One-way valve cover for slurry pump, one-way valve assembly and slurry pump thereof

Abstract

The utility model discloses a one-way valve cover for a slurry pump, a one-way valve assembly and the slurry pump. According to the one-way valve cover for the slurry pump, a connecting hole is formed in the center of a cover body, a connecting piece is fixedly connected into the connecting hole, the other end of the connecting piece is integrally formed or fixedly connected with a connecting cylinder, and the inner wall of the connecting cylinder is fixedly connected with a sliding cylinder. According to the one-way valve assembly for the slurry pump, the upper end of a valve body is fixedly connected with a one-way valve cover for the slurry pump. The problems that in the prior art, a one-way valve cover is unreasonable in structural design, cost is increased and materials are seriously wasted due to the fact that the whole valve cover is replaced are solved. According to the one-way valve cover for the slurry pump, the one-way valve assembly and the slurry pump thereof, the connecting strength of the connecting piece is guaranteed, the connecting piece, the connecting cylinder and the sliding cylinder are a single assembly, and when damage occurs, the connecting piece, the connecting cylinder and the sliding cylinder can be detached in time, a new connecting piece, a new connecting cylinder and a new sliding cylinder connecting cover body are replaced; the one-way valve can be recovered to work.

Description

Technical Field

[0001] The utility model relates to the technical field of structural design of mud pump accessories, in particular to a one-way valve cover, a one-way valve component and a mud pump used for a mud pump. Background Art

[0002] A valve that opens or closes automatically by the flow and force of the medium to prevent the medium from flowing back is called a check valve. According to the structure, it can be divided into three types: lift check valve, swing check valve and butterfly check valve. These check valves are often used in factories, heating systems, compressed air, water supply and other devices to prevent backflow or discharge.

[0003] In order to satisfy the up and down movement of the valve core structure and realize the one-way conduction function, it is necessary to design a cylinder structure on the valve cover to limit the movement of the valve core.

[0004] In the prior art, the cylinder structure and the valve cover are an integral structure, or the cylinder structure and the valve cover are connected separately.

[0005] The cylinder structure and the valve cover are an integral structure, which increases costs. In particular, the cylinder structure is a consumable part. During long-term use, when the cylinder is damaged, the valve cover can only be replaced together, which seriously increases costs.

[0006] The connection surface of the cylinder structure and the valve cover is too small when connected in isolation, and the connection strength between the cylinder structure and the valve cover cannot be guaranteed. It is easy to be damaged at the connection between the cylinder and the valve cover, affecting the use of the one-way valve.

[0007] It can be seen that the check valve cover structure design in the prior art is unreasonable, and the entire valve cover needs to be replaced, resulting in increased costs and serious waste of materials; or the cylinder structure is easily damaged, causing the entire mud pump to stop running, seriously affecting construction efficiency. Utility Model Content

[0008] In view of this, the main purpose of the utility model is to provide a one-way valve cover, a one-way valve assembly and a mud pump for a mud pump, which can reduce replacement cost, reduce material waste and improve construction efficiency.

[0009] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0010] A one-way valve cover for a mud pump comprises: a cover body, a connecting piece, a connecting tube and a sliding tube; a connecting hole is provided at the center of the cover body, the connecting piece is fixedly connected in the connecting hole, the other end of the connecting piece is integrally formed or fixedly connected to the connecting tube, and the inner wall of the connecting tube is fixedly connected to the sliding tube;

[0011] In a preferred embodiment, a pressure relief hole is opened through the side walls of the sliding cylinder and the connecting cylinder.

[0012] In a preferred embodiment, the lower end of the connecting hole is a stepped hole, the connecting piece is a stepped rod, and the stepped rod is cooperatively connected inside the stepped hole.

[0013] In a preferred embodiment, a connecting platform is integrally formed at the lower end of the connecting piece, and the diameter of the connecting platform is larger than the maximum diameter of the stepped hole.

[0014] In a preferred embodiment, the connecting tube is integrally formed at the lower end of the connecting platform.

[0015] In a preferred embodiment, the connecting platform is provided with a connecting groove in the middle of the connecting cylinder, and the upper end of the sliding cylinder extends into the connecting groove;

[0016] In a preferred embodiment, a sealing plate is integrally formed at the upper end of the sliding cylinder, and the thickness of the sealing plate is the same as the depth of the connecting groove.

[0017] In a preferred embodiment, the pressure relief hole is formed at one end of the connecting tube close to the connecting platform.

[0018] In a preferred embodiment, a fixing groove is provided at the center of the lower end of the connecting platform, and the upper end of the connecting tube is fixedly connected inside the fixing groove.

[0019] In a preferred embodiment, the upper end of the sliding cylinder extends into the fixing groove;

[0020] In a preferred embodiment, a sealing plate is integrally formed on the upper end of the sliding cylinder, and the thickness of the sealing plate is the same as the depth of the fixing groove;

[0021] In a preferred embodiment, the lower end surface of the connecting platform is flush with the upper side of the pressure relief hole.

[0022] The one-way valve assembly for a mud pump comprises a valve body, the upper end of which is fixedly connected to the one-way valve cover of the mud pump.

[0023] A mud pump, wherein the one-way valve of the mud pump is the above-mentioned one-way valve assembly for the mud pump.

[0024] The one-way valve cover, one-way valve assembly and mud pump of the utility model for a mud pump have the following beneficial effects:

[0025] The one-way valve cover for a mud pump comprises: a cover body, and also comprises: a connecting piece, a connecting tube and a sliding tube; a connecting hole is provided at the center of the cover body, the connecting piece is fixedly connected in the connecting hole, the other end of the connecting piece is integrally formed or fixedly connected to the connecting tube, and the inner wall of the connecting tube is fixedly connected to the sliding tube; a pressure relief hole is provided through the side wall of the sliding tube and the connecting tube. The one-way valve assembly for a mud pump, the upper end of the valve body is fixedly connected to the one-way valve cover for a mud pump. The one-way valve of the mud pump is the one-way valve assembly for a mud pump.

[0026] The problem that the irrational structural design of the one-way valve cover in the prior art causes the entire valve cover to be replaced, resulting in increased costs and serious waste of materials; or the cylinder structure is easily damaged, causing the entire mud pump to stop running, seriously affecting construction efficiency.

[0027] The one-way valve cover for the mud pump ensures the connection strength of the connecting piece, and further connects the connecting tube and the sliding tube through the connecting piece, so that the connecting piece, the connecting tube and the sliding tube are a single component. When damaged, the one-way valve can be restored to work by timely disassembling the connecting piece, the connecting tube and the sliding tube and replacing a new connecting piece, the connecting tube and the sliding tube connecting cover body. The cost of the connecting piece, the connecting tube and the sliding tube is greatly reduced, and waste is reduced, and the production enterprise can also greatly reduce the inventory of loss parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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.

[0029] Figure 1 It is a structural schematic diagram of a one-way valve cover for a mud pump according to an embodiment of the present disclosure;

[0030] Figure 2 for Figure 1 A cross-sectional view of a one-way valve cover for a mud pump according to an embodiment of the present disclosure is shown;

[0031] Figure 3 for Figure 1 A cross-sectional view of a one-way valve cover for a mud pump according to another embodiment of the present disclosure is shown;

[0032] Figure 4 for Figure 1 A cross-sectional view of a cover body of a check valve cover for a mud pump according to an embodiment of the present disclosure is shown.

[0033]

Main component symbol description

[0034] 1. Cover body; 11. Connection hole;

[0035] 2. Connecting piece; 21. Connecting platform;

[0036] 3. Connecting tube;

[0037] 4. Sliding cylinder; 41. Sealing plate;

[0038] 5. Pressure relief hole. DETAILED DESCRIPTION

[0039] The one-way valve cover for a mud pump, the one-way valve assembly and the mud pump thereof of the utility model are further described in detail below in conjunction with the accompanying drawings and embodiments of the utility model.

[0040] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0041] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0042] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0043] 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.

[0044] like Figure 1-Figure 4 As shown, the one-way valve cover for the mud pump includes: a cover body 1 for sealing the one-way valve body, and also includes: a connector 2, a connecting cylinder 3 and a sliding cylinder 4 for limiting the piston of the one-way valve. A connecting hole 11 is opened in the center of the cover body 1, and the connector 2 is fixedly connected in the connecting hole 11. The other end of the connector 2 is integrally formed or fixedly connected to the connecting cylinder 3, and the inner wall of the connecting cylinder 3 is fixedly connected to the sliding cylinder 4. The connecting function of the sliding cylinder 4 is realized by the connector 2 and the connecting cylinder 3, so as to meet the limiting function of the piston by the sliding cylinder 4. Thus, the reciprocating motion of the piston is realized. The connector 2 passes through the cover body 1 to ensure the connection strength of the connector 2, and further connects the connecting cylinder 3 and the sliding cylinder 4 through the connector, so that the connector 2, the connecting cylinder 3 and the sliding cylinder 4 are a single component. When damage occurs, the connector 2, the connecting cylinder 3 and the sliding cylinder 4 can be disassembled in time, and the new connector 2, the connecting cylinder 3 and the sliding cylinder 4 can be replaced to connect the cover body 1, so that the one-way valve can be restored to work. The cost of the connecting piece 2, the connecting tube 3 and the sliding tube 4 is greatly reduced, and waste is reduced, and the manufacturing enterprise can also greatly reduce the inventory of consumable parts.

[0045] In order to ensure the release of pressure during the movement of the piston and to avoid the compression of the medium inside the sliding cylinder 4 during the movement of the piston, which would affect the movement of the piston, a pressure relief hole 5 is provided through the side wall of the sliding cylinder 4 and the connecting cylinder 3. When the piston is extended into the sliding cylinder 4, the medium can flow out along the pressure relief hole 5, which prevents the medium from affecting the movement of the piston; when the piston is extended out of the sliding cylinder 4, the medium can flow in along the pressure relief hole 5, which prevents the medium from affecting the movement of the piston.

[0046] In order to improve the connection strength of the connector 2 and increase the sealing effect between the connector 2 and the connection hole 11, the lower end of the connection hole 11 is a stepped hole, and the connector 2 is a stepped rod, which is connected in the stepped hole. The structure of the stepped hole and the stepped rod restricts the entire connector 2 to the inside of the cover body 1, and only part of the connector 2 extends out of the cover body 1. The part extending out of the cover body 1 is fixed by a nut or other fixing structure, which can ensure that the connector 2 is conveniently, quickly and stably connected and fixed.

[0047] In order to improve the limiting and sealing surface of the connector 2 and the cover body 1, and to increase the connection area between the connector 2 and the connection tube, a connecting platform 21 is integrally formed at the lower end of the connector 2, and the diameter of the connecting platform 21 is larger than the maximum diameter of the stepped hole. The connecting platform 21 is larger than the area of ​​the stepped hole, and the connecting platform 21 and the bottom surface of the cover body 1 are sealed, which further improves the sealing strength between the connector 2 and the cover body 1.

[0048] In one embodiment, if Figure 2 As shown, in order to ensure the strength between the connecting tube 3 and the connecting piece 2, preferably, the connecting tube 3 is integrally formed at the lower end of the connecting platform 21. The integrally formed structure avoids cracks and stress concentration caused by the connection, thereby improving the strength of the connecting tube 3.

[0049] In order to improve the connection strength of the sliding cylinder 4 and extend it into a wider size, the sliding cylinder 4 is prevented from sliding out during the sliding process. The connecting platform 21 is provided with a connection groove in the middle of the connecting cylinder 3, and the upper end of the sliding cylinder 4 extends into the connection groove; the connection area is increased and the connection stability is increased. The preferred interference fit between the sliding cylinder 4 and the connecting cylinder 3 ensures the connection strength and is also convenient for connection.

[0050] In order to allow the medium entering from the pressure relief hole 5 to act on the sliding cylinder 4 during operation, especially when the piston extends into the sliding cylinder 4, the sliding cylinder 4 can be pushed upward to further improve the connection stability of the sliding cylinder 4. The upper end of the sliding cylinder 4 is integrally formed with a sealing plate 41, and the pressure acts on the sealing plate 41, forcing the sliding cylinder 4 to extend upward. Furthermore, in order to facilitate the outflow of the medium in the pressure relief hole 5 and avoid the formation of vortex at the bottom of the sealing plate 41, the thickness of the sealing plate 41 is the same as the depth of the connection groove.

[0051] In order to increase the movable size of the piston, a pressure relief hole 5 is provided at one end of the connecting tube 3 close to the connecting platform 21 to ensure that the pressure relief hole 5 can meet the requirements of use when the piston is extended to the maximum stroke.

[0052] In another embodiment, if Figure 3 As shown, a fixing groove is provided at the center of the lower end of the connecting platform 21, and the upper end of the connecting tube 3 is fixedly connected inside the fixing groove, extending into the fixing groove to increase the fixing connection area and improve the connection strength.

[0053] Similarly, the upper end of the sliding cylinder 4 extends into the fixing groove;

[0054] In order to allow the medium entering from the pressure relief hole 5 to act on the sliding cylinder 4 during operation, especially when the piston extends into the sliding cylinder 4, the sliding cylinder 4 can be pushed upward to further improve the connection stability of the sliding cylinder 4. The upper end of the sliding cylinder 4 is integrally formed with a sealing plate 41, and the pressure acts on the sealing plate 41, forcing the sliding cylinder 4 to extend upward. Furthermore, in order to facilitate the outflow of the medium in the pressure relief hole 5 and avoid the formation of vortex at the bottom of the sealing plate 41, the thickness of the sealing plate 41 is the same as the depth of the fixing groove.

[0055] In order to ensure the smooth outflow of the medium and the operation of the pressure relief hole 5, the lower end surface of the connecting platform 21 is flush with the upper side of the pressure relief hole 5.

[0056] The one-way valve assembly for a mud pump comprises a valve body, the upper end of which is fixedly connected to the one-way valve cover for the mud pump.

[0057] A mud pump, wherein the one-way valve of the mud pump is the above-mentioned one-way valve assembly for the mud pump.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. Check valve cover for mud pump, including: The cover body (1) is characterized in that it further comprises: a connecting piece (2), a connecting tube (3) and a sliding tube (4); a connecting hole (11) is provided at the center of the cover body (1), the connecting piece (2) is fixedly connected to the connecting hole (11), the other end of the connecting piece (2) is integrally formed or fixedly connected to the connecting tube (3), and the inner wall of the connecting tube (3) is fixedly connected to the sliding tube (4); A pressure relief hole (5) is provided through the side walls of the sliding cylinder (4) and the connecting cylinder (3).

2. The one-way valve cover for a mud pump according to claim 1, characterized in that: The lower end of the connection hole (11) is a stepped hole, and the connection piece (2) is a stepped rod, which is cooperatively connected inside the stepped hole.

3. The one-way valve cover for a mud pump according to claim 2, characterized in that: A connecting platform (21) is integrally formed at the lower end of the connecting piece (2), and the diameter of the connecting platform (21) is greater than the maximum diameter of the stepped hole.

4. The one-way valve cover for a mud pump according to claim 3, characterized in that: The connecting tube (3) is integrally formed at the lower end of the connecting platform (21).

5. The one-way valve cover for a mud pump according to claim 4, characterized in that: The connecting platform (21) is provided with a connecting groove in the middle of the connecting cylinder (3), and the upper end of the sliding cylinder (4) extends into the connecting groove; A sealing plate (41) is integrally formed at the upper end of the sliding cylinder (4), and the thickness of the sealing plate (41) is the same as the depth of the connecting groove.

6. The one-way valve cover for a mud pump according to claim 5, characterized in that: The pressure relief hole (5) is formed at one end of the connecting tube (3) close to the connecting platform (21).

7. The one-way valve cover for a mud pump according to claim 3, characterized in that: A fixing groove is provided at the center of the lower end of the connecting platform (21), and the upper end of the connecting tube (3) is fixedly connected to the inside of the fixing groove.

8. The one-way valve cover for a mud pump according to claim 7, characterized in that: The upper end of the sliding cylinder (4) extends into the fixing groove; A sealing plate (41) is integrally formed at the upper end of the sliding cylinder (4), and the thickness of the sealing plate (41) is the same as the depth of the fixing groove; The lower end surface of the connecting platform (21) is flush with the upper side of the pressure release hole (5).

9. A one-way valve assembly for a mud pump, comprising: The valve body is characterized in that the upper end of the valve body is fixedly connected to the one-way valve cover for a mud pump according to any one of claims 1 to 8.

10. A mud pump, characterized in that: The one-way valve for the mud pump is the one-way valve assembly for the mud pump as claimed in claim 9.

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