Water pump adapter testing device

Abstract

The invention provides a water pump adapter testing device, which belongs to the technical field of fire fighting detection, and comprises a machine body with a water inlet pipeline, and the caliber of the water outlet end of the water inlet pipeline is gradually increased outwards; the water pump adapter testing device further comprises a sealing piece, the sealing piece is provided with an outer sleeve and an inner sleeve fixedly arranged in the outer sleeve, the outer wall of the outer sleeve and the inner wall of the water outlet end of the water inlet pipeline are attached and detachably connected, and the inner sleeve is provided with a plurality of splicing pipes which are sleeved together. Every two adjacent splicing pipes are detachably connected, one end of each splicing pipe is provided with an inclined face attached to the inner wall of the water inlet pipeline, the outer wall of the splicing pipe located on the outermost side is attached to the inner wall of the outer sleeve, and the inner wall of the splicing pipe located on the innermost side is attached to the outer wall of the water pump adapter connector and detachably connected with the outer wall of the water pump adapter connector. The applicability of the testing device is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of fire detection, and in particular relates to a water pump coupler testing device. Background Art

[0002] The water pump coupler is a fire protection facility for high-rise buildings in accordance with the "High-rise Building Fire Protection Code". It is usually connected to the water supply system of fire protection equipment such as the automatic sprinkler system or fire hydrant in the building.

[0003] When a fire occurs, the water pump of the fire truck can quickly connect to the fire fighting equipment in the building through the interface of the water pump connector and deliver water for pressurization, so that the fire fighting equipment in the room can get sufficient pressure water source to extinguish the fire on different floors. In order to ensure that the fire fighting facilities are in good condition, it is necessary to test the fire fighting facilities regularly, mainly testing the water column flow and pressure value of the water pump connector.

[0004] The test device has a water inlet pipe connected to the water pump coupler interface. The water pump coupler interface has different calibers, but the caliber of the currently available water inlet pipe is a fixed size. Therefore, one test device cannot be adapted to water pump couplers of various calibers. Therefore, there is a defect of low applicability of the test device. Summary of the invention

[0005] An embodiment of the present invention provides a water pump coupling testing device, aiming to solve the technical problem of low applicability of the testing device.

[0006] To achieve the above object, the technical solution adopted by the present invention is: to provide a water pump adapter testing device, comprising a body having a water inlet pipe, wherein the diameter of the water outlet end of the water inlet pipe gradually increases outward; The water pump connector testing device also includes a sealing member, which includes an outer sleeve and an inner sleeve fixed in the outer sleeve. The water pump connector testing device also includes a sealing member, which includes an outer sleeve and an inner sleeve fixed in the outer sleeve. The outer wall of the outer sleeve fits with the inner wall of the water outlet end of the water inlet pipe and the two are detachably connected. The inner sleeve has a plurality of splicing tubes that are sleeved together, and two adjacent splicing tubes are detachably connected. One end of the splicing tube has an inclined surface that fits with the inner wall of the water inlet pipe. The outer wall of the splicing tube located on the outermost side fits with the inner wall of the outer sleeve, and the inner wall of the splicing tube located on the innermost side fits with the outer wall of the water pump connector interface, and the two are detachably connected and fixed.

[0007] In a possible implementation, a fastening system is further included, wherein the fastening system includes a retaining ring, which is detachably connected and fixed to the end of the water outlet of the water inlet pipe, and the retaining ring is used to abut against the end face of the outer sleeve.

[0008] In one possible implementation, a ring groove is provided on the side wall of the retaining ring facing the outer sleeve, a driving cavity connected to the ring groove is provided in the retaining ring, and the fastening system also includes a limit ring slidably adapted in the ring groove and a driving mechanism provided in the driving cavity, and the driving mechanism is used to drive the limit ring to axially squeeze the outer sleeve.

[0009] In a possible implementation, an auxiliary ring fixedly connected to the limiting ring is provided in the inner ring of the retaining ring, the inner diameter of the auxiliary ring is greater than or equal to the maximum inner diameter of the outer sleeve, the auxiliary ring is radially penetrated by an auxiliary rod, the auxiliary rod is threadedly connected to the auxiliary ring, and one end of the auxiliary rod located in the inner ring of the auxiliary ring is fixed with an auxiliary block for extruding the inner sleeve.

[0010] In a possible implementation, the driving mechanism includes a plurality of limit rods arranged in the driving cavity, limit sleeves corresponding to the limit rods one by one, driven gears corresponding to the limit sleeves one by one, and a driving gear meshed with the plurality of driven gears, one end of the limit rod extends into the annular groove and is fixedly connected to the limit ring, the limit sleeve is threadedly connected to the limit rod, the limit sleeve is rotatably connected to the retaining ring around its own center axis, the driven gear is fixed to the outer periphery of the limit sleeve, a driving hand wheel is provided on the side of the retaining ring away from the outer sleeve, one side of the driving hand wheel extends into the driving cavity and is fixedly connected to the driving gear, the driving hand wheel is coaxial with the driving gear, and the driving hand wheel is rotatably connected to the retaining ring around its own center axis.

[0011] In a possible implementation, the retaining ring is provided with a through groove for the limiting rod to extend from the driving cavity into the annular groove, a guide block is fixedly provided on the inner wall of the through groove, and a guide groove is provided on the outer wall of the limiting rod for slidingly fitting with the guide block, and the guide groove extends along the axial direction of the limiting rod.

[0012] In a possible implementation, the inner wall of the splicing tube is provided with a positioning groove, and the outer wall of the splicing tube is provided with a positioning portion that is plugged and matched with the positioning groove; Wherein, after the positioning groove is aligned with the positioning portion, the positioning portion is inserted into the positioning groove.

[0013] In a possible implementation, the outer wall of the splicing tube is provided with a receiving cavity, and a positioning block forming the positioning portion is slidably adapted in the receiving cavity; An elastic member is provided in the storage cavity, the elastic member is fixed between the positioning block and the inner wall of the storage cavity, and the elastic member has a pre-tightening force that enables the positioning block to be inserted into the positioning groove; or A power piece is arranged in the receiving cavity, and when the positioning groove is aligned with the positioning portion, the power piece is activated to push the positioning block into the positioning groove.

[0014] In one possible implementation, the inner wall of the innermost splicing tube is connected to a locking tube by rotating around its own central axis, one end of the locking tube is aligned with the innermost end of the innermost splicing tube, and the other end of the locking tube extends to the outside of the outermost end of the innermost splicing tube, and a locking assembly is provided between the innermost splicing tube and the locking tube.

[0015] In one possible implementation, the locking assembly is arranged in plurality around the central axis of the locking tube, and the locking assembly includes a locking plate and two locking bolts, one of the locking bolts is connected between the locking plate and the locking tube, and the other locking bolt is connected between the locking plate and the innermost splicing tube.

[0016] Compared with the prior art, the water pump coupling test device provided by the present invention has the following advantages: First, insert the seal into the water inlet pipe, and then fix the seal to the inner wall of the water inlet pipe, and then insert the interface of the water pump coupler into the seal and fix the interface of the water pump coupler to the seal, so as to connect the water inlet pipe and the interface of the water pump coupler; gradually enlarge the water outlet end of the water inlet pipe outward, and the seal can be adapted to different water pump coupler interface diameters by assembling different numbers and thicknesses of splicing tubes, so that the test device can be connected to water pump coupler diameters of various specifications, thereby improving the applicability of the test device; the outer sleeve and the inner sleeve are made of different materials, the outer sleeve is made of a harder and more wear-resistant material, and the inner sleeve is made of a softer material with better sealing performance.

[0017] The limiting ring is driven by the driving mechanism to extrude the outer sleeve. During the process of the limiting ring extruding the outer sleeve, the limiting ring causes the auxiliary block to extrude the inner sleeve through the auxiliary rod, thereby allowing the seal to continue to move into the water inlet pipe, thereby enhancing the sealing effect of the seal.

[0018] The relative positions of two adjacent splicing pipes are positioned by providing positioning blocks and positioning grooves, so that the inclined surfaces of the splicing pipes are in the same plane, thereby making the inner sleeve completely fit with the inner wall of the water inlet pipe, thereby improving the sealing effect of the seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A partial schematic diagram showing the connection between a water inlet pipe and a water pump connector provided in an embodiment of the present invention; Figure 2 A partial cross-sectional view showing the sealing method of the water inlet pipe and the water pump connector provided in an embodiment of the present invention; Figure 3A partial cross-sectional view of an embodiment of the present invention to illustrate a method for fixing a sealing member; Figure 4 for Figure 3 A partial enlarged schematic diagram of part A; Figure 5 A partial cross-sectional view showing a method of inserting a positioning block into a positioning groove provided in an embodiment of the present invention; Figure 6 A partial cross-sectional view is provided for another embodiment of the present invention to illustrate another method of inserting a positioning block into a positioning groove.

[0020] Description of reference numerals: 10. Water inlet pipe; 20. Outer sleeve; 30, inner sleeve; 301, splicing tube; 3011, inclined surface; 3012, positioning groove; 3013, storage cavity; 3014, positioning block; 3015, power piece; 3016, elastic piece; 40. Fastening system; 401. Retaining ring; 4011. Ring groove; 4012. Driving cavity; 4013. Through groove; 4014. Guide block; 4015. Avoidance groove; 4016. Limiting groove; 402. Limiting ring; 403. Limiting rod; 4031. Guide groove; 404. Limiting sleeve; 405. Driven gear; 406. Driving gear; 4061. Driving hand wheel; 50, auxiliary ring; 501, auxiliary rod; 5011, auxiliary block; 502, adjustment rod; 60. Locking tube; 70, locking assembly; 701, locking plate; 702, locking bolt; 80. Water pump coupler. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] Please also read Figures 1 to 6, the water pump adapter test device of the present invention is described. A water pump adapter test device includes a body with a water inlet pipe 10 and a sealing member, the diameter of the water outlet end of the water inlet pipe 10 gradually increases outward, the sealing member has an outer sleeve 20 and an inner sleeve 30 fixed in the outer sleeve 20, the outer wall of the outer sleeve 20 fits with the inner wall of the water outlet end of the water inlet pipe 10 and the two are detachably connected, the inner sleeve 30 has a plurality of splicing pipes 301 sleeved together, two adjacent splicing pipes 301 are detachably connected, one end of the splicing pipe 301 has an inclined surface 3011 that fits with the inner wall of the water inlet pipe 10, the outer wall of the splicing pipe 301 located on the outermost side fits with the inner wall of the outer sleeve 20, the inner wall of the splicing pipe 301 located on the innermost side fits with the outer wall of the interface of the water pump adapter 80, and the two are detachably connected and fixed.

[0023] It should be noted that the machine body is not shown in the figure, and the machine body is an existing device used to detect the water column flow and pressure value of the water pump connector 80.

[0024] Compared with the prior art, the water pump coupling test device provided in this embodiment has the following advantages: First, insert the seal into the water inlet pipe 10, and then fix the seal to the inner wall of the water inlet pipe 10, and then insert the interface of the water pump coupler 80 into the seal, and fix the interface of the water pump coupler 80 to the seal, so as to connect the water inlet pipe 10 with the interface of the water pump coupler 80; gradually enlarge the water outlet end of the water inlet pipe 10 outward, and the seal can be adapted to different water pump coupler 80 interface calibers by assembling different numbers and thicknesses of splicing tubes 301, so that the test device can be connected to water pump couplers 80 calibers of various specifications, thereby improving the applicability of the test device; the outer sleeve and the inner sleeve are made of different materials, the outer sleeve is made of a harder and more wear-resistant material, and the inner sleeve is made of a softer material with better sealing performance.

[0025] In some embodiments, see Figure 3 and Figure 4 The water pump coupling test device also includes a fastening system 40 , which includes a retaining ring 401 . The retaining ring 401 is detachably connected and fixed to the water outlet end of the water inlet pipe 10 , and the retaining ring 401 is used to resist the end face of the outer sleeve 20 .

[0026] Insert the seal into the water inlet pipe 10, then tighten the outer sleeve 20 with the retaining ring 401, and finally fix the retaining ring 401 to the water inlet pipe 10 with bolts, so that there is no relative rotation between the outer sleeve 20 and the water inlet pipe 10, thereby fixing the outer sleeve 20 and the water inlet pipe 10.

[0027] The retaining ring 401 is fixed to the water inlet pipe 10 by bolts, which is quick, convenient, and time-saving, thereby improving the installation efficiency of the test device and making the retaining ring 401 reusable.

[0028] In some embodiments, see 3 and Figure 4 A ring groove 4011 is provided on the side wall of the retaining ring 401 facing the outer sleeve 20 , and a driving cavity 4012 connected to the ring groove 4011 is provided in the retaining ring 401 .

[0029] The fastening system 40 further includes a limiting ring 402 slidably adapted in the annular groove 4011 and a driving mechanism disposed in the driving cavity 4012 , wherein the driving mechanism is used to drive the limiting ring 402 to axially press the outer sleeve 20 .

[0030] Specifically, a side wall of the outer sleeve 20 facing the water pump connector 80 is provided with a limiting groove 4016 which is plugged and matched with the limiting ring 402 .

[0031] The limiting ring 402 is driven by the driving mechanism to be inserted into the limiting groove 4016 and squeeze the outer sleeve 20 into the water inlet pipe 10, so that the seal continues to move into the water inlet pipe 10, reducing the gap between the seal and the water inlet pipe 10, thereby enhancing the sealing effect of the seal.

[0032] In some embodiments, see Figure 3 and Figure 4 An auxiliary ring 50 fixedly connected to the limiting ring 402 is provided in the inner circle of the retaining ring 401, and the inner diameter of the auxiliary ring 50 is greater than or equal to the maximum inner diameter of the outer sleeve 20. The auxiliary ring 50 is radially penetrated by an auxiliary rod 501, and the auxiliary rod 501 is threadedly connected to the auxiliary ring 50. An auxiliary block 5011 for squeezing the inner sleeve 30 is fixed at one end of the auxiliary rod 501 located in the inner circle of the auxiliary ring 50.

[0033] Specifically, a side wall of the retaining ring 401 facing the outer sleeve 20 is provided with an avoidance groove 4015 for connecting the outside with the annular groove 4011 , and the auxiliary rod 501 is arranged in the avoidance groove 4015 .

[0034] It should be noted that Figure 3 and Figure 4 The structure in FIG. 5 is that the inner diameter of the auxiliary ring 50 is equal to the maximum inner diameter of the outer sleeve 20 .

[0035] During the process of the limiting ring 402 squeezing the outer sleeve 20, the limiting ring 402 drives the auxiliary rod 501 to move toward the direction close to the inner sleeve 30, so that the auxiliary rod 501 causes the auxiliary block 5011 to squeeze the inner sleeve 30, thereby enhancing the stability of the seal movement process; at the same time, the inner sleeve 30 will drive the seal to move into the water inlet pipe 10 when it is squeezed, thereby making the outer sleeve 20 and the inner sleeve 30 both press against the inner wall of the water inlet pipe 10, thereby improving the sealing effect of the seal on the water inlet pipe 10.

[0036] The inner diameter of the auxiliary ring 50 is not less than the inner diameter of the outer sleeve 20 , so that the auxiliary ring 50 will not hinder the interface of the water pump adapter 80 from being inserted into the water inlet pipe 10 .

[0037] In some embodiments, see Figure 3 An adjusting rod 502 is connected to the inner thread of the auxiliary ring 50 , one end of the adjusting rod 502 extends into the inner circle of the auxiliary ring 50 and is fixed to the auxiliary block 5011 , and the other end of the adjusting rod 502 extends to the outside of the auxiliary ring 50 .

[0038] Specifically, the auxiliary rod 501 is a telescopic rod with a telescopic length.

[0039] According to the assembled thickness of the inner sleeve 30 , the position of the auxiliary block 5011 can be moved by rotating the adjustment rod 502 , so that the auxiliary block 5011 moves to the middle position of the inner sleeve 30 or the bottom of the inner sleeve 30 .

[0040] In some embodiments, see Figure 3 and Figure 4 The driving mechanism includes a plurality of limit rods 403 arranged in the driving cavity 4012, limit sleeves 404 corresponding to the limit rods 403 one by one, driven gears 405 corresponding to the limit sleeves 404 one by one, and a driving gear 406 meshing with the plurality of driven gears 405. One end of the limit rod 403 extends into the annular groove 4011 and is fixedly connected to the limit ring 402. The limit sleeve 404 is threadedly connected to the limit rod 403. The limit sleeve 404 is rotatably connected to the retaining ring 401 around its own central axis. The driven gear 405 is fixedly arranged on the outer periphery of the limit sleeve 404.

[0041] A driving handwheel 4061 is provided on the side of the retaining ring 401 away from the outer sleeve 20. One side of the driving handwheel 4061 extends into the driving cavity 4012 and is fixedly connected to the driving gear 406. The driving handwheel 4061 is coaxial with the driving gear 406 and is rotatably connected to the retaining ring 401 around its own central axis.

[0042] After fixing the retaining ring 401 at the water outlet end of the water inlet pipe 10, the staff starts to rotate the driving hand wheel 4061, and the driving hand wheel 4061 drives the driving gear 406 to rotate, and the driving gear 406 drives all the driven gears 405 to rotate, thereby making all the limit sleeves 404 rotate synchronously. Since the limit rod 403 and the limit sleeve 404 are threadedly connected, the limit rod 403 will drive the limit plate to extend out of the annular groove 4011, so that the limit plate is pressed against the outer sleeve 20.

[0043] After the test of the water pump coupler 80 is completed, the staff drives the driving gear 406 to rotate in the opposite direction by reversely rotating the driving hand wheel 4061, so that the driving gear 406 causes all the limit sleeves 404 to rotate in the opposite direction synchronously through all the driven gears 405, thereby allowing the limit rod 403 to drive the limit plate to retract the annular groove 4011. In some embodiments, see Figure 4The retaining ring 401 is provided with a through groove 4013 for the limiting rod 403 to extend from the driving cavity 4012 into the annular groove 4011, and a guide block 4014 is fixedly provided on the inner wall of the through groove 4013. The outer wall of the limiting rod 403 is provided with a guide groove 4031 slidably adapted to the guide block 4014, and the guide groove 4031 extends along the axial direction of the limiting rod 403.

[0044] During the movement of the limiting rod 403 , the guide block 4014 slides in the guide groove 4031 , and the guide block 4014 enables the limiting rod 403 to slide only along its own length direction, so that the guide block 4014 plays a role of guiding and limiting the limiting rod 403 .

[0045] In some embodiments, see Figure 5 The inner wall of the splicing tube 301 is provided with a positioning groove 3012 , and the outer wall of the splicing tube 301 is provided with a positioning portion that is plugged and matched with the positioning groove 3012 .

[0046] When the positioning groove 3012 is aligned with the positioning portion, the positioning portion is inserted into the positioning groove 3012 .

[0047] In some embodiments, see Figure 5 The outer wall of the splicing tube 301 is provided with a storage cavity 3013, and a positioning block 3014 is slidably adapted to form a positioning portion in the storage cavity 3013. An elastic member 3016 is provided in the storage cavity 3013, and the elastic member 3016 is fixed between the positioning block 3014 and the inner wall of the storage cavity 3013. The elastic member 3016 has a pre-tightening force that enables the positioning block 3014 to be inserted into the positioning groove 3012.

[0048] Specifically, the elastic member 3016 may be a spring, and both sides of the positioning block 3014 are provided with inclined extrusion surfaces, and the tops of the two extrusion surfaces are close to each other.

[0049] When assembling the inner sleeve 30, the staff first presses the positioning block 3014 to completely receive the positioning block 3014 into the storage cavity 3013. At this time, the elastic member 3016 is in a compressed state, and the elastic member 3214 accumulates elastic potential energy. Then, the smaller-diameter splicing tube 301 is passed through the larger-diameter splicing tube 301. When the storage cavity 3013 and the positioning groove 3012 are aligned, the elastic member 3016 releases the elastic force to push the positioning block 3014 into the positioning groove 3012.

[0050] When it is necessary to disassemble two adjacent splicing tubes 301, the staff only needs to pull the two splicing tubes 301 hard. At this time, the splicing tubes 301 will squeeze the extrusion surface of the positioning block 3014, so that the positioning block 3014 is completely received in the storage cavity 3013. Therefore, in the process of pulling the splicing tube 301, the positioning block 3014 will be squeezed into the positioning groove 3012, so that the positioning block 3014 will not interfere with the two adjacent splicing tubes 301 when they are separated.

[0051] The relative positions of two adjacent splicing tubes 301 are positioned by setting the positioning block 3014 and the positioning groove 3012 so that the inclined surfaces 3011 of the splicing tubes 301 are in the same plane, thereby making the inner sleeve 30 completely fit with the inner wall of the water inlet pipe 10, thereby improving the sealing effect of the seal.

[0052] To ensure that two adjacent splicing tubes 301 are completely fitted together, if the gap between the two adjacent splicing tubes 301 is large, a sealing strip may be inserted between the two adjacent splicing tubes 301 .

[0053] In some embodiments, see Figure 6 The inner wall of the splicing tube 301 is provided with a positioning groove 3012 , and the outer wall of the splicing tube 301 is provided with a positioning portion that is plugged and matched with the positioning groove 3012 .

[0054] When the positioning groove 3012 is aligned with the positioning portion, the positioning portion is inserted into the positioning groove 3012 .

[0055] In some embodiments, see Figure 6 The outer wall of the splicing tube 301 is provided with a storage cavity 3013, and a positioning block 3014 is slidably adapted to form a positioning portion in the storage cavity 3013. A power piece 3015 is provided in the storage cavity 3013. When the positioning groove 3012 is aligned with the positioning portion, the power piece 3015 is started to push the positioning block 3014 into the positioning groove 3012.

[0056] Specifically, the power component 3015 may be an electric cylinder.

[0057] When assembling the inner sleeve 30 , the smaller-diameter splicing tube 301 is passed through the larger-diameter splicing tube 301 . When the receiving cavity 3013 and the positioning groove 3012 are aligned, the power piece 3015 is started, and the piston rod of the power piece 3015 extends out and pushes the positioning block 3014 into the positioning groove 3012 .

[0058] When two adjacent splicing tubes 301 need to be disassembled, the power member 3015 is started again, the piston rod of the power member 3015 is retracted and drives the positioning block 3014 to be received in the storage chamber 3013, and then the staff gently pulls the two splicing tubes 301 to separate them.

[0059] The relative positions of two adjacent splicing tubes 301 are positioned by setting the positioning block 3014 and the positioning groove 3012 so that the inclined surfaces 3011 of the splicing tubes 301 are in the same plane, thereby making the inner sleeve 30 completely fit with the inner wall of the water inlet pipe 10, thereby improving the sealing effect of the seal.

[0060] To ensure that two adjacent splicing tubes 301 are completely fitted together, if the gap between the two adjacent splicing tubes 301 is large, a sealing strip may be inserted between the two adjacent splicing tubes 301 .

[0061] In some embodiments, see Figure 2 and Figure 3 The inner wall of the innermost splicing tube 301 is connected to a locking tube 60 by rotating around its own central axis, one end of the locking tube 60 is aligned with the innermost end of the innermost splicing tube 301, and the other end of the locking tube 60 extends to the outside of the outermost end of the innermost splicing tube 301, and a locking assembly 70 is provided between the innermost splicing tube 301 and the locking tube 60.

[0062] It should be noted that the direction in which the diameter of the water inlet pipe 10 gradually increases is the outside, and the direction in which the diameter of the water inlet pipe 10 gradually decreases is the inside.

[0063] Specifically, a plurality of locking assemblies 70 are arranged around the central axis of the locking tube 60, and the locking assemblies 70 include a locking plate 701 and two locking bolts 702, wherein one locking bolt 702 is connected between the locking plate 701 and the locking tube 60, and the other locking bolt 702 is connected between the locking plate 701 and the innermost splicing tube 301.

[0064] After fixing the seal in the water inlet pipe 10 , the staff inserts the interface of the water pump connector 80 into the inner sleeve 30 by rotating the locking tube 60 and moving the testing device until the interface end of the water pump connector 80 is pressed against the inner wall of the water inlet pipe 10 .

[0065] After the interface end of the water pump connector 80 is pressed against the inner wall of the water inlet pipe 10, the staff screws the locking bolts 702 into the corresponding locking holes respectively, so that the locking plate 701 prevents relative rotation between the locking tube 60 and the inner sleeve 30, thereby fixing the locking tube 60 and the inner sleeve 30.

[0066] In some embodiments, the innermost end surface of the locking tube 60 is covered with a sealing gasket.

[0067] Specifically, the sealing gasket can be fixed on the locking tube 60 by gluing, and the sealing gasket is also pasted on the inclined surface 3011 of the innermost splicing tube 301.

[0068] When the seal is pressed against the inner wall of the water inlet pipe 10, the seal will be squeezed, and the seal will be deformed due to the squeezing, which reduces the possibility of water leakage at the connection between the water inlet pipe 10 and the water pump connector 80 and enhances the sealing effect of the seal.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A water pump coupling test device, comprising a body having a water inlet pipe, characterized in that: The diameter of the outlet end of the water inlet pipe gradually increases outwards; The water pump connector testing device also includes a sealing member, which includes an outer sleeve and an inner sleeve fixed in the outer sleeve, the outer wall of the outer sleeve fits with the inner wall of the water outlet end of the water inlet pipe and the two are detachably connected, the inner sleeve has a plurality of splicing tubes that are sleeved together, two adjacent splicing tubes are detachably connected, one end of the splicing tube has an inclined surface that fits with the inner wall of the water inlet pipe, the outer wall of the splicing tube located on the outermost side fits with the inner wall of the outer sleeve, and the inner wall of the splicing tube located on the innermost side fits with the outer wall of the water pump connector interface and the two are detachably connected.

2. The water pump coupling test device according to claim 1, characterized in that: It also includes a fastening system, which includes a retaining ring, which is detachably connected and fixed to the end of the water outlet of the water inlet pipe, and is used to abut against the end face of the outer sleeve.

3. The water pump coupling test device according to claim 2, characterized in that: The retaining ring is provided with an annular groove on the side wall facing the outer sleeve, and a driving cavity connected to the annular groove is provided in the retaining ring. The fastening system also includes a limiting ring slidably adapted in the annular groove and a driving mechanism provided in the driving cavity, and the driving mechanism is used to drive the limiting ring to axially squeeze the outer sleeve.

4. The water pump coupling test device according to claim 3, characterized in that: An auxiliary ring fixedly connected to the limiting ring is provided in the inner ring of the retaining ring, the inner diameter of the auxiliary ring is greater than or equal to the maximum inner diameter of the outer sleeve, the auxiliary ring is radially penetrated by an auxiliary rod, the auxiliary rod is threadedly connected to the auxiliary ring, and one end of the auxiliary rod located in the inner ring of the auxiliary ring is fixed with an auxiliary block for extruding the inner sleeve.

5. The water pump coupling testing device according to claim 3, characterized in that: The driving mechanism includes a plurality of limit rods arranged in the driving cavity, limit sleeves corresponding to the limit rods one by one, driven gears corresponding to the limit sleeves one by one, and a driving gear meshing with the plurality of driven gears, one end of the limit rod extends into the annular groove and is fixedly connected to the limit ring, the limit sleeve is threadedly connected to the limit rod, the limit sleeve is rotatably connected to the retaining ring around its own center axis, the driven gear is fixed to the outer periphery of the limit sleeve, a driving hand wheel is provided on the side of the retaining ring away from the outer sleeve, one side of the driving hand wheel extends into the driving cavity and is fixedly connected to the driving gear, the driving hand wheel is coaxial with the driving gear, and the driving hand wheel is rotatably connected to the retaining ring around its own center axis.

6. The water pump coupling testing device according to claim 5, characterized in that: The retaining ring is provided with a through groove for the limiting rod to extend from the driving cavity into the annular groove, the inner wall of the through groove is fixed with a guide block, the outer wall of the limiting rod is provided with a guide groove slidably adapted to the guide block, and the guide groove extends along the axial direction of the limiting rod.

7. The water pump coupling testing device according to claim 1, characterized in that: The inner wall of the splicing pipe is provided with a positioning groove, and the outer wall of the splicing pipe is provided with a positioning portion that is plugged and matched with the positioning groove; Wherein, after the positioning groove is aligned with the positioning portion, the positioning portion is inserted into the positioning groove.

8. The water pump coupling testing device according to claim 7, characterized in that: The outer wall of the splicing tube is provided with a receiving cavity, and a positioning block forming the positioning portion is slidably adapted in the receiving cavity; An elastic member is provided in the storage cavity, the elastic member is fixed between the positioning block and the inner wall of the storage cavity, and the elastic member has a pre-tightening force that enables the positioning block to be inserted into the positioning groove; or A power piece is arranged in the receiving cavity, and when the positioning groove is aligned with the positioning portion, the power piece is activated to push the positioning block into the positioning groove.

9. The water pump coupling testing device according to claim 1, characterized in that: The inner wall of the innermost splicing tube is connected to a locking tube by rotating around its own central axis, one end of the locking tube is aligned with the innermost end of the innermost splicing tube, and the other end of the locking tube extends to the outside of the outermost end of the innermost splicing tube, and a locking assembly is provided between the innermost splicing tube and the locking tube.

10. The water pump coupling testing device according to claim 9, characterized in that: The locking assembly is arranged in plurality around the central axis of the locking tube, and the locking assembly includes a locking plate and two locking bolts, one of the locking bolts is connected between the locking plate and the locking tube, and the other locking bolt is connected between the locking plate and the innermost splicing tube.

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