Automatic feeding device

Abstract

The utility model discloses an automatic feeding device. The automatic feeding device comprises a storage tank, a feeding assembly, at least two reactors and at least two feed distribution assemblies, the feeding assembly comprises a feeding pipe communicated with the bottom of the storage tank and a feeding pump arranged on the feeding pipe; one end of the feeding distribution assembly is communicated with the feeding pipe, and the other end is communicated with the reactor; and a material storage and discharge valve is arranged on the feeding pipe and between the feeding pump and the feeding and distributing assembly. According to the technical scheme of the utility model, through the storage tank, the feeding assembly communicated with the storage tank, the at least two reactors and the at least two feeding distribution assemblies of which the two ends are respectively communicated with the reactors and the feeding assembly, one storage tank can carry out feeding operation on a plurality of reactors; the utilization rate of equipment such as the storage tank, the feeding pipe and the feeding pump is increased, the cleaning workload caused by project switching is reduced, and the working intensity of workers is relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to an automatic feeding device. Background Art

[0002] In the industrial production process, the materials in the storage tank are transported to the reactor, usually through a feeding pump and a feeding pipe. However, when the project is changed, the feeding pipe needs to be switched, and the utilization rate of the storage tank, feeding pipe and feeding pump is low. Utility Model Content

[0003] The main purpose of the utility model is to propose an automatic feeding device, aiming to improve the utilization rate of equipment such as storage tanks, feeding pipes and feeding pumps, reduce the cleaning workload caused by project switching, and reduce the work intensity of staff.

[0004] In order to achieve the above-mentioned purpose, the automatic feeding device proposed by the utility model comprises:

[0005] Storage tanks;

[0006] A feeding assembly, the feeding assembly comprising a feeding pipe connected to the bottom of the storage tank and a feeding pump arranged on the feeding pipe;

[0007] at least two reactors; and

[0008] At least two feed distribution components are provided, one end of the feed distribution component is connected to the feed pipe, and the other end is connected to the reactor; a storage discharge valve is provided on the feed pipe and between the feed pump and the feed distribution component.

[0009] Optionally, a feed distribution assembly includes: a distribution feed pipe and a distribution feed valve arranged on the distribution feed pipe, and both ends of the distribution feed pipe are connected to the feeding pipe and the reactor respectively.

[0010] Optionally, a feed valve is further provided on the distribution feed pipe and on one side close to the reactor;

[0011] A feeding valve is also arranged on the feeding pipe and between the feeding pump and the storage tank.

[0012] Optionally, a feed distribution assembly further includes: a nitrogen purge pipe disposed on the distribution feed pipe and between the distribution feed valve and the reactor, wherein a nitrogen valve is disposed on the nitrogen purge pipe and is connected to a nitrogen source.

[0013] Optionally, a weighing module is provided at the bottom of the storage tank.

[0014] Optionally, the top of the storage tank is connected to a storage tank nitrogen pipe, and a storage tank nitrogen valve is arranged on the storage tank nitrogen pipe.

[0015] Optionally, the storage tank is connected to a storage tank pressure transmitter.

[0016] Optionally, the top of the storage tank is connected to a pressure balance pipe, and a pressure balance valve is provided on the pressure balance pipe; the other end of the pressure balance pipe is connected to the feeding pipe, and the position where the other end of the pressure balance pipe is connected to the feeding pipe is located between the feeding pump and the storage material discharge valve.

[0017] Optionally, the top of the reactor is connected to an air lift pipe, and the air lift pipe is provided with a reaction pressure transmitter, an air lift valve and a glass tube sight glass.

[0018] Optionally, the other end of the gas lift pipe is connected to a gas-liquid separator, the upper end of the gas-liquid separator is connected to a drain pipe, and a drain valve is provided on the drain pipe.

[0019] The technical solution of the utility model includes a storage tank, a feeding assembly connected to the storage tank, at least two reactors, and at least two feed distribution assemblies whose two ends are respectively connected to the reactors and the feeding assembly. One storage tank can perform feeding operations to multiple reactors, thereby improving the utilization rate of equipment such as storage tanks, feeding pipes and feeding pumps, reducing the cleaning workload caused by project switching, and alleviating the work intensity of staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the structure of an embodiment of the automatic feeding device of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the material storage tank of the automatic feeding device of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the reactor of the automatic feeding device of the utility model;

[0024] Figure 4 This is a structural schematic diagram of the reactor temperature control component of the automatic feeding device of the utility model.

[0025] The main component symbols are described as follows:

[0026] 1. Storage tank; 11. Weighing module; 12. Storage tank nitrogen pipe; 121. Storage tank nitrogen valve; 13. Storage tank pressure transmitter; 14. Air pressure balance pipe; 141. Air pressure balance valve; 2. Feeding assembly; 21. Feeding pipe; 211. Storage material discharge valve; 212. Feeding valve; 22. Feeding pump; 3. Reactor; 31. Reaction temperature meter; 32. Jacket; 33. Agitator; 4. Feed distribution assembly; 41. Distribution feed pipe; 42. Distribution feed valve; 43. Feed valve; 44. Purge nitrogen pipe; 441. Nitrogen valve; 5. Gas lift pipe; 51. Reaction pressure transmitter; 52. Gas lift valve; 53. Glass tube sight glass; 6. Gas-liquid separator; 7. Drain pipe; 71. Drain valve.

[0027] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings.

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0032] The utility model provides an automatic feeding device.

[0033] In the embodiment of the present utility model, Figures 1 to 4 As shown, the automatic feeding device comprises: a storage tank 1, a feeding assembly 2, at least two reactors 3 and at least two feed distribution assemblies 4; the feeding assembly comprises a feeding pipe 21 connected to the bottom of the storage tank 1 and a feeding pump 22 arranged on the feeding pipe 21; one end of the feed distribution assembly 4 is connected to the feeding pipe 21, and the other end is connected to the reactor 3; a storage material discharge valve 211 is arranged on the feeding pipe 21 and between the feeding pump 22 and the feed distribution assembly 4. The number of reactors 3 and feed distribution assemblies 4 is the same.

[0034] The technical solution of the utility model is through a storage tank 1, a feeding assembly 2 connected to the storage tank, at least two reactors 3 and at least two feed distribution assemblies 4 whose two ends are respectively connected to the reactors 3 and the feeding assembly 2. One storage tank 1 can perform feeding operations to multiple reactors 3, thereby improving the utilization rate of equipment such as storage tanks, feeding pipes and feeding pumps, reducing the cleaning workload caused by project switching, and alleviating the work intensity of staff.

[0035] Specifically, in order to better realize the distribution of materials, a feed distribution component 4 includes: a distribution feed pipe 41 and a distribution feed valve 42 arranged on the distribution feed pipe 41, and the two ends of the distribution feed pipe 41 are respectively connected to the feed pipe 21 and the reactor 3. When there are two feed distribution components 4 and two reactors 3, the feed pipe 21 and the distribution feed pipe 41 are connected through a three-way pipe. When there are three feed distribution components 4 and three reactors 3, the feed pipe 21 and the distribution feed pipe 41 are connected through a four-way pipe. When there are more than four feed distribution components 4 and two reactors 3, the feed pipe 21 and the distribution feed pipe 41 are connected through pipelines of multiple passages.

[0036] Specifically, the automatic feeding device further includes a controller, a reactor temperature control component 8, and a reaction temperature meter 31 for measuring the temperature in the reactor 3; the reactor temperature control component 8 is used to control the temperature of the reactor 3; the reactor temperature control component 8 and the reaction temperature meter 31 are respectively connected to the controller for communication. The temperature of the reactor 3 can be controlled by the reactor temperature control component 8 and the reaction temperature meter 31.

[0037] Specifically, in order to control the speed of material transfer according to the temperature in the reactor 3, a feed valve 43 is provided on the distribution feed pipe 41 and located on one side of the upper end of the reactor 3; the feed valve 43 is connected to the controller for communication. The opening and closing degree of the feed valve 43 and the drain valve 71 can be adjusted according to the real-time temperature in the reactor 3 detected by the reaction temperature meter 31, so that the reaction temperature meter 31 is linked with the feed valve 43 and the drain valve 71. The reaction temperature meter 31 is linked with the feed valve 43 and the drain valve 71 to control the size of the feed flow according to the temperature in the reactor 3.

[0038] Specifically, in order to control the material flow in the storage tank 1 , a feeding valve 212 is further provided on the feeding pipe 21 and between the feeding pump 22 and the storage tank 1 .

[0039] Specifically, in order to purge the distribution feed pipe 41 after the feeding is completed and reduce the materials stagnant in the distribution feed pipe 41, a feed distribution assembly 4 also includes: a purge nitrogen pipe 44 arranged on the distribution feed pipe 41 and arranged between the distribution feed valve 42 and the reactor 3, and a nitrogen valve 441 is arranged on the purge nitrogen pipe 44. The purge nitrogen pipe 44 is connected to the nitrogen source. The feed valve 43 is connected to the controller for communication.

[0040] Specifically, in order to more accurately determine the weight of the material discharged from the storage tank, a weighing module 11 is provided at the bottom of the storage tank 1. By replacing the liquid level meter with the weighing module 11, the weight of the material discharged can be quantitatively set during the feeding operation, and the accuracy is more precise.

[0041] Specifically, in order to improve the efficiency of conveying the material in the storage tank 1, the top of the storage tank 1 is connected with a storage tank nitrogen pipe 12, and a storage tank nitrogen valve 121 is provided on the storage tank nitrogen pipe 12. The storage tank nitrogen pipe 12 is connected to a nitrogen source. The nitrogen can be introduced into the storage tank 1 by opening the storage tank nitrogen valve 121, and the pressurized nitrogen pushes the material to flow into the reactor 3.

[0042] Specifically, in order to detect the pressure in the storage tank 1 , the storage tank 1 is connected to a storage tank pressure transmitter 13 .

[0043] Specifically, in order to balance the pressure in the feeding pipe 21 and the storage tank 1, the top of the storage tank 1 is connected to a pressure balance pipe 14, and a pressure balance valve 141 is provided on the pressure balance pipe 14; the other end of the pressure balance pipe 14 is connected to the feeding pipe 21, and the position where the other end of the pressure balance pipe 14 is connected to the feeding pipe 21 is located between the feeding pump 22 and the storage material discharge valve 211.

[0044] Specifically, in order to adjust the pressure in the reactor 3 , the top of the reactor 3 is connected with an air lift pipe 5 , on which a reaction pressure transmitter 51 , an air lift valve 52 and a glass tube sight glass 53 are provided.

[0045] Specifically, in order to recover substances from the steam of the reactor 3, the other end of the gas lift pipe 5 is connected to a gas-liquid separator 6, the upper end of the gas-liquid separator 6 is connected to an exhaust pipe 7, and an exhaust valve 71 is provided on the exhaust pipe 7. By opening and closing the exhaust valve 71 provided on the exhaust pipe 7, the function of sealing the reactor 3 and reducing the pressure in the reactor 3 can be achieved, thereby improving the feeding efficiency of the automatic feeding device.

[0046] Specifically, in order to further realize the temperature control of the reactor 3; the reactor 3 also includes a jacket 32 ​​and an agitator 33; the reactor temperature control assembly 8 includes: a jacket liquid inlet pipe 81, a jacket liquid outlet pipe 82, a heat source pipe 83 and a cold source pipe 84; the jacket liquid inlet pipe 81 is connected to the jacket 32, and the jacket liquid inlet pipe 81 is provided with a jacket liquid inlet pump 811 and a jacket temperature meter 812; the jacket temperature meter 812 is located between the jacket liquid inlet pump 811 and the jacket 32; the jacket liquid outlet pipe 82 is connected to the jacket 32, and the jacket liquid outlet pipe 82 is provided with a There is a liquid outlet regulating valve 821; a first control valve 831 is provided on the heat source pipe 83, and the heat source pipe 83 is connected to the heat medium source; a second control valve 841 is provided on the cold source pipe 84, and the cold source pipe 84 is connected to the cold medium source; both the heat source pipe 83 and the cold source pipe 84 are connected to the jacket liquid inlet pipe 81; the controller is communicated with the second agitator 26, the liquid outlet regulating valve 821, the jacket temperature meter 812, the first control valve 831, the second control valve 841 and the feed valve 43; a jacket liquid inlet valve 813 is also provided on the jacket liquid inlet pipe 81.

[0047] Specifically, in order to further realize the temperature control of the reactor 3; the reactor temperature control component 8 also includes: a hot reflux pipe 85, a cold reflux pipe 86, a normal temperature source pipe 87, a normal temperature reflux pipe 88, a circulation pipe 89 and a direct connection pipe 895; a third control valve 851 is provided on the hot reflux pipe 85, and the hot reflux pipe 85 is connected to the hot reflux tank; a fourth control valve 861 is provided on the cold reflux pipe 86, and the cold reflux pipe 86 is connected to the cold reflux tank; a fifth control valve 871 is provided on the normal temperature source pipe 87, and the normal temperature source pipe 87 is connected to the normal temperature medium source; a sixth control valve 881 is provided on the normal temperature reflux pipe 88, and the normal temperature reflux pipe 88 is connected to the normal temperature reflux tank; the hot reflux pipe 85 and the cold reflux pipe 86 are both connected to the jacket liquid outlet pipe 82; the third control valve 851 and the fourth control valve 861 are both connected to the controller in communication; the normal temperature source pipe 87 is connected to the jacket liquid inlet pipe 81, and the normal temperature reflux pipe 88 is connected to the normal temperature reflux tank; The flow pipe 88 is connected to the jacket liquid outlet pipe 82; the fifth control valve 871 and the sixth control valve 881 are both connected to the controller for communication; a one-way valve 891 is provided on the circulation pipe 89, and the two ends of the circulation pipe 89 are respectively connected to the jacket liquid inlet pipe 81 and the jacket liquid outlet pipe 82, and the communication position of the circulation pipe 89 and the jacket liquid inlet pipe 81 is located between the jacket liquid inlet valve 813 and the first control valve 831; the communication position of the circulation pipe 89 and the jacket liquid outlet pipe 82 is located between the liquid outlet regulating valve 821 and the jacket 32; a direct valve 896 is provided on the direct connection pipe 895, one end of the direct connection pipe 895 is connected to the circulation pipe 89, and the other end is connected to the jacket liquid inlet pipe 81, and the communication position of the direct connection pipe 895 and the circulation pipe 89 is located between the jacket liquid inlet pipe 81 and the one-way valve 891, and the communication position of the direct connection pipe 895 and the jacket liquid inlet pipe 81 is located between the jacket temperature meter 812 and the jacket liquid inlet pump 811.

[0048] The temperature control principle of the reactor 3 of the automatic feeding device of the utility model is as follows: when the reaction temperature meter 31 detects that the reaction temperature in the reactor 3 is higher than the preset temperature, the controller controls the first control valve 831, the third control valve 851, the fifth control valve 871, the sixth control valve 881 and the direct-connection valve 896 to be closed, and the jacket liquid inlet pump 811 is started. The controller controls the liquid outlet regulating valve 821, the second control valve 841 on the cold source pipe 84 and the fourth control valve 861 on the cold reflux pipe 86 to be opened, and the cold medium in the cold medium source is passed into the jacket 32 ​​to cool the reactor 3. When the reaction temperature meter 31 detects that the reaction temperature in the reactor 3 is lower than the preset temperature, the controller controls the second control valve 841, the fourth control valve 861, the fifth control valve 871, the sixth control valve 881 and the direct-connection valve 896 to close, and starts the jacket liquid inlet pump 811. The controller controls the liquid outlet regulating valve 821, the first control valve 831 on the heat source pipe 83 and the third control valve 851 on the heat reflux pipe 85 to open, and the heat medium in the heat medium source is passed into the jacket 32 ​​to heat up the reactor 3. When the reaction temperature meter 31 detects that the reaction temperature in the reactor 3 is within the normal temperature range, the controller controls the first control valve 831, the second control valve 841, the fifth control valve 871, the third control valve 851, the fourth control valve 861, the sixth control valve 881, the liquid outlet regulating valve 821 and the direct connection valve 896 to close, and starts the jacket liquid inlet pump 811. Through the operation of the jacket liquid inlet pump 811, the medium circulates between the jacket 32, the jacket liquid outlet pipe 82, the circulation pipe 89 and the jacket liquid inlet pipe 81, so as to control the temperature of the jacket 32. When the jacket liquid inlet pump 811 fails, the jacket liquid inlet pump 811 can be repaired and replaced by closing the jacket liquid inlet valve 813 and the valve between the jacket liquid inlet pump 811 and the direct connection pipe 895, and opening the direct connection valve 896. The direct connection pipe 895 is a bypass pipeline and is only used in abnormal situations. Similarly, the direct-connected valve 896 is in a closed state when the jacket inlet pump 811 operates normally. The jacket inlet valve 813 is normally open, and when the jacket inlet pump 811 starts temperature control, the pump starts. The first control valve 831 and the third control valve 851, the second control valve 841 and the fourth control valve 861, and the fifth control valve 871 and the sixth control valve 881 are three groups of valves. According to different temperature setting values, the valve groups that are not moved are started, and the inlet and return are opened at the same time. The amount of medium entering the jacket is controlled by the liquid outlet regulating valve 821, and mixed with the original medium in the jacket to achieve the purpose of precise temperature control. The outlet temperature (jacket temperature or external temperature) of the reactor jacket circulation pump (jacket inlet pump 811) is used to adjust the opening (0-100%) of the liquid outlet regulating valve 821, thereby controlling the amount of ethylene glycol added to the jacket to achieve the purpose of temperature control.

[0049] The control logic and principle of the automatic feeding device of the utility model: before feeding the reactor 3, the feeding weight of the storage tank is determined according to the weighing module 11, and the feeding program is started. Then, the feeding valve 43 of the reactor 3 is opened, the distribution feeding valve 42 is opened, and the feeding pump 22 is started. Then the feeding valve is opened, and the material in the storage tank 1 is automatically fed into the reactor 3; the storage tank pressure transmitter 13 of the storage tank 1 is interlocked with the storage tank nitrogen valve 121 of the storage tank 1, that is, when the pressure in the storage tank 1 is reduced to a certain value, the storage tank nitrogen valve 121 is opened; when the pressure in the storage tank rises to a certain value, the storage tank nitrogen valve 121 is closed. The reaction pressure transmitter 51 of the reactor 3 is interlocked with the drain valve 71 of the reactor 3, that is, when the pressure of the reactor 3 is reduced to a certain value, the drain valve 71 is closed; when the pressure in the reactor 3 rises to a certain value, the drain valve 71 is opened. When the weight change value of the weighing module 11 reaches the set value, that is, the material delivered to the reactor 3 reaches a certain value, the storage discharge valve 211 and the distribution feed valve 42 are closed, and the feed pump 22 stops running. Then, the nitrogen valve 441 is opened to intermittently purge the distribution feed pipe 41; after the purge of the distribution feed pipe 41 is completed, the nitrogen valve 441 is closed, and the feed valve 43 of the reactor 3 is closed.

[0050] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the concept of the utility model, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. An automatic feeding device, characterized in that: include: Storage tank (1); A feeding assembly (2), the feeding assembly comprising a feeding pipe (21) connected to the bottom of the storage tank (1) and a feeding pump (22) arranged on the feeding pipe (21); at least two reactors (3); and At least two feed distribution components (4), one end of each feed distribution component (4) is connected to the feed pipe (21), and the other end is connected to the reactor (3); a storage discharge valve (211) is provided on the feed pipe (21) and between the feed pump (22) and the feed distribution component (4).

2. The automatic feeding device according to claim 1, characterized in that: One of the feed distribution components (4) comprises: a distribution feed pipe (41) and a distribution feed valve (42) arranged on the distribution feed pipe (41), and both ends of the distribution feed pipe (41) are respectively connected to the feed pipe (21) and the reactor (3).

3. The automatic feeding device according to claim 2, characterized in that: A feed valve (43) is also provided on the distribution feed pipe (41) and on a side close to the reactor (3); A feeding valve (212) is also provided on the feeding pipe (21) and between the feeding pump (22) and the storage tank (1).

4. The automatic feeding device according to claim 3, characterized in that: One of the feed distribution components (4) further comprises: a nitrogen purge pipe (44) arranged on the distribution feed pipe (41) and between the distribution feed valve (42) and the reactor (3); a nitrogen valve (441) is arranged on the nitrogen purge pipe (44) and is connected to a nitrogen source.

5. The automatic feeding device according to any one of claims 1 to 4, characterized in that: A weighing module (11) is provided at the bottom of the storage tank (1).

6. The automatic feeding device according to claim 5, characterized in that: The top of the material storage tank (1) is connected to a storage tank nitrogen pipe (12), and a storage tank nitrogen valve (121) is provided on the storage tank nitrogen pipe (12).

7. The automatic feeding device according to claim 6, characterized in that: The material storage tank (1) is connected to a storage tank pressure transmitter (13).

8. The automatic feeding device according to claim 7, characterized in that: The top of the storage tank (1) is connected to a pressure balance pipe (14), and a pressure balance valve (141) is arranged on the pressure balance pipe (14); the other end of the pressure balance pipe (14) is connected to the feeding pipe (21), and the position where the other end of the pressure balance pipe (14) is connected to the feeding pipe (21) is located between the feeding pump (22) and the storage material discharge valve (211).

9. The automatic feeding device according to any one of claims 1 to 4, characterized in that: The top of the reactor (3) is connected to an air lift pipe (5), and the air lift pipe (5) is provided with a reaction pressure transmitter (51), an air lift valve (52) and a glass tube sight glass (53).

10. The automatic feeding device according to claim 9, characterized in that: The other end of the gas lift pipe (5) is connected to a gas-liquid separator (6), the upper end of the gas-liquid separator (6) is connected to a drain pipe (7), and a drain valve (71) is provided on the drain pipe (7).

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