Flow pump

Abstract

According to the technical scheme, the flow pump is characterized in that the flow pump comprises a power sleeve, a longitudinal flow cover located at one end of the power sleeve, a line cover located at the other end of the power sleeve, a nozzle switch rotationally connected to the line cover, a gun rack located on the line cover and used for installing a nozzle gun, and a locking piece; the circuit cover comprises a circuit chamber for accommodating a circuit and a cover plate covering an opening of the circuit chamber, the plane where the cover plate is located is located in the diameter direction of the circuit cover, and the opening of the circuit chamber is located on one side of the plane where the axis of the circuit cover is located and faces the direction away from the plane where the axis of the circuit cover is located. The problems of complex maintenance operation and low maintenance efficiency in the prior art are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pumps, and more particularly to a flow pump. Background Art

[0002] A flow pump is a mechanical device that transports or pressurizes fluids. It transfers the mechanical energy of a prime mover or other external energy to the liquid, increasing the liquid's energy. Flow pumps are primarily used to transport liquids such as water, oil, acid and alkali solutions, emulsions, suspensoids, and liquid metals. They can also transport liquid-gas mixtures and liquids containing suspended solids. Existing flow pumps include a power sleeve, a flow guide cap positioned at one end of the power sleeve, a circuit cover positioned at the other end of the power sleeve, a nozzle switch rotatably connected to the circuit cover, and a gun mount positioned on the circuit cover for mounting the nozzle gun. The circuit cover includes a circuit chamber for accommodating the circuits and a cover plate that covers the opening of the circuit chamber. In existing technology, the cover plate and gun mount are positioned on the same side of the circuit cover, with the gun mount partially or completely hidden from view. In the event of a circuit failure, maintenance personnel must remove the gun mount before disassembling the cover plate and accessing the circuit within the circuit chamber. This results in cumbersome and inefficient maintenance. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a flow pump that is convenient for repairing circuits.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a flow pump, comprising a power sleeve, a longitudinal flow cover positioned at one end of the power sleeve, a circuit cover positioned at the other end of the power sleeve, a nozzle switch rotatably connected to the circuit cover, a gun holder and a lock positioned on the circuit cover for mounting a nozzle gun, the circuit cover comprising a circuit chamber for accommodating a circuit and a cover plate covering an opening of the circuit chamber, the plane on which the cover plate is located being located in the diameter direction of the circuit cover, the opening of the circuit chamber being located on one side of the plane on which the axis of the circuit cover is located and facing in a direction away from the plane on which the axis of the circuit cover is located.

[0005] As a further improvement of the present invention, the plane where the cover plate is located is perpendicular to the diameter direction of the circuit cover.

[0006] As a further improvement of the present invention, the cover plate is located on a diameter of the circuit cover that is parallel to the horizontal plane.

[0007] As a further improvement of the present invention, a longitudinal flow channel perpendicular to the horizontal plane is provided inside the longitudinal flow cover, and the longitudinal flow cover is provided with an upper end hole whose axis is parallel to the length direction of the longitudinal flow channel and connected to the longitudinal flow channel, and a lower end hole whose axis is perpendicular to the length direction of the longitudinal flow channel and connected to the longitudinal flow channel. The upper and lower sides of the longitudinal flow cover are respectively provided with an upper guide pipe connected to the upper end hole and a support connecting pipe connected to the lower end hole and used for an external pipeline, and the support connecting pipe is located directly below the power sleeve.

[0008] As a further improvement of the present invention, a check valve coaxial with the lower end hole and a safety valve positioned on the check valve are provided in the support connecting pipe.

[0009] As a further improvement of the present invention, the longitudinal flow cover is replaced by a transverse flow cover, and the supporting connecting pipe is replaced by a connecting frame. A transverse flow channel perpendicular to the vertical plane where the axis of the transverse flow cover is located is provided inside the transverse flow cover, and the two ends of the transverse flow channel extend to the two opposite side walls of the transverse flow cover respectively, and the connecting frame is positioned directly below the power sleeve.

[0010] As a further improvement of the present invention, the connecting frame includes an arc-shaped support portion that can fit with the outer wall of the power sleeve and two supporting legs respectively located on both sides of the support portion and used for externally connecting to a workbench.

[0011] As a further improvement of the present invention, the two supporting legs are arranged in an "eight" shape.

[0012] The beneficial effects of the present invention are as follows: the opening of the circuit chamber is directed toward the outside of the outer wall of the power sleeve, and the plane where the circuit chamber opening is located is located in the diameter direction of the circuit cover. During the maintenance process, the maintenance personnel can stand on one side of the circuit cover to remove the cover plate. Compared with the existing technology, this design changes the opening direction of the circuit chamber, effectively avoiding the phenomenon that the gun rack obstructs the cover plate, and facilitates the maintenance personnel to disassemble and assemble the cover plate without removing the gun rack, effectively simplifying the maintenance operation and indirectly improving the maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a three-dimensional diagram of the utility model when equipped with a longitudinal flow cover;

[0014] Figure 2 This is an exploded view of the utility model when a longitudinal flow cover is installed;

[0015] Figure 3 This is a three-dimensional diagram of the utility model when equipped with a cross-flow cover;

[0016] Figure 4 It is a three-dimensional cross-sectional view of the supporting connecting pipe in the present invention.

[0017] Figure numerals: 1. power sleeve; 2. longitudinal flow cover; 21. longitudinal flow channel; 22. upper end hole; 23. lower end hole; 24. support connecting pipe; 25. check valve; 251. check valve seat; 252. check valve disc; 253. check valve stem; 254. check spring; 255. check plate; 256. pressure relief groove; 257. pressure relief hole; 26. safety valve; 27. upper guide pipe; 3. line cover; 31. line chamber; 32. cover plate; 4. nozzle switch; 5. gun mount; 6. cross flow cover; 61. cross flow channel; 7. connecting frame; 71. support part; 72. support foot; 8. locking part. DETAILED DESCRIPTION

[0018] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments, wherein the same components are denoted by the same reference numerals.

[0019] Reference Figures 1 to 4 As shown, a flow pump of this embodiment includes a power sleeve 1, a longitudinal flow cover 2 positioned at one end of the power sleeve 1, a circuit cover 3 positioned at the other end of the power sleeve 1, a nozzle switch 4 rotatably connected to the circuit cover 3, a gun holder 5 positioned on the circuit cover 3 and for mounting a nozzle gun, and a lock member 8. One end of the lock member 8 is positioned on the circuit cover 3, and the other end of the lock member 8 is located at a height lower than that of the gun holder 5 and has a lock hole formed on the end. After the nozzle gun is inserted into the gun holder 5, a pin or a key can be simultaneously inserted into the nozzle gun and the lock hole to fix the nozzle gun relative to the circuit cover 3. The circuit cover 3 includes a circuit chamber 31 for accommodating a circuit and a cover plate 32 covering the opening of the circuit chamber 31.

[0020] Based on the above-mentioned prior art, the opening of the circuit chamber 31 is directed toward the outer side of the outer wall of the power sleeve 1, and the plane where the opening of the circuit chamber 31 is located is located in the diameter direction of the circuit cover 3. During the maintenance process, the maintenance personnel can stand on one side of the circuit cover 3 to remove the cover plate 32. The cover plate 32 is moved away from the circuit chamber 31 in the radial direction of the circuit cover 3. Then, the maintenance personnel can inspect the circuit in the inner cavity of the circuit chamber 31. After the maintenance is completed, the cover plate 32 is moved back toward the circuit chamber 31 in the diameter direction of the circuit cover 3. After the cover plate 32 is re-covered on the opening of the circuit chamber 31, the cover plate 32 is re-positioned on the circuit chamber 31 using bolts;

[0021] Compared with the prior art, this design changes the opening direction of the circuit chamber 31, effectively avoiding the phenomenon that the gun rack 5 obstructs the cover 32, and facilitates maintenance personnel to disassemble and assemble the cover 32 without removing the gun rack 5, effectively simplifying the maintenance operation and indirectly improving the maintenance efficiency.

[0022] As a specific embodiment of the improvement, refer to Figures 1 to 3As shown, the plane where the cover plate 32 is located is perpendicular to the diameter direction of the circuit cover 3. Compared with the design in which the angle between the plane where the cover plate 32 is located and the diameter direction of the circuit cover 3 is an acute angle or an obtuse angle, such a design can reduce the difficulty of processing the holes on the cover plate 32 for the bolts to pass through, effectively improve the accuracy of the position of the holes on the cover plate 32 and ensure that they correspond one to one with the threaded holes on the circuit chamber 31. At the same time, it can also make the overall structure of the circuit cover 3 more compact and reduce the interference of the outside world on the circuit cover 3.

[0023] As an improved specific implementation method, if the cover plate 32 is set below the circuit cover 3, the circuit chamber 31 opens downward. After the cover plate 32 is opened, the circuits inside the circuit chamber 31 fall out of the circuit chamber 31 under the action of gravity, which affects the maintenance efficiency and greatly interferes with the operation of reinstalling the cover plate 32; if the cover plate 32 is set above the circuit cover 3, the circuit chamber 31 opens upward, and the circuits in the circuit chamber 31 are superimposed together under the action of gravity. After the maintenance personnel open some of the circuits, the circuits will reclose together and move downward, which will also affect the maintenance efficiency. In order to solve the above two problems, refer to Figures 1 to 3 As shown, the cover plate 32 is set on the diameter of the line cover 3 parallel to the horizontal plane, and the cover plate 32 is located on one side of the line cover 3 and perpendicular to the horizontal plane. Such a design can greatly reduce the impact of gravity on the line, and effectively improve the maintenance efficiency of the line; at the same time, in terms of human-computer interaction, the maintenance personnel can look straight into the inner cavity of the line chamber 31, effectively avoiding the phenomenon of neck discomfort caused by looking up or down, thereby improving the comfort of human-computer interaction.

[0024] As a specific embodiment of the improvement, refer to Figure 2 As shown, the upper end hole 22 and the longitudinal flow channel 21 that are interconnected are formed by drilling downward from the upper surface of the longitudinal flow cover 2. The longitudinal flow channel 21 is perpendicular to the horizontal plane. Subsequently, a lower end hole 23 that passes through the longitudinal flow cover 2 is processed on the end surface of the longitudinal flow cover 2 that is perpendicular to the axis of the power sleeve 1. The lower end hole 23 is connected to the longitudinal flow channel 21. The upper surface of the longitudinal flow cover 2 is detachably connected to an upper guide pipe 27 that is connected to the upper end hole 22. The two orifices of the lower end hole 23 are detachably connected to connecting bolts and supporting connecting pipes 24, respectively. The connecting bolts are connected to the components inside the supporting connecting pipe 24. The supporting connecting pipe 24 is L-shaped and Located directly below the power sleeve 1, in actual use, the end of the support connecting pipe 24 that is not connected to the longitudinal flow cover 2 passes through the workbench and is connected to the pipeline or is directly connected to the pipeline, then the power sleeve 1 is suspended in the air and fixed relative to the pipeline, and the liquid in the support connecting pipe flows from bottom to top along the longitudinal flow channel 21. Such design enables the utility model to be used in pipelines with vertical flow direction; the design of the support connecting pipe 24 being located directly below the power sleeve 1 can be close to or coincide with the center of gravity of the power sleeve 1, effectively avoiding the phenomenon of center of gravity shift of the pipeline after being connected to the power sleeve 1, and indirectly ensuring the structural stability of the pipeline.

[0025] As a specific embodiment of the improvement, refer to Figure 4 As shown, a check valve 25 coaxial with the lower end hole 23 and a safety valve 26 positioned on the check valve 25 are provided in the support connecting pipe 24. A step is provided on the inner wall of the support connecting pipe 24. The check valve 25 includes a check valve seat 251 positioned at the step, a check valve flap 252 capable of forming a hard seal with the check valve seat 251, a check valve stem 253 integrally formed with the check valve flap 252, a check spring 254 sleeved on the outside of the check valve stem 253, and a check plate 254 positioned at the end of the check valve stem 253 and in contact with one end of the check spring 254. 55. The other end of the check spring 254 contacts the check valve seat 251. A pressure relief groove 256 is provided at the center of the check valve disc 252 for the insertion and positioning of the safety valve 26 and extending into the check valve stem 253. A pressure relief hole 257 is provided on the peripheral wall of the check valve stem 253 to communicate with the pressure relief groove 256. The safety valve 26 and the pressure relief groove 256 are sealed. The two ends of the valve stem of the safety valve 26 are located in the pressure relief groove 256 and outside the pressure relief groove 256 respectively. When the liquid flows from bottom to top, the liquid pushes the check valve disc 252 and the check valve seat 251 When the check valve flap 252 and the check valve seat 251 are in the closed state and the pressure in the longitudinal cover 2 is too high, the valve stem of the safety valve 26 is pushed into the pressure relief groove 256. , the spring inside the safety valve 26 is deformed, the safety valve 26 is opened and communicated with the inner cavity of the pressure relief groove 256, and the gas or liquid in the longitudinal cover 2 flows through the safety valve 26, the pressure relief groove 256 and the pressure relief hole 257 in turn and enters the supporting connecting pipe 24 for pressure relief. When the pressure in the longitudinal cover 2 drops to a predetermined value, the safety valve 26 returns to a closed state under the elastic force of the internal spring. Such a design not only ensures that the liquid backflow is avoided during normal use, but also ensures that the pressure in the longitudinal cover 2 tends to a stable value, thereby indirectly improving the safety of use.

[0026] As a specific embodiment of the improvement, refer to Figure 3As shown, the longitudinal flow cover 2 is replaced by a transverse flow cover 6. The transverse flow cover 6 and the longitudinal flow cover 2 are connected to the power sleeve 1 in the same way. A transverse flow channel 61 perpendicular to the vertical plane where the axis of the transverse flow cover 6 is located is provided inside the transverse flow cover 6. The two ends of the transverse flow channel 61 extend to the two opposite side walls of the transverse flow cover 6 respectively. The supporting connecting pipe 24 is replaced by a connecting frame 7. The functions of the connecting frame 7 and the supporting connecting pipe 24 are both to support the power sleeve 1, but there is a difference in the connection method. The connecting frame 7 is positioned directly below the power sleeve 1 by a detachable connection or adhesion. The connecting frame 7 includes an arc-shaped support portion 71 that can fit with the outer wall of the power sleeve 1 and two support legs 72 that are respectively located on both sides of the support portion 71 and are used for an external workbench. The two support legs 72 are arranged in an "eight" shape, and the two support legs 72 are detachably connected to the workbench. The transverse flow channel 61 Parallel to the horizontal plane, both ends of the cross-flow cover 6 can be connected to external pipes, so the flow direction of the liquid flowing through the cross-flow cover 6 is horizontal. Such a design enables the utility model to be used in pipes with horizontal flow; the design of the connecting frame 7 can provide support for the power sleeve 1, avoiding the phenomenon of center of gravity shift of the pipeline after being connected to the power sleeve 1, indirectly ensuring the structural stability of the pipeline; the arc-shaped design of the support part 71 can increase the contact surface between the support part 71 and the power sleeve 1, indirectly improving the supporting effect. At the same time, when the power sleeve 1 moves downward relative to the support part 71, the axis of the power sleeve 1 and the axis of the support part 71 are in the same vertical plane, ensuring that the support part 71 is evenly stressed; the two support legs 72 are in an eight-shaped design, which can improve the bending resistance of the support legs 72 compared to the design in which both support legs 72 are perpendicular to the horizontal plane, and effectively improve the structural stability of the support legs 72.

[0027] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A flow pump, comprising a power sleeve (1), a longitudinal flow cover (2) positioned at one end of the power sleeve (1), a circuit cover (3) positioned at the other end of the power sleeve (1), a nozzle switch (4) rotatably connected to the circuit cover (3), a gun holder (5) and a lock (8) positioned on the circuit cover (3) for mounting a nozzle gun, wherein the circuit cover (3) comprises a circuit chamber (31) for accommodating a circuit and a cover plate (32) covering an opening of the circuit chamber (31), characterized in that: The plane where the cover plate (32) is located is located in the diameter direction of the circuit cover (3), and the opening of the circuit chamber (31) is located on one side of the plane where the axis of the circuit cover (3) is located and faces a direction away from the plane where the axis of the circuit cover (3) is located.

2. A flow pump according to claim 1, characterized in that: The plane where the cover plate (32) is located is perpendicular to the diameter direction of the circuit cover (3).

3. A flow pump according to claim 2, characterized in that: The cover plate (32) is located on a diameter of the circuit cover (3) that is parallel to the horizontal plane.

4. A flow pump according to claim 1, 2 or 3, characterized in that: The longitudinal flow cover (2) is provided with a longitudinal flow channel (21) perpendicular to the horizontal plane inside, the longitudinal flow cover (2) is provided with an upper end hole (22) whose axis is parallel to the length direction of the longitudinal flow channel (21) and is in communication with the longitudinal flow channel (21), and a lower end hole (23) whose axis is perpendicular to the length direction of the longitudinal flow channel (21) and is in communication with the longitudinal flow channel (21), the longitudinal flow cover (2) is provided with a supporting connecting pipe (24) in communication with the lower end hole (23) and used for external piping, and the supporting connecting pipe (24) is located directly below the power sleeve (1).

5. A flow pump according to claim 4, characterized in that: A check valve (25) coaxial with the lower end hole (23) and a safety valve (26) positioned on the check valve (25) are provided in the supporting connecting pipe (24).

6. A flow pump according to claim 4, characterized in that: The longitudinal flow cover (2) is replaced by a transverse flow cover (6), and the supporting connecting pipe (24) is replaced by a connecting frame (7). A transverse flow channel (61) perpendicular to the vertical plane where the axis of the transverse flow cover (6) is located is provided inside the transverse flow cover (6), and the two ends of the transverse flow channel (61) respectively extend to the two opposite side walls of the transverse flow cover (6), and the connecting frame (7) is positioned directly below the power sleeve (1).

7. A flow pump according to claim 6, characterized in that: The connecting frame (7) comprises an arc-shaped support portion (71) capable of being fitted with the outer wall of the power sleeve (1) and two supporting legs (72) respectively located on both sides of the support portion (71) and used for externally connecting to a workbench.

8. A flow pump according to claim 7, characterized in that: The two supporting legs (72) are arranged in an "eight" shape.

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