Split type packing gland assembly of ceramic slurry pump

Abstract

The utility model discloses a ceramic slurry pump split type packing gland assembly which comprises a gland and a packing pressing ring, the packing pressing ring comprises a pair of semicircular pressing rings of a semicircular structure, and the face, facing packing, of each packing pressing ring is a packing pressing face. The face, away from the filler, of the filler pressing ring is a matching face matched with the gland in a pressing mode, the periphery of the gland is provided with a connecting part connected with a slurry pump shell through a detachable component, and the side wall of the gland is provided with an opening structure allowing the semicircular pressing ring to enter and exit. The gland and the packing hold-down ring are of a split structure, after each part is abraded, an independent part can be replaced, the whole part does not need to be replaced, and waste of spare parts is reduced; and the assembly type structure is provided with the opening structure, so that the semicircular pressing ring can be independently replaced from the opening structure during mounting and dismounting, a large axial space is not needed, the length of the rotating shaft can be shortened by a part, and the production cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of pump body accessories, in particular to a split packing gland assembly for a ceramic slurry pump. Background Art

[0002] Slurry pumps are corrosion-resistant, not easy to wear, have low requirements for inhaled water, high efficiency, and strong centrifugal force. Therefore, slurry pumps are widely used in power plants, chemical industry, metallurgy, cement, mines, seawater sand washing, rivers, etc., mainly for drainage, feeding, sewage discharge, slag cleaning, etc. The slurry pump housing and the rotating shaft are sealed with packing. Due to the long-term rotation of the rotating shaft, the packing is seriously worn, so the packing (packing) needs to be replaced frequently. However, the existing slurry pump packing glands on the market are all integral structures and cannot be removed from the slurry pump or are inconvenient to remove, resulting in a small operating space when replacing the thick packing. It is difficult for maintenance personnel to press the packing in, which increases maintenance time and reduces maintenance efficiency, resulting in a significant increase in construction costs and time costs. If the packing gland needs to be replaced, the entire component must be replaced, resulting in a serious waste of spare parts. Utility Model Content

[0003] The purpose of the utility model is to provide a ceramic slurry pump split packing gland assembly in view of the above-mentioned deficiencies and defects of the prior art, which facilitates the installation of the slurry pump at the production site, saves production costs, reduces maintenance time, increases maintenance efficiency, saves manpower, material and financial resources, and solves the above-mentioned problems.

[0004] The technical problem solved by the present invention can be achieved by adopting the following technical solutions:

[0005] A split packing gland assembly for a ceramic slurry pump comprises a gland and a packing clamping ring, wherein the packing clamping ring comprises a pair of semicircular clamping rings with a semicircular structure, wherein a side of the packing clamping ring facing the packing is a packing clamping surface, and a side of the packing clamping ring away from the packing is a mating surface adapted for clamping with the gland, the outer periphery of the gland is provided with a connecting portion connected to a slurry pump housing via a detachable component, and the side wall of the gland is provided with an opening structure for the semicircular clamping ring to enter and exit.

[0006] In a preferred embodiment of the present invention, the inner circumference of the packing pressing surface is a gradually expanding structure toward the packing.

[0007] The gradual expansion structure can not only reduce raw materials and reduce weight, but also reduce the contact area between the end face of the packing compression surface and the packing, thereby increasing the local stress pressure.

[0008] In a preferred embodiment of the utility model, an annular limiting step is provided on the inner circumference of one end of the gland facing the packing clamping ring, and an annular outer boss matching with the annular limiting step is provided on the outer circumference of one end of the packing clamping ring facing the gland.

[0009] The cooperation between the annular limiting step and the annular outer boss facilitates fixing the packing clamping ring in the gland to avoid positioning errors.

[0010] In a preferred embodiment of the present invention, the connecting portion includes a pair of open grooves symmetrically arranged on both sides of the outer periphery of the gland.

[0011] By providing the open groove, the counterpart matching with the open groove can be easily assembled.

[0012] In a preferred embodiment of the present invention, a countersunk hole is provided on a side of the open groove away from the packing clamping ring.

[0013] By setting the countersunk hole, a part of the counterpart matched with the open slot can be accommodated in the countersunk hole, so as to avoid the length of the counterpart matched with the open slot being too long and affecting the length of the device.

[0014] In a preferred embodiment of the present invention, the gland and the packing clamping ring are both cast from ductile iron.

[0015] Ductile iron has excellent properties such as high strength, high plasticity, high toughness, wear resistance, resistance to severe thermal and mechanical shock, high temperature resistance, corrosion resistance and dimensional stability, ensuring that the gland and packing clamping ring meet the working conditions.

[0016] In a preferred embodiment of the present invention, the detachable component comprises a bolt and nut assembly.

[0017] It can be assembled quickly and easily with bolt and nut assembly.

[0018] Due to the adoption of the above technical solution, compared with the prior art, the gland and packing clamping ring of the utility model are split structures. After each component is worn, a separate component can be replaced without replacing the entire part, thereby reducing the waste of spare parts; and this assembled structure is provided with an opening structure. During installation and disassembly, the semicircular clamping ring can be replaced separately from the opening structure without requiring a large axial space, so the length of the rotating shaft can also be shortened, saving production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 The utility model is a schematic structural diagram of an embodiment.

[0021] Figure 2 for Figure 1 A schematic diagram of the structure viewed from another angle.

[0022] Figure 3 This is a structural explosion diagram of an embodiment of the utility model.

[0023] Figure 4 The figure is a schematic diagram of the structure of an embodiment of the utility model when it cooperates with a bolt and nut assembly.

[0024] Figure 5 It is a schematic diagram of the structure of an embodiment of the utility model when it is matched with a slurry pump housing.

[0025] Figure numerals: slurry pump housing 10, detachable component 20, bolt and nut assembly 21, rotating shaft 30, pressure cover 100, annular limit step 110, connecting part 120, opening groove 121, countersunk hole 122, opening structure 130, packing clamping ring 200, packing clamping surface 201, gradual expansion structure 202, semicircular clamping ring 210, mating surface 220, annular outer boss 221. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0027] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "the" and "the" used in the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0028] It should be understood that although the terms "first", "second", "third", etc. may be used to describe various information in the present invention, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0029] See also Figures 1 to 5 The ceramic slurry pump split packing gland assembly shown includes a gland 100 and a packing clamping ring 200. The packing clamping ring 200 includes a pair of semicircular clamping rings 210 with a semicircular structure. The pair of semicircular clamping ring structures are completely symmetrical and together form a complete circular ring structure, constituting the packing clamping ring 200.

[0030] The side of the packing pressing ring 200 facing the packing is the packing pressing surface 201. In this embodiment, the inner circumference of the packing pressing surface 201 is a gradually expanding structure 202 facing the packing, which can not only reduce raw materials and reduce weight, but also reduce the contact area between the end face of the packing pressing surface 201 and the packing, thereby increasing the local force pressure.

[0031] The side of the packing pressing ring 200 away from the packing is a mating surface 220 that is tightly matched with the gland 100. In this embodiment, the inner circumference of one end of the gland 100 facing the packing pressing ring 200 is provided with an annular limiting step 110, and the outer circumference of one end of the packing pressing ring 200 facing the gland is provided with an annular outer boss 221 that matches the annular limiting step 110. Through the cooperation of the annular limiting step 110 and the annular outer boss 221, it is convenient to fix the packing pressing ring 200 in the gland 100 to avoid positioning errors.

[0032] The outer periphery of the gland 100 is provided with a connection portion 120 connected to the slurry pump housing 10 through a detachable component 20. In this embodiment, the connection portion 120 includes a pair of open grooves 121 symmetrically arranged on both sides of the outer periphery of the gland 100. By providing the open grooves 121, it is easy to assemble the counterpart that matches the open grooves 121. The open grooves 121 in this embodiment are provided with a countersunk hole 122 on the side away from the packing clamping ring 200. The detachable component 20 includes a bolt and nut assembly 21. A part of the nut after the bolt and nut assembly 21 is assembled can be accommodated in the countersunk hole 122 to avoid the length of the counterpart that matches the open groove 121 being too long and affecting the length of the equipment.

[0033] The gland 100 and the packing clamping ring 200 are both cast from ductile iron, which has excellent properties such as high strength, high plasticity, high toughness, wear resistance, resistance to severe thermal and mechanical shock, high temperature resistance, corrosion resistance and dimensional stability, ensuring that the gland and the packing clamping ring meet the use conditions.

[0034] The side wall of the gland 100 is provided with an opening structure 130 for the semicircular clamping ring 210 to enter and exit. The gland 100 and the packing clamping ring 200 of the utility model are split structures. After each component is worn, a separate component can be replaced without replacing the entire part, thereby reducing the waste of spare parts; and this assembled structure is provided with an opening structure 130. During installation and disassembly, the semicircular clamping ring 210 can be replaced separately from the opening structure 130, without requiring a large axial space, so the length of the rotating shaft can also be shortened, saving production costs. When replacing the packing clamping ring in the prior art, the entire assembly needs to be disassembled and assembled, and the required axial space is relatively large, while the utility model only needs to loosen the detachable component 20 appropriately, and the semicircular clamping ring 210 can be replaced separately from the opening structure 130, saving axial operating space.

[0035] When the utility model is assembled, after the packing is assembled, the pressure cover 100 of the utility model is assembled on the rotating shaft 30, with the opening structure 130 facing upward, and then a pair of semicircular clamping rings 210 can be assembled from the opening structure 130 to form a packing clamping ring 200, and the slurry pump housing 10 and the pressure cover 100 are locked by the bolt and nut assembly 21, and then the packing clamping ring 200 is used to clamp the packing.

[0036] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0037] In the description of the present application, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0038] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0039] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0040] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A split packing gland assembly for a ceramic slurry pump, characterized in that: It includes a gland and a packing clamping ring, the packing clamping ring includes a pair of semicircular clamping rings with a semicircular structure, the side of the packing clamping ring facing the packing is the packing clamping surface, the side of the packing clamping ring away from the packing is the matching surface adapted to the gland, the outer periphery of the gland is provided with a connecting portion connected to the slurry pump housing through a detachable part, and the side wall of the gland is provided with an opening structure for the semicircular clamping ring to enter and exit.

2. A ceramic slurry pump split packing gland assembly according to claim 1, characterized in that: The inner circumference of the packing pressing surface is a gradually expanding structure toward the packing.

3. A ceramic slurry pump split packing gland assembly according to claim 1, characterized in that: An annular limiting step is arranged on the inner circumference of one end of the gland facing the packing clamping ring, and an annular outer boss matching with the annular limiting step is arranged on the outer circumference of one end of the packing clamping ring facing the gland.

4. A ceramic slurry pump split packing gland assembly according to claim 1, characterized in that: The connecting portion includes a pair of opening grooves symmetrically arranged on both sides of the outer periphery of the gland.

5. A ceramic slurry pump split packing gland assembly according to claim 4, characterized in that: A countersunk hole is arranged on one side of the open groove away from the packing clamping ring.

6. A ceramic slurry pump split packing gland assembly according to claim 1, characterized in that: The gland and the packing clamping ring are both cast from ductile iron.

7. A ceramic slurry pump split packing gland assembly according to claim 1, characterized in that: The detachable parts include a bolt and nut assembly.

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