Composite ceramic slurry pump head

Abstract

The utility model relates to the technical field of composite slurry pumps, in particular to a composite ceramic slurry pump head which comprises a front pump shell and a rear pump shell, the interior of the front pump shell is communicated with the interior of the rear pump shell to form an installation cavity, and a ceramic impeller unit is installed in the installation cavity. The two sides of the ceramic impeller unit are matched with positioning grooves in the corresponding positions of the front pump shell and the rear pump shell through positioning bosses in the corresponding positions of the ceramic impeller unit respectively, and a front protection piece and a rear protection piece are installed on the left side and the right side of the ceramic impeller unit respectively. The internal structure of the pump head is a full-ceramic structure, and the pump head is made of a ceramic material with high hardness, high density and high temperature stability, so that the pump head has excellent physical properties such as wear resistance, corrosion resistance, high temperature resistance and impact resistance, is high in durability and long in service life, and can effectively reduce the operation cost of equipment for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of composite slurry pumps, in particular to a composite ceramic slurry pump head. Background Art

[0002] Slurry pumps are often used to transport media with high concentration, high viscosity and high solid particle content. They are widely used in mining, metallurgy, construction, chemical industry and other fields.

[0003] Most of the traditional slurry pumps are metal slurry pumps, but metal slurry pumps have the following problems during use: they are prone to cavitation, the flow-through parts are easily worn, and they need to be replaced frequently.

[0004] Therefore, in recent years, a ceramic slurry pump has emerged, which has better performance than metal slurry; however, the existing ceramic slurry pump also has some shortcomings in its structural design: first, the metal and ceramic joints at the impeller shaft are not reasonably designed and easy to break; secondly, most ceramic slurry pumps simply make the impeller and front and rear guard plates out of ceramic material, but there are still problems such as excessive vibration and unreasonable design of connection parts between different ceramic components.

[0005] In addition, a ceramic pump ceramic impeller is also disclosed in the prior art document with patent authorization publication number CN213270472U, whose impeller adopts a snap-on structure. However, when this structure is used under large particle conditions such as tailings, due to too many impeller openings, stress concentration and blade breakage are very likely to occur.

[0006] Based on this, it can be found that the slurry pump in the prior art still has shortcomings in actual use. For this reason, the utility model optimizes the design for the problems existing in the prior art and proposes a composite ceramic slurry pump head to better solve the problems existing in the prior art. Utility Model Content

[0007] The utility model is to solve one of the above-mentioned technical problems, and the technical solution adopted is: a composite ceramic slurry pump head, including a front pump shell and a rear pump shell, the front pump shell is communicated with the interior of the rear pump shell to form an installation cavity, a ceramic impeller unit is installed inside the installation cavity, and the two sides of the ceramic impeller unit are respectively matched with the positioning grooves at the corresponding positions of the front pump shell and the rear pump shell through the positioning bosses at their corresponding positions, and a front guard and a rear guard are respectively installed on the left and right sides of the ceramic impeller unit.

[0008] In any of the above schemes, it is preferred that the ceramic impeller unit includes a composite ceramic volute installed inside the installation cavity, and the front guard and the rear guard are respectively installed on the left and right sides of the composite ceramic volute, and the two sides of the composite ceramic volute are respectively matched with the positioning grooves at the corresponding positions of the front pump casing and the rear pump casing through the positioning bosses at their corresponding positions, and a composite ceramic impeller is installed in the internal space of the composite ceramic volute between the front guard and the rear guard.

[0009] In any of the above schemes, it is preferred that the front guard includes a composite ceramic front guard plate installed at an opening on one side of the front pump casing, the docking position between the composite ceramic front guard plate and the front pump casing is sealed by an assembled first sealing gasket, a first shock-absorbing ring is installed between the composite ceramic volute and the composite ceramic front guard plate, and the center hole of the composite ceramic front guard plate connects the installation cavity with the external space on its right side.

[0010] In any of the above schemes, it is preferred that the rear guard includes a composite ceramic rear guard plate installed at a side opening of the rear pump casing, the docking position between the composite ceramic rear guard plate and the rear pump casing is sealed by an assembled second sealing gasket, a second shock-absorbing ring is installed between the composite ceramic volute and the composite ceramic rear guard plate, and the composite ceramic impeller, the composite ceramic rear guard plate and the composite ceramic front guard plate are all coaxially arranged.

[0011] In any of the above schemes, preferably, a metal toothed sleeve is embedded and installed inside the composite ceramic impeller, a clearance fit is adopted between the composite ceramic impeller and the metal toothed sleeve, a composite ceramic sleeve end cover is embedded and installed at the port of the metal toothed sleeve, and the composite ceramic sleeve end cover is bonded and fixedly connected to the composite ceramic impeller by an adhesive.

[0012] In any of the above schemes, preferably, a pressure reducing cover is installed on the left side of the composite ceramic rear guard plate, the pressure reducing cover and the composite ceramic rear guard plate and the composite ceramic impeller are sealed by a third sealing gasket, the left end of the pressure reducing cover extends into the left port of the rear pump casing, the left opening of the pressure reducing cover is connected to the outside, and the inner cavity of the metal toothed sleeve is connected to the inner cavity of the pressure reducing cover.

[0013] In any of the above schemes, it is preferred that a composite ceramic front guard plate fixing hole is provided on the front pump housing, and the composite ceramic front guard plate fixing hole and the composite ceramic front guard plate hole on the composite ceramic front guard plate are fixed by bolts; a composite ceramic rear guard plate fixing hole is provided on the rear pump housing, and the composite ceramic rear guard plate fixing hole and the composite ceramic rear guard plate hole on the composite ceramic rear guard plate are fixed by bolts.

[0014] In any of the above schemes, it is preferred that the front pump housing and the rear pump housing are locked by bolts.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] 1. The internal structure of the utility model adopts a full ceramic structure, and is made of ceramic materials with high hardness, high density, and high temperature stability, so that it has excellent physical properties such as wear resistance, corrosion resistance, high temperature resistance, and impact resistance. It has strong durability and long service life, and can effectively reduce equipment operating costs in the long run.

[0017] 2. The composite ceramic volute and the front pump casing and the rear pump casing in the utility model are precisely installed by adopting positioning bosses, and shock-absorbing rings are used between the composite ceramic volute and the composite ceramic front guard plate and the composite ceramic rear guard plate, which can effectively prevent ceramic cracking in a long-period vibration working environment.

[0018] 3. The combination of the metal toothed sleeve and the composite ceramic impeller in the utility model can ensure simple installation and disassembly, avoid the breakage of the metal toothed sleeve at the root, and improve the strength of the connection part. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or components are generally identified by similar reference numerals. In the drawings, each element or component is not necessarily drawn according to the actual scale.

[0020] Figure 1 It is a cross-sectional structural schematic diagram of the utility model.

[0021] Figure 2 It is a schematic diagram of the explosion structure of the utility model.

[0022] Figure 3 It is a schematic diagram of the internal structure of the composite ceramic impeller of the utility model in the installed state.

[0023] Figure 4 It is a schematic structural diagram of the metal toothed shaft sleeve of the utility model in the installation state.

[0024] Figure 5 This is a schematic diagram of the structure of the composite ceramic front guard plate of the utility model.

[0025] Figure 6 This is a schematic diagram of the structure of the composite ceramic rear guard plate of the utility model.

[0026] Figure 7 It is a schematic diagram of the distribution structure of the holes of the composite ceramic front guard plate of the utility model.

[0027] Figure 8 It is a schematic diagram of the distribution structure of the holes of the composite ceramic rear guard plate of the utility model.

[0028] In the figure, 1, rear pump casing; 2, front pump casing; 3, composite ceramic volute; 4, positioning boss; 5, positioning groove; 6, composite ceramic rear guard plate hole; 7, composite ceramic front guard plate; 8, composite ceramic rear guard plate; 9, first shock absorber ring; 10, second shock absorber ring; 11, first sealing gasket; 12, second sealing gasket; 13, pressure relief cover; 14, composite ceramic impeller; 15, third sealing gasket; 16, metal toothed sleeve; 17, composite ceramic sleeve end cover; 18, composite ceramic front guard plate fixing hole; 19, composite ceramic rear guard plate fixing hole; 20, composite ceramic front guard plate hole. DETAILED DESCRIPTION

[0029] The following is a detailed description of the embodiments of the technical solution of the utility model in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the scope of protection of the utility model. Figure 1-Figure 8 as shown in .

[0030] A composite ceramic slurry pump head comprises a front pump casing 2 and a rear pump casing 1. The front pump casing 2 is communicated with the interior of the rear pump casing 1 to form an installation cavity. A ceramic impeller unit is installed inside the installation cavity. Both sides of the ceramic impeller unit cooperate with the positioning grooves 5 at the corresponding positions of the front pump casing 2 and the rear pump casing 1 through the positioning bosses 4 at the corresponding positions thereof. A front guard and a rear guard are respectively installed on the left and right sides of the ceramic impeller unit.

[0031] The ceramic impeller unit in the utility model adopts a full ceramic structure design, which can effectively improve the wear resistance, corrosion resistance, high temperature resistance, and impact resistance of the overall structure, making the product durable and having a long service life, while effectively reducing the equipment operating costs.

[0032] Taking the stability of the installation into consideration, the cooperation between the positioning boss 4 and the positioning grooves 5 at the corresponding positions of the front pump housing 2 and the rear pump housing 1 can achieve the purpose of reinforcing the connection strength and stability.

[0033] In any of the above schemes, it is preferred that the ceramic impeller unit includes a composite ceramic volute 3 installed inside the installation cavity, and the front guard and the rear guard are respectively installed on the left and right sides of the composite ceramic volute 3, and the two sides of the composite ceramic volute 3 are respectively matched with the positioning grooves 5 at the corresponding positions of the front pump casing 2 and the rear pump casing 1 through the positioning bosses 4 at their corresponding positions, and a composite ceramic impeller 14 is installed in the internal space of the composite ceramic volute 3 between the front guard and the rear guard.

[0034] It should be noted that when the composite ceramic volute 3 is installed and matched with the front pump casing 2 and the rear pump casing 1, a positioning boss 4 is added to the volute structure of the composite ceramic volute 3 and matched with the positioning grooves 5 on the front pump casing 2 and the rear pump casing 1 to ensure the matching effect and firmness.

[0035] In any of the above schemes, it is preferred that the front guard includes a composite ceramic front guard plate 7 installed at an opening on one side of the front pump casing 2, the docking portion between the composite ceramic front guard plate 7 and the front pump casing 2 is sealed by an assembled first sealing gasket 11, a first shock-absorbing ring 9 is installed between the composite ceramic volute 3 and the composite ceramic front guard plate 7, and the center hole of the composite ceramic front guard plate 7 connects the installation cavity with the external space on its right side.

[0036] In any of the above schemes, it is preferred that the rear guard includes a composite ceramic rear guard plate 8 installed at a side opening of the rear pump casing 1, the docking portion between the composite ceramic rear guard plate 8 and the rear pump casing 1 is sealed by an assembled second sealing gasket 12, a second shock-absorbing ring 10 is installed between the composite ceramic volute 3 and the composite ceramic rear guard plate 8, and the composite ceramic impeller 14, the composite ceramic rear guard plate 8 and the composite ceramic front guard plate 7 are all coaxially arranged.

[0037] It should be noted that when installing the composite ceramic front guard plate 7, the composite ceramic rear guard plate 8 and the corresponding pump casing, the first shock-absorbing ring 9 and the second shock-absorbing ring 10 are respectively added so that, on the basis of sealing, the gap between the composite ceramic front guard plate 7, the composite ceramic rear guard plate 8 and the front pump casing 2, the rear pump casing 1 can be ensured, and the plasticity of the first shock-absorbing ring 9 and the second shock-absorbing ring 10 can be used to achieve shock-absorbing effect to prevent ceramic damage.

[0038] In any of the above schemes, it is preferred that a metal toothed sleeve 16 is embedded and installed inside the composite ceramic impeller 14, a clearance fit is adopted between the composite ceramic impeller 14 and the metal toothed sleeve 16, a composite ceramic sleeve end cover 17 is embedded and installed at the port of the metal toothed sleeve 16, and the composite ceramic sleeve end cover 17 is bonded and fixedly connected to the composite ceramic impeller 14 by an adhesive.

[0039] It should be noted that the composite ceramic impeller 14 and the metal toothed sleeve 16 are connected by embedding a gear-type sleeve into the composite ceramic impeller 14. When embedding, ceramic glue is applied and the top of the impeller is pressed with a sleeve end cover coated with glue. Then, the sleeve end cover is pressed with a pressure reducing cover 13 to increase the strength of the connection and prevent the connection from cracking easily.

[0040] In any of the above schemes, it is preferred that a pressure reducing cover 13 is installed on the left side of the composite ceramic rear guard plate 8, and the pressure reducing cover 13 and the composite ceramic rear guard plate 8 and the composite ceramic impeller 14 are sealed by a third sealing gasket 15. The left end of the pressure reducing cover 13 extends into the left port of the rear pump casing 1, the left opening of the pressure reducing cover 13 is connected to the outside, and the inner cavity of the metal toothed sleeve 16 is connected to the inner cavity of the pressure reducing cover 13.

[0041] The pressure reducing cover 13 and the composite ceramic rear guard plate 8 and the composite ceramic impeller 14 are sealed by the third sealing gasket 15, which can effectively ensure the sealing effect of the connection part. At the same time, the elastic sealing gasket plays a certain anti-vibration and shock-absorbing effect.

[0042] In any of the above schemes, it is preferred that a composite ceramic front guard plate fixing hole 18 is provided on the front pump housing 2, and the composite ceramic front guard plate fixing hole 18 is fixed to the composite ceramic front guard plate hole 20 on the composite ceramic front guard plate 7 by bolt locking; a composite ceramic rear guard plate fixing hole 19 is provided on the rear pump housing 1, and the composite ceramic rear guard plate fixing hole 19 is fixed to the composite ceramic rear guard plate hole 6 on the composite ceramic rear guard plate 8 by bolt locking.

[0043] It should be noted that the front pump housing 2 and the composite ceramic front guard plate 7, as well as the rear pump housing 1 and the composite ceramic rear guard plate 8 are fixed by bolting, which can effectively ensure the convenience of installation and disassembly.

[0044] In any of the above solutions, it is preferred that the front pump housing 2 and the rear pump housing 1 are fastened by bolts.

[0045] Specific working principle: The ceramic impeller unit adopts a full ceramic structure design, which can effectively improve the wear resistance, corrosion resistance, high temperature resistance and impact resistance of the overall structure, so that the product has strong durability and long service life, while effectively reducing the equipment operation cost; in addition, considering the stability of the installation, the positioning boss 4 is matched with the positioning groove 5 at the corresponding position of the front pump casing 2 and the rear pump casing 1 to strengthen the connection strength and stability. Among them, when installing the composite ceramic front guard plate 7, the composite ceramic rear guard plate 8 and the corresponding pump casing, the first shock absorbing ring 9 and the second shock absorbing ring 10 are respectively added, so that on the basis of sealing, the gap between the composite ceramic front guard plate 7, the composite ceramic rear guard plate 8 and the front pump casing 2 and the rear pump casing 1 can be ensured, and the plasticity of the first shock absorbing ring 9 and the second shock absorbing ring 10 is used to play a shock absorbing role to prevent ceramic damage.

[0046] In addition, it can be seen from the above that the internal structure of the pump head of the composite ceramic slurry pump adopts a full ceramic structure, and is made of ceramic materials with high hardness, high density and high temperature stability, so that it has excellent physical properties such as wear resistance, corrosion resistance, high temperature resistance and impact resistance. It has strong durability and long service life. In the long run, it can effectively reduce the equipment operation cost; the composite ceramic volute 3 and the front pump casing 2 and the rear pump casing 1 are precisely installed by adopting the positioning boss 4, and the shock-absorbing ring is used between the composite ceramic volute 3 and the composite ceramic front guard plate 7 and the composite ceramic rear guard plate 8, which can effectively prevent the ceramic from cracking in a long-period vibration working environment; the combination of the metal toothed shaft sleeve 16 and the composite ceramic impeller 14 can ensure simple installation and disassembly, avoid the breakage of the metal toothed shaft sleeve 16 at the root, and improve the strength of the connection part.

[0047] The above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model. For technicians in this technical field, any replacement improvements or changes made to the implementation methods of the utility model fall within the protection scope of the utility model.

[0048] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A composite ceramic slurry pump head, comprising a front pump housing and a rear pump housing, wherein the front pump housing is connected to the interior of the rear pump housing and forms an installation cavity, characterized in that: A ceramic impeller unit is installed inside the installation cavity. The two sides of the ceramic impeller unit cooperate with the positioning grooves at the corresponding positions of the front pump casing and the rear pump casing through the positioning bosses at the corresponding positions thereof. A front guard and a rear guard are respectively installed on the left and right sides of the ceramic impeller unit.

2. A composite ceramic slurry pump head according to claim 1, characterized in that: The ceramic impeller unit includes a composite ceramic volute installed inside a mounting cavity, the front guard and the rear guard are respectively installed on the left and right sides of the composite ceramic volute, the two sides of the composite ceramic volute are respectively matched with the positioning grooves at the corresponding positions of the front pump casing and the rear pump casing through the positioning bosses at the corresponding positions thereof, and a composite ceramic impeller is installed in the internal space of the composite ceramic volute between the front guard and the rear guard.

3. A composite ceramic slurry pump head according to claim 2, characterized in that: The front guard includes a composite ceramic front guard plate installed at an opening on one side of the front pump housing. The docking portion between the composite ceramic front guard plate and the front pump housing is sealed by an assembled first sealing gasket. A first shock-absorbing ring is installed between the composite ceramic volute and the composite ceramic front guard plate. The center hole of the composite ceramic front guard plate connects the installation cavity with the external space on its right side.

4. A composite ceramic slurry pump head according to claim 3, characterized in that: The rear guard comprises a composite ceramic rear guard plate installed at an opening on one side of the rear pump casing. The docking portion between the composite ceramic rear guard plate and the rear pump casing is sealed by an assembled second sealing gasket. A second shock-absorbing ring is installed between the composite ceramic volute and the composite ceramic rear guard plate. The composite ceramic impeller, the composite ceramic rear guard plate and the composite ceramic front guard plate are all coaxially arranged.

5. The composite ceramic slurry pump head according to claim 4, characterized in that: A metal toothed sleeve is embedded and installed inside the composite ceramic impeller, and a clearance fit is adopted between the composite ceramic impeller and the metal toothed sleeve. A composite ceramic sleeve end cover is embedded and installed at the port of the metal toothed sleeve, and the composite ceramic sleeve end cover is bonded and fixedly connected to the composite ceramic impeller by an adhesive.

6. The composite ceramic slurry pump head according to claim 5, characterized in that: A pressure reducing cover is installed on the left side of the composite ceramic rear guard plate. The pressure reducing cover, the composite ceramic rear guard plate and the composite ceramic impeller are sealed by a third sealing gasket. The left end of the pressure reducing cover extends into the left port of the rear pump casing. The left opening of the pressure reducing cover is connected to the outside, and the inner cavity of the metal toothed sleeve is connected to the inner cavity of the pressure reducing cover.

7. The composite ceramic slurry pump head according to claim 6, characterized in that: The front pump housing is provided with a composite ceramic front guard plate fixing hole, and the composite ceramic front guard plate fixing hole is fixed to the composite ceramic front guard plate hole on the composite ceramic front guard plate by bolt locking; The rear pump housing is provided with a composite ceramic rear guard plate fixing hole, and the composite ceramic rear guard plate fixing hole is fixed to the composite ceramic rear guard plate hole on the composite ceramic rear guard plate by bolt locking.

8. The composite ceramic slurry pump head according to claim 7, characterized in that: The front pump housing and the rear pump housing are locked by bolts.

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