Pump axial force measuring assembly, bearing body and pump

Abstract

The present application relates to the technical field of pump, especially to a pump axial force measuring assembly, a bearing body and a pump. The pump axial force measuring assembly comprises a support body, the support body is used for being fixed in a center hole of the bearing body; a plurality of support blocks are fixed on the support body in a circumferential direction; a measuring body is fixed on a side of the support block away from the support body; a force receiving boss is fixed on a side of the measuring body away from the support block, the force receiving boss is used for abutting against a bearing installed in the center hole; the support block, the measuring body and the force receiving boss are all used for being arranged in a spaced manner with an inner wall of the center hole; and a strain measuring element is fixed on the measuring body and is used for measuring normal strain of the measuring body. The pump axial force measuring assembly provided by the present application can be integrated in the pump and is more suitable for real-time measurement in industrial production.

Description

Technical Field

[0001] This invention relates to the field of pump technology, and in particular to a pump axial force measuring component, a bearing housing, and a pump. Background Technology

[0002] Centrifugal pumps generate axial forces along the pump inlet direction during operation. These axial forces cause axial displacement of the pump rotor, increasing friction between the bearings and bearing housings, thus reducing pump life. While axial forces can be calculated using empirical formulas based on pump type and operating conditions during pump design, the accuracy of these formulas is limited and they cannot be used when axial force balancing devices are installed on the pump. Measurement of pump axial forces primarily involves detecting axial displacement or strain generated by the elastic components under load, and obtaining the magnitude of the axial force based on calibration data.

[0003] Traditional axial force measuring devices are generally located outside the pump and need to be connected to the rear bearing or housing of the pump via a transmission assembly. This results in a large axial dimension of the entire measuring device, increasing the difficulty of centering and dynamic balancing, and making it unsuitable for use when the pump is operating at high speed. Furthermore, it requires the installation of many discrete components and auxiliary measuring devices before measurement, making assembly complex. The large size and complex assembly of traditional axial force measuring devices make them unsuitable for real-time monitoring in industrial applications. Summary of the Invention

[0004] The purpose of this invention is to provide a pump axial force measuring component, bearing housing, and pump, to address, to some extent, the problems of existing axial force measuring devices, which are generally located outside the pump and require connection to the rear bearing housing or casing via a transmission assembly. This results in a large axial dimension of the entire measuring device, increasing the difficulty of centering and dynamic balancing, and making it unsuitable for use when the pump is operating at high speed. Furthermore, it requires the installation of numerous discrete components and auxiliary measuring devices before measurement, leading to complex assembly. Traditional axial force measuring devices are large in size and complex to assemble, making them unsuitable for real-time monitoring in industrial applications.

[0005] This invention provides a pump axial force measuring assembly, comprising: a support body for fixing within a central hole of a bearing body; a plurality of support blocks fixed at intervals along the circumferential direction on the support body; a measuring body fixed on the side of the support blocks away from the support body; a force-bearing boss fixed on the side of the measuring body away from the support blocks, the force-bearing boss being used to abut against a bearing installed in the central hole; the support blocks, the measuring body, and the force-bearing boss are all spaced apart from the inner wall of the central hole; and a strain measuring element fixed on the measuring body for measuring at least the normal strain of the measuring body.

[0006] A pump is formed by assembling a bearing body with the pump axial force measuring component provided by the present invention, a pump shaft, a bearing, and other components. The pump axial force measuring component is located in the center hole of the bearing body. After the pump is assembled, the pump axial force measuring component is placed inside the pump. The bearing abuts against the shoulder of the pump shaft, and the force-bearing boss abuts against the side of the bearing away from the shoulder. When the pump is running, it is subjected to axial force from the fluid, causing the pump shaft to displace in the same direction. The pump shaft drives the bearing to press against the force-bearing boss, which is fixed to the measuring body. Therefore, the measuring body is subjected to the pressure transmitted by the force-bearing boss. The support body is fixed on the inner wall of the central hole, and the support block supports the measuring body to prevent it from becoming unstable. The measuring body generates normal strain under the action of bending moment, especially at the position where the measuring body contacts the force-bearing boss, where the strain is relatively large. The strain measuring element can measure the strain at this point. Before the measuring body yields and deforms, the strain measured by the strain measuring element has an approximately linear relationship with the axial force on the pump axial force measuring component. Based on the statically determinate test data of the pump axial force measuring component, the axial force corresponding to the measured strain can be fitted, thereby realizing the measurement of the pump axial force (the fitting calculation process can be obtained using conventional methods).

[0007] In the pump axial force measuring component of this invention, multiple support blocks are spaced apart, forming a hollow structure between the support body and the measuring body. This design prevents instability of the measuring body while allowing it to deform easily under force, facilitating accurate measurement of the normal strain by the strain measuring element and thus enabling accurate determination of the pump's axial force. Furthermore, the support blocks, the measuring body, and the force-bearing boss are all spaced apart from the inner wall of the central hole, resulting in relatively large stress and deformation of the measuring body that increases linearly with load, facilitating measurement.

[0008] Compared to traditional axial force measuring devices located outside the pump, the pump axial force measuring component provided by this invention can be integrated inside the pump, avoiding the need for additional transmission components. The overall axial dimension of the pump axial force measuring component is small, occupying a small area, which reduces the difficulty of centering and dynamic balancing, and allows for real-time measurement of the pump's axial force. This invention also avoids the need to install numerous discrete components and auxiliary measuring devices before measurement, resulting in a simple structure, easy assembly, and greater suitability for real-time measurement in industrial production. The strain gauge, which measures the normal strain generated by bending, exhibits less axial deformation than elastic elements, thus avoiding increased friction and collision.

[0009] Furthermore, the support body is arranged in a ring shape and is coaxial with the central hole; the measuring body is arranged in a ring shape and is coaxial with the support body.

[0010] Furthermore, the strain measuring element is located on the surface of the measuring body facing the support body and is directly opposite the force-bearing boss.

[0011] Furthermore, the plurality of support blocks are evenly spaced along the circumferential direction of the support body; the number of force-bearing protrusions is plurality, and the plurality of force-bearing protrusions are evenly spaced along the circumferential direction of the measuring body; the support blocks and the force-bearing protrusions are staggered; the number of strain measuring elements is plurality, and the plurality of strain measuring elements are evenly spaced along the circumferential direction of the support body.

[0012] The present invention also provides a bearing body, including a main body and the above-mentioned pump axial force measuring component. The main body is provided with a central hole, the support body is fixed on the inner wall of the central hole, and the support block, the measuring body and the force-bearing boss are all spaced apart from the central hole.

[0013] Furthermore, the pump axial force measuring component is integrally formed with the main body.

[0014] Furthermore, the measuring body is provided with a wire-passing hole, and the side wall of the main body is provided with a lead wire hole, the wire-passing hole and the lead wire hole are connected; the lead wire of the strain measuring element passes through the wire-passing hole and the lead wire hole.

[0015] Furthermore, the main body is provided with sealing grooves on both sides of the lead hole, and a sealing ring is provided in the sealing groove.

[0016] The present invention also provides a pump, including a pump shaft, a bearing and the aforementioned bearing body, wherein the pump shaft passes through the pump axial force measuring assembly, the bearing is disposed between the inner wall of the central hole and the pump shaft, and the force-bearing boss abuts against the bearing.

[0017] Furthermore, the pump also includes a volute, the front end of which is fitted over the rear end of the main body. The rear end of the main body is provided with a lead wire hole, and the front end of the volute is provided with a mounting hole. A lead wire tube is fixed in the mounting hole, and the lead wire tube communicates with the lead wire hole. The lead wire tube is filled with sealant.

[0018] It should be understood that both the foregoing general description and the following detailed description are for illustrative purposes and do not necessarily limit the scope of this disclosure. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of this disclosure. Furthermore, the specification and drawings serve to explain the principles of this disclosure. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the bearing body according to an embodiment of the present invention; Figure 2 for Figure 1 The cross-sectional view of the bearing body at point AA is shown below; Figure 3 This is a cross-sectional view of the pump in an embodiment of the present invention.

[0021] Icons: 1-Bearing body; 11-Main body; 12-Pump axial force measuring assembly; 121-Support body; 122-Support block; 123-Measuring body; 124-Force-bearing boss; 125-Strain measuring element; 126-Lead wire; 127-Lead wire hole; 13-Wire hole; 14-Sealing groove; 15-Sealing ring; 2-Pump shaft; 3-Bearing; 4-Volume; 5-Lead wire tube; 6-Sealant; 7-Impeller; 8-Front chamber sealing sleeve; 9-Rear chamber sealing sleeve; 41-Mounting hole. Detailed Implementation

[0022] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0023] The components of the embodiments of the invention described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0024] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] like Figures 1 to 3 As shown, the present invention provides a pump axial force measuring assembly 12, comprising: a support body 121, which is fixed in the central hole of a bearing body 1; a support block 122, wherein a plurality of support blocks 122 are fixed on the support body 121 at intervals along the circumferential direction; a measuring body 123, which is fixed on the side of the support block 122 away from the support body 121; a force-bearing boss 124, which is fixed on the side of the measuring body 123 away from the support block 122, and the force-bearing boss 124 is used to abut against the bearing 3 installed in the central hole. The support block 122, the measuring body 123 and the force-bearing boss 124 are all spaced apart from the inner wall of the central hole, that is, the support block 122, the measuring body 123 and the force-bearing boss 124 do not contact the inner wall of the central hole; and a strain measuring element 125 (e.g., a strain gauge, preferably a fiber optic strain gauge) is fixed on the measuring body 123 for measuring at least the normal strain of the measuring body 123.

[0029] The bearing body 1, which is connected to the pump axial force measuring component 12 provided in this embodiment, is assembled with the pump shaft 2, bearing 3 and other components to form a pump. The pump axial force measuring component 12 is located in the center hole of the bearing body 1. After the pump is assembled, the pump axial force measuring component 12 is placed inside the pump. The bearing 3 abuts against the shoulder of the pump shaft 2, and the force-bearing boss 124 abuts against the side of the bearing 3 away from the shoulder. When the pump is running, it is subjected to axial force from the fluid, causing the pump shaft 2 to displace in the same direction. The pump shaft 2 drives the bearing 3 to press against the force-bearing boss 124. The force-bearing boss 124 is fixed on the measuring body 123. Therefore, the measuring body 123 is subjected to the pressure transmitted by the force-bearing boss 124. The support body 121 is fixed on the inner wall of the central hole, and the support block 122 supports the measuring body 123 to prevent it from becoming unstable. The measuring body 123 generates normal strain (i.e., axial strain) under the action of bending moment. In particular, the strain is larger at the contact position between the measuring body 123 and the force-bearing boss 124. The strain measuring element can measure the normal strain at this point. Before the measuring body 123 yields, the strain measured by the strain measuring element 125 is approximately linearly related to the axial force on the pump axial force measuring assembly 12. Based on the statically determinate test data of the pump axial force measuring assembly 12, the axial force corresponding to the measured strain can be fitted, thereby realizing the measurement of the pump axial force (the fitting calculation process can be obtained using conventional methods).

[0030] In this embodiment, the pump axial force measuring component 12 has multiple support blocks 122 spaced apart, forming a hollow structure between the support body 121 and the measuring body 123. This design prevents the measuring body 123 from becoming unstable and allows it to deform easily under force, facilitating accurate measurement of the normal strain of the measuring body 123 by the strain measuring element 125, thus enabling accurate determination of the pump's axial force. Furthermore, the support blocks 122, the measuring body 123, and the force-bearing boss 124 are all spaced apart from the inner wall of the central hole, resulting in relatively large stress and deformation of the measuring body that increases linearly with the load, facilitating measurement.

[0031] Compared to traditional axial force measuring devices located outside the pump, the pump axial force measuring component 12 provided in this embodiment can be integrated inside the pump, avoiding the need for additional transmission components. The overall axial dimension of the pump axial force measuring component 12 is small, occupying a small area, which reduces the difficulty of centering and dynamic balancing, allowing for real-time measurement of the pump's axial force. The pump axial force measuring component 12 provided in this embodiment also avoids the need to install numerous discrete components and auxiliary measuring devices before measurement, resulting in a simple structure, easy assembly, and greater suitability for real-time measurement in industrial production. The normal strain generated by bending of the measuring body 123, compared to using an elastic element, utilizes tensile strain in the strain measuring element 125, resulting in smaller axial deformation of the strain measuring element 125, thereby avoiding increased friction and collision.

[0032] It is understandable that the sequential arrangement of the support body 121, support block 122, measuring body 123 and force-bearing boss 124 along the axial direction of the bearing body 1 is beneficial to the transmission of axial force and to improving the accuracy of measurement.

[0033] The strain measuring element 125 can be attached to the measuring body 123 and further reinforced with sealant.

[0034] The measuring body 123 and the support body 121 can be arranged in an arc-shaped segment.

[0035] As an alternative, such as Figure 1 and Figure 2 As shown, the support body 121 is arranged in a ring shape and is coaxial with the central hole. It can be understood that the side wall of the support body 121 is fixed to the inner wall of the central hole; the measuring body 123 is arranged in a ring shape and is coaxial with the support body 121.

[0036] In this embodiment, the support 121 is a closed ring structure and the measuring body 123 is a closed ring structure. The forces on both are more uniform, which is more conducive to reducing the difficulty of centering and dynamic balancing.

[0037] The measurement direction of the strain measuring element 125 is tangent to the center line of the toroidal surface of the measuring body 123.

[0038] As an alternative, such as Figure 2 As shown, the strain measuring element 125 is located on the surface of the measuring body 123 facing the support body 121 and is directly opposite the measuring body 123.

[0039] In this embodiment, the principal stress is greatest at the center of the contact position between the force measuring body and the force-bearing boss 124. A strain measuring element 125 is set on the wall of the measuring body 123 facing the support body 121 corresponding to this position. On the one hand, the axial force of the pump can be calculated by measuring the strain of the measuring body 123. On the other hand, the maximum principal stress can be calculated by the strain to determine whether the measuring body 123 has yielded. This ensures that the normal strain is measured before the measuring body 123 yields, thus ensuring that the strain and axial force are approximately proportional during measurement.

[0040] The bearing body 1 can be made of Q235 low alloy high strength steel, and the thickness of the force measuring body is 1.5mm-2.5mm (e.g., 1.5mm, 1.6mm, 1.7mm, 1.9mm, 2.0mm, 2.2mm, 2.3mm or 2.5mm, etc.). The axial force measurement value of the force measuring body within the yield range is within 1000N.

[0041] As an alternative, such as Figure 1 and Figure 2As shown, multiple support blocks 122 are evenly spaced along the circumferential direction of the support body 121; multiple force-bearing protrusions 124 are evenly spaced along the circumferential direction of the measuring body 123; the support blocks 122 and the force-bearing protrusions 124 are staggered; multiple strain measuring elements are present, and multiple strain measuring elements have force-bearing protrusions.

[0042] In this embodiment, the support blocks 122 and the force-bearing protrusions 124 are staggered, that is, one support block 122 is located between two support blocks 122, and one force-bearing protrusion 124 is located between two support blocks 122. This avoids the support of the support blocks 122 affecting the deformation of the contact position between the measuring body 123 and the force-bearing protrusion 124, thus improving the accuracy of the measurement results. Multiple strain measuring elements are arranged on the inner wall of the measuring body 123, thereby enabling more comprehensive strain measurement of the measuring body 123 and making the detection results more accurate. The multiple strain measuring elements are preferably symmetrically arranged, and the measurement result can be taken as the average value of multiple strain measuring elements. It can be understood that each of the multiple strain measuring elements corresponds to one force-bearing protrusion.

[0043] The number of force-bearing bosses 124 can be two, three, four, five, or six, etc.

[0044] The number of support blocks 122 can be two, three, or four, etc.

[0045] It is understandable that the number of strain measuring elements 125 can be the same as the number of force-bearing bosses 124, that is, multiple strain measuring elements 125 are set one-to-one with multiple force-bearing bosses.

[0046] like Figure 1 and Figure 2 As shown, an embodiment of the present invention also provides a bearing body 1, including a main body 11 and a pump axial force measuring component 12 of any of the above-described technical solutions. The main body 11 has a central hole, and a support body 121 is fixed on the inner wall of the central hole. The support block 122, the measuring body 123, and the force-bearing boss 124 are all spaced apart from the central hole. This bearing body 1 has all the beneficial technical effects of the pump axial force measuring component 12, which will not be described in detail here.

[0047] The support 121 can be fixed to the main body 11 by welding, fasteners (e.g., bolts or pins), or snap-fit.

[0048] As an alternative, the pump axial force measuring component 12 is integrally formed with the main body 11, that is, the pump axial force measuring component 12 is directly machined on the main body 11. After forming, the pump axial force measuring component 12 is centered, eliminating the need for centering during assembly, thus ensuring the accuracy of the pump axial force measuring component 12 installation and improving the accuracy of measurement.

[0049] The strain measurement element 125 can be connected to an external terminal via wireless communication.

[0050] Alternatively, the strain measuring element 125 can be connected to an external terminal for communication via lead 126, such as... Figure 2 As shown, based on the above embodiment, the measuring body 123 is further provided with a wire hole 13, and the side wall of the main body 11 is provided with a lead wire hole 127. The wire hole 13 and the lead wire hole 127 are connected; the lead wire 126 of the strain measuring element 125 passes through the wire hole 13 and the lead wire hole 127.

[0051] In this embodiment, the leads 126 of multiple strain measuring elements 125 can first pass through the wire hole 13, converge in the annular cavity of the main body 11, then pass through the wire hole 127, and then extend out of the pump, so that data can be transmitted to the outside.

[0052] like Figure 2 As shown, based on the above embodiment, a sealing groove 14 is further provided on both sides of the lead hole 127 on the main body 11, and a sealing ring 15 is provided in the sealing groove 14. That is, a sealing groove 14 is provided on both sides of the lead hole 127 in the axial direction of the main body 11.

[0053] In this embodiment, sealing grooves 14 are provided on both sides of the lead hole 127, and sealing rings 15 are fixed in the sealing grooves 14, thereby improving the pump's sealing performance and preventing the medium from flowing out of the lead hole 127.

[0054] like Figure 3 As shown, the present invention also provides a pump, including a pump shaft 2, a bearing 3 and a bearing body 1 of any of the above technical solutions. The pump shaft 2 passes through a central hole, and the bearing 3 is disposed between the inner wall of the central hole and the pump shaft 2. The force-bearing boss 124 abuts against the bearing 3.

[0055] The pump provided in this embodiment has a built-in pump axial force measuring component 12, which can realize the real-time detection of the pump's own axial force. Moreover, the built-in pump axial force measuring component 12 has a simple and compact structure, which makes the pump's structure simple and compact.

[0056] like Figure 3 As shown, based on the above embodiment, the pump further includes a volute 4. The front end of the volute 4 (i.e., the end near the bearing body) is sleeved on the rear end of the main body 11 (i.e., the end near the volute). It can also be understood that the volute and the bearing body have an overlapping part. The rear end of the main body 11 is provided with a lead wire hole 127, and the front end of the volute 4 is provided with a mounting hole 41. A lead wire tube 5 is fixed in the mounting hole 41. The lead wire tube 5 is connected to the lead wire hole 127, and the lead wire tube 5 is filled with sealant 6.

[0057] In this embodiment, the lead wire 126 of the strain measuring element 125 passes through the wire hole 13 and the lead wire hole 127, and then extends out of the pump through the lead tube 5. Sealant 6 is filled inside the lead tube 5 to ensure its airtightness.

[0058] The lead tube 5 can be interference-fitted into the mounting hole 41. Alternatively, the lead tube 5 can be fixed to the mounting hole 41 by a threaded connection for easy installation and removal.

[0059] The mounting hole 41 can be a stepped hole, with the smaller section of the stepped hole communicating with the lead wire hole 127, and the larger section of the stepped hole being threaded. The axial position of the bearing body 1 can be adjusted using shims to ensure the coaxiality of the lead wire hole 127 and the stepped hole, thereby facilitating wire routing.

[0060] The lead tube 5 can be made of metal.

[0061] It is understood that the pump also includes an impeller 7, a front chamber sealing sleeve 8, and a rear chamber sealing sleeve 9. The impeller 7 is disposed inside the volute 4 and sleeved on the end of the pump shaft 2. The front end of the volute 4 forms the front chamber, and the rear end of the bearing body 1 forms the rear chamber. The front chamber sealing sleeve is disposed in the front chamber, and the rear chamber sealing sleeve 9 is disposed in the rear chamber. The rear chamber sealing sleeve 9 is located on the side of the support body 121 away from the bearing 3. A notch can be provided on the side of the rear chamber sealing sleeve 9 near the support body 121 to facilitate the passage of the lead wire 126.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention. Numerous specific details are set forth in the specification provided herein. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification. Furthermore, those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are meant to be within the scope of the present invention and form different embodiments.

Claims

1. A pump axial force measuring assembly, characterized in that, include: A support body for fixing within the central hole of the bearing body; Support blocks, a plurality of such support blocks are fixed to the support body at uniform intervals along the circumferential direction; A measuring body, the measuring body being fixed to the side of the support block away from the support block; The support body is arranged in a ring shape and is coaxial with the central hole; the measuring body is arranged in a ring shape and is coaxial with the support body. A force-bearing boss is fixed to the side of the measuring body away from the support block, and the force-bearing boss is used to abut against the bearing installed in the central hole; the support block, the measuring body, and the force-bearing boss are all spaced apart from the inner wall of the central hole; there are multiple force-bearing bosses, which are evenly spaced along the circumference of the measuring body; the support block and the force-bearing bosses are staggered. A strain measuring element is fixed on the measuring body and is used to measure at least the normal strain of the measuring body; the strain measuring element is located on the surface of the measuring body facing the support body and is directly opposite the force-bearing boss; there are multiple strain measuring elements, and the multiple strain measuring elements are evenly spaced along the circumferential direction of the support body.

2. A bearing body, characterized in that, The device includes a main body and a pump axial force measuring assembly as described in claim 1. The main body has a central hole, the support body is fixed on the inner wall of the central hole, and the support block, the measuring body, and the force-bearing boss are all spaced apart from the central hole.

3. The bearing body according to claim 2, characterized in that, The pump axial force measuring component is integrally formed with the main body.

4. The bearing body according to claim 2, characterized in that, The measuring body is provided with a wire-passing hole, and the side wall of the main body is provided with a lead wire hole, and the wire-passing hole is connected to the lead wire hole; The lead wire of the strain measuring element passes through the wire hole and the lead wire hole.

5. The bearing body according to claim 4, characterized in that, The main body is provided with sealing grooves on both sides of the lead hole, and a sealing ring is provided in the sealing groove.

6. A pump, characterized in that, The device includes a pump shaft, a bearing, and a bearing body as described in any one of claims 2-5, wherein the pump shaft passes through the pump axial force measuring assembly, the bearing is disposed between the inner wall of the central hole and the pump shaft, and the force-bearing boss abuts against the bearing.

7. The pump according to claim 6, characterized in that, The pump also includes a volute, the front end of which is fitted over the rear end of the main body. The rear end of the main body is provided with a lead wire hole, and the front end of the volute is provided with a mounting hole. A lead wire tube is fixed in the mounting hole and communicates with the lead wire hole. The lead wire tube is filled with sealant.

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