connected to the second delivery pump 23 and the fourth delivery pipe 21 respectively, and the other port is connected to the discharge pipe.

[0038] See Figure 1 As shown, in some embodiments, the first cleaning pipe 22 is provided with a fifth switching valve 222 to facilitate control of the on / off state of the first cleaning pipe 22. The fourth delivery pipe 21 is provided with a sixth switching valve 211, and the connection between the first cleaning pipe 22 and the fourth delivery pipe 21 is located between the sixth switching valve 211 and the first reversing valve 11. The second cleaning pipe 24 is provided with a seventh switching valve 241 to facilitate control of the on / off state of the second cleaning pipe 24. The connection between the second cleaning pipe 24 and the third delivery pipe 13 is located between the fourth interface 114 and the third switching valve 133.

[0039] See Figure 1 , Figure 5 and Figure 7 As shown, in some embodiments, the viscous material conveying device further includes a third cleaning pipe 30, a third reversing valve 31, a fifth conveying pipe 32, and a fourth cleaning pipe 33. One end of the third cleaning pipe 30 is connected to the first conveying pipe 10 or the fourth conveying pipe 21, and the other end of the third cleaning pipe 30 is used to connect to a water source and / or a cleaning agent supply source, which can both come from the workshop. The third reversing valve 31 is provided with a first port 311, a second port 312, and a third port 313. The first port 311 is connected to the third conveying pipe 13, and the connection position of the second cleaning pipe 24 and the third conveying pipe 13 is located between the fourth interface 114 and the first port 311. One end of the fifth conveying pipe 32 is connected to the second port 312, and the other end of the fifth conveying pipe 32 is used to connect to the second material container 50. The fourth cleaning pipe 33 is connected to the third port 313.

[0040] The third directional valve 31 has a second feeding state and a second cleaning state. In the second feeding state, the first port 311 and the second port 312 are connected, connecting the first conveying pipe 10, the fourth conveying pipe 21, the second conveying pipe 12, the third conveying pipe 13, and the fifth conveying pipe 32 to form a feeding passage for convenient feeding. In the second cleaning state, the first port 311 and the third port 313 are connected. When the third cleaning pipe 30 is connected to the first conveying pipe 10, it connects the third cleaning pipe 30, the first conveying pipe 10, the fourth conveying pipe 21, the second conveying pipe 12, the third conveying pipe 13, and the fourth cleaning pipe 33 to form a second cleaning passage. When the third cleaning pipe 30 is connected to the fourth conveying pipe 21, it connects the third cleaning pipe 30, the fourth conveying pipe 21, the second conveying pipe 12, the third conveying pipe 13, and the fourth cleaning pipe 33 to form a second cleaning passage.

[0041] When materials are stored in the first container 40 and the second container 50, cleaning agents or water can be supplied from the workshop through the second cleaning passage to clean the pipeline.

[0042] See Figure 7 As shown, in some embodiments, the viscous material conveying device further includes a fourth reversing valve 301. The fourth reversing valve 301 has three ports: one port connects to the third cleaning pipe 30; one port connects to the water supply pipe 302, which connects to a water source; and the other port connects to the cleaning agent pipe 303, which connects to a cleaning agent supply source. The fourth reversing valve 301 allows the third cleaning pipe 30 to be connected to either the water supply pipe 302 or the cleaning agent pipe 303. When the third cleaning pipe 30 is connected to the cleaning agent pipe 303, cleaning agent is supplied to the second cleaning passage. When the third cleaning pipe 30 is connected to the water supply pipe 302, clean water is supplied to the second cleaning passage. In use, the cleaning agent can be supplied to the second cleaning passage first, followed by clean water, to avoid residual cleaning agent in the pipes. The cleaning agent can be disinfectant. The water supply pipeline 302 can be equipped with a sixth directional valve 3021. The sixth directional valve 3021 has three ports, one of which is connected to the fourth directional valve 301, one of which is connected to the water source, and the other of which can be connected to an external discharge pipe to discharge water to the ground.

[0043] It should be noted that when the third directional valve 31 is in the second cleaning state, the first directional valve 11 also has a first state and a second state. When the detection system pressure exceeds the set threshold, the first directional valve 11 switches from the first state to the second state for pressure relief protection.

[0044] See Figure 7 As shown, in some embodiments, the third cleaning pipe 30 is provided with an eighth switching valve 304 to facilitate the control of the opening and closing of the third cleaning pipe 30.

[0045] The second reversing valve 20, the third reversing valve 31, the fourth reversing valve 301, the fifth reversing valve 221, and the sixth reversing valve 3021 are all automatic reversing valves.

[0046] This utility model also provides a viscous material conveying system, including a first material container 40, a second material container 50, and the aforementioned viscous material conveying device; the first material container 40 is connected to a first conveying pipe 10; the second material container 50 is connected to a third conveying pipe 13. The viscous material is conveyed from the first material container 40 to the second material container 50 via the viscous material conveying device. Both the first material container 40 and the second material container 50 are storage tanks.

[0047] See Figure 1 As shown, the viscous material conveying system also includes a liquid level detection device 60, which is used to detect the liquid level. Both the first material container 40 and the second material container 50 are equipped with the liquid level detection device 60.

[0048] See Figure 1 As shown, the liquid level detection device 60 includes a first liquid level gauge 601 and a second liquid level gauge 602, which are arranged vertically at intervals. The first liquid level gauge 601 is used to detect the high liquid level of the first material container 40 or the second material container 50, and the second liquid level gauge 602 is used to detect the low liquid level of the first material container 40 or the second material container 50. When the first liquid level gauge 601 of the second material container 50 detects a signal, it indicates that the second material container 50 is full, and no more material is supplied, and the system stops operating. When the second liquid level gauge 602 of the first material container 40 detects a signal, it indicates that the first material container 40 is empty, and no material is available, and the system stops operating.

[0049] See Figure 1 As shown, the liquid level detection device 60 also includes a liquid level transmitter 603, which continuously monitors the liquid level of the first material container 40 or the second material container 50 to intuitively display the liquid level value of the first material container 40 or the second material container 50.

[0050] See Figure 1 As shown, the viscous material conveying system also includes a temperature detection device 70 for detecting temperature. The first material container 40 is equipped with the temperature detection device 70, or the second material container 50 is equipped with the temperature detection device 70, or both the first material container 40 and the second material container 50 are equipped with the temperature detection device 70. The temperature detection device 70 is a temperature transmitter. When the temperature detection device 70 detects that the temperature exceeds a set threshold, the system stops operating to provide high-temperature protection.

[0051] The liquid level detection device 60 and the temperature detection device 70 are electrically connected to the controller to facilitate automatic control of the system operation.

[0052] The working process of this utility model is as follows: See Figure 1 As shown, the material pumping process is as follows: When material is discharged from the first holding container 40 to the second holding container 50, the first switching valve 103, the second reversing valve 20, the sixth switching valve 211, the second switching valve 121, the third switching valve 133, and the fifth reversing valve 221 are opened. Then, the fourth switching valve 1412 is opened, and the flow rate of the throttle valve 1413 is adjusted appropriately. When the level switch 102 and the coolant detection device 142 detect a signal, the first transfer pump 14 is started, realizing the pumping of material from the first holding container 40 to the second holding container 50. When the pressure exceeds the set threshold, the first reversing valve 11 switches from the first state to the second state, causing a backflow and pressure relief in the system, thus protecting the system.

[0053] See Figure 6 As shown, the system cleaning process is as follows: The first container 40 is filled with cleaning agent. The first switch valve 103, the fifth reversing valve 221, the fifth switch valve 222, the second switch valve 121, and the seventh switch valve 241 are opened. When the liquid level switch 102 detects a signal, the second delivery pump 23 starts. At this time, the first delivery pump 14 does not start. By controlling the key parameters of pipeline flow and pressure during the cleaning process, the cleaning pressure and flow rate are ensured to meet the process indicators, eliminating the quality risks caused by inadequate cleaning and reducing the cycle cleaning time.

[0054] See Figure 7 As shown, the discharge pipe cleaning process is as follows: When the first and second material containers 40 have temporary material storage, the process requires cleaning the discharge pipe. Cleaning agent is supplied from the workshop, and the fourth directional valve 301, the eighth switch valve 304, the second switch valve 121, and the third switch valve 133 are opened. The third directional valve 31 switches from the second feeding state to the second cleaning state, connecting the second cleaning passage. The pipe flow and pressure are monitored simultaneously to clean the pipe. After the disinfectant cleaning is completed, the fourth directional valve 301 is closed, connecting the water supply pipe 302 to the third cleaning pipe 30. Clean water from the workshop is used to flush the pipe, ensuring that there is no cleaning agent residue in the discharge pipe, thus achieving the cleaning effect.

[0055] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A viscous material conveying device, characterized in that, include: The first conveying pipe (10) is used to connect to the first material container (40); The first reversing valve (11) is provided with a first interface (111), a second interface (112), a third interface (113) and a fourth interface (114), and the first interface (111) is connected to the first delivery pipe (10). The second delivery pipe (12) is connected at both ends to the second interface (112) and the third interface (113). The third conveying pipe (13) is connected at one end to the fourth interface (114) and at the other end to the second material container (50). The first delivery pump (14) is installed on the second delivery pipe (12); The first reversing valve (11) has a first state and a second state. In the first state, the first interface (111) is connected to the second interface (112), and the third interface (113) is connected to the fourth interface (114) so ​​that the first conveying pipe (10), the second conveying pipe (12) and the third conveying pipe (13) are connected to form a feeding passage. In the second state, the second interface (112) is connected to the third interface (113) so that the first reversing valve (11) is connected to the second delivery pipe (12) to form a circulation loop.

2. The viscous material conveying device according to claim 1, characterized in that, Also includes: The second reversing valve (20) is provided with a first port (201), a second port (202) and a third port (203), and the first port (201) is connected to the first delivery pipe (10). The fourth delivery pipe (21) is connected at both ends to the second port (202) and the first interface (111), respectively. The first cleaning tube (22) is connected at one end to the third port (203) and at the other end to the fourth delivery tube (21). The second delivery pump (23) is installed on the first cleaning pipe (22); The second cleaning pipe (24) is connected at one end to the third conveying pipe (13) and at the other end to the second material container (50). The second reversing valve (20) has a first feeding state and a first cleaning state. In the first feeding state, the first port (201) and the second port (202) are connected; in the first cleaning state, the first port (201) and the third port (203) are connected.

3. The viscous material conveying device according to claim 2, characterized in that, Also includes: The third cleaning pipe (30) is connected at one end to the first delivery pipe (10) or the fourth delivery pipe (21), and at the other end to a water source and / or a cleaning agent supply source. The third reversing valve (31) is provided with a first port (311), a second port (312) and a third port (313). The first port (311) is connected to the third delivery pipe (13), and the connection position of the second cleaning pipe (24) and the third delivery pipe (13) is located between the fourth interface (114) and the first port (311). The fifth conveying pipe (32) is connected at one end to the second port (312) and at the other end to the second material container (50). The fourth cleaning tube (33) is connected to the third port (313); The third reversing valve (31) has a second feeding state and a second cleaning state. In the second feeding state, the first port (311) is connected to the second port (312); in the second cleaning state, the first port (311) is connected to the third port (313).

4. The viscous material conveying device according to claim 1, characterized in that, Also includes: A pressure detection device (131) is installed on the third delivery pipe (13). The controller, the pressure detection device (131), the first delivery pump (14) and the first reversing valve (11) are electrically connected to the controller respectively.

5. The viscous material conveying device according to claim 4, characterized in that, It also includes a flow detection device (132) installed on the third delivery pipe (13), the flow detection device (132) being electrically connected to the controller, and the flow detection device (132) being located downstream of the pressure detection device (131).

6. The viscous material conveying device according to claim 4, characterized in that, It also includes a coolant supply device (141) and a coolant detection device (142). The coolant supply device (141) is connected to the first delivery pump (14) and is used to supply coolant to the first delivery pump (14). The coolant detection device (142) is connected to the first delivery pump (14) and is used to detect whether coolant flows into the first delivery pump (14).

7. The viscous material conveying device according to claim 1, characterized in that, It also includes a filter (101) installed in the first delivery pipe (10), the filter (101) being used to filter materials.

8. The viscous material conveying device according to claim 1, characterized in that, It also includes a level switch (102) installed on the first delivery pipe (10).

9. A viscous material conveying system, characterized in that, include: The viscous material conveying device as described in any one of claims 1-8; The first material container (40) is connected to the first conveying pipe (10); The second material container (50) is connected to the third conveying pipe (13).

10. The viscous material conveying system according to claim 9, characterized in that, Also includes: A liquid level detection device (60) is provided in the first material container (40) and the second material container (50); A temperature detection device (70) is provided in the first material container (40) and the second material container (50).

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