Novel horizontal screw pump device

Abstract

The utility model relates to a novel horizontal screw pump device which comprises a pull rod, a stator, a feeding body and a bearing seat, the feeding body is arranged in the horizontal 0-degree direction, the two ends of the feeding body are connected with the stator and the bearing seat respectively, the bearing seat is connected with the feeding body through a connecting bolt, the pull rod is installed on the stator, and the bearing seat is installed on the pull rod. One end of the pull rod is connected with the feeding body through a bolt, and the other end of the pull rod is connected with the discharging body through a bolt. By adopting the mounting mode of the screw pump, a medium can be conveniently conveyed to enter the suction inlet of the screw pump, and the pressure and the quantity of the medium at the suction inlet of the screw pump are met, so that the stable operation of the screw pump is realized, the damage of a stator, a rotor and a mechanical seal of the screw pump is reduced, and meanwhile, the material quantity, the working difficulty and the workload of piping at the suction section are reduced. Through practical application, the screw pump is good in effect.

Description

Technical Field

[0001] The utility model relates to the field of conveying equipment installation, in particular to the field of horizontal screw pumps, and specifically refers to a novel horizontal screw pump device. Background Art

[0002] During the operation of conveying medium, the horizontal screw pump can effectively avoid the screw pump from running idle or causing dry grinding damage to the stator, rotor and seal due to the influence of the liquid level of the front medium at the screw pump suction port.

[0003] The general installation method of conventional horizontal screw pumps. In order to meet the normal feeding of production, the liquid level of the front-end medium needs to be much higher than the height of the inverted "U" bend of the screw pump suction port, otherwise the conveying medium will not be able to reach the requirements of the pump suction port. As a result, the screw pump cannot operate stably, causing damage to the stator, rotor, and seal of the screw pump, and even affecting the stable operation of subsequent process equipment, such as centrifugal dehydration units. This technology is to provide a new installation method for screw pumps, which uses the screw pump suction port to rotate 90° from the vertical direction to the horizontal direction for installation, so as to facilitate the conveying medium to enter the suction port of the screw pump, meet the pressure and quantity of the medium at the suction port of the screw pump, thereby achieving stable operation of the screw pump and reducing damage to the stator, rotor, and mechanical seal of the screw pump. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a new type of horizontal screw pump device which is simple to install, stable in operation and has a wide range of applications.

[0005] In order to achieve the above-mentioned purpose, the novel horizontal screw pump device of the utility model is as follows:

[0006] The main feature of this new horizontal screw pump device is that the device includes a pull rod, a stator, a feed body and a bearing seat. The feed body is in a horizontal 0° position. The two ends of the feed body are respectively connected to the stator and the bearing seat. The bearing seat and the feed body are connected by connecting bolts. The pull rod is installed on the stator. One end of the pull rod is connected to the feed body by a bolt, and the other end is connected to the discharge body by a bolt.

[0007] Preferably, the feed body and the front-end medium output port are installed on the same horizontal plane.

[0008] Preferably, the feed body is in a vertical direction when not installed, and is rotated 90° to a horizontal 0° direction when installed, facing the front material discharge port, and is installed with the front material discharge port piping.

[0009] Preferably, the device also includes a screw shaft, a universal joint, a bearing and a drive shaft, the screw shaft is installed inside the stator, the universal joint is installed inside the feed body, the bearing and the drive shaft are connected, and the bearing and the drive shaft are installed inside the bearing seat, one end of the universal joint is connected to the screw shaft, and the other end is connected to the bearing seat.

[0010] Preferably, the device further comprises a stuffing seat and a stuffing gland, wherein the stuffing seat is connected between the feed body and the bearing seat, and the stuffing gland is mounted on the stuffing seat.

[0011] Preferably, the device also includes a discharge body, a bearing cover, a coupling, a base and a motor, the discharge body is installed at one end of the stator, the bearing cover is installed at one end of the bearing seat, the coupling is connected to the bearing cover, the motor is connected to the coupling, and the discharge body, filler seat, bearing seat and motor are all installed on the base.

[0012] The screw pump installation method of this utility model facilitates the conveying medium to enter the screw pump's suction port, meets the pressure and quantity of the medium at the screw pump's suction port, thereby achieving stable operation of the screw pump and reducing damage to the screw pump's stator, rotor, and mechanical seal. It also reduces the amount of material, difficulty, and workload required for suction section piping. This ensures the long-term safe operation of the screw pump, and has been proven effective in practical application. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a three-dimensional diagram of the novel horizontal screw pump device of the present utility model.

[0014] Figure 2 It is a side sectional view of the novel horizontal screw pump device of the utility model.

[0015] Figure 3 This is an exploded diagram of the novel horizontal screw pump device of the present utility model.

[0016] Reference numerals:

[0017] 1 Discharge body

[0018] 2 tie rods

[0019] 3 Stator

[0020] 4 screw shaft

[0021] 5 Universal joint

[0022] 6 Feed body

[0023] 7 Connecting shaft

[0024] 8 Packing seat

[0025] 9 Packing gland

[0026] 10 bearing seat

[0027] 11 bearings

[0028] 12 drive shaft

[0029] 13 bearing cap

[0030] 14 Coupling

[0031] 15 base

[0032] 16 motors DETAILED DESCRIPTION

[0033] In order to more clearly describe the technical content of the present invention, further description will be given below in conjunction with specific embodiments.

[0034] The new horizontal screw pump device of the present invention includes a tie rod 2, a stator 3, a feed body 6 and a bearing seat 10. The feed body 6 is in a horizontal 0° position. The two ends of the feed body 6 are respectively connected to the stator 3 and the bearing seat 10. The bearing seat 10 is connected to the feed body 6 by connecting bolts. The tie rod 2 is installed on the stator 3. One end of the tie rod 2 is connected to the feed body 6 by a bolt, and the other end is connected to the discharge body by a bolt.

[0035] As a preferred embodiment of the present invention, the feed body 6 and the output port of the front-end medium are installed on the same horizontal plane.

[0036] As a preferred embodiment of the present invention, the feed body 6 is in a vertical direction when not installed, and is rotated 90° to a horizontal 0° direction when installed, facing the front material discharge port, and is installed with the front material discharge port piping.

[0037] As a preferred embodiment of the present invention, the device also includes a screw shaft 4, a universal joint 5, a bearing 11 and a drive shaft 12, the screw shaft 4 is installed inside the stator 3, the universal joint 5 is installed inside the feed body 6, the bearing 11 and the drive shaft 12 are connected, and the bearing 11 and the drive shaft 12 are installed inside the bearing seat 10, one end of the universal joint 5 is connected to the screw shaft 4, and the other end is connected to the bearing seat 10.

[0038] As a preferred embodiment of the present invention, the device further includes a stuffing seat 8 and a stuffing gland 9 . The stuffing seat 8 is connected between the feed body 6 and the bearing seat 10 , and the stuffing gland 9 is installed on the stuffing seat 8 .

[0039] As a preferred embodiment of the present utility model, the device also includes a discharge body 1, a bearing cover 13, a coupling 14, a base 15 and a motor 16. The discharge body 1 is installed at one end of the stator 3, the bearing cover 13 is installed at one end of the bearing seat 10, the coupling 14 is connected to the bearing cover 13, the motor 16 is connected to the coupling 14, and the discharge body 1, the stuffing seat 8, the bearing seat 10 and the motor 16 are all installed on the base 15.

[0040] The purposes of this utility model are as follows:

[0041] 1) Increase the pressure and quantity of the medium at the suction port of the screw pump to meet the process requirements of the medium at the suction port when the screw pump is running stably;

[0042] 2) Reduce the impact of the front-end medium liquid level height and reduce the damage to the stator 3, rotor and seal caused by idling and dry grinding of the screw pump;

[0043] 3) Reduce the piping materials, installation difficulty and engineering workload of the screw pump suction port;

[0044] 4) It ensures the stable operation of the screw pump and provides a guarantee for the stable operation of subsequent process equipment.

[0045] In the specific implementation manner of the present invention, the new screw pump installation method does not require the customization of a special screw pump. It is only necessary to disassemble the suction section of the commonly used horizontal screw pump from the stator section and the bearing seat section, rotate the suction section 90° toward the front material discharge port, re-tighten the disassembled part of the screw pump, and then install it with the pipe at the front material discharge port.

[0046] The utility model relates to a new installation method for a horizontal screw pump, which rotates the screw pump suction port 90° from the vertical direction to the horizontal direction of 0°, so that the screw pump suction port and the front-end medium output port are installed on the same horizontal plane. The use of the horizontal screw pump installation method of the utility model solves the problem of conventional horizontal screw pump installation methods, in which the front-end conveying medium needs to overcome the high pressure energy of the inverted "U" bend of the screw pump suction port before entering the screw pump suction port. This reduces the amount of materials, difficulty, and workload for piping the suction port, and effectively protects the screw pump from damage to the stator, rotor, and seal caused by idling and dry grinding.

[0047] This technical solution requires determining four parts to be disassembled: the pull rod 2, the stator 3, the feed body 6, and the connecting bolts between the bearing seat 10 and the feed body 6.

[0048] First, the screw pump is transported to the installation site. According to the position of the front-end medium discharge port, the horizontal 0° position to which the feed body 6 flange needs to be rotated is determined (determine left rotation or right rotation when viewed from the direction of the motor 16).

[0049] Next, remove the bolts at both ends of the pull rod 2 and the connecting bolts between the feed body 6 and the bearing seat 10.

[0050] Again, use a copper rod to gently knock the stator 3 and the feed body 6 toward the outlet so that the feed body 6 can easily rotate left and right.

[0051] Again, rotate the flange of the feed body 6 to the above-determined position, and tighten the connecting bolts between the feed body 6 and the bearing seat 10 and the bolts at both ends of the pull rod 2 in sequence.

[0052] Finally, pipes are arranged according to the position of the front-end medium discharge port and the position of the screw pump suction port, and the pump feet are installed.

[0053] The debugging steps are as follows:

[0054] Open the inlet valve of the screw pump, close the outlet valve, fill the screw pump with liquid, start the motor 16 to determine the normal operation direction, start the motor 16, wait for the outlet pressure to rise, slowly open the outlet valve, and put it into operation after testing according to the debugging items.

[0055] This technology reduces the static pressure difference caused by the inverted U-bend required to overcome when the screw pump draws in the conveying medium. This allows the conveying medium to enter the screw pump's intake more easily, reducing the pump's power. It also reduces the piping material, installation complexity, and engineering costs associated with the screw pump's intake. It also provides a wider range of liquid level control within the front-end medium tank, unaffected by the height of the inverted U-bend. This combination ensures stable operation of the screw pump and reduces spare parts and labor costs associated with failures. This technology is more conducive to the stable operation of horizontal screw pumps, reducing piping material and labor costs during installation and reducing repair costs associated with screw pump failures, including spare parts and labor. This ensures the long-term safe operation of the screw pump, and has proven effective in practical application.

[0056] The specific implementation scheme of this embodiment can be found in the relevant descriptions in the above embodiments and will not be repeated here.

[0057] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.

[0058] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" is at least two.

[0059] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0060] The screw pump installation method of this utility model facilitates the conveying medium to enter the screw pump's suction port, meeting the pressure and quantity of the medium at the screw pump's suction port, thereby achieving stable operation of the screw pump and reducing damage to the screw pump's stator, rotor, and mechanical seal. It also reduces the amount of material required for suction section piping, as well as the difficulty and workload. This ensures the long-term safe operation of the screw pump, and has been proven effective in practical application.

[0061] In this specification, the present invention has been described with reference to specific embodiments thereof. However, it will be apparent that various modifications and variations may be made without departing from the spirit and scope of the present invention. Accordingly, the specification and drawings are to be regarded as illustrative rather than restrictive.

Claims

1. A novel horizontal screw pump device, characterized in that: The device includes a pull rod, a stator, a feed body and a bearing seat. The feed body is in a horizontal 0° position. The two ends of the feed body are respectively connected to the stator and the bearing seat. The bearing seat and the feed body are connected by connecting bolts. The pull rod is installed on the stator. One end of the pull rod is connected to the feed body by a bolt, and the other end is connected to the discharge body by a bolt.

2. The novel horizontal screw pump device according to claim 1 is characterized in that: The feed body and the output port of the front-end medium are installed on the same horizontal plane.

3. The novel horizontal screw pump device according to claim 1 is characterized in that: The feed body is in a vertical direction when not installed, and is rotated 90° to a horizontal 0° direction when installed, facing the front material discharge port, and is installed with the front material discharge port piping.

4. The novel horizontal screw pump device according to claim 1 is characterized in that: The device also includes a screw shaft, a universal joint, a bearing and a drive shaft. The screw shaft is installed inside the stator, the universal joint is installed inside the feed body, the bearing and the drive shaft are connected, and the bearing and the drive shaft are installed inside the bearing seat. One end of the universal joint is connected to the screw shaft, and the other end is connected to the bearing seat.

5. The novel horizontal screw pump device according to claim 1 is characterized in that: The device further comprises a stuffing seat and a stuffing gland. The stuffing seat is connected between the feed body and the bearing seat, and the stuffing gland is installed on the stuffing seat.

6. The novel horizontal screw pump device according to claim 1 is characterized in that: The device also includes a discharge body, a bearing cover, a coupling, a base and a motor. The discharge body is installed at one end of the stator, the bearing cover is installed at one end of the bearing seat, the coupling is connected to the bearing cover, the motor is connected to the coupling, and the discharge body, filler seat, bearing seat and motor are all installed on the base.

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