Device and process for installing rear protection plate of slurry pump

Abstract

The invention relates to the technical field of slurry pumps, and discloses a device for mounting a rear protection plate of a slurry pump and a mounting process. The device comprises an extension shaft body, the extension shaft body is of a tubular structure and is connected to a pump shaft of the slurry pump in a sleeving mode, the length of the extension shaft body is larger than the thickness of a rear protection plate of the slurry pump so that the extension shaft body can protrude out of the rear protection plate, the extension shaft body is used for enabling the rear protection plate of the slurry pump to slide in through the extension shaft body, and connection of the rear protection plate and a pump shell is completed. According to the scheme, the pump shaft is lengthened through the lengthened shaft body, so that the rear protection plate of the slurry pump slides in through the lengthened shaft body, the situation that a sealing ring and a sealing gasket are prone to falling off and shifting in the alignment process is avoided, and due to the fact that the length of the lengthened shaft body is larger than the thickness of the rear protection plate of the slurry pump, the service life is prolonged. The inner wall of a hole of the rear protection plate of the slurry pump is in contact with the outer wall of the extension shaft body in the installation process, and the risk that the rear protection plate of the slurry pump falls off in the installation process is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of slurry pumps, and in particular to a device and an installation process for installing a rear guard plate of a slurry pump. Background Art

[0002] Slurry pumps are a type of equipment commonly used in various industries. The characteristic of this type of equipment is that the flow parts need to be replaced regularly. Among them, slurry pumps with metal flow parts are the most difficult to repair and replace. The flow parts of this type of slurry pump are mainly composed of a front guard plate, a rear guard plate, a sleeve, etc. The rear guard plate of the slurry pump is fixed to the pump casing by four bolts, and a static seal with the pump casing is achieved through a sealing ring and a sealing gasket to prevent the slurry from flowing out. During the installation process, the rear guard plate is difficult to install because the protruding length of the pump casing is greater than the length of the pump shaft. In addition, the rear guard plate of the slurry pump is heavy, and it is laborious and dangerous to carry and install manually, so it usually needs to be hoisted. However, there is no fishing ear on the rear guard plate, and it is difficult to take the steel rope during the hoisting process. After the shaft hole of the rear guard plate is inserted into the pump shaft, the position of the rear guard plate needs to be manually moved to align with the bolt hole, which makes it easy for the sealing ring and the sealing gasket to fall off and shift during the alignment process, resulting in rework, and there is a risk of the rear guard plate falling off during this process.

[0003] Therefore, how to safely and effectively complete the installation of the rear guard plate of the slurry pump is an urgent problem to be solved.

[0004] Invention content is compatible In view of this, the present invention provides a device and an installation process for installing a rear guard plate of a slurry pump, so as to solve the technical problem that the rear guard plate of the slurry pump is difficult to install.

[0005] In the first aspect, the present invention provides a device for installing a rear guard plate of a slurry pump, the device comprising: an extended shaft body, which is a tubular structure and is sleeved on the pump shaft of the slurry pump. The length of the extended shaft body is greater than the thickness of the rear guard plate of the slurry pump so that the extended shaft body protrudes from the rear guard plate. The extended shaft body is used to allow the rear guard plate of the slurry pump to slide in through the extended shaft body, and the connection between the rear guard plate and the pump casing is completed.

[0006] In combination with the first aspect, in a possible implementation of the first aspect, the inner diameter of the extended shaft body is matched with the outer diameter of the pump shaft, and the outer diameter of the extended shaft body is matched with the inner diameter of the mounting hole of the rear guard plate.

[0007] In combination with the first aspect, in a possible implementation of the first aspect, an inner wall of the extended shaft body is connected to the pump shaft so that the extended shaft body is sleeved on the pump shaft.

[0008] In combination with the first aspect, in a possible implementation manner of the first aspect, an inner wall of the extended shaft body has a thread structure corresponding to an outer diameter of the pump shaft.

[0009] In combination with the first aspect, in a possible implementation of the first aspect, an end of the extended shaft body close to the rear guard plate has a fastening mechanism, and the fastening mechanism is used to tighten the pump shaft.

[0010] In combination with the first aspect, in a possible implementation of the first aspect, one end of the extended shaft body close to the pump housing has a snap structure, and the snap structure is used to snap with the pump housing so that the extended shaft body is sleeved on the pump shaft.

[0011] In combination with the first aspect, in a possible implementation of the first aspect, the device also includes: an impeller, the impeller having a protrusion and a bottom, the inner diameter of the protrusion is adapted to the outer diameter of the pump shaft, and the outer diameter of the bottom is adapted to the inner diameter of the rear guard plate, so that after the extended shaft body completes the installation of the guard plate and is withdrawn, the sealing of the rear guard plate is completed by the impeller.

[0012] In combination with the first aspect, in a possible implementation manner of the first aspect, an inner diameter of the protrusion has a thread structure corresponding to an outer diameter of the pump shaft.

[0013] In the second aspect, the present invention provides an installation process for a rear guard plate of a slurry pump, which is applied to a device for installing a rear guard plate of a slurry pump according to the above-mentioned first aspect or any corresponding embodiment. The installation process includes: sleeved an extended shaft body on the pump shaft of the slurry pump; sliding the rear guard plate of the slurry pump along the extended shaft body, and completing the connection between the bolts of the rear guard plate and the pump casing.

[0014] In combination with the second aspect, in a possible implementation of the second aspect, the device for installing the rear guard plate of a slurry pump applied to the above-mentioned first aspect or any corresponding embodiment thereof, the installation process also includes: after the connection between the bolts of the rear guard plate and the pump casing is completed, withdrawing the extended shaft body; and completing the sealing of the rear guard plate by the impeller.

[0015] The technical solution of the present invention has the following advantages: The present invention provides a device and an installation process for a rear guard plate of a slurry pump. The device sleeves a tubular extended shaft body on the pump shaft of the slurry pump. Since the length of the extended shaft body is greater than the thickness of the rear guard plate of the slurry pump, the length of the pump shaft is extended by the extended shaft body, so that the rear guard plate of the slurry pump slides in through the extended shaft body. The position of the rear guard plate is manually moved to align with the bolt hole without being affected by the thickness of the pump casing, thereby preventing the sealing ring and the sealing gasket from falling off and shifting during the alignment process. Moreover, since the length of the extended shaft body is greater than the thickness of the rear guard plate of the slurry pump, the inner wall of the hole of the rear guard plate of the slurry pump contacts the outer wall of the extended shaft body during the installation process, thereby avoiding the risk of the rear guard plate of the slurry pump falling off during the installation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of a connection structure between a slurry pump and an extended shaft body provided according to an embodiment of the present invention; Figure 2 is a structural schematic diagram of an impeller provided according to an embodiment of the present invention; Figure 3 The present invention is a schematic flow chart of a process for installing a rear guard plate of a slurry pump provided in accordance with an embodiment of the present invention.

[0018] Description of reference numerals: 1-slurry pump; 11-pump casing; 12-rear guard plate; 2-extended shaft; 3-impeller; 31 - protrusion; 32 - bottom. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0020] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0021] It should be noted that, in the description of the present disclosure, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0022] In addition, the words "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0023] It should also be noted that in the description of the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0024] All terms used in the present disclosure have the same meanings as those understood by those of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, for example, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined as such herein.

[0025] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0026] like Figure 1 As shown, according to an embodiment of the present invention, a device for installing a rear guard plate of a slurry pump is provided, the device comprising: an extended shaft body 2, the extended shaft body 2 being a tubular structure, sleeved on the pump shaft of the slurry pump 1, the length of the extended shaft body 2 being greater than the thickness of the rear guard plate 12 of the slurry pump 1, so that the extended shaft body 2 protrudes from the rear guard plate 12, the extended shaft body 2 is used to allow the rear guard plate 12 of the slurry pump to slide in through the extended shaft body, and the rear guard plate 12 is connected to the pump casing 11 after completion.

[0027] Specifically, the extended shaft body 2 sleeved on the pump shaft of the slurry pump 1 is a tubular structure, which is used to extend the length of the pump shaft that is shorter than the protruding length of the pump casing through the delay shaft body 2, so that the length of the extended shaft body 2 is greater than the thickness of the rear guard plate 12 of the slurry pump 1, so that after the hole of the rear guard plate, that is, the shaft hole, passes through the delay shaft body 2, it is not affected by the pump casing 11 of the slurry pump 1 during the process of manually moving the position of the rear guard plate to align with the bolt hole, and after aligning the bolt hole, since the inner wall of the hole of the rear guard plate 12 of the slurry pump 1 slides along the outer wall of the extended shaft body 2 during the process of sliding the rear guard plate 12 of the slurry pump 1 toward the pump casing 11, the position of the bolt hole after alignment will not change, thereby completing the connection between the rear guard plate 12 of the slurry pump 1 and the pump casing 11.

[0028] The present invention provides a device and an installation process for a rear guard plate of a slurry pump. The device sleeves a tubular extended shaft body on the pump shaft of the slurry pump. Since the length of the extended shaft body is greater than the thickness of the rear guard plate of the slurry pump, the length of the pump shaft is extended by the extended shaft body, so that the rear guard plate of the slurry pump slides in through the extended shaft body. The position of the rear guard plate is manually moved to align with the bolt hole without being affected by the thickness of the pump casing, thereby preventing the sealing ring and the sealing gasket from falling off and shifting during the alignment process. Moreover, since the length of the extended shaft body is greater than the thickness of the rear guard plate of the slurry pump, the inner wall of the hole of the rear guard plate of the slurry pump contacts the outer wall of the extended shaft body during the installation process, thereby avoiding the risk of the rear guard plate of the slurry pump falling off during the installation process.

[0029] In an optional implementation, the inner diameter of the extended shaft body 2 is matched with the outer diameter of the pump shaft, and the outer diameter of the extended shaft body 2 is matched with the inner diameter of the mounting hole of the rear guard plate 12 .

[0030] Specifically, the extended shaft body 2 is a metal pipe, such as a steel pipe, a copper pipe, an aluminum pipe or other metal pipes, and is usually made from a steel pipe, which is not specifically limited in this embodiment.

[0031] Specifically, the inner diameter of the extended shaft body 2 is adapted to the outer diameter of the pump shaft, which means that the inner diameter of the extended shaft body 2 is slightly larger than the outer diameter of the pump body. Generally, the inner diameter of the extended shaft body 2 is in close contact with the outer diameter of the pump shaft, and the gap is smaller than a preset size. The preset size can be 1 mm, 2 mm or other sizes, and can be set according to actual working conditions. This embodiment does not make any specific limitations on this.

[0032] Specifically, the outer diameter of the extended shaft body 2 is adapted to the inner diameter of the mounting hole of the rear guard plate 12, which means that the outer diameter of the extended shaft body 2 is slightly smaller than the inner diameter of the mounting hole of the rear guard plate 12 of the slurry pump 1. Generally, the outer diameter of the extended shaft body 2 is slightly smaller than the inner diameter of the mounting hole of the rear guard plate 12 of the slurry pump 1, and the gap is smaller than the preset size.

[0033] In an optional embodiment, the inner wall of the extended shaft body 2 is connected to the pump shaft, so that the extended shaft body 2 is sleeved on the pump shaft.

[0034] Specifically, the inner wall of the extended shaft body 2 is connected to the pump shaft including: the inner wall of the extended shaft body 2 is threadedly connected via a threaded structure corresponding to the outer diameter of the pump shaft; or, the end of the extended shaft body 2 close to the rear guard plate 12 has a fastening mechanism, which is used to tighten the pump shaft to achieve a clamping connection.

[0035] In an optional embodiment, the inner wall of the extended shaft body 2 has a thread structure corresponding to the outer diameter of the pump shaft.

[0036] Specifically, when the extended shaft body 2 is sleeved on the pump shaft of the slurry pump 1, the inner wall of the extended shaft body 2 has a threaded structure corresponding to the outer diameter of the pump shaft and is tightened, thereby achieving the extension shaft body 2 being sleeved on the pump shaft and the length of the pump shaft of the slurry pump 1 being extended by the extended shaft body 2.

[0037] It should be understood that after the rear guard plate 12 of the slurry pump 1 slides into the installation position through the extended shaft body 2, that is, after the four bolts of the rear guard plate 12 of the slurry pump 1 enter the corresponding bolt holes of the pump casing 11, the inner wall of the extended shaft body 2 has a threaded structure corresponding to the outer diameter of the pump shaft and is unscrewed, thereby completing the process of installing and removing the rear guard plate 12 after the extended shaft body 2 is completed in the subsequent embodiments.

[0038] In an optional embodiment, one end of the extended shaft body 2 close to the rear guard plate 12 has a fastening mechanism, and the fastening mechanism is used to tighten the pump shaft.

[0039] Specifically, when the extended shaft body 2 is sleeved on the pump shaft of the slurry pump 1, the fastening mechanism at one end of the extended shaft body 2 close to the rear guard plate 12 is used to tighten the pump shaft, thereby achieving the extension shaft body 2 being sleeved on the pump shaft and extending the length of the pump shaft of the slurry pump 1 by the extended shaft body 2.

[0040] It should be understood that after the rear guard plate 12 of the slurry pump 1 slides into the installation position through the extended shaft body 2, that is, after the four bolts of the rear guard plate 12 of the slurry pump 1 enter the corresponding bolt holes of the pump casing 11, the fastening mechanism at one end of the extended shaft body 2 close to the rear guard plate 12 is used to loosen the clamp on the pump shaft, thereby pulling the extended shaft body 2 out of the hole of the rear guard plate 12 of the slurry pump 1, thereby completing the process of installing and withdrawing the rear guard plate 12 after the extended shaft body 2 is completed in the subsequent embodiments.

[0041] In an optional embodiment, one end of the extended shaft body 2 close to the pump housing 11 has a snap-fit ​​structure, and the snap-fit ​​structure is used to snap-fit ​​with the pump housing 11 so that the extended shaft body 2 is sleeved on the pump shaft.

[0042] Specifically, when the extended shaft body 2 is sleeved on the pump shaft of the slurry pump 1, the end of the extended shaft body 2 close to the pump housing 11 has a snap-fit ​​structure to achieve a snap-fit ​​connection between the pump housing 11 and the snap-fit ​​structure, thereby completing the fixation of the extended shaft body 2, thereby achieving the extension shaft body 2 being sleeved on the pump shaft, and the length of the pump shaft of the slurry pump 1 is extended by the extended shaft body 2.

[0043] It should be understood that after the rear guard plate 12 of the slurry pump 1 slides into the installation position through the extended shaft body 2, that is, after the four bolts of the rear guard plate 12 of the slurry pump 1 enter the corresponding bolt holes of the pump casing 11, the snap-in structure at the end of the extended shaft body 2 close to the pump casing 11 is used to release the snap-in connection between the pump casing 11 and the snap-in structure, release the fixation of the extended shaft body 2, and thereby pull the extended shaft body 2 out of the hole of the rear guard plate 12 of the slurry pump 1, thereby completing the process of installing and withdrawing the rear guard plate 12 after the extended shaft body 2 is completed in the subsequent embodiments.

[0044] In an alternative embodiment, Figure 2 As shown, the device also includes: an impeller 3, the impeller 3 has a protrusion 31 and a bottom 32, the inner diameter of the protrusion 31 is adapted to the outer diameter of the pump shaft, and the outer diameter of the bottom 32 is adapted to the inner diameter of the rear guard plate 12, so that after the extended shaft body 2 is installed and withdrawn after the guard plate 12 is completed, the sealing of the rear guard plate 12 is completed by the impeller 3.

[0045] Specifically, the inner diameter of the protrusion 31 is adapted to the outer diameter of the pump shaft, which means that the inner diameter of the protrusion 31 is slightly larger than the outer diameter of the pump shaft. Generally, the inner diameter of the protrusion 31 is in close contact with the outer diameter of the pump shaft, and the gap is smaller than a preset size. The preset size can be 1 mm, 2 mm or other sizes, which can be set according to actual working conditions. This embodiment does not make any specific limitation on this.

[0046] Specifically, the outer diameter of the bottom 32 is adapted to the inner diameter of the rear guard plate 12, which means that the outer diameter of the bottom 32 is slightly larger than the inner diameter of the rear guard plate 12. Generally, the outer diameter of the bottom 32 is in close contact with the inner diameter of the rear guard plate 12, and the gap is smaller than a preset size.

[0047] It should be understood that the impeller 3 includes but is not limited to Figure 2 The style shown, Figure 2 The structure of the impeller 3 is disclosed only as an example. It is sufficient if the impeller 3 has a protrusion 31 and a bottom 32 and the sealing of the rear guard plate 12 is completed by the protrusion 31 and the bottom 32 of the impeller 3 .

[0048] The present invention provides a device and an installation process for a rear guard plate of a slurry pump. The device uses an impeller with a protrusion and a bottom. Since the inner diameter of the protrusion of the impeller is matched with the outer diameter of the pump shaft, and the outer diameter of the bottom is matched with the inner diameter of the rear guard plate, the protrusion of the impeller is matched with the notch corresponding to the pump shaft of the slurry pump, and the bottom of the impeller is matched with the notch corresponding to the rear guard plate of the slurry pump, thereby utilizing the sealing of the rear guard plate after the impeller is completed to further prevent the slurry from flowing out.

[0049] In an optional embodiment, the inner diameter of the protrusion 31 has a thread structure corresponding to the outer diameter of the pump shaft.

[0050] Specifically, during the process of sealing the rear guard plate 12 after the impeller 3 is completed, the inner diameter of the protrusion 31 has a threaded structure corresponding to the outer diameter of the pump shaft, so as to achieve the sealing of the rear guard plate 12 by the impeller 3.

[0051] According to an embodiment of the present invention, an installation process embodiment of a rear guard plate of a slurry pump is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0052] This embodiment provides a slurry pump rear guard plate installation process, such as Figure 3 As shown, the installation process includes the following steps: S101, sleeve the extended shaft onto the pump shaft of the slurry pump.

[0053] Specifically, the methods of sleeve-connecting the extended shaft body onto the pump shaft of the slurry pump include: utilizing the inner wall of the extended shaft body to achieve a threaded connection through a threaded structure corresponding to the outer diameter of the pump shaft; or utilizing a fastening mechanism provided at one end of the extended shaft body close to the rear guard plate, the fastening mechanism being used to clamp the pump shaft to achieve a snap-on connection; or utilizing a snap-on structure provided at one end of the extended shaft body close to the pump casing to achieve a snap-on connection, thereby fixing the extended shaft body.

[0054] S102, slide the rear guard plate of the slurry pump along the extended shaft, and complete the connection between the bolts of the rear guard plate and the pump casing.

[0055] Specifically, sliding the rear guard plate of the slurry pump along the extended shaft body and completing the connection between the bolts of the rear guard plate and the pump casing means that the extended shaft body is sleeved on the pump shaft of the slurry pump, so that the length of the pump shaft shorter than the protruding length of the pump casing is extended by the delayed shaft body, so that the length of the extended shaft body is greater than the thickness of the rear guard plate of the slurry pump, so that after the hole of the rear guard plate, that is, the shaft hole, passes through the delayed shaft body, the position of the rear guard plate is not affected by the pump casing of the slurry pump during the process of manually moving the position of the rear guard plate to align with the bolt hole, and after aligning the bolt hole, since the inner wall of the hole of the rear guard plate of the slurry pump slides along the outer wall of the extended shaft body during the process of the rear guard plate of the slurry pump sliding toward the pump casing, the position of the bolt hole after alignment will not change, thereby completing the connection between the rear guard plate of the slurry pump and the pump casing.

[0056] The present invention provides a device and an installation process for a rear guard plate of a slurry pump. The installation process involves sleeve-connecting an extended shaft body on the pump shaft of the slurry pump. Since the length of the extended shaft body is greater than the thickness of the rear guard plate of the slurry pump, the length of the pump shaft is extended by utilizing the extended shaft body, so that the rear guard plate of the slurry pump slides in through the extended shaft body. The process of manually moving the position of the rear guard plate to align with the bolt hole is not affected by the thickness of the pump casing, thus preventing the sealing ring and the sealing gasket from falling off and shifting during the alignment process. Furthermore, since the length of the extended shaft body is greater than the thickness of the rear guard plate of the slurry pump, the inner wall of the hole of the rear guard plate of the slurry pump contacts the outer wall of the extended shaft body during the installation process, thus avoiding the risk of the rear guard plate of the slurry pump falling off during the installation process.

[0057] In an optional implementation, the installation process further includes: After the bolts of the rear guard plate are connected to the pump casing, withdraw the extended shaft; the impeller completes the sealing of the rear guard plate.

[0058] Specifically, after the bolts of the rear guard plate are connected to the pump casing, the methods for withdrawing the extended shaft body include: using the inner wall of the extended shaft body with a threaded structure corresponding to the outer diameter of the pump shaft to unscrew it; or, using the fastening mechanism at one end of the extended shaft body close to the rear guard plate to loosen the clamp on the pump shaft, thereby pulling the extended shaft body out of the hole in the rear guard plate of the slurry pump; or, using the snap structure at one end of the extended shaft body close to the pump casing to release the snap connection between the pump casing and the snap structure, release the fixation of the extended shaft body, thereby pulling the extended shaft body out of the hole in the rear guard plate of the slurry pump.

[0059] The present invention provides a device and an installation process for a rear guard plate of a slurry pump. The installation process uses an impeller with a protrusion and a bottom. Since the inner diameter of the protrusion of the impeller is matched with the outer diameter of the pump shaft, and the outer diameter of the bottom is matched with the inner diameter of the rear guard plate, the protrusion of the impeller is matched with the notch corresponding to the pump shaft of the slurry pump, and the bottom of the impeller is matched with the notch corresponding to the rear guard plate of the slurry pump, thereby utilizing the sealing of the rear guard plate after the impeller is completed to further prevent the slurry from flowing out.

[0060] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A device for installing a rear guard plate of a slurry pump, characterized in that: The device comprises: an extended shaft body (2), the extended shaft body (2) being a tubular structure, sleeved on the pump shaft of the slurry pump (1), the length of the extended shaft body (2) being greater than the thickness of the rear guard plate (12) of the slurry pump (1), so that the extended shaft body (2) protrudes from the rear guard plate (12), and the extended shaft body (2) is used to allow the rear guard plate (12) of the slurry pump to slide in through the extended shaft body, thereby completing the connection between the rear guard plate (12) and the pump casing (11).

2. The device according to claim 1, characterized in that The inner diameter of the extended shaft body (2) is matched to the outer diameter of the pump shaft, and the outer diameter of the extended shaft body (2) is matched to the inner diameter of the mounting hole of the rear guard plate (12).

3. The device according to claim 1, characterized in that The inner wall of the extended shaft body (2) is connected to the pump shaft, so that the extended shaft body (2) is sleeved on the pump shaft.

4. The device according to claim 3, characterized in that The inner wall of the extended shaft body (2) has a thread structure corresponding to the outer diameter of the pump shaft.

5. The device according to claim 3, characterized in that One end of the extended shaft body (2) close to the rear guard plate (12) is provided with a fastening mechanism, and the fastening mechanism is used to tighten the pump shaft.

6. The device according to claim 1, characterized in that One end of the extended shaft body (2) close to the pump housing (11) has a snap-fit ​​structure, and the snap-fit ​​structure is used to snap-fit ​​with the pump housing (11) so that the extended shaft body (2) is sleeved on the pump shaft.

7. The device according to claim 1, characterized in that The device further comprises an impeller (3), the impeller (3) comprising a protruding portion (31) and a bottom portion (32), the inner diameter of the protruding portion (31) being matched to the outer diameter of the pump shaft, and the outer diameter of the bottom portion (32) being matched to the inner diameter of the rear guard plate (12), so that after the extended shaft body (2) is installed and withdrawn from the rear guard plate (12), the impeller (3) completes the sealing of the rear guard plate (12).

8. The device according to claim 7, characterized in that The inner diameter of the protrusion (31) has a thread structure corresponding to the outer diameter of the pump shaft.

9. A process for installing a rear guard plate of a slurry pump, characterized in that: The device for installing a rear guard plate of a slurry pump according to any one of claims 1 to 6, wherein the installation process comprises: Sleeve the extended shaft onto the pump shaft of the slurry pump; The rear guard plate of the slurry pump is slid in along the extended shaft body, and the bolts of the rear guard plate are connected to the pump housing.

10. The installation process according to claim 9, characterized in that: Applicable to the device for installing the rear guard plate of a slurry pump as claimed in claim 7 or 8, the installation process further includes: After the bolts of the rear guard plate are connected to the pump housing, the extended shaft body is withdrawn; The sealing of the rear guard plate is completed by the impeller.

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