WO2021223066A1

WO2021223066A1 - Raw material filtering device for pyromellitic dianhydride production

Info

Publication number: WO2021223066A1
Application number: PCT/CN2020/088598
Authority: WO
Inventors: 谈勇
Original assignee: 鹏辰新材料科技股份有限公司
Priority date: 2020-05-05
Filing date: 2020-05-05
Publication date: 2021-11-11
Also published as: JP2022551981A; JP7346728B2; CN115243779A; DE212020000054U1

Abstract

A raw material filtering device for pyromellitic dianhydride production, comprising a box body (1), a first support plate (21), a second support plate (23), a carrying frame (31), a filter screen (3), and an opening (32); wherein the first support plate (21) is fixed on one side of the inner wall of the box body (1); the second support plate (23) is fixed on the side in the box body (1) away from the first support plate (21); a first concave platform (22) is machined on the end of the upper side of the first support plate (21) close to the second support plate (23); a second concave platform is machined on the end of the upper side of the second support plate (23) close to the first support plate (21); two ends of the carrying frame (31) are respectively mounted in the first concave platform (22) and the second concave platform; the filter screen (3) is fixed in the carrying frame (31); the opening (32) is formed in the box body (1) between the first support plate (21) and the second support plate (23), and the end of the carrying frame (31) away from the first support plate (21) and the second support plate (23) is clamped in the opening (32); a pull plate (33) is fixed on the end of the carrying frame (31) away from the interior of the box body (1), and is attached to the outer surface of the box body (1). The device is simple in structure and facilitates filtering impurities in raw materials.

Description

Raw material filtering device for production of pyromellitic dianhydride

Technical field

The utility model relates to the field of pyromellitic dianhydride production equipment, in particular to a raw material filtering device for the production of pyromellitic dianhydride.

Background technique

The production process of pyromellitic dianhydride includes the oxidation, hydrolysis and refining of mesitylene. The liquid then enters the reactor for reaction. At present, the existing production lines usually use steam to melt the raw materials, and then use a submerged pump to pump the melted raw materials into a metering tank for measurement, and then pass the metering pump into the fixed bed reactor. During the preparation process, the material is added. It is easy to introduce impurities at times, and the impurities are easy to block the pump head and the liquid outlet pipe during the raw material transportation process.

After removing the connecting pipe of the pump outlet, disassemble the pump outlet pipe and pump head to clean up impurities. Install the pump again, and then connect the liquid outlet pipe, which is cumbersome and time-consuming and laborious, which affects production efficiency. Therefore, how to simplify the impurity filtration operation in the production process of pyromellitic dianhydride and improve the production efficiency has become an urgent problem to be solved.

Utility model content

(1) Purpose of utility model

In order to solve the technical problems existing in the background technology, the present utility model proposes a raw material filtering device for the production of pyromellitic dianhydride, which has a simple structure, good filtering effect of raw materials of pyromellitic dianhydride, and effectively improves the production efficiency.

(2) Technical solution

The utility model provides a raw material filtering device for the production of pyromellitic dianhydride, which comprises a box body, a first support plate, a second support plate, a carrier, a filter screen and an opening;

The first support plate is fixed on one side of the inner wall of the box; the second support plate is fixed on the side of the inside of the box away from the first support plate; the first recess is processed on the end of the first support plate close to the second support plate; One end of the second support plate close to the first support plate is processed with a second recess; both ends of the carrier are installed inside the first recess and the second recess respectively; the filter screen is fixed inside the support; the first support plate and An opening is processed on the box body between the second supporting plates, and the end of the carrier away from the first supporting plate and the second supporting plate is clamped inside the opening; the end of the carrier away from the inside of the box is fixed to the pull plate, and the pull plate is attached Closed on the outer surface of the box.

Preferably, a handle is installed at a middle position on the outer side of the pull plate away from the box body, and the outer surface of the handle is wrapped with a non-slip sleeve.

Preferably, a fixed rod is installed at the upper middle of the box on the lower side of the pull plate; the ring side of the fixed rod is fitted with a spring; one end of the spring is fixed on the outer surface of the box, and the end of the spring away from the box is connected to the outer surface of the baffle ring; Annular side of the fixed rod; the end of the fixed rod away from the box body is sleeved with the connecting block, the outer surface of the connecting block is close to the spring, and the side of the connecting block is attached to the baffle ring; An annular slider is installed inside; the end of the annular slider away from the annular chute is fixed on the outer surface of the connecting block; the end of the connecting block close to the box body is far away from the fixed rod to fix the pressure block; the pressure block has a hemispherical structure.

Preferably, the connecting block on the outer side of the fixing rod fixes the cylinder on the side away from the retaining ring, and the annular side of the cylinder is processed with anti-slip patterns.

Preferably, a limit groove is processed on the annular side surface of the fixed rod; the limit block is fixed on the annular side surface of the retaining ring, and the limit block is clamped inside the limit groove.

Preferably, a groove is processed inside the opening, and a sealing ring is installed inside the groove; the outer surface of the carrier inside the opening is closely attached to the sealing ring.

Preferably, an inlet is installed at the upper end of the box body, and the inlet is connected to the raw material conveying equipment through a pipeline.

Compared with the prior art, the above-mentioned technical solution of the present invention has the following beneficial technical effects: the raw material for the production of pyromellitic dianhydride is input to the inside of the box through the inlet. The impurities in the filter are blocked and filtered. When there are more impurities on the filter screen, the cylinder is rotated to drive the pressure block to separate from the pull plate, and then the carrier is moved away from the box. The movement of the carrier drives the filter to move out of the box. In addition, the impurities on the filter screen are cleaned. The utility model has a simple structure, facilitates the filtration of impurities, and improves the production efficiency.

Description of the drawings

Figure 1 is a schematic structural diagram of a raw material filtering device for the production of pyromellitic dianhydride proposed by the utility model.

Figure 2 is a schematic diagram of the front cross-sectional structure of a raw material filter device for the production of pyromellitic dianhydride proposed by the utility model.

Fig. 3 is a schematic diagram of an enlarged structure at A in Fig. 2.

Figure 4 is a schematic top view of a raw material filtering device for the production of pyromellitic dianhydride proposed by the utility model.

Reference signs: 1. Box body; 2. Discharge port; 3. Filter screen; 4. Press block; 5. Feed port; 21. First support plate; 22. First recess; 23. Second support Plate; 31, carrier; 32, opening; 33, pull plate; 41, connecting block; 42, cylinder; 43, fixed rod; 44, retaining ring; 45, spring; 46, limit groove.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary, and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily obscuring the concept of the present invention.

As shown in Figures 1-4, a raw material filtering device for the production of pyromellitic dianhydride proposed by the present invention includes a box body 1, a first support plate 21, a second support plate 23, a carrier 31, and a filter screen. 3 and opening 32;

The first support plate 21 is fixed on one side of the inner wall of the box body 1; the inner side of the box body 1 away from the first support plate 21 is fixed to the second support plate 23; the upper side of the first support plate 21 is close to the second support plate 23 One end is processed with the first recess 22; the upper side of the second support plate 23 is close to the first support 21 at the end of the second recess; the two ends of the carrier 31 are respectively installed inside the first recess 22 and the second recess; The net 3 is fixed inside the carrier 31; the box body 1 between the first supporting plate 21 and the second supporting plate 23 is processed with an opening 32, and the carrier 31 is away from one end of the first supporting plate 21 and the second supporting plate 23 It is clamped inside the opening 32; the end of the carrier 31 away from the inside of the box body 1 fixes the pull plate 33, and the pull plate 33 is attached to the outer surface of the box body 1.

In the present utility model, when the filter screen 3 is installed, the carrier 31 is passed through the opening 32 and moved to the inside of the box 1, and the two ends of the carrier 31 are respectively installed inside the first concave table 22 and the second concave table, and The pull plate 33 is attached to the outer surface of the box body 1, and then the cylinder 42 is rotated. The cylinder 42 rotates to drive the connecting block 41 to rotate, and the connecting block 41 rotates to drive the pressure block 4 to rotate. When the pressure block 4 and the pull plate 33 are attached , The pull plate 33 generates a thrust on the pressure block 4, which causes the pressure block 4 to move away from the box 1. The movement of the pressure block 4 drives the baffle ring 44 to move through the annular slider, and the movement of the baffle ring 44 generates a tensile force on the spring 45. The spring 45 is deformed. When the pressure block 4 is completely moved to the pull plate 33, the pressure block 4 is pressed against the pull plate 33 under the elastic force of the spring 45 to restore the deformation, and the installation of the filter screen 3 is completed. In the process, the raw materials are transported to the inside of the box 1 through the inlet 5, and when the raw materials pass through the filter screen 3, the filter screen 3 will block impurities. When the impurities on the filter screen 3 accumulate more, the cylinder 42 is rotated in the reverse direction. The rotation of the cylinder 42 drives the connection block 41 to rotate, so that the connection block 41 drives the pressing block 4 to separate from the pull plate 33, and then pulls the handle away from the box 1, and the movement of the handle drives the pull plate 33 to move, and the movement of the pull plate 33 drives the carrier. The rack 31 moves, and the carrier 31 moves to drive the filter screen 3 to move, so that the filter screen 3 is moved out of the box 1, and the impurities on the filter screen 3 are processed. This device is convenient for filtering impurities, and the filtering operation of raw materials is convenient. The effect is good.

In an optional embodiment, a handle is installed at an intermediate position on the outer side of the pull plate 33 away from the box 1, and the outer surface of the handle is wrapped with a non-slip sleeve.

It should be noted that the installation of the handle facilitates the pulling of the pull plate 33, thereby facilitating the movement of the filter screen 3.

In an alternative embodiment, a fixed rod 43 is installed at the upper middle position of the box 1 on the lower side of the pull plate 33; the annular side of the fixed rod 43 is sleeved with a spring 45; one end of the spring 45 is fixed on the outer surface of the box 1, and the spring 45 is far away from the box. One end of the body 1 is connected to the outer surface of the baffle ring 44; the baffle ring 44 is sleeved on the annular side surface of the fixed rod 43; The ring 44 fits together; the side of the outer surface of the retaining ring 44 close to the connecting block 41 is processed with an annular sliding groove, and an annular sliding block is installed inside the annular sliding groove; the end of the annular sliding block away from the annular sliding groove is fixed on the outer surface of the connecting block 41; The end of the block 41 close to the box 1 and far away from the fixing rod 43 fixes the pressing block 4; the pressing block 4 has a hemispherical structure.

It should be noted that, under the action of the elastic force of the spring 45, the pressing block 4 is pressed against the pull plate 33 to realize the installation and positioning of the carrier 31 and improve the stability of the installation of the filter screen 3.

In an optional embodiment, the connecting block 41 on the outer side of the fixing rod 43 fixes the cylinder 42 on the side away from the retaining ring 44, and the annular side surface of the cylinder 42 is processed with anti-slip patterns.

It should be noted that the arrangement of the cylinder 42 facilitates the rotation of the connecting block 41.

In an optional embodiment, a limit groove 46 is machined on the annular side surface of the fixing rod 43; a limit block is fixed on the annular side surface of the retaining ring 44, and the limit block is clamped inside the limit slot 46.

It should be noted that the arrangement of the limit groove 46 and the limit block realizes the limit of the stop ring 44 and prevents the stop ring 44 from rotating.

In an alternative embodiment, a groove is machined inside the opening 32, and a sealing ring is installed in the groove; the outer surface of the carrier 31 inside the opening 32 is tightly attached to the sealing ring.

It should be noted that the arrangement of the sealing ring improves the sealing performance of the box body 1.

In an optional embodiment, an inlet 5 is installed at the upper end of the box body 1, and the inlet 5 is connected to the raw material conveying equipment through a pipeline.

It should be noted that the setting of the inlet 5 is convenient for inputting raw materials into the inside of the box 1.

It should be understood that the above-mentioned specific embodiments of the present invention are only used to exemplify or explain the principles of the present invention, and do not constitute a limitation to the present invention. Therefore, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present utility model should be included in the protection scope of the present utility model. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundary of the appended claims, or equivalent forms of such scope and boundary.

Claims

A raw material filtering device for the production of pyromellitic dianhydride, which is characterized in that it comprises a box body (1), a first support plate (21), a second support plate (23), a carrier (31), and a filter screen ( 3) And the opening (32);

The first support plate (21) is fixed on one side of the inner wall of the box body (1); the second support plate (23) is fixed on the side of the box body (1) away from the first support plate (21); the first support plate (21) One end of the upper side close to the second support plate (23) is processed with the first recess (22); the upper side of the second support plate (23) is close to the end of the first support plate (21) to process the second recess; The two ends of the frame (31) are respectively installed inside the first recessed platform (22) and the second recessed platform; the filter screen (3) is fixed inside the carrier (31); the first support plate (21) and the second support plate ( An opening (32) is machined on the box (1) between 23), and the end of the carrier (31) away from the first support plate (21) and the second support plate (23) is clamped inside the opening (32) The carrier (31) is far away from the inside of the box (1), and the pull plate (33) is fixed at one end, and the pull plate (33) is attached to the outer surface of the box (1).
A raw material filtering device for the production of pyromellitic dianhydride according to claim 1, characterized in that the outer surface of the pull plate (33) is equipped with a handle at an intermediate position on the side away from the box body (1), and the outer surface of the handle is wrapped Non-slip cover.
A raw material filtering device for the production of pyromellitic dianhydride according to claim 1, characterized in that a fixed rod (43) is installed at the upper middle position of the box (1) on the lower side of the pull plate (33); (43) A ring-shaped side set spring (45); one end of the spring (45) is fixed on the outer surface of the box (1), and the end of the spring (45) away from the box (1) is connected to the outer surface of the baffle ring (44); the baffle ring (44) is sleeved on the annular side of the fixed rod (43); the end of the fixed rod (43) away from the box (1) is sleeved with the connecting block (41), the outer surface of the connecting block (41) is close to the spring (45) and the side The ring (44) fits together; the side of the retaining ring (44) near the connecting block (41) is processed with an annular slide groove, and the annular slide groove is installed inside the annular slide groove; the end of the annular slide block away from the annular slide groove is fixed in the connection The outer surface of the block (41); the side of the connecting block (41) close to the box body (1) and the end away from the fixed rod (43) fixes the pressing block (4); the pressing block (4) is in a hemispherical structure.
The raw material filtering device for the production of pyromellitic dianhydride according to claim 3, wherein the connecting block (41) on the outer side of the fixing rod (43) has a fixed cylinder on the side far from the retaining ring (44) (42), and the circular side of the cylinder (42) is processed with anti-skid patterns.
The raw material filtering device for the production of pyromellitic dianhydride according to claim 3, characterized in that the annular side surface of the fixing rod (43) is processed with a limit groove (46); The limit block is locked inside the limit slot (46).
A raw material filtering device for the production of pyromellitic dianhydride according to claim 1, wherein a groove is processed inside the opening (32), and a sealing ring is installed inside the groove; a carrier ( 31) The outer surface fits tightly with the sealing ring.
A raw material filtering device for the production of pyromellitic dianhydride according to claim 1, wherein the upper end of the box (1) is equipped with an inlet (5), and the inlet (5) is transported with the raw material through a pipeline. The equipment is connected.