Energy-saving screw pump for sodium sulfite production

Abstract

The invention relates to the technical field of screw pumps, in particular to an energy-saving screw pump for sodium sulfite production. Comprising a material suction cylinder, the material suction cylinder is provided with a driving device, the material suction cylinder is communicated with a pumping cylinder, an output shaft of the driving device is connected with a transmission rod through a universal joint, the transmission rod is connected with a screw rod through a universal joint, the pumping cylinder is provided with a blocking piece, and the blocking piece is provided with a plurality of connecting assemblies; the connecting assembly comprises a fixing rod fixedly connected to the blocking piece; the connecting pieces are connected to the adjacent fixing rods in a sliding mode, and first sliding grooves are formed in the connecting pieces; the locking blocks are connected to the adjacent connecting pieces in a sliding mode. The material suction barrel is clamped by the locking blocks to complete connection between the material suction barrel and the connecting piece, and the first sliding piece drives the locking blocks to release limiting of the material suction barrel at the same time, so that rapid mounting and dismounting of the device are achieved, and the time for overhauling and maintaining the device is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of screw pumps, in particular to an energy-saving screw pump for producing sodium sulfite. Background Art

[0002] A screw pump is a positive displacement pump that delivers liquids through one or more intermeshing screws (helical rotors). Screw pumps can provide a steady, continuous flow rate and excel in handling viscous liquids and liquids containing solid particles. They are widely used in various industrial fields, such as oil and gas extraction, chemicals, food processing, pharmaceuticals, and wastewater treatment. The main types of screw pumps include: single screw pumps, which consist of a screw and a pumping barrel and are typically used to deliver high-viscosity fluids; twin screw pumps, which consist of two intermeshing screws and are suitable for medium-viscosity fluids; three-screw pumps, which use three intermeshing screws and are often used in lubrication systems and fuel delivery because they provide smooth pressure and low pulsation.

[0003] Energy-saving progressive cavity pumps are progressive cavity pumps with optimized design, which are designed to improve energy efficiency, reduce operating costs while maintaining or improving performance. Such pumps usually use advanced materials and technologies to reduce energy consumption and maintenance costs.

[0004] In the production process of sodium sulfite, an energy-saving screw pump is needed to pump the sodium sulfite solution. During the pumping process, solid precipitation will precipitate from the sodium sulfite solution. Therefore, the energy-saving screw pump needs to be regularly maintained. During maintenance, the energy-saving screw pump needs to be disassembled to a certain extent. The pumping barrel and the suction barrel of the existing energy-saving single screw pump are fixed by several long bolts. This connection method requires a lot of time for the inspection and maintenance of the energy-saving screw pump, which makes the existing energy-saving screw pumps costly and inconvenient to use. Summary of the invention

[0005] In order to overcome the shortcomings mentioned in the above background technology, the present invention provides an energy-saving screw pump for sodium sulfite production.

[0006] The technical solution is: an energy-saving screw pump for sodium sulfite production, including: A suction cylinder, a driving device is provided on one side of the suction cylinder, a pumping cylinder is connected to the side of the suction cylinder away from the driving device, an output shaft of the driving device is connected to a transmission rod through a universal joint, the transmission rod is connected to a screw through a universal joint, the screw is located in the pumping cylinder, a blocking member is provided on the side of the pumping cylinder away from the suction cylinder, the blocking member is provided with a plurality of connecting components, the connecting components are used to connect the suction cylinder and the pumping cylinder, and the connecting components include: A fixing rod, fixedly connected to the blocking member; A connecting member, slidably connected to the adjacent fixing rod, the connecting member is slidably connected to the suction barrel, the connecting member is provided with a first sliding groove, and the fixing rod is located in the adjacent first sliding groove and slides; A locking block is slidably connected to the adjacent connecting piece, and the locking block limits the suction cylinder.

[0007] Furthermore, it also includes: A first fixed shell, all the connecting members are fixedly connected to a mounting frame, and the first fixed shell is fixedly connected to the mounting frames on all the connecting members; A first sliding member is slidably connected to the first fixed shell, a first spring is arranged between the first sliding member and the first fixed shell, the connecting member is provided with a second sliding groove, the locking block is located in an adjacent second sliding groove and slides, and all the second sliding grooves are connected to the first fixed shell.

[0008] Furthermore, it also includes: The limit block is slidably connected to the first fixed shell. The first sliding member is provided with a limit slot. The limit block limits the limit slot on the adjacent first sliding member. A second spring is provided between the limit block and the first fixed shell.

[0009] Furthermore, it also includes: A second fixed shell is fixedly connected to the mounting frame on all the connecting members, and all the first slide slots are connected to the second fixed shell; A first adjustment plate, slidably connected to the second fixed shell; The first threaded rod is threadedly connected to the second fixing shell and is rotatably connected to the first adjusting plate.

[0010] Furthermore, it also includes: The sealing member is arranged between the pumping cylinder and the blocking member. The blocking member is made of elastic material and has a hollow structure. The pumping cylinder and the blocking member squeeze the sealing member.

[0011] Furthermore, it also includes: A third fixed shell is fixedly connected to the blocking member, the third fixed shell is provided with a third slide groove and a fourth slide groove, and the third slide groove is communicated with the sealing member; A second sliding member, slidably connected to the third fixed shell; The second adjusting plate is slidably connected in the third fixed shell, and a third spring is arranged between the second adjusting plate and the second sliding member.

[0012] Furthermore, the pumping cylinder is provided with an air storage tank, the air storage tank is communicated with the fourth slide groove, and the air storage tank is filled with thermal expansion gas.

[0013] Furthermore, the inner side of the pumping barrel is made of wear-resistant material, and the outer side is made of heat-conductive material.

[0014] Furthermore, a plurality of fins are provided on the outer side of the pumping cylinder for heat dissipation.

[0015] Furthermore, it also includes: The second threaded rod is threadedly connected to the third fixed shell, and the second threaded rod is rotatably connected to the second adjustment plate.

[0016] The present invention has the following advantages: the present invention completes the connection between the suction cylinder and the connecting member by clamping the suction cylinder with a plurality of locking blocks, and enables the first sliding member to transmit the plurality of locking blocks to release the limit on the suction cylinder at the same time, thereby realizing the rapid installation and disassembly of the device and reducing the time used for the inspection and maintenance of the device.

[0017] The first sliding member is clamped by the limit block, thereby preventing the first sliding member from moving due to vibration, and further preventing the locking block from moving to cause the connecting member to separate from the suction cylinder, thereby ensuring the normal use of the device.

[0018] The temperature of the pumping barrel is monitored by the thermal expansion gas, so that when the pumping barrel expands, the filling in the seal is reduced, thereby avoiding excessive pressure on the seal by the pumping barrel and the blocking member, thereby avoiding excessive pressure on the seal and reducing its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a three-dimensional structural cross-sectional view of the suction cylinder and the pumping cylinder of the present invention; Figure 3 It is a three-dimensional structural schematic diagram of the connecting piece and the locking block of the present invention; Figure 4 It is a three-dimensional structural cross-sectional view of the first fixed shell and the first sliding member of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the first adjustment plate and the first threaded rod of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the second sliding member and the second adjustment plate of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the pumping cylinder and the air storage tank of the present invention.

[0020] The meanings of the reference numerals in the figure are as follows: 1: suction cylinder, 2: driving device, 3: pumping cylinder, 301: air storage tank, 4: transmission rod, 5: screw rod, 6: blocking member, 7: fixing rod, 8: connecting member, 801: first slide groove, 802: second slide groove, 9: locking block, 10: first fixed shell, 11: first sliding member, 12: limiting block, 13: second fixed shell, 14: first adjusting plate, 15: first threaded rod, 16: sealing member, 17: third fixed shell, 1701: third slide groove, 1702: fourth slide groove, 18: second sliding member, 19: second adjusting plate, 20: second threaded rod. DETAILED DESCRIPTION

[0021] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0022] An energy-saving screw pump for sodium sulfite production, such as Figure 1-Figure 3 As shown, it includes: a suction cylinder 1, a driving device 2 is arranged on one side of the suction cylinder 1, a pumping cylinder 3 is connected to the side of the suction cylinder 1 away from the driving device 2, the output shaft of the driving device 2 is connected to a transmission rod 4 through a universal joint, the transmission rod 4 is connected to a screw 5 through a universal joint, the screw 5 is located in the pumping cylinder 3, a blocking member 6 is arranged on the side of the pumping cylinder 3 away from the suction cylinder 1, the blocking member 6 is provided with a plurality of connecting components, the connecting components are used to connect the suction cylinder 1 and the pumping cylinder 3, the connecting components include: a fixing rod 7, fixed to the blocking member 6; a connecting member 8, slidably connected to the adjacent fixing rod 7, the connecting member 8 is slidably connected to the suction cylinder 1, the connecting member 8 is provided with a first slide groove 801, the fixing rod 7 is located in the adjacent first slide groove 801 and slides; a locking block 9, slidably connected to the adjacent connecting member 8, the locking block 9 limits the suction cylinder 1.

[0023] In the above scheme, the suction barrel 1 and the pumping barrel 3 are intended to be quickly connected to increase the speed of maintenance of the device. The upper side of the suction barrel 1 is the feed port, and the right side of the suction barrel 1 is the discharge port. The universal joints between the output shaft of the drive device 2 and the transmission rod 4 and the universal joints between the transmission rod 4 and the screw 5 are provided with protective sleeves, which are not shown in the figure. The suction barrel 1 and the blocking member 6 are sealed with the pumping barrel 3 to prevent leakage when the device transports materials. There are four fixing rods 7 shown in the figure, and they are evenly distributed in the circumferential direction. The four fixing rods 7 surround the outside of the pumping barrel 3. The suction barrel 1 is provided with four connection holes for inserting the connecting member 8. The left side of the locking block 9 is provided with an inclined surface, so that the suction barrel 1 and the connecting member 8 are more convenient to connect.

[0024] Further, such as Figure 3 and Figure 4 As shown, it also includes: a first fixed shell 10, all the connecting members 8 are fixedly connected to a mounting frame, and the first fixed shell 10 is fixedly connected to the mounting frame on all the connecting members 8; a first sliding member 11, which is slidably connected to the first fixed shell 10, a first spring is arranged between the first sliding member 11 and the first fixed shell 10, the connecting member 8 is provided with a second sliding groove 802, the locking block 9 is located in the adjacent second sliding groove 802 and slides, and all the second sliding grooves 802 are connected to the first fixed shell 10.

[0025] In the above scheme, it is intended to operate all the locking blocks 9 at the same time to improve the efficiency of the device during maintenance. The mounting frame on the four connecting members 8 is located on the right side of the suction barrel 1, the first fixed shell 10 is located on the upper side of the mounting frame, the first sliding member 11 includes a disc and a round rod, the part of the first fixed shell 10 located on the lower side of the disc part of the first sliding member 11 is filled with liquid, the second slide groove 802 is filled with liquid, and the first spring between the first sliding member 11 and the first fixed shell 10 is located on the upper layer of the disc part of the first sliding member 11.

[0026] Further, such as Figure 4 As shown, it also includes: a limit block 12, which is slidably connected to the first fixed shell 10, the first sliding member 11 is provided with a limit groove, the limit block 12 limits the limit groove on the adjacent first sliding member 11, and a second spring is provided between the limit block 12 and the first fixed shell 10.

[0027] In the above scheme, the purpose is to prevent the first sliding member 11 from vibrating and causing the locking block 9 to move, so as to ensure the normal use of the device. The limit block 12 includes a wedge block and a round rod, and the wedge block on the limit block 12 is provided with an upward inclined surface, so that the first sliding member 11 cannot move upward when it is limited by the limit block 12. The second spring between the limit block 12 and the first fixed shell 10 is used to insert the limit block 12 into the limit groove on the first sliding member 11 to keep the first sliding member 11 limited.

[0028] Further, such as Figure 3 and Figure 4 As shown, it also includes: a second fixed shell 13, a mounting frame fixedly connected to all connecting members 8, all first slide grooves 801 are connected to the second fixed shell 13; a first adjustment plate 14, slidingly connected in the second fixed shell 13; a first threaded rod 15, threadedly connected to the second fixed shell 13, and rotatably connected to the first adjustment plate 14.

[0029] In the above scheme, the locking block 9 is intended to increase the pressure on the suction cylinder 1 to ensure the sealing between the suction cylinder 1 and the blocking member 6 and the pumping cylinder 3. The first slide groove 801 and the second fixed shell 13 are filled with liquid for transmission between the first adjustment plate 14 and the connecting member 8. When the first threaded rod 15 is rotated, the first threaded rod 15 drives the first adjustment plate 14 to move.

[0030] Working process: When using the device, start the driving device 2, the output shaft of the driving device 2 drives the transmission rod 4 to rotate, the transmission rod 4 drives the screw 5 to rotate, the material enters from the feeding port of the suction barrel 1, and then enters the pumping barrel 3 from the discharge port, and the material is transported from left to right under the rotation of the screw 5. After use, turn off the driving device 2. When the device needs to be repaired and maintained, remove the device from the conveying system, and then rotate the first threaded rod 15. The first threaded rod 15 drives the first adjustment plate 14 to move downward, and the first adjustment plate 14 drives the four connecting members 8 to move downward by hydraulic means. The first sliding member 11 is moved upward, and the first sliding member 11 compresses the first spring between the first sliding member 11 and the first fixed shell 10, and the locking block 9 is driven by hydraulic means to move, so that the locking block 9 is retracted into the connecting member 8, and then the connecting member 8 can be separated from the suction barrel 1. When installing, just follow the above steps in reverse order.

[0031] Further, such as Figure 2 and Figure 6 As shown, it also includes: a sealing member 16, which is arranged between the pumping cylinder 3 and the blocking member 6. The blocking member 6 is made of elastic material and has a hollow structure. The pumping cylinder 3 and the blocking member 6 squeeze the sealing member 16.

[0032] In the above scheme, the sealing between the pumping cylinder 3 and the blocking member 6 is improved. The sealing member 16 can also be arranged at the connection between the pumping cylinder 3 and the suction cylinder 1, as well as other connections that need to be sealed.

[0033] Further, such as Figure 2 , Figure 6 and Figure 7 As shown, it also includes: a third fixed shell 17, fixed to the blocking member 6, the third fixed shell 17 is provided with a third slide groove 1701 and a fourth slide groove 1702, and the third slide groove 1701 is connected to the sealing member 16; a second sliding member 18 is slidably connected in the third fixed shell 17; a second adjustment plate 19 is slidably connected in the third fixed shell 17, and a third spring is provided between the second adjustment plate 19 and the second sliding member 18. The pumping barrel 3 is provided with an air storage tank 301, and the air storage tank 301 is connected to the fourth slide groove 1702, and the air storage tank 301 is filled with thermal expansion gas. The inner side of the pumping barrel 3 is made of wear-resistant material, and the outer side is made of heat-conducting material. The outer side of the pumping barrel 3 is provided with a plurality of fins for heat dissipation.

[0034] In the above scheme, the pressure on the seal 16 is adjusted to extend the service life of the seal 16. The third fixed shell 17 is located on the upper side of the blocking member 6, the third slide groove 1701 and the seal 16 are both filled with liquid, the second sliding member 18 includes a disc and a round rod, the round rod portion of the second sliding member 18 is slidably connected to the third slide groove 1701, the disc portion of the second sliding member 18 is slidably connected to the fourth slide groove 1702, the second adjustment plate 19 is located above the second sliding member 18, and the third spring between the two is initially in a compressed state, the gas storage tank 301 is located in the middle of the pumping barrel 3 to increase the thermal expansion of the gas in the gas storage tank 301 on the pumping barrel. In order to improve the accuracy of temperature monitoring, a plurality of gas storage tanks 301 can be provided on the pumping cylinder 3 to make the monitoring of thermal expansion gas more accurate, and selection can be made according to needs. The fourth slide groove 1702 is located at the lower side of the disc portion of the second sliding member 18 and is connected to the gas storage tank 301. The wear-resistant material on the inner side of the pumping cylinder 3 is used to increase its service life, and the heat-conductive material on the outer side of the pumping cylinder 3 is used to improve its heat dissipation performance, and the monitoring of the temperature of the pumping cylinder 3 by the thermal expansion gas, and the fins on the outer side of the pumping cylinder 3 are used to improve its heat dissipation performance and reduce the degree of thermal expansion of the pumping cylinder 3.

[0035] Further, such as Figure 6 As shown, it also includes: a second threaded rod 20, which is threadedly connected to the third fixed shell 17, and the second threaded rod 20 is rotatably connected to the second adjustment plate 19.

[0036] In the above scheme, the initial compression amount of the third spring between the second adjustment plate 19 and the second sliding member 18 is adjusted. When the second threaded rod 20 is rotated, the second adjustment plate 19 moves, thereby changing the compression amount of the third spring between the second adjustment plate 19 and the second sliding member 18.

[0037] Working process: When using the device, the second threaded rod 20 is rotated according to different sealing requirements, and the second threaded rod 20 drives the second adjustment plate 19 to move. When the sealing requirement is high, the second adjustment plate 19 moves downward, so that the initial compression of the third spring between the second adjustment plate 19 and the second sliding member 18 increases, thereby increasing the pressure of the third spring on the second sliding member 18, so that the second sliding member 18 transmits the pressure to the seal 16 by hydraulic means, thereby increasing the extrusion force between the pumping barrel 3 and the blocking member 6 and the seal 16. When the sealing requirement is low, the above operation process is opposite. During the operation of the device, the screw 5 and the pumping barrel 3 generate heat due to friction, the pumping barrel 3 expands and elongates, and the extrusion of the pumping barrel 3 on the seal 16 increases. At this time, the hot expanding gas in the air storage tank 301 expands and enters the fourth slide groove 1702, the air pressure in the fourth slide groove 1702 increases, and the upward force on the second sliding member 18 increases, so that the second sliding member 18 drives the seal 16 to contract, while ensuring the sealing and reducing the pressure on the seal 16.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. At the same time, in the drawings of the present invention, the fill pattern is only for distinguishing layers, without any other limitation.

Claims

1. An energy-saving screw pump for sodium sulfite production, characterized in that: Included are: A suction barrel (1), wherein a driving device (2) is disposed on one side of the suction barrel (1), a side of the suction barrel (1) away from the driving device (2) is connected to a pumping barrel (3), an output shaft of the driving device (2) is connected to a transmission rod (4) via a universal joint, the transmission rod (4) is connected to a screw rod (5) via a universal joint, the screw rod (5) is located in the pumping barrel (3), a blocking member (6) is disposed on the side of the pumping barrel (3) away from the suction barrel (1), the blocking member (6) is provided with a plurality of connecting components, the connecting components are used to connect the suction barrel (1) and the pumping barrel (3), and the connecting components include: A fixing rod (7) fixedly connected to the blocking member (6); A connecting member (8) is slidably connected to the adjacent fixed rod (7), the connecting member (8) is slidably connected to the suction cylinder (1), the connecting member (8) is provided with a first sliding groove (801), and the fixed rod (7) is located in the adjacent first sliding groove (801) and slides; A locking block (9) is slidably connected to the adjacent connecting piece (8), and the locking block (9) limits the position of the suction cylinder (1); A first fixed shell (10), all the connecting members (8) being fixedly connected to a mounting frame, the first fixed shell (10) being fixedly connected to the mounting frames on all the connecting members (8); A first sliding member (11) is slidably connected to the first fixed shell (10), a first spring is provided between the first sliding member (11) and the first fixed shell (10), the connecting member (8) is provided with a second sliding groove (802), the locking block (9) is located in an adjacent second sliding groove (802) and slides, and all the second sliding grooves (802) are connected to the first fixed shell (10); A second fixed shell (13) is fixedly connected to a mounting frame on all the connecting members (8), and all the first sliding grooves (801) are in communication with the second fixed shell (13); A first adjustment plate (14) slidably connected to the second fixed shell (13); The first threaded rod (15) is threadedly connected to the second fixed shell (13) and is rotatably connected to the first adjustment plate (14).

2. The energy-saving screw pump for sodium sulfite production according to claim 1, characterized in that: Also included are: A limit block (12) is slidably connected to the first fixed shell (10); the first sliding member (11) is provided with a limit slot; the limit block (12) limits the limit slot on the adjacent first sliding member (11); and a second spring is provided between the limit block (12) and the first fixed shell (10).

3. The energy-saving screw pump for sodium sulfite production according to claim 1, characterized in that: Also included are: The sealing member (16) is arranged between the pumping cylinder (3) and the blocking member (6); the blocking member (6) is made of an elastic material and has a hollow structure; the pumping cylinder (3) and the blocking member (6) squeeze the sealing member (16).

4. The energy-saving screw pump for sodium sulfite production according to claim 3, characterized in that: Also included are: a third fixed shell (17) fixedly connected to the blocking member (6), the third fixed shell (17) being provided with a third slide groove (1701) and a fourth slide groove (1702), the third slide groove (1701) being in communication with the sealing member (16); A second sliding member (18) slidably connected to the third fixed shell (17); The second adjustment plate (19) is slidably connected in the third fixed shell (17), and a third spring is provided between the second adjustment plate (19) and the second sliding member (18).

5. The energy-saving screw pump for sodium sulfite production according to claim 4, characterized in that: The pumping cylinder (3) is provided with an air storage tank (301), the air storage tank (301) is in communication with the fourth slide groove (1702), and the air storage tank (301) is filled with thermal expansion gas.

6. The energy-saving screw pump for sodium sulfite production according to claim 5, characterized in that: The inner side of the pumping barrel (3) is made of wear-resistant material, and the outer side is made of heat-conducting material.

7. The energy-saving screw pump for sodium sulfite production according to claim 5, characterized in that: The outer side of the pumping cylinder (3) is provided with a plurality of fins for heat dissipation.

8. The energy-saving screw pump for sodium sulfite production according to claim 4, characterized in that: Also included are: The second threaded rod (20) is threadably connected to the third fixed shell (17), and the second threaded rod (20) is rotatably connected to the second adjustment plate (19).

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