Cam rotor pump convenient to maintain

Abstract

The invention relates to a cam rotor pump convenient to maintain, and belongs to the field of cam rotor pumps, the cam rotor pump convenient to maintain comprises a pump shell, a base and a connector pipeline are arranged on the pump shell, an end cover is arranged on the front face of the pump shell, a connecting structure and a filtering structure are arranged on the connector pipeline, and a mounting structure used for fixing the end cover is arranged on the base. According to the cam rotor pump convenient to maintain, the end cover and the pump shell are designed to be in a sleeved connection mode, then the mounting frame is controlled, the two positioning frames are driven to move downwards, and therefore the edges of the end cover and the pump shell are fixed, traditional screw fixing is replaced, the end cover can be rapidly disassembled and assembled in the overhauling process of the cam rotor pump, and the maintenance efficiency of the cam rotor pump is improved. Solid particles in water can be filtered through a filter screen, the control sleeve is rotated, and two positioning blocks in the positioning assembly are extruded towards the opposite sides, so that the positioning blocks are inserted into the external water pipe and fixed, and the cam rotor pump is rapidly installed.

Description

Technical Field

[0001] The invention relates to the technical field of cam rotor pumps, in particular to a cam rotor pump which is easy to maintain. Background Art

[0002] The cam rotor pump is an advanced fluid equipment with a fully rubber-coated rotor. It has strong wear resistance and can adapt to different media and working conditions. The idling time can reach more than 60 minutes. The rotor and the housing are matched with high-precision clearance, which not only ensures the efficient operation of the pump, but also effectively prevents medium leakage. The cam rotor pump relies on two synchronously counter-rotating rotors to generate suction at the inlet during the rotation process, thereby sucking in the material to be transported. It can efficiently transport various viscous or particulate media without drainage and pump filling. It can be applied to various complex fluid media and performs well when handling high-viscosity media, such as transporting crude oil and heavy oil in the petroleum industry.

[0003] China Invention Publication No. CN114483574A discloses a cam rotor pump that is easy to maintain. A filter screen is arranged inside the water inlet pipe to isolate large particles of impurities and prevent them from directly contacting the cam, thereby reducing the wear of the cam. In actual use, the connection between the water inlet pipe and the connecting pipe is still a flange connection, which means that when installing the cam rotor pump, it is necessary to tighten multiple screws for fixing. Moreover, when disassembling and overhauling, the end cover on the cam rotor pump needs to be removed, and the multiple screws fixing the end cover also need to be unscrewed, which makes the installation or disassembly and overhaul of the cam rotor pump more troublesome. Therefore, a cam rotor pump that is easy to maintain is proposed to solve the above problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a cam rotor pump that is easy to maintain and has the advantage of being easy to install, disassemble and overhaul the cam rotor pump. It solves the problem that the connection between the water inlet pipe and the connecting pipe still adopts a flange connection, which results in the need to tighten multiple screws for fixing when installing the cam rotor pump, and the end cover on the cam rotor pump needs to be removed during disassembly and overhaul, and the multiple screws fixing the end cover also need to be unscrewed, which makes the installation or disassembly and overhaul of the cam rotor pump more troublesome.

[0005] To achieve the above object, the present invention provides the following technical solution: a cam rotor pump that is easy to maintain, comprising a pump housing, a base and an interface pipe are arranged on the pump housing, an end cover is arranged on the front of the pump housing, a connecting structure and a filtering structure are arranged on the interface pipe, and a mounting structure for fixing the end cover is arranged on the base;

[0006] The connection structure includes a connecting sleeve fixedly installed on the outer surface of the interface pipe and used to sleeve on an external water pipe. The top and bottom of the connecting sleeve are provided with installation grooves. Positioning components for fixing the external water pipe are arranged inside the two installation grooves. A control sleeve is threadedly installed on the outer surface of the connecting sleeve. An anti-slip component for limiting the control sleeve and preventing it from slipping is fixedly installed on the outer surface of the connecting sleeve.

[0007] Furthermore, the filtering structure includes a plug-in cylinder with one end penetrating and extending into the interior of the interface pipe and fixedly connected thereto, a filter net for filtering solid impurities is fixedly installed inside the plug-in cylinder, and a sealing component for sealing the interface pipe and the external water connection is installed on the outer surface of the plug-in cylinder.

[0008] Furthermore, the mounting structure includes a mounting frame fixedly mounted on the top of the base, and positioning frames for fixing the end cover and the edge of the pump casing are slidably mounted on the left and right sides of the inner cavity of the mounting frame. Two connecting brackets are slidably mounted on the mounting frame, which penetrate into the interior of the mounting frame and are respectively fixedly connected to the two positioning frames. A locking component for fixing the position of the connecting bracket is installed on the mounting frame.

[0009] Furthermore, the interface pipe is fixedly connected to the pump casing and one end of the interface pipe passes through and extends to the interior of the pump casing. A cam rotor is rotatably installed inside the pump casing. The base is fixedly installed at the bottom of the pump casing, and the end cover is sleeved on the front of the pump casing.

[0010] Furthermore, the positioning assembly includes two positioning blocks, which are slidably installed inside the two installation grooves respectively, and one end of the two positioning blocks respectively penetrates and extends to an external water pipe plugged into one end of the interface pipe.

[0011] Furthermore, the control sleeve includes a threaded sleeve and a limiting sleeve, the threaded sleeve is threadedly mounted on the outer surface of the connecting sleeve, and the limiting sleeve is fixedly mounted on the outer surface of the threaded sleeve and one end thereof penetrates and extends to one side of the threaded sleeve.

[0012] Furthermore, the anti-drop assembly includes two limiting rings, which are respectively fixedly mounted on the outer surface of the connecting sleeve and are symmetrically distributed on the left and right.

[0013] Furthermore, the sealing assembly includes a sealing rubber ring and two annular metal sheets, the two annular metal sheets are respectively sleeved on the outer surface of the plug-in tube, and the sealing rubber ring is installed on the outer surface of the plug-in tube and is located between the two annular metal sheets.

[0014] Furthermore, both left and right sides of the installation frame are provided with limiting grooves, and two limiting blocks are fixedly installed on opposite sides of the two positioning frames, and the two limiting blocks are slidably connected to the inner walls of the two limiting grooves respectively.

[0015] Furthermore, the locking component includes two fixing screws, one end of each of the two fixing screws passes through the connecting bracket and extends to the outside of the mounting frame, and the two fixing screws are respectively threadedly connected to the mounting frame.

[0016] Compared with the prior art, the present invention provides a cam rotor pump that is easy to maintain and has the following features:

[0017] Beneficial effects:

[0018] 1. The cam rotor pump which is easy to maintain is provided with a connection structure, so that the interface pipe and the external water pipe are connected by using a plug-in tube, and the solid particles in the water can be filtered by a filter net, so as to protect the cam rotor inside the pump housing. Moreover, it is only necessary to rotate the control sleeve and squeeze the two positioning blocks in the positioning assembly to the opposite side so that the positioning blocks are inserted into the inside of the external water pipe and fixed to realize the rapid installation of the cam rotor pump.

[0019] 2. The cam rotor pump which is easy to maintain is provided with a mounting structure, the end cover and the pump casing are designed to be sleeved, and then the mounting frame is controlled to drive the two positioning frames to move downward, so as to fix the edge of the end cover and the pump casing, thereby replacing the traditional screw fixation, so that the end cover can be quickly disassembled and assembled during the maintenance of the cam rotor pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure proposed by the present invention;

[0021] Figure 2 The structure of the present invention is shown in FIG. Figure 1 A in the enlarged view;

[0022] Figure 3 This is a schematic diagram of the installation of the structural end cover and pump casing proposed by the present invention;

[0023] Figure 4 It is a three-dimensional schematic diagram of the structural installation structure proposed by the present invention;

[0024] Figure 5 It is a front view of the structural installation structure proposed by the present invention;

[0025] Figure 6 It is a three-dimensional schematic diagram of the structural end cover proposed by the present invention.

[0026] In the figure: 1. pump housing; 2. base; 3. cam rotor; 4. interface pipe; 51. connecting sleeve; 52. mounting groove; 53. positioning assembly; 54. control sleeve; 55. anti-drop assembly; 56. plug-in sleeve; 57. filter screen; 58. sealing assembly; 6. end cover; 71. mounting frame; 72. positioning frame; 73. connecting bracket; 74. locking component. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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 ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-6 A cam rotor pump which is easy to maintain comprises a pump casing 1, a base 2 and an interface pipe 4 are arranged on the pump casing 1, an end cover 6 is arranged on the front of the pump casing 1, a connecting structure and a filtering structure are arranged on the interface pipe 4, a mounting structure for fixing the end cover 6 is arranged on the base 2, the interface pipe 4 is fixedly connected to the pump casing 1 and one end of the interface pipe 4 passes through and extends to the interior of the pump casing 1, a cam rotor 3 is rotatably installed inside the pump casing 1, the base 2 is fixedly installed on the bottom of the pump casing 1, and the end cover 6 is sleeved on the front of the pump casing 1.

[0029] In this embodiment, the connection structure includes a connection sleeve 51 fixedly mounted on the outer surface of the interface pipe 4 and used for sleeve-connecting the external water pipe. The top and bottom of the connection sleeve 51 are provided with installation grooves 52. The two installation grooves 52 are provided with positioning components 53 for fixing the external water pipe. The positioning components 53 include two positioning blocks. The two positioning blocks are respectively slidably mounted in the two installation grooves 52. One end of the two positioning blocks respectively penetrates and extends to the external water pipe plugged into one end of the interface pipe 4, so that the two positioning blocks can be inserted into the external water pipe to fix the position of the external water pipe. The outer surface of the connection sleeve 51 is threadedly mounted with a control sleeve 54. The outer surface of the connection sleeve 51 is fixedly mounted with an anti-slip component 55 for limiting the control sleeve 54 to prevent slipping. The anti-slip component 55 includes two limiting rings. The two limiting rings are respectively fixedly mounted on the outer surface of the connection sleeve 51 and are symmetrically distributed. The trajectory of limiting the left and right movement of the control sleeve 54 is realized to prevent slipping.

[0030] Among them, the control sleeve 54 includes a threaded sleeve and a limit sleeve. The threaded sleeve is threadedly installed on the outer surface of the connecting sleeve 51, and the limit sleeve is fixedly installed on the outer surface of the threaded sleeve and one end passes through and extends to one side of the threaded sleeve, so that the threaded sleeve can be rotated and controlled to move left and right, thereby using the moving threaded sleeve to squeeze the two positioning blocks, and using the limit sleeve to prevent the positioning blocks from falling off.

[0031] By adopting the above technical solution, one end of the external water pipe to be connected is inserted into the interior of the connecting sleeve 51, and then the threaded sleeve in the control sleeve 54 is rotated to make the threaded sleeve move to the right on the outer surface of the connecting sleeve 51, so that the moving threaded sleeve squeezes the two positioning blocks in the positioning assembly 53 to the opposite side until the threaded sleeve contacts the limiting ring in the anti-detachment assembly 55, thereby squeezing the positioning block into the external water pipe, thereby realizing the rapid installation of the external water pipe and the interface pipe 4.

[0032] In this embodiment, the filtering structure includes a plug-in tube 56 with one end penetrating and extending into the interior of the interface pipe 4 and fixedly connected thereto, a filter screen 57 for filtering solid impurities is fixedly installed inside the plug-in tube 56, and a sealing component 58 for sealing the interface pipe 4 and the external water connection is installed on the outer surface of the plug-in tube 56.

[0033] In addition, the sealing assembly 58 includes a sealing rubber ring and two annular metal sheets. The two annular metal sheets are respectively sleeved on the outer surface of the plug-in tube 56. The sealing rubber ring is installed on the outer surface of the plug-in tube 56 and is located between the two annular metal sheets. It is convenient to use an external water pipe to squeeze one end of the interface pipe 4, thereby stabilizing the sealing rubber ring on the outer surface of the plug-in tube 56 to achieve a sealing effect.

[0034] By adopting the above technical solution, one end of the external water pipe to be connected is inserted into the interior of the connecting sleeve 51 and sleeved on the outer surface of the plug-in tube 56, and then the external water pipe and the interface pipe 4 are fixed by using the connecting structure, so that the sealing rubber ring can be used to ensure the sealing of the connection, and solid impurities can be filtered through the filter net 57.

[0035] In this embodiment, the mounting structure includes a mounting frame 71 fixedly mounted on the top of the base 2, and positioning frames 72 for fixing the end cover 6 and the edge of the pump casing 1 are slidably mounted on the left and right sides of the inner cavity of the mounting frame 71. Two connecting brackets 73 penetrating into the interior of the mounting frame 71 and fixedly connected to the two positioning frames 72 are slidably mounted on the mounting frame 71. A locking component 74 for fixing the position of the connecting bracket 73 is installed on the mounting frame 71. The locking component 74 includes two fixing screws, one end of the two fixing screws penetrates the connecting bracket 73 and extends to the outside of the mounting frame 71, and the two fixing screws are respectively threadedly connected to the mounting frame 71 to facilitate fixing the position of the connecting bracket 73.

[0036] It should be noted that limiting grooves are provided on both sides of the installation frame 71, and two limiting blocks are fixedly installed on the opposite sides of the two positioning frames 72. The two limiting blocks are respectively slidably connected to the inner walls of the two limiting grooves to limit the up and down movement trajectories of the two positioning frames 72.

[0037] By adopting the above technical solution, the two fixing screws in the rotating locking component 74 are realized, so that the fixing screws are withdrawn from the connecting bracket 73, and then the connecting bracket 73 is lifted upward, so that the connecting bracket 73 drives the two positioning frames 72 to move upward until the positioning frames 72 are separated from the edges of the pump casing 1 and the end cover 6, thereby quickly releasing the fixation of the end cover 6, making it easier for the staff to open the pump casing 1.

[0038] The beneficial effects of the above embodiments are:

[0039] The cam rotor pump which is easy to maintain, when installing the cam rotor pump, one end of the external water pipe to be connected is inserted into the interior of the connecting sleeve 51 and sleeved on the outer surface of the plug-in sleeve 56, and then the threaded sleeve in the control sleeve 54 is rotated to make the threaded sleeve move to the right on the outer surface of the connecting sleeve 51, so that the moving threaded sleeve squeezes the two positioning blocks in the positioning assembly 53 to the opposite side until the threaded sleeve abuts against the limiting ring in the anti-slip assembly 55, thereby squeezing the positioning block onto the external water pipe, and using the sealing rubber ring in the sealing assembly 58 to seal the connection gap between the external water pipe and the interface pipe 4.

[0040] When it is necessary to remove the end cover 6 and inspect the inside of the pump casing 1, rotate the two fixing screws in the locking component 74 so that the fixing screws withdraw from the connecting bracket 73, and then lift the connecting bracket 73 upward, so that the connecting bracket 73 drives the two positioning frames 72 to move upward until the positioning frames 72 are separated from the edge of the pump casing 1 and the end cover 6, thereby quickly releasing the fixation of the end cover 6, making it easier for the staff to open the pump casing 1.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cam rotor pump that is easy to maintain, comprising a pump housing (1), characterized in that: The pump housing (1) is provided with a base (2) and an interface pipe (4), the front of the pump housing (1) is provided with an end cover (6), the interface pipe (4) is provided with a connection structure and a filtering structure, and the base (2) is provided with a mounting structure for fixing the end cover (6); The connection structure comprises a connecting sleeve (51) fixedly mounted on the outer surface of the interface pipe (4) and used for sleeve-connecting an external water pipe, the top and bottom of the connecting sleeve (51) are provided with mounting grooves (52), the interiors of the two mounting grooves (52) are provided with positioning components (53) for fixing the external water pipe, the outer surface of the connecting sleeve (51) is threadedly mounted with a control sleeve (54), and the outer surface of the connecting sleeve (51) is fixedly mounted with an anti-slip component (55) for limiting the control sleeve (54) from slipping off.

2. A cam rotor pump that is easy to maintain according to claim 1, characterized in that: The filtering structure comprises a plug-in tube (56) having one end penetrating and extending into the interior of the interface pipe (4) and fixedly connected thereto, a filter screen (57) for filtering solid impurities being fixedly installed inside the plug-in tube (56), and a sealing component (58) for sealing the interface pipe (4) and the external water connection being installed on the outer surface of the plug-in tube (56).

3. A cam rotor pump that is easy to maintain according to claim 1, characterized in that: The mounting structure comprises a mounting frame (71) fixedly mounted on the top of the base (2); positioning frames (72) for fixing the end cover (6) and the edge of the pump casing (1) are slidably mounted on both left and right sides of the inner cavity of the mounting frame (71); two connecting brackets (73) penetrating into the interior of the mounting frame (71) and respectively fixedly connected to the two positioning frames (72) are slidably mounted on the mounting frame (71); and a locking component (74) for fixing the position of the connecting bracket (73) is mounted on the mounting frame (71).

4. A cam rotor pump that is easy to maintain according to claim 1, characterized in that: The interface pipe (4) is fixedly connected to the pump casing (1), and one end of the interface pipe (4) passes through and extends into the interior of the pump casing (1). A cam rotor (3) is rotatably mounted inside the pump casing (1). The base (2) is fixedly mounted on the bottom of the pump casing (1), and the end cover (6) is sleeved on the front of the pump casing (1).

5. The cam rotor pump that is easy to maintain according to claim 1, characterized in that: The positioning assembly (53) comprises two positioning blocks, which are slidably mounted inside the two mounting grooves (52) respectively, and one end of the two positioning blocks respectively penetrates and extends to an external water pipe plugged into one end of the interface pipe (4).

6. The cam rotor pump that is easy to maintain according to claim 1, characterized in that: The control sleeve (54) comprises a threaded sleeve and a limiting sleeve, wherein the threaded sleeve is threadably mounted on the outer surface of the connecting sleeve (51), and the limiting sleeve is fixedly mounted on the outer surface of the threaded sleeve and one end of the limiting sleeve penetrates and extends to one side of the threaded sleeve.

7. The cam rotor pump that is easy to maintain according to claim 1, characterized in that: The anti-drop assembly (55) comprises two limiting rings, which are respectively fixedly mounted on the outer surface of the connecting sleeve (51) and are symmetrically distributed on the left and right.

8. The cam rotor pump that is easy to maintain according to claim 2, characterized in that: The sealing assembly (58) comprises a sealing rubber ring and two annular metal sheets. The two annular metal sheets are respectively sleeved on the outer surface of the plug-in tube (56). The sealing rubber ring is installed on the outer surface of the plug-in tube (56) and is located between the two annular metal sheets.

9. The cam rotor pump that is easy to maintain according to claim 3, characterized in that: The left and right sides of the installation frame (71) are both provided with limiting grooves, and the opposite sides of the two positioning frames (72) are both fixedly installed with two limiting blocks, and the two limiting blocks are respectively slidably connected to the inner walls of the two limiting grooves.

10. The cam rotor pump that is easy to maintain according to claim 3, characterized in that: The locking component (74) includes two fixing screws, one end of each of the two fixing screws passes through the connecting bracket (73) and extends to the outside of the mounting frame (71), and the two fixing screws are respectively threadedly connected to the mounting frame (71).

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