WO2022156310A1

WO2022156310A1 - Pump body clamping device and pump

Info

Publication number: WO2022156310A1
Application number: PCT/CN2021/129265
Authority: WO
Inventors: 陈松林; 吴衍; 孙未
Original assignee: 惠州海卓科赛医疗有限公司
Priority date: 2021-01-19
Filing date: 2021-11-08
Publication date: 2022-07-28
Also published as: CN214464868U

Abstract

A pump body clamping device, comprising a clamping seat (2) fixed at one side of a box body (4), the clamping seat (2) being provided with a first channel (21) penetrating through both sides thereof, a first end of the first channel (21) being configured to allow for the insertion of a push rod (5), and a second end of the first channel (21) being configured to allow for the screwing of a pump body (1); and a pump body seat (3) provided inside the first channel (21) and being capable of rotating relative to the clamping seat (2), the pump body seat (3) being provided with a second channel (31) penetrating through both sides thereof and allowing for the insertion and clamping of the pump body (1). A detection element (22) is provided on the clamping seat (2); an induction body (32) is provided on the pump body seat (3); and when the pump body (1) is inserted into the second channel (31) and screwed along the first channel (21), the pump body seat (3) rotates in the first channel (21), such that the induction body (32) is located within a detection range of the detection element (22). By detecting the screwing degree of the pump body on the clamping seat, the occurrence of improper screwing of the pump body is avoided, thereby improving the use safety.

Description

A pump body clamping device and pump

technical field

The present application relates to the technical field of pumps, and in particular, to a pump body clamping device and a pump.

Background technique

At present, the working principle of some jet pumps is as follows: the cam structure or the eccentric shaft connecting rod structure is used to drive the turntable to perform circular motion, and the circular motion of the turntable is converted into the linear reciprocating motion of the push rod, and then the reciprocating movement of the push rod makes The piston in the pump body pressurizes the liquid to form a jet stream. Generally, the above-mentioned jet pump includes a box body, a pump body, a push rod and a clamping seat, the inside of the pump body is for fluid to flow through, and the pump body includes a piston cylinder and a piston, and the push rod is arranged inside the box body and can The body performs linear reciprocating motion, and the pump body is fixed on the box body by the clamping fixed seat, so that the push rod can drive the piston to move back and forth in the piston cylinder, so that the pressure in the piston cylinder changes, and then the fluid on the pump body is pressurized .

In the prior art, the pump body is connected to the clamping and fixing seat by means of internal and external threads. Therefore, whether the pump body is rotated in place after being inserted into the clamping and fixing seat may be judged inaccurately by simply relying on hand feel or experience. lead to equipment failure or even an accident.

Application content

The purpose of the present application is to provide a pump body clamping device, which can detect the screwing degree of the pump body on the clamping fixed seat, avoid the occurrence of the pump body not screwed in place, and improve the safety of use. In addition, the purpose of the present application is to provide a pump using the above-mentioned pump body clamping device.

In order to achieve the above purpose, a first aspect of the present application provides a pump body clamping device, comprising:

The clamping seat is used to be fixed on one side of the box body, the clamping seat is provided with a first channel running through both sides of the clamping seat, the first end of the first channel is used for the insertion of the push rod, the first channel is The second end of a channel is used for the pump body to be screwed in;

A pump body seat, which is arranged in the first passage and can rotate relative to the clamping seat, and the pump body seat is provided with a second passage that runs through its both sides and is used for the insertion and clamping of the pump body;

Wherein, the clamping seat is provided with a detection element, and the pump body seat is provided with an induction body; when the pump body is inserted into the second channel and screwed in along the first channel, the pump body seat is Rotate in the first channel so that the induction body is located within the detection range of the detection element.

Further, the detection element is a proximity sensor.

Further, the induction body is a convex block provided on the outer side wall of the pump body seat, and the clamping seat is provided with a slot hole for the induction body to pass through.

Further, the detecting element has a sensing surface for detecting the sensing body, the sensing surface of the detecting element is circular, the outer diameter of the sensing surface of the detecting element is 0.5-20 mm, and the The minimum distance between the sensing surface and the sensing body is 0-20mm.

Further, an inner thread structure is provided on the inner side wall of the second end of the first channel.

Further, the internal thread structure is a trapezoidal thread or a circular thread or a zigzag thread or a square thread.

In order to achieve the above purpose, a second aspect of the present application provides a pump, comprising a pump body, a case body and a push rod disposed in the case body, one end of the push rod protruding from one side of the case body and exposed On the outside of the box body, and the push rod can perform linear reciprocating motion in the box body, and also includes the pump body clamping device described above;

The clamping seat is fixed on one side of the box body, and one end of the push rod protruding from the box body is inserted into the second channel along the first end of the first channel.

Further, the pump body includes a piston cylinder and a piston slidably arranged in the piston cylinder, one end of the piston cylinder passes through the first passage and is inserted into the second passage, and the piston is nested in the second passage. The push rod protrudes from one end of the box body.

Further, the box body is also provided with a drive shaft and a turntable sleeved on the drive shaft; the drive shaft is eccentrically arranged relative to the turntable, and the push rod is located at one end face of the box body. abutting against the outer side wall of the turntable.

Further, a sliding bearing for the push rod to pass through is also provided in the box.

Compared with the prior art, a pump body clamping device according to the embodiment of the present application has the following beneficial effects:

In the present application, a detection element is arranged on the clamping seat, and an induction body is arranged on the pump body seat. When the pump body is inserted into the second channel of the pump body seat and screwed in along the first channel for installation, the detection element detects The position of the induction body is used to judge the screwing degree of the current pump body and the clamping seat. If the induction body is within the detection range of the detection element, it means that the current pump body has been screwed in place, and the rotation of the pump body can be ended; if the induction body is not within the detection range of the detection element, it means that the current pump body is not screwed in When the pump body is in place, it is necessary to continue to rotate the pump body to adjust the sensing body to the detection range of the detection element.

Description of drawings

Fig. 1 is the sectional view of the pump body clamping device of the present application and the connection of the casing;

Fig. 2 is the sectional view of the pump body of the present application, the pump body clamping device and the casing connection;

Fig. 3 is the side view of the pump body clamping device of the present application and the case body connection;

In the figure,

1-pump body, 11-piston cylinder, 12-piston, 13-first pipeline, 14-second pipeline;

2-clamping seat, 21-first channel, 211-internal thread, 22-detection element, 221-sensing surface, 23-slot hole;

3-Pump body seat, 31-Second channel, 32-Induction body;

4 - box;

5 - putter;

6- drive shaft;

7 - Turntable;

8 - Sliding bearings.

Detailed ways

The specific implementations of the present application will be described in further detail below with reference to the accompanying drawings and embodiments. The following examples are used to illustrate the present application, but are not intended to limit the scope of the present application.

In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. The relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore It should not be construed as a limitation on this application.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present application, "plurality" means two or more, unless otherwise expressly and specifically defined.

In this application, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of the two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

In this application, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may include the first and second features in direct contact, or may include the first and second features Not directly but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

1-2, the pump body clamping device of the present application includes a clamping seat 2 and a pump body seat 3, the clamping seat 2 is used to be fixed on one side of the box body 4, and the clamping seat 2 is provided with two holes extending through it. The first channel 21 on the side, the first end of the first channel 21 is used for the insertion of the push rod 5, and the second end of the first channel 21 is used for the pump body 1 to be screwed in; the pump body seat 3 is arranged in the first channel 21 Inside and able to rotate relative to the clamping seat 2 , the pump body seat 3 is provided with a second channel 31 which runs through both sides of the pump body and is used for the insertion and clamping of the pump body 1 . At the same time, the clamping seat 2 is provided with a detection element 22, and the pump body seat 3 is provided with an induction body 32; when the pump body 1 is inserted into the second channel 31 and screwed in along the first channel 21, the pump body seat 3 is in the first channel A channel 21 is rotated so that the sensing body 32 is located within the detection range of the detection element 22 .

Based on the above structure, when the pump body 1 is inserted into the second channel 31 of the pump body base 3 and screwed in along the first channel 21 for installation, the detection element 22 detects the position of the induction body 32 to determine the current relationship between the pump body 1 and the card. The screw-in degree of the tight seat 2. If the induction body 32 is located within the detection range of the detection element 22, it means that the current pump body 1 has been screwed into place, and the rotation of the pump body 1 can be ended; if the induction body 32 is not within the detection range of the detection element 22, it means At present, the pump body 1 is not screwed in place, and it needs to continue to rotate the pump body 1 to adjust the sensing body 32 to the detection range of the detection element 22. This can effectively prevent the pump body 1 from being screwed in place and improve the safety of use.

It can be understood that the detection element 22 of the present application is a commonly used sensor, including a contact sensor and a non-contact sensor.

Among them, the contact sensor is such as a resistance strain sensor, and the resistance strain sensor is composed of an elastic sensitive element, a resistance strain gauge, a compensation resistor and a casing. The sensitive element is deformed by force, and the resistance strain gauge attached to it is deformed together, and then the resistance strain gauge converts the deformation into the change of resistance value. When the resistance value of the resistance strain gauge is detected, it can be known The pump body 1 is screwed into place. However, the above-mentioned use of the contact sensor to detect the position of the sensing body 32 requires direct contact between the contact sensor and the sensing body 32. Repeatedly plugging and unplugging the pump body 1 for a long time will cause the sensing body 32 and the contact sensor to wear each other, causing the sensing body 32 or contact Type sensors have a shorter lifespan and reduce equipment reliability.

Therefore, in order to improve the detection accuracy of the detection element 22 and to ensure that the pump body 1 can be repeatedly pulled and inserted into the pump body 1 on the clamping seat 2, the detection element 22 of the present application is preferably a non-contact sensor, such as a proximity sensor, preferably a capacitor Type or inductive proximity sensor, which is less disturbed by the external environment, can be suitable for water mist, oil pollution and other working environments, with high detection accuracy and long service life. When the pump body 1 is inserted into the second channel 31 and screwed in along the first channel 21, the pump body seat 3 rotates in the first channel 21, so that the position of the induction body 32 on the pump body seat 3 changes. When moving into the detection range of the proximity sensor, an electrical signal is generated inside the proximity sensor to prompt the pump body 1 to be screwed into place, so as to ensure the safety of the device.

Further, in order to observe the positional relationship between the sensing body 32 and the detection element 22 with the naked eye, the sensing body 32 is a protrusion provided on the outer side wall of the pump body seat 3, and the clamping seat 2 is provided with a The slot 23 for the induction body 32 to pass through. Wherein, the induction body 32 and the pump body seat 3 can be integrally formed, such as by injection molding, welding or bonding, etc., or they can be detachably connected, such as threaded connection or clip fixing, etc. No restrictions apply.

Further, the detection element 22 has a sensing surface 221 for detecting the sensing body 32, the sensing surface 221 is arranged on one end face of the sensing element 22 and faces the sensing body 32, and the other end of the sensing element 22 is a signal output end, including the power supply positive line , negative line and digital signal output line are respectively used to connect with power supply and digital processing module for data analysis and processing. Further, the detection element 22 is preferably a cylindrical structure, so that the sensing surface 221 of the detection element 22 is circular. Under the permission of the assembly error between the pump body 1 and the clamping seat 2, the sensing surface of the detection element 22 of the present application The outer diameter of 221 is 0.5-20mm, which can be 0.6mm, 1mm, 2mm, 5mm, 10mm, 15mm, etc.; mm, 1mm, 2mm, 5mm, etc. By designing the size and detection range of the sensing surface 221 of the detection element 22 , the detection element 22 can smoothly detect the arc-shaped induction body 32 to ensure detection accuracy. Generally, the smaller the outer diameter of the sensing surface 221 or the minimum distance between the sensing surface 221 and the sensing body 32, the higher the detection accuracy.

In some embodiments, the pump body 1 needs to be fixedly connected to the clamping base 2 after being rotated in the first channel 21. In the present application, an inner thread 211 structure is provided on the inner wall of the second end of the first channel 21, which needs to be installed The outer side wall of the pump body 1 is provided with an external thread structure that engages with the internal thread 211 structure, and the connection between the pump body 1 and the clamping seat 2 is realized by threaded connection. Wherein, the structure of the internal thread 211 of the present application includes one of a trapezoidal thread, a circular thread, a zigzag thread, or a square thread, which is not limited in this application.

In summary, the embodiment of the present application provides a pump body clamping device. When the pump body 1 is inserted into the second channel 31 of the pump body base 3 and screwed in along the first channel 21 for installation, the detection element 22 detects the induction The position of the body 32 is used to judge the screwing degree of the current pump body 1 and the clamping seat 2 . If the induction body 32 is located within the detection range of the detection element 22, it means that the current pump body 1 has been screwed into place, and the rotation of the pump body 1 can be ended; if the induction body 32 is not within the detection range of the detection element 22, it means At present, the pump body 1 is not screwed in place, and it needs to continue to rotate the pump body 1 to adjust the sensing body 32 to the detection range of the detection element 22. This can effectively prevent the pump body 1 from being screwed into place and improve the safety of use.

Referring to FIG. 2 , which is a pump of the present application including the above-mentioned pump body clamping device. Wherein, the pump of the present application can be a plunger pump, etc., which also includes a pump body 1, a box body 4 and a push rod 5 arranged in the box body 4, and one end of the push rod 5 protrudes from one side of the box body 4 and is exposed On the outside of the box body 4, and the push rod 5 can perform a linear reciprocating motion in the box body 4, the clamping seat 2 is fixed on one side of the box body 4, and the end of the push rod 5 protruding from the box body 4 runs along the first channel 21. The first end is inserted into the second channel 31 .

Wherein, referring to FIG. 3 , the clamping seat 2 can be fixed with the box body 4 by means of bolt connection, which is convenient for disassembly and maintenance.

Further, referring to FIG. 2 , the pump body 1 includes a piston cylinder 11 and a piston 12 slidably arranged in the cylinder 11 of the piston 12 , one end of the piston cylinder 11 passes through the first passage 21 and is inserted into the second passage 31 , and the piston 12 is nested At one end of the push rod 5 protruding from the box 4 . The connection between the piston 12 and the push rod 5 is a detachable connection, which can be a threaded connection or a clamping connection, so as to realize that different pump bodies 1 are connected to the box body 4 through a clamping device. At the same time, the pump body 1 also includes a first pipeline 13 for fluid inflow and a second pipeline 14 for fluid outflow. When the push rod 5 pushes the piston 12 to perform a compressing motion in the piston cylinder 11, the inside of the piston cylinder 11 increases. The pressure is increased to pressurize the fluid, thereby realizing the working principle of the pump.

Further, with reference to FIG. 1 , as a driving method for realizing the linear reciprocating motion of the push rod 5 in the box body 4, the present application adopts an eccentric shaft to drive the push rod 5, specifically: the box body 4 is also provided with It includes a transmission shaft 6 and a turntable 7 sleeved on the transmission shaft 6 ; Since the transmission shaft 6 is eccentrically arranged relative to the turntable 7 , when the transmission shaft 67 rotates to drive the turntable 7 to rotate, the push rod 5 can be pushed to move back and forth in a straight line.

Further, referring to FIGS. 1-2 , the casing 4 is further provided with a sliding bearing 8 through which the push rod 5 passes. The sliding bearing 8 is fixed inside the box 4, and the push rod 5 passes through the inner ring of the sliding bearing 8 to support and guide the push rod 5, so that the push rod 5 can continuously and stably perform linear reciprocating motion.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples", etc., is meant to incorporate the embodiments A particular feature, structure, material, or characteristic described by an example or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the present application, The scope of the application is defined by the claims and their equivalents.

Claims

A pump body clamping device, characterized in that it comprises:

The clamping seat is used to be fixed on one side of the box body, the clamping seat is provided with a first channel running through both sides of the clamping seat, the first end of the first channel is used for the insertion of the push rod, the first channel is The second end of a channel is used for the pump body to be screwed in;

a pump body seat, which is arranged in the first channel and can rotate relative to the clamping seat, the pump body seat is provided with a second channel that runs through both sides of the pump body and is used for the insertion and clamping of the pump body;

Wherein, the clamping seat is provided with a detection element, and the pump body seat is provided with an induction body; when the pump body is inserted into the second channel and screwed in along the first channel, the pump body seat is Rotate in the first channel so that the induction body is located within the detection range of the detection element.
The pump body clamping device according to claim 1, wherein the detection element is a proximity sensor.
The pump body clamping device according to claim 2, wherein the induction body is a convex block provided on the outer side wall of the pump body seat, and the clamping seat is provided with a hole for the induction body to pass through. slot hole.
The pump body clamping device according to claim 2, wherein the detecting element has a sensing surface for detecting the sensing body, the sensing surface of the detecting element is circular, and the sensing element of the detecting element has a sensing surface. The outer diameter of the surface is 0.5-20 mm, and the minimum distance between the sensing surface of the detection element and the sensing body is 0-20 mm.
The pump body clamping device according to claim 1, wherein an inner thread structure is provided on the inner side wall of the second end of the first channel.
The pump body clamping device according to claim 5, wherein the internal thread structure is a trapezoidal thread or a round thread or a zigzag thread or a square thread.
A pump, comprising a pump body, a box body and a push rod disposed in the box body, one end of the push rod protrudes from one side of the box body and is exposed on the outside of the box body, and the push rod The rod can perform linear reciprocating motion in the box, and it is characterized in that it also includes the pump body clamping device according to any one of claims 1-6;

The clamping seat is fixed on one side of the box body, and one end of the push rod protruding from the box body is inserted into the second channel along the first end of the first channel.
The pump according to claim 7, wherein the pump body comprises a piston cylinder and a piston slidably arranged in the piston cylinder, and one end of the piston cylinder passes through the first passage and is inserted into the first passage. In the two channels, the piston is nested at one end of the push rod protruding from the box.
The pump according to claim 7, wherein the casing is further provided with a drive shaft and a turntable sleeved on the drive shaft; the drive shaft is eccentrically arranged with respect to the turntable, and the drive shaft One end face of the push rod located in the box abuts against the outer side wall of the turntable.
The pump according to claim 7, wherein the casing is further provided with a sliding bearing through which the push rod passes.