Pneumatic diaphragm pump for circulation of petroleum resin catalyst

Abstract

The utility model discloses a pneumatic diaphragm pump for circulation of a petroleum resin catalyst, which relates to the technical field of pneumatic diaphragm pump appliances and comprises a main body, a gas distribution cover is mounted at the front end of the main body, a gas inlet cover is mounted at the front end of the gas distribution cover, and a first mounting plate is mounted at one end of the main body; a first mounting disc is mounted at one end of the main body, a second mounting disc is mounted at the other end of the main body, a first connecting disc is mounted at one end of the first mounting disc, a second connecting disc is mounted at the other end of the second mounting disc, a discharging table is mounted at the upper ends of the first connecting disc and the second connecting disc, a feeding table is mounted at the lower ends of the first connecting disc and the second connecting disc, and a supporting table is mounted at the lower end of the feeding table; according to the utility model, the sliding table is matched with the first air inlet groove, the second air inlet groove, the main air exhaust groove and the auxiliary air exhaust groove in the air distribution cover, so that the effect of periodically feeding air back and forth is achieved, and the problems that the air conveying path is disordered and the diaphragm cannot be driven to move in order are solved; and the gas control accuracy and the operation stability of the pneumatic diaphragm pump are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of pneumatic diaphragm pumps, and in particular to a pneumatic diaphragm pump for circulating petroleum resin catalysts. Background Technology

[0002] In the production of petroleum resins, the circulation and delivery of catalysts is one of the key links. Pneumatic diaphragm pumps are widely used in this field due to their strong corrosion resistance and good sealing performance. However, traditional pneumatic diaphragm pumps have certain defects in gas control and catalyst delivery.

[0003] In existing technologies, the gas control systems of pneumatic diaphragm pumps are typically complex in structure, making precise control of gas flow difficult and prone to chaotic gas delivery paths. This results in the inability to drive the diaphragm movement in an orderly manner, thus affecting the pump's operational stability and efficiency. Furthermore, during catalyst delivery, the lack of an efficient unidirectional control mechanism makes backflow of the catalyst common, and delivery may be obstructed. This not only reduces the efficiency of catalyst circulation but may also affect the production quality of petroleum resins. Specifically, traditional pneumatic diaphragm pumps cannot achieve periodic back-and-forth gas delivery within the main inlet, leading to irregular diaphragm movement and difficulty in ensuring stable pump operation. In the catalyst delivery stage, the insufficient precision of the check valve's coordination with the diaphragm prevents effective control of unidirectional catalyst flow, causing backflow during catalyst intake and pumping, severely impacting the reliability of catalyst circulation. Therefore, improvements are needed to address these issues. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a pneumatic diaphragm pump for petroleum resin catalyst circulation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a pneumatic diaphragm pump for circulating petroleum resin catalyst, comprising a main body, a gas distribution hood installed at the front end of the main body, an air inlet hood installed at the front end of the gas distribution hood, and a first mounting plate installed at one end of the main body; and a second mounting plate installed at the other end of the main body, a first connecting plate installed at one end of the first mounting plate, a second connecting plate installed at the other end of the second mounting plate, a discharge platform installed at the upper end of the first connecting plate and the second connecting plate, and a feed platform installed at the lower end of the first connecting plate and the second connecting plate, with a support platform installed at the lower end of the feed platform.

[0006] Preferably, a first one-way valve and a second one-way valve are respectively installed at both ends of the inner cavity of the feeding platform, and a third one-way valve and a fourth one-way valve are respectively installed at both ends of the inner cavity of the discharging platform. The one-way ends of the first one-way valve and the second one-way valve are respectively connected to the first connecting plate and the second connecting plate, and the one-way ends of the third one-way valve and the fourth one-way valve are connected to the discharging platform.

[0007] Preferably, a second diaphragm is installed in the proximal end of the first mounting plate and the first connecting plate, and a first diaphragm is installed in the proximal end of the second mounting plate and the second connecting plate.

[0008] Preferably, the air intake hood has a main air intake hole, a first air intake hole, and a second air intake hole. The front end of the air distribution hood has a first auxiliary hole and a second auxiliary hole. The rear end of the air distribution hood has a first air intake groove, a main exhaust groove, a second air intake groove, and an auxiliary exhaust groove, respectively, from top to bottom. The first air intake groove leads to a second mounting plate, and the second air intake groove leads to a first mounting plate.

[0009] Preferably, a sliding table is installed inside the air distribution hood. The sliding table has a double roller structure, and the first air inlet and the second air inlet are respectively connected to the first auxiliary hole and the second auxiliary hole opened at the front end of the air distribution hood.

[0010] Preferably, the sliding table has a first roll cavity and a second roll cavity at its upper and lower ends, respectively. The first air inlet is located at one end of the first roll cavity, the second air inlet is located at one end of the second roll cavity, the first air inlet groove is located at the other end of the first roll cavity, the main exhaust groove and the second air inlet groove are located at the other end of the second roll cavity, and the auxiliary exhaust groove is located at the lower end of the sliding table.

[0011] Preferably, the main body has a first exhaust groove and a second exhaust groove. The rear end of the first exhaust groove has a vertical sealing groove, and a sealing block is installed in the sealing groove. The rear end of the second exhaust groove has a horizontal buffer groove, and a buffer rod is installed in the buffer groove. The buffer rod has a porous structure. The first exhaust groove is connected to the first air inlet groove, and the second exhaust groove is connected to the second air inlet groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: In this utility model, the cooperation between the sliding table and the first air inlet groove, the second air inlet groove, the main exhaust groove, and the auxiliary exhaust groove in the gas distribution hood periodically sends the gas in the main air inlet back and forth, controlling the gas flow direction. This solves the problem of chaotic gas delivery paths and the inability to drive the diaphragm movement in an orderly manner, improving the accuracy of gas control and the stability of operation of the pneumatic diaphragm pump. The cooperation between the first one-way valve, the second one-way valve, the third one-way valve, and the fourth one-way valve and the first and second diaphragms coordinates the back and forth movement of the diaphragms, controls the unidirectional flow of the catalyst, and realizes the catalyst intake and pumping out. This solves the problem of backflow and poor delivery that may occur during catalyst delivery, improving the efficiency and reliability of petroleum resin catalyst circulation delivery. The cooperation between the buffer rod and the buffer groove prevents the first and second diaphragms from impacting the interior of the main body with large impact forces, solving the problem of excessive impact force during diaphragm movement causing damage to the equipment, and improving the service life and operational stability of the equipment. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0014] Figure 1 This is a schematic diagram of the overall structure proposed in this utility model;

[0015] Figure 2 This is a horizontal half-sectional view of the overall structure proposed in this utility model;

[0016] Figure 3 This is a longitudinal half-sectional view of the overall structure proposed in this utility model;

[0017] Figure 4 The present utility model proposes Figure 3 Enlarged schematic diagram of section A in the middle;

[0018] Figure 5 This is a schematic diagram of the main structure proposed in this utility model;

[0019] Figure 6 This is a schematic diagram of the structure of the first and second roll cavities proposed in this utility model;

[0020] Figure 7 This is a schematic diagram of the buffer rod structure proposed in this utility model.

[0021] The components in the diagram are numbered as follows: 1. Main body; 2. Air distribution hood; 3. Air inlet hood; 4. First connecting plate; 5. Second connecting plate; 6. Discharge platform; 7. Feeding platform; 8. Support platform; 9. First one-way valve; 10. Second one-way valve; 11. Third one-way valve; 12. Fourth one-way valve; 13. First diaphragm; 14. Second diaphragm; 15. First air inlet; 16. Second air inlet; 17. Sliding platform; 18. First air inlet groove; 19. Main exhaust groove; 20. Second air inlet groove; 21. Auxiliary exhaust groove; 22. First mounting plate; 23. Second mounting plate; 24. Main air inlet; 25. First roll cavity; 26. Second roll cavity; 27. First exhaust groove; 28. Second exhaust groove; 29. ​​Sealing groove; 30. Sealing block; 31. Buffer groove; 32. Buffer rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example: See Figure 1-7This utility model discloses a pneumatic diaphragm pump for circulating petroleum resin catalysts, comprising a main body 1 for easy installation of subsequent devices; a gas distribution hood 2 is installed at the front end of the main body 1 to facilitate reasonable separation of the airflow from the inlet hood 3; an inlet hood 3 is installed at the front end of the gas distribution hood 2 to facilitate gas entry; a first mounting plate 22 is installed at one end of the main body 1 to facilitate the installation of a first connecting plate 4; a second mounting plate 23 is installed at the other end of the main body 1 to facilitate the installation of a second connecting plate 5; the first connecting plate 4 is installed at one end of the first mounting plate 22 to facilitate the subsequent installation of a second one-way valve 10 and a third one-way valve 11; the second connecting plate 5 is installed at the other end of the second mounting plate 23 to facilitate the subsequent installation of a first one-way valve 9 and a fourth one-way valve 12; a discharge platform 6 is installed at the upper end of the first connecting plate 4 and the second connecting plate 5 to facilitate the pumping out of liquid; and a discharge platform 6 is installed at the lower end of the first connecting plate 4 and the second connecting plate 5. The device is equipped with a feed platform 7, which facilitates the entry of liquid. A support platform 8 is installed at the lower end of the feed platform 7 to support the entire device. A first check valve 9 and a second check valve 10 are installed at both ends of the inner cavity of the feed platform 7, and a third check valve 11 and a fourth check valve 12 are installed at both ends of the inner cavity of the discharge platform 6. The one-way ends of the first check valve 9 and the second check valve 10 are connected to the first connecting plate 4 and the second connecting plate 5, respectively. The one-way ends of the third check valve 11 and the fourth check valve 12 are connected to the discharge platform 6. The first check valve 9, the second check valve 10, the third check valve 11, and the fourth check valve 12 facilitate the reciprocating movement of the first diaphragm 13 and the second diaphragm 14; the second diaphragm 14 is installed in the proximal end of the first mounting plate 22 and the first connecting plate 4, and the movement of the second check valve 10 and the third check valve 11 is easily controlled through the second diaphragm 14; the first diaphragm 13 is installed in the proximal end of the second mounting plate 23 and the second connecting plate 5, and the movement of the first check valve 9 and the fourth check valve 12 is easily controlled through the first diaphragm 13;

[0024] In this invention, the air intake hood 3 is provided with a main air intake hole 24, a first air intake hole 15, and a second air intake hole 16. The first air intake hole 15 and the second air intake hole 16 facilitate the subsequent control of the back-and-forth movement of the sliding table 17. The front end of the air distribution hood 2 is provided with a first auxiliary hole and a second auxiliary hole, and the rear end of the air distribution hood 2 is provided with a first air intake groove 18, a main exhaust groove 19, a second air intake groove 20, and an auxiliary exhaust groove 21 from top to bottom. The first air intake groove 18 facilitates the entry of gas from the air distribution hood 2 into the second diaphragm 14 built into the second mounting plate 23. The main exhaust groove 19 facilitates the periodic back-and-forth exhaust of the first diaphragm 13 and the second diaphragm 14. The second air intake groove 16 facilitates the periodic exhaust of the gas from the first diaphragm 13 and the second diaphragm 14. The groove 20 facilitates the entry of gas from the gas distribution hood 2 into the first mounting plate 22; the auxiliary exhaust groove 21 facilitates the discharge of gas from the bottom of the gas distribution hood 2; the first air inlet groove 18 leads to the second mounting plate 23, and the second air inlet groove 20 leads to the first mounting plate 22; a sliding table 17 is installed inside the gas distribution hood 2, which facilitates the periodic back-and-forth supply of gas from the main air inlet 24; the sliding table 17 has a double roller structure, and the first air inlet 15 and the second air inlet 16 are respectively connected to the first auxiliary hole and the second auxiliary hole opened at the front end of the gas distribution hood 2; the upper and lower ends of the sliding table 17 are respectively provided with a first roller cavity 25 and a second roller cavity 26. An air inlet 15 is located at one end of the first roll chamber 25. The first roll chamber 25 and the second roll chamber 26 facilitate the flow of gas entering through the main air inlet 24, which drives the sliding table 17 to periodically reciprocate. A second air inlet 16 is located at one end of the second roll chamber 26. A first air inlet groove 18 is located at the other end of the first roll chamber 25. A main exhaust groove 19 and a second air inlet groove 20 are located at the other end of the second roll chamber 26. An auxiliary exhaust groove 21 is located at the lower end of the sliding table 17. The main body 1 has a first exhaust groove 27 and a second exhaust groove 28. The first exhaust groove 27 and the second exhaust groove 28 facilitate the interaction between the main exhaust groove 19 and the auxiliary exhaust groove 21 on the first diaphragm 13 and the second diaphragm 1. The exhaust of the first exhaust groove 27 has a vertical sealing groove 29 at its rear end, through which a sealing block 30 is easily installed; the sealing block 30 is installed in the sealing groove 29, through which the exhaust of the first exhaust groove 27 is easily restricted; the second exhaust groove 28 has a horizontal buffer groove 31 at its rear end, through which a buffer rod 32 is easily installed; the buffer rod 32 is installed in the buffer groove 31, and the buffer rod 32 has a porous structure, through which the buffer rod 32 is easily prevented from causing the first diaphragm 13 and the second diaphragm 14 to impact the interior of the main body 1 with a large impact force; the first exhaust groove 27 is connected to the first air inlet groove 18, and the second exhaust groove 28 is connected to the second air inlet groove 20.

[0025] Working principle: When using this utility model, the entire assembly is installed on the support platform 8 to check the seal between the main body 1 and the air inlet hood 3 and the gas distribution hood 2. The sealing block 30 installed in the sealing groove 29 is removed. An external suction pump is connected to the sealing groove 29, and helium is introduced through the second exhaust groove 28. The helium passes through the buffer rod 32 and the auxiliary exhaust groove 21 and enters the bottom surface of the gas distribution hood 2 and the bottom end of the sliding table 17. The helium lifts the sliding table 17, and the sliding table 17 is checked for normal operation. An external connecting pipe is connected to the resin catalyst and the feeding platform 7. An external air pump is connected to the main air inlet 24 opened in the air inlet hood 3. The air pump gas enters the air inlet hood 3, and the gas enters the first roller cavity 25 through the first air inlet 15 and then enters the first inlet. Within the gas groove 18, the gas from the first inlet groove 18 blows the first diaphragm 13 to the inner wall of the second connecting plate 5 via the second mounting plate 23. As the first diaphragm 13 moves towards the inner wall of the second connecting plate 5, the fourth one-way valve 12 is opened by the gas inside the second connecting plate 5, while the first one-way valve 9 remains stationary. Excess gas then presses against the sliding table 17, causing it to move downwards and expel helium. Because the sliding table 17 moves downwards, the gas from the first inlet hole 15 cannot reach the first roll cavity 25. Since the first inlet groove 18 and the main exhaust groove 19 are located within the first roll cavity 25, the first inlet groove 18 discharges the gas from the first diaphragm 13 through the main exhaust groove 19 and the first exhaust groove 27. Due to the external air pump... The presence of gas in the first diaphragm 13 causes it to retract rapidly, impacting the buffer rod 32 installed in the buffer groove 31 and absorbing the gas in the second connecting plate 5. This causes the first one-way valve 9 and the fourth one-way valve 12 to move. The downward movement of the first one-way valve 9 draws the catalyst into the second connecting plate 5. When the fourth one-way valve 12 moves upward, the catalyst cannot enter the discharge platform 6. Due to the downward movement of the sliding platform 17, the second air inlet 16 and the second air inlet groove 20 are located in the second roll cavity 26. The gas in the air inlet hood 3 enters the second air inlet groove 20 through the second air inlet 16 and the second roll cavity 26. The gas in the second air inlet groove 20 will blow the second diaphragm 14 to the inner wall of the first connecting plate 4 through the first mounting plate 22. The gas in the second diaphragm 14 blows the second diaphragm 14 to the inner wall of the first connecting plate 4. During movement, the third one-way valve 11 is opened by the gas inside the first connecting plate 4 while the second one-way valve 10 remains stationary. Then, the excess gas will squeeze the sliding table 17, causing the sliding table 17 to move upward and reset, so that the second air inlet groove 20 and the main exhaust groove 19 are located in the second roll cavity 26. The gas from the second air inlet 16 cannot reach the second roll cavity 26. Due to the external air pump, the second diaphragm 14 quickly retracts and impacts the buffer rod 32 in the buffer groove 31, which also absorbs the gas in the first connecting plate 4, driving the movement of the second one-way valve 10 and the third one-way valve 11. The downward movement of the second one-way valve 10 draws the catalyst into the first connecting plate 4, while the upward movement of the third one-way valve 11 prevents the catalyst from entering the discharge platform 6. The above is one cycle.

[0026] When the second cycle begins, the first connecting plate 4 and the second connecting plate 5 are already filled with catalyst. When the first diaphragm 13 begins to move towards the inner wall of the second connecting plate 5, the first one-way valve 9 moves down and the fourth one-way valve 12 moves up, pumping the catalyst into the discharge platform 6. Then, the above steps are repeated, pumping the catalyst into the second connecting plate 5 when the first diaphragm 13 retracts. When the second diaphragm 14 begins to move towards the inner wall of the first connecting plate 4, the second one-way valve 10 moves down and the third one-way valve 11 moves up, pumping the catalyst into the discharge platform 6. Then, the above steps are repeated, pumping the catalyst into the first connecting plate 4 when the second diaphragm 14 retracts.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pneumatic diaphragm pump for circulating petroleum resin catalysts, comprising a main body (1), characterized in that: The main body (1) is equipped with a gas distribution hood (2) at the front end, and a gas inlet hood (3) is installed at the front end of the gas distribution hood (2). A first mounting plate (22) is installed at one end of the main body (1); and a second mounting plate (23) is installed at the other end of the main body (1). A first connecting plate (4) is installed at one end of the first mounting plate (22), and a second connecting plate (5) is installed at the other end of the second mounting plate (23). A discharge platform (6) is installed at the upper end of the first connecting plate (4) and the second connecting plate (5), and a feeding platform (7) is installed at the lower end of the first connecting plate (4) and the second connecting plate (5). A support platform (8) is installed at the lower end of the feeding platform (7).

2. The pneumatic diaphragm pump for petroleum resin catalyst circulation according to claim 1, characterized in that: The inner ends of the feed platform (7) are respectively equipped with a first one-way valve (9) and a second one-way valve (10), and the inner ends of the discharge platform (6) are respectively equipped with a third one-way valve (11) and a fourth one-way valve (12). The one-way ends of the first one-way valve (9) and the second one-way valve (10) are respectively connected to the first connecting plate (4) and the second connecting plate (5), and the one-way ends of the third one-way valve (11) and the fourth one-way valve (12) are connected to the discharge platform (6).

3. A pneumatic diaphragm pump for petroleum resin catalyst circulation according to claim 1, characterized in that: A second diaphragm (14) is installed in the adjacent ends of the first mounting plate (22) and the first connecting plate (4), and a first diaphragm (13) is installed in the adjacent ends of the second mounting plate (23) and the second connecting plate (5).

4. A pneumatic diaphragm pump for petroleum resin catalyst circulation according to claim 1, characterized in that: The air intake hood (3) is provided with a main air intake hole (24), a first air intake hole (15), and a second air intake hole (16). The front end of the air distribution hood (2) is provided with a first auxiliary hole and a second auxiliary hole. The rear end of the air distribution hood (2) is provided with a first air intake groove (18), a main exhaust groove (19), a second air intake groove (20), and an auxiliary exhaust groove (21) from top to bottom. The first air intake groove (18) leads to a second mounting plate (23), and the second air intake groove (20) leads to a first mounting plate (22).

5. A pneumatic diaphragm pump for petroleum resin catalyst circulation according to claim 4, characterized in that: The gas distribution hood (2) is equipped with a sliding table (17), which is a double roller structure. The first air inlet (15) and the second air inlet (16) are respectively connected to the first auxiliary hole and the second auxiliary hole opened at the front end of the gas distribution hood (2).

6. A pneumatic diaphragm pump for petroleum resin catalyst circulation according to claim 5, characterized in that: The sliding table (17) has a first roll cavity (25) and a second roll cavity (26) at its upper and lower ends respectively. The first air inlet (15) is located at one end of the first roll cavity (25), the second air inlet (16) is located at one end of the second roll cavity (26), the first air inlet groove (18) is located at the other end of the first roll cavity (25), the main exhaust groove (19) and the second air inlet groove (20) are located at the other end of the second roll cavity (26), and the auxiliary exhaust groove (21) is located at the lower end of the sliding table (17).

7. A pneumatic diaphragm pump for petroleum resin catalyst circulation according to claim 1, characterized in that: The main body (1) has a first exhaust groove (27) and a second exhaust groove (28). The rear end of the first exhaust groove (27) has a vertical sealing groove (29). A sealing block (30) is installed in the sealing groove (29). The rear end of the second exhaust groove (28) has a horizontal buffer groove (31). A buffer rod (32) is installed in the buffer groove (31). The buffer rod (32) has a porous structure. The first exhaust groove (27) is connected to the first air inlet groove (18). The second exhaust groove (28) is connected to the second air inlet groove (20).

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