Dimethoxydimethyl ether production methylal feeding device

Abstract

The utility model discloses a dimethoxydimethyl ether production dimethoxymethane putting device, which comprises a dimethoxymethane liquid tank, a liquid fixing tank, a liquid separating tank and a processor, the bottom end of the dimethoxymethane liquid tank is connected with a three-way pipe through a flange, an upper electric valve is connected between the liquid fixing tank and the liquid separating tank through a flange, and a lower electric valve is connected with the processor through a flange. The bottom end of the liquid separation tank is connected with a lower electric valve through a flange, the top end of the liquid fixing tank and the top end of the liquid separation tank are connected with radar liquid level meters through flanges, probes of the two radar liquid level meters are located in the liquid fixing tank and the liquid separation tank respectively, and the top of the methylal liquid tank is fixedly connected with an upper supporting frame. A methylal adjusting assembly is arranged on the top of the upper supporting frame and comprises a main pump body. Through the arrangement of the main pump body, the upper pump body, the lower pump body and the radar liquid level meter, methylal can be conveniently added or taken out, so that too much or too little methylal liquid is prevented from being put, and the accuracy of methylal putting is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of methylal feeding, in particular to a methylal feeding device for producing polyoxymethylene dimethyl ether. Background Art

[0002] At present, in the production process of polyoxyethylene dimethyl ether, methylal, as an important raw material, is usually added to the reaction system by a dosing device through a precise metering system.

[0003] However, when the existing methylal dosing device is in use, the methylal in the methylal liquid tank is directly dosed. If the amount of methylal dosed is too little or too much, it is inconvenient to add or remove the methylal, resulting in poor accuracy in methylal dosing. Therefore, in order to advance the industry's technology, better realize the function of precise methylal dosing, and improve the competitiveness of core technologies, the present application proposes a new implementation scheme of the dosing structure of the methylal dosing device for producing polyoxyethylene dimethyl ether, which is different from the prior art. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that the existing methylal feeding device directly feeds methylal from a methylal liquid tank when in use. If the amount of methylal fed is too little or too much, it is inconvenient to add or remove the methylal, resulting in poor accuracy of methylal feeding. A methylal feeding device for producing polyoxymethylene dimethyl ether is proposed.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A methylal dosing device for producing polyoxymethylene dimethyl ether comprises a methylal liquid tank, a fixed liquid tank, a liquid separator and a processor, the bottom end of the methylal liquid tank is connected to a tee pipe via a flange, an upper electric valve is connected between the fixed liquid tank and the liquid separator via a flange, the bottom end of the liquid separator is connected to a lower electric valve via a flange, the top of the fixed liquid tank and the top of the liquid separator are both connected to radar level gauges via flanges, the probes of the two radar level gauges are respectively located in the fixed liquid tank and the liquid separator, the top of the methylal liquid tank is fixedly connected to an upper support frame, the top of the upper support frame is provided with a methylal adjustment assembly, the methylal adjustment assembly comprises a main pump body, the main pump body is fixed to the top of the upper support frame via bolts, the liquid inlet end of the main pump body is inserted into the It is connected to a main liquid inlet pipe, the other end of the main liquid inlet pipe is connected to one end of the tee through a flange, the liquid outlet end of the main pump body is connected to the main liquid outlet pipe, and the other end of the main liquid outlet pipe is connected to the top of the fixed liquid tank through a flange, one side outer wall of the fixed liquid tank is fixedly connected to the upper pump body, the liquid inlet end of the upper pump body is connected to the upper liquid inlet pipe, the other end of the upper liquid inlet pipe is communicated with the fixed liquid tank, the liquid outlet end of the upper pump body is connected to the upper liquid outlet pipe, and the other end of the upper liquid outlet pipe is communicated with the methylal liquid tank, one side outer wall of the liquid separator is fixedly connected to the lower pump body, the liquid inlet end of the lower pump body is connected to the lower liquid inlet pipe, the other end of the lower liquid inlet pipe is communicated with the liquid separator, the liquid outlet end of the lower pump body is connected to the lower liquid outlet pipe, and the other end of the lower liquid outlet pipe is communicated with the fixed liquid tank.

[0007] Furthermore, the bottom end of the three-way pipe is connected to a lower sealing cover through a flange.

[0008] Furthermore, the bottom end of the lower electric valve is connected to a liquid outlet elbow via a flange.

[0009] Furthermore, a vibration motor is fixedly connected to an outer wall of one side of the liquid separation tank.

[0010] Furthermore, a side liquid inlet pipe is fixedly connected to one side of the methylal liquid tank, and a side sealing cover is threadedly sleeved on the other end of the side liquid inlet pipe.

[0011] Furthermore, a lower support frame is fixedly connected to the outer wall of the bottom end of the methylal liquid tank.

[0012] Furthermore, the processor is electrically connected to the main pump body, the upper pump body, the lower pump body, the upper electric valve, the lower electric valve, the radar level gauge and the vibration motor.

[0013] The beneficial effects of the utility model are:

[0014] 1. The arrangement of the main pump body, the upper pump body, the lower pump body and the radar level gauge can facilitate the addition or removal of methylal, thereby avoiding excessive or insufficient addition of methylal liquid and improving the accuracy of methylal addition.

[0015] 2. The vibration motor drives the separation tank to vibrate, thereby preventing the methylal liquid from adhering to the inner wall of the separation tank, so that the methylal liquid can be completely discharged to avoid waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a methylal feeding device for producing polyoxymethylene dimethyl ether proposed in the present invention;

[0017] Figure 2 This is a schematic diagram of the right part of the three-dimensional structure of a methylal feeding device for producing polyoxymethylene dimethyl ether proposed in the present invention;

[0018] Figure 3 This is a schematic diagram of the left part of the three-dimensional structure of a methylal feeding device for producing polyoxymethylene dimethyl ether proposed by the utility model.

[0019] In the figure: 1. Methylal liquid tank; 101. T-piece; 102. Lower sealing cover; 2. Fixed liquid tank; 3. Separating liquid tank; 4. Methylal adjustment assembly; 401. Main pump body; 402. Main liquid inlet pipe; 403. Main liquid outlet pipe; 404. Upper pump body; 405. Upper liquid inlet pipe; 406. Upper liquid outlet pipe; 407. Lower pump body; 408. Lower liquid inlet pipe; 409. Lower liquid outlet pipe; 5. Upper electric valve; 6. Lower electric valve; 7. Radar level gauge; 8. Liquid outlet elbow; 9. Vibration motor; 10. Upper support frame; 11. Side liquid inlet pipe; 12. Side sealing cover; 13. Lower support frame. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Reference Figure 1-Figure 3A methylal feeding device for producing polyoxymethylene dimethyl ether includes a methylal liquid tank 1, a fixed liquid tank 2, a liquid separator 3 and a processor. The bottom end of the methylal liquid tank 1 is connected to a tee pipe 101 through a flange. An upper electric valve 5 is connected between the fixed liquid tank 2 and the liquid separator 3 through a flange. When the upper electric valve 5 is opened, the methylal liquid in the fixed liquid tank 2 flows into the liquid separator 3. The bottom end of the liquid separator 3 is connected to a lower electric valve 6 through a flange. The top of the fixed liquid tank 2 and the top of the liquid separator 3 are both connected to a radar level meter 7 through a flange. The probes of the two radar level meters 7 are respectively located in the fixed liquid tank 2 and the liquid separator 3. The top of the methylal liquid tank 1 is welded with an upper support frame 10 , a methylal adjustment assembly 4 is provided on the top of the upper support frame 10, and the methylal adjustment assembly 4 includes a main pump body 401, which is fixed to the top of the upper support frame 10 by bolts, and the liquid inlet end of the main pump body 401 is connected with a main liquid inlet pipe 402, and the other end of the main liquid inlet pipe 402 is connected to one end of the tee pipe 101 through a flange, and the liquid outlet end of the main pump body 401 is connected with a main liquid outlet pipe 403, and the other end of the main liquid outlet pipe 403 is connected to the top of the fixed liquid tank 2 through a flange. Under the action of the main pump body 401, the methylal liquid in the methylal liquid tank 1 is drawn into the main liquid inlet pipe 402, and then input into the fixed liquid tank 2 through the main liquid outlet pipe 403;

[0022] An upper pump body 404 is fixed to the outer wall of one side of the fixed liquid tank 2 by bolts, and an upper liquid inlet pipe 405 is plugged into the liquid inlet end of the upper pump body 404, and the other end of the upper liquid inlet pipe 405 is connected to the fixed liquid tank 2. An upper liquid outlet pipe 406 is plugged into the liquid outlet end of the upper pump body 404, and the other end of the upper liquid outlet pipe 406 is connected to the methylal liquid tank 1. Under the action of the upper pump body 404, the excess methylal liquid in the fixed liquid tank 2 is pumped back to the methylal liquid tank through the upper liquid inlet pipe 405 and the upper liquid outlet pipe 406. 1, a lower pump body 407 is fixed to the outer wall of one side of the liquid separating tank 3 by bolts, the liquid inlet end of the lower pump body 407 is plugged with a lower liquid inlet pipe 408, the other end of the lower liquid inlet pipe 408 is communicated with the liquid separating tank 3, the liquid outlet end of the lower pump body 407 is plugged with a lower liquid outlet pipe 409, the other end of the lower liquid outlet pipe 409 is communicated with the fixed liquid tank 2, and under the action of the lower pump body 407, the excess methylal liquid in the liquid separating tank 3 is pumped back into the fixed liquid tank 2 through the lower liquid inlet pipe 408 and the lower liquid outlet pipe 409.

[0023] The bottom end of the three-way pipe 101 is connected to the lower sealing cover 102 through a flange, so as to facilitate the discharge of the residual methylal liquid in the methylal liquid tank 1. The bottom end of the lower electric valve 6 is connected to the liquid outlet elbow 8 through a flange. A vibration motor 9 is fixed to the outer wall of one side of the liquid separator 3 by bolts. The vibration motor 9 drives the liquid separator 3 to vibrate, thereby preventing the methylal liquid from adhering to the inner wall of the liquid separator 3 so that the methylal liquid can be completely discharged. A side inlet is welded on one side of the methylal liquid tank 1. Liquid pipe 11, the other end of the side liquid inlet pipe 11 is threadedly sleeved with a side sealing cover 12, unscrew the side sealing cover 12, and inject methylal liquid into the methylal liquid tank 1 from the side liquid inlet pipe 11. The bottom outer wall of the methylal liquid tank 1 is fixed with a lower support frame 13 by bolts. The processor is electrically connected to the main pump body 401, the upper pump body 404, the lower pump body 407, the upper electric valve 5, the lower electric valve 6, the radar level meter 7 and the vibration motor 9. The processor model is ARM9TDMI.

[0024] The operation principle of the present embodiment: during use, at first, the methylal liquid of a one-time delivery amount is drawn in the fixed liquid tank 2, main pump body 401 starts, under the effect of main pump body 401, the methylal liquid in the methylal liquid tank 1 is drawn in the main liquid inlet pipe 402, input in the fixed liquid tank 2 through main liquid outlet pipe 403 again, and by the radar level gauge 7 of fixed liquid tank 2, the liquid level monitoring in the fixed liquid tank 2, when the liquid level in the fixed liquid tank 2 reaches delivery amount, information is passed to the processor and processed, then, processor control main pump body 401 suspends work, if radar level gauge 7 detects that the methylal liquid in the fixed liquid tank 2 exceeds when, processor control upper pump body 404 starts, under the effect of upper pump body 404, redundant methylal liquid in the fixed liquid tank 2 is drawn back in the methylal liquid tank 1 through upper liquid inlet pipe 405 and upper liquid outlet pipe 406, until the methylal liquid in the fixed liquid tank 2 meets delivery amount;

[0025] Then, the methylal liquid in the fixed liquid tank 2 is added to the separating tank 3 in batches, the upper electric valve 5 is opened, the methylal liquid in the fixed liquid tank 2 flows into the separating tank 3, and is monitored by the radar level meter 7 on the separating tank 3. After the one-time addition amount is reached, the processor controls the upper electric valve 5 to close. If the radar level meter 7 detects that the methylal liquid in the separating tank 3 exceeds, the processor controls the lower pump body 407 to start, and under the action of the lower pump body 407, the excess methylal liquid in the separating tank 3 is pumped back into the fixed liquid tank 2 through the lower liquid inlet pipe 408 and the lower liquid outlet pipe 409 until the methylal liquid in the separating tank 3 meets the addition amount;

[0026] Next, a fixed amount of methylal liquid is added to the polyoxymethylene dimethyl ether production material, the lower electric valve 6 is opened, and the methylal liquid in the separatory tank 3 flows into the polyoxymethylene dimethyl ether production material through the liquid outlet elbow 8, completing the addition.

[0027] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A methylal feeding device for producing polyoxymethylene dimethyl ether, comprising a methylal liquid tank (1), a fixed liquid tank (2), a liquid separation tank (3) and a processor, characterized in that: The bottom end of the methylal liquid tank (1) is connected to a tee pipe (101) via a flange, an upper electric valve (5) is connected between the fixed liquid tank (2) and the liquid separation tank (3) via a flange, the bottom end of the liquid separation tank (3) is connected to a lower electric valve (6) via a flange, the top end of the fixed liquid tank (2) and the top end of the liquid separation tank (3) are both connected to radar level gauges (7) via flanges, and the probes of the two radar level gauges (7) are respectively located in the fixed liquid tank (2) and the liquid separation tank (3). The top of the methylal liquid tank (1) is fixedly connected to an upper support frame (10), and a methylal adjustment assembly (4) is provided on the top of the upper support frame (10). The methylal adjustment assembly (4) includes a main pump body (401), and the main pump body (401) is fixed to the top of the upper support frame (10) by bolts. The liquid inlet end of the main pump body (401) is plugged with a main liquid inlet pipe (402), and the other end of the main liquid inlet pipe (402) is connected to one end of the three-way pipe (101) through a flange. The main pump body (401) is connected to the liquid outlet end thereof with a main liquid outlet pipe (403), and the other end of the main liquid outlet pipe (403) is connected to the top of the fixed liquid tank (2) through a flange. The outer wall of one side of the fixed liquid tank (2) is fixedly connected to the upper pump body (404), and the liquid inlet end of the upper pump body (404) is connected to the upper liquid inlet pipe (405), and the other end of the upper liquid inlet pipe (405) is communicated with the fixed liquid tank (2). The liquid outlet end of the upper pump body (404) is connected to the upper liquid outlet pipe ( 406), the other end of the upper liquid outlet pipe (406) is communicated with the methylal liquid tank (1), a lower pump body (407) is fixedly connected to the outer wall of one side of the liquid separation tank (3), a lower liquid inlet pipe (408) is plugged into the liquid inlet end of the lower pump body (407), the other end of the lower liquid inlet pipe (408) is communicated with the liquid separation tank (3), a lower liquid outlet pipe (409) is plugged into the liquid outlet end of the lower pump body (407), and the other end of the lower liquid outlet pipe (409) is communicated with the fixed liquid tank (2).

2. A polyoxymethylene dimethyl ether production methylal feeding device according to claim 1, characterized in that: The bottom end of the three-way pipe (101) is connected to a lower sealing cover (102) via a flange.

3. The device for dispensing methylal from polyoxymethylene dimethyl ether according to claim 1, wherein: The bottom end of the lower electric valve (6) is connected to a liquid outlet elbow (8) via a flange.

4. The device for dispensing methylal from polyoxymethylene dimethyl ether according to claim 1, wherein: A vibration motor (9) is fixedly connected to an outer wall of one side of the liquid separation tank (3).

5. The device for dispensing methylal from polyoxymethylene dimethyl ether according to claim 1, wherein: A side liquid inlet pipe (11) is fixedly connected to one side of the methylal liquid tank (1), and a side sealing cover (12) is threadedly sleeved on the other end of the side liquid inlet pipe (11).

6. The device for dispensing methylal from polyoxyethylene dimethyl ether according to claim 1, characterized in that: The outer wall of the bottom end of the methylal liquid tank (1) is fixedly connected to a lower support frame (13).

7. The device for dispensing methylal from polyoxymethylene dimethyl ether according to claim 1, wherein: The processor is electrically connected to the main pump body (401), the upper pump body (404), the lower pump body (407), the upper electric valve (5), the lower electric valve (6), the radar level meter (7) and the vibration motor (9).

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