Pump head body with pressure relief structure

Abstract

The utility model relates to the technical field of pumps, and discloses a pump head body with a pressure relief structure, which comprises a pump head body, a pressure relief mechanism is arranged right above the outer surface of the pump head body, and the pressure relief mechanism comprises a fixed pipe; the outer surface of the lower end of the fixing pipe is fixedly connected with the interior of the pump head body, a concave block is fixedly connected to the cavity wall of the lower end in the fixing pipe, a blocking plate is attached to the upper surface of the concave block, and a first limiting rod is fixedly connected to the middle of the upper surface of the blocking plate. According to the pump head body with the pressure relief structure, pressure relief adjustment can be effectively carried out when the pressure in the pump head body is too large, so that it is guaranteed that the pump head body can work normally, meanwhile, the elastic coefficient of a spring can be changed by rotating an adjusting handle and adjusting the position of a movable block in a fixed pipe, and therefore the pump head body can work normally. And therefore, the pressure relief strength of the pressure relief mechanism can be adjusted according to different flowing media in the pump head body, and the practicability of the pressure relief mechanism is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pump technical field, concretely is a kind of pump head body with pressure relief structure. BACKGROUND

[0002] Pump technical field covers the design, manufacture, maintenance and application of various types of pumps, including centrifugal pump, diaphragm pump, plunger pump, submersible pump, etc., and pump head body is a key component of pump, and its design and function are closely related to the overall performance, safety and reliability of pump.

[0003] And the pump head body does not fully consider the pressure relief problem in design, completely relies on the pressure relief device such as safety valve additionally arranged in system, this mode not only increases the complexity and cost of system, and due to the device such as safety valve and pump head body is relatively independent, when pressure mutation, it is difficult to achieve rapid and accurate response, so that pump head body cannot be protected in time in the initial stage of pressure anomaly, part of conventional pump head body is provided with simple pressure relief structure, but its pressure relief threshold setting is often fixed, cannot be flexibly adjusted according to the change of actual working condition.

[0004] Based on this, it is necessary to provide a kind of pump head body with pressure relief structure. INVENTION CONTENTS

[0005] In view of the deficiencies of prior art, the utility model provides a kind of pump head body with pressure relief structure, with the advantages of effectively relieving pressure to pump head body, avoiding overpressure to affect the normal work of pump head body, and adjusting the strength of pressure relief according to different fluid media, solving the problems raised in the background art.

[0006] The utility model provides the following technical scheme: a kind of pump head body with pressure relief structure, including pump head body:

[0007] The outer surface of the pump head body is provided with a pressure relief mechanism directly above, and the pressure relief mechanism includes a fixed pipe;

[0008] The lower end outer surface of the fixed pipe is fixedly connected with the inside of the pump head body, the inside lower end cavity wall of the fixed pipe is fixedly connected with a concave block, the upper surface of the concave block is attached with a plug plate, the upper surface of the plug plate is fixedly connected with a limit rod one in middle position, the inside upper end wall of the fixed pipe is screw-connected with a movable block, the lower surface of the movable block is fixedly connected with a limit rod two in middle position, the upper surface of the plug plate is provided with a spring, the other end of the spring is attached with the lower surface of the movable block, the inside two ends of the spring are attached with the outer surfaces of the limit rod one and the limit rod two respectively, and a pressure relief hole is formed in the middle position of the concave block.

[0009] Preferably, the upper surface of the fixed pipe is provided with a notch, and an adjusting handle is rotatably connected in the notch.

[0010] Preferably, one side of the fixed pipe is fixedly connected with a pressure relief pipe.

[0011] Preferably, one end of the pump head body is provided with a driving assembly, the other end of the pump head body is provided with a connecting pipeline two, the side of the pump head body is provided with a connecting pipeline one, and the ends of the connecting pipeline two and the connecting pipeline one are provided with flanges.

[0012] Preferably, the outer surface of the blocking plate is attached to the inner wall of the fixed pipe, the diameter of the blocking plate is consistent with that of the concave block, and the diameter of the pressure relief hole is smaller than that of the blocking plate.

[0013] Preferably, the outer surface of the movable block is provided with a thread required for connection, the upper end of the cavity wall of the fixed pipe is provided with a thread groove required for connection, and the height of the thread groove is smaller than half the height of the fixed pipe.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The pump head body with the pressure relief structure is provided with the pressure relief mechanism, when the internal pressure of the pump head body is too large, the pressure acts on the blocking plate through the pressure relief hole, the blocking plate is pushed to move upward in the fixed pipe, and the spring is compressed, at this time, the pressure relief pipe arranged on one side of the fixed pipe is used for pressure relief, when the internal pressure of the pump head body gradually returns to the balance state, the pressure acting on the blocking plate gradually becomes small, the lower surface of the blocking plate is attached to the upper surface of the concave block through the action of the spring, at this time, the pressure relief hole is blocked, the structure can effectively relieve pressure when the internal pressure of the pump head body is too large, so that the pump head body can normally work, and the position of the movable block in the fixed pipe can be adjusted by rotating the adjusting handle, so that the spring coefficient is changed, and then the pressure relief strength of the pressure relief mechanism can be adjusted according to the different flowing medium in the pump head body, and the practicability of the pressure relief mechanism is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without paying creative labor.

[0017] Figure 1 It is the whole structure schematic diagram of the utility model device;

[0018] Figure 2 It is partial structure schematic view of pressure relief mechanism of the utility model;

[0019] Figure 3 It is internal section structure schematic view of fixed pipe of the utility model.

[0020] In the drawings, the component list represented by each sign is as follows:

[0021] 1, pump head body;110, connecting pipeline one;120, connecting pipeline two;130, driving assembly;

[0022] 2, pressure relief mechanism;210, fixed pipe;220, adjusting handle;230, pressure relief pipe;240, concave block;241, pressure relief hole;250, plug plate;251, limit rod one;260, spring;270, movable block;271, limit rod two. Specific implementation

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Please refer to Figure 1 , Figure 2 and Figure 3 , a kind of pump head body with pressure relief structure, including pump head body 1:

[0025] The outer surface of pump head body 1 is provided with pressure relief mechanism 2 directly above, and pressure relief mechanism 2 includes fixed pipe 210;

[0026] The lower end outer surface of the fixed pipe 210 is fixedly connected with the interior of the pump head body 1, the interior lower end cavity wall of the fixed pipe 210 is fixedly connected with a concave block 240, the upper surface of the concave block 240 is attached with a plugging plate 250, the upper surface middle position of the plugging plate 250 is fixedly connected with a limiting rod one 251, the interior upper end wall of the fixed pipe 210 is screwedly connected with a movable block 270, the lower surface middle position of the movable block 270 is fixedly connected with a limiting rod two 271, the upper surface of the plugging plate 250 is provided with a spring 260, the other end of the spring 260 is attached with the lower surface of the movable block 270, the interior two ends of the spring 260 are respectively attached with the outer surfaces of the limiting rod one 251 and the limiting rod two 271, the middle position of the concave block 240 is provided with a pressure relief hole 241, the upper surface of the fixed pipe 210 is provided with a notch, and the interior of the notch is rotatably connected with an adjusting handle 220, the lower end of the adjusting handle 220 is fixedly connected with the upper surface middle position of the movable block 270, and one side of the fixed pipe 210 is fixedly connected with a pressure relief pipe 230.

[0027] When the interior pressure of the pump head body 1 is too large, the pressure acts on the plugging plate 250 through the pressure relief hole 241, the plugging plate 250 is pushed to move upwards in the interior of the fixed pipe 210, and the spring 260 is compressed, at this time, pressure relief is carried out through the pressure relief pipe 230 arranged on one side of the fixed pipe 210, when the pressure in the interior of the pump head body 1 gradually recovers to a balanced state, the pressure acting on the plugging plate 250 gradually becomes small, and the lower surface of the plugging plate 250 is attached to the upper surface of the concave block 240 through the action of the spring 260, at this time, the pressure relief hole 241 is blocked.

[0028] Further, the position of the movable block 270 in the interior of the fixed pipe 210 can be adjusted by rotating the adjusting handle 220, so that the elastic coefficient of the spring 260 is changed, and then the pressure relief intensity at the pressure relief mechanism 2 can be adjusted according to different flowing media in the interior of the pump head body 1.

[0029] As a preferred technical scheme of the utility model, one end of the pump head body 1 is provided with a driving assembly 130, the other end of the pump head body 1 is provided with a connecting pipeline two 120, and the side edge of the pump head body 1 is provided with a connecting pipeline one 110; the end portions of the connecting pipeline two 120 and the connecting pipeline one 110 are provided with flanges.

[0030] The driving assembly 130 is used for providing fluid medium flowing force for the pump head body 1; the connecting pipeline one 110 and the connecting pipeline two 120 are connected with the pipeline at the fluid medium source and the pipeline at the fluid medium flowing direction respectively through the flanges.

[0031] As a preferred technical scheme of the utility model, the outer surface of the plugging plate 250 is attached with the inner wall of the fixed pipe 210, the diameters of the plugging plate 250 and the concave block 240 are consistent, and the hole diameter of the pressure relief hole 241 is smaller than the diameter of the plugging plate 250.

[0032] As a preferred technical scheme of the utility model, the outer surface of the movable block 270 is provided with a thread required for connection, a thread groove required for connection is formed on the cavity wall of the fixed tube 210, and the height of the thread groove is less than half the height of the inside of the fixed tube 210.

[0033] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "central", "both ends" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0034] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connecting", "fixing", "screw connection" and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements or the interaction relationship of two elements, unless otherwise explicitly limited, the above-mentioned terms in the utility model can be understood according to the specific meaning in the utility model by the ordinary skilled in the art according to the specific situation.

[0035] Although the embodiments of the utility model have been shown and described, it can be understood by the ordinary skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A pump head body with pressure relief structure, comprising a pump head body (1), characterized in that: The outer surface of the pump head body (1) is provided with a pressure relief mechanism (2) directly above, and the pressure relief mechanism (2) comprises a fixed pipe (210); The lower end of the outer surface of the fixed pipe (210) is fixedly connected with the inside of the pump head body (1), the inside of the lower end of the fixed pipe (210) is fixedly connected with a concave block (240), the upper surface of the concave block (240) is attached with a plug plate (250), the upper surface of the plug plate (250) is fixedly connected with a limiting rod one (251) at the middle position, the inside of the upper end wall of the fixed pipe (210) is threadedly connected with a movable block (270), the lower surface of the movable block (270) is fixedly connected with a limiting rod two (271) at the middle position, the upper surface of the plug plate (250) is provided with a spring (260), the other end of the spring (260) is attached with the lower surface of the movable block (270), the inside of the spring (260) is attached with the outer surfaces of the limiting rod one (251) and the limiting rod two (271) respectively, and the middle position of the concave block (240) is provided with a pressure relief hole (241).

2. The pump head according to claim 1, wherein: The upper surface of the fixed pipe (210) is provided with a notch, and the inside of the notch is rotatably connected with an adjusting handle (220), and the lower end of the adjusting handle (220) is fixedly connected with the upper surface of the movable block (270) at the middle position.

3. The pump head of claim 1, wherein: One side of the fixed pipe (210) is fixedly connected with a pressure relief pipe (230).

4. The pump head of claim 1, wherein: One end of the pump head body (1) is provided with a driving assembly (130), the other end of the pump head body (1) is provided with a connecting pipeline two (120), the side of the pump head body (1) is provided with a connecting pipeline one (110), and the end portions of the connecting pipeline two (120) and the connecting pipeline one (110) are provided with flanges.

5. The pump head of claim 1, wherein: The outer surface of the plug plate (250) is attached with the inner wall of the fixed pipe (210), the diameters of the plug plate (250) and the concave block (240) are consistent, and the hole diameter of the pressure relief hole (241) is smaller than the diameter of the plug plate (250).

6. The pump head of claim 1, wherein: The outer surface of the movable block (270) is provided with a thread required for connection, and the upper end of the cavity wall of the fixed pipe (210) is provided with a thread groove required for connection, and the height of the thread groove is smaller than half the height of the inside of the fixed pipe (210).

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