Injection pump for liquid forming machine

Abstract

The utility model relates to the field of liquid variable volume technologies, and particularly discloses a material injection pump for a liquid forming machine, the material injection pump comprises a base, a pump assembly and a driving part for driving the pump assembly, two mounting seats are fixed on the base and are respectively positioned at two ends of the pump assembly; the pump assembly comprises a pump body, a front end cover, a rear end cover, a piston assembly and a piston rod, the front end cover and the rear end cover are installed at the two ends of the pump body respectively, a discharging port is formed in the front end cover, a feeding port is formed in the rear end cover, the piston assembly is located in the pump body, and the piston rod penetrates through the rear end cover and is connected with the piston assembly; the pump assembly is provided with a locking piece used for fixing the pump assembly between the two installation bases in an abutting mode. According to the pump assembly, the locking piece is arranged on the pump assembly, when the pump assembly needs to be cleaned, the pump assembly can be detached from the position between the two mounting bases only by operating the locking piece, and the pump assembly is convenient to clean.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of liquid volume change technology, and in particular to an injection pump for a liquid molding machine. BACKGROUND

[0002] The liquid molding machine is a device for stirring the powder material into paste material and then extruding, and then dehydrating and molding, which is commonly used in the production of powder compacts in the cosmetic industry.

[0003] In the related art, several injection pumps are used in the liquid molding machine to pump the stirred paste material to the next station for the next operation. When another product needs to be produced after the production of a product is completed, the injection pump needs to be cleaned. The conventional injection pump can only be continuously injected with clean water to flush out the internal residues, which is inconvenient for cleaning.

[0004] Therefore, the present application provides an injection pump which is convenient to clean. SUMMARY

[0005] In order to facilitate the cleaning of the injection pump, the present application provides an injection pump for a liquid molding machine.

[0006] The injection pump for a liquid molding machine provided by the present application adopts the following technical solution:

[0007] An injection pump for a liquid molding machine comprises a base, a pump assembly, and a driving member for driving the pump assembly, the base is fixed with a mounting seat, the mounting seat is provided with two and is located at both ends of the pump assembly; the pump assembly comprises a pump body, a front end cover, a rear end cover, a piston assembly, and a piston rod, the front end cover and the rear end cover are installed at both ends of the pump body, the front end cover is provided with a discharge port, the rear end cover is provided with a feed port, the piston assembly is located in the pump body, and the piston rod penetrates through the rear end cover and is connected with the piston assembly; the pump assembly is provided with a locking member for tightly fixing the pump assembly between the two mounting seats.

[0008] By adopting the above technical solution, the locking member is arranged on the pump assembly, in use, the pump assembly is tightly fixed between the two mounting seats by the locking member, when the pump assembly needs to be disassembled and cleaned, the pump assembly can be quickly disassembled from the two mounting seats by operating the locking member, which facilitates the cleaning operation of the pump assembly.

[0009] Optionally, the locking member comprises a fixed block and a locking block, installation grooves are formed at upper ends of the two mounting seats, the front end cover is inserted into the corresponding installation groove, an abutting ring protrusion is arranged at one end of the front end cover close to the pump body, and the abutting ring protrusion abuts against the corresponding mounting seat; the fixed block and the locking block are located at one end close to the rear end cover, the piston rod penetrates through the fixed block and the locking block and is in sliding fit with each other; the fixed block and the locking block are in threaded connection, the locking block is located at one side of the fixed block close to the rear end cover, when the locking block is rotated away from the fixed block, the locking block abuts against the rear end cover, and the fixed block abuts against the mounting seat on the same side.

[0010] By adopting the technical scheme, the fixed block and the locking block are arranged, the front end cover is inserted into the installation groove of the corresponding mounting seat when the pump assembly needs to be fixed, then the fixed block is abutted against the mounting seat on the other side, and the pump assembly can be tightly fixed between the two mounting seats by rotating the locking block to lengthen the distance between the fixed block and the locking block; when the pump assembly is disassembled, the locking block is rotated to be close to the fixed block, so that the pump assembly can be loosened from the two mounting seats, and the pump body can be taken out.

[0011] Optionally, insertion grooves are formed in the two groove walls of the fixed block corresponding to the installation grooves, and the fixed block is slidably inserted into the corresponding installation groove.

[0012] By adopting the technical scheme, the installation stability of the fixed block on the mounting seat can be effectively improved.

[0013] Optionally, a connecting block for connecting the piston rod is arranged at the output end of the driving member, a T-shaped groove is vertically formed in one end of the connecting block away from the driving member, and an insertion end of the piston rod is arranged in sliding fit with the T-shaped groove.

[0014] By adopting the technical scheme, the connecting block is arranged at the output end of the driving member, and the T-shaped groove is formed in the connecting block, the insertion end of the piston rod is inserted into the T-shaped groove in normal operation, the piston rod can move along with the driving member when the driving member works, so that power is transmitted to the pump assembly, and the insertion end of the piston rod can be pulled out of the T-shaped groove when the pump assembly needs to be disassembled.

[0015] Optionally, insertion blocks are fixed to one side of the front end cover and the rear end cover close to the pump body, and the insertion blocks are slidably inserted into the two ends of the pump body.

[0016] By adopting the technical scheme, the front end cover and the rear end cover are inserted into the two ends of the pump body, the front end cover and the rear end cover can be pulled out of the two ends of the pump body when the pump assembly needs to be cleaned, the interior of the pump body can be cleaned, and the pump assembly can be conveniently cleaned.

[0017] Optionally, a sealing ring is mounted on the side wall of the plug-in block.

[0018] By adopting the technical scheme, the sealing performance between the front end cover, the rear end cover and the pump body can be effectively improved.

[0019] Optionally, the piston assembly comprises a piston, a push block and a push plate, the piston is coaxially inserted into the pump body, the piston rod is coaxially penetrated through the piston and is in sliding cooperation with the piston, and a channel is formed in the piston and communicates with the two end chambers; the push plate is detachably fixed on the piston rod, and the push plate is located on the side of the piston close to the rear end cover; the push block is detachably fixed on the end of the piston rod, and the push block is located on the side of the piston close to the front end cover, and the distance between the push block and the push plate is greater than the length of the piston; when the push plate abuts against the piston, the push plate seals the channel.

[0020] Optionally, a sealing ring is mounted on the side wall of the piston.

[0021] Optionally, the fixed block and the locking block are in sliding cooperation, a sliding rod is coaxially fixed on the end of the locking block close to the fixed block, the sliding rod penetrates through the fixed block and is in sliding cooperation with the fixed block; and an elastic member is sleeved on the sliding rod, and the two ends of the elastic member abut against the fixed block and the locking block, respectively.

[0022] By adopting the technical scheme, when in use, the locking block can be pushed to one side of the pump assembly by the elastic member, so that the pump assembly is tightly fixed between the two mounting seats; when installation or disassembly is needed, the pump assembly can be taken out from between the two mounting seats by only compressing the elastic member to shorten the distance between the fixed block and the locking block.

[0023] Optionally, a limiting groove is formed in the mounting seat on which the fixed block is mounted, and the limiting groove is close to the rear end cover, and the elastic member abuts the fixed block in the limiting groove.

[0024] By adopting the technical scheme, when in normal use, the fixed block is abutted in the limiting groove by the elastic member, so that the upward and downward movement of the fixed block can be effectively prevented, and the stability of the whole is improved.

[0025] In summary, the present application has at least one of the following beneficial technical effects:

[0026] 1. By arranging the locking member on the pump assembly, when in use, the pump assembly is tightly fixed between the two mounting seats by the locking member, and when the pump assembly needs to be disassembled and cleaned, the pump assembly can be quickly disassembled from between the two mounting seats by only operating the locking member, so that the cleaning operation of the pump assembly is facilitated;

[0027] 2. By setting the fixed block and the locking block, when the pump assembly needs to be fixed, the front end cover is inserted into the installation groove of the corresponding installation seat, then the fixed block is abutted on the installation seat on the other side, then the locking block is rotated to lengthen the distance between the fixed block, so that the pump assembly can be tightly fixed between the two installation seats, when disassembling, the locking block is rotated to make the locking block close to the fixed block, so that the pump assembly can be loosened from the two installation seats, and then the pump body can be taken out;

[0028] 3. By setting the connecting block on the output end of the driving piece, and setting the T-shaped groove on the connecting block, in normal work, the plug-in end of the piston rod is inserted into the T-shaped groove, in the work of the driving piece, the piston rod can move with the driving piece, so that power is transmitted to the pump assembly, when the pump assembly needs to be disassembled, only the plug-in end of the piston rod is pulled out of the T-shaped groove. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is the overall structure schematic view of embodiment 1 of the application;

[0030] Figure 2 is the overall structure schematic view of embodiment 1 of the application; Figure 1 is the enlarged view of area A in

[0031] Figure 3 is the overall sectional view of embodiment 1 of the application;

[0032] Figure 4 is the enlarged view of area B in Figure 3

[0033] is the overall sectional view of embodiment 1 of the application; Figure 5 is the schematic view of the different structure of embodiment 2 of the application.

[0034] Fig. 1 is a base; 11 is an installation seat; 111 is an installation groove; 112 is a limiting groove; 2 is a pump assembly; 21 is a pump body; 22 is a front end cover; 221 is a discharge port; 222 is a plug-in block; 223 is an abutting ring convex; 23 is a rear end cover; 231 is a feeding port; 24 is a piston assembly; 241 is a piston; 2411 is a channel; 242 is a push block; 243 is a push plate; 25 is a piston rod; 251 is a plug-in end; 26 is a sealing ring; 3 is a driving piece; 31 is a connecting block; 311 is a T-shaped groove; 4 is a locking piece; 41 is a fixed block; 411 is a plug-in groove; 42 is a locking block; 421 is a sliding rod; 43 is an elastic piece. DETAILED DESCRIPTION

[0035] Embodiment 1:

[0036] Embodiment 1 of the application discloses a feeding pump for a liquid forming machine, referring to Figure 1 and Figure 2, including base 1, mounting seat 11, pump assembly 2 and driving part 3, mounting seat 11 is provided with two, respectively fixed on the base 1 on both ends of the pump assembly 2; locking part 4 is arranged on the pump assembly 2, and the pump assembly 2 is fixed between the two mounting seats 11 through the locking part 4; the driving part 3 is fixed at one end of the base 1, and the driving part 3 is arranged as a cylinder, and the driving part 3 drives the pump assembly 2 to operate.

[0037] Referring to Figure 2 and Figure 3 , the pump assembly 2 comprises a pump body 21, a front end cover 22, a rear end cover 23, a piston assembly 24 and a piston rod 25, the front end cover 22 and the rear end cover 23 are respectively arranged at both ends of the pump body 21, the front end cover 22 is provided with a discharge port 221 communicating with the inside of the pump body 21, the rear end cover 23 is provided with a feeding port 231 communicating with the inside of the pump body 21, the piston assembly 24 is located in the pump body 21, and the piston rod 25 penetrates through the rear end cover 23 and is connected with the piston assembly 24. The front end cover 22 and the rear end cover 23 are integrally formed with an insertion block 222 on the side close to the pump body 21, and the insertion block 222 is respectively slidably inserted into both ends of the pump body 21; a sealing ring 26 is arranged on the side wall of the insertion block 222, so that the sealing property between the insertion block 222 and the pump body 21 is improved.

[0038] Referring to Figure 1 and Figure 2 , the upper end of the two mounting seats 11 is provided with a U-shaped mounting groove 111, and the end of the front end cover 22 is inserted into the mounting groove 111, and a butt ring protrusion 223 is coaxially arranged on the end of the front end cover 22 close to the pump body 21, and the butt ring protrusion 223 butts against the mounting seat 11. The locking part 4 comprises a fixed block 41 and a locking block 42, and the fixed block 41 and the locking block 42 are threadedly connected, and rotating the locking block 42 can make the fixed block 41 and the locking block 42 approach or move away from each other. The locking part 4 is located on the side of the pump assembly 2 close to the rear end cover 23; the fixed block 41 is inserted into the mounting groove 111, and the insertion slot 411 is arranged on the two side walls of the mounting groove 111; the locking block 42 is located on the side of the fixed block 41 close to the rear end cover 23, and the piston rod 25 penetrates through the locking block 42 and the fixed block 41 and slidably matches with each other.

[0039] When the pump assembly 2 is installed, the locking block 42 is rotated, the distance between the locking block 42 and the fixed block 41 is increased, the locking block 42 is tightly butted against the rear end cover 23, so that the pump assembly 2 is tightly butted between the two mounting seats 11, and the installation is realized; when the pump assembly 2 needs to be taken out, the locking block 42 is rotated and moved towards the side of the fixed block 41, so that the pump assembly 2 can be loosened, and the pump assembly 2 is conveniently taken out.

[0040] A connecting block 31 is fixed at the output end of the driving member 3, and a T-shaped slot 311 is vertically formed at the end of the connecting block 31 away from the driving member 3; the end of the piston rod 25 is provided with a plug-in end 251 which is slidably inserted into the T-shaped slot 311. When the pump assembly 2 needs to be disassembled, the plug-in end 251 of the piston rod 25 is only pulled out of the T-shaped slot 311.

[0041] With reference to Figure 3 and Figure 4 The piston assembly 24 comprises a piston 241, a shifting block 242 and a push plate 243. The piston 241 is coaxially inserted into the pump body 21, and the piston rod 25 is coaxially inserted into the piston 241 and slidably connected with the piston 241. A sealing ring 26 is mounted on the side wall of the piston 241. The piston 241 is provided with a channel 2411 which communicates with the two end chambers. The push plate 243 is threadedly connected to the piston rod 25 and located at the side of the piston 241 close to the rear end cover 23. The shifting block 242 is threadedly connected to the end of the piston rod 25 and located at the side of the piston 241 close to the first end cover. The distance between the shifting block 242 and the push plate 243 is greater than the length of the piston 241.

[0042] When the driving member 3 drives the piston rod 25 to move towards the side of the front end cover 22, the push plate 243 abuts against the piston 241 and seals the channel 2411, so that a vacuum is formed in the pump body 21, and the material is sucked from the inlet 231. When the piston 241 moves to the head, the driving member 3 drives the piston rod 25 to return, the push plate 243 moves away from the piston 241, and the shifting block 242 abuts against the piston 241 to drive the piston 241 to move towards the side of the rear end cover 23. The piston 241 will squeeze the material in the pump body 21, so that the material enters the other end of the pump body 21 through the channel 2411. When the piston 241 moves to the rear end cover 23, the driving member 3 drives the piston rod 25 to move towards the front end cover 22. At this time, the piston 241 will squeeze the material in the pump body 21 to be discharged from the outlet 221, and the material is sucked from the inlet 231.

[0043] The implementation principle of the injection pump for the liquid molding machine disclosed in Embodiment 1 is that: by arranging the locking member 4 and the T-shaped slot 311 formed on the connecting block 31, when the pump assembly 2 needs to be disassembled and cleaned, the pump assembly 2 can be taken out only by rotating the locking block 42. Then, the front end cover 22 and the rear end cover 23 are pulled out from the two ends of the pump body 21, and finally the piston assembly 24 can be taken out, so that the inside of the pump assembly 2 can be cleaned, and the sealing member and other easily damaged parts can be conveniently replaced and maintained.

[0044] Embodiment 2:

[0045] The difference between the embodiment 2 and the embodiment 1 of the present application is that the sliding rod 421 is coaxially integrally formed on the side of the locking block 42 close to the fixing block 41, the sliding rod 421 penetrates through the fixing block 41 and is in sliding fit with the fixing block 41; the elastic member 43 is coaxially sleeved on the sliding rod 421, the elastic member 43 is set as a compression spring, and the two ends of the elastic member 43 abut against the locking block 42 and the fixing block 41 respectively; the limiting groove 112 is formed on the mounting seat 11 close to the rear end cover 23, the fixing block 41 is inserted into the limiting groove 112 under the action of the elastic member, the limiting groove 112 can limit the up-down movement of the fixing block 41, and the stability of the overall installation is improved.

[0046] In normal working, the elastic member 43 pushes the fixing block 41 and the locking block 42 to the two sides, the locking block 42 moves to the side of the rear end cover 23 and abuts against the pump assembly 2 between the two mounting seats 11, and the fixing of the pump assembly 2 is realized. When the pump assembly 2 needs to be disassembled, the locking block 42 is only pushed to the side of the fixing block 41, the elastic member 43 is compressed, the locking block 42 is loosened from the pump assembly 2, and the pump assembly 2 can be disassembled, which is convenient for use.

[0047] The above are the preferred embodiments of the present application, and are not used to limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A shot pump for a liquid molding machine, characterized by, The utility model relates to a pump assembly locking device, including: Base (1), pump assembly (2) and drive piece (3) for driving the pump assembly (2), the base (1) is fixed with mounting seat (11), the mounting seat (11) is provided with two and respectively located the both ends of pump assembly (2), the pump assembly (2) includes pump body (21), front end cover (22), rear end cover (23), piston assembly (24) and piston rod (25), the front end cover (22) and rear end cover (23) are installed at the both ends of pump body (21) respectively, the front end cover (22) is opened with discharge port (221), the rear end cover (23) is opened with feed inlet (231), the piston assembly (24) is located in pump body (21), the piston rod (25) penetrates through rear end cover (23) and is connected with piston assembly (24), the pump assembly (2) is provided with locking piece (4) for the pump assembly (2) is fixedly arranged between two mounting seat (11).

2. A shot pump for a liquid molding machine according to claim 1, wherein The locking piece (4) includes fixed block (41) and locking block (42), the upper end of two mounting seat (11) is opened with mounting groove (111), the front end cover (22) is inserted in corresponding mounting groove (111), the front end cover (22) is provided with abutment ring convex (223) on one end close to pump body (21), the abutment ring convex (223) is abutted on corresponding mounting seat (11), the fixed block (41) and locking block (42) are located on one end close to rear end cover (23), the piston rod (25) penetrates through fixed block (41) and locking block (42) simultaneously and mutually slide fits, the fixed block (41) and locking block (42) are threadedly connected, the locking block (42) is located on the side of fixed block (41) close to rear end cover (23), when rotating locking block (42) away from fixed block (41), locking block (42) is abutted on rear end cover (23), and fixed block (41) is abutted on the mounting seat (11) on the same side simultaneously.

3. A shot pump for a liquid molding machine according to claim 2, wherein The fixed block (41) is opened with the slot (411) of the both sides groove wall of corresponding mounting groove (111), and the fixed block (41) is slidably inserted into the corresponding side mounting groove (111).

4. A shot pump for a liquid molding machine according to claim 1, wherein The output end of drive piece (3) is installed with the connecting block (31) for connecting piston rod (25), and the end of connecting block (31) away from drive piece (3) is vertically penetrated with T-shaped slot (311); The end of piston rod (25) is provided with the plug-in end (251) of the slide insertion fit of T-shaped slot (311).

5. A shot pump for a liquid molding machine according to claim 1 wherein, The front end cover (22) and rear end cover (23) are fixed with plug-in block (222) on the side close to pump body (21), and plug-in block (222) is slidably inserted into the both ends of pump body (21) respectively.

6. A shot pump for a liquid molding machine according to claim 5 wherein, The sidewall of plug-in block (222) is installed with sealing ring (26).

7. A shot pump for a liquid molding machine as defined in claim 1, wherein The piston assembly (24) comprises a piston (241), a push block (242) and a push plate (243), the piston (241) is coaxially inserted into the pump body (21), the piston rod (25) is coaxially penetrated through the piston (241) and is in sliding fit with the piston (241), and the piston (241) is provided with a channel (2411) communicating with two end chambers; the push plate (243) is detachably fixed on the piston rod (25), and the push plate (243) is located on the side of the piston (241) close to the rear end cover (23); the push block (242) is detachably fixed on the end of the piston rod (25), the push block (242) is located on the side of the piston (241) close to the front end cover (22), and the distance between the push block (242) and the push plate (243) is greater than the length of the piston (241); when the push plate (243) abuts against the piston (241), the push plate (243) seals the channel (2411).

8. A shot pump for a liquid molding machine according to claim 7, wherein The side wall of the piston (241) is provided with a sealing ring (26).

9. A shot pump for a liquid molding machine according to claim 2 wherein, The fixing block (41) and the locking block (42) are in sliding fit, one end of the locking block (42) close to the fixing block (41) is coaxially fixed with a sliding rod (421), the sliding rod (421) penetrates through the fixing block (41) and is in sliding fit with the fixing block (41); the sliding rod (421) is sleeved with an elastic element (43), and the two ends of the elastic element (43) abut against the fixing block (41) and the locking block (42) respectively.

10. A shot pump for a liquid molding machine according to claim 9, wherein The mounting seat (11) provided with the fixing block (41) is provided with a limiting groove (112) limiting the up-down movement of the fixing block (41) at one end close to the rear end cover (23), and the elastic element (43) abuts the fixing block (41) in the limiting groove (112).

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